2026-10-15T15:16:38+03:30 http://ijrm.ir/browse.php?mag_id=217&slc_lang=en&sid=1

217-3697 2026-10-15 10.1002

International Journal of Reproductive BioMedicine IJRM 2476-4108 2476-3772 10.29252/ijrm 2025 23 5 Ahrari M K-1 Infectious and immunological factors Ahrari M. Department of Urology, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Email: Dr.mohsenahrari@gmail.com Recurrent pregnancy loss, defined as the occurrence of ≥ 2 consecutive miscarriages, can be influenced by a variety of factors, including genetic, anatomical, hormonal, and immunologic factors. While much research has focused on maternal factors, male factor contributions to recurrent abortion are increasingly recognized. Here’s an overview of the role of infection and immunologic factors in male factor recurrent abortion. Infection: semen quality: infections in the male reproductive tract (e.g., sexually transmitted infections like Chlamydia or Ureaplasma) can affect semen quality by altering sperm motility, morphology, and overall viability. Poor sperm quality may contribute to fertilization issues and subsequent pregnancy loss. Systemic infections: systemic infections in males can lead to inflammatory responses that may affect sperm production and function. Elevated levels of inflammatory cytokines can impact reproductive outcomes. Microbiome influence: the male urogenital microbiome may play a role in fertility. Dysbiosis or an imbalance in the microbiome could potentially influence sperm health and contribute to reproductive challenges. Immunologic factors: sperm antigens: the immune system may recognize paternal sperm antigens as foreign, leading to an immune response that could affect implantation or early pregnancy maintenance. This is particularly relevant if there is a history of autoimmune disorders or if the female partner has an autoimmune condition. Antisperm antibodies: the presence of antisperm antibodies in either partner can impair sperm function and fertilization potential. These antibodies can be produced due to previous infections or trauma. Th1/Th2 cytokine balance: A skewed balance between Th1 (pro-inflammatory) and Th2 (anti-inflammatory) cytokines can impact pregnancy outcomes. An inappropriate immune response from either partner may lead to implantation failure or miscarriage. Other considerations: environmental factors: exposure to environmental toxins (e.g., heavy metals, pesticides) can also influence both infection rates and immunologic responses in males, potentially impacting fertility. Lifestyle factors: smoking, alcohol consumption, obesity, and stress are known to affect both male fertility parameters and overall health status. While traditionally viewed as primarily a female issue, male factors-including infections and immunologic responses- can significantly contribute to recurrent pregnancy loss. A comprehensive evaluation involving both partners is essential for understanding the underlying causes of RPL and developing effective treatment strategies. Addressing these factors through lifestyle modifications, medical treatments for infections, or immunotherapy may improve reproductive outcomes for couples experiencing recurrent miscarriages. K-2 Metabolites and in vitro gametogenesis Akyash F1, Tahajjodi SS1, Hajihosseini S2, Farashahi Yazd E1, Hajizadeh-Tafti F1, Golzadeh J1, Aflatoonian R3, Rezaei-Tavirani M4, Aflatoonian B1. Stem Cell Biology Research Center, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Medical Nanotechnology and Tissue Engineering Research Center, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Science, Yazd, Iran. Department of Endocrinology and Female Infertility, Reproductive Biomedicine Research Centre, Royan Institute for Reproductive Biomedicine, Tehran, Iran. Faculty of Paramedical Sciences, Proteomics Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran. Email: tavirany@yahoo.com; b.aflatoonian@ssu.ac.ir Several studies have shown that conditioned medium (CM) from germ cells niche such as testicular cells (TC), cumulus cells (CC), and granulosa cells supports in vitro germ cells development from various sources of stem cells in different species. Recently, we have published 2 articles showing CM from TC (Akyash et al. 2024) and CC (Tahajjodi et al. 2025) facilitate germ cells differentiation from human embryonic stem cells (hESCs). In these studies, Yazd2 (46, XY) and Yazd4 (46, XX) hESC lines were used for in vitro gametogenesis. Human ESCs were induced for differentiation using embryoid body (EB) formation method in 4 groups; 1) EB medium as spontaneously differentiation condition (SD-EB), 2) 60% EB medium+40% DMEM (SD-DM), 3) CMTC/CC based on DMEM medium (CM-DM), 4) CMTC/CC based on EB medium (CM-EB). Our data confirmed previous studies in different species and other stem cells sources, that TCCM and CCCM support in vitro development of germ cells from stem cells. Moreover, our data indicated that the medium also has an impact on the process of differentiation as the CM based on the EB medium was more supportive than DMEM. It has been reported that metabolic co-dependence of the oocyte and CCs has an essential role in determining oocyte developmental competence which caused initiation further studies in our group to define the metabolic factors within CM from CCs and TCs. K-3 PCO and women's health Aleyasin A. Department of Infertility, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran. Email: ivfshariati69@gmail.com PCOS is a complex endocrine disorder with a prevalence of 6-15% in reproductive ages, characterized by oligomenorrhea, infertility, hyperandrogenism, and neurological disorders. Its impact on other body systems contributes to increased morbidity and even mortality in these patients. From a health perspective, these patients are divided into three age groups: adolescence, reproductive age, and premenopausal. During adolescence, girls with PCOS experience symptoms such as obesity, hirsutism, and menstrual disorders, which significantly impair their quality of life. These symptoms can lead to the development of depression and anxiety in patients. Therefore, screening is recommended, and if necessary, referral to a psychiatrist is advised. During reproductive age, infertility issues and the numerous treatments for infertility become a major concern. If pregnancy occurs, the complications of PCOS during pregnancy put these patients at risk of diabetes and hypertension. Additionally, the effects of hyperandrogenism can manifest in the newborn, leading to health problems in this age group as well. In premenopausal women with PCOS, there is an increased risk of type 2 diabetes, hypertension, cardiovascular disorders, and endometrial cancer. These factors jeopardize the individual's health. Ultimately, it is recommended that all PCOS patients, regardless of age or BMI, should be regularly screened for hypertension, diabetes, psychiatric disorders, obstructive sleep apnea, and endometrial hyperplasia. Preventive strategies should be implemented, and treatment should begin promptly if symptoms arise. K-4 A case report study for ovarian tissue transplantation by verification method Anbari F1, 2, Khalili MA1, 2, Vatanparast M3, Haghdani S4, Eftekhar M1. Research and Clinical Center for Infertility, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Department of Reproductive Biology, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Molecular Medicine Research Center, Rafsanjan University of Medical Sciences, Rafsanjan, Iran. Andrology Research Center, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Email: anbari.fatemeh@gmail.com The purpose of ovarian tissue cryopreservation is to preserve primary and primordial follicles, which constitute the majority of ovarian follicles. This technique is primarily utilized in females, both prepubertal and adult, who are undergoing chemotherapy or radiation therapy and are with risk of ovarian tissue damage. It is also employed in cases where ovulation induction and oocyte retrieval are not feasible, offering a viable alternative for fertility preservation. Vitrification has been proven effective for freezing ovarian tissue with minimal alteration in cellular morphology. This method involves the use of high concentrations of cryoprotectants, such as dimethyl sulfoxide and ethylene glycol, along with an extremely rapid cooling rate (-1500°C/min), reducing the formation of ice crystals and cold-induced damage. This case report, conducted at the Yazd Reproductive Institute, Yazd, Iran involves the vitrification of ovarian tissue from a 28-yr-old woman diagnosed with acute lymphoblastic leukemia. In this procedure, the ovarian medulla was mechanically separated using a scalpel in a sterile petri dish, followed by the cutting of the ovarian cortex into thin slices. Tissue viability was assessed using chick embryo chorioallantoic membrane assays, while follicular count was determined through histological evaluation. The thawed viable ovarian tissue was then transplanted onto the residual medulla and a peritoneal pocket. The patient exhibited an appropriate hormonal profile and the restoration of her menstrual cycle, suggesting a successful transplant. However, this case report showed acceptable results from the aforementioned techniques. Further research is required to achieve consistent clinical success in this field. K-5 Management of PCOS in reproductive age Arefi S. Avicenna Research Institute, Avicenna Infertility Center, Tehran, Iran. Email: soheilaarefi@yahoo.com Polycystic ovary syndrome is a prevalent endocrine disorder characterized by hyperandrogenism and menstrual dysfunction, significantly impacting women's reproductive and metabolic health. Effective management strategies are crucial to mitigate associated symptoms and long-term complications. This abstract outlines a comprehensive approach to addressing hyperandrogenism and menstrual irregularities in polycystic ovary syndrome, encompassing lifestyle modifications, pharmacological interventions, and ongoing monitoring. Lifestyle adjustments, including dietary changes and increased physical activity, form the cornerstone of management, particularly for insulin resistance and weight management. Pharmacological options include hormonal contraceptives to regulate menstrual cycles and reduce androgen levels, anti-androgens to directly target hyperandrogenism, and insulin-sensitizing agents to improve metabolic profiles. Individualized treatment plans, tailored to patient-specific symptoms and risk factors, are essential. Regular follow-up and monitoring are vital to assess treatment efficacy, manage potential side effects, and optimize long-term outcomes, reducing the risk of cardiovascular disease, type 2 diabetes, and endometrial hyperplasia. K-6 Sexual behavior after infertility diagnosis Bokaie M. Research Center for Nursing and Midwifery Care, Non-Communicable Diseases Research Institute, Department of Midwifery, School of Nursing and Midwifery, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Email: mah_bokaie@yahoo.com; mah_bokaie@ssu.ac.ir Infertility poses a significant challenge to the sexual lives of couples facing this issue. Primary and secondary infertility can be influenced by various factors, which may include female, male, both, or unknown causes. The hope for treatment can impact sexual behavior. The sexual behaviors of couples following an infertility diagnosis include: decreased intimacy and couple relationships, along with increased psychological pressures including: A) fear of failure: the inability to engage in sexual relations as a means of achieving fertility may diminish sexual desire. B) psychological tension: stress and psychological pressure can lower the desire for sexual relations. C) feelings of frustration: the inability to conceive can lead to feelings of frustration and depression. D) decreased self-esteem: some individuals may feel responsible for the situation and experience feelings of inadequacy, particularly if their partner blames them for this condition. E) increased tension: infertility can result in heightened stress and signs of conflict within marital relationships. F) negative reactions: negative behaviors towards each other may escalate, such as refusing to follow a scheduled plan for sexual relations. G) increased anxiety. Stress is due to: a) financial concerns: the costs associated with infertility treatment can generate financial anxiety. b) social pressure: societal expectations regarding parenthood may contribute to the stress. K-7 Implementation of the midwifery models of care in infertility Bostani Khalesi Z. Department of Midwifery, School of Nursing and Midwifery, Guilan University of Medical Sciences, Rasht, Iran. Email: z_bostani@yahoo.com As expected, infertility issues have a strong correlation with psychological distress and emotional stress for both partners. The failure attempts terrify couples, especially women. Management of this condition demands a professional approach to care. This care should be based on equitable and human rights-based care, be high-quality, couple-centered, respectful, and encourage a trusting relationship and partnership. The midwifery models of care address all these aspects. Evidence-based research, on the other hand, revealed that midwives play a crucial role in cases of infertility and are involved in many aspects of infertile couples. These professionals can provide emotional support and evidence-based information, they also offer better communication by respecting the patient’s values. There is a silent agreement, which midwives ought to play a role in assisted reproductive units. According to the European Union, assisted reproductive technology legal regulations, the presence of at least one midwife with at least 2 yr of experience in the field is required among others, for a fertility and reproductive unit to function properly. Midwives can play a bidirectional role in providing health services to infertile couples: constant support to the infertile couple’s health service as well as, participation in medical intervention. Their role between doctors and patients is ideal for promoting better communication between the 2 components and providing a safe mechanism, by using knowledge and empathy, to suggest proper therapeutic options to the infertile couple. The aim of midwives' involvement lies in the continuous support of the infertile woman as well as, counseling the couple throughout this experience. They can operate as part of a broader interdisciplinary team effort along with community health workers, healthcare assistants, medical assistants, and specialist medical practitioners. This interdisciplinary collaboration allows for a seamless integration of services, tailored to the specific needs of infertile couples ensuring that they receive the most comprehensive care possible in diverse contexts and settings. Midwives' success in managing infertile couples requires the implementation of midwifery models of care. The models are mainly oriented toward four dimensions: health, care, relationships, and the midwifery profession. Midwifery models of care take place in partnership with the client or patient, recognize the right to self-determination, and is respectful, personalized, continuous, and non-authoritarian. The implementation of midwife continuity of care models, midwifery teamwork or caseload midwifery, the one-to-one midwifery model, the traditional model of general practionair attached community midwives, the midwifery model of care under the supervision of obstetric, and biomedical model can lead to significantly increased satisfaction with care and experience high-quality care. These models can enable couples to make informed health decisions, contribute to their overall autonomy and indecision-making, support healthy and physiological processes and use interventions only when indicated, thereby reducing the negative outcomes and the financial burden associated with unnecessary medical procedures. K-8 Sperm-carried insulin-like growth factor 2: Towards the discovery of a spark contributing to embryo growth and development Cannarella R1, 2. University of Catania, Catania, Italy. Glickman Urological and Kidney Institute, Cleveland Clinic, Cleveland, OH, USA. Email: rossella.cannarella@unict.it Background: Spermatozoa are known to carry RNAs that play a crucial role in early embryo development, with insulin-like growth factor 2 (IGF2) being a potential key growth regulator. IGF2 is a paternally expressed, imprinted gene involved in cell growth and proliferation. Recent studies suggest that IGF2 is expressed in human spermatozoa, but its role in early embryo development remains under investigation. Objective: To test that if IGF2 gene expression in sperm is necessary for supporting early embryo development or not? Materials and Methods: We measured sperm IGF2 mRNA levels in semen samples used for homologous assisted reproductive techniques (ART) in infertile couples and analyzed the correlation with embryo morphokinetics. Additionally, we studied the transcriptomes of blastocysts derived from mouse parthenotes injected with IGF2 mRNA to identify potential mechanistic pathways. Results: Sperm IGF2 mRNA levels negatively correlated with the time taken to reach the 2-cell stage (t2), as well as with t3, t4, t5, and the time to expanded blastocyst. This correlation held true regardless of maternal age, body mass index, anti-Müllerian hormone levels, or oocyte quality. An IGF2 mRNA index > 4.9 accurately predicted the likelihood of embryos reaching the blastocyst stage on day 5, with a sensitivity of 100% and specificity of 71.6% (area under the ROC curve 0.845; p < 0.001). In the animal model, transcriptome analysis revealed that 65 genes were up-regulated and 36 genes down-regulated in the experimental group compared to controls. These genes are involved in pathways critical for early embryo development, supporting the human findings. Conclusion: This study challenges the traditional view of spermatozoa as merely carriers of paternal DNA. Our findings suggest that sperm IGF2 mRNA plays a vital role in early embryo development. The measurement of IGF2 mRNA levels in pre-ART sperm could serve as a predictive marker for the likelihood of successful blastocyst development in infertile couples undergoing ART. K-9 Final oocyte maturation triggering Dashti S. Research and Clinical Center for Infertility, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Email: Saeideh_dashti@yahoo.com Oocyte maturation triggering is a biological process that promotes the transformation of immature oocytes into fully competent oocyte for fertilization. In natural cycle, this process predominantly induced by a surge in luteinizing hormone that characterized by both nuclear and cytoplasmic maturation. Furthermore, trigger for oocyte maturation is a critical step in assisted reproductive technology, influencing the number and quality of mature retrieved oocytes. Oocyte maturation trigger involving protocols like human chorionic gonadotropin (hCG), gonadotropin releasing hormone (GnRH) agonist, and combinations of both known as dual and double triggers. Traditionally, HCG was used for this purpose however; it may not be optimal for all patients. Some evidence suggests that GnRH-a can lead to better oocyte and embryo quality compared to hCG alone. Combining hCG with GnRH-a has shown to enhance oocyte quality and quantity, particularly for normal and poor responders. Emerging evidences introduced kisspeptin as a novel trigger of oocyte maturation that regulates GnRH release and is therefore a key regulator of the hypothalamo-pituitary-gonadal axis. Kisspeptin has been shown to be requisite for the occurrence of the physiological ovulatory LH surge. The timing of trigger is influenced by several critical factors, including follicle size, ovarian response, duration of stimulation, and hormonal levels. Understanding these elements is essential for maximizing the number of mature oocytes retrieved and ensuring successful fertilization. The ideal size for leading follicles is between 16-22 mm, with a minimum of 14 mm for the remaining cohort. Serum estradiol levels are commonly used for this purpose however it can be unreliable due to variability. Inhibin A is suggested as a more consistent marker for assessing oocyte maturity. Serum inhibin A levels was correlated strongly with the number of follicles ≥ 15 mm and the number of retrieved and mature oocytes, alongside transvaginal ultrasound monitoring. The duration of stimulation should ideally be 10-12 days for normal responders before administering the trigger. Another important factor for optimal oocyte maturation is the necessary lag time between the trigger and oocyte aspiration, which should ideally range from 32-38 hr. Both extremely short and long intervals can lead to unfavorable outcomes in oocyte collection. Machine learning models have shown that optimizing trigger timing can significantly enhance the number of usable blastocysts, indicating the importance of individualized approaches. K-10 Artificial intelligence in infertility: Successes and limitations Dehghan HR. Department of Health Technology Assessment, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Email: hamidreza.dehghan@gmail.com Infertility affects a significant proportion of the global population, posing complex diagnostic and therapeutic challenges. Recent advances in artificial intelligence (AI) have introduced promising tools to enhance assisted reproductive technologies by improving diagnostic accuracy, optimizing treatment protocols, and predicting clinical outcomes such as pregnancy and live birth rates. AI-driven algorithms, including machine learning and deep learning models, have demonstrated success in embryo selection, sperm analysis, ovarian response prediction, and personalized treatment planning, contributing to increased efficiency and standardization in fertility clinics. However, these advancements are tempered by limitations including the need for large, high-quality datasets, biological complexity, ethical concerns related to data privacy and patient autonomy, and the risk of over-reliance on AI potentially diminishing clinical expertise. This paper reviews the current state of AI applications in infertility treatment, highlighting key successes and delineating the challenges and ethical considerations that must be addressed to safely integrate AI into reproductive medicine. Future directions emphasize the development of hybrid human-AI decision frameworks, rigorous clinical validation, and the establishment of ethical and regulatory standards to maximize patient benefit while safeguarding rights and trust. K-11 Design and evaluation of a clinical decision support system predicting success of invitro fertilization based on machine learning approach Dehghan Sh1, Rabiei R1, Choobineh H2, Maghooli K3. Department of Health Information Technology and Management, School of Allied Medical Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran. Department of Laboratory Sciences, School of Allied Medical Sciences, Tehran University of Medical Sciences, Tehran, Iran. Department of Biomedical Engineering Science and Research Branch Islamic Azad University, Tehran, Iran. Email: dehghan.sh@gmail.com Background: In vitro fertilization (IVF), a breakthrough in infertility treatment, has a success rate of 30-40%, slightly higher than healthy couples' rates. However, it also has complications and high costs, posing burdens for infertile couples. The complexity of decision-making in medicine further complicates IVF adoption. To properly predict IVF success, machine learning (ML) can be used to create prediction models based on contributing factors. Objectie: We aimed to design and evaluate a clinical decision support system predicting success of IVF based on ML approach. Materials and Methods: In this applied research, by studying and reviewing literature and consulting with experts in the field of infertility, 27 contributing input variables were identified. The data related to 812 cases of infertile couples referred to Royesh Clinic, Tehran, Iran were extracted from medical records. Feature selection were done using genetic algorithm. The four classes of RPART, Random Forest, Support Vector Machine and Artificial Neural Network were trained based on the data. Then the four classifiers were used to construct an adaboost structure. The prediction models were compared based on the accuracy, sensitivity, specificity and area under the ROC curve. The one outperforms others, was used to design the system. Following the development and implementation of the system prototype, its performance was evaluated using data from 30 new patients, with Cohen's kappa coefficient of agreement measured. Additionally, by using the post-study system usability questionnaire, feedback was obtained from 10 infertility experts to test system's usability. Results: Ten variables of female age, anti-Mullerian hormone, endometrial thickness, follicle size, sperm count, sperm morphology, number of retrieved oocytes, number of retrieved metaphase I oocytes, number of retrieved MI oocytes, and embryo quality were identified as the features for all the 5 prediction models. Adaboost prediction model with 90.37 accuracy, 88.98 sensitivity, 90.58 detectability and 0.94 area under the ROC curve was found to outperform other models and so was used in system design. The results of the evaluation of the system's performance showed an agreement of 86.5% between the system's prediction and the actual result. Also, the results of the system usability testing showed the overall satisfaction of the users with the system as 1.6 out of 7 points (87.14%). Conclusion: The clinical decision support systems emerges as a valuable tool for infertility clinicians, offering the ability to predict the success of IVF. Using this system not only assists doctors in delivering more precise diagnoses but also serves as a preventive measure for infertile couples, protecting them from potential side effects and mitigating treatment costs. K-12 Tissue engineering and stem cell-based therapeutic strategies for infertility diseases Ebrahimi S1, 2. Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran. Department of Biomedical Engineering, University of Minnesota, Minneapolis, USA. Email: somaye.ebrahimi@gmail.com Infertility is a global health concern affecting millions of individuals, often resulting from ovarian dysfunction, uterine disorders, or impaired gametogenesis. Conventional treatments, such as hormone therapy and assisted reproductive technologies, have limitations in efficacy and long-term outcomes. Tissue engineering and stem cell-based therapies have emerged as innovative approaches to restore reproductive function by regenerating damaged tissues and enhancing fertility potential. Here we explore the latest advancements in stem cell applications, including embryonic stem cells, induced pluripotent stem cells, and adult stem cells, for the treatment of infertility-related diseases such as premature ovarian insufficiency, endometrial dysfunction. Additionally, it discusses the role of biomaterials and scaffold-based strategies in mimicking the natural reproductive microenvironment to support cell growth, differentiation, and tissue repair. Furthermore, key challenges, including immune compatibility, ethical considerations, and clinical translation, are addressed. K-13 Review of artificial intelligence in modern midwifery care in infertility: Benefits and challenges Farajkhoda T1, Rezaeikoopaei Z2. Research Center for Nursing and Midwifery Care, Non-Communicable Diseases Research Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Student Research Committee, Faculty of Nursing and Midwifery, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Email: farajkhoda_t@yahoo.com Midwives are as one of the first line of infertility service providers. The worlds of virtual care, chatbots, robotics, and data analytics, help clinical decision making and have influence on midwives, their practice and patient outcomes in infertility treatment and care. Artificial intelligence (AI) includes virtual reality, voice assistive technology, natural language processing, image recognition, robotics, expert rule-based systems, and machine and deep learning. Some benefits and challenges are discussed in this review study. Benefits of AI in infertility care are effectiveness in midwifery training, performing some routine care, providing qualified and correct data, fast processing and quick access to the data, help in better evidence decision-making, reducing the workload, better ability for infertility care needs assessment, care planning, infertility medication management, early detection of worsening, patients education and counseling, staff mix planning, and reducing administrative burden. Challenges are inability to make decisions in complex situations, uncertainty about data security, privacy, ethical and legal consideration, data bias, internet speed, influence on empathetic care, potential impacts on person-centered care, lack of face-to-face care, cost, potential cyber-attacks, accountability and transparency, creating a sense of lack of independence, and the non-uniformity of people's ability to use, potential of misinformation and plagiarism in midwifery research area. Since the midwives needs to consider all features of a client's needs and problems, therefore AI cannot substitute the core and key midwifery care. But, it can be considered as a complement in midwifery care for training and counseling in infertility. In addition, there is need for clear guidelines and regulations to ensure that AI is provided and applied ethically and responsibly. Also, midwives must realize the link between the data they collect and the AI technologies they use. Shaping analytics for midwifery practice is necessary such as clinical analytics, operational analytics, and behavioral analytics. It is recommended that midwives must learn about AI in midwifery practice and infertility clinical settings, how the data are produced and stored, communication with healthcare providers, clients, and families, and its ethical, legal and social considerations. K-14 Time lapse system and assisted reproductive technology Faramarzi A. Fertility and Infertility Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran. Email: a.faramarzi90@gmail.com The optimal embryo culture, receptive endometrium and precise embryo evaluation and other factors can affect on the success of assisted reproductive techniques (ART). The single embryo transfer avoids multiple gestations risk and becomes routine in ART labs. Although, the embryo selection is traditionally based on snapshot morphological parameters, there is no exact relation between embryo quality and traditional morphology. The conventional embryo selection is subjective, intra and inter observer variations lead to lower optimal ART outcome. Thus, transfer of more than one embryo is a routine practice in ART lab, potentially leading to high-risk multiple gestations. Time-lapse system (TLS) monitors development of embryos without optimal culture conditions disturbance. It provides large abundant of dynamics developmental potential of embryo with safe approach. It is assumed that the exact timing of developmental events, such as timing of cleavage divisions, cell cycle intervals and blastulation is correlated to improved ART outcomes. Furthermore, several predictive models for implantation, aneuploidy, pregnancy and live birth have been created based on embryo morphokinetics parameters. The potential advantages of omitting disruption stable embryo culture condition with TLS are more likely to be cleared when embryos are cultured to blastocyst. However, the TLS suggests improvements in ART outcomes compared to conventional incubators is still controversial. In addition, TLS shows atypical phenotypes of embryo development that may worse competence potential. Atypical phenotypes including direct cleavage, reverse cleavage, multinucleation and blastocyst collapse can compromise embryo competence and indicate aneuploidy and higher rates of degeneration. In addition, TLS might be beneficial in other situation, including protocol standardization and research projects, so indicating it as a non-add-on technology. Although, TLS and aneuploidy screening have been introduced to improve live birth rate, the success rate remain non ideal. The use of artificial intelligence (AI) has become significantly common in the medical field and is significantly being leveraged in the ART lab to improve ART success rate. Various studies have been showed that utilization of AI in TLS as an automated unbiased method to embryo evaluation. In order to improve the success, it is important to design new approach for describing AI outcomes and improved collaboration and communication among ART labs to enhance accuracy and reliability algorithms. As, integration of TLS and AI could enhance live birth rate by more accurate and effective embryo assessment and reliable morphokinetic algorithms. Further large studies, which design the comprehensive algorithms including various functions and the doing large randomized controlled trials, might potentially show the future direction of AI development in the ART field. K-15 Infection disease and reproductive cancer Farashahi Yazd E. Stem Cell Biology Research Center, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Email: ehsanfarashahi@yahoo.com Reproductive cancers remain one of the most pressing global health challenges, threatening millions of lives worldwide, with growing evidence highlighting the critical role of persistent infections in their development. Among these, human papillomavirus (HPV) and chlamydia trachomatis stand out as 2 major contributors. High-risk HPV strains, such as HPV-16 and HPV-18, are directly implicated in cervical cancer, accounting for approximately 70% of global cases. Similarly, chlamydia trachomatis, a prevalent sexually transmitted infection, indirectly promotes carcinogenesis by inducing chronic inflammation, tissue damage, and creating a microenvironment conducive to malignant transformation. Beyond these pathogens, emerging research underscores the potential involvement of other infectious agents, including herpes simplex virus, epstein-barr virus, helicobacter pylori, trichomonas vaginalis, human immunodeficiency virus, and cytomegalovirus, which may contribute to cancer development through mechanisms such as immune dysregulation, genomic instability, and epigenetic alterations. For instance, individuals with specific polymorphisms in immune-related genes like HLA-DQ or TLR9 may exhibit impaired clearance of HPV, increasing their susceptibility to persistent infection and subsequent malignancy. Prevention strategies, including HPV vaccination, early detection via molecular diagnostics (e.g., pap smears, HPV DNA tests), and timely treatment of infections like chlamydia, are essential to reducing the global burden of infection-driven reproductive cancers. Advanced technologies such as next-generation sequencing are now enabling precise identification of genetic variants associated with increased susceptibility to infection-related cancers. Addressing healthcare disparities, particularly in low-resource settings, remains crucial to ensuring equitable access to these interventions. K-16 Redesigning life: Ovarian germ cells are the intelligent sleepers Fathi R, Eivazkhani F. Department of Embryology, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, Academic Center for Education, Culture and Research (ACECR), Tehran, Iran. Email: rfathi79@gmail.com The male and female gonads are complex cells and molecules that work together to produce the sex cells (eggs and sperm). These cells later lead to the maintenance of the generation in animals and enable the survival of living organisms. The precursor cells of the eggs in the ovarian tissue are managed under the influence of a guiding process to progress towards maturity. This process, which occurs in the ovary of an adult woman, takes about a year from the activation of the most basic elements, the primordial follicles, to the time of ovulation. This provides sufficient time for the necessary capacities to be created in an immature oocyte. There are several reasons why, despite the presence of these precursor cells, an individual cannot produce the mature eggs necessary for fertilization. One of the most critical factors affecting the production of mature oocytes is its surrounding environment. The interaction and reactions between the precursor cells and the surrounding extracellular matrix can provide suitable management for the creation of the fertility capacity. This issue is so important that the slightest change in the growth environment of progenitor cells can disrupt the process of producing mature eggs and make a person infertile. Some researchers believe that the number of these progenitor cells is finalized during the embryonic period and is no longer able to multiply and increase in adulthood. However, others believe that these cells are latent in the ovarian tissue and awaken at a specific time and leading to the production of the new generation of eggs. This is if the necessary conditions are created by changing the growth environment of these cells so that the progenitor cells are saved from the trap of defective maturation and return to growth and life again. At the Royan Research Institute, Tehran, Iran we tried to first prove the presence of these cells, and now we are among the scientific centers that claim the presence of these cells in ovarian tissue. Secondly, we proved their ability to multiply during a 2-wk in vitro culture. Following this success, we sought to change the niche of these cells and provide a new environment for their growth by creating a structure called an artificial ovary. After transplantation of the artificial ovary, which consisted of a new scaffold and a collection of cells isolated from the ovaries of women with cancer, we observed the differentiation of oocyte progenitor stem cells into oocytes and the formation of new primordial follicles. We are currently investigating other methods to increase the efficiency of production and proliferation of these cells during in vitro culture and subsequent transplantation. K-17 Design and in silico analysis of tetrazoloquinazoline derivatives with anti-breast cancer potential against MCF7 cells Frimayanti N, Yaeghoobi M, Octarizal R, Cindy Nurfatimah A. Sekolah Tinggi Ilmu Farmasi Riau, Jln Kamboja Panam Pekanbaru Riau, Indonesia. Email: nenifrimayanti@gmail.com Background: The uncontrolled growth of breast tissue cells is a disorder known as breast cancer. Objective: The potential of several synthetic and natural chemicals, including quinazoline, as anticancer drugs has been investigated. A variety of bioactivities, including antimalarial, antifungal, antibacterial and anticancer properties, have been demonstrated using quinazoline derivatives. Materials and Methods: This study used molecular docking studies with molecular operating environment software to synthesize substituted tet-razoloquinazoline and assess its potential as an anticancer drug. Additionally, the binding stability of the protein-ligand complex was examined using molecular dynamics. Additionally, the website https://www.swissadme.ch was used to evaluate the physicochemical and pharmacokinetic characteristics of quinazoline compounds. MTT assay was used to assess the cytotoxic activity of the compounds. Results: According to the docking data, the range of binding free energies for modified tetrazoloquinazoline differed significantly from that of the positive control. Additionally, lipinski's rule of five is met by substituted tetrazoloquinazoline compounds, suggesting that they have good permeability and are readily absorbed. The cytotoxic action of the compounds was determined to be non-cytotoxic, with an ICso value greater than 1000 ppm. Conclusion: It has cleared the path for the development ofpromising next-generation medications to treat breast cancer. K-18 A case-series study for evaluating the controlled ovarian stimulation in cancer patients under 18 years Ghafari F, Yahyaei A, Moridi M. Department of Endocrinology and Female Infertility, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran. Email: ghafaryf@yahoo.com The preservation of fertility in adolescent girls undergoing puberty is a significant concern for both healthcare providers and parents. Oocyte cryopreservation is typically considered a standard medical procedure for individuals aged 18 and older. However, emerging evidence indicates that mature oocyte cryopreservation may be feasible for adolescent girls, although ovarian stimulation in this demographic presents unique challenges. This case series represents the first documentation of ovarian stimulation and oocyte cryopreservation in female cancer patients under the age of 18, who were referred to the Royan Institute in Tehran, Iran, before commencing cancer treatment between November 2015 and February 2021. Oocyte cryopreservation was successfully performed in 7 patients (5 diagnosed with hodgkin lymphoma, 1 with ewing sarcoma, and 1 with an osteogenic tumor). Additionally, embryo cryopreservation was conducted for one patient with dysgerminoma, while another patient with a germ cell tumor underwent both oocyte and embryo cryopreservation. Unfortunately, no oocytes were retrieved from the patient diagnosed with medulloblastoma. In one case involving a hodgkin lymphoma patient, half of the ovarian tissue was cryopreserved prior to the ovarian stimulation process. Oocyte cryopreservation presents a viable option for fertility preservation in adolescent cancer patients. However, the application of this method in individuals under 18 yr of age is contingent upon the demonstration of acceptable fertilization rates and successful live births resulting from oocyte cryopreservation in this age group. K-19 Performance indicators and score in in vitro fertilization centers Ghaffari Novin M. Department of Biology and Anatomical Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran. Email: mghaffarin@yahoo.com Infertility is a global concern, and assisted reproductive technology (ART) is the mainstay remedy. The complex process of ART includes both clinical work and laboratory procedures. Therefore, effort have been done to define reliable performance indicators based on clinical and laboratory parameters to essentially put a reliable internal quality control on in vitro fertilization (IVF) journey. As the first glimpse, Vienna consensus in 2017 defined the laboratory indicators. Further, Vienna consensus in 2021 defined indicators for clinical practice in ART. As a crystal-clear concern, expert working groups are trying to consent on a minimum number of indicators to not only perform quality control and constant monitoring of clinical and embryological features, but also to score each IVF center. The list of indicators is categorized as the key performance indicators (KPI), performance indicators and recommendation indicators. As the latest consensus in Italy, indicators were stratified based on age, response to ovarian stimulation and adoption of preimplantation genetic testing for aneuploidies in the reference population. Parallelly, competence and benchmark values were defined for each indicator as the lower and upper reference margins of accepted performance. As the KPI, cycle cancellation rate (before OPU), late follicle-to-oocytes index, proportion of metaphase II oocytes at intracytoplasmic sperm injection (%), complication rate after OPU (%), clinical pregnancy rate (%), multiple pregnancy rate (%), miscarriage rate and rate of cycles with moderate- severe ovarian hyperstimulation syndrome (%) were selected for clinical features and intracytoplasmic sperm injection fertilization rate, proportion of embryos with ≥ 8 cells on day 3 and total blastocyst development rate were selected for laboratory features. Finally, by weighting of each KPI and providing an average formula, the performance of IVF centers can be scored as the low, average, good, or excellent. Though IVF fertilization rate, oocytes cryo-survival rate, embryo cryo-survival rate: > 50%, blastocyst cryo-survival rate, successful biopsy rate, follicular output rate and cumulative live birth rate were defined as the PIs, they were not applied in the average formula scoring. This point paves the way for reconsidering the KPI and PI selection specifically in teaching hospitals that nonexpert individuals are performing critical laboratory and clinical performance. K-20 Uncovering the important gene variants and biological processes implicated in spermatogenic failure using whole-genome sequencing Ghasemi N. Abortion Research Centre, Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Email: Nghasemi479@gmail.com Male factors are involved in up to half of all infertility cases. The causes could be categorized into 4 main areas. First, dysfunction of the hypothalamic-pituitary axis, second, quantitative defects in sperm production, third, qualitative defects in sperm production, and the last, issues with ductal obstruction or function. Spermatogenesis is a complex process. Usually genetic testing has mainly been limited to karyotype analyses and Y-chromosome microdeletion testing. Despite significant progress in clinical genetics, a diagnosis is still unclear for up to 80% of men with infertility. Recent advances in genome sequencing have the potential to improve diagnostic capabilities and develop new treatments targeting newly discovered genetic factors associated with male infertility. It is important to note that mutations in certain genes can either positively or negatively predict the success of sperm retrieval from the testis. The goal of this study is to uncover the causative genes, variants and biological processes implicated in spermatogenic failure through whole-genome sequencing. Whole blood samples were collected from 10 non‐obstructive azoospermia and 10 oligoasthenoteratozoospermia men with normal karyotype, no microdeletions of the Y chromosome, no history of varicocele, testicular torsion, and cryptorchidism. whole-genome sequencing was performed using Illumina HiSeq X. The results showed important and interesting gene mutation and some new variants, which cause essential problem in spermatogenesis. Some of these genetic changes could affect other aspect of men health, which should be more important and life threatening. K-21 Effects of culture medium on embryo quality Halvaei I. Department of Anatomical Sciences, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran. Email: ihalvaei@gmail.com The quality of culture media is very important for the success of in vitro fertilization, as it affects gamete quality and embryo development. Considering important factors and conditions, such as temperature, pH, and oxygen levels is essential for embryo quality. A comprehensive quality control program including monitoring of infection control is recommended in this regard. Following the international standards and continuous monitoring of laboratory conditions are crucial for improving IVF outcomes. K-22 Human oocyte vitrification: Current challenges and opportunities Hassani F. Department of Embryology, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran. Email: F.hassani@royaninstitute.org Oocyte vitrification has been utilized for preserving fertility in cancer patients, as certain treatments can harm the ovaries, and also for elective fertility preservation to delay starting a family. Additionally, the vitrification of oocytes has facilitated the establishment and expansion of oocyte donation programs and oocyte banking. Vitrification changes oocytes into a glass-like state both inside and outside the cell that lacks any crystal formation. This state free of crystals is accomplished by subjecting the oocytes to vitrification solutions with high concentrations of cryoprotectants, which aim to quickly replace most water molecules in the oocyte's internal compartments and cytoplasm through osmosis. After dehydration, ultra-rapid cooling (exceeding 10,000°C per minute) occurs, resulting in the glassy solidification of the contents of the cell, while fully maintaining the structural and functional integrity of the oocyte. The vitrified oocytes are stored in cryostorage, preferably immersed in liquid nitrogen, until they undergo the warming process. During the warming phase, the vitrified oocytes are taken out of their storage and, in accordance with standard operating procedures, placed in a preheated medium that contains high sucrose, followed by a series of washes in media with progressively lower sucrose concentrations. The goal of the warming process is to rehydrate the oocytes through osmosis and gradually substitute the cryoprotectants with water. For many, the warming procedure holds greater significance than the cooling process since ice crystal formation can also occur during warming, leading to cell death. The anticipated recovery rates after warming oocytes typically range from 80-90%. Currently, most fertility clinics around the world provide oocyte cryopreservation services for women looking to preserve their eggs for later use. The effectiveness of a vitrification program greatly depends on the skill and knowledge of the operators, making it essential for clinics and lab managers to implement a robust and proactive total quality management system. It is crucial to closely monitor and optimize the entire process -from stimulation to oocyte vitrification, warming, and the performance of embryos developed from the thawed oocytes- both as a complete program and on an individual operator basis. Every fertility clinic that provides oocyte vitrification to patients should be capable of sharing their own key performance indicators in accordance with international benchmarks. Additionally, they must ensure that prospective patients are completely informed about what to anticipate following the warming process before they move forward with oocyte preservation treatment. It is advisable to utilize commercially available vitrification and warming reagents with registration details rather than homemade alternatives. It is best to choose products that undergo thorough quality control measures, including mouse embryo assays, bacterial endotoxin assessments, sterility evaluations, and pH and osmolarity testing. Assisted reproductive technology laboratories should ideally maintain 2 brands of vitrification and warming reagents to address situations involving defective batches or irregular supply issues. K-23 The potential of extracellular vesicles in regenerative medicine Hashemi SM. Department of Immunology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran. Email: smmhashemi@gmail.com Extracellular vesicles (EVs), including exosomes and microvesicles, have emerged as pivotal mediators of intercellular communication with significant implications for regenerative medicine. Secreted by various cell types, EVs carry a rich cargo of proteins, lipids, and nucleic acids that reflect the physiological status of their parent cells. Recent research has demonstrated their ability to modulate inflammation, promote tissue repair, and stimulate cellular proliferation and differentiation. Unlike traditional cell-based therapies, EVs offer a cell-free alternative that reduces immunogenic risks and enhances safety profiles. This lecture will explore the current understanding of EV biology, highlight preclinical and clinical advances in their use for tissue regeneration, and discuss challenges such as standardization, large-scale production, and regulatory considerations. In this lecture, I would like to review preclinical studies conducted by our team in the department of immunology in Shahid Beheshti University of Medical Sciences, Tehran, Iran on the effect of EVs in controlling inflammation and inducing regeneration in animal models of inflammatory and autoimmune diseases. K-24 Advanced research in the treatment of polycystic ovary syndrome Hosseini S. Department of Obstetrics and Gynecology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran. Email: shosseini@sbmu.ac.ir Polycystic ovary syndrome (PCOS) is a prevalent endocrinopathy involving androgen excess, and anovulatory infertility. The disorder is also associated with many comorbidities such as obesity and hyperinsulinemia, and an increased risk of cardiovascular complications. Reproductive, endocrine, and metabolic symptoms are highly variable, with heterogenous phenotypes adding complexity to clinical management of symptoms. Pharmacological agents to target androgen excess, modulation of kisspeptin signalling to target central neuroendocrine dysregulation, and novel insulin sensitisers to combat peripheral metabolic dysfunction are another novel treatment for this disorder. Emerging research is also considering the role of gut health and the microbiome in PCOS, with probiotics and prebiotics being studied for their potential benefits. These targets reflect a comprehensive approach to treating PCOS by addressing its multifaceted nature. K-25 Sexual dysfunction and female infertility Hosseini Kasnavieh F. Department of Psychiatry, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Email: hosseini.k.f@gmail.com Female sexual dysfunction and infertility are common condition and associated with couple distress. The relationship between female infertility and sexuality is complex and multifactorial. The prevalence of sexual dysfunction is greater in infertile women and women with couple infertility, such as decreased in sexual desire, arousal and satisfaction. Extensive studies found that diagnosis and treatment of infertility are related to the occurrence of sexual dysfunction. Infertility is a major life stressor and can negatively impact on mental health. Women with infertility are more prone to depression and anxiety, thus alteration in mental health can lead to sexual dysfunction. On the other hand, sexual dysfunction can negatively affect woman’s self-esteem, quality of life and interpersonal relationships. In conclusion female sexual disorders are frequent effects of infertility with sever consequence on overall wellbeing. These consequences represent an additional burden for women with infertility and need to holistic approach to infertility treatment. K-26 The influence of paternal lifestyle factors on recurrent implantation failure following assisted reproductive technology Izadi M1, 2. Research and Clinical Center for Infertility, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Andrology Researcvh Center, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Email: mizadi890112@gmail.com Recurrent implantation failure (RIF) refers to cases in which women have had three failed in vitro fertilization attempts with good quality embryos. The failure of embryo implantation can be a consequence of uterine, male, or embryo factors, or the specific type of in vitro fertilization protocol. Treatment approaches should be directed toward individual patient cases. Currently, there is little evidence to indicate what mechanisms dictate unsuccessful implantation. In many couples presenting with RIF, the exact cause is never identified and therapeutic options are disappointedly limited. There is growing concern surrounding potential adverse reproductive health effects resulting from lifestyle and environmental factors. Since embryo quality and endometrial microenvironment are influenced by a complex balance of physiological and environmental factors, it is possible that the couples with RIF are more susceptible to the lifestyle and environmental exposures. Seminal parameters, which are predictors of male fertility potential, have been declining over time worldwide. This decline in semen quality is likely multifactorial, and a variety of lifestyle factors have been proposed to influence spermatogenesis and reproductive function. The role of reactive oxygen species and oxidative stress in semen quality decline has also been investigated. Seminal levels of reactive oxygen species, semen parameters and testicular and pituitary-gonadal axis dysfunction are known to be influenced by lifestyle. Fertilization and preimplantation embryo development are influenced by sperm‐derived factors that may impact assisted reproductive technology outcomes. Lifestyle factors are under one’s own control and could be modified to improve general health; therefore, adjusting for their influence may yield valuable information for counselling couples submitted to ART. The aim of this study was to describe the influence of environmental and occupation exposure, medications and physical activity on semen parameters, and results of ART in patients submitted to semen analysis for infertility investigation followed by ART. Male occupation may be a potential source of adverse exposure to chemical, physical and psychological factors. It is known that testicular function is extremely sensitive to ionising radiation. Transitory reduced sperm count and even long‐lasting or permanent azoospermia could result from radiation exposure, depending on the dose. It is important to highlight that not only environmental influences, but also some sexually transmitted diseases (e.g., gonorrhea, chlamydia), which are closely related to lifestyle, may affect spermatogenesis, leading to male infertility. Consequently, it would be better to recommend that male partners reconsider their lifestyle during in vitro reproduction treatment. K-27 Advanced nursing care in managing in vitro fertilization challenges in patients with underlying conditions: A multidisciplinary approach Javadi M. Research Center for Nursing and Midwifery Care, Non-communicable Diseases Research Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Email: mostafajavadi1880@gmail.com In vitro fertilization (IVF) represents a cornerstone of assisted reproductive technology, offering hope to millions of couples struggling with infertility. However, its success is significantly influenced by underlying health conditions such as obesity, diabetes, hypertension, and other comorbidities. These conditions not only reduce IVF success rates but also elevate maternal and fetal risks, leading to long-term health complications. A multidisciplinary approach integrating expertise from medicine, midwifery, nursing, nutrition, and psychology is essential to optimize outcomes for this high-risk population. This reviewe explores the scientific rationale behind multidisciplinary care in IVF candidates with underlying conditions, its clinical advantages, and implementation strategies, with a particular focus on the critical role of professional nurses. Nurses serve as the cornerstone of interdisciplinary healthcare teams, leveraging their clinical expertise, patient advocacy, and systems thinking to optimize patient outcomes. Their role extends beyond task based care to include; real-time data synthesis, risk mitigation, and coordination of comprehensive patient-centered interventions and functions that are indispensable in managing complex medical cases. Fundamentally, nurses embody the synergy of evidence-based practice and human-centered care, making them indispensable in modern, multidisciplinary healthcare ecosystems. This approach is particularly significant in the continuum of IVF care, before, during, and after the procedure. Research underscores that nurse-led interdisciplinary care improves therapeutic outcomes by integrating biomedical precision with a biopsychosocial framework. This dual focus ensures that IVF treatments align with the physiological, emotional, and socio-economic needs of patients, thereby enhancing the overall effectiveness and patient-centeredness of reproductive healthcare strategies. K-28 Oxidative stress and PCOS Karimzadeh Meybodi MA. Madar Hospital, Yazd, Iran. Email: Makarimzadeh@yahoo.com Polycystic ovary syndrome (PCOS) is one of the most common hormonal disorders, occurring in 5-10% women in reproductive ages. Its etiology is still unknown. Oxidative stress is now recognized to have an important role in the pathophysiology of many different disorders, including PCOS. Although intracellular reactive oxygen species production and propagation are controlled by highly complex antioxidant enzymatic and non-enzymatic systems. Understanding of mechanisms that oxidative stress is important to develop strategies for prevention and therapy of PCOS. Uyanikoglu et al. found that: in the blood of PCOS patients, the total oxidation state, total antioxidation state and oxidative stress index were all higher than those of healthy women in the control group, and the total oxidation state was higher than the total antioxidation state, indicating that there was an imbalance between oxidants and antioxidants in PCOS patients. Similarly, the meta-analysis results of Murri et al. suggested that the levels of oxidative stress markers in the blood of PCOS patients, such as homocysteine, asymmetric dimethylarginine, malondialdehyde and superoxide dismutase, were significantly higher than those in the control group, while the levels of antioxidant markers, such as glutathione and paraoxonase-1, were significantly lower than those in the control group. Antioxidants in the body include antioxidant enzymes and non-enzymatic antioxidants. Antioxidant enzymes include superoxide dismutase, catalase, and glutathione peroxidase, and non-enzymatic antioxidants include vitamin C, vitamin E, GSH, taurine, hypo taurine, zinc, selenium, carotenoids, and metal binding proteins. All of them have the ability to scavenge oxidative active molecules and maintain the oxidant/antioxidant balance. K-29 Human papilloma virus and male infertility Kheradmand A. Urology Department, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran. Email: kheradmand_a@yahoo.com Human papillomavirus (HPV) has garnered attention as a potential contributor to male infertility, with emerging evidence suggesting that HPV infection may significantly impact reproductive health. HPV is a small, non-enveloped, double-stranded DNA virus that primarily infects epithelial tissues. HPV oncogenic potential is largely attributed to the E6 and E7 oncoproteins, which interfere with tumor suppressor proteins. While HPV is well-known for its role in cervical cancer, its implications for male fertility are increasingly being recognized. Recent studies indicate that HPV prevalence is notably higher in infertile men compared to their fertile counterparts. The virus can adversely affect sperm quality by impairing motility, morphology, and overall sperm viability. Specifically, HPV has been linked to increased oxidative stress in semen, which can lead to DNA fragmentation and mitochondrial damage in sperm cells. This oxidative damage may result in telomere shortening and epigenetic alterations, further compromising sperm function. Moreover, the presence of HPV in semen has been associated with the development of antisperm antibodies, which can hinder fertilization by targeting and neutralizing sperm. Research has also shown that clinical pregnancy rates are significantly lower in women inseminated with HPV-positive semen, while miscarriage rates are higher among couples where the male partner is HPV-positive. Current guidelines from health organizations emphasize the need for more comprehensive studies to explore the effects of HPV on male fertility and the potential benefits of vaccination. Techniques such as direct swim-up have demonstrated some efficacy in reducing the number of HPV-infected sperm; however, more research is warranted to establish effective sperm preparation methods for removing HPV DNA from washed spermatozoa. In conclusion, while the link between HPV and male infertility is becoming clearer, further investigation is essential to elucidate the underlying mechanisms and develop effective strategies for prevention and treatment. Understanding these interactions will be crucial for improving reproductive outcomes in couples affected by infertility related to HPV. K-30 The role of extracellular vesicles in spermatogenesis Koruji M1, 2. Stem Cell and Regenerative Medicine Research Center, Iran University of Medical Sciences, Tehran, Iran. Department of Anatomy, School of Medicine, Iran University of Medical Sciences, Tehran, Iran. Email: koruji.m@iums.ac.ir Exosomes, small extracellular vesicles ranging from 30-150 nm in diameter, play a crucial role in intercellular communication and have emerged as significant mediators in various biological processes, including spermatogenesis. These nano-sized vesicles are secreted by various cell types within the male reproductive system, including Sertoli cells, Leydig cells, and germ cells. During spermatogenesis, exosomes facilitate the transport of proteins, lipids, and RNA molecules, thereby influencing the development and maturation of spermatozoa. They are involved in the regulation of gene expression, cell signaling, and the maintenance of the testicular microenvironment, which is essential for optimal sperm production. Recent studies have highlighted the potential of exosomes to: modulate immune responses, protect germ cells from oxidative stress and promote cell survival. Furthermore, exosomal cargo can serve as biomarkers for male fertility, providing insights into reproductive health and potential therapeutic avenues for addressing infertility. In conclusion, exosomes represent a dynamic component of spermatogenesis, contributing to the intricate processes that govern sperm development and function. Understanding their mechanisms may pave the way for novel strategies in reproductive medicine and fertility preservation. K-31 Investigation and analysis of the synergistic effects of methotrexate and curcumin encapsulated in PLGA nanoparticles on MCF-7 breast cancer cell lines Lee VS. Department of Chemistry, Center of Excellence in Quantum Information Science and Technology (QIST), Faculty of Science, Universiti Malaya, Kuala Lumpur, Malaysia. Email: vannajan@um.edu.my; vannajan@gmail.com Background: Breast cancer treatment presents significant challenges, particularly in optimizing therapeutic efficacy while minimizing side effects. Objective: Polymer nanoparticles offer a promising avenue for improving drug delivery systems. This study focuses on the design, synthesis, and evaluation of PLGA nanoparticles encapsulating methotrexate and curcumin, investigating their synergistic effects on the MCF-7 breast cancer cell line. Materials and Methods: PLGA nanoparticles were synthesized via the W/O/W solvent evaporation method. Characterization was conducted to determine particle size, zeta potential, and polydispersity index using a horiba zeta sizer. Morphological analysis was performed using scanning electron microscopy and atomic force microscopy. Cellular uptake was evaluated using fluorescence microscopy, while fourier-transform infrared spectroscopy analyzed molecular interactions. Drug loading efficiency and release profiles were assessed over 48 hr using dialysis bags. Cytotoxicity was determined through MTT assays conducted on MCF-7 cells. Molecular docking studies performed against the VEGFR2 kinase receptor displayed a binding orientation of the compounds in the catalytic binding pocket of the receptor. Results: The synthesized nanoparticles demonstrated high drug loading efficiency and favorable size and zeta potential, indicative of stability. Morphological studies revealed a desirable spherical shape. Fluorescence microscopy confirmed efficient cellular uptake, and cumulative drug release was consistent over 48 hr. The combination of methotrexate and curcumin exhibited significant synergistic cytotoxic effects, enhancing therapeutic efficacy. Statistical analysis highlighted a marked increase in drug release under cancer-relevant conditions, including elevated temperatures and acidic pH levels, compared to normal physiological conditions. Conclusion: The study establishes the potential of PLGA nanoparticles loaded with methotrexate and curcumin as an effective and targeted drug delivery system for breast cancer treatment. These findings underscore the promise of polymer-based nanotherapeutics in advancing novel therapeutic strategies. K-32 Digital health technologies to enhance the quality of life of individuals experiencing infertility: A review Lotfi R1, Mahmoodi Z2. Reproductive Health, Alborz University of Medical Sciences, Karaj, Iran. Social Determinants of Health, Alborz University of Medical Sciences, Karaj, Iran. Email: lotfi_razieh@yahoo.com, lotfi.razieh@gmail.com Background: Infertility as a multifaceted challenge may profoundly cause psychosocial, emotional, and relational problems that compromise the couple’s quality of life (QoL). Objective: With the rapid advancement of digital health technologies, tele-health, and tele-counseling have been recognized as innovative interventions to support individuals with infertility. This review focuses on current and developing technologies designed to enhance QoL of individuals with infertility. Materials and Methods: Relevant articles were searched in PubMed, Scopus, and Google Scholar databases. The search was performed using keywords such as QoL, infertility, internet, web, artificial intelligence (AI), mobile application, RCT, e-health, telehealth, virtual, and tele-counseling. Time limitation was considered 10 yr (from 2015-2025). Papers were exported into the Endnote software and screened for relevancy and duplicates. Results: New technology, such as mobile applications and internet-based programs, maybe a feasible option for enhancing QoL of infertile persons. There was no interventional study that implemented AI to assess the QoL of infertile patients. Most studies have shown great potential in andrology and introduced the role of AI in the diagnosis and treatment of male infertility. The results explore the use of AI in various aspects of reproductive medicine, such as assisted reproductive technologies, fertility tracking, and laboratory automation. Tele-counseling platforms, including video conferencing, mobile applications, and online support groups, provide a convenient and stigma-free environment for couples. Many studies reveal the effect of the integration of digital tools, such as self-help modules, virtual peer support networks, and many others focused on emotional distress, anxiety, depression, and stress, although there are few studies directly working on QoL of these groups. Conclusion: There were a limited number of web-based or virtual RCT studies directly focused on QoL of infertile individuals. Due to the potential of AI technology to improve success rates and reduce the emotional and financial burden of infertility, this paper highlights the role of this technology in providing personalized care support. Future research should implement and better integrate advanced internet-based technologies to enhance QoL of individuals with infertility. K-33 Effective factors in blastocyst formation in laboratory conditions Mangoli E. Research and Clinical Center for Infertility, Yazd Reproductive Science Institiue, Shahid Sadoughi University of Medical Science, Yazd, Iran. Email: es.mangoli@gmail.com Embryo transfer (ET) is one of the critical steps in an assisted reproduction cycle. Recently, extending culture from cleavage-stage to blastocyst and single ET has been an increasing trend to transfer. In the blastocyst transfer cycles, the timing of exposure of the embryo to the uterine environment is more analogous to a natural cycle and permits embryo self-selection after activation of the embryonic genome on day 3. On the other hand, the in vitro environment is likely to be inferior to that in vivo, and in vitro culture beyond embryonic genomic activation could potentially harm the embryo. Although many clinicaltrial studies have stated no significant differences between blastocyst and cleavage stage transfer for assisted reproductive technology outcomes. The last updated version of the Cochrane review concluded that at ET blastocyst-stage had higher live birth and clinical pregnancy rates compared to cleavage-stage embryos for fresh ET (41% vs. 31% live birth). Although there is a benefit favoring blastocyst‐stage transfer in fresh cycles and sequential ET is a good treatment option for improving pregnancy outcomes, in poor response patients and patients with poor-quality embryos. However, how it is possible to have more and better quality blastocyst embryos? Extended culture requires specific culture conditions of temperature and gas concentration, as well as a medium compositionto decrease epigenetic disorders. Blastocyst formation is highly dependent on maternal and paternal factors. The intrinsic quality of the oocyte is the key factor determining the proportion of oocytes developing to the blastocyst stage. Nevertheless, there were some important way for increasingin-vitro blastocyst formation in fresh and frozen‐thawed cycles. Group culture is one of the important factors that provide the growth factors needed by the embryo. Use of single medium like one-stepmedium is important forpreserve autocrine factors, decrease embryo stress, and created constant condition for culture. Time-lapse monitoring system is a way that creates bestconstant culture system that ideally controls embryo development condition. Culture volume is another factor that is important for embryo culture. The data showed reduced culture volume (7 vs. 25 μl) negatively impacts on early embryo development by reducing the cell number on day 3 and both blastocyst formation and quality. K-34 Infertility and its impact on partner's sexual behaviors Mazaheri Meybodi A. Department of Pssychiatry, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran. Email: mazaheri.azadeh@yahoo.com Infertility represents an emotionally challenging experience that can elicit levels of distress comparable to those associated with other significant health conditions, such as cancer or HIV/AIDS. Infertile couples frequently experience heightened emotional distress, diminished self-esteem, and a range of negative emotions, including anger, guilt, and blame directed towards their partners. Concerns about fertility, anxiety, and sexual dysfunction are more pronounced in this population compared to the general population. The interplay of stress, frustration, and depression notably adversely affects the sexual dynamics within infertile relationships. Moreover, infertility can exacerbate relational tension and diminish intimacy between partners, subsequently impacting the quality and satisfaction of their sexual experiences. The experience of infertility may also alter an individual's self-concept, leading to feelings of reduced attractiveness and a corresponding decline in sexual desire, arousal, or overall sexual satisfaction. Additionally, the quality of life for infertile couples may suffer considerable deterioration. However, a supportive partner and a positive emotional connection can significantly sustain the quality of sexual relationships. One potential risk factor contributing to increased marital conflicts among couples is the divergence in their approaches to infertility. This disparity can lead to emotional conflicts that adversely affect their sexual relationship. Research indicates that women are more engaged in infertility treatments than men, and they often express a desire to discuss their emotions related to attempts at conception. This communication plays a crucial role in fostering the emotional bond between partners. Individuals adopt diverse coping strategies to navigate the challenges posed by infertility. Some may utilize active-confronting coping techniques, such as engaging with others experiencing similar struggles, while others may rely on problem-oriented coping mechanisms. Others might resort to avoidance strategies. Access to comprehensive information from medical professionals, psychiatric counseling, psychotherapy, and participation in support groups can significantly alleviate anxiety, enhance communication, and improve the overall quality of sexual life. K-35 Adjuvants in polycystic ovary syndrome Mirhashemi ES. Ertfan Niyayesh IVF Center, Tehran, Iran. Email: Eeam3663@gmail.com In managing polycystic ovary syndrome (PCOS), various adjuvants are utilized. First, lifestyle changes and weight loss are recommended for obese women with a body mass index > 29 kg/m², as losing about 10% of their body weight can restore normal ovulation. Metformin can further enhance the effects of diet and exercise by improving insulin sensitivity and reducing androgen levels. Anti-obesity medications like orlistat can help, but bariatric surgery has shown the most significant benefits for morbidly obese women. However, weight management treatments should not be the first option. Dexamethasone is another treatment that can lower certain hormone levels in PCOS patients and improve outcomes when combined with clomiphene. Oral contraceptive pills can also decrease hormone levels and improve ovarian function when taken before clomiphene. Insulin sensitzers such as metformin and inositols have been effective in reducing metabolic issues associated with PCOS. Metformin, a common biguanide, improves insulin sensitivity and reduces elevated hormonal levels but has side effects that may affect patient compliance. While it is generally not as effective as clomiphene or letrozole for infertility, it can still be considered a cost-effective option. Myoinositol and D-chiro-inositol are promising alternatives that may improve metabolic and reproductive functions in PCOS patients, especially when used together in a specific ratio. N-acetyl cysteine has antioxidant properties and can enhance insulin sensitivity while offering some potential benefits for ovulation and menstrual regulation. It has been shown to improve progesterone levels and increase ovulation success when combined with other treatments. Other antioxidants, such as alpha-lipoic acid, vitamins C and E, and resveratrol, may also help improve metabolic conditions in women with PCOS. Melatonin and carnitine have been studied for their effects on insulin sensitivity and overall metabolic health. Selenium and chromium are essential for metabolic functions and can enhance insulin sensitivity in PCOS patients. Laparoscopic ovarian drilling is a second-line treatment for women resistant to clomiphene. Laparoscopic ovarian drilling has shown success in restoring ovulation without the risks associated with fertility drugs. Gonadotropins are also an option for these patients but come with higher costs and risks. Insulin-sensitizing supplements, like inositols, have demonstrated significant benefits for improving symptoms of PCOS. Myoinositol has shown success in restoring ovulation in many women compared to metformin. Berberine has potential as a newer treatment that may improve metabolic markers as well. Finally, sildenafil citrate is being explored for its ability to enhance endometrial receptivity and improve pregnancy rates when used alongside other fertility treatments. Additionally, growth hormone may improve egg quality and reduce oxidative stress in women with PCOS. Overall, a combination of lifestyle changes, medications, insulin sensitizers, and antioxidants can effectively manage PCOS and improve reproductive outcomes. K-36 Mental health in reproductive health settings Mohammadinasab A1, 2, 3. Croydon Assessment and Liaison Team, South London and Maudsley NHS Foundation Trust, Lodon, UK. King's College London, GKT School of Medical Education, Lodon, UK. Iranian Diaspora Group of Psychiatrists Affiliated to the Royal College of Psychiatrists, Lodon, UK. Email: abbas.mohammadinasab@slam.nhs.uk; abbass.1.mohammadinasab@kcl.ac.uk The integration of mental health services within reproductive health settings is essential to improving patient outcomes and overall well-being. Mental health disorders such as depression, anxiety, post-traumatic stress disorder, and bipolar disorder are highly prevalent among individuals undergoing reproductive treatments, with depression affecting 15-25% and anxiety impacting 20-30% of these patients. Untreated mental health conditions can lead to reduced adherence to treatment protocols, lower success rates of reproductive interventions, and increased pregnancy-related complications. This presentation will highlight the necessity of addressing mental health in reproductive health clinics, emphasizing that mental well-being is not a luxury but a fundamental aspect of comprehensive healthcare. Screening for mental health concerns in reproductive health settings plays a crucial role in early identification, reducing stigma, and improving patient care. Standardized tools such as the Edinburgh Postnatal Depression Scale, the Generalized Anxiety Disorder 7-item scale, and the post-traumatic stress disorder checklist for DSM-5 (PCL-5) provide effective means for early detection. Strategies for integrating mental health services include training reproductive health providers in mental health basics, embedding dedicated mental health professionals within clinics, and establishing clear referral pathways. Case studies demonstrate the effectiveness of these approaches, with fertility clinics that incorporate mental health professionals reporting a 25% increase in patient satisfaction and a 15% rise in treatment adherence. While challenges such as stigma, limited funding, and resistance from staff persist, solutions like awareness campaigns, securing grants, and regular staff training have proven effective in overcoming these barriers. The cost-benefit analysis underscores the value of mental health integration, highlighting long-term savings due to reduced treatment dropout rates and improved health outcomes. The call to action encourages advocacy for policy changes, pilot programs for mental health integration, and further research to strengthen the evidence base. Ultimately, integrating mental health into reproductive health settings is not just a choice but a responsibility that ensures holistic and patient-centered care. K-37 Polycystic ovarian morphology on ultrasound Moini A1, 2, 3. Department of Gynecology and Obstetrics, Arash Women's Hospital, Tehran University of Medical Sciences, Tehran, Iran. Breast Disease Research Center (BDRC), Tehran University of Medical Sciences, Tehran, Iran. Department of Endocrinology and Female Infertility, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran. Email: a_moini@royaninstitute.org Polycystic ovary syndrome is a common endocrinopathy among women of reproductive age associated with hyperandrogenism, oligo-amenorrhea, and infertility. Symptoms and their severity vary among the individuals. If the manifestation is mild, polycystic ovary syndrome may remain undiagnosed. In more severe cases, it results in a spectrum of symptoms of metabolic syndrome, insulin resistance, and cardiovascular diseases. The diagnosis is established after a physical examination and evaluating the patient’s hormonal profile. In addition to these required methods, ultrasonographic assessment of the patient’s ovaries is another non-invasive, cheap, and time-saving tool, making the examination more profound and leading to the correct diagnosis. Specific ultrasonographic parameters are used to tell the healthy and polycystic ovaries apart: the ovarian volume, ovarian follicle count, follicle distribution pattern, ovarian stromal echogenicity, and the resistance and pulsatility indices assessed using the Doppler function. K-38 How tissue engineering can help azoospermia patients; in vitro and in vivo studies Movahedin M. Anatomical Sciences Department, Medical Sciences Faculty, Tarbiat Modares University, Tehran, Iran. Email: mansoure@modares.ac.ir; mmovahedin@yahoo.com; movahed.m@modares.ac.ir Infertility affects a significant proportion of the global male population, with many cases attributed to defects in spermatogenesis. Advances in tissue engineering have facilitated the development of in vitro and in vivo systems for generating functional sperm, offering new hope for patients with non-obstructive azoospermia and other reproductive disorders. This review explores the latest developments in in vitro spermatogenesis using biomimetic scaffolds, bioreactors, and organoid cultures, as well as in vivo strategies employing transplantation techniques. Recent studies highlight the importance of extracellular matrix-based scaffolds in supporting spermatogonial stem cell (SSC) proliferation and differentiation. The use of decellularized testicular matrices has shown promise in maintaining the native microenvironment necessary for spermatogenesis. In vitro, exosome-treated dynamic culture systems have improved SSC maturation, demonstrating the potential of bioengineered niches to recapitulate the testicular microarchitecture. Additionally, 3D-printed extracellular matrix scaffolds enriched with bioactive molecules, such as laminin and fibroin-alginate, have successfully induced haploid spermatid formation in murine and primate models. In vivo approaches include testicular tissue grafting and xenotransplantation, which have enabled the generation of functional sperm from immature testicular tissues. Murine models have demonstrated successful spermatogenesis following the transplantation of cultured SSCs into host testes, suggesting a viable pathway for future clinical applications. Moreover, recent research has underscored the role of mesenchymal stem cell-derived exosomes in restoring spermatogenesis in azoospermic models, paving the way for regenerative therapies. Despite these advances, challenges remain in optimizing culture conditions, ensuring complete meiosis, and translating findings to clinical applications. Further research is needed to refine bioreactor designs, identify key molecular regulators, and enhance the scalability of these systems for human use. The convergence of tissue engineering, stem cell biology, and reproductive medicine holds great potential for overcoming male infertility and developing personalized fertility treatments. K-39 Using human pluripotent stem cells derived cardiovascular cells for disease modeling and tissue repair Na J. School of Medicine, Tsinghua University, Beijing, China. Email: jie.na@tsinghua.edu.cn Human pluripotent stem cells (hPSCs) serve as a powerful platform for disease modeling and regenerative medicine. We developed efficient protocols for differentiating cardiovascular cells and macrophages from hPSCs under chemically defined conditions. Using hPSC-derived cardiomyocytes, endothelial cells (ECs), and smooth muscle cells, we constructed 3D mini-cardiac organoids. Single-cell transcriptome analysis revealed that the 3D microenvironment enhanced cardiomyocytes maturation and led to the emergence of DLK1+ fibroblasts with immunomodulatory potential. Transplantation of mini-cardiac organoids into a rat model of myocardial infarction significantly improved cardiac function and reduced fibrosis, demonstrating their therapeutic promise. In addition, hPSC-derived ECs expressed markers of choroidal endothelial cells and could integrate into the choriocapillaris. In a rat model of choroidal ischemia, transplanted hPSC-ECs restored choroid thickness and vasculature. Remarkably, EC transplantation improves the visual function of CI rats, highlighting their potential for treating ocular diseases such as age-related macular degeneration. We also demonstrated the potential of hPSC-derived macrophages as a powerful model for investigating immune interactions between pathogens and human tissues. hPSC-MAC responded to human pathogens, including hepatitis C virus, SARS-CoV-2, and streptococcus pneumoniae, by activating distinct inflammatory and immune pathways. RNA sequencing identified pathogen-specific gene networks, and image-based analysis of iMACs interacting with hepatitis C virus demonstrated their utility in evaluating infection and therapeutic strategies. Our study highlights the versatility of hPSC-derived cells in advancing disease modeling, uncovering molecular mechanisms, and developing regenerative therapies for tissue repair and regeneration. K-40 The role of environmental pollution (microplastic and waves exposure) in male infertility Narimani N. Hasheminejad Kidney Centre, School of Medicine, Iran University of Medical Sciences (IUMS), Tehran, Iran. Email: Nima_dr2001@yahoo.com Microplastics are small plastic particles that have become pervasive in the environment, including air, water, and food sources. As microplastic pollution continues to increase, its potential effects on human health, particularly male reproductive health, have raised significant concern. Studies suggest that microplastics can enter the human body through ingestion, inhalation, and skin contact, leading to their accumulation in various organs, including the reproductive system. Research has indicated that microplastic exposure may disrupt endocrine function, which is crucial for normal male reproductive processes. The chemicals within microplastics, such as bisphenol A, have been linked to reduced sperm count, and altered hormone levels. Moreover, oxidative stress induced by microplastics has been identified as a factor contributing to male infertility. In animal models, exposure to microplastics has shown a decrease in testicular function and quality of sperm. Despite the growing evidence, the exact mechanisms by which microplastics influence male fertility remain unclear. Further research is necessary to understand the long-term impact of microplastic exposure on human reproductive health. Addressing the problem of microplastic pollution is crucial for safeguarding male fertility and public health in the future. K-41 Sexual dysfunction and male infertility Nasirian M. Department of Psychiatry, Shahid Sadughi University of Medical Sciences, Yazd, Iran. Email: Nasirian90@gmail.com Infertility is a disease of the reproductive system defined by the failure to achieve a clinical pregnancy after 12 months or more of regular unprotected sexual intercourse (and there is no other reason, such as breastfeeding or postpartum amenorrhoea). Infertility affects up to 12% of men 25-44 yr old. The relationship between male infertility and sexuality is rather complex and bi-directional: infertility can be considered either as a cause or a consequence of a sexual dysfunction. The prevalence of sexual dysfunctions is higher in infertile men and man with couple infertility. Sexual dysfunctions include: decrease in sexual satisfaction, premature ejaculation, erectile dysfunction, and anejaculation/delayed ejaculation. After finding the information about their infertility, men usually go through crises that have a negative effect on their sexual life. They might have a feeling of inadequancy, shame and lack of masculinity, lost self-esteem and confidence, feel guilty, have frustration and emotional distress. Male with infertility might suffer from depression, anxiety, lower quality of life and psychological burden. Simply focus on the outcome of sex rather than enjoyment may be the reason of performance anxiety. Infertility period affects women’s sexual life and decreases female sexual function index scores. Such sexual problems also affect partners that libido and erection quality are decreased. Treatments for infertility also can adversely affect sexuality. Sexual function and satisfaction of male and female with infertility should be assessed. The clinical assessment of psychological factors, partner-related factors, context, and life stressors with a biopsychosociospiritual model is necessary. K-42 Advanced glycation end products: Their role in spermatogenesis and fertility within lifestyle contexts Nasr-Esfahani MH1, 2. Department of Animal Biotechnology, Reproductive Biomedicine Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, Iran. Pooyesh and Rooyesh Fertility Center, Isfahan Health Center, Isfahan, Iran. Email: nasr.royan@gmail.com; mh.nasresfahani@royaninstitute.org The human genome has evolved over millions of years; however, rapid changes in our dietary habits due to industrialization have not allowed sufficient time for our genome to adapt. This mismatch has contributed to a rise in metabolic diseases, including obesity, diabetes, gout, heart disease, liver disease, and kidney disease. Additionally, new health issues such as Alzheimer’s, dementia, depression, bipolar disorders, cancer, preeclampsia, muscle wasting, and aging have emerged. Infertility is also affected by these changes. Literature reveals 2 main contributors to these health issues: 1) increased carbohydrate intake, particularly in the form of fructose, and 2) cooking styles associated with the Western diet. The rise in carbohydrate consumption, especially fructose, has led to fatty liver and diabetes, which are linked to infertility in both males and females. Furthermore, glucose and fructose interact with amino acids in our proteins, undergoing heat-induced reactions known as the maillard reaction or “browning”, resulting in the formation of toxic compounds commonly referred to as advanced glycation end products (AGEs). The degree of AGE formation is closely associated with cooking methods, with the likelihood of AGEs forming being approximately seven times higher with fructose compared to glucose. Over the past decade, our research group has focused on the relationship between AGEs and male infertility. We have demonstrated that exposure to AGEs reduces semen quality, as assessed by sperm concentration, motility, and morphology. Additionally, we found that AGEs negatively impact sperm function parameters, including DNA integrity, chromatin quality, and membrane integrity. The consequences of these effects contribute to male infertility, and in the small percentage of male mice that remain fertile, these effects have behavioral consequences. Moreover, we have shown that these changes in semen parameters and associated behavioral alterations can be transmitted to the next generation, even when fed a normal diet. Importantly, we also found that these adverse effects can be alleviated through appropriate antioxidant therapy. K-43 Effects of male hormones on recurrent miscarriages Nazari AR1, 2. Department of Surgery, School of Medicine, Rafsanjan University of Medical Sciences, Rafsanjan, Iran. Andrology Research Center, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Email: drnazari57@gmail.com The role of male hormones in recurrent miscarriages is considered as one of the possible factors. Research shows that changes in male hormone levels can affect sperm quality and lead to recurrent miscarriages. In the husbands of women with recurrent miscarriages, sperm quality has been reduced and levels of oxidative stress in semen have been increased. This could be due to the reduced production of male hormones such as testosterone that have been observed in these individuals. K-44 Regenerative medicine in reproductive systems Nikukar H1, 2. Biotechnology Research Center, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. School of Advanced Medical Sciences and Technologies, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Email: habibnik@gmail.com Regenerative medicine has emerged as an alternative to treat congenital or acquired diseases and overcome limitations of current therapeutic approaches by integrating various technologies that range from tissue engineering to gene editing. For a mature couple, the birth of a normal fetus will be the end point of wealth as their reproduction system duties. Hormonal, structural and anatomical simulation, very close to normal tissues and physiology is the aim of regenerative medicine for both male and female reproductive systems. Artificial organs such as artificial ovum, sperm, gonads, genital tracts and uterus are under the study and could make a bright forthcoming therapy for human reproduction problems soon. We will review the last progresses in tissue engineering as well as cell therapy, nanotechnology and gene therapy for reproductive medicine. K-45 Psychosexual interventions in couples infertility Raisi F. Department of Psychiatry, Roozbeh Hosoital, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran. Email: raisi_f@yahoo.com The infertility is a life event which frequently represents an important stressor on the couple’s self-esteem, sexual identity and sexual life in general. It is common for infertile couples to experience problems in sexual enjoyment. Not only, sexual difficulties are common amongst infertile couples, also infertility may be a consequence of earlier sexual behavior. In addition, during treatment, the act of procreation is separated into different steps which may lead to sexual dysfunctions. So, it is necessary to help couples with sexual difficulties in the context of the infertility experience and infertility treatment. Interventions have to be tailored to the individual’s needs during the treatment process and include stimulation techniques, drug treatment, and targeted sex therapy. Sexual therapy in the context of infertility treatment is a focused approaches including: cognitive behavioral therapy, reducing anxiety by psychoeducation, this means that couples have to be informed about each step of the diagnostic and therapeutic process and to anticipate the possible impact on sexual function of both partners. It is a common clinical impression that when stress, which might be associated with a sexual problem, declines, conception occurs. Therefore, one might expect to find conception occurring in some couples when their general sexual relationship improves. K-46 Evaluation and management of erectile dysfunction Salehi P. Andrology Research Center, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Email: dr_p_salehi@yahoo.com Erectile dysfunction (ED) is defined as the inability to attain and/or maintain penile erection sufficient for satisfactory sexual performance. As the most thoroughly studied sexual dysfunction in the context of epidemiologic research, ED is estimated to carry an overall adult male (> 20 yr) prevalence rate of 10-20% worldwide, with the majority of studies reporting a rate closer to 20%. The subject of ED offers a veritable clinical barometer of overall male health status, and efforts geared toward advancing its management are immediately consequential for disease prevention, health promotion, and survival improvement. The presence of ED improves the sensitivity of screening asymptomatic cardiovascular disease in men with diabetes and increases the risk of cardiovascular disease, coronary artery disease, and stroke. Ongoing clinical and basic science investigation may further affirm the benefits of lifestyle modification and clarify its mechanistic basis. This class of medication was famously inaugurated as an effective ED treatment in the United States after the FDA approval of sildenafil citrate in 1998. In general, the agents effectively result in successful sexual intercourse rates of approximately 70%. Intracavernosal injection, transurethral therapy by alprostadil-MUSE, vacuum constriction device and penile prosthesis are the other options for ED treatment. K-47 PCOS and it’s different aspects in infertility and assisted reproductive technology Salehpour S. Department of Obstetrics and Gynecology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran. Email: saghar.salehpour2014@gmail.com Polycystic ovary syndrome (PCOS) affect 10-13% of women of reproductive age and it is the most common endocrine disorder of reproductive age. ASRM, ESHRE definition for PCOS is: oligo anovulation, clinical or biochemical hyperandrogenism, PCO in ultrasound. Rotterdam criteria describe 4 phenotypes in PCOS. Phenotype A: anovulation+hyperandrogenism+PCO in ultrasound (44.8%), phenotype B: hyperandrogenism+anovulation (14.9%), phenotype C: hyperandrogenism+PCO in ultrasound (16.2%), phenotype D: anovulation+PCO in ultrasound (19.5%). There are 2 clinical subtypes for PCOS: metabolic group: with higher body mass index, higher glucose and insulin (more frequent in phenotype A, B, C). Reproductive group: lower BMI, lower insulin, higher insulin like growth factor-1, higher lutenizing hormone, higher Sex hormone binding globulin (more frequent in phenotype D). According to 2023 PCOS guideline, anti-Müllerian hormone is considered as diagnostic criteria, but insulin resistance still not included in diagnostic criteria. Infertility treatment in PCOS: one of difficult area of infertility treatment is PCOS. And in recent decades there is different approaches to improve the results. Some of these approaches are summaries here: the first step in treatment is life style modification, induction ovulation with selective estrogen receptor modulator (Clomiphen citrate), aromatase inhibitor, and gonadotropins. In new literature, letrozole may become the first line of treatment, instead of clomiphen citrate. In vitro fertilization, intracytoplasmic sperm injection, in vitro maturation, laparascopic ovarian drilling are other options for infertility treatment. Metformin is suggested to reduce ovarian hyperstimulation syndrome, improve implantation and reduce miscarriage. But this drug is recommended in phenotype A, B, C. Other insulin sensitizer like myoinositol and D chiro inositol, also can be used to ameliorate insulin resistance and decrease androgen level, and finally improve the result of assisted reproductive technology cycles in PCOS. Vitamin D deficiency induce metabolic disorders and insulin resistance in PCOS and with vit D supplementation, we can have better result in infertility treatment of PCOS. Bariatric surgery is reserved for PCOS women who have BMI more than 35 kg/m2. In Shahid Beheshti University of Medical Sciences, Tehran, Iran, there was many researches on N-acetyl cysteine, metformin, myoinositol, chromium, L-carnitine as adjutant therapy in infertility treatment of PCOS patients. Complications of infertility treatment in PCOS: Clomiphene citrate resistance, more frequent in phenotype A, endometrial hyperplasia, more frequent in phenotype A, OHSS, more likely in phenotype A, Thick endometrium on the day of trigger, more prevalent in phenotype D. Pregnancy outcomes after ART in PCOS: lower live birth rate, higher rate of miscarriage, preterm birth (higher in phenotype A and D), higher rate of gestational diabetes mellitus, pregnancy induced hypertension, preterm birth in metabolic group of PCOS, in phenotype A and B, the quality of egg and embryo is lower and as a result the pregnancy rate will be lower. Some authorities suggest use of Glucagon-like peptide-1 agonists, like liraglutide, semaglutide and exenatide to improve the outcome of ART in PCOS. K-48 Revolutionizing phenotype prediction through data integration Salehzadeh-Yazdi A. School of Science, Constructor University, Bremen, Germany. Email: alisalehadeh@gmail.com The prediction of phenotypes from genotypic and environmental data has long been a cornerstone of biological research, with implications spanning medicine, agriculture, and evolutionary biology. However, traditional approaches often fall short in capturing the complexity of biological systems, where diverse data types -genomics, transcriptomics, epigenomics, proteomics, and environmental factors- interact in intricate and dynamic ways. This talk will explore how integrative data approaches are transforming phenotype prediction by leveraging advancements in multi-omics technologies, machine learning, and systems biology. By combining disparate datasets into unified analytical frameworks, we can uncover novel insights into genotype-phenotype relationships, enhance predictive accuracy, and address challenges such as data heterogeneity and missing information. I will highlight recent breakthroughs in integrating and analyzing complex datasets. Case studies will demonstrate how these approaches are being applied to predict phenotypic traits, uncover disease mechanisms, and advance precision medicine, showcasing the transformative potential of data integration across diverse biological contexts. Finally, I will discuss the challenges and opportunities ahead, emphasizing the importance of interdisciplinary collaboration and addressing the ethical considerations of predictive technologies. This presentation aims to inspire researchers to rethink phenotype prediction as a holistic, data-driven endeavor, with the potential to revolutionize our understanding of biology and its real-world applications. K-49 The impacts of abnormal sperm parameters and chromatin/DNA integrity on recurrent spontaneous abortion Talebi AR1, 2. Research and Clinical Center for Infertility, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Andrology Research Center, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Email: prof_talebi@ssu.ac.ir; prof_talebi@hotmail.com The importances of sperm DNA integrity in almost all stages of reproduction have been shown in many studies. Sperm DNA damage is associated with diminished semen quality, fertilization rates, cleavage rates, embryo quality and pregnancy loss. DNA of sperm contributes to half of the embryo genomic material; therefor any abnormalities of chromatin/DNA can lead to failures in the reproductive process. Although, the apoptosis is considered as the main cause of DNA strand breaks in human spermatozoa, but DNA fragmentation in mature spermatozoa has other origins beside apoptosis. Abnormal chromatin packaging during spermiogenesis and oxidative stress are also considered as the other sources of sperm DNA damage. Although, recurrent spontaneous abortions (RSA) may be associated with anatomical, genetic, endocrine, psychological, thrombotic, infectious and immunological causes, more than half of the cases remain unexplained, even following extensive evaluations. Recently, it is supposed that recurrent pregnancy loss may have a "paternal effect". The pathogenesis of RSA is multi-factorial, complex and poorly understood. In our previous studies, we showed that in the cases of RSA, slow motility and count had a significant reduction in comparison with controls and also spermatozoa of men from RSA group had less chromatin condensation and poorer DNA integrity than spermatozoa that obtained from fertile men with no history of RSA. In fact, in addition to abnormal sperm parameters, we have a high percentage of spermatozoa with protamine deficiency and apoptosis and these 2 anomalies may consider as important causes of idiopathic recurrent abortions. In conclusion, sperm chromatin integrity, in addition to sperm parameters is associated with reproductive outcome in RSA patients and the sperm chromatin/DNA integrity is a useful predictor for future abortions. So, it seems that sperm chromatin and DNA examinations are new tools in the process of RSA treatments. K-50 Psychiatric nursing interventions in infertility Tavangar H. Department of Nursing Education, Research Center for Nursing and Midwifery Care, Non-Communicable Diseases Research Institute, School of Nursing and Midwifery, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Email: tavangar11@yahoo.com Infertility is a widespread and complex challenge in the field of reproductive health that affects approximately 10-15% of couples of childbearing age and can have serious psychological and emotional consequences for both partners. This article examines the role of psychiatric interventions, particularly the role of nurses in supporting infertile couples, and emphasizes that these interventions can enhance mental health and quality of life. There is a crucial role in educating couples about fertility processes, treatment options, and potential side effects. This information can reduce anxiety and stress caused by the unknown. Pain relief and physical symptoms: nurses can assist in reducing physical pain resulting from fertility treatments or related tests by using various techniques, including relaxation and counseling. Emotional and psychological support: nurses can act as a supportive resource for couples by listening to their concerns and feelings, providing a safe space for emotional expression. Establishing support groups: nurses can organize support groups for infertile couples, allowing them to share their experiences with others in similar situations. Guidance in using coping techniques: nurses can teach couples coping skills such as relaxation techniques, deep breathing, and meditation to help manage stress and improve their quality of life. Managing expectations: nurses play an important role in assisting couples to have realistic expectations about fertility treatments and understanding the various stages involved. Research results indicate that psychiatric interventions, especially considering the key role of nurses, can lead to a reduction in symptoms of depression and anxiety and improve the overall quality of life for infertile couples. This article emphasizes the importance of psychiatric services in treatment centers and the need to address the psychological needs of infertile couples so they can cope with this significant challenge more effectively. K-51 Male factors in recurrent implantation failure Vahidi S1, 2. Andrology Research Center, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Research and Clinical Center for Infertility, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Email: vahidi.seraj@gmail.com The role of the male factor in miscarriage has been considered since the 1970s, and with assisted reproductive techniques, the role of the male factor in recurrent implantation failure (RIF) has also been considered. Studies indicate that male factors may contribute to 30-40% of RIF and recurrent pregnancy loss cases. As research continues, understanding the interaction between male fertility and implantation success will become increasingly critical to developing targeted treatments and improving outcomes for couples experiencing RIF. Therefore, due to the importance of this issue, we try to discuss the role of the male factor in RIF from various biological and genetic perspectives. K-52 More than survival; trends in fertility preservation, legal implications, and ethical issues Vatanparast M. Molecular Medicine Research Center, Research Institute of Basic Medical Sciences, Rafsanjan University of Medical Sciences, Rafsanjan, Iran. Email: mahboob_vatan@yahoo.com Modern advancements in fertility preservation have significantly enhanced the quality of life for cancer patients by offering various effective strategies. Among these, cryopreservation has emerged as a cornerstone technique over the past decade. This method involves retrieving and freezing oocytes or embryos prior to initiating oncological treatments, ensuring the possibility of future biological parenthood. Additionally, the use of gonadotropin-releasing hormoneagonists and antagonists has further refined fertility preservation by safeguarding ovarian function during chemotherapy. These approaches underscore the importance of integrating fertility preservation into cancer care to address the reproductive needs of patients while maintaining their long-term quality of life. Ovarian tissue cryopreservation (OTC) has traditionally been associated with fertility preservation in cancer patients; however, various alternative methods exist for safeguarding fertility. The appropriate strategy for fertility preservation should be tailored based on factors such as the type and timing of chemotherapy, the specific cancer diagnosis, the patient’s age, and whether they have a partner. For patients with a partner or those willing to use donor sperm, embryo cryopreservation is often the preferred initial option due to its established clinical efficacy. In cases where ovarian stimulation is feasible and the patient is single, oocyte cryopreservation may be favored over ovarian tissue banking, despite generally lower pregnancy rates. OTC presents a vital fertility preservation strategy, especially for prepubescent girls and adolescent cancer patients, but also introduces a spectrum of ethical, legal, and social considerations. A key ethical challenge for younger girls lies in their limited capacity for autonomous decision-making, necessitating parental or guardian consent, which raises questions regarding the alignment of these decisions with the child's best interests and future reproductive autonomy. For adolescents, the ethical landscape is more nuanced, as they participate in decision-making but may not fully grasp the long-term implications of their choice. OTC involves a surgical procedure with inherent general and specific risks. Despite its prior classification, current evidence and guidelines recognize OTC as a clinically established component of fertility preservation. Unequal access to OTC, often contingent on socioeconomic status, raises concerns about disparities in healthcare and reproductive rights. Legally, the evolving recognition of OTC necessitates clarity. While live births from cryopreserved ovarian tissue are increasing, the previous non-standard classification may confuse, potentially leading to legal complexities for patients and healthcare providers. Clear legal frameworks are essential to support informed consent and protect the rights of individuals undergoing OTC. Integrating fertility preservation into cancer care is crucial for enhancing the quality of life among survivors. Nonetheless, it is neither feasible nor ethical to apply a uniform approach to all cancer patients regarding fertility preservation strategies. K-53 Vaginoscopy gateway to uterus Wahaaj MH. Afghanistan Branch, Ian Donald and Thomas Jefferson Ultrasound Division, Kabul, Afghanistan. Wahaaj Hospital, Kabul, Afghanistan. Email: wahaajhospital@yahoo.com To enter uterine cavity by hysteroscopy several methods are used. Some people are using medicine to soften or dilated the cervical canal or external os, while some do dilatation and then insert the scope. All these techniques have their own effects and side effects and some times they are not successful. Vaginoscopy using high pressure hysteron jet unit is the best technique to enter the uterus. Not only it is the best technique for entering the uterine cavity, it can provide information about the vaginal canal and cervical canal pathology as well. K-54 Regenerative medicine: The next generation of infertility treatment Yaeghoobi M. School of Medicine, Shahroud University of Medical Sciences, Shahroud, Iran. Science and Technology Park, Yazd, Iran. Email: m.yaeghoobi@gmail.com Infertility is a primary health issue affecting about 15% of couples of reproductive ages worldwide, leading to physical, mental, and social challenges. While infertility does not threaten individual lives, its impact can be felt in all areas of personal and social life. Infertility can lead to psychological challenges such as depression and anxiety and negatively impact relationships and social life. Health issues in the male and female reproductive systems, which can arise from illnesses, injuries, or treatments like those for cancer, may result in infertility. Currently, regenerative medicine and the use of scaffolds have been offered as promising approaches to treating these abnormalities. These methods are considered innovative and effective solutions, especially for young couples facing infertility. Regenerative medicine is characterized as the process of replenishing or restoring human cells, tissues, or organs to restore or reestablish normal function. It seeks to replace tissue or organs that have been damaged by age, disease, trauma, or congenital issues, vs. the current clinical strategy that focuses primarily on treating the symptoms. The tools used to realize these outcomes are tissue engineering, cellular therapies, and medical devices and artificial organs. Combinations of these approaches can amplify our natural healing process in the places it is needed most, or take over the function of a permanently damaged organ. Regenerative medicine is a field that brings together experts in biology, chemistry, computer science, engineering, genetics, medicine, robotics, and other fields to find solutions to some of the most challenging medical problems faced by humankind. K-55 Psychobiology of infertility Yassini Ardekani SM. Department of Psychology, Research Center of Addiction and Behavioral Sciences, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Email: smya1960@gmail.com Under stress, any organism activate a complex range of responses involving the endocrine, nervous and immune systems, collectively known as the stress response. In chronic stress condition, the sympathetic hyperactivity, could increase the risk of conditions such as obesity, cancer, depression, infertility and etc. The presence of psychological distress has been recognized to be the cause of several disorders in reproductive life, including amenorrhea, oligomenorrhea, and the premenstrual syndrome. In response to stress, enhanced secretion of hormones, such as corticotropin-releasing hormone, glucocorticosteroids, catecholamines, as well as prolactin are observed. The stress-related activation of the HPA affects the hypothalamic-pituitary-gonadal axis by restraining the release of gonadotropin releasing hormone from hypothalamus and inhibiting the secretion of luteinizing hormone from the pituitary, as well as the release of estradiol and progesterone from the ovaries. High levels of circulating stress hormones can interfere with the timing of ovulation and shorten the luteal phase. Additionally, the changed levels of hormones observed during stress could directly influence the quality of egg cells, thickness of the endometrial layer or other structures engaged in the reproductive process. Stress could also cause infertility by affecting gamete transport and delaying or inhibiting the luteinizing hormone surge of the menstrual cycle resulting in an increased risk of anovulation. K-56 Application of cytogenetic tests in infertility and subfertility Behjati F1, 2. University of Social Welfare and Rehabilitation Sciences, Tehran, Iran. Pasdaran Medical Genetics Laboratory, Tehran, Iran. Email: fbehjati@gmail.com; f_behjati@uswr.ac.ir In this talk I will present various cytogenetic techniques and present our data, emphasizing the relevance of the findings in the management of the patients. Infertility is certainly common, affecting about 15% of couples. One in seven couples experiences infertility or subfertility. Genetic factors could be present in 10% of female and 15% of male infertility. Y-chromosome microdeletions and related disorders; autosomal and X-chromosome defects, as well as mutations causing severe defects in sperm morphology are among genetic causes of male infertility. Sex chromosomal defects include XXY and XXY/XY in the male, typically presenting with azoospermia and occasionally severe oligospermia, and Turner syndrome and its variants, and autosomal chromosome abnormalities are infrequently seen as a cause of infertility. The reciprocal translocation (especially when an acrocentric is involved) and the inversion may be associated, though infrequently, with severe hypo spermatogenesis and moderate to severe oligospermia. Robertsonian translocations are occasionally associated with infertility in the male or, less often, the female. Translocation between a sex chromosome and an autosome is a rarely identified cause of infertility. Fertility in the 46, XX female begins to fall in the mid-thirties, paralleling both the increase in risk for trisomy and an increasing failure in in vitro fertilization implantation from this age. Various sex chromosomal abnormal states, mostly mosaic and containing a 45, X cell line, account for, or are at least associated with, a number of cases of female infertility; autosomal abnormalities are less frequent. There is a particular association of premature ovarian failure with the fragile X permutation heterozygote. Secondary infertility may be due to premature ovarian failure. Presence of chromosomal abnormalities such as Xq isochromosome, Turner syndrome mosaicism (45, X/46, XX), an X-Y translocation, and an X-autosome translocation have been reported in such cases. Couples experiencing 3 miscarriages require usual gynecological investigations and a chromosome analysis. 5-6% of couples with recurrent abortions can have a balanced translocation or an inversion. Karyotyping should be done routinely in men with azoospermia and oligospermia. Yq microdeletions should be checked for in men with nonobstructive azoospermia and severe oligospermia, but this is unlikely to be the cause in lesser degrees of oligospermia. Karyotyping should be routine in women presenting with primary ovarian dysfunction. Diagnosis and genetic counselling should always be part of an extensive evaluation of patients with infertility and subfertility, and basic clinical analysis should precede any genetic analysis. K-57 Modern diagnostic techniques in prenatal genetics Dehghani MR1, 2. Department of Medical Genetics, Faculty of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Abortion Research Center, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Email: dehghani.dr@gmail.com The field of prenatal genetics has undergone profound transformation over the past few decades, evolving from basic cytogenetic evaluations to advanced molecular diagnostics that offer higher resolution, improved sensitivity, and more comprehensive insights into fetal genetic conditions. Initially, fluorescence in situ hybridization and comparative genomic hybridization (CGH) were widely used for the detection of aneuploidies and large chromosomal rearrangements. While these techniques established the foundation for genetic screening, they were inherently limited by low resolution, labor intensity, and the requirement for prior knowledge of target regions. Advancements in microarray-based technologies, including array CGH (aCGH) and single nucleotide polymorphism arrays, marked a significant shift in diagnostic capability. aCGH allows the detection of submicroscopic deletions and duplications with a resolution down to 50-100 kilobases. single nucleotide polymorphism arrays further provide insights into regions of homozygosity, uniparental disomy, and some cases of mosaicism, although they can be affected by maternal cell contamination and may miss balanced rearrangements. These microarray-based methods greatly increased the diagnostic yield in pregnancies with fetal anomalies detected via ultrasound. With the rise of high-throughput sequencing technologies, next-generation sequencing has emerged as a powerful tool in prenatal diagnosis. Whole exome sequencing focuses on protein-coding regions, which represent only 1-2% of the genome but harbor approximately 85% of known pathogenic mutations. Whole exome sequencing has proven especially useful in identifying causative variants in fetuses with structural anomalies. Whole genome sequencing offers even broader coverage, including non-coding regions, structural variants, and deep intronic mutations, though it presents challenges related to cost, data interpretation, and ethical issues surrounding incidental findings. Simultaneously, non-invasive prenatal testing (NIPT) has revolutionized screening by allowing analysis of cell-free fetal DNA from maternal blood. Initially applied to detect common aneuploidies such as trisomy 21, 18, and 13, NIPT has expanded to include screening for sex chromosome aneuploidies, microdeletions, and even some monogenic disorders. Despite its high sensitivity and specificity, NIPT remains a screening tool and must be confirmed with invasive diagnostic procedures due to potential false positives and negatives, particularly in cases of confined placental mosaicism. In conclusion, modern prenatal genetic diagnostics encompass a wide range of technologies, each with distinct advantages and limitations. The choice of method should be guided by clinical indications, the nature of suspected anomalies, turnaround time, cost, and the level of diagnostic resolution required. Looking ahead, the integration of multi-omics approaches -including transcriptomics, epigenomics, and proteomics- with advanced bioinformatics and machine learning is expected to refine variant interpretation and personalize prenatal care. Furthermore, expanding access to these technologies globally will be essential in ensuring equity in prenatal genetic services. K-58 The psychological and economic importance of genetic counseling in reproductive problems Ghasemi N. Abortion Research Centre, Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Email: Nghasemi479@gmail.com Genetic counseling stands at the intersection of science, psychology, and economics, playing a pivotal role in the management of reproductive problems. Psychologically, genetic counseling empowers individuals and families by enhancing understanding, reducing anxiety, and fostering informed decision-making in the face of complex genetic information. Studies show that counseling significantly improves empowerment and perceived personal control, while reducing anxiety for many counselees. It also addresses the emotional challenges of coping with genetic risks, grief, and family dynamics, while promoting resilience and effective communication within families. Economically, genetic counseling is a cost-effective intervention that helps optimize healthcare resource allocation. By clarifying risks and guiding appropriate testing and interventions, it can prevent unnecessary procedures and reduce long-term healthcare costs. Economic evaluations, such as cost-effectiveness and cost-benefit analyses, demonstrate that genetic counseling supports informed, efficient use of limited healthcare budgets and can prevent costly outcomes associated with undiagnosed or mismanaged genetic conditions. In summary, genetic counseling in reproductive health not only alleviates psychological burdens but also delivers measurable economic value, making it an essential component of modern reproductive medicine. K-59 Life style tests and usage as personalized treatment Houshmand M1, 2. Department of Medical Genetics, National Institute of Genetic Engineering and Biotechnology (NIGEB), Tehran, Iran. Houshmand Genetic Lab, Gothenburg, Sweden. Email: massoudh@nigeb@gmail.com Infertility is a complex condition that affects a significant portion of the global population, with both male and female factors contributing to reproductive challenges. Traditional infertility treatments, while effective for many, often follow a generalized approach, which may not address the unique genetic factors underlying a couple’s fertility issues. This study explores the potential of personalized infertility treatment by integrating genetic profiling of both males and females to tailor interventions for optimal outcomes. By analyzing specific genetic markers related to reproductive health, such as those associated with ovulation, sperm quality, and hormonal regulation, the approach seeks to identify individualized treatment plans. Furthermore, genetic profiling can provide insights into underlying conditions such as polycystic ovary syndrome, endometriosis, male factor infertility, and genetic mutations that may affect fertility or pregnancy outcomes. The goal of personalized infertility treatment is to move beyond one-size-fits-all therapies, offering couples more effective, targeted, and scientifically-backed options. Ultimately, this approach aims to improve the success rates of assisted reproductive technologies, reduce trial-and-error in treatment, and enhance the emotional and physical wellbeing of individuals undergoing fertility treatment. K-60 Pharmacogenetics and personalized drug therapy in infertility treatment Jorjani M. Department of Pharmacology, School of Medicine, Shahid Beheshti University of Medical Sciences Tehran, Iran. Email: msjorjani@yahoo.com; msjorjani@sbmu.ac.ir Infertility affects a significant proportion of couples worldwide, with many cases attributed to genetic factors influencing gametogenesis and hormonal regulation. Conventional infertility treatments, such as assisted reproductive technologies and hormonal therapies, often follow a standardized approach, leading to variable success rates and adverse effects. Pharmacogenetics, the study of how genetic variations influence drug response is a promising approach for personalized drug therapy in infertility management by tailoring drug therapies based on an individual’s genetic profile. This strategy helps clinicians to optimize drug efficacy, minimize side effects, and improve reproductive outcomes. Key genetic polymorphisms affecting drug metabolism and hormonal pathways have been identified via pharmacogenetic research. The variability in response to controlled ovarian hyperstimulation appears to be related to polymorphisms in genes involved in folliculogenesis and hormone metabolism, such as the follicle-stimulating hormone receptor (FSHR). Alteration of FSHR sensitivity by specific single nucleotide polymorphisms affects the efficacy of exogenous FSH. Therefore, Women with specific FSHR variants may require the most suitable medications or adjusted gonadotropin doses to achieve optimal follicular development, highlighting the need for genotype-guided dosing. Similarly, MTHFR gene mutations affect folate metabolism, which is critical for embryo development and may influence the success of infertility treatments. Polymorphism and variations in genes encoding cytochrome P450 enzymes alter the pharmacokinetics of drugs used for ovulation induction or successful implantation such as clomiphene citrate, gonadotropins, progesterone, metformin and aromatase inhibitors. MTHFR gene mutations affect folate metabolism, which is critical for embryo development and may influence the success of infertility treatments. Emerging pharmacogenomics testing can mitigate risks such as poor ovarian response, ovarian hyperstimulation syndrome, or cycle cancellation and provide actionable recommendations based on genetic profiling, paving the way for precision medicine and personalized drug therapy in reproductive endocrinology. As research expands, integrating genetic testing into routine in vitro fertilizattion practice could enhance success rates, reduce complications, and offer cost-effective solutions. Advances in next-generation sequencing and bioinformatics are accelerating the integration of pharmacogenetics in this field. Future directions include polygenic risk scoring for predicting treatment response and artificial intelligence-driven algorithms for dynamic dose adjustments. K-61 The management of male infertility based on the genetic bases Kalantar SM. Abortion Research Center, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Email: smkalantar@yahoo.com Infertility is a global health problem with a prevalence of 10-15%. Although male and female can be responsible for this problem due to their inability to conceive, male infertility is of particular importance. Despite the advance treatments available nearly half a century after the birth of Louise Brown, with the introduction of treatment methods for male infertility, especially those with spermatogenesis disorders, the likelihood that this cause will vary from person to person. Therefore, the decision on the type of treatment will also depend on the individual situation, in such cases, considering the role of genetics in the different stages of spermatogenesis, this panel will attempt to discuss and exchange relevant aspects. These aspects as unexplained chromosomal translocation, life style, new variants and whole exome sequencing, spontaneous rescue in chromosomal, non-syndromic of male infertility and preimplantation genetic diagnosis will be shared by speakers. K-62 Genetic evaluation of patients with non-syndromic male infertility Kordi Tamandani D1, 2, Ghasemi M3, Jabari A4. Department of Biology, University of Sistan and Baluchestan, Zahedan, Iran. Medical Genetic Lab, University of Sistan and Baluchestan, Zahedan, Iran. Department of Obstetrics and Gynaecology, Faculty of Medicine, Pregnancy Health Research Center, Zahedan University of Medical Sciences, Zahedan, Iran. Department of Obstetrics and Gynecology, Molud Infertility Center, Zahedan University of Medical Sciences, Zahedan, Iran. Email: dor_kordi@yahoo.com Infertility is a common health condition, affecting nearly 7% of all couples. Clinically, over 2 thousand genes are involved in human spermatogenesis. Therefore, analyzing a large number of genes that may contribute to male infertility is crucial. It is estimated that genetic defects account for nearly 50% of infertility cases. The family-based whole exome sequencing approach can accurately detect novel variants. However, selecting an appropriate sample for data generation using whole exome sequencing has proven challenging in familial male infertility studies. The aim of this study was to identify types of pathogenic male infertility in cases of familial azoospermia. K-63 New genetic candidate variants identified by whole genome sequencing in infertile men Malcher A1, Ibrahim R1, Olszewska M1, Pastuszak K2, 3, 4, Stokowy T5, Bauer H6, Jedrzejczak P7, 8, Berger A7, Yatsenko AN9, Kurpisz M1. Institute of Human Genetics, Polish Academy of Sciences, Poznan, Poland. Department of Algorithms and System Modelling, Gdansk University of Technology, Gdansk, Poland. Department of Translational Oncology, Medical University of Gdansk, Gdansk, Poland. Centre of Biostatistics and Bioinformatics, Medical University of Gdansk, Gdansk, Poland. IT Division, University of Bergen, Bergen, Norway. Center of Obstetrics, Gynecology and Infertility Treatment- Pastelova Clinic, Poznan, Poland. Chair and Department of Cell Biology, Poznan University of Medical Sciences, Poznan, Poland. Department of OB/GYN and Reproductive Sciences, School of Medicine, University of Pittsburgh, Pittsburgh, USA. Email: agnieszka.malcher@igcz.poznan.pl In recent years, several papers have been published regarding identified genetic variants in men with nonobstructive azoospermia using the whole exome sequencing (WES). However, the WES provides a genetic diagnosis in only 25-50% of individuals on the other hand, literature shows that application of whole genome sequencing (WGS) to samples previously screened with WES may provide a conclusive cause in 42%. Although WES improved significantly in the last years, it is outperformed by WGS in terms of genomic coverage. Here, we used the WGS to detect potential causative variants in patients with nonobstructive azoospermia (n = 39) including also samples of which mutations in WES were not found (n = 6). We followed the same approach of the whole-genome sequencing to identify novel potential biomarkers for infertile men from consanguineous families (n = 10). WGS using Illumina HiSeq X was performed to detect NOA-associated gene candidates. Variants were annotated using the ensembl variant effect predictor, utilizing frequencies from gnomAD and other databases to provide clinically relevant information (ClinVar), conservation scores (phyloP), and effect predictions (i.e., MutationTaster). Structural protein modeling was also performed. Using WGS, we revealed potential NOA-associated single nucleotide variant, such as: TKTL1, IGSF1, ZFPM2, VCX3A (novel disease causing variants), ESX1, TEX13A, FAM47C (previously known genes associated with infertility) and BEND2, BRWD3, MAGEB6, MAP3K15, RBMXL3, and SSX3 genes, which may be involved in spermatogenesis. This work was supported by the National Science Centre in Poland, Grant No. 2017/26/D/NZ5/00789 (to AM) and No. 2020/37/B/NZ5/00549 (to MK) K-64 Innovative therapeutic approaches in infertility treatment Mojarrad M1, 2, 3. Department of Medical Genetics and Molecular Medicine, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran. Medical Genetics Research Center, Mashhad University of Medical Sciences, Mashhad, Iran. Genetic Center of Khorasan Razavi, Mashhad, Iran. Email: mojaradm@mums.ac.ir In recent years, innovative therapeutic methods such as cell therapy, exosome therapy, and gene therapy have revolutionized various areas of medicine. These technologies have enabled the management and even treatment of challenging medical disorders, including thalassemia, cerebral palsy, genetic dwarfisms, and amyotrophic lateral sclerosis. For instance, the use of CRISPR based manipulation of patient derived hematopoietic stem cells has shown considerable success in treating thalassemia, completely addresses the need for regular blood transfusions. Similarly, cell therapy targeting neural repair has provided new hope for patients with cerebral palsy, improving motor functions and overall quality of life. These advancements provide significant hope in addressing infertility and recurrent miscarriage issues. The use of stem cells for rejuvenating and restoring ovarian function to enhance ovarian reserve has entered the clinical realm. Studies have demonstrated that autologous stem cell ovarian transplantation enhances antral follicle count and anti-Müllerian hormone levels by stimulating the activation of dormant follicles in young women diagnosed with diminished ovarian reserve. Notably, clinical trials have reported successful pregnancies resulting from this breakthrough approach. Moreover, gene therapy methods aimed at restoring spermatogenesis in genetic disorders have shown exciting progress in preclinical phases. Recent evidence has indicated that editing specific genes related to spermatogenesis can enhance sperm production and motility, providing new avenues for treatment in men with genetic causes of infertility. In addition, remarkable advances in gene therapy have opened new possibilities for pre-implantation treatments of genetic diseases. Techniques such as preimplantation genetic testing combined with gene editing allow for the selection of genetically healthy embryos, significantly reducing the risk of inherited disorders. In this presentation, we will introduce the advancements and achievements in this field and explore the horizons opened in the treatment of infertility and recurrent miscarriage through these novel therapeutic approaches. By showcasing specific examples and ongoing clinical trials, we aim to illustrate the transformative potential of these innovative therapies in enhancing reproductive health and outcomes for individuals facing infertility challenges. K-65 Bioinformatic analysis of the transcriptome in premature ovarian insufficiency: Insight for drug targeting Montazeri F. Abortion Research Center, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Email: marjan.montazeri@gmail.com Background: Premature ovarian insufficiency is a multifactorial condition that leads to early loss of ovarian function before the age of 40. It can be caused by a variety of genetic, environmental, and idiopathic factors. The role of intercellular communication within the ovarian follicle, particularly between cumulus and granulosa cells, has recently gained attention as a possible contributor to the progression of this disorder. Objective: This study aimed to investigate transcriptomic changes in cumulus and granulosa cells of women with premature ovarian insufficiency using bioinformatic analysis, with a specific focus on disrupted paracrine signaling and its potential as a therapeutic target. Materials and Methods: Raw data (RNA_seq) from the GSE267641 (cumulus cells) and GSE201276 (granulosa cells) collections were extracted from the GEO database. Data processing was performed to identify differentially expressed genes between premature ovarian insufficiency patients and controls using R (4.4.2) and the DESeq2 package. In addition, pathway enrichment and molecular interaction analysis were performed to identify processes related to ovarian function and communication between follicular cells. Gene expression correlations were also evaluated and genes with potential drug targets were identified. Results: Analysis of (RNA_seq) data led to the identification of genes with significant changes in POI patients that are involved in pathways related to follicular growth and development, growth factor signaling, and hormonal regulation. Investigation of intercellular interactions showed that paracrine communication between granulosa and cumulus cells is disrupted in POI patients. Especially in signaling pathways related to growth factors and regulation of the follicular microenvironment. Correlation analysis of gene expression showed that some key genes in these regulatory networks are correlated with each other, which may play an important role in ovarian function. In addition, genes (PLK1, TOP2A, AURKB, BUB1, NOS2, PBK, RAD54L, CYP19A1, FSHR, FOS, EGR2, DUSP6, FGF7, NR4A1) were identified as potential drug targets that can be considered in the development of new treatments for POI. Conclusion: The findings of this study indicate that changes in gene expression in cumulus and granulosa cells can affect the paracrine communication of these cells and play a role in the pathophysiology of POI. In addition, identifying gene expression correlations and potential drug targets can provide new ways to understand the molecular mechanisms of this disease and develop novel treatments. K-66 Impact of genetic counselling on molar pregnancy Nikuei P1, 2, Firoozy H3, Tabasi Sh4, Alavi K5. Medical Genetic Counselling Center, Social Welfare Organization, Bandar Abbas, Iran. Dr. Nikuei Medical Genetic Counselling Center, Bandar Abbas, Iran. Shiraz University of Medical Sciences, Shiraz, Iran. Student Research Committee, Hormozgan University of Medical Sciences, Bandar Abbas, Iran. Department of Science and Technology, Science and Research Branch, Islamic Azad University, Tehran, Iran. Email: poonehnikuei@gmail.com A human pregnancy anomaly known as a hydatidiform mole (HM) is known by faulty embryonic development and excessive trophoblast proliferation. HM can be classified as partial (PHM) or complete (CHM) at the histopathological level. The majority of CHM cases are diploid, lack fetal tissue, and have very high serum beta-human chorionic gonadotrophin levels. The presence of ≥2 molar pregnancies iad Universirty, a single patient is known as recurrent HM, or RHMs. The patient is 37 yr old with six pathologically proven HM. She had been married to a first-degree relative. Her sister had a history of 4 moles. There wasn’t a history of consanguinity between her parents. Whole exome sequencing was carried out to identify any potential genetic causes. A new homozygous missense mutation in the NLRP7 gene (NM_001127255:exon8:c.G2585A:p.G862E) was reported using next-generation sequencing data. Since this mutation has never been reported in any other public variant database, it is categorized as a variation of unknown significance. Sanger sequencing was carried out and showed homozygous mutation in the patient and her sister with RHMs. Ovum donation appears to be the best management choice for these patients to have normal pregnancies because there is currently no medication for RHM. K-67 Embedding genetic counselling and next generation sequencing in evaluation of infertility and recurrent miscarriage Seyedhassani SM. Seyedhassani Genetic Center, Yazd, Iran. Email: seyedhassani@yahoo.com Infertility and recurrent miscarriage affect millions globally, many of cases remain unexplained despite conventional testing. Integrating next-generation sequencing (NGS) with structured genetic counselling offers a transformative approach to diagnosis and care. While NGS enables detection of subtle genetic disorders, genetic counselling ensures patients understand complex results, reproductive risks, and management options. Our clinic implemented a structured workflow combining genetic counselling and NGS, informed by foundational research: 1) pre-test counselling: couples underwent sessions to review medical history, inheritance patterns, and testing implications, aligning with guidelines emphasizing multidisciplinary care. 2) NGS testing: whole exome sequencing was done using the Illumina platform and Agilent SureSelect V7 library preparation kit. 3) post-test counselling: results were interpreted alongside family planning goals, discussing options like preimplantation genetic testing, and a strategy shown to improve outcomes. The case has been referred with 2 spontaneous abortions. In past history, there were 2 infantile deaths due to gastrointestinal infection and tuberculosis respectively. whole exome sequencing was done, and finally a likely pathogenic mutation in JAK3 as c. 1275T>A was detected and confirmed in couple. This mutation was lead to severe combined immunodeficiency in autosomal recessive inheritance. Embedding genetic counselling with NGS improves diagnostic yield by 40-60% in unexplained infertility/recurrent miscarriage cases. This dual approach addresses both the biological and psychosocial dimensions of reproductive failure, empowering couples with actionable insights and personalized pathways to parenthood. Counselling ensured informed decision-making, reducing anxiety and enhancing adherence to treatment plans, consistent with psychosocial support frameworks. K-68 Azoospermia in male infertility associated with unexplained chromosomal translocation Salehi P. Andrology Research Center, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Email: dr_p_salehi@yahoo.com Azoospermia, or the absence of sperm in the semen sample, is one of the critical defects in infertile men. Various reasons cause azoospermia, with genetic factors being the most important. Chromosomal translocations occur due to a shift between unpaired chromosomes. This disorder occurs when a chromosome breaks and pieces of it attach to another chromosome. Various studies have shown that the presence of translocases plays a role in azoospermia. Depending on the breakpoints, approximately 60% of the carriers of autosomal translocations have at least one abnormal parameter in their semen analysis. Although the frequency of sex chromosome translocations is rare, some reports have shown an association between Y chromosome translocations and azoospermia. Robertsonian translocation is the most common form of unbalanced chromosomal translocation in humans and is also the common cause of male infertility. Also, it shows chromosome 1q21 translocation leads to azoospermia in men. Studies also show that translocation in chromosome number 6 leads to azoospermia in men. Studies have also reported the presence of translocations in chromosomes 5 and 10, which also lead to azoospermia. It seems that the presence of genetic translocations plays an important role in causing defects leading to male infertility, especially azoospermia. Therefore, it is recommended that appropriate measurement and diagnostic methods be developed to investigate these genetic defects. K-69 The principles of personalized medicine Sheikhha MH. Abortion Research Center, Reproductive Medicine Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Email: sheikhha@yahoo.com Personalized medicine known as a pillar of medical practice is took place at the beginning of the new millennium. It can be defined as a new medical approach that uses a patient’s genetic profile to guide decisions about disease prevention, diagnosis, and treatment. There are many goals related to personalized medicine including; combination of current medicine with advanced molecular techniques, targeting each patient individually to achieve the highest possible therapeutic effect, minimizing drugs side effects, study of molecular mechanisms of diseases, assessment of genetic risk and increasing the effectiveness of care. It is also involved in the areas of preventive medicine, oncogenomics, pharmacogenetics, cost-effectiveness, new disease taxonomy, medical decision support system, and population healthcare. Regarding reproductive medicine, we can use personalized medicine in prenatal diagnostics, including maternal blood diagnostics. Applying personalized medicine means that the physicians use advanced genetics diagnostic tests to determine which medical treatments will work best for each patient. In the other words, personalized medicine involves analyzing genome of individuals to understand how their genes influence their health, disease risk, and response to treatments. This usually involves genetic testing to identify variations in genes that may predispose someone to certain diseases or affect their response to medications. In recent years many factors help the increasing use of personalized medicine, among these factors we can name; artificial intelligence, improvements in bioinformatics methods, achievements of synthetic biology, and accessing the big data in the fields of genomics, proteomics and metabolomics. Recently, using whole-exome sequencing and sequencing of targeted genes were highly effective in determining the genetic variants which are very important in personalized medicine. While personalized medicine has made significant progress recently, several challenges must be addressed regarding the privacy and security of these data, access to expensive genetic testing, and potential discrimination based on genetic predispositions. K-70 Roles of soft markers in aneuploidy screening Zanbagh L. Department of Obstetrics and Gynecology, Afshar Hospital, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Email: javadkhataie@gmail.com For isolated soft marker the Society for Maternal-Fetal Medicine recommends not offering diagnostic testing solely for the indication of an isolated soft marker when prior cell-free DNA screening was negative. Some soft markers in euploid fetuses are associated with specific disorders or may warrant additional ultrasound evaluation/monitoring, which should be addressed during counseling. A false-negative cell-free DNA is unlikely but probably higher with these soft markers than with the normal variants described above. These soft markers on ultrasound include urinary tract dilation, single umbilical artery, echogenic bowel, thickened nuchal fold, absent nasal bone, and shortened humerus or femur. For ≥ 2 soft markers. We offer genetic counseling to discuss invasive diagnostic testing options. 2025 5 01 1 28 http://ijrm.ir/article-1-3697-en.pdf

217-3698 2026-10-15 10.1002

International Journal of Reproductive BioMedicine IJRM 2476-4108 2476-3772 10.29252/ijrm 2025 23 5 Akbari Javar A A-1 Low polyvinylpyrrolidone concentration improved sperm apoptotic gene expression, cytokinetic of embryo, and intracytoplasmic sperm injection outcomes: An RCT Akbari Javar A1, Aflatoonian B2, Talebi AR1, Dehghanpour F1, Khalili MA1, Montazeri F3. Research and Clinical Center for Infertility, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Stem Cell Biology Research Center, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Abortion Research Center, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Email: khalili59@hotmail.com Background: During the intracytoplasmic sperm injection (ICSI) procedure, 10% polyvinylpyrrolidone (PVP) is commonly used as a selection medium to decrease sperm motility. Objective: The study aimed to determine the effect of different concentrations of PVP (5% and 10%) on sperm apoptotic transcripts, sperm DNA fragmentation, embryo cytokinetic and clinical characteristics in the ICSI program. Materials and Methods: In this clinical trial study, 60 couples with male factor infertility underwent ICSI insemination using either 5% or 10% PVP concentration. Metaphase II oocytes were divided into 2 groups, with one group injected with spermin 5% PVP and the other in 10% PVP. After fertilization, the zygotes were cultured using a time-lapse microscope to assess morphokinetic parameters also, simultaneously with the ICSI procedure, sperm DNA fragmentation and apoptotic transcript levels were quantified using reverse transcription quantitative polymerase chain reaction. Results: DNA fragmentation (20.27 ± 4.94% vs. 25.93 ± 5.73%) were lower in spermatozoa from the 5% PVP compared to 10% PVP groups (p < 0.0001). Also, DNA fragmentation was significant between 0% PVP group with 5% PVP and 10% PVP (p = 0.00). The expression levels of both BCL2 and HSP70 genes increased significantly with experimental when compared to control group. The transcript level of the BAX gene was significantly lower in experimental sample. There were higher rates of fertilization (p = 0.049) and high-quality embryo formation in group 5% PVP (p = 0.03). All cytokinetic variables were significantly different between groups (p < 0.001). Also, the median time to complete second synchronous divisions (S2) was significantly higher in 10% PVP embryos. In addition, the rates of embryo fragmentation, uneven blastomere, reverse cleavage and embryo arrest were significantly higher in 10% PVP group. The biochemical and clinical pregnancies, and implantation success rates were insignificantly increased in 5% PVP compared to the 10% PVP. Conclusion: The study concluded that a low concentration of PVP (5%) is a suitable replacement for 10% PVP in ICSI cycles for male factor infertility. Keywords: Embryo cytokinetic, ICSI, Polyvinylpyrrolidone, Time-lapse. Registration ID in IRCT: IRCT20220725055550N1 The original full text of this abstract has been published: Akbari Javar A, Aflatoonian B, Talebi AR, Dehghanpour F, Khalili MA, Montazeri F. The beneficial role of low PVP concentration on sperm apoptotic gene expression, embryo morphokinetics status, and clinical ICSI outcomes. Andrologia 2024; 2024: 8803887. Doi: 10.1155/2024/8803887 A-2 The effects of Wharton’s jelly mesenchymal stem cells secretomes for restoring busulfan-induced reproductive toxicity in male mice Bahmyari S1, Alaee S1, 2, 3, Khodabandeh Z2, Talaei-Khozani T4, 5, Dara M2, Mehdinejadiani Sh1, Solati A1. Department of Reproductive Biology, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran. Stem Cells Technology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran. Infertility Research Center, Shiraz University of Medical Sciences, Shiraz, Iran. Histomorphometry and Stereology Research Center, Anatomy Department, Medical School, Shiraz University of Medical Sciences, Shiraz, Iran. Tissue Engineering Lab, Anatomy Department, Medical School, Shiraz University of Medical Sciences, Shiraz, Iran. Email: alaee.sanaz@gmail.com Background: Numerous studies have explored the use of mesenchymal stem cells (MSCs) in the treatment of spermatogenic disorders. Objective: Given the constraints associated with MSC applications, the current research aimed to compare the secretomes of Wharton’s jelly MSCs, including conditioned medium at 10-fold concentration (CM10), 20-fold concentration (CM20), and extracellular vesicles (EVs), to mitigate busulfan-induced reproductive damage in male mice. Materials and Methods: In this experimental study, 72 male BALB/c mice (8-9 wk, 29 ± 3 gr) were randomly divided into 9 groups (n = 8/group), including control, busulfan 1 month (1M), busulfan 2 months (2M), CM10, busulfan + CM10, CM20, busulfan + CM20, EVs, and busulfan + EVs. MSCs were isolated from Wharton’s jelly in this experimental study. MSCs were characterized through morphology assessment using light microscopy, and flow cytometry was used to evaluate MSCs surface markers. Moreover, adipogenic differentiation was verified by Oil-Red O staining, and osteogenic differentiation was confirmed by Alizarin Red staining. The conditioned medium from passages 3-6 was used for EV isolation, and the remaining part was lyophilized at CM10 and CM20 concentrations for in vivo studies. EVs were characterized using transmission electron microscopy and dynamic light scattering. The evaluation included sperm count, motility, morphology, plasma membrane integrity, DNA maturity, DNA fragmentation, and testicular gene expression. Results: The analysis indicated that CM10 significantly enhanced sperm plasma membrane integrity (p < 0.050), sperm DNA maturity (p ≤ 0.001), and decreased DNA fragmentation (p < 0.050) in the busulfan + CM10 group when compared to the Busulfan 2M group, while CM20 and EVs exhibited no significant improvements in these parameters. Furthermore, gene expression analysis revealed that busulfan treatment notably reduced the expression of androgen receptor, cAMP-responsive element-binding 1, and phospholipase C zeta genes, whereas CM10 significantly restored the expression of the cAMP-responsive element-binding 1 gene (p < 0.050). Conclusion: This study shows that CM10 is more effective than CM20 or EVs in alleviating busulfan-induced reproductive toxicity. Keywords: Toxicity, Spermatozoa, Mesenchymal stem cells, Extracellular vesicles, Conditioned medium, DNA fragmentation. The original full text of this abstract has been published: Bahmyari S, Alaee S, Khodabandeh Z, Talaei-Khozani T, Dara M, Mehdinejadiani S, et al. The effects of Wharton’s jelly MSCs secretomes for restoring busulfan-induced reproductive toxicity in male mice. Hum Exp Toxicol 2024; 43: 1-14. Doi: 10.1177/09603271241269019. A-3 Effect of advanced glycation end products on sperm parameters and function in C57Bl/6 mice Darmishonnejad Z1, Hassan Zadeh V2, Tavalaee M3, Kobarfard F4, Hassani M4, Gharagozloo P5, Drevet JR6, Nasr-Esfahani MH6. Department of Biology, Kish International Campus, University of Tehran, Tehran, Iran. Department of Cell and Molecular Biology, Faculty of Biology, College of Sciences, University of Tehran, Tehran, Iran. Department of Animal Biotechnology, Reproductive Biomedicine Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, Iran. Department of Medical Chemistry, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran. CellOxess LLC, Ewing, NJ 08540, USA. GReD Institute, Faculté de Médecine, CRBC, Université Clermont Auvergne, Clermont-Ferrand, France. Email: Z.darmishonnejad@gmail.com Background: Advanced glycation end products (AGEs) are frequently observed in metabolic disorders such as diabetes, obesity, and conditions associated with infertility. These AGEs are strongly correlated with adverse effects on cell and tissue health. Objective: To better understand how AGEs affect both sperm structure and function, our research used mouse models exposed to tailored diets that promote AGE accumulation. Materials and Methods: In this experimental study, we used 2 groups of 5-wk-old C57BL/6 mice: one group received a control diet, while the other was fed a diet enriched in AGEs daily. After 13 wk, we measured several parameters, including fasting blood glucose, body weight, and food intake. In addition, we evaluated sperm quality by assessing sperm concentration, motility, morphology, histone retention, protamine deficiency, DNA damage, lipid peroxidation, cytoplasmic reactive oxygen species, and sperm malondialdehyde levels. In addition, we assessed testicular superoxide dismutase levels, malondialdehyde content, total antioxidant capacity, Johnson scores, and receptor of AGE and carboxymethyl lysine protein contents. Results: After 13 wk, we observed significant differences between AGE and control groups. The AGE group showed increased body weight and fasting blood sugar levels compared with the control group (p < 0.001). However, there were no significant differences in mean testicular volume and testicular weight between groups (p > 0.05), except for adipose tissue epididymal white adipose tissue, which showed a significant difference (p = 0.003) between the groups but only unilaterally. With regard to sperm parameters, the AGE group showed lower mean values and a higher percentage of sperm abnormalities, including nuclear histone retention, chromatin deficiencies, DNA fragmentation, and increased membrane lipid peroxidation, compared to the control group (p < 0.005). In addition, the AGE group showed a significant reduction in total testicular antioxidant capacity and a lower Johnson score compared to the control group (p = 0.04). Mean levels of testicular superoxide dismutase did not differ significantly between groups. However, the AGE group had the highest mean level of testicular malondialdehyde content, as well as a higher accumulation of receptor of AGE and carboxymethyl lysine proteins compared to the control group (p = 0.006, p = 0.002 respectively). Conclusion: AGEs have negative effects on male reproductive health, causing metabolic problems, sperm abnormalities and oxidative stress, highlighting the role these compounds can play in male infertility, particularly in the case of metabolic disorders. Keywords: Advanced glycosylation end products, Carboxymethyl lysine, Receptor of advanced glycation end products, Diabetes mellitus, Oxidative stress. The original full text of this abstract has been published: Darmishonnejad Z, Hassan Zadeh V, Tavalaee M, Kobarfard F, Hassani M, Gharagozloo P, et al. Effect of advanced glycation end products (AGEs) on sperm parameters and function in C57Bl/6 mice. Reprod Sci 2024; 31: 2114-2122. Doi: 10.1007/s43032-024-01507-w. A-4 Identifying causative genes and variants of nonobstructive azoospermia through whole-genome sequencing Ebrahimi Askari R1, Malcher A2, Sadeghzadeh S3, Sefid F3, Ibrahim R2, Pastuszak K4, 5, 6, Srivastava A7, Kalantar SM1, 8, Vahidi S9, Kurpisz M2, Ghasemi N1, 8. Department of Medical Genetics, Faculty of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Institute of Human Genetics, Polish Academy of Sciences, Poznan, Poland. Department of Molecular Medicine, Faculty of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Department of Algorithms and System Modelling, Gdansk University of Technology, Gdansk, Poland. Department of Translational Oncology, Medical University of Gdansk, Gdansk, Poland. Centre of Biostatistics and Bioinformatics, Medical University of Gdansk, Gdansk, Poland. Genome Core Facility, Clinical Laboratory, Haukeland University Hospital, Bergen, Norway. Abortion Research Center, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Department of Urology, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Email: maciej.kurpisz@igcz.poznan.pl; nghasemi479@gmail.com The knowledge of the causes of spermatogenetic failure in non-obstructive azoospermia (NOA) is very limited. The goal is to uncover the causative genes, variants and biological processes implicated in spermatogenic failure. Whole blood samples were collected from tow NOA cases who were referred to Yazd Reproductive Sciences Institute, Yazd, Iran between 2023 and 2024. Cases had normal karyotype and no microdeletions of the Y chromosome. Whole genome sequencing was performed as a collaborative project with Institute of Human Genetics Polish Academy of Sciences, Gdansk, Poland using Illumina HiSeq X. The quality of raw data was evaluated using the FastQC. Reads were aligned to the reference human genome GRCh38 using bwa aligner. Variants were called using freeBayes v0.9.21and annotated using Ensembl Variant Effect Predictor.30.Variants filtered with allele frequency less than 0.01 in gnomAD, high and moderate variant impact, recessive disease model, expression in testis, and potential function and relation with fertility/spermatogenesis. We identified a homozygous variant (c.899C>T; p.Ser300Phe) in SRY-box transcription factor 30 (SOX30) in a NOA case. The variant was not previously reported in a homozygous state in any allele frequency databases. According to the PolyPhen-2 and SIFT result, this mutation is predicted to be probably damaging and not tolerated substitution, respectively. SOX30 is a key regulator of mouse spermiogenesis. We also identified two variants for the other NOA case. The first was a hemizygous novel variant (c.2354A>G; p. Gln785Arg) in the X chromosome-linked A-kinase anchor protein 4 (AKAP4) gene. AKAP4 is highly expressed in spermatids and mature spermatozoa. Some variants in the AKAP4 gene have been reported as causes of male in/subfertility in humans and mice with different male infertility phenotypes ranging from asthenozoospermia, and multiple morphological abnormalities of the sperm flagellum to NOA. The variant is predicted as pathogenic supporting by SIFT. The Q785R amino acid replacement was studied via the NetSurfP-2.0 web service. The mutant protein stability is decreased when the solvent accessibility is increased. Also, absolute solvent accessibility has increased from 40-59 Å and relative solvent accessibility has increased from 22-26%. Another variant was a homozygous ultra-rare variant (c.1472C>T; p.Thr491Met) in the ring finger protein 220 (RNF220) gene. It is expressed in the spermatozoa head and flagellum and plays a vital role in chromatin condensation. The detected c.1472C>T variant has not been reported in a homozygous state previously. Based on NetSurfP-2.0 web service result, absolute solvent accessibility has increased from 25-26 Å and relative solvent accessibility has decreased from 18 to 13% regarding the T491M amino acid replacement. It was shown that Sox30-null male mice are sterile; however, no variant in this gene has been reported related to infertility in humans so far. For the first time, we reported a homozygous variant in the SOX30 gene as a cause of NOA in humans. We also reported a novel hemizygous variant in the AKAP4 gene plus a homozygous variant in the RNF220 gene in one NOA patient unraveling the cause of spermatogenic failure. This work was supported by the National Science Centre in Poland, Grant No. 2020/37/B/NZ5/00549 (to MK) Keywords: Infertility, Nonobstructive azoospermia, Whole-genome sequencing. A-5 Development of bioengineered human artificial testis using 3D bioprinted gelatin methacrylate/ human testicular extracellular matrix scaffold Eyni H1, Shabani R1, Baheiraei N2, Falak R3, Asgari HR1, Koruji M1. Department of Anatomy, School of Medicine, Iran University of Medical Sciences, Tehran, Iran. Tissue Engineering and Applied Cell Sciences Division, Department of Anatomical Sciences, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran. Department of Immunology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran. Email: koruji.m@iums.ac.ir Background: The advancement of in vitro 3D culture techniques for human spermatogonial stem cells has been demonstrated to be an effective approach for the investigation of spermatogenesis. This may potentially provide a viable therapeutic intervention for male infertility. Tissue decellularization represents a potential alternative procedure for enhancing in vitro culture conditions, whereby natural 3D and extracellular matrix (ECM) conditions are provided to support cellular growth. Gelatin methacrylate (GelMA) is an engineered gelatin derivative that has been employed extensively in 3D bioprinting over the past decade due to its exceptional mechanical properties, biocompatibility, and favorable cell adhesion characteristics. Objective: The objective was to develop a novel 3D bioprinted microenvironment using GelMA and     human testicular ECM (htECM) in order to evaluate the in vitro spermatogenesis process in a human bioartificial testis. Materials and Metheds: This experimental study was done during 2023-2024 yr at Iran University of Medical Sciences, Tehran, Iran. At first, 4 human testicular tissues were decellularization and the removal of cellular debris from the tissue samples was confirmed by the hematoxylin and eosin staining and DNA content investigation. The confirmation of the presence of the htECM compound was achieved by the utilization of alcian blue, orcein, and masson's trichrome staining. The synthesized GelMA was subjected to characterization by fourier transform infrared spectroscopy and nuclear magnetic resonance spectroscopy. The htECM was used in the fabrication of a bioprinted scaffold in combination with GelMA. A comprehensive assessment of the mechanical and biological properties was conducted using a range of analytical techniques, including fourier transform infrared spectroscopy, scanning electron microscope, degradation testing, swelling rate, MTT assay and in vivo biocompatibility analysis for GelMA and GelMA/htECM groups. 10 wk after the proliferation and differentiation of human testicular cells on 3D scaffolds, the presence of pre-meiotic and post-meiotic cells in the study groups (GelMA and GelMA/htECM) were assessed by molecular techniques. Results: The decellularization protocol for human testicular tissue was effective in eliminating cellular debris while conserving the ECM compounds (p = 0.001). The GelMA/htECM formulation exhibited a distinctive surface morphology, augmented mechanical properties, and superior performance compared to the GelMA group in terms of MTT and in vitro biocompatibility. The cell viability increased in GelMA/htECM compared to GelMA (p = 0.002). The expression of pre-meiotic markers in cultured testicular cells on GelMA/htECM scaffolds were significant in comparison with GelMA group (p = 0.001). Moreover, the culture of human testicular cells onto GelMA/htECM scaffolds resulted in the generation of post-meiotic haploid cells.  Conclusion: Therefore, GelMA/htECM represents a promising avenue for the development of in vitro spermatogenesis procedures, with the potential to facilitate future sperm production from human spermatogonial stem cells. Keywords: Gelatin, Extracellular matrix, Testis, Bioprinting. A-6 Comparison of double blastocyst transfer versus sequential transfer on pregnancy outcomes in individuals with frozen embryo transfer and a history of recurrent implantation failure: An RCT Hatamizadeh N, Eftekhar M, Aminimajomerd Z, Moeinaddini Sh. Research and Clinical Center for Infertility, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Email: eftekharmaryam1351@gmail.com Background: Recurrent implantation failure poses a significant challenge in assisted reproductive technology despite the transfer of high-quality embryos over multiple cycles. Objective: This study aimed to compare the clinical outcomes between double blastocyst transfer and sequential single cleavage-stage and blastocyst transfer in individuals undergoing frozen embryo transfer and those with a history of repeated implantation failure. Materials and Methods: This randomized clinical trial was conducted at the Research and Clinical Center for Infertility, Yazd, Iran from February to November 2024 and included 125 women (< 45 yr) with a history of more than 2 implantation failures. Participants were randomized into 2 groups: one receiving double blastocyst transfer and the other receiving sequential single cleavage-stage and blastocyst transfer. The primary and secondary outcomes included clinical pregnancy, chemical pregnancy, early abortion, multiple pregnancy, and implantation rates. Results: Baseline characteristics were similar between the 2 groups. Chemical pregnancy rates were comparable (51.6% for double blastocyst transfer vs. 49.2% for sequential transfer, p = 0.790), as were clinical pregnancy rates (46.9% vs. 44.3%, p = 0.769). Early abortion rates showed no significant difference (27.3% vs. 20%, p = 0.498). Multiple pregnancy rates were similar (23.3% vs. 25.9%, p = 0.820), and implantation rates did not differ significantly (28.9% vs. 27.86%, p = 0.889). Conclusion: This study demonstrated that sequential single cleavage-stage and blastocyst transfer does not significantly improve assisted reproductive technology outcomes compared with double blastocyst transfer in individuals with recurrent implantation failure. Both methods had similar efficacy rates in terms of chemical pregnancy rates, clinical pregnancy rates, early abortion rates, multiple pregnancy rates, and implantation rates. Keywords: Assisted reproductive technology, Repeated implantation failure, Blastocyst transfer, Sequential embryo transfer, Pregnancy rates. Registration ID in IRCT: IRCT20110509006420N27 A-7 Evaluation of the effect of lecithin and nanolecithin in repairing membrane damage, maintaining membrane integrity, and improving human sperm function in the freezing–thawing process Khaledi S1, Towhidi A2, Movahedin M2, Nikkhah M3, Halvaei I3. Department of Anatomical Sciences, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran. Department of Animal Sciences, College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran. Department of Nanobiotechnology, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, Iran. Email: ihalvaei@modares.ac.ir Background: Sperm cryopreservation is a routine procedure used in in vitro fertilization clinic. However, cryopreservation is associated with detrimental damaged to spermatozoa. Plasma membrane is one importamt target that could be damaged during cryopreservation. It was shown that lecithin may reduce sperm cryo-damage. Objective: To evaluate protective effects of lecithin and nano-lecithin on human sperm during sperm freeze-thaw process. Materials and Methods: This study was performed in 2 phases. In phase one, human sperm samples were divided to 10 groups to evaluate cryoprotective effects of lecithin and nano-lecithin on sperm parameters during cryopreservation. Sperm freezing media were formulated using lecithin at concentrations of 0.5%, 1%, and 2%, with nanoparticle sizes of 50-100 nm, 100-200 nm, and ≥ 200 nm, while a control group received no lecithin. Following thawing, assessments were performed on sperm motility, viability, mitochondrial membrane potential, lipid peroxidation (via malondialdehyde levels), and DNA fragmentation. In the second phase, the acrosomal reaction was evaluated in the highest and lowest performing groups identified in phase one. Dil labeling was used to investigate the interaction between lecithin nanoparticles and the sperm membrane. Additionally, field emission scanning electron microscopy analyzed the surface structure and binding sites on the sperm membrane, while atomic force microscopy measured surface height variations in the top-performing group. Results: The group treated with 1% lecithin nanoparticles (50-100 nm) demonstrated a significantly higher post-thaw sperm viability compared to all other groups (p < 0.0001), along with lower levels of DNA fragmentation and lipid peroxidation (malondialdehyde). Although all groups experienced a decline in motility after freezing, better outcomes were observed with lower lecithin concentrations and smaller nanoparticle sizes. Mitochondrial membrane potential decreased significantly in all groups, with no notable differences among them. The acrosomal reaction was markedly reduced in the 1% 50-100 nm group compared to the 2% ≥ 200 nm group. Dil labeling and field emission scanning electron microscopy analysis showed that lecithin nanoparticles predominantly attached to and penetrated the sperm membrane, especially in the head and postacrosomal regions. Conclusion: Lecithin nanoparticles efficiently attach to the sperm membrane, providing protection during the freeze-thaw process and enhancing sperm viability. Keywords: Cryopreservation, Lecithin, Nanoparticles, Cryoprotectant agents, Plasma membrane. The original full text of this abstract has been published: Khaledi S, Towhidi A, Movahedin M, Nikkhah M, Halvaei I. Evaluation of the effect of lecithin and nanolecithin in repairing membrane damage, maintaining membrane integrity, and improving human sperm function in the freezing-thawing process. J Assist Reprod Genet 2024; 41: 3133-3146. Doi: 10.1007/s10815-024-03258-8. A-8 Cell phone waves disturbed the morphokinetics, and apoptosis in mouse preimplantation embryos Koohestani Y1, Khalili MA1, Fesahat F2, Seify M1, Mangoli E1, Kalantar SM3, Nottola SA4, Macchiarelli G5, Palmerini MG5. Research and Clinical Center for Infertility, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Reproductive Immunology Research Center, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Department of Genetics, Research and Clinical Center for Infertility, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Department of Anatomy, Histology, Forensic Medicine and Orthopaedics, Sapienza University, Rome, Italy. Department of Life, Health and Environmental Sciences, University of L’Aquila, L’Aquila, Italy. Email: khalili59@hotmail.com Background: Due to the increasing use of smart mobile phones, the impact of radiofrequency electromagnetic radiation (RF-EMR) on reproductive health has become a serious concern. Objective: This study investigated the effect of mobile phone RF-EMR with frequency 900-1800 MHZ on the mouse embryo morphokinetics and genotoxic effect in laboratory conditions. Materials and Methods: In this experimental study, after ovarian stimulation in mice, the metaphase II oocytes were collected and underwent by in vitro fertilization method. The generated zygotes were divided into control and exposed groups. Then, the zygotes with 30 min of exposure to mobile phone RF-EMR, and the control zygotes without exposure, were incubated in the time-lapse for 5 days. The intracellular reactive oxygen species (ROS) level, morphokinetic, embryo viability rate, and gene expression were evaluated. Results: Exposure of zygotes to RF-EMR by inducing ROS caused a significant decrease in blastocyst viability (87.85 ± 2.86 vs. 94.23 ± 2.44, p = 0.0001), delay in cleavage development (t3-t12) and also increased the time (in hours) to reach the blastocyst stage (97.44 ± 5.21 vs. 92.56 ± 6.7, p = 0.04) compared to the control group. A significant increase observed in mRNA levels of Hsp70 in exposed group; while SOD gene expression showed a significant down-regulation in this group compared to the controls, respectively. However, there was no significant change in the transcript level of proapoptotic and antiapoptotic genes in embryos of the exposed group compared to the controls. Conclusion: RF-EMR emitted by mobile phone with a frequency of 900-1800 MHZ, through inducing the production of ROS and oxidative stress, could negatively affect the growth and development as well as the transcript levels of oxidative stress associated genes in the preimplantation embryos of mice. Keywords: Radiofrequency, Electromagnetic radiation, Cell phone, Reactive oxygen species, Apoptosis. The original full text of this abstract has been published: Koohestanidehaghi Y, Khalili MA, Fesahat F, Seify M, Mangoli E, Kalantar SM, et al. Detrimental effects of radiofrequency electromagnetic waves emitted by mobile phones on morphokinetics, oxidative stress, and apoptosis in mouse preimplantation embryos. Environ Pollut 2023; 336: 122411. Doi:10.1016/j.envpol.2023.122411 A-9 Effect of endometrial thickness compaction on pregnancy outcomes in frozen-thawed embryo transfer cycles using hormone replacement therapy: A cross-sectional study Moeinaddini Sh, Dashti S, Aminimajomred Z, Hatamizadeh N. Research and Clinical Center for Infertility, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Email: saeideh_dashti@yahoo.com Background: Endometrial thickness compaction (ETC) is a new ultrasound evaluation method that may predict pregnancy outcomes. Objective: The objective of this study is to determine whether there is an association between the impact of ETC and pregnancy outcomes in frozen embryo transfer (FET) cycles involving hormone replacement therapy (HRT). Materials and Methods: This cross-sectional study includes 100 HRT-FET cycles designed at the in vitro fertilization unit of Yazd Institute of Reproductive Medicine, Yazd, Iran from June to October 2024. The women were admitted for their transvaginal ultrasound examination on the second day and either the 12th or 13th day of the menstrual cycle. Then in the cases of endometrial thickness ≥ 7 mm, high-grade cleavage embryo transfer was performed 3 days following progesterone administration. Participants were divided into 2 groups of compaction and non-compaction groups. Biochemical, clinical, and ongoing pregnancy were assessed as outcomes. Results: Statistical analyses demonstrated significant differences in biochemical, clinical, and ongoing pregnancy outcomes between the compaction and non-compaction groups. The findings of the logistic regression analysis indicated that pregnancy rates were significantly higher in ETC 10-15% and above 15%. We found a significant influence of ETC 10-15% (OR, 5.57; CI, 1.27-24.42; p = 0.02), (OR, 6.66; CI, 1.47-30.10; p = 0.01), (OR, 6.66; CI, 1.47-30.10; p = 0.01) and ETC above 15% (OR, 6.81; CI, 2.06-22.45; p = 0.002), (OR, 8.14; CI, 2.38-27.87; p = 0.001), (OR, 6.66; CI, 1.95-22.73; p = 0.002) on biochemical, clinical and ongoing pregnancy rates, respectively. Conclusion: ETC after progesterone administration in HRT-FET cycles may increase biochemical, clinical, and ongoing pregnancy rates. However, the percentage of ETC changes may also influence the outcomes of these cycles. Keywords: Assisted reproductive technology, Compaction, Endometrium, Embryo transfer, Pregnancy outcome. A-10 A study of genotype-phenotype correlation in idiopathic infertile Iranian men by a family-based exome-sequencing Mousavi SZ1, Soltani B2, Totonchi M2. Department of Molecular Genetics, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, Iran. Department of Genetics, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran. Email: m.totonchi@royaninstitute.org Background: Infertility affects ~15% of couples globally, with male factors contributing to nearly 50% of cases. While over 400 genes are linked to infertility in mice, few causal genes are confirmed in humans. Next-generation sequencing has advanced genotype-phenotype studies in disease research. Objective: This study investigated genetic causes of male infertility using clinical genomics and transcriptomics. Materials and Methods: 1st phase (genomics approach): 150 infertile men from Royan Institute (Tehran, Iran; 2020-2022) underwent clinical evaluations (sperm analysis, karyotyping, AZF microdeletion screening, hormone tests). 3 familial cases were found and (2 with asthenoteratozoospermia, one unexplained) were selected for whole-exome sequencing. Candidate mutations were validated using bioinformatics, co-segregation, and functional assays (population genetics, protein modeling, quantitive reverse transcription polymerase chain reaction, Western blot, electron microscopy (scanning electron microscopy and transmission electron microscopy), physiological and functional sperm tests, including hyperactivation assessments and staining with Papanicolaou, Chromomycin A3, aniline blue and FITC-PSA). 2nd phase (Transcriptomics): meta-analyses of microarray/RNA-seq data identified dysregulated kinases, epigenetic, cytoskeletal, and apoptosis-related genes in teratozoospermia and non-obstructive azoospermia. Systems biology approaches (network analyses, ROC analysis, gene ontology, pathway enrichment, siRNA/ASO design) were applied for further investigation of candidate genes were utilized. Results: The genomics strategy identified mutations in 2 genes, CATSPERB and PDCL2, for the first time in cases of unexplained infertility and asthenoteratozoospermia, respectively. NM_024764.s4: c.2126G>A: p.R709G is a homozygous recessive mutation in the CATSPERB gene, one of the subunits of the CATSPER calcium channel, which plays a crucial role in sperm hyperactivation. NM_152401.3:c.128-1G>A was a homozygous recessive splicing mutation in the PDCL2 gene, which likely acts as a chaperone to facilitate protein folding during spermatogenesis. Additionally, in another family, a novel mutation (NM_031907.2:c.A1205C: p.N402T) in the USP26 gene -an enzyme involved in ubiquitin homeostasis- was reported related with asthenoteratozoospermia. Individuals with mutations in the CATSPERB gene were normal in all sperm parameters except hyperactivation. Individuals with the PDCL2 mutation lacked sperm with normal intracellular sperm organelles, such as axonemal components. During the transcriptomics strategy, 34 kinases, 63 epigenetic factors, 67 apoptosis factors, and 6 cytoskeleton related factors were identified among the differentially expressed genes. Conclusion: This study identified novel mutations/genes in CATSPERB, PDCL2, and USP26 genes associated with male infertility, revealing their roles in sperm hyperactivation, axonemal integrity, and ubiquitin homeostasis. Transcriptomics analysis further uncovered dysregulated pathways in spermatogenesis, including kinase signaling and epigenetic regulation. These findings enhance our understanding of male infertility genetics and provide potential targets for future diagnostic and therapeutic approaches. Keywords: Exome sequencing, Infertility, Male, Genetic association studies, Microarray analysis, Sequence analysis, RNA. A-11 Prenatal kisspeptin antagonist exposure prevents polycystic ovary syndrome development in prenatally-androgenized rats in adulthood: An experimental study Sadeghian Bakhi E1, Hayati Roodbari N1, Anvari M2, Ramezani Tehrani F3. Department of Biology, School of Basic Sciences, Science and Research Branch, Islamic Azad University, Tehran, Iran. Research and Clinical Center for Infertility, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Reproductive Endocrinology Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran. Email: ramezani@endocrine.ac.ir Background: Increased levels of kisspeptin are associated with hypothalamus-pituitary-ovary axis dysfunction. It may lead to the development of polycystic ovary syndrome (PCOS). Objective: We aimed to investigate the effect of prenatal kisspeptin antagonist exposure on the development of PCOS in prenatally androgenized rats in adulthood. Materials and Methods: In this experimental study, pregnant rats were injected with free testosterone (T, 5 mg/day) or T+P271 (kisspeptin antagonist) on the 20th day of the pregnancy period (n = 5/each), while rats in the control group received solvent. Female offspring were examined in terms of anogenital distance (AGD), anovaginal distance (AVD), vaginal opening, serum total testosterone (TT) levels, ovarian follicles, and the regularity of estrous cycles in adulthood. AGD and AVD were measured using a vernier caliper. TT levels were measured by the ELISA method. Ovaries fixed in 10% formalin, processed by a standard protocol, and embedded in paraffin. Ovaries were serially sectioned at 5 μm thickness; sections were mounted on a glass slide, deparaffinized, and stained using Harris’s Hematoxylin and Eosin Y. Results: AGD, AVD (p < 0.001), TT levels (p = 0.02), and the numbers of preantral and antral follicles (p < 0.001) in the ovaries were significantly decreased in prenatally T-P271-exposed rats compared to prenatally T-exposed rats. The age of vaginal opening was early in T-P271-exposed rats compared to prenatally T-exposed rats (p < 0.001). The number of corpora lutea was significantly increased in T-P271-exposed rats (p < 0.001). No cystic follicles were observed in the ovaries of prenatally T-P271-exposed rats. Prenatally T-P271-exposed rats had regular estrous cycles compared to prenatally T-exposed rats. Conclusion: Prenatal exposure to Kisspeptin antagonist can prevent PCOS development in prenatally androgenized rats in adulthood. Keywords: Androgen, Kisspeptin antagonist, Polycystic ovary syndrome, Rat. The original full text of this abstract has been published: Sadeghian Bakhi E, Hayati Roodbari N, Anvari M, Ramezani Tehrani F. Prenatal kisspeptin antagonist exposure prevents polycystic ovary syndrome development in prenatally-androgenized rats in adulthood: An experimental study. Int J Reprod BioMed 2023; 21: 99-110. Doi: 10.18502/ijrm.v21i2.12801. A-12 Investigation of gene mutations in men with oligoasthenoteratozoospermia through whole genome sequencing Sadeghzadeh S1, Malcher A2, Ebrahimi Askari R3, Sefid F1, Ibrahim R2, Pastuszak K4, 5, 6, Srivastava A7, Dehghani MR3, 8, Vahidi S8, Ghasemi N3, 8, Kurpisz M2. Department of Molecular Medicine, Faculty of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Institute of Human Genetics, Polish Academy of Sciences, Poznan, Poland. Department of Medical Genetics, Faculty of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Department of Algorithms and System Modelling, Gdansk University of Technology, Gdansk, Poland. Department of Translational Oncology, Medical University of Gdansk, Gdansk, Poland. Centre of Biostatistics and Bioinformatics, Medical University of Gdansk, Gdansk, Poland. Genome Core Facility, Clinical Laboratory, Haukeland University Hospital, Bergen, Norway. Abortion Research Center, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Email: nghasemi479@gmail.com; kurpimac@man.poznan.pl Oligoasthenoteratozoospermia (OAT) is diagnosed when there is a reduction in sperm count, decreased sperm motility, and structural abnormalities in sperm heads. The genetic causes of spermatogenetic failure in cases with OAT is still not fully understood. 2 male cases with OAT, who referred to Yazd Research and Clinical Center for Infertility, Yazd, Iran between 2023 and 2024, were enrolled in this study. Cases with OAT were initially identified by an andrologist. Blood samples were collected from the cases. Karyotype analysis was conducted, and the cases were screened for Y-chromosome microdeletions. DNA was extracted from the blood of cases with normal karyotypes. For this study, only OAT cases with normal karyotype results and no Y-chromosome microdeletions were selected. whole-genome sequencing was performed as a collaborative project with Institute of Human Genetics Polish Academy of sciences, Gdansk, Poland, using Illumina HiSeq X. The quality of raw data was evaluated using FastQC. Reads were aligned to the reference human genome GRCh38 using BWA aligner. Single nucleotide variants and small indels were called using FreeBayes v0.9.21. Variant files obtained from whole genome data were annotated using Ensembl Variant Effect Predictor. Variants were filtered based on allele frequency < 0.01 in gnomAD, variant impact (high and moderate), recessive inheritance model, testis expression, and potential relevance to fertility and spermatogenesis. We identified potential causative c.*4+1G>T hemizygous splice donor variant in the synovial sarcoma X1 (SSX1) gene. SSX1 is specifically expressed in the testis and is mainly located in germ cells from spermatogonia to spermatocytes according to the Human Protein Atlas database. This gene has a role in spermatogenesis-sperm motility and abnormal sperm morphology. The variant had not been previously reported in homozygous state in any allele frequencies databases. We also found a homozygous missense variant (c.1190A>G) in the copine1 (CPNE1) gene. CPNE1 is expressed in the flagella of mature sperm and plays a role in sperm motility. In addition, CPNE1 may represent a target of Ca2+ channel inhibitors and may therefore be implicated in the regulation of Ca2+ signaling and sperm motility. We also uncovered homozygous missense variants in the coding protein of the MT-ATP6 (c.334A>G) and MT-CYB (c.85G>A) genes. Genetic alterations in the mitochondrial DNA (mtDNA) have been linked to certain types of male infertility and abnormal sperm function. Both genes are involved in sperm motility and male infertility. According to the results of the present study, the identified genes can play a role in spermatogenesis, sperm function, morphology, motility, ATP synthesis, store-operated calcium (Ca2+) entry, and calcium signaling. Moreover, their interacting proteins may also be involved in the pathophysiology of germ cell abnormalities and male infertility. This work was supported by the National Science Centre in Poland, Grant No. 2020/37/B/NZ5/00549 (to MK) Keywords: Male infertility, Oligoasthenoteratozoospermia, Whole-genome sequencing. A-13 Selection of sperm with the highest quality and fertilizing potential using a novel microfluidic sperm sorter Sheibak N1, Amjadi FS2, Shamloo A3, Zarei F3, Zandieh Z3. Department of Anatomical Sciences, School of Medicine, Zahedan University of Medical Sciences, Zahedan, Iran. Department of Anatomical Sciences, School of Medicine, Iran University of Medical Sciences, Tehran, Iran. School of Mechanical Engineering, Sharif University of Technology, Tehran, Iran. Email: zandie.dvm@gmail.com Background: Sperm selection as a critical step prior to assisted reproductive cycles can affect outcomes during infertility treatment. Conventional methods in assisted reproduction are incompetent to select high-quality sperm and may cause sperm damage. Microfluidic sperm sorting (MSS) as a simple, non-invasive, and fast method showed a potential to overcome these issues.  Objective: This study aimed to access the efficiency of a novel MSS to sort high-quality sperm compared to the routine density gradient centrifugation (DGC) and swim-up (SU) methods. Materials and Methods: In the present comparative experimental study, semen samples collected from 50 men with normal semen analysis and 50 infertile men to sort using MSS, DGC, and SU techniques and to compare sperm parameters and fertilizing potential. To determine sperm fertilizing potential expression level of 2 sperm-specific factors, including phospholipase C zeta (PLCζ) and post-acrosomal sheath WW-domain-binding protein were evaluated using flow cytometry and sperm DNA integrity was assessed by chromatin dispersion test. Results: In both groups, the sperm selected by MSS showed the highest progressive motility (p < 0.0001), expression of PLCζ (p < 0.0001) and the highest fluorescence intensity of PLCζ and post-acrosomal sheath WW-domain-binding protein (p < 0.0001 and p = 0.014 respectively), and the minimal percentage of non-progressive motility (p < 0.0001) and DNA fragmentation index (p < 0.0001) compared to DGC and SU techniques. Conclusion: All sperm parameters including motility, DNA integrity, and fertilizing potential could be affected by sperm sorting method. Our findings demonstrated that microfluidic method for sperm sorting can lead to selection of a subpopulation of sperm with the highest quality from raw semen. This technology can improve clinical outcomes following assisted reproductive technologies in infertile couples. Keywords: Spermatozoa, Microfluidics, DNA fragmentation, Sperm-specific proteins, Sperm motility. The original full text of this abstract has been published: Sheibak N, Amjadi F, Shamloo A, Zarei F, Zandieh Z. Microfluidic sperm sorting selects a subpopulation of high-quality sperm with a higher potential for fertilization. Human Reproduction 2024; 39: 902-911. Doi: 10.1093/humrep/deae045. A-14 Alterations expression of key RNA methylation (m6A) enzymes in testicular tissue of rats with induced varicocele Shojaei M1, Tavalaee M2, Nasr-Esfahani MH2, Izadi T2, Safaeinejad Z2, Ghajari E2, Ghazavi B2, Valipour Motlagh A2. Isfahan Branch, ACECR Institute of Higher Education, Isfahan, Iran. Department of Animal Biotechnology, Reproductive Biomedicine Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, Iran. Email: m.shojaei6731@gmail.com Background: Epigenetics plays a vital role in male fertility and reproductive health. Among RNA modifications, N6-methyladenosine (m6A) significantly impacts RNA metabolism. Varicocele, a leading cause of male infertility, is associated with oxidative stress, which adversely affects sperm function. Objective: This study aims to investigate the impact of varicocele-induced oxidative stress on testicular histology, sperm quality, and the expression of RNA modification enzymes including methyltransferase-like 3 (METTL3), alkB homolog 5 (ALKBH5), fat mass and obesity-associated protein (FTO), and YT521-B homology (YTHDF2) in a rat model. Materials and Methods: In this experimental study, 15 male Wistar rats (150-200 gr, 6-8 wk) were randomly assigned to 3 groups: control, sham, and varicocele induction (n = 5/each). Varicocele was surgically induced in the experimental group. After 8 wk, testicular tissues and sperm were collected for analysis. Assessments included histopathological evaluation, sperm parameter analysis, functional tests, and gene expression profiling of key RNA modification enzymes: METTL3 (writer), ALKBH5 and FTO (erasers), and YTHDF2 (reader), using real-time quantitative reverse transcription polymerase chain reaction. Results: Induction of varicocele resulted in significant histological alterations, including irregular morphology of the seminiferous tubules. Sperm quality was significantly impaired in the varicocele group, evidenced by decreased concentration (p = 0.006), and increased abnormal morphology (p = 0.001). Markers of oxidative stress such as elevated sperm lipid peroxidation (p = 0.028), increased intracytoplasmic reactive oxygen species levels (p = 0.001), and heightened DNA damage (p = 0.006) were significantly elevated. Gene expression analysis showed downregulation of METTL3 (p = 0.001), ALKBH5 (p = 0.006), FTO (p = 0.008), and YTHDF2 (p = 0.006) in the varicocele group compared to controls, indicating disrupted m6A-RNA metabolic processes. Conclusion: These findings highlight the detrimental effects of varicocele on testicular architecture, sperm quality, and the expression of critical m6A-RNA modification enzymes. The results contribute to a deeper understanding of the epigenetic modifications underlying varicocele-associated male infertility and may inform future therapeutic strategies. Keywords: Chromatin, Oxidative stress, Methylation, Spermatozoa, Varicocele. The original full text of this abstract has been published: Shojaei M, Tavalaee M, Ghazavi B, Izadi T, Safaeinejad Z, Ghajari E, et al. Alterations expression of key RNA methylation (m6A) enzymes in testicular tissue of rats with induced varicocele. Reprod Sci 2025; 32: 218-228. Doi: 10.1007/s43032-024-01747-w. A-15 Design and implementation of a machine-learning-based method to predict pregnancy loss in women undergoing assisted reproductive technology cycles Zare M1, 2, Hashemzadeh M1, Tabibnejad N2. Faculty of Information Technology and Computer Engineering, Azarbaijan Shahid Madani University, Tabriz, Iran. Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Email: mozr2010@gmail.com Background: The issue of abortion manifests in approximately 10-15% of natural pregnancies, and this percentage escalates significantly in pregnancies resulting from assisted reproductive methods. Infertile couples experience considerable mental and emotional distress throughout their journey of self-belief therapy. Predicting the outcome of such treatment can alleviate the anxiety of these couples. Objective: This study aims to construct a machine learning-based method for predicting chemical abortion in infertile women who have conceived through assisted reproductive methods, intending to provide an initial assessment. Materials and Methods: This retrospective study comprises 2 pivotal phases: 1) data extraction, and 2) model implementation, leveraging the database at the Yazd Reproductive Sciences Institute, Yazd, Iran. The process of addressing duplicate data, variable description discrepancies, and user-generated data entry errors proved to be the most time-intensive aspects of this study. With the invaluable guidance of medical professionals and experts, these challenges were tackled in 2 phases; the extracted data from the study group was meticulously cross-referenced with the registered physical or electronic records to confirm or rectify the information. This process yielded 1234 samples encompassing 32 selected variables. Subsequently, the data pre-processing phase, deemed crucial for model implementation and design, paved the way for the actual modeling. Learning algorithms such as decision tree, random forest, logistic regression, and support vector machine were employed, taking into account the imbalanced nature of the dataset. Balancing techniques, including the synthetic minority over-sampling technique and the adaptive synthetic sampling approach for imbalanced learning algorithms, were explored to enhance the model performance. Results: In evaluating the models on unbalanced, reduced, and balanced datasets with selected features, the random forest algorithm showed the strongest performance, achieving classification accuracies of 82.2%, 81.18%, and 79.20%, respectively. Among the implemented models, the support vector machine significantly improved recall criteria for miscarriage prediction when applied to the balanced dataset using the adaptive synthetic sampling approach for the imbalanced learning algorithm. This finding emphasizes the potential impact of data balance strategies in increasing the sensitivity of prediction models, especially for identifying minority class samples. Feature-importance analysis identified 12 key predictors of miscarriage: sperm non-progressive motility, thyroid-stimulating hormone levels, female age, number of previous abortions, body mass index, assisted reproductive technology protocol plan, assisted reproductive technology history, ovarian stimulation protocol, intrauterine insemination history, sperm immotility, normal sperm morphology, and regular menstrual cycles. Conclusion: This study successfully developed a machine learning-based approach for predicting chemical pregnancy loss in infertile women undergoing assisted reproductive technologies. The results emphasize the importance of the identified variables, which offer valuable insights for clinical decision-making and future research. While the random forest model performed optimally in predicting outcomes, this research highlights the need for further refinement, including the integration of more comprehensive clinical data. Future studies should focus on improving the model’s applicability in diverse clinical settings, enhancing its accuracy by incorporating a broader range of clinical factors, and evaluating alternative machine learning techniques for better prediction accuracy. Keywords: Infertility, Pregnancy loss, Machine learning, Prediction, Classification. A-16 Ultra-rapid freezing and rapid freezing methods in clinical intracytoplasmic sperm injection program: Effects on sperm biological characteristics, DNA methylation stability, DNA methyltransferase activity, and embryo morphokinetics Zohrabi M1, Khalili MA1, Mangoli E1, Zare F2, Woodward B3, Aflatoonian B4. Department of Reproductive Biology, School of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Reproductive Immunology Research Center, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. X and Y Fertility, Leicester, UK. Stem Cell Biology Research Center, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Email: khalili59@hotmail.com Background: Sperm cryopreservation is one of the routine methods in assisted reproductive technology to preserve fertility in men. Currently, methods suggested for sperm cryopreservation are rapid freezing and ultra-rapid freezing. Compared to the rapid method, ultra-rapid freezing is simple and also, there is no need to use cyclopiazonic acid which can be cytotoxic. Objective: In this study, differences in sperm function and embryo morphokinetics after sperm cryopreservation using ultra-rapid freezing or rapid freezing methods were evaluated compared to fresh sperm. Moreover, regarding role of sperm cryopreservation on DNA methylation and the concern of transferring methylation changes to children, it is necessary to choose sperm cryopreservation method with the highest efficiency. Materials and Methods: This study is an experimental trial. A total of 30 samples of normozoospermia were divided equally into three groups of fresh, ultra-rapid freezing and rapid freezing. In rapid freezing, the sperm suspension was placed horizontally on nitrogen vapor. In ultra-rapid freezing, the sperm suspension was directly immersed in liquid nitrogen using a straw-in-straw system. Sperm performance was assessed in terms of motility, morphology, viability, mitochondrial membrane potential, sperm DNA fragmentation, and acrosome reaction status. Also, the effects of the 2 freezing methods on global DNA methylation and DNA methyltransferase activity were compared. In addition, 730 embryos in three groups were cultured using time-lapse imaging up to day 6 to assess embryo morphokinetic activity. Results: Progressive motility (38.80 ± 4.21 vs. 34.86 ± 4.19; p < 0.001) and viability (64.30 ± 6.24 vs. 58.10 ± 8.69; p < 0.01) in ultra-rapid freezing were significantly higher than rapid group. DNA fragmentation and acrosome reaction were significantly increased in both cryopreserved groups (p < 0.001). However, DNA fragmentation (16.30 ± 1.14 vs. 14.33 ± 2.94; p < 0.01) was significantly higher in the rapid than the ultra-rapid freezing group. No significant differences were noted in global DNA methylation (p > 0.05) and DNA methyltransferases activity (p > 0.05) in fresh compared to cryopreservation groups. The kinetic times, including tPB2, tPNa, tPNf, t2, t3, t4, t5, t6, t7, t8, and tM, showed a significant delay in cell divisions in both cryopreservation groups. Furthermore, tPNa, tPNf, and t8 occurred with a significantly higher delay in embryos fertilized by sperm from the rapid freezing compared to the ultra-rapid freezing group. In addition, blastocysts formation was similar in both cryopreservation groups. Conclusion: The superiority of sperm progressive motility, viability, DNA integrity and embryo kinetics were observed in the Ultra-rapid freezing compared to the rapid method. Ultra-rapid freezing preserved the sperm biological integrity and lead to better embryo morphokinetics compared to the rapid freezing method. However, both methods of sperm cryopreservation were epigenetically safe. Keywords: Human spermatozoa, Ultra-rapid freezing, Rapid freezing, Sperm DNA fragmentation, DNA methylation, DNA methyltransferases, ICSI, Time-lapse, Embryo development. The original full text of this abstract has been published: Zohrabi M, Khalili MA, Mangoli E, Zare F, Woodward B, Aflatoonian B. Ultra-rapid freezing and rapid freezing methods in clinical ICSI program: Effects on sperm biological characteristics, DNA methylation stability, DNA methyltransferase activity, and embryo morphokinetics. Andrologia 2024; 1: 2789285. Doi:10.1155/2024/2789285.   2025 5 01 29 38 http://ijrm.ir/article-1-3698-en.pdf

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International Journal of Reproductive BioMedicine IJRM 2476-4108 2476-3772 10.29252/ijrm 2025 23 5 Amini Mahabadi J O-1 The use of machine learning for human sperm and oocyte selection and success rate in in vitro fertilization methods Amini Mahabadi J1, Enderami E2, Nikzad M1, 3, Hassani Bafrani H3. Gametogenesis Research Center, Kashan University of Medical Sciences, Kashan, Iran. Immunogenetics Research Center, Department of Medical Biotechnology, School of Advanced Technologies in Medicine, Mazandaran University of Medical Sciences, Sari, Iran. Anatomical Sciences Research Center, Institute for Basic Sciences, Kashan University of Medical Sciences, Kashan, Iran. Email: amini-ja@kaums.ac.ir Infertility is indeed a significant global health concern. The quality of gametes plays a pivotal role in determining the success rates of assisted reproductive technology (ART) cycles. In contemporary fertility and reproductive medicine, the utilization of machine learning (ML) has emerged as a powerful tool for processing large datasets, offering the potential to enhance existing ART practices. Therefore, the aim of this study was to evaluate the use of ML for human sperm and oocyte selection and success rate in in vitro fertilization methods. The objective of this narrative review study was to assess sperm and oocyte characteristics in humans using ML techniques. This approach can contribute to a more precise evaluation of the gamete, leading to improved decision-making and potentially higher success rates in ART procedures. Using ML abilities, researchers can obtain valuable insights into the quality of gametes, thereby optimizing fertility treatments for individuals and couples experiencing infertility issues. In this narrative review, we conducted a comprehensive search on PubMed, Google Scholar, and Scopus using the keywords "Machine Learning AND Quantification AND IVF". Eligible articles were initially screened based on their titles. After the title screening, a second screening was performed based on the abstracts of the selected articles. Finally, the full articles of the remaining studies were reviewed to ensure they met our inclusion criteria. From each eligible study, we extracted the following information: author(s) of the study, publication year, and the method employed to evaluate human oocyte quality. The development of a properly trained ML system will require careful attention to data quality, measurement, sample size, and ethics issues agreement. Keywords: Artificial intelligence, Deep learning, In vitro fertilization, Machine learning, Oocyte, Sperm. O-2 Comparison of pregnancy outcome after adding oral or intramuscular progesterone to vaginal progesterone in frozen embryo transfer: A cross-sectional study Arabian S1, Eftekhar M1, Dashti S1, Homayoon N1, Nikfarjam E1, 2. Research and Clinical Center for Infertility, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Gynecology and Infertility Department, Shiraz Fertility Center, Shiraz, Iran. Email: eftekharmaryam1351@gmail.com Background: Frozen embryo transfers (FET) now represent 41% of all embryo transfer cycles. While vaginal progesterone preparations have emerged as the preferred option for luteal phase support due to their ease of use, relying solely on vaginal progesterone in FET cycles has been associated with lower ongoing pregnancy rates. Intramuscular (IM) progesterone requires daily injections, which can be painful. Replacing IM progesterone with oral progesterone in women using vaginal progesterone for luteal phase support may result in comparable pregnancy outcomes. Objective: This study aimed to evaluate the impact of replacing IM progesterone with oral dydrogesterone on pregnancy outcomes in FET cycles. Materials and Methods: In this cross-sectional study, pregnancy outcomes were evaluated in women who underwent cleavage-stage FET during hormone replacement therapy endometrial preparation cycles at Yazd Reproductive Sciences Institute, Yazd, Iran, between April 2023 and November 2023. Participants were divided into 2 groups based on their LPS regimen: the dydrogesterone group, receiving vaginal progesterone combined with oral dydrogesterone, and the IM progesterone group, receiving vaginal progesterone alongside IM progesterone. Data were collected from participants records to compare pregnancy outcomes between groups. Results: A total of 960 cycles meeting the inclusion criteria were analyzed, with 292 women in the dydrogesterone group and 668 women in the IM progesterone group, and pregnancy outcomes were compared between the 2 groups. The chemical pregnancy rates (28.4% vs. 29.9%, p = 0.636), clinical pregnancy rates (25.3% vs. 26.9%, p = 0.604), and ongoing pregnancy rates (21.9% vs. 23.8%, p = 0.525) were lower and miscarriage rates (14.7% vs. 11.7%, p = 0.210) were higher in dydrogesterone group compared to IM progesterone group, although this difference was not statistically significant. Conclusion: Due to its convenient administration and similar pregnancy outcomes, oral dydrogesterone may serve as an effective alternative to daily IM progesterone injections. Keywords: Assisted reproductive technology, Luteal phase, Progesterone, Embryo transfer. The original full text of this abstract has been published: Arabian S, Eftekhar M, Dashti S, Homayoon N, Nikfarjam E. Comparison of pregnancy outcome after adding oral or intramuscular progesterone to vaginal progesterone in frozen embryo transfer: A cross-sectional study. Int J Reprod BioMed 2024; 22: 763-770. Doi: 10.18502/ijrm.v22i10.17661. O-3 The impact of ovarian stimulation drugs on peripheral blood natural killer cells in women with endometriosis undergoing assisted reproductive technology Balalak R1, Elyasifar F1, Azimi M2, Takhiri F3, Hafezi M3, Amirchaghmaghi E3, Ebrahimi M3. Department of Cell and Molecular Biology Sciences, Faculty New Biological Sciences and Technologies, University of Science and Culture, ACECR, Tehran, Iran. Department of Stem Cells and Developmental Biology, Cell Sciences Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran. Department of Endocrinology and Female Infertility, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran. Email: marzieh.ebrahimi@gmail.com Background: Endometriosis, as an estrogen dependent disease in women of reproductive age could lead to infertility. Some infertile women with endometriosis undergo assisted reproductive technology (ART). On the other hand, it is suggested that natural killer (NK) cells, as one of the innate immune cells, play role in the pathogenesis of endometriosis. Although, different studies showed that long term use of gonadotropin-releasing hormone (GnRH) agonist drugs in the treatment of endometriosis could lead to alteration in NK cells percentage and activity in peripheral venous blood and peritoneal fluid. Still, the effect of short-term use of these hormonal drugs on NK cells in endometriosis is less studied. Objective: This study aimed to evaluate the effect of ovarian stimulating drugs administered in long GnRH agonist and GnRH antagonist protocols on peripheral venous blood NK cells percentage and activity in infertile women with endometriosis undergoing ART. Materials and Methods: In this prospective cohort study which was conducted at Royan Institute, Tehran, Iran between 2024 and 2025, 40 infertile women with endometriosis undergoing ART will be enrolled and follow up till ovum pick-up day. Venous blood samples from women with endometriosis were taken from participants before and after ovarian stimulation. Whole venous blood samples will be collected at 2 or 3 time points: 1) on the start day of the ovulation stimulation cycle (day 2-3 of the menstrual cycle), 2) on the day of starting gonadotropin (if possible) and 3) ovum pickup day. Each blood sample will be analyzed using specific antibodies against CD56 (NK cell surface marker), CD16 (another NK surface marker), CD3 (T cell marker) and CD107a (NK cell activity marker) by flow cytometry. Results: Till now, 23 endometriosis women were enrolled. The mean body mass index was 24.72 Kg/m2 and mean of age was 33.17 yr old. The mean percentage of NK cells (CD3-CD56 + cells) in starting day of stimulation cycle was 9.278 ± 0.9367% and in ovum pick up day was 9.201 ± 0.8514% which this difference was not statistically significant (p = 0.4719). The percentage of cytotoxicity markers (CD16+CD107a+) on NK cells was 8.746 ± 1.192% on the starting day of the stimulation cycle and 6.851 ± 0.9860% on the ovum pick-up day which its change was not significant (p = 0.1220). Conclusion: Our preliminary data showed that the short-term use of GnRH agonist and antagonist drugs in ovarian stimulation protocols could not significantly change the percentage and cytotoxicity of venous blood NK cells. Completion of the sample size of the present study is needed for definite conclusion. Keywords: Endometriosis, Natural killer cells, Gonadotropin releasing hormone agonist, Gonadotropin releasing hormone antagonist, ART, Peripheral blood. O-4 Impact of metformin on reproductive outcomes after spermatogonial stem cell transplantation Bashghareh A1, Hedayatpour A2, Modarresi P3, Kazemzade Sh4. Department of Anatomy, School of Medicine, Shahroud University of Medical Sciences, Shahroud, Iran. Department of Anatomy, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran. Faculty of Veterinary Medicine, Islamic Azad University, Shabestar, Iran. Shoushtar Faculty of Medical Sciences, Shoushtar, Iran. Email: alieh.bashghareh@yahoo.com Background: Cryopreservation and transplantation of spermatogonial stem cells present a promising strategy for fertility restoration in patients who have undergone childhood cancer treatment. Additionally, metformin (MET), known for its antioxidant properties, may help mitigate chemotherapy-induced damage. Objective: This experimental study aimed to assess the protective effect of MET against oxidative stress induced by busulfan and cadmium exposure, and to evaluate its impact on spermatogenesis restoration following spermatogonial stem cell transplantation (SSCT). Materials and Methods: 40 adult male NMRI mice (6-8 wk) were used for the long-term infertility model induced by cadmium and busulfan treatment. The mice were divided into 4 groups (n = 10/each): busulfan and cadmium-treated, SSCT, MET-SSCT, and control. To evaluate the protective effect of MET against reactive oxygen species production, flow cytometry was employed. Proliferation and differentiation markers were assessed by immunofluorescence. Results: Our findings demonstrated a significant reduction in reactive oxygen species production in the MET-treated cryopreservation group. Moreover, the expression of proliferation and differentiation markers following transplantation was significantly higher in the cryopreservation group with MET compared to the basic freezing medium group (p ≤ 0.001). Conclusion: Transplantation of spermatogonial stem cells with MET significantly enhances spermatogenesis and improves the homing efficiency of transplanted spermatogonial stem cells. This approach shows potential for fertility restoration in clinical settings, particularly for patients who have undergone childhood cancer treatments. Keywords: Azoospermia, Infertility, Metformin, Spermatogonial stem cells, Transplantation. The original full text of this abstract has been published: Hedayatpour A, Modarresi P, Kazemzadeh S, Bashghareh A. Effect of metformin on spermatogenesis restoration following spermatogonial stem cell transplantation in an azoospermia mouse model. Cell J 2025; 26: 611-618. Doi: 10.22074/cellj.2025.2040810.1669. O-5 Designing an expert system to predict live birth in assisted reproductive technology cycles using machine learning Farzandipour M1, Esmaeili M2, Tabibnejad N3, Heydari SS4. Health Information Management Research Center, Kashan University of Medical Sciences, Kashan, Iran. Department of Computer Engineering, Kashan Branch, Islamic Azad University, Kashan, Iran. Reproductive Immunology Research Center, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Department of Health Information Management and Technology, School of Allied Health Professions, Kashan, Iran. Email: safiyehsadat.heydari@gmail.com Background: Infertility is defined as the inability to conceive naturally after one year of regular unprotected intercourse. Approximately one in six people worldwide experience infertility. The overall success rate of treatment using assisted reproductive technologies (ART) is low. Expert systems (ES) which designed based on mining the real data using machine learning can improve the clinical expert's decision-making and predicting the outcome of infertility treatments with greater accuracy and effectiveness. Association rule mining, as an algorithm in machine learning, can be used to identify relationships in data and designing ES. Objective: This study aims to design an ES for predicting live birth rate (LBR) in ART cycles using association rule mining. Materials and Methods: This research was done retrospectively. In the first stage, data on 4,290 cycles of infertile couples who referred to Yazd Reproductive Sciences Institute, Yazd, Iran from 2018-2020, which resulted in or did not result in LBR, were received in Excel. After data preprocessing, rules related to LBRwere extracted using Python. All extracted rules were evaluated based on reporting the indices of confidence, support, and experts opinions. The minimum support and the minimum confidence were considered 0.5 and 0.95, respectively. The web-based expert system was designed based on the selected final rules using JavaScript. Results: 74 predictors were considered to extract association rules which resulted in 632 rules, of which 274 rules were evaluated calculating formal metrics including confidence and support. Finally, 32 rules were remained based on informal evaluation using experts opinions that were placed in the knowledge database of the ES. Then, ES was designed for six major causes of infertility including male infertility, unknown infertility, mixed infertility, polycystic ovary syndrome, premature ovarian failure, female factors except polycystic ovary syndrome and premature ovarian failure. 23 predictors were appeared in the antecedent (if) part of the final association rules. Conclusion: The ES of LBR prediction can predict LBRin ART cycles. Considering the good performance of ES in predicting LBR, their use as an auxiliary tool in clinical decision-making is recommended. Keywords: Expert system, Association rules, Live birth, Machine learning, Infertility. O-6 A systematic review of assisted and third-party reproduction guidelines regarding management and care of donors Iranifard E1, 2, Ebrahimzadeh Zagami S2, 3, Amirian M4, Ebrahimipour H5, Latifnejad Roudsari R2, 3. Department of Midwifery, Maybod Branch, Islamic Azad University, Maybod, Iran. Department of Midwifery, School of Nursing and Midwifery, Mashhad University of Medical Sciences, Mashhad, Iran. Nursing and Midwifery Care Research Center, Mashad University of Medical Sciences, Mashhad, Iran. Department of Obstetrics and Gynecology, School of Medicine, Milad Infertility Treatment Center of Mashhad, University of Medical Sciences, Mashhad, Iran. Department of Health Economics and Management, School of Health, Mashhad University of Medical Sciences, Mashhad, Iran. Email: rlatifnejad@yahoo.com Background: Gamete and embryo donors encounter multifaceted challenges influencing their health and quality of life. Healthcare providers require comprehensive, evidence-based guidelines to support reproductive donors, effectively. Objective: This systematic review aimed to synthesize current assisted and third-party reproduction guidelines regarding management and care of donors.  Materials and Methods: A systematic review was conducted, adhering to PRISMA guidelines. Databases including PubMed, Scopus, and Web of Science, as well as websites of relevant organizations including American Society for Reproductive Medicine, European Society of Human Reproduction and Embryology, and Human Fertilization and Embryology Authority were searched without time restrictions up to July 2023. Search terms included "third-party reproduction", "gamete donation", "embryo donation", "guidelines", "committee opinion", and "best practice". Inclusion criteria encompassed English-language documents providing clinical or ethical guidance on donor management and care. Eleven guidelines were retrieved through related organizational. Websites and 317 studies were identified through searching electronic databases. After removing the duplicate studies and those articles that did not meet the inclusion criteria, full-texts of 21 articles were assessed for eligibility of which 16 articles were previous versions of included guidelines. Eventually, 5 studies that met the inclusion criteria and 9 guidelines were included in the review. The 14 documents, included 8 guidelines, 3 practice codes, and 3 committee opinions. Quality assessment was performed using the AGREE II instrument. The data of included documents were extracted and synthesized using narrative synthesis. Results: The 14 documents including eight guidelines, 3 practice codes and three committee opinions originated from various regions across the world: 5 from the United States, 3 from Canada, 2 from the United Kingdom, 1 from Australia, 1 jointly from Australia and New Zealand, and 2 from the European Society of Human Reproduction and Embryology. Key areas addressed in these guidelines were classified into four categories including screening, counseling, information provision, and ethical considerations. Conclusion: While existing guidelines offer fundamental recommendations for donors management and care, they often lack comprehensive coverage of critical areas affecting donors well-being. There is an urgent need for development of robust, evidence-based guidelines that holistically address the physical, psycho-social, ethical and legal needs of gamete and embryo donors. Future research should focus on these gaps to enhance donor care practices, globally. Keywords: Egg donors, Embryo donors, Sperm donors, Third party reproduction, Gamete donation, Guidelines, Systematic review. The original full text of this abstract has been already published: Iranifard E, Ebrahimzadeh Zagami S, Amirian M, Ebrahimipour H, Latifnejad Roudsari R. A systematic review of assisted and third-party reproduction guidelines regarding management and care of donors. Reprod Health 2024; 21: 75. Doi: 10.1186/s12978-024-01804-2. O-7 Artificial intelligence-driven embryo selection in in vitro fertilization Kalami Yazdi R1, Mojavezi AR1, Arjmand B2. Iranian Cancer Control Center (MACSA), Tehran, Iran. Cell Therapy and Regenerative Medicine Research Center, Endocrinology and Metabolism Molecular-Cellular Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran. Email: barjmand@tums.ac.ir The success of in vitro fertilization (IVF) largely depends on precise embryo selection for transfer. The standard procedure, traditional morphological evaluation by embryologists, is subjective and limited by inter-observer variability. This may result in less-than-ideal choices and reduced pregnancy rates. Artificial intelligence (AI), particularly deep learning algorithms, has unveiled a world of possibilities to improve embryo selection by objectively analyzing vast volumes of data combining genetic information and time-lapse images. The study's main objectives were to highlight the impact of AI on clinical results, compare it with conventional techniques, and explore the possibility of improving efficiency and standardization in IVF laboratories. Moreover, searching databases such as PubMed, Scopus, and Google Scholar by keywords such as "artificial intelligence", "embryo selection", "IVF", "deep learning", "time-lapse imaging", and "preimplantation genetic testing" revealed relevant results. In this context, the researchers suggest that AI systems analyze embryo images and time-lapse videos, in order to identify the features and patterns linked to implantation potential. AI-based selection often matched or exceeded the accuracy of traditional embryologist assessments, which provides greater objectivity, reduced variability, and the ability to process complex datasets. As a matter of fact, integration with time-lapse imaging enabled non-invasive monitoring, while some studies combined AI with genetic testing to refine selection. Furthermore, AI-driven embryo selection has the capacity to markedly enhance IVF outcomes by offering a more objective, consistent, and efficient approach to the identification of viable embryos. Although further extensive clinical studies are required to test its broad application and optimize AI algorithms, the present data suggests that AI has the capacity to transform embryo selection in IVF, thereby increasing pregnancy rates and creating better futures for patients. Future studies should focus on developing more complex AI models, combining several data sources (morphology, time-lapse, genetics), and addressing the ethical issues of AI application in clinical practice. The current situation of AI-driven embryo selection in IVF is investigated in this review, along with its possible advantages, constraints, and future possibilities. Keywords: AI, IVF, Infertility. O-8 Ameliorative effect of zinc oxide nanoparticles on daily sperm production and sperm parameters in mice under oxidative stress induced by taxol Kahedi M, Mahmoodi M, Yengi Maleki Z. Department of Biology, Faculty of Science, Arak University, Arak, Iran. Email: m-mahmoodi@araku.ac.ir Background: Infertility is a significant issue for young men of reproductive age who are undergoing chemotherapy. Typically, chemotherapy drugs affect rapidly dividing germ cells, resulting in compromised spermatogenesis and a decrease in sperm count among cancer survivors. Objective: This study investigated the effects of taxol on sperm parameters and oxidative stress and antioxidant properties of zinc oxide nanoparticles in adult male NMRI mice. Materials and Methods: For doing this research at Arak University, Arak, Iran in 2023, 24 adult male NMRI mice (35 ± 2 gr, 8 wk) were divided into 4 groups (n = 6/each), control, taxol (5 mg/kg), zinc oxide nanoparticles (5 mg/kg) and taxol+zinc oxide nanoparticles groups. Animals were intraperitoneally treated for 35 days. Then, mice were anesthetized, and the caudal region of the left epididymis was used to measure the sperm parameters and the right testis to calculate the daily sperm production. Total antioxidant capacity and malondialdehyde levels were also measured and compared between groups. Results: Infertility is a significant issue for young men of reproductive age who are undergoing chemotherapy. Typically, chemotherapy drugs affect rapidly dividing germ cells, resulting in compromised spermatogenesis and a decrease in sperm count among cancer survivors. Conclusion: The results of this research indicated that zinc oxide nanoparticles, because of their strong and effective antioxidant characteristics, have the ability to mitigate the harmful impacts of taxol on sperm quality. Keywords: Taxol, Zinc oxide nanoparticles, Sperm, Oxidative stress, Mice. O-9 The effect of exosomes extracted from human embryonic stem cells derived mesenchymal stem/stromal cells on polycystic ovary syndrome in rat model Karimi M1, Aflatoonian B1, 2, 3. Stem Cell Biology Research Center, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Research and Clinical Center for Infertility, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Department of Reproductive Biology, School of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Email: b.aflatoonian@ssu.ac.ir Background: Polycystic ovary syndrome (PCOS) is the most medically cause of female infertility, which several treatment methods have been used to treat this syndrome. However, recently stem cell therapy opened new hopes for the patients and clinicians to treat PCOS more effective in a safer approach. The secretome of these cells contains growth factors, cytokines and extracellular vesicles (exosomes, micro-vesicles and apoptotic bodies), which are effective in the treatment of PCOS. Objective: We aimed to investigate the effect of exosomes extracted from human embryonic stem cells derived mesenchymal stem/stromal cells on PCOS in rat. Materials and Methods: 24 adult female Wistar rats were randomly separate into 4 groups of control (C), PCOS, treatment 1 (T1), and treatment 2 (T2). After induction of PCOS using letrozole (1 mg/kg) dissolved in normal saline (2 ml/kg), in T1 and T2 groups they were treated with intra ovarian injection of exosomes (50 and 100 µg/µl, respectively). At the end of the treatment period, the blood testosterone level, and weight and size of ovaries were measured and compared between groups. Results: The weight (p = 0.017) and size (p = 0.019) of ovaries significantly increased in the PCOS group compared to C group, and significantly decreased in T1 and T2 groups. Also, testosterone level in T1 and T2 groups were significantly lower than the PCOS group (p = 0.018). In sum in T2 group exosome treatment was significantly more efficient than T1 group. Conclusion: Our findings indicated that exosomes extracted from human embryonic stem cells derived mesenchymal stem/stromal cells improve PCOS treatment in animal model especially in higher concentration (100 µg/µl). Keywords: Extracellular vesicles, Exosomes, Human embryonic stem cells, Mesenchymal stem/stromal cells, Polycystic ovary syndrome. O-10 Impact of Vitamin D3 Supplementation on Sperm Quality, Oxidative Stress Markers, and Reproductive Hormones in Infertile Men with Asthenospermia: A Triple-Blind Clinical Trial Maghsoumi-Norouzabad L1, Zare Javid A2, Moini Jazani A1, Nasimi Doost Azgomi R1. Traditional Medicine and Hydrotherapy Research Center, Ardabil University of Medical Sciences, Ardabil, Iran. Nutrition and Metabolic Diseases Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran. Email: L.maghsumi55@gmail.com Background: The male reproductive system is known to be a target tissue for vitamin D3 (VD3). Animal models and cross-sectional cohort studies have suggested a beneficial role for VD3 in male reproduction. Objective: This study aimed to evaluate the effects of VD3 supplementation on sperm parameters, seminal and serum levels of oxidative stress, and serum endocrine factors in asthenospermia infertile men. Materials and Methods: This randomized, triple-blind, placebo-controlled clinical trial was conducted on 86 asthenospermia infertile men with serum 25-hydroxy VD3 (25-OH-D3) < 30 ng/ml who were referred to the infertility clinic of Ahvaz Jahad Daneshgahi, Ahvaz, Iran, from 2018-2020. Participants were randomly allocated by statistical software using classified randomized blocking method (4 blocks) based on age (20-40 and 40-49) and sperm concentration (5-15 and 15-20 million/ml) to groups A and B, who received 4000 IU VD3 daily and a matching placebo for 3 months. Demographic data, dietary intake, physical activity, sun exposure, anthropometric indices, serum and seminal levels of malondialdehyde, 8-hydroxy-2-deoxy guanosine, total antioxidant capacity and calcium, sperm DNA fragmentation index, serum 25-OH-D3, luteinizing hormone, follicle-stimulating hormone, total testosterone, estradiol, sex hormone-binding globulin, total testosterone/luteinizing hormone and total testosterone/estradiol ratios, prolactin, parathyroid hormone, osteocalcin, phosphorus and sperm parameters including semen volume, total sperm count, sperm motility and sperm morphology were assessed before and after intervention. Results: VD3 supplementation led to a significant increase in serum 25-OH-D3, phosphorus, serum and seminal calcium, total antioxidant capacity, the total testosterone/luteinizing hormone ratio, and both total and progressive sperm motility. Furthermore, it caused a notable decrease in serum and seminal malondialdehyde as well as serum parathyroid hormone in comparison to the baseline and placebo groups. However, it did not produce significant effects on body weight, body mass index, waist circumference, body fat, 8-hydroxy-2-deoxyguanosine, DNA fragmentation index, serum osteocalcin, luteinizing hormone, follicle-stimulating hormone, total testosterone, estradiol, sex hormone-binding globulin, prolactin, total testosterone/estradiol ratio, semen volume, sperm count, and normal sperm morphology. Conclusion: VD3 effectively improves infertility in men with idiopathic asthenospermia with serum 25-OH-D3 < 30 ng/ml by reducing oxidative stress and increasing total and progressive sperm motility. Keywords: Vitamin D3, Oxidative stress, Idiopathic asthenospermia, Sperm quality, Sex hormones. Registration ID in IRCT: IRCT20151128025274N4 The original full text of this abstract has been published: Maghsoumi-Norouzabad L, Zare Javid A, Mansoori A, Dadfar M, Serajian A. Vitamin D3 supplementation effects on spermatogram and oxidative stress biomarkers in asthenozoospermia infertile men: A randomized, triple-blind, placebo-controlled clinical trial. Reprod Sci 2022; 29: 823-835. Doi: 10.1007/s43032-021-00769-y. Maghsoumi-Norouzabad L, Zare Javid A, Mansoori A, Dadfar M, Serajian A. The effects of vitamin D3 supplementation on spermatogram and endocrine factors in asthenozoospermia infertile men: A randomized, triple blind, placebo-controlled clinical trial. Reprod Biol Endocrinol 2021; 19: 102. Doi: 10.1186/s12958-021-00789-y. O-11 Impact of pentoxifylline treatment on embryo morphokinetic using a time-lapse imaging system: A sibling oocyte study Mahaldashtian M1, Khalili MA1, Agharahimi A1, Mangoli E1, Palmerini MG2, Nottola SA3, Macchiarelli G3, Woodward B4. Research and Clinical Center for Infertility, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Department of Life, Health and Environmental Sciences, University of L’Aquila, L’Aquila, Italy. Department of Human Anatomy, Histology, Forensic Medicine and Orthopedics, Sapienza University of Rome, Rome, Italy. X&Y Fertility, Leicester, UK. Email: khalili59@hotmail.com Background: Pentoxifylline is one of the motility enhances in Andrology field that can be used for increase sperm motility in azoospermic samples. Objective: The aim of this research was to evaluate the influence of pentoxifylline (PTX) on in vitro embryo morphokinetics and clinical results by means of non-invasive time lapse monitoring system. Materials and Methods: This prospective non-blind sibling oocyte study comprised a total of 57 non-obstructive azoospermia men, with a mean age of 36.38 ± 6.99. This study was done at Yazd Reproductive Sciences Institute, Yazd, Iran from April 2021 to 2022, approved. All individuals gave informed consent to participate in the study. Inclusion criteria were NOA peoples younger than 50 yr with female partners less than 40 yr old having at least 4 mature oocytes, with no infertility problems. Exclusion criteria included HIV/HPV positive peoples, oocyte donation cycles and cycles with missing key data. Half of the mature oocytes from each individual were injected with PTX-treated sperm (3.6 Mm PTX, 30 min, 37C) as PTX group and the remaining half was injected with non-treated sperm as control group. Embryo morphokinetics were evaluated by means of time lapse monitoring system. Fertilization was assessed 16 hr after insemination, and embryo transfer was done on day 3 post-injection. Chemical and clinical pregnancies were assessed 2, and 7 wk after embryo transfer, respectively. Results: In the control group, 250 metaphase II oocytes were injected, 127 oocytes were fertilized, and 111 embryos were formed. In the PTX group, however, 247 metaphase II oocytes were injected, 158 oocytes were fertilized, and total of 147 embryos were formed. There were significant differences in the number of 2 pronucleus formation, fertilization rate and embryo formation between the groups (p < 0.05). Embryos from the PTX group had a significantly faster rate for time pronucleus fading and time to reach the 2- and 4-cell stages (p < 0.05). The results of pregnancies were similar between the groups. Conclusion: PTX affect embryo morphokinetic and increased the speed of cell divisions without any adverse effects on cleavage patterns and pregnancy outcome. Keywords: Pentoxifylline, Morphokinetics, Non-obstructive azoospermia, Time-lapse imaging. Registration ID in IRCT: IRCT20200705048020N1 O-12 Assesment the cryopreservation effect of pentoxifylline on premeiotic and postmeiotic marksers after transplantation of frozen-thawed spermatogonial stem cell to azoospermic mouse model caused by torsion Malekzadeh M, Homayoun M. Department of Anatomy, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran. Email: mehrnoush.malekzadeh@med.mui.ac.ir Background: Spermatogonial stem cells (SSCs) play a pivotal role in sustaining spermatogenesis and male fertility. Cryopreservation of SSCs is essential for fertility preservation, yet optimizing protocols to maintain their functionality post-thawing remains a challenge. This study investigates the cryoprotective potential of pentoxifylline (PTX) in preserving SSC viability and differentiation capacity after transplantation into an azoospermic mouse model. Objective: To evaluate the effects of PTX supplementation in cryopreservation media on the proliferation and differentiation of SSCs following freeze-thaw cycles and transplantation. Materials and Methods: This was an experimental study using an in vivo azoospermia mouse model to evaluate the effects of PTX on cryopreserved SSCs post-transplantation. SSCs were isolated purity was confirmed by surface markers (α6-integrin, β1-integrin, ID4) and divided into 4 experimental groups (n = 6/each): fresh SSCs, fresh SSCs treated with PTX, SSCs cryopreserved in basal medium, and SSCs cryopreserved with 10 mM PTX. These cells were transplanted into azoospermic mice induced by testicular torsion. After eight weeks, recipient testes were analyzed for SSC proliferation (via MVH and ID4 markers) and differentiation (using c-Kit, SCP3, Tnp1, Tnp2, and Prm1 markers) by immunohistochemistry and Western blot and real-time polymerase chain reaction. Results: Flow cytometry and morphological assessments confirmed successful SSC enrichment, evidenced by colony-forming ability and expression of ID4, α6-integrin, and β1-integrin. PTX-treated cryopreserved SSCs exhibited superior proliferative (Ddx4 and C-Kit proteins) and differentiative (ID4 and Sycp3 Protein) potential compared to cryopreservation group (p < 0.0001). There was a significant increase in the expression of Tnp1, Tnp2, and Prm1 genes in the cryopreservation group with PTX compared to the cryopreservation group (p < 0.0001). Transplanted SSCs colonized seminiferous tubules and restored spermatogenesis, yielding mature sperm. Conclusion: The addition of 10 mM PTX to cryopreservation media significantly enhances SSC recovery and functionality post-thawing, supporting its potential use in fertility restoration. Further studies are warranted to validate long-term safety and clinical applicability. Keywords: Male infertility, Cryopreservation, Spermatogonial stem cells, Transplantation, Antioxidant, Pentoxifylline. The original full text of this abstract has been published: Malekzadeh M, Takzaree N, Toolee H, Kazemzadeh Sh, Khanmohammadi N, Solhjoo S,·et al. Cryoprotective effect of pentoxifylline on spermatogonial stem cell during transplantation into azoospermic torsion mouse model: An experimental study. Reprod Sci 2022; 29: 526-539. Doi: 10.1007/s43032-021-00729-6. O-13 Apoptotic genes expression for assessment of radioprotective effect of omeprazole against testicular damage induced by ionizing radiation in mice Ranjbar Fakhrabadi S1, Javid A1, Montazeri F2, Biabani-Ardakani J3, Rezaei-Pandari M3. Department of Biological Sciences, Faculty of Engineering and Science, Science and Arts University, Yazd, Iran. Abortion Research Centre, Yazd Reproductive Sciences Institute, Yazd, Iran. Biotechnology Research Center, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Email: javadbiabani@ssu.ac.ir Background: Since the discovery of cysteine's radioprotective effect in 1949, extensive research has sought other radioprotective compounds. Evaluating drugs with known pharmacokinetics offers a quick path to clinical solutions. Omeprazole's antioxidant and anti-inflammatory activities suggest its potential radioprotective effects. Similar compounds, such as atorvastatin and L-carnitine, have shown efficacy in reducing oxidative stress and inflammation. Objective: This study aims to evaluate the radioprotective effects of omeprazole on testicular damage induced by ionizing radiation in mice by assessing apoptotic gene expression (BAX, BCl2). Materials and Methods: In this experimental study, 36 adult male Syrian mice (6-8 wk old, 30-35 gr) were randomly divided into 6 groups (n= 6/each) and acclimatized for 1 wk under standard conditions (12-hr light/dark cycles, 26-28°C, 50 ± 10% humidity). The groups were: group 1 (control): mice received 0.5% carboxymethyl cellulose containing 0.9% sodium chloride. Group 2 (radiation): mice were only exposed to total body radiation with a single dose of 6 Gy with a LINAC-X-ray accelerator. Group 3 (omeprazole [30 mg/kg]): mice received 30 mg/kg daily via gavage for 7 days. Group 4 (omeprazole [50 mg/kg]): mice received 50 mg/kg daily via gavage for 7 days. Group 5 (radiation + omeprazole [30 mg/kg]): mice received 30 mg/kg omeprazole daily via gavage for 7 days before 6 Gy whole-body irradiation. Group 6 (radiation + omeprazole [50 mg/kg]): mice received 50 mg/kg omeprazole daily via gavage for 7 days before 6 Gy whole-body irradiation. Body weights were measured at the start and end of the study. On day 8 (one day after the final dose), groups 2, 5, and 6 were irradiated and sacrificed on day 9 of the study (n = 3/each) and on day 15 of the study (n = 3/each). The tissues samples were collected post-euthanasia and preserved in RNA later solution, subsequently stored at -80°C. Total RNA extraction was achieved using the TRIzol reagent. Post-extraction, complementary DNA synthesis was performed to conduct the subsequent quantitative polymerase chain reaction analysis. Real-time quantitative polymerase chain reaction was employed to analyze the expression levels of specific genes associated with apoptosis including BAX and BCl2. At the same time, GAPDH served as an internal control for normalization. Results: Radiation significantly increased BAX and decreased BCl2 gene expression, indicating enhanced apoptosis. Omeprazole treatment, especially at 50 mg/kg, mitigated radiation-induced changes in gene expression. The combination of radiation and omeprazole resulted in lower (higher) BAX (BCl2) expressions compared to radiation alone, suggesting potential protective effects. Conclusion: Omeprazole shows promise as a radioprotective agent, notably in reducing radiation-induced apoptosis. Higher doses of omeprazole (50 mg/kg) were more effective in mitigating adverse gene expression changes caused by radiation. These findings support further investigation of omeprazole for clinical radioprotection applications. Keywords: Omeprazole, Apoptosis, Gene expression, Radiation protection. O-14 Advancing in vitro spermatogenesis: The role of hyaluronic acid-alginate and soft agarose in testicular tissue engineering Rashki Ghaleno L1, Shahverdi A1, Rezazadeh Valojerdi M1, 2. Department of Embryology, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran. Department of Anatomy, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran. Email: mr_valojerdi@yahoo.com Background: Cancer treatments for prepubertal boys, such as testicular radiation therapy and chemotherapy, carry a significant risk of adversely impacting fertility. Objective: This study involved the culture of testicular cells and tissue utilizing natural composites in both 2-dimensional and 3-dimensional (3D) formats, thereby enhancing both methodologies. Materials and Methods: This experimental study was conducted in 2 phases in Royan institute, Tehran Iran. First, biomaterials containing 0.5% hyaluronic acid, 1% alginate, 2.5 mg/ml collagen, and produced 25 mg/ml decellularized extracellular matrix from six Ram testicles were utilized to create composites. hyaluronic acid-alginate (HA-Alg) was chosen as a superior composite after 14 days of 3D culture of 5 days post-partum (dpp) mouse testicular cells because of the larger quantity and size of the organoids that were formed. Subsequently, cell culture was conducted using HA-Alg for 14 days, which was later prolonged by an additional 28 days. Morphology and gene expression were analyzed employing suitable techniques. During the second phase, testicular tissues from neonate mice were positioned on 1.5% agarose, following conventional agarose (C.AG) methods, alongside soft hydrogel layers in a soft agarose culture system, which comprised 0.35% agarose (S.AG), 1% alginate (S.AL), and a combination of 0.5% hyaluronic acid and 1% alginate (S.H-AL). This research examined histological aspects, and assessed the expression of genes associated with spermatogenesis. Results: On day 14, histology and immunostaining tests demonstrated the presence of hepatocyte-like cells (HLCs) and albumin production, indicating HLC functionality. The gene expression confirmed the expression of angiogenesis markers (p = 0.006). Following a 28-day culture period, testicular cells at 5 dpp differentiated into erythrocytes and hepatic-like cells, while a limited number of organoids exhibited characteristics of renal cells. In the second phase, on day 28, the total number of tubules in the C.AG and S.AG groups was significantly greater than in the S.H-AL group (p = 0.003). The interstitial area demonstrated a notable increase from day 5-28 across all groups (p = 0.021), with S.AG and S.AL presenting larger areas than C.AG (p = 0.045). Histological evaluation of cultured tissues demonstrated a significantly greater presence of spermatogonia, spermatocytes, and round spermatids in the S.AG group relative to the other groups (p = 0.038) In contrast, the S.AL group predominantly exhibited tubules containing only Sertoli cells. Gene expression data revealed significantly elevated levels of synaptonemal complex protein 3 and transition protein 1 in the S.AG group relative to the C.AG and S.AL groups (p = 0.008). Conclusion: The HA-Alg composite did not facilitate spermatogenesis in the 3D culture of mouse testicular cells; however, it exhibited an unexpected capacity to promote the differentiation of neonate mouse testicular cells into HLC, erythrocytes, and various other cell lineages. The second stage confirmed the effectiveness of S.AG for organ culture of testis tissues and enhanced in vitro spermatogenesis compared to C.AG and promotes the differentiation of SSC into round spermatids. Keywords: Spermatogenesis, Organoids, Cell culture, Tissue culture. O-15 Assessing the needs of sexual health and designing an educational package for women with breast cancer in reproductive age Seyyedzadeh N, Moghaddam-Banaem L. Department of Reproductive Health and Midwifery, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran. Email: moghaddamb@modares.ac.ir Background: Breast cancer is the most common cancer in women, with 1.38 million new cases yearly. It accounts for 30% of new cancers and ranks second in cancer-related deaths. Iranian women face earlier onset, about a decade sooner than in developed countries. While treatments improve survival, they often cause lasting physical and psychological effects, including sexual health challenges, underscoring the need for specialized education for survivors. Objective: The present study was designed to develop a sexual health education package, with impact on sexual quality of life, sexual function, and marital satisfaction in the survivors of breast cancer. Materials and Methods: This mixed-method study was conducted in Tehran, in 2022 in 2 phases: a qualitative study with 18 participants, a semi-experimental study with 37 participants. In the first phase a qualitative study was performed with directed content analysis, based on Woods' Gendering theory, then a sexual health education booklet and an educational package for breast cancer survivors were developed. The second phase involved the implementation of the sexual health education package in a single group of 37 breast cancer survivors, conducted over three weeks, with sessions twice a week virtually, through the WhatsApp social media platform for individual participants. The study outcomes measured online before, immediately after, and three months after the intervention, were the components of three questionnaires: the female sexual quality of life questionnaire, the female sexual function index, and the Enrich marital satisfaction scale (35 questions). Results: At the conclusion of the qualitative phase, a matrix table for sexual health was developed for breast cancer survivors using Woods' Gendering theory, identifying 3 main themes: sexual self-concept, sexual function, and sexual relations. The analysis resulted in 11 categories, 31 sub-categories, 78 axial codes, and 285 initial codes. An educational booklet for survivors and a guide for educators were produced. An electronic content was also prepared. In the semi-experimental phase, significant improvements were observed in sexual quality of life immediately, and 3 months after intervention (p = 0.028, and 0.036 respectively), sexual desire (p = 0.041), and satisfaction (p = 0.026), and ideal distortion immediately, and 3 months after intervention (p = 0.009, and 0.008 respectively). Changes in other areas were not significant. Conclusion: In the present study a sexual health education package for breast cancer survivors was developed and implemented, which had a statistically significant impact on sexual quality of life, sexual function, and marital satisfaction; however, the clinical significance of these effects are still unknown. Thus, further combined or multifaceted interventions aimed at comprehensive sexual health improvement in these women seem necessary.  Keywords: Sexual health, Education, Breast cancer, Reproductive age. O-16 Adipose mesenchymal stem cell conditioned medium enhances ovarian function in rats with polycystic ovary syndrome: A focus on epigenetic modifiers Shafiei G1, Saheli M2, Ganjalikhan-hakemi S2, Haghpanah T2, Nematollahi-Mahani SN2, 3. Anatomical Sciences Research Center, Institute for Basic Sciences, Kashan University of Medical Sciences, Kashan, Iran. Anatomical Sciences Department, Afzalipour School of Medicine, Kerman University of Medical Sciences, Kerman, Iran. Physiology Research Center, Institute of Neuropharmacology, Kerman University of Medical Sciences, Kerman, Iran. Email: thaghpanah1984@gmail.com; nnematollahi@kmu.ac.ir Background: Polycystic ovary syndrome (PCOS) is a multifaceted condition characterized by a range of epigenetic influences. Recent studies have highlighted the regenerative potential of adipose-derived mesenchymal stem cells (ASCs) and their conditioned medium (ASC-CM) in promoting tissue repair. Objective: The present study aimed to evaluate the effects of ASCs and ASC-CM on epigenetic regulatory mechanisms, steroidogenic activity, and folliculogenesis in a rat model of PCOS induced by letrozole. Materials and Methods: In this experimental study, 60 adult female Wistar rats (8 wk, 200 ± 20 gr) were randomly assigned to receive either 1% carboxymethyl cellulose (CMC group, n = 10) and 1 mg/kg letrozole orally for 21 days (PCOS group, n = 50). On day 22, the PCOS group was divided into four subgroups (n = 10/each): 1) ASC group, receiving 2 × 106 ASCs suspended in 20 µl culture medium; 2) ASC-CM group, treated with 20 µl of ASC-CM; 3) control (CTRL) group, receiving 20 µl of culture medium; and 4) sham group, treated with 20 µl of normal saline. All transplantations were occurred on 22th day and were performed via direct injection into the ovaries. 4 wk post-treatment, an oral glucose tolerance test was conducted to confirm the PCOS model, and folliculogenesis was evaluated alongside the gene expression of DNA methyltransferases (DNMT1, 3A, and 3B), as well as histone deacetylases (HDAC1 and HDAC2) using real-time polymerase chain reaction. The expression of estrogen receptors α and β in the ovaries was assessed through real-time polymerase chain reaction and Western blotting, and serum estradiol levels were measured. Additionally, the levels of 5-methyl-cytosine and 5-hydroxymethyl-cytosine were determined by immunohistochemistry. Physical parameters, including body weight and estrous cycle patterns, were recorded. Results: PCOS-induced rats in the sham and CTRL groups exhibited reproductive dysfunctions, characterized by irregular estrous cycles, increased ovarian dimensions, elevated body weight, and altered blood glucose levels. These abnormalities were significantly improved, particularly in the ASC-CM group. ASC-CM treatment was more effective than ASC in enhancing the expression of DNMT1, 3A, and 3B (p = 0.050), as well as HDAC1 (p = 0.006) and HDAC2 (p = 0.050) genes and estrogen receptor α and β at both the gene and protein levels. Serum estradiol levels and the amount of 5-methyl-cytosine were significantly increased in the ASC-CM group. Furthermore, a notable reduction in the number of primary and preantral follicles was observed in the ASC-CM group compared to the sham (p ˂ 0.0001), and CTRL (p = 0.000) groups. Conclusion: Treatment of PCOS rats with ASC and ASC-CM can improve folliculogenesis, steroidal secretion and function. ASC-CM administration was more effective than ASC administration. Keywords: Adipose-derived mesenchymal stem cells, DNA methylation, Histone deacetylases, Estrogen receptor, Polycystic ovary syndrome. O-17 Evaluation of fibroblast growth factor (FGF) 1, FGF2, and FGF13 gene expression following endometrial scratching in women with unexplained repeated implantation failure: A randomized controlled trial Aghajanpour S1, Hosseini E2, Zandieh Z3, Amjadi FS3, Aflatoonian R1. Department of Endocrinology and Female Infertility, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran. Department of Obstetrics and Gynecology, Mousavi Hospital, School of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran. Department of Anatomy, School of Medicine, Iran University of Medical Sciences, Tehran, Iran. Email: Amjadi.bh@gmail.com; r.aflatoonian@gmail.com Background: Angiogenesis plays a vital role in implantation, decidualization, and placentation. Fibroblast growth factors (FGFs) significantly impact cellular processes, including angiogenesis. Inadequate angiogenesis during the implantation window may impair endometrial receptivity, leading to unexplained repeated implantation failure (uRIF). Endometrial scratching (ES) has been suggested as a potential method to enhance implantation rates in uRIF. This study investigated the expression of fibroblast growth factor 1 (FGF1), FGF2, and FGF13 genes, which contribute to endometrial angiogenesis, following ES. Objective: Due to poor vascularization in women with uRIF, this study investigated the endometrial angiogenic response to ES by evaluating FGF1, FGF2, and FGF13 gene expression. Materials and Methods: This study received ethical approval from Iran University of Medical Sciences, Tehran, Iran and endometrial tissue samples were collected from women at Laleh hospital in Tehran, Iran, between June 2021 and January 2023. In this double-blind randomized clinical trial, 20 infertile women with uRIF were divided into 2 groups: one underwent ES in the follicular phase, while the other did not. Gene expression of FGF1, FGF2, and FGF13 in secretory-phase endometrial biopsy samples was analyzed via quantitative polymerase chain reaction. Results: The findings of this study revealed a significant increase in the relative expression of FGF1 (p = 0.001), FGF2 (p = 0.041), and FGF13 (p = 0.003) in the intervention group following ES, compared to the control group. Conclusion: FGF1, FGF2, and FGF13 are members of the FGFs family, which plays a crucial role in angiogenesis during the window of implantation, helping to prepare the endometrium for embryo implantation. On the other hand, it has been demonstrated that the reduction of these genes leads to insufficient angiogenesis, potentially resulting in failure of embryo implantation. It has been determined that embryo implantation does not occur in RIF women, possibly due to inadequate angiogenesis. The results of the present study indicated that ES induced significant alterations in the expression of the FGF1, FGF2, and FGF13 genes and, as a result, may have improved endometrial angiogenesis.  Keywords: Angiogenesis, Fibroblast growth factor, Endometrium. Registration ID in IRCT: IRCT20210316050723N1 O-18 The role of leukemia inhibitory factor on expression of genes related to angiogenesis in recurrent abortion: A mice model study Allahyari Z1, Zare F2, Nikoonahad N3. Department of Molecular Genetics, Faculty of Sciences, Science and Arts University, Yazd, Iran. Reproducive Immunology Research Center, Shahid Sadoudghi University of Medical Sciences, Yazd, Iran. Biology Department, Faculty of Sciences, Science and Arts University Yazd, Iran. Email: z.allahyari4450@gmail.com Background: Recurrent miscarriage (RM) is a primary pregnancy complication that affects approximately 1-3% of pregnancies. Multiple factors contribute to RM. Leukemia inhibitory factor (LIF), a cytokine belonging to the interleukin-6 family, plays a critical role in various biological processes, particularly during pregnancy and fetal development. Objective: This study aimed to investigate the role of LIF on the expression of angiogenesis-related genes -fibroblast growth factor (FGF), angiopoietin-1 (ANG1), platelet derived growth factor (PDGF), transforming growth factor-beta (TGF-β) and vascular endothelial growth factor (VEGF)- in a mouse model of RM. Materials and Methods: Female CBA/J mice mated with DBA/2J males were used to establish a RM model. The mice were randomly divided into 3 groups: normal group: CBA/J females mated with Balb/c males without any injection. RM control group: CBA/J × DBA/2J mice receiving a PBS injection, and LIF-treated RM group: CBA/J × DBA/2J mice injected with LIF. After confirming pregnancy by the presence of a vaginal plug, mice were sacrificed on days 4, 7, and 14 of gestation. Uterine and placental tissues were collected for analysis of angiogenesis-related gene expression (VEGF, PDGF, ANG1, FGF, and TGF-β) using real-time polymerase chain reaction. Results: On gestational days 4 and 7, no significant differences in gene expression were observed between the groups. However, by day 14, the expression of all target genes was increased in the LIF-treated RM group compared to the other groups. This increase was statistically significant for VEGF and TGF-β (p = 0.03 and p = 0.04, respectively). A similar pattern was observed in placental tissues, with higher expression levels in the LIF-treated group, although these changes were not statistically significant. Correlation analysis between uterine and placental gene expression on day 14 showed no significant associations. Conclusion: The findings suggest that LIF administration in an RM mouse model enhances the expression of angiogenic factors, particularly on day 14 of pregnancy. The significant upregulation of key genes such as VEGF implies a potential role for LIF in supporting fetal development by promoting angiogenesis. These results reinforce the known importance of LIF in oocyte maturation, embryo implantation, and embryonic development. Keywords: Leukemia inhibitory factor, Recurrent miscarriage, Vascular endothelial growth factor. O-19 Stemness properties of amniotic fluid mesenchymal stem cells during proliferative senescence Azad FS1, 2, Zare E2, 3, Hoseini SM4, Montazeri F2. Department of Medical Genetics, School of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Abortion Research Center, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Department of Medical Genetics and Molecular Medicine, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran. Biotechnology Research Center, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Email: marjan.montazeri@gmail.com Background: Amniotic fluid-derived mesenchymal stem cells (AF-MSCs) have garnered significant attention in regenerative medicine due to their unique properties, such as multilineage differentiation potential and self-renewal ability. AF-MSCs are susceptible to senescence, a biological process characterized by a decline in cell division and function. Stemness attributes, such as self-renewal capacity and differentiation potential, are critical for the efficacy of MSCs in the regeneration. As AF-MSCs undergo senescence, there is often a measurable decrease in these properties, influencing their overall functionality in clinical applications. MYB proto-oncogene protein 2 (B-MYB or MYBL2) is known as one of the genes involved in senescence, and its relation with some stemness genes such as Thy-1 cell surface antigen (Thy-1), Mast/Stem cell growth factor receptor (C-Kit), and fibroblast growth factor (FGF) were investigated. Objective: The main goal of this study was to evaluate the expression level of the B-MYB gene as a marker of senescence in AF-MSCs compared to stemness genes in different phases of growth. Materials and Methods: This in vitro experimental study aimed to evaluate senescence and stemness-related markers in AF-MSCs. AF-MSCs were isolated from seven pregnant women via amniocentesis at the Yazd Reproductive Sciences Institute, Yazd, Iran. Homogeneity was confirmed by flow cytometry. Senescence was assessed using beta-galactosidase activity through X-gal staining. Results: The B-MYB gene as a marker of senescence exhibited up-regulation in senescent AF-MSCs compared to those in the proliferative stage. Additionally, molecular analysis revealed a significant increase in the expression levels of genes as a marker of stemness (Thy-1, C-Kit, and FGF) during senescence. Expression levels of stemness-related genes Thy-1 (p = 0.0135), C-Kit (p = 0.0351), and FGF (p = 0.0397) were analyzed. Total RNA was extracted using TRIzol, cDNA was synthesized using the first strand cDNA synthesis kit (Thermo Scientific), and quantitative polymerase chain reaction was performed with GAPDH as the reference gene. Conclusion: This study reveals that senescence in AF-MSCs is accompanied by increased expression of B-MYB and key stemness-related genes such as Thy-1, C-Kit, and FGF. These findings suggest that senescence does not necessarily lead to a loss of stemness and may even preserve or enhance certain stem cell traits. Targeting the interplay between senescence and stemness could improve the therapeutic potential of AF-MSCs in regenerative medicine. Further research is needed to clarify the mechanisms involved. Key words: Mesenchymal stem cells, Amniotic fluid, Cellular senescence, B-MYB gene expression, Stemness genes. O-20 Evaluation of NLRP3 and Caspase-1 gene expression in endometrial tissue obtained during the window of implantation in women with secondary infertility and isthmocele Azadegan M1, Ahani Nahayati D2, Jamshidian F1, Aghajanpour S3, Aflatoonian R3, Hafezi M3. Department of Biology, East Tehran Branch, Islamic Azad University, Tehran, Iran. Department of Genetics, Faculty of Advanced Science and Technology, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran. Department of Endocrinology and Female Infertility, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran. Email: azadmobin96@gmail.com; maryamhafezi90@yahoo.com Background: Embryo implantation failure is a significant challenge for infertility patients, influenced by multiple factors, including immune cell activity and inflammation. Endometrial immune cells strongly express the NLRP3 inflammasome, which regulates Caspase-1 activation and pro-inflammatory cytokine secretion (IL-1β, IL-18). Excessive activation of this pathway may disrupt endometrial receptivity, leading to infertility. Chronic inflammation caused by blood accumulation in the cesarean scar area could be one of the possible factors contributing to a decreased implantation rate due to isthmocele. Therefore, isthmocele, a myometrial scar from cesarean sections, is frequently linked to secondary infertility. While its exact role in subfertility remains unclear, it likely affects embryo implantation and reduces fertility. Objective: Due to the potential presence of inflammation at the cesarean scar site, this study examined the expression levels of NLRP3 and Caspase-1 genes in the endometrium of women with isthmocele. Materials and Methods: This study received ethical approval from the Royan Institute Committee, Tehran, Iran and endometrial tissue sampling was conducted between 2023 and 2024. In this case-control study, 10 infertile women with isthmocele grade 3 (case group) and 10 fertile women (control group) participated. Endometrial biopsy during the window of implantation was done for both groups. NLRP3 and Caspase-1 mRNA gene expression were assessed using quantitative polymerase chain reaction. Results: Using quantitative polymerase chain reaction, it was shown that NLRP3 and Caspase-1 (p ≤ 0.051) were expressed differently in the endometrium of the case group compared to the control group. Conclusion: Therefore, isthmocele may be associated with uterine inflammation because of the excessive expression of the NLRP3 inflammasome (NLRP3 and Caspase-1); hence, it can create an unfavourable environment for embryonic implantation. Keywords: NLRP3 inflammasome, Infertility, Endometrium. O-21 Impact of abnormal semen parameters on total oxidative status and DNA/chromatin integrity Imani M1, Vahedi Raad M2, Afsari M1, Fesahat F1. Reproductive Immunology Research Center, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Department of Anatomical Sciences, Shiraz University of Medical Sciences, Shiraz, Iran. Email: farzaneh.fesahat@gmail.com Background: Male infertility is a significant health concern, impacting approximately 7% of the male population worldwide. Among various contributing factors, oxidative stress has emerged as a key element in the pathogenesis of impaired fertility. It can influence sperm function by damaging cellular structures, including DNA and chromatin, thereby compromising fertilizing capacity. Objective: This study aimed to compare the total antioxidant status and DNA/chromatin integrity in semen samples from infertile men with different abnormal semen profiles against fertile men with normal semen parameters. Materials and Methods: In this cross-sectional analysis, semen samples were obtained from 81 men and categorized into five groups: normozoospermic fertile controls (n = 22) and four infertile subgroups: teratozoospermic (n = 15), asthenoteratozoospermic (n = 13), oligoasthenoteratozoospermic (n = 13), and azoospermic (n = 18). Seminal plasma total antioxidant capacity and total oxidant status were measured using enzyme-linked immunosorbent assay methods. Chromatin and DNA integrity were assessed via chromomycin A3 and toluidine blue staining. All participants were < 40 yr of age and had a body mass index of ≤ 25. Control group participants had normal semen parameters, at least one child in the past 2 yr, no smoking, no varicocele, no medication use. Experimental group inclusion required similar criteria, excluding diabetes and infections. All participants were excluded if they had genetic disorders, any infections or inflammatory diseases in the reproductive tract. Results: The mean age of participants was 33.78 ± 5.29 yr, and the mean body mass index was 24.29 ± 3.24, with no significant differences among the groups (p ≥ 0.05). Sperm concentration and morphology were significantly higher in the control group compared to the infertile groups (p < 0.001). Morphological parameters were particularly poor in the teratozoospermic group relative to the oligoasthenoteratozoospermic group (p < 0.01). The asthenoteratozoospermic and oligoasthenoteratozoospermic groups demonstrated significantly higher rates of immotile sperm and lower motility compared to controls (p < 0.001). Chromatin assessments revealed significantly elevated proportions of chromomycin A3+ and toluidine blue+ spermatozoa in all infertile groups compared to the control group (p < 0.001), indicating compromised chromatin structure. Total antioxidant capacity levels were substantially reduced in the infertile groups, while total antioxidant capacity and total oxidant status concentrations were significantly elevated (p < 0.05). The oxidative stress index remained balanced in the control group (0.78 ± 0.09), but it was markedly higher in the experimental groups (2.77 ± 0.41; p < 0.001). Negative correlations were observed between key semen parameters (concentration, motility, morphology) and chromatin damage (chromomycin A3+, toluidine blue+) as well as total antioxidant capacity and total oxidant status levels. In contrast, total antioxidant capacity showed a strong positive association with these semen quality indicators. Conclusion: The findings suggest that even a single abnormal semen parameter, such as teratozoospermia, can significantly disrupt oxidative balance and damage DNA/chromatin structure in sperm cells. Monitoring oxidative stress biomarkers alongside DNA integrity assessments could offer valuable insights into male infertility, especially in patients presenting with abnormal morphology. Keywords: Chromatin, DNA fragmentation, Male infertility, Oxidative stress, Spermatozoa. The original full text of this abstract has been published: Imani M, Raad MV, Afsari M, Fesahat F. Effects of adverse semen parameters on total oxidation status and DNA/chromatin integrity. Afr J Urol 2023; 44: 1-7. Doi: 10.1186/s12301-023-00377-z. O-22 Evaluating chromosomal anomalies and variants in Iranian couples with history of recurrent pregnancy loss Iravani F, Namjoo Kh, Ghasemi N, Montazeri F, Kalantar SM. Department of Medical Genetics, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Abortion Research Center, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Email: smkyzd@gmail.com Background: Chromosomal polymorphisms refer to variations in the chromosomal heterochromatin regions and their higher prevalence in infertile cases suggests they may have implications for reproductive health. Objective: To determine different types of chromosomal anomalies and variants in couples with a history of recurrent pregnancy loss (RPL). Materials and Methods: This retrospective study analyzed 7,178 infertile couples referred to the Yazd Reproductive Sciences Institute cytogenetic lab (Yazd, Iran) for comprehensive cytogenetic screening from 2016-2024, and 3,073 cases with a history of RPL were included in the analysis. Cytogenetic maps were assessed using GTG banded metaphase karyotyping on peripheral blood lymphocyte cultures. Chromosomal anomalies and variants, sex distribution and age dependency were compared across three RPL abnormal karyotype groups, including: < 3 miscarriages, between 3-5, and > 5 miscarriages. Results: The assessment in the RPL group data demonstrated that out of a total of 3,073 RPL individuals, 277 (9.01%) cases displayed aberrations in their cytogenetic profile. This included 44 cases (15.88%) with structural aberrations, 16 cases (5.78%) with numerical abnormalities, 1 case (0.36%) with complex abnormality (≥ 2 aberrations), and 216 cases (77.98%) with heteromorphic variants. Among the RPL couples with chromosomal aberrations, men accounted for 56.32% of aberrations, indicating a skew towards male associations in RPL (p = 0.591). Age analysis revealed no significant correlation between maternal age and miscarriage frequency; average ages were 35.92, 35.58, and 32.67 yr across the (RPL < 3), (3 ≤ RPL ≤ 5), and (5 < RPL) groups (p = 0.148).  Conclusion: This study underscores the importance of comprehensive cytogenetic evaluations in RPL management. Additional research is required to elucidate the specific mechanisms through which chromosomal variations affect reproductive success.  Keywords: Infertility, Recurrent pregnancy loss, Chromosome aberrations, Genetic polymorphism. O-23 Destructive effects of superovulation on the quality of oocytes and developmental potential of embryos conceived by different assisted reproductive techniques Jahanbakhsh Asl E1, Gaffari Novin M2. Department of Yas Infertility Center, Shohada Hospital, Qom University of Medical Sciences, Qom, Iran. Department of Biology and Anatomical Sciences, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran. Email: e.jahanbakhsh@gmail.com Background: Embryonic and fetal development can be highly affected undoubtedly by the assisted reproductive technologies (ART). A wide range of destructive side effects of ovarian stimulation by gonadotropins as an integral part of most ART programs on reproductive indexes/parameters including oocyte and embryo quality and developmental potential of pre- and post-implantation embryos have been reported so far by recent studies. Exogenous gonadotrophins were identified among the one of environmental factors affecting epigenetic reprogramming and imprinting process in maturing oocytes and can potentially induce phenotypic defects in offspring. Objective: The first aim of this study was to compare the expression of 2 growth factor genes and 3 genes implicated in methylation modification during early developmentation in oocytes produced by superovulation and natural ovulation. The next aim was to compare the expression patterns of some candidate genes involved in embryonic development and imprinting process among embryos produced by different ART techniques.  Materials and Methods: A comparative study were done with a total of 180 MII oocytes produced by super and spontaneous ovulation obtained from at least 20 female B6D2F1 (C57BL/63DBA/2) strain mice (6-8 wk). 150 blastocyst-stage embryos were produced after in vitro culture of oocytes fertilized by somatic cell nuclear transfer (SCNT), intracytoplasmic sperm injection (ICSI), in vitro fertilization (IVF) and in vitro culture of in vivo fertilization (IVC) from at least 50 female and male B6D2F1 strain mice (6-8 wk of age). Blastocysts obtained from naturally mated female without gonadotrophin treatment were also used as controls. The mRNA expression patterns of candidate genes were accomplished using real time PCR. Results: The rates of cleavage to blastocyst stage formation were significantly different (p < 0.050) between superovulated and naturally ovulated oocytes in SCNT and ICSI-derived embryos. Significant decreasion (at p < 0.050 and p < 0.010) and destructive effect of superovulation on expression patterns of candidate genes were detected in 60 ooytes and at least 50 blastocyst stage embryos obtained by different methods. Conclusion: It was shown that superovulation affected both the evolution potential and Genetic characteristics of ART conceived embryos. Key words: ART, Superovulation, Epigenetics. The original full text of this abstract has been published: Jahanbakhsh Asl E, Salehi M, Ghaffari Novin M, Kato Y. Superovulation affects the gene expression patterns of mice oocytes and preimplantation embryos produced by different assisted reproductive technologies. Iran J Womens Health Reprod Sci 2018; 6: 444-451. Doi: 10.15296/ijwhr.2018.74. O-24 Investigating the expression level of N-methyl d-aspartate glutamate receptors gene and its correlation with sperm motility in asthenozoospermic men Abbasi F1, Momeni HR1, Etemadi T1, Mosayebi Gh2. Department of Biology, Faculty of Science, Arak University, Arak, Iran. Department of Biology, Faculty of Sciences, Arak University of Medical Sciences, Arak, Iran. Email: fatemehabbasi642@gmail.com Background: Asthenozoospermia which is characterized by reduced motility is a condition that affects male fertility. Decreased motility is associated with several factors such as oxidative stress, hormonal imbalance, and genetic disorders. The N-methyl d-aspartate glutamate receptors (NMDAR) are ligand-gated cation channels that cause calcium influx in nerve cells. According to immunocytochemistry data, NMDARs are present in the tail and midpiece of human sperm. Studies revealed that NMDAR agonists increase intracellular calcium and affect sperm motility in newts, and human sperm. Intracellular calcium is one of the crucial factors in the regulation of sperm function, especially sperm motility. Although the actual roles of NMDAR in human sperm function are unknown, their involvement in calcium influx can be associated with some parameters in human sperm that need calcium. Objective: This study was conducted to investigate the expression level of the NMDARs gene in asthenozoospermic men and its correlation with sperm motility for the first time. Materials and Methods: In this experimental study, sperm samples were collected from men referred to the Arak Educational, Cultural and Research Center, Arak, Iran. The subjects were divided into 2 groups: normal and asthenozoospermic. The expression level of the NMDAR gene in sperm samples in 30 normal men (control group) and 30 asthenozoospermic men was evaluated using quantitative reverse transcription polymerase chain reaction. In addition, the progressive motility of sperm in both groups was evaluated according to the World Health Organization guidelines and expressed as a percentage. Results: Our results revealed a decrease in the expression level of NMDARs gene in the sperm of asthenozoosperm men compared to the normal group (p < 0.05). In addition, Pearson's correlation coefficient showed a positive correlation between the expression of this gene and human sperm motility. Conclusions: Based on our results, sperm motility is associated with NMDAR gene expression in asthenozoospermic men. It can be concluded that NMDARs (as calcium channels) may be associated with reduced sperm motility in these men. Keywords: Human sperm, Asthenospermia, Sperm motility, NMDA receptors gene. O-25 Endometrial stromal cells-derived extracellular vesicles mediate bystander decidual reaction and modulate functional features of natural killer cells in a pregnancy-friendly manner Mousavi M1, Vanaki N1, Zarnani K2, Shokri F1, Razavi SA1, Zarnani AH1, 3. Department of Immunology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran. School of Biology, College of Sciences, University of Tehran, Tehran, Iran. Reproductive Immunology Research Center, Avicenna Research Institute, Academic Center for Education, Culture and Research (ACECR), Tehran, Iran. Email: zarnania@gmail.com Background: Decidualization, the process of endometrial stromal cell (EnSCs) differentiation by steroidal sex hormones, is crucial for blastocyst-uterine cross-talk, implantation, placental development and endometrial immune modulation. Defective decidualization is associated with reproductive failure. Despite research, the contribution of endometrial-secreted factors to decidualization remains unclear. Objective: Here, we investigated the role of EnSCs-derived extracellular vesicles (EVs) in promoting decidualization and regulating natural killer cell (NK) functions. Materials and Methods: In this experimental study, endometrial biopsies were obtained via hysteroscopy from 20 women aged 20-40 yr, in the luteal phase, who were referred to an IVF clinic. The study was conducted at the Immunology Department, Tehran University of Medical Sciences, Tehran, Iran between March 2021 and July 2024. Biopsies were performed to isolate EnSCs for downstream analysis. After confirming inclusion and applying exclusion criteria (including infections, autoimmune disorders, recent chemotherapy, corticosteroid or hormone therapy), EnSCs were isolated and characterized for the expression of mesenchymal (CD10, CD73, CD90), hematopoietic (CD34, CD45), cytoskeletal (cytokeratin/vimentin), proliferation (Ki67) and HLA-G markers using flow cytometry and immunostaining. Decidualization was induced in vitro and validated by measuring prolactin secretion and gene expression of prolactin and insulin-like growth factor binding protein 1. Amino acid metabolomics, glucose uptake and lactate production, and pro-inflamatory cytokine levels were assessed using liquid chromatography-tandem mass spectrometry, calorimetric assay, and enzyme-linked immunosorbent assay. EVs were isolated and characterized by expression of TSG101, CD63, and CD81 (western blot), ultrastructure (scanning electron microscopy), size and zeta-potential (dynamic light scattering). PKH26- labeled EVs uptake by EnSCs and NKs at different time points was monitored by fluorescent tracking. EVs derived from decidualized and undecidualized EnSCs at different intervals were tested alone or combined with decidualization inducers (cyclic adenosine monophosphate, medroxyprogesterone acetate, and 17β-Estradiol) to evaluate their effect on decidualization. NKs were isolated by negative selection and the effects of differentiated and undifferentiated EVs on marker expression, proliferation, and cytotoxicity against EnSCs and K562 cells by IL-15-primed NK cells were analyzed using flow cytometry, carboxyfluorescein succinimidyl ester staining, and Calcein-AM staining. Results: EnSCs showed mesenchymal and vimentin markers but lacked hematopoietic and cytokeratin markers. Decidualization reduced EnSCs proliferation and induced HLA-G expression after IFN-γ pre-treatment, altered amino acid metabolism (notably increased phenylalanine), and decreased glucose uptake and lactate production. EVs (average size 89.17 nm, zeta potential ~38.15 mV) were more abundantly produced by decidualized cells compared to undecidualized cells. EVs uptake peaked at 4 hr in EnSCs and 24 hr in NK cells. Decidualized EVs, unlike those from undifferentiated cells, enhanced decidualization (p < 0.0001). We found a negative correlation between the decidualization capacity of EnSCs and the production of IL-6 and IL-8. EVs derived from EnSC exerted no significant effect on NK cell proliferation or expression of CD16, CD107a, Perforin, Granzym A/B and IFN-γ. More importantly, however, they reduced the cytotoxic effect of NK cells on K562 and EnSCs cells (p = 0.015) and increased the frequency of CD56 bright NK cells (p = 0.007). Conclusion: This study reveals unprecedented evidence that EnSCs-derived EVs mediate bystander decidualization and modulate NK cell functions in a pregnancy-friendly manner. Keywords: Endometrium, Decidualization, Metabolomics, Extracellular vesicles, Natural killer cells. O-26 Exploring the expression profile of hsa_circ_0004712 as a biomarker for recurrent implantation failure in women who underwent in vitro fertilization Rezaee S, Babaei E. Department of Animal Biology, Faculty of Natural Sciences, University of Tabriz, Tabriz, Iran. Email: babaei2539@gmail.com Background: Recurrent implantation failure (RIF) is a significant challenge in assisted reproductive technologies, characterized by the inability to achieve successful implantation after multiple transfers of high-quality embryos during in vitro fertilization (IVF) cycles. IVF treatments are costly and often require multiple attempts to result in pregnancy, leading to financial strain, emotional distress, and psychological hardship for many couples. Despite ongoing research, the exact causes of RIF remain poorly understood, complicating the optimization of IVF outcomes. Emerging research suggests that non-coding RNAs (ncRNAs), especially circular RNAs (circRNAs), play vital roles in regulating implantation processes. CircRNAs are a subclass of ncRNAs with a unique covalently closed-loop structure, which provides stability and resistance to exonuclease degradation, making them ideal candidates for non-invasive biomarkers in biological samples such as blood, urine, and saliva. Objective: This study aimed to investigate the expression profile of circ_0004712 in the peripheral blood of women with RIF, comparing it to women who achieved a successful pregnancy following their first IVF attempt. Material and Methods: A total of 60 peripheral blood samples were collected from women undergoing IVF at Tabriz Valiasr hospital, Tabriz, Iran between June 20, 2024, and March 20, 2025. The study population consisted of 2 groups: 30 women with RIF and 30 women with successful implantation outcomes as controls. Real-time polymerase chain reaction was used to measure circ_0004712 expression levels in blood samples from both groups. Additionally, bioinformatics analysis was conducted to predict miRNAs targeted by validated circRNAs and to investigate circRNA-miRNA-mRNA interactions. The expression of PDE7B, the host gene of circ_0004712, was also analyzed to examine significant differences between the two groups. Results: The quatitative real-time polymerase chain reaction analysis revealed a significant difference in the expression levels of circ_0004712 between the RIF and control groups. Bioinformatics analysis also demonstrated significant differences in the expression of PDE7B, the host gene of circ_0004712, between the RIF and control groups. Conclusion: These results suggest that the dysregulated expression of circ_0004712 and its host gene PDE7B may play a role in the molecular pathways underlying implantation failure. Keywords: Recurrent implantation failure, Circular RNAs, circ_0004712, In vitro fertilization. O-27 Fabrication and characterization of polymer-based nano particles for gene delivery to zygote Torabi A1, Bagherzadeh MA2, Golestan Jahromi M3, Alipour M1, 3. Department of Biochemistry, School of Medicine, Jahrom University of Medical Sciences, Jahrom, Iran. School of Medicine, Jahrom University of Medical Sciences, Jahrom, Iran. Department of Advanced Medical Sciences and Technologies, School of Medicine, Jahrom University of Medical Sciences, Jahrom, Iran. Email: m.alipour@jums.ac.ir; Mohsen.alipoor2013@gmail.com Background: Today, gene delivery to animal zygotes for research and therapeutic purposes is of great importance, as researchers strive to engineer various genes in embryos to produce transgenic animal models of human diseases. However, one of the chalenges of gene transfer is the presence of multiple barriers, both inside and outside the cells. To date, various approaches, such as microinjection and the use of nanocarriers, have been employed to overcome these barriers. Among these approaches, and nanocarriers have demonstrated high efficiency in facilitating gene transfer to cell. Objective: In this research, we aim to fabricate and characterize polymer-DNA nano-complexes to facilitate the gene transfer process to mouse zygotes. Material and Methods: Initially, we isolated a gene reporter-harboring plasmid white concenteration of 200 ng and high purity. In the next step, DNA was complexed with a polymer to fabricate nanoparticles through a self-assembly process. Subsequently, the formation of these nanoparticles was evaluated using agarose gel electrophoresis, dynamic light scattering, and transmission electron microscopy analyses. Results: The results from gel electrophoresis demonstrated the successful binding of DNA to the nancarriers. More importantly, dynamic light scattering and transmission electron microscopy confirmed the formation of nano particles with a size of approximately 200 nm and a positive charge. The physicochemical characteristics of the nanocarrier are well-suited for gene delivery to zygotes, which will be prepared using in vitro fertilization methods. Conclusion: It appears that the results of this study could represent an effective step in facilitationg the production processes for animal models of human diseases. Keywords: Gene delivery, Nanocarrier, Animal model, Zygote. O-28 Distinguishing features of endometrial and menstrual blood stromal cells identified through decidualization profiling Vanaki N1, Tavangar B2, Darzi M2, Arefi S3, Mirzadegan E2, Mousavi M1, Shokri F1, Zarnani AH1, 4. Department of Immunology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran. Nanobiotechnology Research Center, Avicenna Research Institute, Academic Center for Education, Culture and Research (ACECR), Tehran, Iran. Reproductive Biotechnology Research Center, Avicenna Research Institute, ACECR, Tehran, Iran. Reproductive Immunology Research Center, Avicenna Research Institute, Academic Center for Education, Culture and Research (ACECR), Tehran, Iran. Email: zarnania@gmail.com; zarnania@sina.tums.ac.ir Background: Decidualization, the process of endometrial stromal cell (EnSCs) differentiation, is critical for embryo-endometrium cross-talk and fetal development, as well as the functionality of EnSCs. Although considered as a surrogate for and share many biological features with EnSCs, menstrual blood stromal cells (MenSCs) are a distinct population. Objective: Here, we investigated the potential link between EnSC and MenSC cell types in terms of decidualization capacity. Materials and Methods: An observational study was conducted to compare stromal cells isolated from human endometrial biopsies (n = 10) and menstrual blood (n = 20). Both cell types were characterized for mesenchymal stem cell markers and then subjected to in vitro decidualization using 2 famous protocols for 6 and 12 days. EnSC and MenSC sources were classified into 2 categories, well-decidualized (WD) and poor-decidualized (PD), based on their capacity to secrete prolactin, as a known and valid decidualization marker. The extent of decidualization as well as the impact of decidualization on senescence, inflammation, metabolome, and glycolysis intermediates, were compared before and after exposure to selected concentration of six senomorphics in all sources as well as WD and PD EnSCs and MenSCs. Results: Our data indicated that MenSCs have distinct decidualization kinetics compared to EnSCs with faster, limited and sustained capacity to decidualize for an extended period. By day 6 of decidualization, EnSCs exhibited metabolic changes comparable to those of MenSCs by day 3. Decidualization triggered significant differential alterations in glycolysis-associated metabolites, senescence, and interleukin-6 production in EnSCs and MenSCs especially in PD sources. This was also the case for EnSCs and MenSCs in general and PD and WD cells when they were treated with senomorphic agents. The timing of exposure to senomorphics significantly impacted decidualization outcomes, with treatment during decidualization exerted a negative impact on cell senescence. Of note, pretreatment with senomorphics increased senescence in WD EnSCs, while it exerted an opposite effect in PD EnSCs. Senomorphics shifted metabolome of PD EnSCs toward WD EnSCs. Conclusion: This is the first report notifying that EnSCs and MenSCs differ significantly in their decidualization potential, metabolome, senescence, and responses to senomorphics and provides clinical clues for using senomorphics in women with impaired decidualization and reproductive failure.  Keywords: Decidualization, Stromal cells, Endometrium, Menstrual blood, Senomorphics, Senescence. O-29 Immunomodulatory properties of amniotic fluid-derived mesenchymal stem cells over the lifespan Zare E1, 2, Azad FS2, 3, Montazeri F2, Hoseini SM4. Department of Medical Genetics and Molecular Medicine, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran. Abortion Research Center, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Department of Medical Genetics, School of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Biotechnology Research Center, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Email: sm.hoseini@gmail.com Background: Senescence, a biological process involving the irreversible arrest of cell division, significantly influences the properties of amniotic fluid-derived mesenchymal stem cells (AF-MSCs). These cells are widely studied in regenerative medicine due to their multipotent differentiation capacity and immunomodulatory abilities. However, as AF-MSCs undergo senescence, their functional efficiency declines, affecting not only their proliferation and differentiation but also their immune-regulating functions. The gene forkhead box M1 (FoxM1), known for its role in cell cycle progression, is implicated in the regulation of senescence. This study investigates the impact of FoxM1 on the expression of key immunomodulatory genes, including interleukin-6 (IL-6), Cyclooxygenase-1 (COX1), and human leukocyte antigen-G (HLA-G), during the senescence of AF-MSCs. Objective: This research aimed to compare the expression of certain genes involved in immunomodulatory and cell senescence between proliferative and senescent AF-MSCs. Materials and Methods: In this in vitro experimental study, AF-MSCs were obtained from 7 pregnant women by amniocentesis from Yazd Reproductive Sciences Institute, Yazd, Iran. The homogeneity of AF-MSCs was confirmed by flowcytometry. After consecutively passages, the senescence status of AF-MSCs was evaluated by beta-galactosidase (X-gal Cinna Gene) staining. quantitative polymerase chain reaction technique was used to investigate the changes in the expression of senescence and immunomodulatory marker genes. Results: The molecular analyses revealed a significant upregulation of immunomodulatory genes IL-6 (p = 0.008) and COX1 (p = 0.030) during senescence. Conversely, the increase in HLA-G expression did not reach statistical significance (p = 0.106). Additionally, the expression of the FoxM1 gene, associated with cellular senescence, was notably downregulated in senescent cells compared to their proliferative counterparts. Conclusion: These findings indicate that, despite the cessation of proliferation due to replicative senescence, AF-MSCs derived from varied fetal progenitor cells may maintain their immunomodulatory properties during in vitro expansion. This characteristic holds significant implications for the therapeutic application of AF-MSCs in regenerative medicine. Keywords: Mesenchymal stem cells, Amniotic fluid, Cellular senescence, Forkhead transcription factors, Immunomodulation. 2025 5 01 39 56 http://ijrm.ir/article-1-3699-en.pdf

217-3700 2026-10-15 10.1002

International Journal of Reproductive BioMedicine IJRM 2476-4108 2476-3772 10.29252/ijrm 2025 23 5 A Rezaei-Golmisheh P-1 Effects of aluminum chloride exposure on the micro-structure of the testis in mice Rezaei-Golmisheh A, Yarahmadi MJ, Sadeghi Nikpey F. Department of Basic Sciences, School of Veterinary Medicine, Ardakan University, Ardakan, Iran. Email: arezaei82@gmail.com Background: Aluminum, the third most abundant element in the Earth's crust, is found in kitchen utensils, food additives, pharmaceuticals, water purification systems, and cosmetics like anti-perspirants. Upon entering the stomach, aluminum converts to aluminum chloride (AlCl3) by gastric acid. Exposure to aluminum can cause various adverse effects, notably reproductive toxicity. Objective: This study aimed to investigate the effect of AlCl3 on the structure of seminiferous tubules in mice. Materials and Methods: In this experimental study, 15 male NMRI mice, (3 months, 35 ± 3 g), were randomly assigned into 3 groups (n = 5/each): Control (C), experiment 1 (EXP1), and experiment 2 (EXP2). Mice were housed under standard condition at 22 ± 2°C with a 12-hr light/dark cycle and free access to food and water. Mice were treated for 3 wk with daily doses of 0, 50, and 100 mg/kg body weight of AlCl3 in distilled water (0.1 ml) via intraperitoneal injection. Changes in body weight were recorded. At the end of the treatment period, following CO2 exposure mice were euthanized via cervical dislocation, and testicular tissue samples were collected. After fixation in 10% buffered formalin and tissue processing, 5 µm sections were prepared and stained with hematoxylin and eosin method. Histological changes in the seminiferous tubules and interstitial tissue were evaluated, and the tubular differentiation index (TDI) was calculated. Results: The control group showed a significant increase in body weight (38.8 gr) during treatment (p < 0.05), while the EXP1 experienced a non-significant decrease (34.96 gr), and the EXP2 group demonstrated a significant reduction (32.19 gr) in body weight (p < 0.05). Micrographs of testicular sections from the control group revealed healthy structure and layers of spermatogenic cells of seminiferous tubules and spermiogenesis occurring near the lumen. The interstitial tissue contained cohesive clusters of Leydig cells. In EXP1, a reduction in seminiferous tubules diameter beneath the tunica albuginea was observed, along with fewer spermatogenic cells, cell layer detachment, shedding of cell layers, and the formation of empty spaces in the tubule epithelium. Mild interstitial edema accompanied a reduction in Leydig cell numbers. EXP2 exhibited severe tissue damage, with some tubules lacking spermatogenic cells and only Sertoli cells visible among empty spaces. Extensive edema in the interstitial tissue was accompanied by scattered Leydig cells. TDI values among the groups were 95.9 ± 2.9%, 86.1 ± 8.8%, and 51.1 ± 7.3%, respectively, indicating a significant reduction in EXP2 compared to control and EXP1 (p < 0.05). Conclusion: AlCl3 exposure adversely affects the structural integrity of seminiferous tubules in mice, leading to significant changes in testicular histology. Decrease in TDI emphasizes the potential reproductive toxicity of AlCl3, which may compromise male fertility. These findings call for further research into the mechanisms of aluminum-induced reproductive toxicity and underscore the need for regulating aluminum exposure to safeguard male reproductive health. Keywords: Aluminum chloride, Testis, Mice, TDI, Seminiferous tubules. P-2 A new approach to Peyronie’s disease Jelodarian A, Rafiee F. Student Research Committee, Shiraz University of Medical Sciences, Shiraz, Iran. Email: alijelodarian@gmail.com Peyronie's disease is a medical condition characterized by the formation of scar tissue inside the penis, which can lead to a curvature or deformity of the penis during erection. The disease can lead to problems with sexual function and marital relationships, but it does not directly lead to infertility. This narrative review was conducted in the electronic databases Google scholar, PubMed, Web of Science after using the keywords Peyronie’s disease, marital relationships and infertility. Initially, 78 articles were identified from 2015-2024 in the fields and articles in English. After the initial review, 34 studies were reviewed. After further exclusion based on abstract review, the full text of 11 published articles that were available was studied. We present seven approaches: 1) intraregional therapies: recent advancements focus on using injectable therapies directly into the plaque causing Peyronie’s disease. 2) shockwave therapy: low-intensity shockwave therapy is emerging as a non-invasive option for treating this disease. This technique uses sound waves to stimulate blood flow and promote healing in the affected area. Studies suggest that low-intensity shockwave therapy may reduce pain and improve curvature by promoting tissue remodeling and reducing plaque size over time. 3) vacuum erection devices: can be used not only for erectile dysfunction but also for Peyronie’s disease. 4) penile traction therapy: penile traction devices are designed to stretch the penis gently. 5) surgical options: Newer surgical techniques, such as the plication procedure or plaque incision and grafting, aim to correct curvature effectively while preserving penile length. 6) psychological support and counseling: therapy can help address feelings of anxiety, depression, and body image concerns that often accompany this condition, providing a holistic approach to care. 7) combination therapies: a promising approach involves combining different treatments. These new approaches to treating Peyronie’s disease reflect a growing understanding of the condition and the need for individualized care. Incorporating both medical and psychological perspectives can lead to improved outcomes for patients. Keywords: Peyronie’s disease, Marital relationships, Infertility. P-3 The effect of consecutive ejaculation on the sperm parameters in the oligo-astheno-teratozoospermia men Hosseini A1, 2, Borzouie Z1, 2, Khalili P3, 4, Vatanparast M5, 6. Department of Anatomical Sciences, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran. Clinical Center for Infertility, Shahid Behashti Hospital, Isfahan, Iran. Social Determinants of Health Research Center, Rafsanjan University of Medical Sciences, Rafsanjan, Iran. Epidemiology and Biostatistics Department, School of Public Health, Rafsanjan University of Medical Sciences, Rafsanjan, Iran. Molecular Medicine Research Center, Research Institute of Basic Medical Sciences, Rafsanjan University of Medical Sciences, Rafsanjan, Iran. Clinical Research Development Unit (CRDU), Moradi Hospital (Moradi Education and Clinical Centre), Rafsanjan University of Medical Sciences, Rafsanjan, Iran. Email: mahboob_vatan@yahoo.com; drakramhosseini@gmail.com Background: Recently, the World Health Organization recommendation for abstinence time for semen analysis has been challenged in some studies and many recommended a second short abstinence ejaculation. More evidence is needed to approve this for clinical use. Objective: This study aimed to compare the average routine abstinence time (2-7 days) with the short time (1-2 hr) on sperm quality based on functional parameters in a population of oligo‐astheno‐teratozoospermia (OAT) men. Materials and Methods: From April to July 2024, the semen samples were retrieved from 50 men with OAT 2 times: one standard 2-7 days (long ejaculation) and short duration trimming (1-2 hr after the 1st ejaculation). All semen parameters and sperm DNA integrity were compared between groups. Results: Mean sperm concentration (10.40 vs. 8.76, p = 0.001), total sperm count (28.53 vs. 12.24, p < 0.001), and mean semen volume (2.69 vs. 1.40, p < 0.001) were higher in the first ejaculation (2-7 days of abstinence), while progressive motility (20.52 vs. 13.32, p < 0.001), non-progressive motility (53.46 vs. 48.86, p < 0.012), morphology (2.46 vs. 1.46, p < 0.001), and viability (83.90 vs. 77.96, p < 0.001) were significantly higher in the second ejaculation. The second sample also showed lower immotile (26.82 vs. 38.02, p < 0.001) and DNA fragmentation (19.5 vs. 26.96, p < 0.001). Conclusion: Taking all data into account, an additional short abstinence period may be a simple and helpful strategy to obtain better sperm quality in male infertility causes, especially in OAT cases. The recommended current guidelines regarding the abstinence period may need to be revisited in severe male factors. Keywords: Semen analysis, Consecutive ejaculates, Sexual abstinence, Asthenozoospermia, DNA fragmentation. P-4 Efficacy of zeta potential sperm selection method on sperm DNA fragmentation Allahgholi M1, Sabbaghian M1, Sadighi Gilani MA1, Narimani N2. Department of Andrology, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran. Department of Urology, Hasheminejad Kidney Center (HKC), Iran University of Medical Sciences (IUMS), Tehran, Iran. Email: nima_dr2001@yahoo.com Background: The sperm DNA fragmentation index (DFI) is a male reproductive health criterion affecting assisted reproductive techniques' results. Protamines are proteins found in the nucleus that are crucial for maintaining the integrity of sperm DNA; they are essential for the stability and packaging of sperm DNA. Defects in chromatin compaction are often associated with compromised protamine levels. These defects can lead to damaged DNA strands. Efforts to obtain high-quality mature sperm seem necessary. In this regard, advanced sperm selection techniques, such as zeta potential, have gained popularity. Objective: This study aimed to investigate the effect of zeta potential sperm selection in obtaining spermatozoa with better DNA integrity and chromatin structure. Materials and Methods: This before-and-after laboratory study was performed on 20 infertile men with a high DFI (> 25%) and at least one prior failed in vitro fertilization attempt. Semen samples were processed using the zeta potential technique. Sperm DNA integrity was evaluated pre- and post-treatment using the sperm chromatin dispersion test, and protamine deficiency was assessed using chromomycin A3 staining. The study was conducted at Royan Research Institute, Tehran, Iran from August 2024 to December 2024. Results: Sperm chromatin dispersion results showed that the difference in the mean percentage of total DFI before sperm preparation using the zeta method was 41.46% ± 8.60% and after it was 32.07% ± 11.12% (p < 0.001). The average rate of chromomycin A3+ before and after zeta were 40.31% ± 10.87% and 30.93% ± 11.86%, respectively (p < 0.001). Statistical significance was defined as (p < 0.05). Conclusion: The zeta potential method effectively selected spermatozoa with reduced DNA fragmentation index and with higher quality chromatin. Keywords: Semen, Infertility, DNA fragmentation, Spermatozoa. P-5 Application of nitrates and nitric oxide donors as a transdermal therapy for erectile dysfunction: A comprehensive narrative review Khorasanian F1, Shami M2, 3, Langarizadeh MA4, Ranjbar Tavakoli M4, Rezaiezadeh H5, Forootanfar H4. Department of Midwifery, School of Nursing and Midwifery, Geriatric Care Research Center, Rafsanjan University of Medical Sciences, Rafsanjan, Iran. Reproductive Health Promotion Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran. Department of Reproductive Health and Midwifery, School of Nursing and Midwifery, Tehran University of Medical Sciences, Tehran, Iran. Pharmaceutical Sciences and Cosmetic Products Research Center, Kerman University of Medical Sciences, Kerman, Iran. Department of Medicinal Chemistry, School of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran. Email: h_forootanfar@kmu.ac.ir Erectile dysfunction is recognized as one of the most widespread urological conditions globally, exerting a substantial impact on the quality of life for affected individuals and their partners. With a growing number of men experiencing erectile dysfunction, various pharmacological treatments have emerged in recent years. Nevertheless, systemic therapies continue to pose significant issues, including potential drug interactions and contraindications in patients with comorbid conditions. These challenges have prompted increasing interest in developing formulations that maintain therapeutic efficacy while minimizing systemic side effects and risks. This comprehensive narrative review explores the transdermal application of nitrates and nitric oxide donors for treating erectile dysfunction, focusing on therapeutic potential, mechanisms of action, local side effects, and formulation strategies. A targeted literature search was conducted using the PubMed and Scopus databases. The search was limited to English-language studies without a specific time frame and focused on titles and abstracts, excluding MeSH terms to broaden the scope. Search terms included combinations such as "nitrates", "nitroglycerin", "glyceryl trinitrate", and "NO donor" with "topical", "transdermal", "gel", "cream", "ointment", and “erectile dysfunction”. Studies were screened based on their scientific quality and thematic relevance, and those addressing transdermal approaches in erectile dysfunction treatment were selected for full review. The analysis highlighted the potential of various organic nitrates, including nitroglycerin and isosorbide dinitrate, as well as nitric oxide donors such as volatile alkyl nitrites, sodium nitroprusside, L-arginine, and linsidomine. The review evaluated their performance both as standalone agents and in combination therapies. Key areas of analysis included pharmacodynamics, therapeutic efficacy, tolerability, and potential contraindications. Based on current evidence, enhanced transdermal formulations could offer a promising alternative or adjunctive strategy for managing ED. Nevertheless, most existing evidence stems from preclinical studies, highlighting the necessity for future clinical trials to more accurately assess the practical efficacy and safety of these therapeutic strategies. Keywords: Erectile dysfunction, NO donors, Nitrates, Nitric oxide, Topical therapy. The original full text of this abstract has been published: Khorasanian F, Shami M, Langarizadeh MA, Ranjbar Tavakoli M, Rezaiezadeh H, Forootanfar H. Application of nitrates and NO-donors as a transdermal therapy for erectile dysfunction: A comprehensive review. Sex Med Rev 2025; 13: 211-228. Doi: 10.1093/sxmrev/qeaf005. P-6 Comparing the reliability of two laboratory methods for assessing sperm count; standard neubauer slide and disposable glass slide Lotfalian A1, Izadi M1, 2. Research and Clinical Center for Infertility, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Andrology Research Center, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Email: mizadi890112@gmail.com Background: Accurate sperm count assessment is critical in reproductive biology for evaluating male fertility. The neubauer hemocytometer is a standardized tool recommended by the World Health Organization for sperm counting due to its precision and reproducibility. In contrast, the disposable glass slide is often used as an alternative method due to its simplicity and cost-effectiveness; however, it is more reliant on the observer’s experience. Objective: This study aimed to compare sperm counts obtained using the standard neubauer slide and disposable glass slide to evaluate the reliability and accuracy of these methods. Materials and Methods: This experimental pilot study examined 30 normal semen samples from men at the Andrology Department of the Yazd Reproductive Sciences Institute, Yazd, Iran in winter 2024, which were collected and analyzed in a controlled laboratory setting. Sperm counting was performed independently by 2 observers using both the standard neubauer slide and the disposable glass slide. The neubauer method analysis was conducted using a grid-based system after immobilizing spermatozoa. In the disposable glass slide method, sperm counts were performed using manual observation under light microscopy without grid assistance. Data were collected and compared between observers and across methods to determine consistency, accuracy, and potential discrepancies. Results: The results showed there was no significant difference in sperm counts between using the standard neubauer and disposable glass slide (p = 0.452). However, the sperm count using a disposable glass slide by different investigators will yield different results (p = 0.001), while counting using the neubauer slide by different people will yield the same results. Conclusion: Although the results obtained from the 2 methods in this research center were not significantly different, the standard neubauer slide, as endorsed by the World Health Organization guidelines, is recommended as the preferred method for sperm count assessment in clinical and research settings. Standardization through the neubauer chamber ensures more accurate and reliable data, which is essential for an accurate assessment of semen parameters and monitoring treatment outcomes. Keywords: Sperm count, Disposable glass slide. P-7 The relationship between the increase in sperm DNA fragmentation index with different methods of sperm cryopreservation Rahimi MM1, Baya D2, Alahgholi M3, Sabbaghian M3. Department of Developmental Biology, Faculty of New Biological Science and Technologies, University of Science and Culture, ACECR, Tehran, Iran. Department of Biochemistry, Faculty of New Biological Science and Technologies, University of Science and Culture, ACECR, Tehran, Iran. Department of Andrology, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran. Email: marjan.sabbaghian@gmail.com Background: Both the diagnosis and treatment of male infertility depend on the integrity of DNA. Infertility greatly depends on the preservation of human sperm by cryopreservation. When a male partner exhibits significant abnormalities in semen parameters, human sperm cryopreservation is a crucial component of the therapy of male infertility. Semen and spermatozoa can be cryopreserved in liquid nitrogen using a variety of methods and techniques. Sperm motility will be significantly reduced by the cryopreservation procedures, but other factors such as DNA fragmentation, reactive oxygen species, and membrane and acrosome integrity are also impacted. Compared to fertile men, infertile men's sperm DNA is more susceptible to freezing damage. Objective: This study aimed to compare different methods of sperm freezing on the preservation of DNA integrity in sperm samples from individuals. Materials and Methods: The present blinded experimental study was performed on October 2024 in Royan institute, Tehran, Iran. Sperm samples from 10 human male were collected. We divided the samples into 2 different sperm-freezing protocols group. In the first group, the samples were frozen and stored in liquid nitrogen at -196°C. In the second group, the samples were stored in a freezer at -80°C. In the second group had 2 subgroups: in the first subgroup snap-freeze was performed and stored in the -80°C freezer and for the second subgroup, samples were placed directly into the freezer. The sperm DNA quality was assessed by the sperm chromatin dispersion. Results: The results of the sperm chromatin dispersion showed that there was a difference in the total percentage of DNA fragmentation index between the different methods of sperm cryopreservation (p < 0.05). In the first method, the average percentage of DNA fragmentation index was (35.70 ± 0.08), in the second group; in the first subgroup, the mean DFI was (45.90 ± 0.15) and in the second subgroup it was (51 ± 0.14). There was a significant difference between the 2 methods (liquid nitrogen at -196°C and freezer at -80°C) (p = 0.001), but the difference between the 2 subgroups of the second method was not significant (p = 0.166). Conclusion: Freezing and storing the sperm samples in liquid nitrogen is more suitable for preserving DNA integrity and can create better conditions for sample storage. This method can prevent the formation of ice crystals and cause less damage to the sperm nucleus. Keywords: Cryopreservation, Infertility, DNA fragmentation, Spermatozoa. P-8 Rutin mitigates the adverse effects of the methotrexate chemotherapy on sperm parameters in NMRI mice model Taheri F, Soleimani Mehranjani M, Ahmadi S. Department of Biology, Faculty of Science, Arak University, Arak, Iran. Email: taherifatemeh158@gmail.com Background: Methotrexate, used to treat cancer and autoimmune disorders, can damage testicular tissue, disrupt spermatogenesis, and cause infertility by reducing cellular antioxidant capacity and increasing reactive oxygen species. Rutin, as a flavonoid, has high antioxidant capacity and reduces the effects of reactive oxygen species on sperm quality. Objective: This study investigated the potential protective effects of rutin, a natural flavonoid with antioxidant properties, on sperm parameters in NMRI mice exposed to methotrexate. Materials and Methods: In this experimental study, 40 adult NMRI male mice (average weight: 31 gr) were randomly divided into four groups (n = 8): group 1 (control), groups 2 and 3 received at the end of the 3rd wk, a single dose of 20 mg/kg/bw of methotrexate by intraperitoneal injection. Groups 3 and 4 received 100 mg/kg/bw rutin for 35 days by oral gavage every other day. Following dissection, the caudal epididymis was placed in a plate containing Ham's F10 culture medium, and the extracted sperm were analyzed for various sperm parameters. Results: The methotrexate group showed a significant reduction in the mean number, viability, motility, and membrane integrity of the sperm cells when compared to the control group (p ≤ 0.001). However, these parameters significantly increased in the methotrexate + rutin group compared to the methotrexate group (p ≤ 0.000). Conclusion: Our results revealed that rutin, a potent antioxidant, can mitigate the adverse effects of methotrexate on sperm parameters. Keywords: Spermatozoa, Methotrexate, Rutin, Mice. P-9 The effects of zinc oxide nanoparticles on taxol induced testicular toxicity in mice Kahedi M, Mahmoodi M, Yengi Maleki Z. Department of Biology, Faculty of Sciences, Arak University, Arak, Iran. Email: m-mahmoodi@araku.ac.ir Background: Taxol, with the brand name of paclitaxel, is a chemotherapeutic agent capable of producing reactive oxygen species and disrupting male fertility. Objective: In this study, the role of zinc oxide nanoparticles against the destructive effects of taxol on testicular tissue in adult male NMRI mice was investigated. Materials and Methods: 24 adult male NMRI mice (35 ± 2 gr, 8 wk) were divided into 4 groups (n = 6/each): control, taxol (5 mg/kg), zinc nanoparticles (5 mg/kg) and taxol + zinc nanoparticles and treated for 35 days intraperitoneally. At the end of treatment, after anesthetizing the mice, body and testis weight and tissue parameters with stereological technique and testosterone level were evaluated. Results: A significant decrease in the weight and volume of the testis respectively (p < 0.05) and (p < 0.001), the volume, diameter and height of the germinal epithelium of the seminiferous tubules (p < 0.001) and the level of testosterone hormone (p < 0.001) and a significant increase in the volume of the interstitial tissue were observed in taxol group compared to the control group (p < 0.001). The number of germ cells and spermatogenesis indices in the group treated with taxol showed a significant decrease compared to the control group (p < 0.01). The simultaneous treatment of zinc oxide nanoparticles with taxol significantly reduced the mentioned parameters compared to the taxol group. Conclusion: These findings suggested an antioxidant potential role for zinc oxide nanoparticles in the protection of taxol -induced testicular toxicities. Keywords: Taxol, Zinc oxide nanoparticles, Testis, Spermatogenesis indices, Mice. P-10 The effects of theobromine on sperm biochemical factors in asthenozoospermic men during cryopreservation Mohammadi M1, Soleimani Mehranjani M1, Esmaili A2. Department of Biology, Faculty of Basic Sciences, Arak University, Arak, Iran. Department of Biotechnology, Faculty of Medicine, Guilan University of Medical Sciences, Guilan, Iran. Email: m-soleimani@araku.ac.ir Background: Asthenozoospermia reduces sperm motility, leading to infertility. Sperm cryopreservation is an important technique in assisted reproductive technology which often causes significant damage to sperm quality. Adding antioxidants to the cryopreservation medium may mitigate these adverse effects. On the other hand, Theobromine (TB) is a plant alkaloid from the methylxanthine group, and is widely used for its antioxidant properties. Objective: This Experimental study aimed to assess the effect of TB supplementation on sperm biochemical parameters in asthenozoospermia men during cryopreservation. Materials and Methods: Semen samples were collected from 30 asthenospermic men in 1403 at Mehr Infertility Treatment Center, Rasht, Iran. Each sample was then divided into three groups (n1, n2, n3): n1: control (fresh), n2: freeze (treated with cryoprotectant), and n3: freeze + TB (treated with cryoprotectant and 10 mmol/L TB). 30 samples were examined in each group. In each sample, the level of sperm tumor necrosis factor alpha (TNF-α), malondialdehyde (MDA) and sperm antioxidant enzymes, including catalase, glutathione, and superoxide dismutase were analyzed using enzyme-linked immunosorbent. Results: The freeze group showed a significant reduction in the mean levels of sperm antioxidant enzymes, along with a significant increase in mean sperm TNF-α and MDA levels compared to the control group (p < 0.001). In contrast, the freeze + TB group showed a significant increase in the mean levels of sperm antioxidant enzymes and a significant decrease in mean sperm TNF-α and MDA levels compared to the freeze group (p < 0.001). Conclusion: This study found that cryopreservation harms sperm quality by lowering antioxidant enzyme levels and increasing TNF-α and MDA. TB supplementation improved antioxidant levels and reduced TNF-α and MDA, suggesting it may enhance sperm quality in asthenozoospermic men, potentially improving assisted reproductive outcomes.   Keywords: Asthenozoospermia, Spermatozoa, Cryopreservation, Oxidative stress, Theobromine. P-11 Association between serum vitamin D levels and sperm PRM1 and PRM2 transcript content Dorostghoal M, Torki A, Hajari MR. Department of Biology, Shahid Chamran University of Ahvaz, Ahvaz, Iran. Email: mdorostghoal@scu.ac.ir Background: There is evidence that focuses on the possible processes governing the relationship between serum vitamin D levels and male fertility.  Objective: The present study evaluated the association between serum vitamin D levels with Protamine 1 (PRM1) and Protamine 2 (PRM2) transcripts abundance in ejaculated spermatozoa. Materials and Methods: In this cross sectional study, serum levels of 25-hydroxy vitamin D and PRM1 and PRM2 transcripts abundance were analyzed in ejaculated spermatozoa from normozoospermic donors (n = 45) and infertile men (n = 42) attending the Infertility Research and Treatment Center of ACECR Khuzestan, Ahvaz, Iran from September 2023 to October 2024. Using real-time polymerase chain reaction PRM1 and PRM2 transcript content were assessed in ejaculated spermatozoa. Results: In infertile men compared with fertile controls significantly (p = 0.014) lower levels of serum vitamin D concentrations were observed. Serum vitamin D levels were significantly correlated with sperm progressive motility (r = 0.266, p = 0.040) and normal morphology (r = 0.286, p = 0.027). A significant (p = 0.031) lower abundance of sperm PRM1 transcript was seen in infertile men compared with fertile controls. Men with lower serum vitamin D concentrations showed lower abundance of PRM1 (p = 0.032) and PRM2 (p = 0.045) transcripts in ejaculated spermatozoa. Conclusion: Our findings demonstrated the association between serum vitamin D concentrations and PRM1 and PRM2 transcripts content in ejaculated spermatozoa. Low levels of serum vitamin D may impact the male fertility by impairment in sperm DNA integrity. Keywords: Vitamin D, Male infertility, DNA integrity, Spermatozoa, Protamine. P-12 Comparative effects of opium tincture and methadone syrup on the reproductive system of male Wistar rats in medication-assisted treatment Sha'bani A1, Hassanzadeh Taheri MM1, Namaee MH2, Shadi M1, Hosseini M1, Sanjari A1. Department of Anatomy, School of Medicine, Birjand University of Medical Sciences, Birjand, Iran. Department of Medical Microbiology, School of Medicine, Infectious Diseases Research Center, Birjand University of Medical Sciences, Birjand, Iran. Email: mmhtahery35@gmail.com, Background: Medication-assisted treatment is a comprehensive approach to treating substance use disorders, particularly for opioid dependence. While opium tincture and methadone syrup are frequently prescribed for the treatment of opioid dependence, their effects on the reproductive system remain inadequately understood. Objective: This study aimed to examine the impacts of opium tincture and methadone syrup on plasma testosterone levels and the structural integrity of the testes of rats with addiction. Materials and Methods: In this experimental study, 36 adult male Wistar rats (200-250 gr, 8-10 wk) were divided into 3 groups (n = 12/each) of a control group, a methadone syrup group, and an opium tincture group. Following the establishment of addiction, rats received the maximum doses of methadone syrup (16.25 mg/kg) and opium tincture (150 mg/kg) administered twice daily for either 4 or 8 wk. After the 4th wk, half of the animals from each group were randomly selected for sampling, while the remaining rats were sampled at the end of the 8 wk. Histological examinations of the testes were performed, and serum testosterone levels were measured. Results: Compared to the control groups, serum testosterone levels were significantly decreased in the groups treated with opium tincture after 4 and 8 wk (p = 0.029, 0.034, respectively). However, specific testis weight was significantly reduced in the groups treated with opium tincture after 4 and 8 wk (p = 0.044, 0.040, respective) in comparison to the control groups. Histological assessments indicated that the seminiferous tubule area and the germinal layer area were significantly reduced in rats receiving either opium tincture or methadone syrup during both treatment durations (p < 0.001 for each) also their relative ratios was significantly decreased in rats receiving opium tincture after 4 and 8 wk (p ≤ 0.001, 0.030, respectively) as well as methadone after 4 and 8 wk (p = 0.020, 0.011, respectively) in comparison to control groups. However, the evaluation of spermatogenesis using the Johnson index revealed no significant differences between the studied groups (p > 0.05). Conclusion: The findings of this study indicated that the detrimental effects of oral opium tincture on the reproductive system of male rats were more significant than those associated with methadone syrup.  Keywords: Medication-assisted treatment, Opium, Methadone, Addiction medicine, Testis, Rats. P-13 Sperm DNA fragmentation index affects intrauterine insemination outcome: A preliminary data of cohort study Alizade Sani F1, Dadkhah F2, Mashayekhi M3, Vesali S4, Ebrahimi B5, Amirchaghmaghi E3, Sabbaghian M2. Department of Cellular and Molecular Biology, Faculty of New Biological Sciences and Technologies, Tehran, Iran. Department of Andrology, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran. Department of Endocrinology and Female Infertility, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran. Department of Basic and Population Based Studies in NCD, Reproductive Epidemiology Research Center, Royan Institute, ACECR, Tehran, Iran. Department of Embryology, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran. Email: Ftme.alizadesani@gmail.com Background: Intrauterine insemination (IUI) is generally the first line of infertility treatment. Sperm DNA fragmentation index (DFI) have important roles in sperm health and its function such as fertilization capacity. In addition, sperm motility in IUI cases is very important since sperm with better motility has more chance to achieve the oocyte and fertilization. Objective: This study was conducted to investigate the relationship between sperm DFI and sperm motility with IUI outcome. Materials and Methods: In this ongoing cohort study, from 2024-2025, 300 couples whose wives are candidate for IUI at Royan Institute, Tehran, Iran are enrolled and followed up till 2 wk later in day of checking serum beta human chorionic gonadotropin test. Inclusion criteria of the study is < 49 yr old men, not having varicocele, leukocytospermia, or reproductive system infections, with body mass index < 30 kg/m2, and < 40 yr old women with body mass index < 30 kg/m2. In the day of IUI cycle, non-processed part of semen sample received from embryology lab of Royan Institute, Tehran, Iran and 3-5 ×106 sperm were separated for DFI measurement by terminal deoxynucleotidyl transferase dUTP nick end labeling assay. Sperms washed and fixed in paraformaldehyde 4% (1 hr, 4℃), then washed with phosphate buffered saline (PBS) (2500 rpm- 5 min). After smear preparation, permeabilization solution (0.1% Triton X-100, 0.1% sodium citrate) was added for 2 min in 4℃ and washed with PBS. The slides were incubated in terminal deoxynucleotidyl transferase dUTP nick end labeling reaction mixture (1 hr, 4℃). After washing and mounting slides with glycerol in PBS (1:1), sperms analyzed using fluorescence microscope. According to IUI outcome base on beta HCG test, DFI percentage were compared between IUI success and failure groups. Results: Till now, 39 couples were enrolled: 9 couples in the IUI success group and 30 couples in the IUI failure group. The mean of sperm DFI was 5.5 ± 2.3% and 12.13 ± 3.8% in IUI success and IUI failure groups, respectively. This increase in DFI in the IUI failure group was statistically significant (p < 0.0001). There were no significant differences in sperm motility between the 2 studied groups at this sample size (p = 0.93).  Conclusion: According to preliminary data, men in the IUI failure group had higher DFI. This study continues until reaching 30 couples in each group. Keywords: IUI, DFI, Sperm motility, TUNEL. P-14 The influence of sodium hydrogen sulfide on sperm function and oxidative stress in varicocele-induced rats Ghajari E1, 2, Tavalaee M1, Meshkibaf MH2, Dattilo M3, Nasr-Esfahani MH1. Department of Animal Biotechnology, Reproductive Biomedicine Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, Iran. Department of Clinical Biochemistry, Faculty of Medicine, Fasa University of Medical Sciences, Fasa, Iran. R&D Department, Parthenogen, Piazza Indipendenza 11, Lugano 6900, Switzerland. Email: elham_ghajari@yahoo.com Background: Infertility is a complex condition with a high prevalence of varicocele which affects approximately 35-40% of cases and refers to the abnormal enlargement of the pampiniform plexus, primarily caused by reversed blood flow in the spermatic veins. While several studies have explored the pathophysiology of varicocele and its association with male infertility at the molecular level, oxidative imbalance and hypoxia seem to be the key factors leading to this condition. Objective: This study aimed to investigate the effects of sodium hydrogen sulfide (NaHS) supplementation, a hydrogen sulfide donor, on oxidant and antioxidant markers, as well as sperm function in rats with experimentally induced varicocele. Materials and Methods: In this experimental study, 55 male Wistar rats were divided into 3 groups: varicocele (25 rats), control (20 rats), and sham (10 rats). In the varicocele group, 5 rats started receiving NaHS treatment immediately after surgery and continued for 4 months. Another 10 rats began NaHS treatment 2 months after surgery and continued until the 4-month mark. The remaining 10 rats in the varicocele group did not receive any treatment. The control and sham groups followed similar treatment schedules. After 4 months, all rats were sacrificed and assessments were made of sperm parameters and function tests, as well as testicular malondialdehyde and total antioxidant capacity. Results: Varicocele induction significantly impaired sperm parameters and sperm function tests. NaHS treatment for 2 months increased sperm concentration (p < 0.001), while treatment for 2 and 4 months improved motility (p = 0.002 and p < 0.001), chromatin status (p = 0.001), and intracellular reactive oxygen species (p < 0.001) compared to untreated varicocele rats. After 4 months, NaHS treatment reduced testicular malondialdehyde levels (p = 0.004). Testicular total antioxidant capacity significantly increased after 2 months (p = 0.025) but decreased after 4 months of treatment in the varicocele group (p = 0.04). Conclusion: NaHS treatment improved sperm parameters and reduced oxidative stress in varicocele rats, with varying effects observed depending on the duration of treatment. Keywords: Varicocele, Semen analysis, Chromatin, Oxidative stress. P-15 Microsurgical techniques and assisted reproductive methods in male patients with cystic fibrosis: Approaches to fertility restoration Kalami Yazdi R1, Mojavezi AR1, Arjmand B2. Iranian Cancer Control Center (MACSA), Tehran, Iran. Cell Therapy and Regenerative Medicine Research Center, Endocrinology and Metabolism Molecular-Cellular Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran. Email: barjmand@tums.ac.ir Mutations in the gene that regulates cystic fibrosis transmembrane conductance result in the hereditary condition known as cystic fibrosis. To improve the condition of individuals with Cystic fibrosis and assist in their fertility, techniques such as microsurgical techniques (including microsurgical sperm retrieval, testicular sperm extraction, and microsurgical varicocelectomy) and assisted reproductive technologies (such as intracytoplasmic sperm injection, in vitro fertilization, and preimplantation genetic testing) can be used. Moreover, to investigate strategies for improving the quality of life and life expectancy of males living with cystic fibrosis, paying particular attention to their psychological and emotional needs is essential. In addition, in this narrative review study, the most relevant studies (from 692 studies) that were published from 2015-2025 and were accessible through PubMed, Scopus, and Google Scholar were reviewed. Therefore, studies on the use of assisted reproductive technologies and microsurgical procedures have revealed that male fertility in individuals affected by cystic fibrosis is greatly affected. These therapies not only address the physical difficulties related to the disorder but also help to raise general mental health and self-esteem. Additionally, assisted reproductive technologies and microsurgical procedures have greatly raised the chances of conception in male individuals with cystic fibrosis. By means of the meticulous application of sperm retrieval techniques and intracytoplasmic sperm injection, together with extensive genetic counseling, these men can achieve biological parenthood while controlling the related hereditary risks. In conclusion, people faced with cystic fibrosis who had not survived beyond the age of eighteen now have the chance to have fatherhood, therefore representing a major medical breakthrough. Keywords: Cystic fibrosis, Microsurgery, Methods, Assisted reproductive technologies. P-16 Short and long-term effects of COVID-19 and COVID vaccines on male fertility Moshrefi M1, Ghasemi-Esmailabad S2. Nanotechnology and Tissue Engineering Research Center, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Department of Tissue Engineering and Regenerative Medicine, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, Iran. Email: mojganmoshrefi@gmail.com The SARS-corona virus-2 enters the testis via angiotensin-converting enzyme 2 receptors. Its destructive mechanisms in the testicles include cytokine storm, systemic inflammation, oxidative stress, and fever, all of which impair spermatogenesis and disrupt hormonal balance in the short term. Acute coronavirus disease of 2019 (COVID-19) infection leads to testicular inflammation, reduced sperm concentration, and impaired motility. Immune cell infiltration (cluster of differentiation 3 [CD3+], T lymphocytes, cluster of differentiation 68 [CD68+] macrophages, and leukocytes) into the interstitial tissue further damages Leydig cells, reducing testosterone secretion and spermatogenesis. Additionally, fever and local inflammation can cause orchitis, negatively affecting sperm count, motility, and morphology. This study examines the short and long-term effects of COVID-19 on the male reproductive system, including testicular damage, hormonal imbalances, and sperm quality, while also assessing the impact of vaccination on male fertility. The review evaluates the studies on men with acute and chronic COVID-19. Also, the effect of vaccination was assessed and the following reports were evaluated. 1) testicular pathology: electron microscopy detection of viral particles in Sertoli, Leydig, and spermatid cells. 2) sperm analysis: evaluation of leukocytospermia, teratospermia, and obstructive azoospermia. 3) hormonal assessment: disruptions in the hypothalamic-pituitary-gonadal axis and testosterone levels. 4) long-term Effects: investigation of chronic inflammation, fibrosis, and seminiferous tubule damage. 5) vaccine impact: assessment of COVID-19 vaccines on sperm parameters and hormonal balance. The results showed that the short-term effects were: 1) testicular inflammation, leukocytospermia, and reduced sperm quality. 2) viral presence in testicular cells, leading to impaired spermatogenesis. 3) hormonal imbalance due to Leydig cell dysfunction. Also, the long-term effects were 1) potential scar formation, reproductive tract obstruction, and obstructive azoospermia. 2) chronic damage to seminiferous tubules, decreased sperm production, and subclinical fibrosis. On the other hands the studies showed that vaccination had no adverse effects on sperm parameters or hormones reported. COVID-19 significantly impacts male reproductive health in both acute and chronic phases, with potential long-term consequences such as fibrosis and hormonal dysfunction. While vaccines show no harmful effects on fertility, further longitudinal studies are needed to fully understand the lasting implications of COVID-19 and vaccination on the male reproductive system. Timely treatment is crucial to minimizing long-term complications. Keywords: COVID-19, Spermatozoa, Vaccine, Male fertility. P-17 In vitro effect of N-acetylcysteine on the quality and biochemical factors of normal human sperm Roostaee Z1, Soleimani Mehranjani M1, Cheraghi E2, Shariatzadeh SMA2. Department of Biology, Faculty of Science, Arak University, Arak, Iran. Department of Biology, Faculty of Sciences, University of Qom, Qom, Iran. Email: Roostaeez143@gmail.com Background: Infertility, defined as the inability to conceive after one year of unprotected intercourse, affects a significant portion of the population. Assisted reproductive technologies (ART) offer treatment options in which sperm processing is a critical step. This process usually takes about an hour and involves separating sperm from other components of the seminal fluid. However, exposure to external factors during this step can cause oxidative stress and reduce sperm quality. Therefore, the use of antioxidants is recommended to reduce oxidative stress and increase the success of ART. N-acetylcysteine (NAC), a potent antioxidant containing thiol groups, effectively neutralizes free radicals and protects sperm from oxidative damage. Objective: Given that some normal, fertile men may benefit from ART, this study aims to evaluate the effect of NAC on the quality, biochemical properties, and reactive oxygen species levels of normal human sperm during one hour of in vitro incubation. Materials and Methods: After liquefaction, semen samples from 30 fertile men were divided into 2 groups: control (no treatment, 1-hr incubation) and NAC-treated (50 μM NAC, 1-hr incubation). The study assessed sperm parameters, including motility, viability, DNA and chromatin integrity, plasma membrane integrity, and mitochondrial membrane potential. Additionally, total antioxidant capacity, malondialdehyde, and reactive oxygen species levels were evaluated. Results: In the NAC group, compared to the control group, there was a significant increase in the mean percentages of total and progressive sperm motility, chromatin and DNA integrity, cytoplasmic integrity, mitochondrial membrane potential, and total antioxidant capacity levels (p < 0.001). Conversely, the mean percentage of non-progressive sperm motility (p < 0.001), as well as malondialdehyde (p = 0.005) and reactive oxygen species levels (p = 0.01), were significantly lower in the NAC group compared to the control group. Conclusion: We concluded that NAC improves sperm quality during in vitro incubation by increasing motility, integrity, mitochondrial function, and antioxidant capacity while reducing oxidative stress markers. These findings suggest NAC is a valuable antioxidant supplement for improving sperm quality and increasing ART success rates.  Keywords: N-acetylcysteine, Oxidative stress, Spermatozoa. P-18 The role of probiotics and synbiotics in enhancing semen quality and sperm function in male infertility: Mechanisms and clinical implications Maghsoumi-Norouzabad L, Moini Jazani A, Nasimi Doost Azgomi R. Traditional Medicine and Hydrotherapy Research Center, Ardabil University of Medical Sciences, Ardabil, Iran. Email: L.maghsumi55@gmail.com Background: The prevalence of male infertility has prompted extensive research into therapeutic interventions aimed at improving semen quality. Probiotics, defined as live microorganisms including strains of lactobacillus, bifidobacterium, and lactococcus, and their combinations that confer a health benefit to the host, with prebiotics (synbiotics), have gained attention as a potential therapeutic approach for improving male reproductive health, particularly through their influence on semen parameters through different mechanisms. Objective: This review aimed to analyze clinical and animal studies to examine the effects of probiotics and/or synbiotics on male sperm quality. The results, underlying mechanisms, and future potential of these interventions for male reproductive health were discussed. Materials and Methods: A comprehensive search was conducted across major databases, including PubMed, Google Scholar, and Scopus, using relevant keywords including "male infertility" or "semen" or "sperm" and "probiotic" or "synbiotic" without any restriction on publication date. This search was conducted between January and February 2025. Only original clinical and animal studies published in English were included. Observational, in vitro, and review articles were excluded. Results: Five randomized clinical studies and 5 animal studies met the inclusion criteria. The results have demonstrated significant improvements in sperm quality, especially sperm motility, morphology, and overall count, and also reduction in sperm DNA fragmentation with the use of synbiotics and multi-strain probiotics in males with idiopathic infertility through alleviating oxidative stress, modulating inflammation, regulating reproductive hormones, and restoring gut microbiota balance. Conclusion: This review highlights the diverse mechanisms through which probiotics and synbiotics exert beneficial effects on male reproductive health. While the current evidence is promising, variability in probiotic strains, dosage, duration of treatment, and study designs can make it challenging to draw direct comparisons and generalizations across studies. Further large-scale clinical trials are necessary to fully elucidate the optimal probiotic strains, dosages, treatment durations, and safety of probiotics as a therapeutic approach for male infertility. Keywords: Probiotics, Synbiotics, Semen, Spermatozoa, Male infertility. P-19 Dose-dependent deleterious effects of chronic morphine administration on sperm and testicular parameters in adult male NMRI mice Haghpanah T1, Alizadeh M1, Afarinesh MR2. Department of Anatomical Sciences, School of Medicine, Kerman University of Medical Sciences, Kerman, Iran. Neuroscience Research Center, Institute of Neuropharmacology, Kerman University of Medical Sciences, Kerman, Iran. Email: mrz.alizad@yahoo.com Background: Opioid use, particularly morphine, has adversely affected male reproductive health, but its effective destructive dose has not yet been determined. Objective: This study aimed to evaluate the effects of various doses of morphine injections over 45 days on sperm and testicular parameters in mice, providing insights into the reproductive consequences of chronic morphine exposure. Materials and Methods: In this experimental study, 24 adult male NMRI mice, (8-10 wk, 25-30 gr) were randomly assigned to 4 groups (n = 6/each), including vehicle and morphine groups. The morphine groups received morphine at various doses of 10 (M10), 30 (M30), and 40 mg/kg (M40), twice daily (every 12 hr) for 45 consecutive days. Mice in the vehicle group received normal saline under the same schedule. At the end of the treatment period, all animals were euthanized, and sperm samples were collected from the tail of the epididymis for evaluating the sperm parameters (count, motility) using standard sperm analysis techniques. Also, their left testes were isolated, fixed, deparaffinized, sectioned, and stained with hematoxylin/eosin to assess the morphometries of the seminiferous tubules using Image J software. Results: Compared to the vehicle group, a dose-dependent decrease in sperm count was observed in the animals receiving morphine, with the most pronounced reduction in the group receiving 40 mg/kg of morphine (M10; p = 0.0098, M30; p = 0.0005, M40; p = 0.0002). Also, sperm motility decreased significantly in the morphine- treated mice that received 2 high doses of morphine (M30 and M40; p < 0.0001), although no statistically significant difference was found between the vehicle and morphine-10 groups. In addition, a considerable increase in the lumen’s diameter (M30 and M40; p < 0.0001) and a marked decrease in the germinal epithelium thickness of seminiferous tubules were observed in the morphine-treated groups (M30; p = 0.0069, and M40; p < 0.0001) compared with the vehicle group. Conclusion: The findings of this study demonstrate that chronic morphine exposure significantly impairs sperm parameters and also testicular morphometry in a dose-dependent manner, particularly at higher doses. These results underscore the potential reproductive risks associated with opioid use, highlighting the need for further investigation into the long-term effects of opioids on male fertility. Keywords: Morphine, Sperm parameter, Reproductive toxicity, Mice. P-20 Investigating the importance of assisted reproductive technology nurses' cultural competence in the quality of care for infertile clients: A systematic review Mortezanasab M1, 2, Jenabi Ghods M1, 2. Department of Nursing, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran. Student Research Committee, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran. Email: maedeh.mortezanasab@gmail.com Background: With the rise in global migration and cultural diversity, assisted reproductive technology (ART) nurses must be equipped to understand and address the unique beliefs, values, and practices of their patients. Cultural competence among nurses in ART is increasingly recognized as a critical factor influencing the quality of care provided to infertile clients. Objective: The aim of this study was to investigate the importance of nurses' cultural competence in the quality of care for infertile clients. Materials and Methods: This systematic review was conducted in accordance with PRISMA guidelines. A comprehensive search was performed in PubMed, CINAHL, Scopus, and Google Scholar for English-language articles published between January 2010 and December 2023, using keywords such as "cultural competence", "ART nursing", and "infertility". Studies were included if they empirically examined the link between cultural competence and nursing care in ART contexts. Non-empirical works and unrelated studies were excluded. The quality of included articles was assessed using the Joanna Briggs Institute (JBI) critical appraisal tools. A PRISMA flow diagram documented the screening and selection process. Results: A total of 1,245 records were initially identified, and after removing duplicates and screening, 68 full-text articles were reviewed. Following eligibility assessment, 18 studies were included in the final analysis. The findings highlight that cultural competence among ART nurses significantly enhances communication, fosters patient trust, and improves adherence to treatment. Patients reported higher satisfaction when their cultural backgrounds were acknowledged. Culturally responsive care was also associated with improved clinical outcomes by creating a respectful and inclusive environment for infertile clients from diverse backgrounds. These results underscore the critical role of cultural competence in ART nursing practice. Conclusion: Targeted training programs and the integration of cultural assessments into routine practice. By prioritizing cultural competence, ART nursing can improve patient experiences and outcomes, ultimately contributing to more effective infertility treatments. The findings underscore the need for ongoing education and awareness initiatives to cultivate a culturally sensitive approach within ART nursing, ensuring that all clients receive high-quality, personalized care tailored to their diverse needs. Keywords: Cultural competence, ART nurse, Infertility, Patient care, Nursing practice. P-21 Study of changes of C-reactive protein in using human platelet lysate after cesarean section in dogs Mahdavi firoozabadi M1, Aghamiri SM1, Nazifi S2, Farsinejad A3, Mahmoudi M1, Oloumi M1, Mahmoudi S1. Faculty of Veterinary Medicine, Shahid Bahonar University of Kerman, Kerman, Iran Department of Clinical Pathology, School of Veterinary Medicine, Shiraz University, Shiraz, Iran. Cell Therapy and Regenerative Medicine Comprehensive Center, Kerman University of Medical Sciences, Kerman, Iran. Email: mahdismahdavif@gmail.com Background: The reproductive physiology of canines is characterized by anon-seasonalcycle, exhibiting mono estrus behavior with a mandatoryanestrusphase. Cesarean sections are performed for various indications, includingobstructive dystociaand uterine inertia, both primary and secondary. This surgical procedure can effectively resolve many dystocia-related complications and enhance neonatal survival. However, cesarean sections are associated with risks such ashemorrhage,retained placenta,adhesions,uterine scarring, incision complications, andmetritis, which can lead to delayed uterine healing, reduced fertility, and decreased litter size. C-reactive protein (CRP) is an acute-phase protein that reflects systemic inflammation in dogs following surgery, trauma, infection, or neoplasia. It is also a valuable diagnostic marker for systemic inflammatory responses in canine patients. Objective: This study aimed to assess changes in CRP following the use of human platelet lysate after cesarean section in dogs. Materials and Methods: In this exprimental study, 10 pregnant native dogs (3-5 yr, 22-25 kg), were included. The appropriate time of cesarean surgery was determined following pregnancy diagnosis by ultrasonography and evaluation of the date of parturition. These dogs underwent standard cesarean section; by the extraction of puppies through a 4-5 cm ventral incision on the uterine horns. For 5 dogs in the treatment group, platelet lysate was administered at the incision site within the myometrium following Cesarean section. In 5 dogs of the control group, normal saline was injected at the incision site within the myometrium after cesarean surgery. Blood samples were collected from both groups on day zero (before surgery) and 5 days post-surgery. CRP was measured using a canine solid-phase sandwich the enzyme-linked immunosorbent assay method. Results: The mean CRP concentration on day zero in the control group was 3.21 µg/ml, and in the treatment group was 3.18 µg/ml, which was not significantly different. 5 days after the cesarean section, the mean CRP concentration increased in both groups. In the control group, it was 15.73 µg/ml but in the treatment group, it was 13.48 µg/ml, significantly lower than the control group. Conclusion: Platelet-rich plasma and its derivates such as human platelet lysate have emerged as a promisingnon-invasive therapeutic option for various medical conditions. Human platelet lysate is acellular and reduces concerns about immune reactions while providing a concentrated source of growth factors and cytokines. Additionally, human platelet lysate can be frozen for long-term storage. According to the result of the present study, it seems that using human platelet lysate in the incision line can effectively reduce inflammation caused by cesarean surgery. Keywords: Incision, Uterine repair, Acute phase protein, Inflammation response, PRP. P-22 Evaluation of vitamin D serum level and its relationship with anti-Mullerian hormone level in infertile women Habibi Darounkolaei Kh, Eslami Moayed M, Enayatrad M, Talebi A. Sexual Health and Fertility Research Center, Shahroud University of Medical Sciences, Shahroud, Iran. Email: alitalebi.ir@gmail.com Background: The key role of vitamin D in fertility is emphasized by the fact that vitamin D receptors are present in male and female reproductive organs, tissues and cells. Although anti-Müllerian hormone (AMH) is a key ovarian reserve marker, studies on the relationship between vitamin D levels and AMH yield conflicting results. Objective: The present study aimed to investigate the level of serum vitamin D concentration in the population of infertile women referred to Shokoufeh Infertility Treatment Center, Shahroud, Iran and its relationship with the serum level of AMH. Materials and Methods: In this cross-sectional study, the data of serum vitamin D and AMH level of 148 infertile women reffered to Shokoufeh Infertility Center, Shahroud, Iran between 2021 and 2022 for infertility treatment were extracted from their medical records. All women with polycystic ovary syndrome, endometriosis or history of ovarian surgery were excluded. Finally, the relationship between serum vitamin D and AMH level were evaluated. Results: Among the studied infertile women, 37.2% (n = 55) had vitamin D deficiency, while 62.8% (n = 63) had normal vitamin D levels. The mean serum concentration of AMH was not significantly different between groups (1.8 ± 1.2 vs. 1.9 ± 1.1 ng/ml, respectively, p = 0.396). No significant relationship was observed between serum vitamin D and AMH levels (p = 0.120). Conclusion: Numerous studies have yielded inconsistent results, and the findings of the present study are consistent with those reporting no significant association between vitamin D levels and AMH. While vitamin D may have some influence on AMH expression, it is probable that other regulatory factors exert a stronger impact. Keywords: Vitamin D, Anti-Müllerian hormone, Correlation, Infertility. P-23 Investigating the influencing factors on the clinical pregnancy rate in the intrauterine insemination cycles Peivandi S1, Peivandi S1, Ghasemzadeh F2, Khalilian AR3, Rahmani Z4. Department of Obstetrics and Gynecology, Faculty of Medicine, Sexual and Reproductive Health Research Center, Imam Khomeini Hospital, IVF Ward, Mazandaran University of Medical Sciences, Sari, Iran. Department of Obstetrics and Gynecology, Faculty of Medicine, Sexual and Reproductive Health Research Center, Imam Khomeini Hospital, Mazandaran University of Medical Sciences, Sari, Iran. Department of Community Medicine, School of Medicine, Thalassemia Research Center, Hemoglobinopathy Institute, Mazandaran University of Medical Sciences, Sari, Iran. Department of Obstetrics and Gynecology, Imam Khomeini Hospital, Mazandaran University of Medical Sciences, Sari, Iran. Email: dr_peyvandi@yahoo.com Background: Intrauterine insemination is considered one of the procedures of assisted reproductive techniques that help some infertile or hypo-fertile couples. Many factors affect on the pregnancy success rate in intrauterine insemination cycles. Objective: This study evaluated the influence of clinical and laboratory characteristics of cases on clinical pregnancy rate in intrauterine insemination cycles. Materials and Methods: This is a single-center cross-sectional study. The analysis was performed on 119 cases referred to the Infertility Treatment Center in Sari, Iran, between September 2023 and August 2024. The variables evaluated in this study are: age of women and their spouses, causes and type of infertility, sperm count and motility, sperm preparation method, type of medium used for processing and medicine used for ovarian stimulation during the cycle. The relationship between these factors and the rate of clinical pregnancy rate was investigated. Results: The mean age of women and their spouses was 28.76 ± 4.9 and 32.82 ± 5.5 yr, respectively. The type of infertility in women was 63.9% (76 of 119) primary and 36.1% (43 of 119) secondary.The most common causes of infertility were unexplained (28.6%), polycystic ovary syndrome (27.7%), male factor (10.9%) and combined factors of male and PCOS (8.4%). In 66.4% of cases, the sperm sample was prepared by the swim-up method, and in 33.6 % the gradient method was used. The sperm count after processing was 36 ± 1.5 m/ml. Sperm forward motility after processing was 41.8 ± 1.4%. In the cases whose sperm preparation media was Ham’s F10, 73.1% Ham’s with HEPES and 26.9% Ham’s without HEPES were used. The clinical pregnancy rate was 17.6%. All pregnancies were singletons. The rate of clinical pregnancy was 23.8% in women with polycystic ovarian syndrome, 14.3% in women with unexplained infertility, 14.3% in women with combined factors (male and polycystic ovarian syndrome), 9.5% in cases with endometrioma and 9.5% in cases with hypothalamic amenorrhea. However, this difference was not significant (p > 0.05). There was no significant difference in the type of infertility, the number and motility of sperm after processing, the type of media and the method of sperm preparation in the pregnant and non-pregnant groups. The rate of pregnancy was 18.2% when combination of letrozole, clomiphene, and HMG were used for stimulation rather letrozole or clomiphene alone (p = 0.02). Conclusion: The data from the present study showed that ovarian stimulation with combined use of letrozole, clomiphene and HMG has positive effect on the clinical pregnancy rate in intra insemination cycles. Keywords: Intrauterine, Insemination, Infertility, Pregnancy. P-24 The impact of the COVID-19 pandemic on healthy reproductive and childbearing services at Shiraz University of Medical Sciences Balaghi Z, Zamani Lari M. Health-Vice Chancellor, Shiraz University of Medical Sciences, Shiraz, Iran. Email: m.z.l.zamani@gmail.com Background: Providing care services for healthy fertility and offering counseling and care services for infertile women to monitor the treatment process has always been a key activity of the health care system. The outbreak of the coronavirus pandemic and subsequent reduction in activities at the national level posed challenges to the provision of health care services. Objective: This study aimed to evaluate the impact of the coronavirus pandemic on the provision of healthy fertility and childbearing services in the healthcare units of Shiraz University of Medical Sciences, Shiraz, Iran. Materials and Methods: In a cross-sectional study conducted from March 2019 to February 2023, under the auspices of Shiraz University of Medical Sciences, Shiraz, Iran inclusion criteria involved women who have been married for at least 6 months, have no children and are not currently pregnant. Exclusion criteria focused on pregnancy and divorce. Women whose last child is 18 months or older, women who have had a miscarriage in their last pregnancy and women who desire to have children at any age and number of children were included. Services provided to a group of married women aged 10-54 included special care services for healthy fertility, fertility counseling services, identification, counseling, and referral services for infertile individuals, and pre-conception care services. Following fertility counseling, data was collected through the healthy fertility electronic office system and analyzed using statistical methods. A census method was applied to include all documented cases, and variables assessed included key factors such as age, marital status, and medical history. Data analysis was performed using appropriate statistical methods to ensure a comprehensive evaluation of the recorded data. Results: The data of 420525 women aged 10-54 with spouse who received care were examined. The study revealed an increasing trend in women's referrals for pre-conception care before, during, and after the coronavirus pandemic. However, this increase was not statistically significant during and after the pandemic (p = 0.167). Despite a significant increase in the frequency of women eligible for counseling and childbearing before, during, and after the pandemic referrals for counseling showed a significant decrease (p = 0.000). The frequency of infertility and the frequency of childlessness did not show a statistically significant difference in the 3 study periods (p = 0.264). Conclusion: The results suggest that the Covid-19 pandemic, except for the decrease in women's referrals for counseling services due to fear of contracting Covid-19, had no significant impact on other indicators of special reproductive health care and pre-conception care services. Keywords: COVID-19 pandemic, Reproductive care, Infertility care, Healthcare services. P-25 Unraveling the link between assisted reproductive technology and childhood cancer subtypes Kokabi Hamidpour Sh1, Eslami MP1, Hojjat-Assari S1, Arjmand B2. Iranian Cancer Control Center (MACSA), Tehran, Iran. Cell Therapy and Regenerative Medicine Research Center, Endocrinology and Metabolism Molecular-Cellular Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran. Email: barjmand@sina.tums.ac.ir Assisted reproductive technology (ART) has revolutionized the approach to infertility, but its potential implications for childhood cancer remain a topic of ongoing debate. Previous studies have reported varying associations between ART and several childhood cancers subtypes, highlighting the complexity of this relationship due to confounding factors such as birth weight and sex. The goal of the current study is to present a narrative review on the association between ART and specific childhood cancer subtypes. This review aims to summarize and analyze the existing literature, focusing on the potential genetic and environmental factors that may influence the outcomes, rather than a systematic quantitative analysis. The current narrative review was conducted by searching relevant literature in databases such as PubMed, Scopus, and Google Scholar. The search was guided by keywords related to ART, childhood cancer, specific cancer subtypes, genetic factors, and environmental factors. The impact of ART on childhood cancers is investigated and it has paradoxical results. Some studies prove the impact, specifically the association of the intervention with osteosarcoma without any regard for birthweight and gestation status. Hepatoblastoma, germ-cell tumors, retinoblastoma and rhabdomyosarcoma are following cancer subtypes but can be confounded strongly by confounding factors like birthweight (hepatoblastoma with low birthweight and neuroblastoma and germ-cell tumours by high birthweight). Also, sex is another confounding factor as it is observed that there is a higher cancer risk in boy than girls in intra cytoplasmic sperm injection technique. Also, genetic disorders are considered to be the main cause of some cancers. Fertility drugs that used for any step of this process can make epigenetic changes specially in imprinted genes that lead to retinoblastoma, neuroblastoma and acute myeloid leukaemia. Some studies didn’t find any association between childhood cancers and ART specifically in in vitro fertilization techniques. Leukemia, as the most common childhood cancer, has not any risk increase in association with ART. Clinical evidences suggest an association between ART and childhood cancer subtypes specifically genetically-related subtypes. The most risk belongs to osteosarcoma followed by hepatoblastoma. However, some observations ensure the independence between ART and childhood cancers. The most important concerns in results are related to confounding biases. Keywords: Assisted reproductive technology, Childhood cancer, Pediatric cancer. P-26 Psychometric evaluation of the endometriosis impact questionnaire in an Iranian population Mollazadeh S1, Mirghafourvand M2, Ghavami V3, Mordi M4, Mirzaii Kh1. Nursing and Midwifery, Care Research Center, Mashhad University of Medical Sciences, Mashhad, Iran. Social Determinants of Health Research Center, Tabriz University of Medical Sciences, Tabriz, Iran. Department of Biostatistics, School of Health, Social Determinants of Health Research Center, Mashhad University of Medical Sciences, Mashhad, Iran. Department Of General Practice, School of Public Health and Preventive Medicine, Faculty of Medicine, Nursing and Health Science, Monash University, Melbourne, Australia. Email: sanaz.mollazadeh@gmail.com Background: Endometriosis is a benign and chronic gynecological estrogen-dependent disease. Considering the prevalence and the importance of measuring the long-term effects of endometriosis in affected women's lives the endometriosis impact questionnaire (EIQ) scale was designed and psychometrically analyzed in English in Australia, in 3 recall periods (last 12 months, 1-5 yr ago and > 5 yr ago). It has never been used in Iran and its validity and reliability have not been assessed either. Objective: The present study aimed to translate and investigate the psychometric properties of the EIQ. Materials and Methods: In this cross-sectional study, 200 women were selected through random sampling in 2022 in Mashhad-Iran. After forward and backward translation, the face validity, content validity, and construct validity of EIQ (through corrected item-total correlation) were examined. To assess the reliability of the scale, both internal consistency (Cronbach’s alpha) and test-retest stability methods were employed. Results: Impact score with a score above 1.5 was approved. Content validity index and content validity ratio values of the EIQ tool were 0.970 and 0.940, respectively. The item to total correlation confirmed the construct validity of all seven dimensions of the tool, more than the cut-off (0.3) except lifestyle. Cronbach’s alpha coefficient and intra correlation coefficient were acceptable for all dimensions. Conclusion: The Persian version of EIQ is a valid and reliable scale. This tool is valid and reliable for investigating the long-term impact of endometriosis in Iranian society. Keywords: Translation, Psychometrics, Validity, Reliability, Endometriosis impact questionnaire, Endometriosis. The original full text of this abstract has been published: Mirghafourvand M, Ghavami V, Moradi M, Najmabadi KM, Mollazadeh S. Psychometric evaluation of the endometriosis impact questionnaire (EIQ) in an Iranian population. BMC Womens Health 2024; 24: 135. Doi: 10.1186/s12905-024-02975-7. P-27 Metformin effect on serum and follicular fluid hormone levels in women with polycystic ovarian syndrome: An RCT Sonieshargh Sh1, Shariatzadeh SMA1, Soleimani Mehranjani M1, Jannatifar R2, Ebrahimi Z3. Department of Biology, Faculty of Sciences, Arak University, Arak, Iran. Department of Reproductive Biology, Academic Center for Education, Culture and Research (ACECR), Qom, Iran. Department of Mesenchymal Stem Cells, Academic Center for Education Culture and Research (ACECR), QOM, Iran. Email: soniesharghshima@yahoo.com Background: Polycystic ovary syndrome (PCOS) is one of the most common causes of infertility, usually characterized by anovulation due to hormonal imbalances, including excessive luteinizing hormone (LH), normal level of follicle-stimulating hormone (FSH), insufficient gonadotropin secretion, hyperandrogenism, and the presence of polycystic ovarian morphology. Metformin is the most commonly prescribed medication for managing reproductive issues linked to insulin resistance in PCOS and is widely used to regulate menstrual cycles. Objective: In this study, the effects of metformin on the levels of LH, FSH, testosterone, and estradiol hormones were investigated to predict reproductive function in women with PCOS. Materials and Methods: This experimental study was a randomized, double-blind clinical trial conducted at the Qom University Jahad Infertility Treatment Center, Qom, Iran on 40 women with PCOS who were candidates for intracytoplasmic sperm injection. Participants were selected based on the Rotterdam criteria and ultrasound findings anti-Mullerian hormone levels, LH/FSH ratio, normal thyroid function and prolactin. Patients with systemic diseases, endocrine disorders or taking drugs affecting metabolism were excluded. Randomization was performed using colored cards (white: placebo, black: metformin). The metformin group (n = 20) received 1500 mg of metformin daily and the placebo group (n = 20) received 25 mg of ORS solution, both for 8 wk. Treatment began 2 months before the ovulation cycle and continued until the day oocyte retrieval. Finally, the levels of LH, FSH, testosterone and estradiol in serum and follicular fluid were measured by enzyme-linked immunosorbent assay. Results: In the metformin group, a significant decrease in the mean serum LH level (p = 0.000) and the mean follicular fluid LH level (p = 0.028) was observed compared with the placebo group. Similarly, the serum FSH level in the metformin group was significantly lower than in the placebo group (p = 0.005). However, the difference in follicular fluid FSH level between the 2 groups was not statistically significant (p = 0.074). Serum estradiol levels did not show a significant difference between the metformin and placebo groups (p = 0.810). In contrast, follicular fluid estradiol levels were significantly reduced in the metformin group compared with the placebo group (p = 0.001). There was no significant difference in serum testosterone levels (p = 0.954) or follicular fluid testosterone levels (p = 0.910). Conclusion: Based on the results of this study, metformin reduced serum and follicular fluid LH levels in PCOS women. Therefore, metformin can reduce the LH to FSH ratio in serum and follicular fluid of these women and improve the quality of oocytes and embryos in PCOS women. In addition, metformin caused an abnormal decrease in androgenic markers, including estradiol and testosterone. Therefore, by reducing androgens, it is possible to improve the follicular growth environment, leading to increased oocyte quality. Keywords: PCOS, Metformin, LH, Testosterone, Estradiol, FSH. Registration ID in IRCT: IRCT20210210050315N1 P-28 Air pollution and gestational diabetes: A cohort study Nazarpour S1, Mousavi M2, Ramezani Tehrani F2. Department of Midwifery, Varamin-Pishva Branch, Islamic Azad University, Tehran, Iran. Reproductive Endocrinology Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran. Email: ramezani@endocrine.ac.ir Background: Gestational diabetes mellitus (GDM) has the potential to negatively impact pregnancy and perinatal outcomes. Furthermore, it can influence the long-term well-being of both the mother and her child. Research indicates that the occurrence of gestational diabetes can be influenced by genetic and environmental factors. One environmental factor, air pollution, may increase the susceptibility of pregnant women to GDM. Studies suggest that exposure to air pollution could elevate the risk of developing GDM. Objective: This study investigated the relationship between exposures to air pollutants with gestational diabetes. Materials and Methods: This study is a retrospective cohort analysis, utilizing data obtained from a randomized community trial carried out in Iran between September 2016 and January 2019. Pregnant women under 14 wk of gestation who received prenatal care through governmental health services from the first trimester until delivery were considered eligible for enrollment, except those meeting specific exclusion criteria. The study excluded individuals with pre-existing diabetes, under the age of 18, an unknown last menstrual period, absence of ultrasound estimates between 6 and 14 wk of pregnancy, chronic hypertension or asthma, or current use of medications such as oral glucocorticoids, oral β-mimetics, β-blockers, antiretroviral agents, dilantin, or those with a history of bariatric surgery. Additionally, for this analysis, participants lacking data on their residential address or air pollutant exposure during and prior to pregnancy were excluded. Ultimately, a total of 6,090 pregnant women remained eligible for this study. During this study, information on air pollutant levels across 5 cities examined in the initial research was accessible. Each city had a pre-specified protocol for screening all pregnant women for GDM. The first trimester of pregnancy involved early screening of GDM using fasting plasma glucose test from the venous sample, with a specific threshold depending on each screening protocol. Moreover, those who did not have diabetes (overt or gestational) before were screened for GDM again at 24-28 wk of gestation, based on the pre-specified protocol criteria for that city. Concentrations of ozone, nitric oxide, nitrogen dioxide, nitrogen oxides, sulfur dioxide, carbon monoxide, particulate matter < 2.5 or < 10 µm were obtained from air pollution monitoring stations. Pollutant data were available in each city at different intervals and on an hourly basis each day (24 records for 24 hr per day). Using these data in the first stage of analysis, daily mean concentrations were calculated for each air pollutant in each city. Exposure to air pollutants during the 3 months preceding pregnancy and the first, second, and third trimesters of pregnancy for each participant was estimated. Results: The event of GDM was observed in 1144 women out of 6090 participants. None of the logistic regression models showed any statistically significant relationship between the exposure to any of the pollutants and GDM at different time points (before pregnancy, in the first, second and third trimesters of pregnancy and 12 months in total) (p > 0.05). Also, none of the adjusted logistic regression models showed any significant association between PM10 exposure and GDM risk at all different time points after adjusting for various confounders (p > 0.05). Conclusion: This study did not identify any association between the risk of GDM and exposure to various air pollutants before or during different trimesters of pregnancy. However, these findings should be interpreted with caution due to the limitations in accounting for all potential confounding factors. Further comprehensive cohort studies that address these confounders are urgently needed to better understand the impact of air pollution on GDM. Keywords: Gestational diabetes, Pollutant, Air pollution, PM2.5, PM10. P-29 Factors influencing professional communication and teamwork between midwives and physicians Shah Hosseini Z1, Abedian K1, Malayen S2. Department of Reproductive Health and Midwifery, Sexual and Reproductive Health Research Center, Nasibeh School of Nursing and Midwifery, Mazandaran University of Medical Sciences, Sari, Iran. Student Research Committee, Nasibeh School of Nursing and Midwifery, Mazandaran University of Medical Sciences, Sari, Iran. Email: samira.malaiien89@gmail.com Background: Interprofessional communication in healthcare, particularly in obstetrics, plays a crucial role in ensuring patient safety and improving service quality. Effective and coordinated collaboration between obstetricians and midwives through clear and respectful communication can significantly impact treatment outcomes and patient experience. The World Health Organization has also identified interprofessional education and collaboration as a key strategy for providing safe, patient-centered care. Objective: The primary aim of this study is to examine the factors influencing professional communication and teamwork between midwives and physicians in obstetrics. Materials and Methods: This study was conducted as a systematic scoping review based on PRISMA guidelines. By systematically searching PubMed, SID, CIVILICA, and Magiran databases (2014-2024) using the combined keywords "interprofessional communication", "midwife or physician", and "obstetrics and gynecology", 45 articles were selected for full-text evaluation from among the initial 367 studies, after removing duplicate articles and screening the title and abstract. Finally, 10 studies that met the inclusion criteria including publication in English/Persian, focusing on midwife-physician collaboration, and relevance to the field of obstetrics and gynecology were included in the study. Data related to communication facilitators and barriers were examined using thematic analysis. Results: This study showed that communication facilitators between doctors and midwives include effective communication skills such as active listening, clear communication, and mutual respect. Additionally, trust and mutual respect, communication skills training, empathy, creating a supportive environment, team coordination, and proper task division are factors that improve collaboration and quick decision-making. On the other hand, communication barriers include cultural differences, work pressure, resistance to change, lack of team coordination, and unclear task division, which can reduce the quality of communication and negatively affect effective collaboration. Conclusion: The results of this study indicate that effective communication and the development of teamwork skills are fundamental to fostering collaborative relationships. Individuals who clearly understand their professional and team responsibilities, and recognize the roles of other team members, can contribute more effectively to team activities. This enhances the utilization of the capabilities of other team members and improves overall team performance.  Keywords: Professional communication, Midwife, Physician, Influencing factors. P-30 Explanation of mothers regarding the challenges of fetal anomaly screening tests: A qualitative study Farzollahpor F1, 2, Mottagi Z3, Imani R4. School of Nursing and Midwifery, Shahroud University of Medical Sciences, Shahroud, Iran. Midwifery Group Instructor, School of Midwifery Sciences, Khalkhal Faculty of Medical Sciences, Khalkhal, Iran. Department of Reproductive Health, School of Nursing and Midwifery, Shahroud University of Medical Sciences, Shahroud, Iran. Ardabil University of Medical Sciences, Health Center of Ardabil County, Ardabil, Iran. Email: farzollahporf@yahoo.com Background: Nowadays, the implementation of fetal screening tests has become an integral part of prenatal care worldwide. Although the application of these tests has led to a reduction in the incidence of births with chromosomal abnormalities, their execution may result in psychological consequences for women. Objective: Therefore, this qualitative study was designed to elucidate and describe the profound concerns of pregnant and postpartum women regarding the situations and challenges associated with the performance of screening tests for fetal anomalies. Materials and Methods: The present study is a qualitative study utilizing a conventional content analysis approach. This study was conducted in the second half of 2023 in the comprehensive health service centers of Khalkhal County. Data were collected through semi-structured in-depth interviews with 16 pregnant mothers and 8 postpartum mothers who had undergone fetal anomaly screening tests. All interviews were audio-recorded and transcribed, with data analysis carried out using MAXQDA software, version 20. Results: In this study, participants' perceptions of the challenges associated with prenatal screening tests encompassed 7 categories and 12 subcategories. The categories included the creation of psychologically hazardous, stressful conditions and the bitter experience of pregnancy; challenges in decision-making regarding the sequential testing process; challenges in decision-making concerning future childbearing; financial challenges; challenges related to laboratory centers; challenges in decision-making regarding abortion; and challenges associated with a lack of support and assistance. Conclusion: Fetal health screening tests can assist in identifying women at risk of having offspring with chromosomal disorders. The widespread implementation of prenatal screening tests significantly reduces the incidence of these conditions. However, certain limitations and challenges associated with fetal screening tests have introduced ethical and legal considerations, complicating the necessity for comprehensive and extensive application of these tests. Keywords: Prenatal screening, Fetal abnormalities, Challenges, Pregnant women. P-31 The effect of a period of combined exercise training in overweight pregnant women on interleukin-10 serum levels Foghani M, Moghaddam-Banaem L. Department of Reproductive Health and Midwifery, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran. Email: moghaddamb@modares.ac.ir Background: Overweight and obesity during pregnancy increase health risks for both mother and baby, including inflammation and metabolic issues. Interleukin (IL)-10, an anti-inflammatory cytokine, affects pregnancy outcomes. While combined aerobic and resistance training improves metabolic markers in non-pregnant individuals, its impact on IL-10 in pregnancy is unclear. This study examines how combined exercise influences IL-10 levels in overweight pregnant women. Objective: To assess the impact of a combined exercise program on IL-10 serum levels in overweight pregnant women. Materials and Methods: In this randomized clinical trial, 25 overweight pregnant women (> 25 pre-pregnancy body mass index < 30 kg/m2) who met the inclusion criteria attending the prenatal clinic of Sarem hospital in Tehran, Iran in 2019-2020 were selected. The participants were randomly assigned to either an intervention group (n = 13) or a control group (n = 12). The exercise program for the intervention group consisted of 5 days/wk of a combination of aerobic, resistance, and stretching exercises from the 16th-18th wk of pregnancy to the 36th-37th wk of pregnancy. The participants in the intervention group recorded their exercise routine daily on forms provided to them. The control group continued their usual daily activities until the end of pregnancy. Both groups went through routine prenatal care. Both groups were evaluated for blood pressure, weight, and anthropometric characteristics during the 16-18, 25-29, and 36-40 wk of pregnancy, and venous blood samples were collected. Results: Both before intervention at 16-18 wk, and after intervention at 25-29 wk of gestation, no statistically significant difference was shown between groups regarding serum IL-10 levels, but after intervention at 36-40 wk of gestation this difference was significant, (15.76 ± 14.48 vs. 32.54 ± 37.62 pg/ml, p = 0.043). Based on the results obtained from linear regression analysis adjusting for the effect of various effective factors on IL-10 levels (such as maternal age and BMI) at both evaluations after intervention at 25-29, and 36-40 wk of gestation, IL-10 levels were found to be significantly lower in the intervention group compared to the control group (β: -0.428, p: 0.04, β: -0.36, p: 0.01 respectively). Conclusion: The study found that combined exercise training significantly influences serum IL-10 levels in overweight pregnant women, especially between 36-40 wk of pregnancy. This suggests that exercise may help manage inflammation, potentially improving maternal and fetal health. Further research is needed to understand the long-term effects of these findings. Keywords: Combined exercise, Pregnancy, Interleukin-10, Overweight. Registration ID in IRCT: IRCT20190410043222N1 P-32 The importance of mental health nursing in infertile couples Alian E, Eftekhari A. Meybod Nursing School, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Department of Nursing, Meybod School of Nursing, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Email: mr.erfan.alian@gmail.com Background: Infertility is defined as the inability to conceive after 12 months of regular unprotected intercourse. It can have negative physical, emotional, and social impacts on couples. To avoid this stress and life crisis, individuals often seek alternative treatment options, with assisted reproductive technology frequently considered a solution. However, this alternative can also be a significant source of stress. Daily injections, semen analyses, multiple ultrasounds, lengthy checklists, and financial costs have repeatedly been reported by individuals undergoing infertility treatment as psychological stressors. Objective: The present study was conducted to examine the significance of psychiatric nursing and the role of psychiatric care in the management of infertility among couples. Materials and Methods: In this type of systemic study, the keywords; Stress, Anxiety, Infertility, Assisted Reproductive Technology, and Nursing Care were systematically searched in English language in the online databases PubMed, Google Scholar, and Scopus within the time frame of 2015-2024. My criteria for inclusion and exclusion of articles is being international and focusing on psychological discussions. Results: Women undergoing infertility treatment bear a significant burden of physical and psychological fatigue. In addition to medical care, they require human and emotional support. The heightened sensitivity of these women to the emotions and changes arising from infertility underscores the importance of freely expressing these feelings. To achieve this goal, nursing interventions and positive interactions with participants are essential. Nurses can play a pivotal role in reducing participants stress and anxiety and addressing their emotional needs by providing specialized care. Emotional support, delivering accurate information and necessary education, respecting participants values, and establishing a warm and effective communication are key actions in this regard. Therapeutic communication is recognized as one of the effective methods for reducing anxiety and holds particular significance in nursing care. The therapeutic communication techniques employed by nurses can lead to positive changes in the psychological and clinical status of participants. Conclusion: Therefore, nursing counseling should be planned from the beginning of the infertility treatment process and continue until its conclusion, regardless of the outcome. Keywords: Stress, Anxiety, Infertility, Assisted reproductive technology, Nursing care. P-33 Global, regional, and national prevalence and disability-adjusted life years for secondary infertility in Iran and provinces of Iran: Results from the global burden of disease study, 1990-2021 Kolahi AA1, Kiamehr F2. Social Determinants of Health Reaserch Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran. Department Community Medicine, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran. Email: faezehkiamehr@gmail.com. Background: Secondary infertility is defined as the inability to conceive or carry a baby to term after previously giving birth, represents a significant global reproductive health challenge. Objective: This study aimed to comprehensively analyze the global, regional, national (Iran), and provincial burden of secondary infertility from 1990-2021, including point prevalence and years lived with disability. Materials and Methods: We conducted a cross-sectional analysis using Global Burden of Disease 2021 data. Age-standardized point prevalence and year of healthy life lost due to disability rates (per 100,000 populations) with 95% confidence intervals were calculated for benchmark years (1990 and 2021) at all geographical levels, including Iran's 32 provinces. Statistical modeling was employed to estimate trends. Results: Globally, age-standardized point prevalence increased from 2429.8 (95% CI: 1418.7-4097.3) in 1990-2860. 8 (1686.1-4801.1) in 2021 for women, and from 826.6 (443.6-1453.6) to 939.9 (493.4-1672.0) for men. In Iran, prevalence remained stable (women: 1141.6-1174.5; men: 434.6-435.7). Provincial disparities emerged, with highest prevalence in Tehran, Mazandaran, and Alborz (women) and Khorasan-e-Razavi, Khuzestan, and South Khorasan (men). Years lived with disability rates were lower in Iran (4.1; 1.3-9.8) than globally (9.7; 3.4-24.8). Conclusion: While global secondary infertility burden increased, Iran maintained lower prevalence and year of healthy life lost due to disability rates than global and Middle East and North Africa averages. Provincial-level variations highlight potential healthcare disparities requiring targeted interventions. Keywords: Infertility, Global burden of disease, Prevalence, Years lived with disability. P-34 The association between polycystic ovary syndrome and vaginal microbiome disorders Taghipour B1, ZareMobini F2, Asadi L2. Department of Midwifery, School of Nursing and Midwifery, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Research Center for Nursing and Midwifery Care, Non-Communicable Diseases Research Institute, Department of Midwifery, School of Nursing and Midwifery, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Email: fatemehzaremobini@yahoo.com Polycystic ovary syndrome (PCOS) is an endocrine disease that affects women of reproductive age. This disease is one of the causes of infertility. Changes in the vaginal microbiome appear to be one of the causes of PCOS. This study aimed to review the impact of the vaginal microbiome on polycystic ovary disease. In this narrative review study, articles were searched using the keywords "vaginal microbiomes", "infertility", "polycystic ovary syndrome", "reproductive health", and "vaginitis" through Pub-Med, Google Scholar, and Scopus databases, and the most relevant articles published since 2020 were reviewed. The inclusion criteria for studies included full-text articles, publication in Persian or English, and descriptive, analytical, and experimental studies. The search resulted in 56 articles, and the results were derived from 13 related studies that had full text. A review of studies has shown that disruptions in the vaginal and cervical microbiomes are associated with gynecological diseases including endometriosis, PCOS, and infertility. The microbiome plays an important role in maintaining the body's physiological balance. Changes in the microbiome can lead to changes in the body. Estrogen deficiency occurs in PCOS, which leads to disruptions in the vaginal microbiome, and these changes in the microbiome can also lead to PCOS. Alteration of the vaginal microbiome can lead to PCOS and ultimately infertility. Therefore, lifestyle modifications, including hygiene, use of probiotics, and treatment of vaginal infections, are recommended in the management of PCOS. Keywords: Life style, Infertility, Polycystic ovary syndrome, Reproductive health, Vaginitis. P-35 The impact of the BETTER model on sexual aspects of infertility: A narrative review Adresi F1, Radaie A2, Farajkhoda T3. Research and Clinical Center for Infertility, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. School of Nursing and Midwifery, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Research Center for Nursing and Midwifery Care, Non-Communicable Diseases Research Institute, Department of Midwifery, School of Nursing and Midwifery, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Email: adresi.f1371@gmail.com Infertility is one of the major challenges, which affects the psychological, social, and sexual aspects of couples. Sexual problems, as a critical aspect of quality of life, are more prevalent in infertile couples which require special attention. The bring up, explain, tell, timing, educate, and record (BETTER) model has been introduced as a comprehensive counseling approach to improve sexual quality of life and reduce infertility-related stress. This study aimed to evaluate the impact of the BETTER model on various sexual aspects of infertile couples' lives. In this narrative review study, relevant Persian and English articles were collected from Google Scholar, PubMed, Scopus, and Cochrane databases. Keywords such as "infertility", "counseling", "BETTER Model", and "sexual" were reviewed without a time frame. After an initial review, 187 articles were obtained, and finally 7 articles were further reviewed. The use of the BETTER model has a significant effect on improving sexual and psychological problems in infertile women, including: improved sexual function, reduced anxiety and psychological stress, Increased marital satisfaction, and improved quality of sexual life. However, limitations such as the lack of long-term follow-up, focus on infertile women, and the lack of joint studies in couples should be further investigated. The BETTER model has a role as a comprehensive model in improving sexual aspects in infertile women. Incorporating this model into infertility counseling programs can be a step towards improving the mental health and quality of sexual life. Keywords: Infertility, BETTER model, Sexual counseling, Sexual function, Marital satisfaction. P-36 The importance of psychological and social support for infertile women Mokhberi F1, ZareMobini F2, Asadi L2. Department of Midwifery, School of Nursing and Midwifery, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Research Center for Nursing and Midwifery Care, Non-Communicable Diseases Research Institute, Department of Midwifery, School of Nursing and Midwifery, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Email: fatemehzaremobini@yahoo.com Infertility is a difficult condition that has a significant psychological impact on women. Providing adequate psychological and social support can reduces psychological problems in infertile women. The purpose of the present study was to assess the importance of psychological and social support for infertile women. In this narrative review study, articles were searched using the keywords "infertility", "social support" and "psychological support" through Web of Science, SID, Scopus, and PubMed and Google Scholar database, and the most relevant articles published from 2020-2025 were reviewed. The inclusion criteria for studies included full-text articles, publication in Persian or English, and descriptive, analytical, and experimental studies. The articles were reviewed by 2 people and screened based on title and abstract, and the quality of the articles was assessed using the CASP and STROBE tools. The results were derived from 6 related studies that had full text. A review of studies showed that when women have family support and higher levels of education, they are less anxious about their infertility situation. A person with a social network is better off when facing adversity than a person without support or without a support network (p < 0.05). Social and psychological support is effective on the quality of reproductive life. With an increase in the level of social support, symptoms of anxiety, depression, and negative self-image in couples receiving infertility treatment decreased. By increasing the level of social and psychological support received by women undergoing infertility treatment, symptoms of depression, stress, negative self-concept, and worry about infertility are reduced, and it has a positive effect on the quality of reproductive life. Keywords: Female infertility, Psychosocial support, Social support. P-37 The impact of logotherapy on acceptance and self-awareness in the mental health of infertile couples: A systematic review Zarezadeh Mehrizi F1, Eftekhari A2. Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Department of Nursing, Meybod School of Nursing, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Email: Adel.eftekhari.66@gmail.com Background: Infertility is a significant global health issue that presents serious challenges for families. A diagnosis of infertility can lead to stressful experiences and negative emotional reactions, such as anger and isolation, which can impact individuals mental health. Acceptance of this condition is essential for those facing infertility, and developing self-awareness can facilitate this process. Objective: This study investigated the impact of meaning therapy on acceptance and self-awareness in the mental health of infertile couples. Materials and Methods: This study employs a systematic review methodology. It involved a comprehensive search using keywords from the phrases "Logotherapy", "acceptance", and “self-awareness” across reliable databases such as SID, Magiran, Google Scholar, and PubMed. The review focused on literature published from 2015-2023. The included inputs comprised quantitative studies, qualitative studies, mixed methods, conference papers, theoretical articles, experimental studies, protocols, and discussions or commentaries related to factors affecting acceptance and self-awareness in the mental health of infertile couples. 2 researchers independently selected a total of 120 articles for review. Studies that were not relevant to the topic were excluded based on analysis and inclusion criteria. After searching and eliminating duplicate articles through objective screening, a total of 98 articles were reviewed, of which 63 were ultimately selected for the study. Results: The studies indicate a valuable consensus among experts regarding the integration of meaning therapy in addressing infertility and enhancing the mental health of couples. Meaning therapy plays a critical role in fostering acceptance and self-awareness among infertile patients. Given the numerous psychological challenges faced by infertile individuals, it is essential to explore intervention methods that can help alleviate these issues. Enhancing acceptance of negative emotions can reduce stress and improve overall quality of life, enabling couples to better understand each other’s feelings and needs. Self-awareness, self-esteem, and self-confidence are fundamental indicators of an individual’s strengths and weaknesses. Increased self-awareness can lead to improved communication between partners and heightened empathy. Furthermore, since infertility can affect individuals throughout their lives, it necessitates greater attention and support from family, medical staff, and society to promote adaptability and enhance quality of life. Thus, the findings underscore the need for comprehensive training programs for nurses to equip them with the necessary skills in meaningful therapy for the care of infertile individuals. Conclusion: Meaning therapy positively impacts the mental health of couples, particularly in fostering acceptance and self-awareness among infertile individuals. Given its beneficial effects observed in this and other studies, it is advisable for service providers and managers to incorporate this method into treatment approaches aimed at enhancing acceptance and self-awareness in various therapeutic contexts. Keywords: Logotherapy, Acceptance, Self-awareness, Infertility. P-38 The role of artificial intelligence in the care of participants with infertility: A systematic review Zarezadeh Mehrizi F1, Eftekhari A2. Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Department of Nursing, Meybod School of Nursing, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Email: Adel.eftekhari.66@gmail.com Background: Infertility is a significant reproductive health issue affecting millions of couples worldwide. Despite advances in medical science, more than half of infertility cases remain unexplained, highlighting the need for innovative diagnostic and treatment models. Current treatment options often involve substantial financial and diagnostic challenges, contributing to a significant psychological burden for those affected. Therefore, there is a pressing need for new tools to enhance infertility care. Artificial intelligence (AI) is emerging as a transformative force, offering great potential to improve medical care, particularly in the field of infertility. Objective: This study aims to investigate the role of AI in the care of participants experiencing infertility. Materials and Methods: This study employed a systematic and prospective review methodology. It involved a comprehensive search using the keywords "artificial intelligence", "infertility", and "patient care" across reliable databases such as Scopus, ISI, SID, Magiran, Google Scholar, and PubMed. The review focused on literature published from 2015-2023. The included entries comprised quantitative, qualitative, and mixed-methods studies, as well as articles, reviews, experimental studies, protocols, and discussions related to the role of AI in the care of patients with infertility. 2 independent researchers selected a total of 80 articles for review. Studies deemed irrelevant to the topic were excluded based on analysis and inclusion criteria. After searching and eliminating duplicate articles through objective screening, a total of 50 articles were reviewed, of which 30 were ultimately selected for the study. Results: The study’s results indicate that experts foresee valuable insights regarding the integration of AI into infertility care. AI is defined as the capability of engineered systems to learn, process, and analyze data. The incorporation of AI into the clinical management of infertility represents a transformative and essential approach for optimizing treatment outcomes, enhancing assisted reproductive technologies, and improving participant’s communication. AI can analyze clinical and laboratory data to identify factors contributing to infertility, assess sperm and egg quality, and select the most effective fertility treatment options. This capability allows for a more personalized approach and enables healthcare providers to engage in meaningful discussions with participants about the feasibility and likelihood of clinical interventions. Furthermore, AI can aid in counseling and providing accurate information to participants, which can enhance awareness, reduce stress, optimize diagnostic and treatment processes, and decrease the time and costs associated with participant’s care. Conclusion: Artificial intelligence holds significant potential to enhance the diagnosis and treatment of infertility, as well as overall participant’s care. Given the recent advancements in AI technologies, it is anticipated that these tools will increasingly be utilized in clinical settings, improving treatment outcomes and the quality of life for participants. However, to fully leverage this technology, further research, improved data quality, and careful consideration of ethical and privacy issues are necessary. This systematic review demonstrates that the integration of artificial intelligence in infertility management can contribute to improved clinical outcomes and enhance participant’s quality of life. Keywords: Artificial intelligence, Infertility, Patient care. P-39 Geomorphological influences on gut microbiome and human fertility: An integrative perspective Khademghasemi M1, Esmaeili F2, Rezaei MM3. Department of Geography, Ferdowsi University, Mashhad, Iran. Department of Cell Biology, Islamic Azad University, Mashhad Branch, Mashhad, Iran. Department of Reproductive Biology, Shahid Sadougi University of Medical Sciences, Yazd, Iran. Email: khademghasemi@gmail.com Geomorphology, the scientific discipline examining landforms and geological processes, exhibits a profound interconnection with human health. Recent investigative research demonstrates that geomorphological variations significantly impact gut microbiome composition and functionality, which play a critical role in health and disease mechanisms. This comprehensive study explores the intricate relationships between geomorphological factors, gut microbiome dynamics, and consequential health outcomes, with specific emphasis on fertility challenges. This analytical review study was based on 21 articles published from 2018 onwards. Environmental topographical characteristics fundamentally influence water and soil quality, subsequently affecting agricultural productivity, ecosystem diversity, and nutritional environments. Variations in elevation, soil composition, and environmental conditions create unique microbial landscapes that potentially modulate gut microbiome diversity. Empirical evidence, substantiates that populations inhabiting different geographical elevations demonstrate distinctly different gut microbiome profiles, potentially attributable to adaptive microbial responses to specific environmental conditions like oxygen pressure, temperature variations, and dietary compositions. Gut microbiome disruptions are increasingly recognized as significant contributors to reproductive health challenges. Intestinal dysbiosis can precipitate chronic inflammatory responses, oxidative stress, and metabolic alterations that directly impact reproductive functionality. Research by Wang et al. provides compelling evidence of reduced microbial diversity and increased pathogenic bacterial presence in infertile women, underscoring the critical importance of maintaining optimal gut microbiome equilibrium for reproductive health. Conclusively, geomorphological factors exert substantial influences on human health through intricate gut microbiome modulation mechanisms. Enhanced understanding of these complex interrelationships promises innovative approaches to public health improvement and potential fertility interventions. While current research provides promising insights, further comprehensive investigations are imperative to delineate underlying mechanisms and explore practical applications. Future research should prioritize multidisciplinary approaches, integrating geomorphological, microbiological, and reproductive health perspectives to develop more nuanced, targeted interventional strategies. Keywords: Gastrointestinal microbiome, Environmental medicine, Geomorphology. P-40 Protective role of naringenin in mitigating steroidogenesis disturbances in human granulosa cells from normal and polycystic ovaries Shafieinia Sh1, Khodabandeh Z2, Masjedi F3. Department of Biology, College of Sciences, Shiraz Branch, Islamic Azad University, Shiraz, Iran. Stem Cells Technology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran. Nephro-Urology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran. Email: masjedi_f@sums.ac.ir Background: Estradiol and progesterone are the primary steroid hormones that may be crucial throughout the follicular and luteal stages of the menstrual cycle, oocyte fertilization, and embryo implantation. The granulosa cells (GCs) of patients with polycystic ovarian syndrome (PCOS) do not enhance the expression of aromatase and 3β-hydroxysteroid dehydrogenase (3β-HSD), resulting in significantly reduced release of estrogen and progesterone. Naringenin, a principal constituent of grapefruit, has been documented to function as a modulator of some reproductive pathways. Objective: This study evaluated the role of naringenin in regulating the endocrine activity of granulosa cells in women with PCOS and those without. Materials and Methods: This experimental study was conducted on ovarian GCs obtained from 40 women who visited Shiraz Ghadir Mother and Child Hospital, Shiraz, Iran for in vitro fertilization or intracytoplasmic sperm injection between November 2023 and August 2024. The control group (N-GCs) included 20 women with normal ovarian function, diagnosed primarily with male factor infertility, tubal pathology, unexplained infertility, or those participating as egg donors or having a normal ovarian reserve. The case group (PCO-GCs) consisted of 20 women diagnosed with PCOS based on the Rotterdam criteria, as determined by a gynecologist. Eligible participants were women aged between 18 and 35 with a body mass index ranging from 18.5-30 kg/m². Individuals were excluded if they had significant medical conditions such as other causes of hyperandrogenism, thyroid disorders, endometriosis, chronic metabolic syndrome, or diabetes, or if they reported cigarette smoking or alcohol consumption. The GCs were obtained from dominant follicles using follicular aspirates on the day of oocyte extraction. The GCs were cultivated in Dulbecco's modified Eagle's medium/F12 media. To investigate the impact of naringenin on aromatase and 3β-HSD activities, GCs (4×106 cells) were separated into 2 groups and cultivated in 6-well plates for 48 hr, with or without naringenin (200 µM). The media were collected to assess estradiol and progesterone as markers of aromatase and 3β-HSD activity. Results: The basal estradiol (p = 0.008) and progesterone (p = 0.013) levels in the PCOS group were considerably lower than in the normal group. Naringenin-treated GCs exhibited a significant increase (p < 0.001) in total estradiol and progesterone release after 48 hr compared to untreated GCs. Nonetheless, naringenin therapy did not restore sex hormone production to normal levels. Conclusion: Our findings indicated that ovarian aromatase and 3β-HSD activities in PCOS were diminished compared to healthy women. An enhancement of aromatase and 3β-HSD activities marks the stimulatory effect of naringenin. This influence on steroidogenic enzyme activity suggests a post-transcriptional modulation of these enzymes by naringenin. Keywords: Estradiol, Naringenin, Progesterone, PCOS, Granulosa cells. P-41 Ameliorative effects of lycopene on sperm biochemical parameters during cryopreservation in the asthenozoospermic men Mohammadi M1, Soleimani Mehranjani M1, Esmaili A2. Department of Biology, Faculty of Basic Sciences, Arak University, Arak, Iran. Department of Biotechnology, Faculty of Medicine, Guilan University of Medical Sciences, Guilan, Iran. Email: m-soleimani@araku.ac.ir Background: Asthenozoospermia is considered one of the most prevalent causes of male infertility. In asthenozoospermia cases where enough suitable sperm cannot be provided for assisted reproductive technology or where it is impossible to collect fresh semen from the men on the day of assisted reproductive technology for any reason, cryopreservation can help to recover sperm and oocyte at the same time. Cryopreservation of human semen increases reactive oxygen species, leading to oxidative damage to the sperm. Therefore, adding an antioxidant to the freezing medium could be useful. Lycopene, as a red carotenoid and powerful antioxidant, has many positive effects on sperm biochemical parameters. Objective: This experimental study aims to assess the effect of lycopene supplementation on sperm biochemical parameters during cryopreservation in asthenozoospermia men. Materials and Methods: Semen samples were collected from 30 asthenospermic men in 1403 at Mehr Infertility Treatment Center, Rasht, Iran. Each sample was then divided into 3 groups (n1, n2, n3): n1: control (fresh), n2: freeze (treated with cryoprotectant alone), and n3: freeze + lycopene (treated with cryoprotectant and 5 µmol/L lycopene). 30 samples were examined in each group. In the freezing groups, samples were cryopreserved with human sperm freezing medium and rapid freezing method. In each sample, using an enzyme-linked immunosorbent assay, the level of sperm antioxidants, including catalase, glutathione, and superoxide dismutase, and the level of sperm malondialdehyde (MDA) were investigated. Results: There was a significant decrease in the mean levels of sperm antioxidants in the freeze group compared to the control counterpart (p < 0.001). At the same time, there was a significant increase in the mean sperm levels of MDA (p < 0.001). Moreover, in the freeze+ lycopene group, the mean levels of antioxidants increased significantly (p < 0.001), while the mean levels of MDA decreased significantly compared to the Freeze group (p < 0.001). Conclusion: Given our findings, lycopene ameliorates the adverse effects of cryopreservation on sperm quality in asthenozoospermic men by reducing reactive oxygen species production and preventing its undesired effects on sperm function by increasing sperm antioxidants, and reducing MDA levels. Keywords: Asthenozoospermia, Cryopreservation, Biochemical parameters, Oxidative stress, Lycopene. P-42 Evaluation of the effect of human testicular cell conditioned media on the in vitro development of follicles from cryopreserved human ovarian cortical pieces: A potential approach for fertility preservation Khalili MA1, Aflatoonian B1, 2, 3, Vatanparast M4. Department of Reproductive Biology, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Stem Cell Biology Research Center, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Research and Clinical Center for Infertility, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Molecular Medicine Research Center, Research Institute of Basic Medical Sciences, Rafsanjan University of Medical Sciences, Rafsanjan, Iran. Email: mahboob_vatan@yahoo.com Background: Ovarian tissue (OT) cryopreservation is a method for fertility preservation in female cancers, and after warming, the current standard approach for its use is OT transplantation. However, this cannot be an option in hematologic cases, due to the high risk of cancer reimplantation after remission. In vitro growth of isolated follicles is an alternative for OT transplantation. Objective: The aim was to evaluate the effects of the human testicular cell conditioned medium (HTCCM) on the in vitro growth of isolated follicles, after 2 methods of ovarian cryopreservation: vitrification and slow freezing. Materials and Methods: In this experimental study, human ovarian cortical strips from 8 cancer patients who were candidates for fertility preservation at our institute were frozen and then cultured in a multiple-step system, after thawing. The culture media were a routine culture medium or a medium containing HTCCM. Folicullogenesis, the proportion of morphologically normal follicles, follicle diameter, hormone production, and gene expressions (PTEN, BMP-15, PDGF, GDF-9, and GAPDH) were analyzed during 21 days of culture.  Results: Follicular morphology was the same after the 2 cryopreservation methods, and decreased during the organ culture (p < 0.001). However, while follicular growth occurred independently in the slow-freezing group, folliculogenesis was activated in the vitrified group in the presence of HTCCM (p = 0.081). There were no significant differences in the estradiol or progesterone secretions, either in the presence or absence of HTCCM (p = 0.530). The secreted hormonal levels didn’t differ between the 2 cryopreserved groups (p = 0.640). In addition, the folliculogenesis gene expressions didn’t show significant differences between the cultured groups, except for BMP-15, in the slow/HTCCM (p < 0.001). Follicle diameter was higher in the slow/HTCM, only compared to vitrification culture in the absence of HTCM (p = 0.023). Conclusion: Although HTCCM did not affect the follicular morphology or hormone secretion, it can compensate for the observed delay in ovarian folliculogenesis, as it could promote gene expression in the ovarian in vitro culture. Keywords: Fertility preservation, Ovarian culture, Follicle culture, Testicular interstitial cell, Conditioned medium, Folliculogenesis. P-43 Papaverine ameliorates sperm biochemical parameters and oxidative stress in asthenozoospermic men during cryopreservation Azizi Z1, Soleimani Mehranjani M1, Shariatzadeh SMA1, Najdi N2, Azimi AS1. Department of Biology, Faculty of Science, Arak University, Arak, Iran. Department of Obstetrics and Gynecology, School of Medicine, Arak University of Medical Sciences, Arak, Iran. Email: zahraazizi4049@gmail.com Background: Asthenozoospermia, characterized by reduced or complete loss of sperm motility, is a prevalent cause of male infertility. Sperm cryopreservation, vital for assisted reproductive technologies, induces cryoinjury, leading to structural and functional sperm impairment through elevated oxidative stress, DNA fragmentation, and apoptosis. Excessive reactive oxygen species (ROS) generation during freeze-thaw cycles heightens oxidative damage, particularly in asthenozoospermic men, reducing fertility potential. Papaverine (PPV), a powerful antioxidant, effectively reduces oxidative damage, with prior studies showing its protective effects on cryopreserved normozoospermic men. Objective: In this study, the effects of PPV on sperm biochemical factors and intracellular ROS levels were investigated in asthenozoospermic men during cryopreservation. Materials and Methods: Semen samples from 30 asthenozoospermic men, obtained at the Amir-AL-Momenin Infertility Treatment Center, Arak, Iran, between November 2023 and May 2024, were examined in this experimental in vitro study. Each sample was divided into 3 groups: control (fresh semen), freeze (cryoprotectant only), and freeze + PPV (cryoprotectant + 100 µM PPV). Cryopreservation involved a standardized sperm freezing medium and a rapid vitrification technique. Sperm malondialdehyde (MDA), total antioxidant capacity (TAC), and antioxidant enzymes catalase, glutathione, superoxide dismutase, were measured via enzyme-linked immunosorbent assay. Intracellular ROS levels were assessed using the DCFH-DA fluorescent probe (Kiazist ROS Assay Kit, Iran) with a partec pas flow cytometer. Data were analyzed using FlowJo™ software, and results were expressed as mean fluorescence intensity. Results: The freeze group exhibited significantly reduced mean levels of glutathione, catalase, superoxide dismutase and TAC (all p < 0.001) and elevated mean MDA and ROS levels (p < 0.001) compared to the control group. Conversely, the freeze + PPV group demonstrated significantly enhanced antioxidant enzyme levels and TAC (p < 0.001 for all), along with reduced MDA (p < 0.001) and ROS (p = 0.040) levels, compared to the freeze group. Conclusion: This study demonstrated that the addition of PPV to the sperm freezing medium effectively reduces oxidative stress and intracellular ROS levels in cryopreserved sperm in asthenozoospermic men. These findings suggest that PPV has the potential to mitigate freeze-thaw-induced damage and improve outcomes in assisted reproductive technology. Keywords: Papaverine, Asthenozoospermia, Sperm cryopreservation, Oxidative damage. P-44 Supplementation of freezing media with zinc and melatonin improves the sperm functional parameters in asthenozoospermic men Dorostghoal M, Bahadoran S. Department of Biology, Shahid Chamran University of Ahvaz, Ahvaz, Iran Email: mdorostghoal@scu.ac.ir Background: Decreased sperm motility, viability, and fertilization potential have been reported following the freezing and thawing process. In this regard, to enhance human sperm resistance to the cryopreservation stress a variety of cryoprotective substances have been proposed. Objective: The present study aimed to assess the effects of zinc and melatonin supplementation to freezing medium on spermatozoa in asthenozoospermic men. Materials and Methods: In this experimental study, 10 semen samples of asthenozoospermic men attending the Infertility Research and Treatment Center of ACECR Khuzestan, Ahvaz, Iran from September 2023 to October 2024 were prepared and split into 2 equal aliquots. Smokers, alcohol consumers and men with history of varicocele, genital tract infection, chronic illness and serious systemic diseases were excluded from the study. A freezing medium containing 50 mM ZnSO4 and 1 mM melatonin were mixed with aliquots and then treated samples were cryopreserved using the slow freezing protocol in liquid nitrogen. Samples were thawed and washed after 2 wk and then sperm viability, motility and functional tests were analyzed. Results: Our study showed that the addition of zinc and melatonin to the freezing medium after thawing significantly improves sperm motility and viability. Also, compared to the zinc and melatonin- free group membrane the acrosomal integrity of human sperm were higher after thawing. Conclusion: Our results showed that the addition of zinc and melatonin to the freezing medium could improve post-thaw quality of cryopreserved human sperm. Keywords: Cryopreservation, Zinc, Melatonin, Spermatozoa. P-45 Optimizing assisted reproductive technologies: Evaluating the role of polyvinylpyrrolidone, hyaluronic acid, and thymoquinone in sperm immobilization and embryo development Mohseni M1, Nabi A2, 3, Pourentezari M4. Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Research and Clinical Center for Infertility, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Andrology Research Center, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Department of Biology and Anatomical Sciences, Faculty of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Email: maede.mhsni@gmail.com Poly Vinyl Pyrrolidone (PVP) is a commonly utilized synthetic polymer known for its biocompatibility. It plays an important role in assisted reproductive technologies, especially in the process of intracytoplasmic sperm injection (ICSI). PVP helps to immobilize sperm and safeguards oocytes during the microinjection process, enhancing the chances of successful fertilization and the development of embryos. The aim of this assessment is to explore the functions of PVP, hyaluronic acid (HA), and thymoquinone (TQ) in the immobilization of sperm and the quality of embryos, with the intention of enhancing the results of assisted reproductive technologies. A comprehensive narrative review was carried out utilizing data gathered from PubMed, Google Scholar, and Science Direct, with the cutoff date being November 2024. The search terms employed included "PVP", "ICSI", "Hyaluronic acid", "Thymoquinone", and "sperm immobilization". Original research articles and review papers that examined the impact of these compounds on fertilization and embryo quality were considered for inclusion. Studies that were not in English or did not undergo peer review were omitted from the analysis. Research indicates that incorporating PVP into microinjection solutions can improve embryo growth; however, high levels or extended exposure may negatively affect sperm DNA integrity. On the other hand, HA presents a more natural and safer option, enhancing fertilization rates and embryo quality by favoring mature sperm with intact DNA. Additionally, TQ, a substance extracted from Nigella sativa, shows promise in effectively immobilizing sperm with reduced toxicity, though its clinical use remains less widespread than that of HA. PVP remains an important part of ICSI procedures, but HA is gaining recognition as a better choice because of its safety and efficiency in selecting sperm and promoting embryo growth. Although TQ shows promise, it needs more testing to confirm its effectiveness. Keywords: Poly vinyl pyrrolidone, Intracytoplasmic sperm injection, Hyaluronic acid, Thymoquinone, Sperm immobilization, Embryo quality. P-46 Synthesis, characterization and investigation of the effects of soy protein nanoparticles containing sambucus nigra extract on the human sperm parameters after freezing: In vitro study Shamsadini FS1, Eslami H1, Zare-Zardini H1, Fesahat F2, Mangoli E3, Ansari M1. Department of Biomedical Engineering, Meybod University, Meybod, Iran. Reproductive Immunology Research Center, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Research and Clinical Center for Infertility, Yazd Reproductive Science Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Email: hadizarezardini@gmail.com Background: Cryopreservation followed by thawing is the standard method for preserving male fertility, though it adversely affects sperm quality by impairing motility, morphology, and overall functionality. Objective: This study aimed to synthesize and characterize soy protein nanoparticles (SPN) loaded with Sambucus nigra extract (S.nigra) and evaluate their effects on human sperm parameters following cryopreservation. Materials and Methods: This experimental in vitro study was conducted in 2023 at Shahid Sadoughi University of Medical Sciences, Yazd, Iran. SPN and SPN containing S.nigra extract (S.nigra-SPN) were synthesized and characterized. Sperm samples from healthy donors were divided into 5 groups: control (before freezing); control, SPN, S.nigra, and S.nigra-SPN (after freezing). The treated groups were incubated for 2 hr at room temperature prior to rapid freezing. 20 samples were analyzed for post-thaw sperm motility, morphology (diff-quick staining), and chromatin integrity. Results: Encapsulation efficiency and loading capacity were 90% and 36.16%, respectively, and characterization confirmed successful nanoparticle synthesis. The S.nigra extract was released in a controlled manner, and both blood compatibility and biocompatibility were verified. Post-thaw analysis revealed a significant decline in sperm parameters across all groups (p < 0.05); however, those treated with S.nigra, SPN, and S.nigra-SPN showed improved outcomes compared to the controls. Among them, the S.nigra-SPN group demonstrated the most notable improvements in motility and morphology (p ≤ 0.001). Additionally, DNA fragmentation (p = 0.07) and chromatin damage (p = 0.28) were reduced insignificant in the nanoparticle-treated groups. Conclusion: SPN enhances post-thaw sperm quality, stabilizes S.nigra extract delivery, and synergizes effects, aiding assisted fertilization outcomes. Keywords: Spermatozoa, Cryopreservation, Sambucus nigra, Nanoparticles, Soy protein. P-47 Study on the sensitization of sexual cycle to circadian light-dark conditions and the ameliorative effect of melatonin in Wistar rat Varanloo R, Behnam-Rassouli M, Koochakzaie AH. Department of Biology, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran. Email: behnam@um.ac.ir Background: It seems that the sexual cycle is highly sensitive to environmental light-dark conditions; i.e., halted and irregulated during short-day and long-day conditions, respectively. These effects are mediated by the pineal gland, which converts light-dark signals into a chemical signal (melatonin [Mel]). Objective: The aims of this study were firstly, to evaluate the effects of long day (short night) conditions on the regularity of estrus cycle and the probable spatial working memory deficits and secondly, the curing effects of oral administration of ML on the above parameters. Materials and Methods: A total of 30 female Wistar rats (3-4 month, 220 ± 30 gr) were randomly divided into 6 groups (n = 5/each). Experimental groups were categorized as control, control + Mel, experimental 1, experimental 1 + Mel, experimental 2, and experimental 2 + Mel. Light conditions included standard light: dark (12 hr light/ dark cycle), short night (16 hr light/8 hr dark), and long night (20 hr light/4 hr dark) with free access to food and water was provided. They were exposed to different light conditions (light-dark cycles) for 6 wk. Mel was administered at a final concentration of 0.8 µg/mL dissolved in drinking water. Control groups received a placebo (ethanol). To check the regularity of the sexual cycle daily vaginal smear cytology was done. During the final week, elevated plus maze test was undertaken to assess the probable spatial working memory deficit. Results: Female rats kept in long light conditions show severe irregularity in estrus cycles and Mel administration significantly reduced the number of irregular cycles (p = 0.0006). Exposure to night-time light and Mel treatment had no obvious effect on spatial working memory. Conclusion: Based on the results obtained from the present study, it can be concluded that Mel administration may correct the disturbances of the sexual cycles via its strong anti-oxidant properties.  Keywords: Sexual cycle, Light pollution, Melatonin, Rat. P-48 The effects of chronic sleep deprivation combined with circadian rhythm disruption on fertilization rate and embryo development in BALB/c mice Sanjari A1, Hassanzadeh Taheri MM1, Saebipour MR1, Maleki B2, Doostabadi MR2. Department of Anatomy, School of Medicine, Birjand University of Medical Sciences, Birjand, Iran. Infertility Center, Department of Obstetrics and Gynecology, Mazandaran University of Medical Sciences, Sari, Iran. Email: mohamadrezadoostabadi@gmail.com Background: Sleep is a crucial physiological process integral to daily functioning, and insufficient sleep is a significant risk factor for overall health. In contemporary society, various factors, including shift work and lifestyle changes, have adversely impacted sleep and circadian patterns. Given that sleep and circadian patterns physiologically regulate the synthesis, secretion, and metabolism of hormones essential for reproduction. Sleep deprivation has been identified as a contributing factor to infertility in both men and women; however, its simultaneous effect with the circadian rhythm disruption has not been investigated. Objective: This study aimed to investigate the effects of chronic sleep deprivation and circadian rhythm disruption on fertilization rate and embryo development in BALB/c mice. Materials and Methods: In this experimental study, 40 female BALB/c mice (8 wk, 20-30 gr), were divided into 5 equal groups (n = 8/each): control group, circadian disruption, daily sleep deprivation (4 hr), night sleep deprivation (4 hr), and daily sleep deprivation with circadian disruption. The experimental conditions for the studied groups were implemented using a sleep deprivation device and a light cycle alteration schedule of 3.5 D: 3.5 L. After 4 wk, the mice were euthanized, and blood and oviduct samples were collected to evaluate cortisol hormone levels, cleavage, compact and blastocyst embryo formation rate. Results: The findings of the investigation indicated that the mean weight difference of the mice before and after the intervention, and the fertilization rate, did not represent statistically significant differences compared to the control group. A notable increase in the mean cortisol hormone level was observed exclusively in the SD + CD group, alongside a significant reduction in the 2, 4, and 8-cell embryo formation rate within this group. Additionally, there was a considerable decline in the compact and blastocyst embryo formation rate across all intervention groups (p < 0.05). Conclusion: Contrary to the notion that during the early stages of cleavage, only the combination of sleep deprivation and circadian disruption adversely impacts the cleavage embryo formation rate, in the late stages of cleavage, both sleep deprivation and circadian disruption, whether occurring separately or together, can detrimentally affect on the compact and blastocyst embryo formation rate.  Keywords: Embryos, Cortisol, Sleep deprivation, Circadian rhythm disruption. P-49 Comparative study of learning and memory capabilities during proesterous and diestrous stages of the sexual cycle in female Wistar rats Gazmeh Z, Behnam-Rassouli M, Moghimi A. Department of Biology, Faculty of Sciences, Ferdowsi University of Mashhad, Mashhad, Iran. Email: zahragazme467@gmail.com Background: In females, during each sexual cycle, significant fluctuations occur in the production and secretion of ovarian steroid hormones (estrogen and progesterone in the follicular and secretory phases of the ovary, respectively). At the brain level, changes in the excitability of neural circuits caused by hormonal fluctuations manifest as changes in mood and emotional behaviors, etc. Objective: The present study aims to study learning and memory capabilities during the diestrus (DIE) and proestrus (PRO) phases of the sexual cycle of rats. Materials and Methods: In this experimental study 14 mature femal Wistar rats (200-220 gr, 3-4 months) were randomly divided into PRO and DIE groups (n = 7/each). During the experimental period, all rats were undertaken daily vaginal smear cytology and then entered into the behavioral tests: elevated plus maze (for anxiety assessment), open field (for seeking), shuttle box (for memory evaluation). At the end, the results of each test were statistically analyzed and compared between 2 groups. Results: In the elevated plus maze test, the measured parameters were the percentage of entries into the open arm and the percentage of time spent in the open arms. The results showed that, in compare with PRO group, in DIE group the number of entries into the open arm and the time spent in the open arm were significantly reduced (p < 0.0001). In the open field test the measured parameter was the time spent in the central boxes, in compare to peripheral boxes. The results showed that the seeking behavior was significantly higher in PRO group than the DIE group (p < 0.051). In the shuttle box test, the measured parameter was the delay time for the entry into the dark chamber. The results showed that the latency to enter the dark compartment was significantly (p < 0.05) longer the PRO group than DIE group. Conclusion: It can be concluded that this difference in the above parameters are due to the effects of the fluctuations in sex hormones. It seems that, in compare to PRO group, rats in DIE group were more sensitive to stressfull conditions, less restless and more alert. Keywords: Sexual cycle, Memory, Learning, Female rat. P-50 Effects of theophylline on sperm parameters in asthenozoospermic men during cryopreservation Sheikh Hosseini Lori A1, Soleimani Mehranjani M1, Shariatzadeh SMA1, Cheraghi E2, Jannatifar R3. Department of Biology, Faculty of Science, Arak University, Arak, Iran. Department of Biology, Faculty of Sciences, University of Qom, Qom, Iran. Department of Reproductive Biology, Academic Center for Education Culture and Research (ACECR), Qom, Iran. Email: sh.hosseini993@gmail.com Background: Asthenozoospermia (AZS), characterized by reduced or absent sperm motility in fresh ejaculates, is a leading cause of male infertility. Sperm freezing, an integral part of assisted reproductive technologies helps preserve male fertility but often compromises sperm quality. Theophylline, a xanthine derivative with antioxidant properties, functions as a phosphodiesterase inhibitor, enhancing intracellular cyclic adenosine monophosphate (cAMP) levels and cAMP-dependent processes like sperm motility. While theophylline has shown promise in improving viable sperm quality, its effect on sperm freezing in AZS individuals remains unclear. Objective: This study aimed to evaluate the effect of theophylline on sperm parameters during the freezing-thawing process in AZS men. Materials and Methods: In this experimental study, 30 semen samples from AZS men referred to the Roya infertility treatment center at Qom University Jihad, Qom, Iran were collected into sterile containers through masturbation in 2023-2024. Each sample was divided into 3 groups: control (fresh semen), freeze (frozen with cryoprotectant only), and freeze + theophylline (frozen with cryoprotectant supplemented with 0.05 mM theophylline). Cryopreservation was performed using a human sperm-freezing medium and a rapid freezing method. Sperm motility, viability (assessed via eosin-nigrosin staining), and morphology (evaluated using the Diff-Quick Kit) were analyzed according to World Health Organization criteria. Results: The freeze-thaw group showed a significant reduction in the mean percentages of sperm motility, viability, and normal morphology compared to the control group (p = 0.001). In contrast, the freezing + theophylline group demonstrated a significant increase in sperm motility and viability (p = 0.001) and an increase in normal morphology (p = 0.035) compared to the freezing group. Conclusion: This study demonstrated that supplementing the cryoprotectant medium with theophylline significantly improves sperm motility, viability, and morphology in AZS men, emphasizing its potential to reduce cryopreservation damage and enhance fertility outcomes in assisted reproductive technologies. Keywords: Asthenozoospermic men, Cryopreservation, Theophylline, Sperm parameters. P-51 Selenium enhances sperm quality in asthenozoospermic men during the freeze-thaw process Sheikh Hosseini Lori A1, Soleimani Mehranjani M1, Shariatzadeh SMA1, Cheraghi E2, Jannatifar R3. Department of Biology, Faculty of Science, Arak University, Arak, Iran. Department of Biology, Faculty of Sciences, University of Qom, Qom, Iran. Department of Reproductive Biology, Academic Center for Education Culture and Research (ACECR), Qom, Iran. Email: sh.hosseini993@gmail.com Background: Sperm freezing is a widely used and essential technique for preserving and protecting fertility. However, despite its importance in assisted reproduction centers, the process can reduce sperm quality due to oxidative stress. Incorporating antioxidants into the freezing medium can help protect the structural and functional characteristics of sperm from freezeـ thaw induced damage. Selenium, a trace biological element and potent antioxidant, plays a crucial role in sperm production and enhancing quality of sperm parameters. Objective: In this study, the effect of selenium supplementation on sperm parameters in asthenozoospermic men during cryopreservation of semen samples was assessed. Materials and Methods: In this experimental study, semen samples were collected from 30 asthenozoospermic men referred to the infertility treatment center (Roya) at Qom University Jihad, Qom, Iran between December 2023 and May 2024. Each sample was divided into 3 groups including control (fresh semen), freeze (frozen with sperm-freezing medium only), and freeze + selenium (frozen with sperm-freezing medium supplemented with 2 µg/mL selenium). Cryopreservation was performed using a human sperm-freezing medium and a rapid freezing method. Sperm motility, viability (assessed using eosin-nigrosin staining), and morphology (evaluated using diff-quick staining) were analyzed before and after freezing, following the World Health Organization guidelines. Results: A significant reduction was found in the mean sperm motility, viability, and normal morphology in the freeze group compared to the control group (p = 0.001). However, these parameters significantly increased in the freeze + selenium group when compared to the freeze group (p = 0.001). Conclusion: Our data indicate that supplementing the freezing medium with selenium reduces the adverse effects of the freeze-thaw process on sperm quality in asthenozoospermic men, presenting a promising approach to increasing fertility outcomes in assisted reproductive techniques. Keywords: Asthenozoospermia, Cryopreservation, Selenium, Sperm parameters. P-52 Investigating the effects of melatonin administration on change in ovarian morphometric indices caused by light pollution in Wistar rats Koochakzaie AH, Behnam-Rasouli M, Varanloo R. Department of Animal Physiology, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran. Email: behnam@um.ac.ir Background: Light pollution is one of the most important factors disrupting biological rhythms in animals. In adult female mammals, the hypothalamus-pituitary-ovary axis is controlled by biological rhythms, and the effects of disturbances in this axis are manifested in its terminal part, namely, ovarian cycles. As the most important hormone regulating biological rhythms, melatonin plays an important role in reducing the effects of disruption in biological rhythms.  Objective: In this research, the effect of melatonin hormone administration on body weight, correction of ovarian cycle irregularity, ovarian structure, changes in catalase enzyme level and total serum antioxidant capacity, under the conditions of exposure to night light, have been investigated. Materials and Methods: In this experimental study, 30 female Wistar rats (220 ± 20 gr, 3-4 months) with a regular sexual cycle were divided into 6 groups (n = 5/each) including: control, control+melatonin, experiment 1, experiment 1+melatonin, experiment 2 and experiment 2+melatonin, respectively, under standard light conditions (12 hr light/dark cycle), short-term night light (16 hr light/8 hr dark) and long-term night light (20 hr light/4 hr dark) with free access to food and water. The groups treated with melatonin received melatonin as a solution in drinking water (At a dose of 0.8 μg/ml of water). During the test period, in order to evaluate the state of the sexual cycle, vaginal smear cytology was performed daily. At the end of the experimental period (day 42), under deep anesthesia, blood was taken from the rats first, and then the ovaries were removed and fixed in fixative solution. In the following, ovaries were used for histological investigations and blood serum was used to measure catalase enzyme level and total antioxidant capacity. Results: The weight measurement of the rats showed that compared to the beginning of the test period, the weight of the rats decreased at the end of the test period and the administration of melatonin prevented weight loss in the rats. This effect is especially significant when comparing the control group with the control+melatonin group (p < 0.039). The data obtained from the daily cytology of the vaginal smear indicate that the treatment with melatonin significantly prevents the occurrence of irregularity in sexual cycles caused by night light (p < 0.0006). Examination of the structure of the ovary also showed that melatonin was able to prevent the decrease in the volume of the ovary (p < 0.0019), decrease the number of corpora lutea (p < 0.0252), and decrease the ratio of the area of the corpora lutea to the cut area of the ovary (p < 0.0076). Treatment with melatonin also caused a significant decrease in the serum level of catalase enzyme (p < 0.0002). At the same time, administration of melatonin did not significantly change the total serum antioxidant capacity. Conclusion: Based on the obtained results, it can be concluded that melatonin hormone administration; 1) it prevents cyclic disorders in the hypothalamus hypophysis-ovarian axis caused by night light. 2) as a powerful natural antioxidant, it prevents tissue damage caused by oxidative stress, which is likely to occur during exposure to night light. Keywords: Light pollution, Melatonin, Ovary, Oxidative stress. P-53 Melatonin mitigates oxidative stress in asthenozoospermic men during freeze-thawing process Azizi Z1, Soleimani Mehranjani M1, Shariatzadeh SMA1, Najdi N2, Azimi AS1. Department of Biology, Faculty of Science, Arak University, Arak, Iran. Department of Obstetrics and Gynecology, School of Medicine, Arak University of Medical Sciences, Arak, Iran. Email: zahraazizi4049@gmail.com Background: Asthenozoospermia, characterized by reduced or absent sperm motility, is a major cause of male infertility. Sperm cryopreservation, a vital technique in assisted reproductive technologies, induces cryoinjury, compromising sperm structure and function through oxidative stress, DNA damage, and apoptosis. Excessive reactive oxygen species (ROS) production during freeze-thaw cycles exacerbates oxidative stress, particularly in asthenozoospermic men, impairing semen quality and fertilization potential. Melatonin, a potent antioxidant, may mitigate these effects. Objective: This study aimed to evaluate the effects of melatonin, on sperm biochemical parameters and intracellular ROS levels in cryopreserved samples from asthenozoospermic men. Materials and Methods: This experimental in vitro study involved semen samples from 30 asthenozoospermic men, collected at the Amir-AL-Momenin Infertility Center, Arak, Iran from November 2023 to Jun 2024. Samples were divided into 3 groups: control (fresh), freeze, and freeze + melatonin (treated with cryoprotectant + 1 mM melatonin). Samples in the freeze groups were cryopreserved using a human sperm freezing medium and rapid freezing protocol. Levels of malondialdehyde (MDA), total antioxidant capacity, and antioxidant enzymes (catalase, glutathione, superoxide dismutase) were quantified using enzyme-linked immunosorbent assay. Intracellular ROS levels were measured using the DCFH-DA fluorescent probe via a Partec Pas flow cytometer with a 488 nm argon laser. Results: The mean levels of sperm antioxidant enzymes and total antioxidant capacity in the freezing group were significantly reduced compared to the control group (p < 0.001). In contrast, the mean levels of sperm MDA and ROS in the freezing group showed a significant increase (p < 0.001). A significant increase in the sperm antioxidant enzymes and TAC levels (p < 0.001), along with a significant decrease in MDA (p < 0.001) and ROS (p = 0.005) levels were seen in the freeze + melatonin group compared to the freezing group. Conclusion: In conclusion, incorporating melatonin into the freezing medium significantly reduces the adverse effects of cryopreservation on the sperm of asthenozoospermic men by mitigating oxidative stress and lowering ROS levels. This protective role of melatonin highlights its potential as an effective antioxidant in improving the quality and functionality of cryopreserved sperm, ultimately contributing to better outcomes in assisted reproductive technology. Keywords: Melatonin, Cryopreservation, Asthenozoospermia, Reactive oxygen species, ART. P-54 Effects of in vitro and in vivo oocyte aging on fertilization and embryo development in BALB/c mice Sha'bani A1, Hassanzadeh Taheri MM1, Maleki B2, Doostabadi MR1. Department of Anatomy, School of Medicine, Birjand University of Medical Sciences, Birjand, Iran. Infertility Center, Department of Obstetrics and Gynecology, Mazandaran University of Medical Sciences, Sari, Iran. Email: mohamadrezadoostabadi@gmail.com Background: Following ovulation, oocytes become arrested in the metaphase of meiosis II. Without fertilization, they experience a gradual decline in quality over time, known as post-ovulatory aging (POA). Although POA affects the outcomes of assisted reproductive technology, its underlying mechanisms are largely unknown. Objective: Given the critical importance of POA's effects on oocyte quality, fertilization capacity, and subsequent embryonic development, the current experimental study evaluated the impact of 24 hr in vitro and in vivo oocyte aging on fertilization rate and embryo development. Materials and Methods: In this experimental study, 24 female BALB/c mice (20-25 gr, 8 wk) were randomly divided into 3 groups (n = 8/each) of a control group, an in vivo aging group, and an in vitro aging group. Superovulation was induced by an intraperitoneal injection of 5 IU of human menopausal gonadotropin, followed 48 hr later by an intraperitoneal injection of 10 IU of human chorionic gonadotropin. In the control and in vitro aging groups, after 16 hr, the mice were sacrificed to obtain oocytes. In the in vitro aging group, the collected oocytes were transferred into 100-µl drops of human tubal fluid without HEPES medium and cultured under mineral oil at 37°C for 24 hr in a humidified atmosphere containing 5% CO2. For the in vivo aging group, after 24 hr, the mice were sacrificed to obtain oocytes that had undergone in vivo aging process. In vitro fertilization was done after oocyte collection in control group and in vivo aging groups, and after 24 hr oocyte incubation in in vitro aging group. Fertilization, cleavage, and blastocyst formation rates were evaluated in different groups. Results: There was no statistically significant difference in the fertilization rate in in vivo aging (p > 0.999) and in vitro aging (p = 0.226) groups compared to the control group. The formation rate of 2 (p = 0.046), 4 (p = 0.034), and 8-cell (p = 0.003) embryos was significantly reduced only in the in vitro aging group. In vivo group showed a significant decrease in compact (p = 0.001) and blastocyst (p = 0.002) embryo formation rates compared to the control group. The decrease in in vitro group was also observed in both compact (p < 0.001) and blastocyst (p = 0.001) embryo formation rates. Conclusion: While early cleavage stages are primarily affected by in vitro oocyte aging, late cleavage stages can be negatively impacted in both intervention groups. The negative effect of in vitro oocyte aging compact and blastocyst embryo formation rates was higher than that of in vivo oocyte aging. Keywords: Oocyte, Aging, In vitro, In vivo. P-55 Chemical pregnancy in fresh and cryopreserved cycles, using day 3 (cleavage stage), and day 4 embryos (morula stage) Borzouie Z1, 2, Hosseini A1, 2, Salehi P2, 3, Ghasemi Tehrani H3, 4, Naghshineh E3, 4, Taherian AA5, Vatanparast M6. Department of Anatomical Sciences, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran. Clinical Center for Infertility, Shahid Behashti Hospital, Isfahan, Iran. Department of Urology of the Infertility, Milad Hospital, Isfahan, Iran. Department of Obstetrics and Gynecology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran. Anatomical Sciences Research Center, Kashan University of Medical Sciences, Kashan, Iran. Molecular Medicine Research Center, Research Institute of Basic Medical Sciences, Rafsanjan University of Medical Sciences, Rafsanjan, Iran. Email: mahboob_vatan@yahoo.com Background: With the advancement in the embryo culture media which supports nutrient requirements of embryos up to 5-6 days, there’s a chance to select more viable embryos, which are more likely to result in pregnancy, compared to earlier stages. Also, there is a controversy regarding the freeze embryo transfer, compared to the fresh type. Objective: To compare the chemical pregnancy rates between fresh embryo transfer, and frozen embryo transfer, on day-3 (cleavage), and day-4 (murola) of development. Materials and Methods: In this retrospective study, data of 242 fresh, and 758 frozen embryo transfer cycles was obtained, in one infertility center in Isfahan, Iran. The study`s groups were assigned based on the day of fresh or freezing embryo transfer (day-3, or day-4 embryos) and the embryo grading. Chemical pregnancy was the main outcome measurement (Implantation rates). Results: The chemical pregnancy rate was higher in the good quality freeze embryo day-3 and transfer on day-4 group (40.1%). This rate was near the results of transferring the good quality freeze embryo on day-4 (39.2 %). There was no significant difference in the chemical pregnancy rate, related to the number of transferred embryos (p = 0.55). Conclusion: The higher PRs when the embryos were transferred on day-4, provided further support for the morula stage embryo transfer, possibly because of better synchrony with the endometrium. It is concluded that morula/compact embryos are good candidates for embryo transfer, which simultaneously reduces the number of transferred embryos.  Keywords: Embryo development, Endometrial receptivity, Embryo transfer, Synchrony, Freeze embryo, Fresh embryo. The original full text of this abstract has been published: Borzouie Z, Hosseini A, Salehi P, Ghasemi Tehrani H, Naghshineh E, Taherian AA, Vatanparast M. Chemical pregnancy in fresh and cryopreserved cycles, using day 3 (cleavage stage), and day 4 embryos (morula stage). Zygote 2025; 1-8. Doi: 10.1017/S0967199425000048. P-56 S100 protein family and embryo implantation Latifi Z1, Fattahi A2, Nouri M2. Nervous System Stem Cells Research Center, Semnan University of Medical Sciences, Semnan, Iran. Department of Reproductive Biology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran. Email: Nourimd@yahoo.com It is well known that embryo implantation is a critical process in which embryo should be able to reach and attach to endometrium. Until now, various types of factors are involved in the regulation of this process. S100 proteins are calcium‐binding proteins, which have vital roles in embryo implantation and have been considered as possible candidate markers for endometrial receptivity. However, studies regarding mode of actions of these proteins are scarce and more mechanistic insights are needed to clarify exact roles of each one of the S100 protein family. Understanding of function of these proteins in different compartments, stages, and phases of endometrium, could pave the way for conducting studies regarding the therapeutic significance of these proteins in some disorders such as recurrent implantation failure. In this review, we outlined roles and possible underlying mechanisms of S100 protein family in embryo implantation. S100 family proteins exert various types of functions during critical process of fertility specially embryo implantation. Almost all member of this family regulates endometrial receptivity via calcium‐dependent mechanisms. However, more studies are needed to unravel exact roles of these proteins. Fortunately, omic studies introduced some member of this family as a potential endometrial receptivity biomarker, and it could be a hope for targeted therapy of disorders such as RIF and endometriosis base on the regulation of these proteins. For achieve this goal, it is essential to find novel mode of actions of S100 family proteins to design new and effective molecular targeted therapy for fertility problems. S100 family proteins exert various types of functions during critical process of fertility specially embryo implantation. Keywords: Embryo implantation, Recurrent implantation failure, S100 proteins. P-57 Umbilical cord blood as valuable resource for applicable stem cells: Aggregated procedures and biomolecular contents in a systematic review Pahlavan Y1, Jeddi A2, Sepandar Z3, Davood Barzegar M3. Biosensor Sciences and Technologies Research Center, Ardabil University of Medical Sciences, Ardabil, Iran. Department of Midwifery, Ataturk University, Erzurum, Turkey. Department of Biology, Parand Branch, Islamic Azad University, Tehran, Iran. Email: pahlavan20@yahoo.com Background: Umbilical cord blood have a reproductive and high proliferation capacity compared with bone marrow and peripheral blood cells. Main components of umbilical cord blood are including the hematopoietic, mesenchymal, pseudo-embryonic, unlimited somatic stem cells and, endothelial cells, lymphocytes, natural killer cells, dendritic cells and erythrocytes. Objective: The aim of this study was identifying the key biomolecules and application of umbilical cord blood as valuable source for applicable stem cells. Materials and Methods: In this systematic review study 20 of 200 papers from the PubMed, Google scholar, Cochran and Scopus entered to the study by systematic review. Results: Umbilical cord blood was aggregated by tow procedures: intrauterine method in which the stem cells of umbilical cord blood received from placenta or cord blood vessels after childbirth and before than placental abruption and the second method is extra uterine that umbilical cord blood stem cells aggregated after placental abruption. Special bag with barcode chooses after clamping and cutting the umbilical cord. The needle attached to the bag is inserted into the umbilical vein under sterile conditions. The bag is placed at a lower level so that the blood inside the umbilical cord vein is quickly and completely transferred into the sterile collection bag contained with anticoagulant. Conclusion: The presence of different cell populations in umbilical cord blood alongside hematopoietic stem cells makes it possible to use this resource in immunotherapy, tissue engineering and regenerative medicine. Therefore, isolation and expansion of different cell subtypes from umbilical cord blood and their use in the treatment of various diseases, especially in close relatives, have been considered. Keywords: Umbilical cord blood, Stem cell, Transplantation. P-58 Fertility preservation in the digital age: Opportunities and challenges of online resources for individuals with cancer Kokabi Hamidpour Sh1, Arjmand B2. Iranian Cancer Control Center (MACSA), Tehran, Iran. Cell Therapy and Regenerative Medicine Research Center, Endocrinology and Metabolism Molecular-Cellular Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran. Email: barjmand@sina.tums.ac.ir Cancer ranks as the leading cause of mortality worldwide. Even though the survival rate has increased over the past years due to advancements in treatment approaches, the occurrence of health issues, particularly infertility, has been raised, which can stem from the cancer itself and/or the treatment process. However, fertility preservation services are either under-prescribed or under-utilized. Studies suggest that low levels of awareness and knowledge are a critical barrier to fertility preservation decision-making in cancer survivors. Hence, researchers have turned to internet-based approaches as a solution, which are now recognized as an accessible approach to obtaining information among most populations. This study aimed to review the quality and accessibility of online resources for fertility preservation among cancer survivors, identifying gaps in information, readability, and inclusivity to enhance people’s knowledge and support informed decision-making regarding oncofertility care. To this end, literature review was conducted using digital databases such as PubMed, Science Direct, and Scopus. Studies revealed that a significant portion of websites related to the provision of fertility preservation information is from general or pediatric hospitals and cancer-related non-profits. Results indicated that many sites scored poorly in quality. According to the reports of studies, 83.8% of the websites provided limited information on uncertainties related to treatments, and 97% lacked adequate references. Furthermore, the majority failed to demonstrate a balanced perspective. The average reading level was 12th grade, indicating higher complexity in language. In terms of features, studies revealed that while most included basic facts on fertility preservation, interactive elements like survivor stories were rarely present. Regarding gender representation, more than half of the sites catered to both male and female audiences, covering various fertility preservation methods. However, socioemotional discussions surrounding costs and emotional impacts were notably sparse, particularly for transgender considerations. Online resources for people with cancer have potential but currently lack quality, thoroughness, readability, appeal, and inclusivity in fertility preservation websites. Clinicians and researchers have a valuable opportunity to collaborate with adolescents and young adults to develop effective educational websites that improve the knowledge of people with cancer and encourage shared decision-making about oncofertility care.  Keywords: Digital health, Fertility preservation, Patient education, Shared decision-making. P-59 Comparison of moderate and high doses of fennel seed on serum antioxidant level and follicologenesis in F1 female mice offspring Pourjafari F, Haghpanah T, Ezzatabadipour M. Department of Anatomical Sciences, School of Medicine, Kerman University of Medical Sciences, Kerman, Iran. Email: pourjafari.f@gmail.com; f.pourjafari@kmu.ac.ir Background: In Iranian lore, Foeniculum vulgare (fennel) is traditionally used to treat of various disease because of its antioxidant and phytoestrogen compounds. Objective: This study was carried out to evaluate the total antioxidant capacity (TAC) and folliculogenesis in offspring exposed to moderate and high doses of fennel seed in the prenatal period, breastfeeding until 56 postnatal days (PND 56). Materials and Methods: 24 adults female NMARI mice (25-30 gr 6-8 wk) were randomly divided into 3 groups (n = 8): control (CTL), and seed-treated groups that received 500 and 1000 mg/kg/day fennel seed (FS-500, and FS-1000). The treatments started from pregnancy day 1 and continued until PND 56. Their body and ovary weight and diameter were measured. The ovary was removed, fixed and 5µ sections were stained using the H&E method to assess folliculogenesis. The serum level of TAC was measured using ELISA kit. Results: The results showed that body and ovary weights significantly increased in the FS-treated groups in comparison with the CTL group (FS-500; p < 0.05, FS-1000; p < 0.01). A significant increase of the mean number of primordial, primary, pre-antral, pre-ovulatory follicles was observed in both doses of the FS -treated animals in comparison with the CTL group (p < 0.05). Also, corpus luteum count was raised in both FS-treated mice, although it reached to a significant difference in the FS-1000 groups when compared to the CTL group (p < 0.01). Moreover, there was a significant higher level of TAC in the FS-500 group compared to the CTL group (p < 0.001). Conclusion: The results of the present study showed that exposure to fennel seed could improve the folliculogenesis in the ovary of first-generation mice. This may be a result of the elevated antioxidant capacity level. Keywords: Foeniculum vulgar, Folliculogenesis, Ovary, First generation, Mice. P-60 Ferulic acid enhances the post-thaw quality of cryopreserved human sperm while mitigating oxidative stress Alaee S1, 2, 3, Akbarzadeh M4, 5, Ebrahimi F5, Samare-Najaf M6, Dutta S7, Sengupta P8. Department of Reproductive Biology, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran. Stem Cells Technology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran. Department of Natural Sciences, West Kazakhstan Marat Ospanov Medical University, Aktobe, Kazakhstan. Pathology Department, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran. Maternal-Fetal Research Center, Shiraz University of Medical Sciences, Shiraz, Iran. Blood Transfusion Research Center, High Institute for Research and Education in Transfusion Medicine, Tehran, Iran. Department of Basic Medical Sciences, College of Medicine, Ajman University, Ajman, UAE. Department of Biomedical Sciences, College of Medicine, Gulf Medical University, Ajman, UAE. Email: Sanaz620@gmail.com Background: Human sperm cryopreservation is widely recognized as a standard clinical method for long-term preservation. However, the process often leads to cryoinjury, primarily driven by oxidative stress, which negatively affects semen quality. Research suggests that incorporating antioxidants can help safeguard sperm during freezing and thawing. Objective: This study evaluated the impact of 2 ferulic acid concentrations (25 and 50 μg/ml) on oxidative status and the quality of cryopreserved sperm. Materials and Methods: This experimental research involved 30 normospermic donors who provided semen samples via masturbation and referred to Hazrat Zeinab Educational Medical Center, Shiraz, Iran. We used normospermic samples since our goal was the evaluation of ferulic acid as an antioxidant on sperm parameters after cryopreservation. Each sample was divided into 4 groups: fresh sperm without cryopreservation, cryopreserved sperm without supplements, and cryopreserved sperm supplemented with either 25 μg/ml or 50 μg/ml of ferulic acid. Various parameters, including semen quality, sperm DNA integrity, chromatin dispersion, and oxidative stress markers, were assessed. Results: Results indicated that the beneficial effects of 50 μg/ml ferulic acid on sperm parameters were more significant compared with 25 μg/ml. 50 μg/ml of ferulic acid significantly enhanced sperm morphology, motility, and viability. Additionally, this dosage effectively restored DNA and membrane integrity compromised by the freeze-thaw cycle (p ≤ 0.001). Ferulic acid also demonstrated strong antioxidant activity by reducing total oxidant status, increasing total antioxidant capacity, and lowering malondialdehyde level as a marker of lipid peroxidation (p ≤ 0.001). Conclusion: These findings suggest that supplementing cryopreservation media with 50 μg/ml ferulic acid is a promising approach to mitigate oxidative stress-induced cryoinjury, though further research is recommended.  Keywords: Ferulic acid, Spermatozoa, Cryopreservation, Oxidative stress. P-61 How do swim-up and density gradient centrifugation methods affect sperm biological parameters, DNA fragmentation, and separation of spermatozoa containing X and Y chromosomes? Nosrati A1, Heidari B2, Akbari Gh1, Nazemizadeh A2. Department of Veterinary Clinical Sciences, Science and Research Branch, Islamic Azad University, Tehran, Iran. Department of Regenerative Medicine and Biotechnology in Wound Healing, Medical Laser Research Center, Yara Institute, ACECR, Tehran, Iran. Email: ban_heidari@yahoo.com Background: According to the National Infertility Prevalence Survey, the infertility rate in Iran ranges from 18.3-22.5% (20.3%) with a 95% confidence interval. Objective: We aimed to evaluate the effect of conventional sperm processing methods (swim-up, density gradient centrifugation [DGC], and sperm wash) on biological parameters (total count, motility, progressive and non-progressive motility, and morphology), DNA fragmentation, and the expression of sex-determining Region Y (SRY) and Transducin β-Like protein 1, X-linked (TBL1X) genes in processed spermatozoa. Materials and Methods: Seven semen samples from Holstein cattle at Jahid Livestock Inputs Co. were transferred to the laboratory (20 min/ 25°C/ in the dark). 7 semen samples from Holstein cattle at Jahid Livestock Inputs Co. were transferred to the laboratory (20 min/ 25°C/ in the dark). The control group was washed with Ham’s F10 (1:1) and centrifuged at 700x g for 7 min. DGC involved mixing semen with 80% and 40% SpermGrad and centrifuging at 500x g for 5 min. Sperm biological parameters (total count, motility, progressive and non-progressive motility, and morphology) were evaluated using a computer-assisted semen analyser. SRY (spermatozoa containing X chromosome) and TBL1X genes (spermatozoa containing Y chromosome) expressions were detected using reverse transcription-polymerase chain reaction. DNA fragmentation and chromatin integrity in each group were detected using papanicolaou and aniline blue staining. Results: The total sperm counts were significantly higher in the control (26.3 ± 3.4×106) and DGC groups (24.2 ± 2.8×106) than in the swim-up method (11.99 ± 1.2×106). The highest and lowest total motility were detected in the swim-up and control groups (74.51 ± 5.6% and 50.76 ± 4.9%, respectively) (p = 0.023). The swim-up method also showed better progressive motility (57.96 ± 5.8%) than the control (38.34 ± 2.7%) (p = 0.042). Non-progressive and immotile sperm were lower in the swim-up method (10.59 ± 3.5% and 22.27 ± 2.7%) versus the control (16.54% and 48.91%). DGC and swim-up processing improved sperm chromosomal structure and integrity (p = 0.028). Sperm chromatin integrity in the control group was 28 ± 1.22%, significantly lower than in the other groups (p = 0.028). The control and swim-up methods showed the highest and lowest levels of DNA fragmentation and chromatin integrity (p = 0.034). Sperm processing methods significantly influenced the separation of X and Y chromosome-bearing sperm, with DGC having the most X chromosomes and swim-up the most Y (p = 0.029). SRY gene expression was highest in the swim-up (76.58%) and lowest in the control (53.52%) (p = 0.035). Conclusion: Sperm processing methods affect the biological parameters, chromatin integrity, DNA fragmentation, and the percentage of sperm containing X and Y chromosomes. Keywords: SRY, TBL1X, Sperm, Swim-up, DGC, Fragmentation. P-62 The effect of silymarin (silybum marianum) extracts on the parameters, DNA integrity, and free radical levels of normal male sperm after freezing by the rapid freezing method Azizzadeh B1, 2, Nabi A1, Anbari F1, Miresmaeili SM1, Hemati M1. Andrology Research Center, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Department of Biology, Faculty of Science and Engineering, Science and Art University, Yazd, Iran. Email: ali.nabi67@yahoo.com Background: Cryopreservation of human sperm by rapid freezing significantly reduces sperm motility, morphology, and DNA integrity. Silymarin seed extract contains a high concentration of an active compound which has shown an antioxidant effect by eliminating reactive oxygen species and inhibiting lipid peroxidation. Objective: This project aimed to check whether silymarin extract as a strong antioxidant has a protective role for sperm against the freezing process for sperm. Materials and Methods: In this experimental study, we used 20 normospermia samples who referred to Yazd Reproductive Science Institute, Yazd, Iran from January to Jun 2024. The samples are divided into 4 groups. The control groups 1 and 2 (before and after freezing) and the experimental groups sperm freezing media supplemented by doses of 500 and 100 mg/ml for silymarin extract. Sperm parameters were assessed in terms of motility, viability, morphology, protamine deficiency, and DNA fragmentation. A malondialdehyde kit was used to evaluate the reactive oxygen species level. Results: The use of silymarin extract in a dose of 100 mg/ml significantly increased the percentage of progressive sperm, as well as viability (p = 0.003), and also decreased DNA fragmentation (p = 0.021) compared to the freezing group without silymarin extract. The use of silymarin in 2 doses of 100 and 500 mg/ml did not significantly change the percentage of sperm with normal morphology. The addition of silymarin at a dose of 100 and 500 has significantly decreased the amount of sperm malondialdehyde compared to the freezing group (p = 0.002 and p = 0.01, respectively). Finally, the addition of 100 and 500 silymarin doses significantly reduced sperm protamine deficiency (p < 0.001). Conclusion: Sperm freezing can reduce the fertility potential. Therefore, to overcome this problem and improve the results of assisted reproductive methods, it is suggested to enrich sperm freezing with the use of biological and protective substances such as silymarin extract. Data showed the use of silymarin extract especially in a dose of 100 mg/ml dramatically improved sperm parameters and DNA conditions after the freezing procedure. Using these materials in the sperm freezing process, which is still in the research phase, can promise less damage to frozen and thawed sperm.  Keywords: Silymarin, DNA integrity, Freezing, Spermatozoa. P-63 The effect of green tea extract on the parameters, DNA integrity, and the amount of free radicals of normal sperm after freezing by rapid freezing method Naghibi A1, 2, Nabi A1, Anbari F1, Miresmaeili SM2, Hemati M1. Andrology Research Center, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Department of Biology, Faculty of Science and Engineering, Science and Art University, Yazd, Iran. Email: ali.nabi67@yahoo.com Background: During the freezing-thawing process of sperm, physical and chemical stresses are created in the sperm membrane and cause a decrease in the quality, viability, mobility, and fertility potential of sperm. These damages are caused by excessive production of free radicals, especially reactive oxygen species. Tea extract is a plant that has strong antioxidant properties and we can use its extract as a freeze protectant. Objective: This study aimed to check the effects of green tea extract on sperm parameters, reactive oxygen species level, and DNA status.  Materials and Methods: In this experimental study, we used 20 normozoospermia samples who referred to Yazd Reproductive Science Institute, Yazd, Iran between Jan-May 2024. The samples are divided into 4 groups: the control, freezing, and experimental groups, including freezing media supplemented by doses of 4.0 μg/ml and 0.4 μg/ml of green tea extract (prepared according to the previous studies). Sperm freezing was done by the rapid freezing method. Sperm parameters were evaluated regarding motility, viability, morphology, protamine deficiency and DNA fragmentation. A malondialdehyde kit was used to evaluate the ROS level. Results: The results showed that sperm parameters decreased and also DNA fragmentation and protamine deficiency increased significantly after the freezing process compared to the control group (p < 0.001). The use of doses of 0.4 μg/ml of green tea extract significantly increased the percentage of progressive sperm (p = 0.021), as well as viability (p = 0.016), and also decreased DNA fragmentation (p = 0.021), and protamine deficiency (p = 0.024) compared to the freezing group without green tea extract. The use of green tea extract in doses of 4.0 mg/ml did not significantly change the percentage of none of sperm parameters. Conclusion: The use of anti-freezing protectants can reduce the damage caused by the freezing procedure. Our data showed that the doses of 0.4 μg/ml green tea significantly improved the sperm parameters and DNA condition. Keywords: Green tea, DNA integrity, Freezing, Sperm motility. P-64 Extracellular vesicles as a potential tool in improving in vitro maturation rate Solati A. Department of Reproductive Biology, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran. Email: arezoo.sulati@yahoo.com Extensive communication between follicular somatic cells and the oocytes is essential for ovarian follicle growth and maturation. Recently, it has been reported that extracellular vesicles (EVs), including exosomes, have been identified in ovarian follicular fluid, which contains miRNA and proteins, and is involved in intercellular communication. EVs affect numerous cellular functions by regulating various signaling pathways and they have a similar therapeutic effect to their cells of origin. Hence, there is a probability that follicular fluid contains a remarkable source of bioactive factors such as EVs that can be used as supplements to improve oocyte growth during in vitro maturation (IVM). In this review, PubMed, Scopus, and Google Scholar databases were searched for the studies published from 2015-2024 with Keywords "Extrecellular vesicle", "Exosomes", and "IVM". The search and data extraction were conducted by 2 authors. Based on these studies, the effect of supplements such as EVs on improving IVM has been investigated. Evidence suggests that exosomes obtained from mesenchymal stem cells may help restore ovarian function in mice with ovarian failure. Moreover, laboratory studies have shown that these exosomes inhibit cell death in Chinese hamster ovary cells. Based on this evidence, EVs have been identified as a novel source of biomarkers and potential reproductive medicine therapeutics, especially for assisted reproductive technology. There are still many technical and scientific hurdles that need to be overcome before EVs can be used in clinical assisted reproductive technology diagnostic and therapeutic applications. Also, clinically stable and robust EV isolation procedures have yet to be developed. Findings suggest that adding EVs to the IVM culture medium creates an optimal environment that can improve oocyte maturation rates. Hence, the addition of EVs into the IVM medium may ameliorate the cytoplasmic maturation of human immature oocytes and subsequent clinical outcomes.  Keywords: Exosomes, Extracellular vesicles, IVM. P-65 An online intervention relationship enhancement couple therapy program versus systematic desensitization on sexual performance anxiety in women undergoing infertility treatment with timed intercourse: An RCT Afzal Dehkordi M1, Farajkhoda T2, Khanabadi M3, Shamsi F4. Student Research Committee of Nursing and Midwifery School, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Research Center for Nursing and Midwifery Care, Non-Communicable Diseases Research Institute, Department of Midwifery, School of Nursing and Midwifery, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Department of Counseling, School of Education Sciences and Psychology, Allameh Tabataba’I University, Tehran, Iran. Center for Healthcare Data Modeling, Department of Biostatistics and Epidemiology, School of Public Health Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Email: farajkhoda_t@yahoo.com Background: Sexual performance anxiety is common among infertility treatments. Psychological interventions are options for couples who do not tolerate psychiatric medications or like psychotherapy with pharmacotherapy. Objective: This study aimed to compare the effectiveness of relationship enhancement couple therapy program (RECT) program versus systematic desensitization (SD) on sexual anxiety. Materials and Methods: A randomized, parallel-group clinical trial was conducted on 68 (34 in each group) women with infertility and sexual anxiety who referred to the Hazrat Zahra Infertility Treatment Clinic in Shahrekord, Iran, in January 2022. Inclusion criteria included Iranian language, having a medical record of primary infertility in the mentioned center, having sexual intercourse anxiety based on the interview and sexual anxiety scale questionnaire, having a smartphone and internet literacy, having a sexual relationship with her husband, willingness to participate in the study and satisfaction of the husband for the woman’s participation in the study. Exclusion criteria included pregnancy, ovarian hyper stimulation syndrome, having neurological and psychiatric diseases based on their medical report and women’s self-report, taking psychiatric drugs based on infertility records, misfortune events such as the death of near relatives in the last 2 months, family quarrels in the last month, living in the location with no access to the internet, and participation in psychological counseling sessions or similar studies in the last 6 months. Women were randomly (simple randomization) assigned to one of the 2 groups of 34 people based on random allocation software. They were randomly (simple randomization) allocated to 8 weekly online interventions RECT or SD in the skyroom. The main outcome variables; sexual performance and anxiety, were assessed via Davis's questionnaire at baseline, completion of the intervention (week 8) and follow-up (week 12). The secondary outcome variable spouse's satisfaction was assessed (weeks 8 and 12, via visual analog scale). Data from 29 women were analyzed in each group (withdrawal of 10 women, n = 5/each). Results: Intra-group comparison RECT and SD showed a significant decrease of main outcome variable sexual anxiety baseline compared to week 12 (p = 0.001, 0.001 for RECT and SD, respectively). No significant difference was observed between the 2 groups in sexual anxiety in baseline compared to week 12 (RECT vs. SD, p = 0.149). Time-group interaction of spouse’s satisfaction showed a significant difference between RECT and SD (p = 0.010). Conclusion: Both RECT and SD were almost equally effective in decreasing sexual anxiety. RECT (couple relationship-centred) by empowering interpersonal ten skills and SD (personal-oriented), by learning step-by-step how fight-or-flight response is replaced by relaxation response, helping women perform more adaptive behaviors regarding sexual anxiety. RECT increased spouse satisfaction significantly compared to SD, indicated males need to participate in positive relationship changes. The results may be applied by therapists and health policy makers. Keywords: Psychological interventions sexual health, Infertility, Women, RCT. Registration ID in IRCT: IRCT20211127053188N1 P-66 Effect of online problem-solving counseling on the sexual anxiety and intimacy of women with recurrent pregnancy loss: An RCT Mohammadkhani Sh1, Ghasemi N2, Bokaie M3. Student Research Committee, School of Nursing and Midwifery, Isfahan University of Medical Sciences, Isfahan, Iran. Abortion Research Center, Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Research Center for Nursing and Midwifery Care, Non-Communicable Diseases Research Institute, Department of Midwifery, School of Nursing and Midwifery, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Email: sh.mohamadkhani76@gmail.com Background: Recurrent pregnancy loss (RPL) creates complex reproductive conditions among women. Problem-solving therapy is one of the sexual health approaches. Objective: This study was designed to investigate the effect of online problem-solving counseling on the sexual anxiety and intimacy of women with RPL.  Materials and Methods: A randomized clinical trial was conducted at the Abortion Research Center of Yazd Reproductive Sciences Institue, Yazd, Iran between March and August 2023. A total of 70 women with RPL were randomly assigned into 2 groups, of intervention and control, using random allocation software (n = 35/each). The intervention group received 8 sessions of sexual counseling on online problem solving (the content of the sessions includes 1) getting the therapist and group members to know each other and giving explanations about the terms habitus abortion and problem solving approach, 2) talking about the client's experiences about habitus abortion, teaching logical problem solving and defining the problem in terms of clear and objective to be practical to solve the problem, 3) setting realistic goals to solve the problem, identifying the symptoms under the control of the individual, using practical exercises by the members to find negative thoughts related to their problem and illness, 4) implementation of the strategy brainstorming, teaching emotion-oriented and problem-oriented coping methods, 5) learning functional ABCs, 6) teaching effective real-life problem solving by combining emotions and logical thinking, teaching how to evaluate and choose a solution and identify its positive and negative points, 7) choosing the best solution by members, 8) reviewing the next steps of progress, encouraging all progress). The control group received an online educational pamphlet. Sexual anxiety, and sexual intimacy were collected using questionnaires based on sexual anxiety and intimacy. The online questionnaires were completed before, after, and 1 month after the study.  Results: A total of 70 participants were included in the final analysis. The mean score of sexual anxiety in the 8th and 12th wk was significantly less in the online group than in control group (p < 0.001). The mean score of sexual intimacy in the 8th and 12th wk was significantly higher in the online group than in the control group (p < 0.001).  Conclusion: Problem-solving-based sexual health counseling programs may improve sexual anxiety and intimacy in women with RPL. It is recommended to use a sexual health counseling method in RPL centers when considering the effectiveness of this type of training. Keywords: Anxiety, Problem-solving, Sexuality, Counseling, Habitual miscarriage. Registration ID in IRCT: IRCT20220620055229N1 The original full text of this abstract has been published: Mohammadkhani Sh, Ghasemi N, Bokaie M. Effect of online problem-solving counseling on the sexual anxiety and intimacy of women with recurrent pregnancy loss: An RCT. Int J Reprod BioMed 2024; 22: 717-726. Doi: 10.18502/ijrm.v22i9.17476. P-67 Investigating the effect of various psychological interventions on anxiety, depression, and stress in women who experienced repeated miscarriage: A review study Nikoobin E1, Asadi L2, ZareMobini F2. School of Nursing and Midwifery, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Department of Midwifery, School of Nursing and Midwifery, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Email: Dr.leilaasadi@gmail.com Recurrent miscarriage is a serious challenge in women's reproductive health, defined as the loss of 2 or more consecutive pregnancies. This issue affects not only physical health but also the mental health of women, potentially leading to a wide range of psychological disorders. Women with a history of recurrent miscarriage often face psychological problems such as anxiety, depression, and stress, which can significantly negatively impact their quality of life and well-being. In recent years, psychological interventions have emerged as practical approaches to alleviate these disorders. The present study aims to determine the effectiveness of various psychological interventions on anxiety, depression, and stress in women with recurrent miscarriage experiences by reviewing existing studies and scientific evidence. This study was conducted as a narrative review. A search was conducted for studies published between 2010 and 2024 across PubMed, Science Direct, Google Scholar, Magiran, SID, and UpToDate. The search utilized keywords such as "Interventions" "Psychological Interventions" "Cognitive Behavioral Therapy (CBT)", "Mindfulness-Based Stress Reduction (MBSR)"" "Recurrent Miscarriage" "Anxiety" "Depression" and "Stress", along with their Persian equivalents. Included articles were published in English or Persian and evaluated the effectiveness of psychological interventions in reducing anxiety, depression, and stress in women with recurrent miscarriages. Various quantitative and qualitative studies relevant to the objective were selected and reviewed using a researcher-developed checklist. In total, 132 studies were reviewed, leading to the selection of 34 studies, which include randomized controlled trials and cohort studies focused on psychological interventions such as CBT, MBSR, supportive counseling, emotion-focused therapy, and hope therapy. The findings indicate that MBSR and CBT are recognized as the most effective methods for reducing anxiety and depression. These interventions are typically delivered in 8-12 sessions, and significant reductions in the average scores of various psychological indicators, including stress, anxiety, and depression, have been observed in women with recurrent miscarriages after completing the sessions. Supportive counseling has also led to a decrease in levels of depression and stress in limited studies; however, it did not significantly impact anxiety levels. Emotion-focused therapy and hope therapy have generally positively influenced the improvement of psychological status and the enhancement of resilience in women with recurrent miscarriages. Psychological interventions play a crucial role in enhancing the mental health of women with recurrent miscarriages. Counseling approaches such as MBSR and CBT have been identified as the most effective methods for reducing anxiety and depression. These findings emphasize the importance of incorporating psychological interventions into the routine care of women with recurrent miscarriages. Therefore, attending to psychological aspects alongside clinical care can help improve the overall condition of women experiencing recurrent miscarriages. However, it is important to recognize that the effectiveness of psychological interventions can be affected by factors such as individual characteristics, social support, and the quality of implementation. Thus, future research should focus on a more detailed examination of these factors. Keywords: Psychological interventions, Recurrent miscarriage, Anxiety, Depression, Stress. P-68 Psychological aspects of infertility: A systematic review Momenimovahed Z1, Salehiniya H2. Reproductive Health Department, Qom University of Medical Sciences, Qom, Iran. Department of Epidemiology and Biostatistics, School of Health, Social Determinants of Health Research Center, Birjand University of Medical Sciences, Birjand, Iran. Email: momeni.z@gmail.com Background: Infertility can impose a substantial psychological burden on individuals and couples. The journey often involves a complex mix of emotions, including feelings of sadness, frustration, and isolation. Objective: This systematic review aimed to explore the diverse psychological dimensions related to infertility. Materials and Methods: A comprehensive search was conducted in Medline, Web of Science Core Collection (indexes = SCI-EXPANDED, SSCI, A&HCI Timespan), and Scopus databases with the keywords; "infertility OR fertility", "emotional distress OR mental distress OR psychological distress OR depression OR stress OR mental disorders OR anxiety" and a combination of these words to find quality articles published from 2000-2024. Observational studies in English related to the purpose of the study were included in the analysis, and review studies, case reports, letters to editors, comments, and reports were excluded. Results: In the initial search, 1075 articles were obtained. After screening and eligibility assessment, 38 studies were reviewed. The literature highlights several psychological aspects associated with infertility, including emotional distress, identity and self-esteem challenges, relationship strain, and social isolation. Emotional distress encompasses a range of feelings, such as grief and loss due to unmet reproductive goals, as well as heightened anxiety and depression stemming from the constant stress of fertility struggles. The journey through infertility can disrupt an individual’s sense of identity, especially when societal norms link personal worth to fertility and parenthood. Additionally, relationship strain frequently develops as partners may deal with the emotional turmoil differently, leading to misunderstandings and conflicts. Lastly, many individuals feel unable to share their struggles with friends and family, leading to a sense of social isolation. Conclusion: The psychological aspects of infertility are complex and multifaceted. It’s essential for those experiencing infertility to seek support, whether through professional counseling or community resources, to navigate the emotional challenges they face. Keywords: Psychological distress, Infertility, Systematic review. P-69 The role of sexual health literacy in predicting women's sexual function and marital intimacy in working women of Yazd city Fakhry Z1, Nasirian M2. Department of Psychology, Faculty of Humanities, Islamic Azad University of Yazd, Yazd, Iran. Department of Psychiatry, Research Center of Addiction and Behavioral Sciences, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Email: nasirian90@gmail.com Background: Sexual health is an important part of individual well-being, yet in many societies, it is often ignored due to sociocultural factors and the stigma embarrassment in talking about sexual issues. Sexual health literacy consists of various domains such as sexual and gender development, puberty, pregnancy, contraception, unwanted pregnancy, sexually transmitted infections, communication about sexual preferences and coercion. Objective: This study aims to investigate the role of sexual health literacy in predicting women's sexual performance and marital intimacy in married working women in Yazd, Iran city in 2022-2023. Materials and Methods: In this cross-sectional study, 150 working married women who had no known psychiatric or physical disorders that reffered to comprehensive health centers between October 2022 and March 2023 were selected by available sampling in Yazd, Iran. Participants completed the Walker and Thompson marital intimacy uestionnaire, the sexual performance, and the adult sexual health literacy questionnaires. Results: There was a significant relationship between sexual Health literacy, sexual performance, and marital intimacy among married working women in Yazd. Conclusion: Sexual health literacy was positively correlated with sexual function and marital intimacy in women. It seems that increasing health literacy has led to increased knowledge about sexual physiology and sexual function, which can affect sexual satisfaction. Improvement of sexual health and appropriate interventions should be done in order to increase the level of health litheracy. The results can be used in psychiatry counseling centers and women's health care centers. Keywords: Sexual, Health literacy, Performance, Intimacy, Women. P-70 Treatment suspension due to the coronavirus pandemic and its impact on the mental health of infertile people: A systematic review and meta-analysis of observational studies Iranifard E1, 2, Yas A2, 3, Mansouri Ghezelhesari E2, Taghipour A4, Mahmoudinia M5, 6, Latifnejad Roudsari R2, 7. Department of Midwifery, Maybod Branch, Islamic Azad University, Maybod, Iran. Department of Midwifery, School of Nursing and Midwifery, Mashhad University of Medical Sciences, Mashhad, Iran. Reproductive Health Research Center, Clinical Research Institute, Urmia University of Medical Sciences, Urmia, Iran. Department of Obstetrics and Gynecology, School of Medicine, Milad Infertility Treatment Center of Mashhad, University of Medical Sciences, Mashhad, Iran. Social Determinants of Health Research Center, Mashhad University of Medical Sciences, Mashhad, Iran. Department of Epidemiology, School of Health, Mashhad University of Medical Sciences, Mashhad, Iran. Nursing and Midwifery Care Research Center, Mashhad University of Medical Sciences, Mashhad, Iran. Email: rlatifnejad@yahoo.com Background: Access to fertility treatments is a reproductive right; however, the COVID-19 pandemic led to the widespread suspension of fertility treatments, potentially impacting the mental health of infertile individuals. Objective: This study aimed to systematically analyze the prevalence of anxiety, depression, and stress among infertile individuals during fertility treatment suspension due to the COVID-19 pandemic. Materials and Methods: This study adhered to the meta-analysis of observational studies in epidemiology guidelines. A comprehensive search was conducted in the Web of Science, PubMed, Embase, Scopus, and Cochrane library databases until December 31, 2022. All observational studies investigating the mental health outcomes, specifically anxiety, depression, and stress, of infertile individuals facing treatment suspension were included. Qualitative studies, editorials, commentaries, conference papers, and articles without full-text availability were excluded. The quality of studies was assessed by 2 researchers, independently, using the Newcastle-Ottawa scale. The random-effects model was applied to estimate the pooled prevalence. Meta-regression and subgroup analyses were performed to explore sources of heterogeneity. Results: Of the 681 studies initially identified, 21 studies involving 5901 infertile participants met the inclusion criteria. Sixteen of these were included in the meta-analysis. The pooled prevalence of mental health issues in female participants was as follows: anxiety (48.4%, 95% CI [34.8-62.3]), depression (42%, 95% CI [26.7-59.4]), and stress (55%, 95% CI [45.4-65]). Furthermore, 64.4% (95% CI [50.7-76.1]) of participants expressed a desire to resume fertility treatments despite the ongoing pandemic. Conclusion: The suspension of fertility treatments due to the COVID-19 pandemic negatively affected the mental health of infertile couples. It is crucial to ensure continuity in fertility care, with particular attention to the mental health needs of individuals experiencing infertility, even during a global public health crisis. Keywords: Anxiety, Assisted reproductive technology, Covid-19, Depression, Infertility, Mental health, Stress, Meta-analysis. The original full text of this abstract has been already published: Iranifard E, Yas A, Mansouri Ghezelhesari E, Taghipour A, Mahmoudinia M, Latifnejad roudsari R, et al. Treatment suspension due to the coronavirus pandemic and mental health of infertile patients: A systematic review and meta-analysis of observational studies. BMC Public Health 2024; 24: 174. Doi: 10.1186/s12889-023-17628-x. P-71 Artificial intelligence in oocyte and embryo development: A new era in reproductive medicine Parvin Jahromi AH, Azari M. Department of Clinical Sciences, School of Veterinary Medicine, Shiraz University, Shiraz, Iran. Email: amirhossein20p@gmail.com Artificial intelligence (AI) has emerged as a transformative force in various fields, including reproductive medicine. Its application in oocyte and embryo development holds immense potential to revolutionize assisted reproductive technologies (ARTs) and improve pregnancy outcomes. AI-powered image analysis systems can objectively assess oocyte quality by analyzing morphological features, such as size, shape, and cytoplasmic texture. These systems can identify oocytes with the highest developmental potential, leading to improved selection for fertilization. Time-lapse imaging coupled with AI algorithms enables precise monitoring of embryo development. By analyzing key morphological parameters and developmental kinetics, AI can accurately predict embryo viability and implantation potential. This information empowers clinicians to select the most promising embryos for transfer, increasing the chances of successful pregnancy. AI can optimize various aspects of ART procedures, including: personalized treatment plans: by analyzing patient data, AI can tailor treatment protocols to individual needs, maximizing success rates. Automation of routine tasks: AI-driven robotic systems can automate tasks like sperm selection, oocyte retrieval, and embryo transfer, reducing human error and improving efficiency. Predictive modeling: AI models can predict pregnancy outcomes based on a multitude of factors, including patient characteristics, embryo quality, and treatment protocols. This information can guide clinical decision-making and patient counseling. The integration of AI in oocyte and embryo development offers several advantages, including: improved accuracy: AI-powered systems can provide more objective and accurate assessments compared to traditional methods. Enhanced success rates: by selecting the best embryos for transfer, AI can significantly increase pregnancy rates. Reduced costs: automation of routine tasks can lower the cost of ART procedures. Personalized medicine: AI enables tailored treatment plans, optimizing outcomes for individual patients. However, challenges remain, including the need for large datasets, ethical considerations, and regulatory frameworks. As AI continues to advance, it is crucial to address these challenges and ensure the responsible and ethical application of this technology in reproductive medicine. In conclusion, AI is poised to revolutionize oocyte and embryo development, offering significant advancements in reproductive medicine. By leveraging the power of AI, clinicians can improve patient outcomes, optimize treatment protocols, and ultimately fulfill the dreams of parenthood for many couples. Keywords: Artificial intelligence, Embryo, Reproductive outcome, Oocyte. P-72 The impact of artificial intelligence in reproductive medicine and infertility Rezaeikoopaei Z1, Farajkhoda T2. Student Research Committee, School of Nursing and Midwifery, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Research Center for Nursing and Midwifery Care, Non-Communicable Diseases Research Institute, Department of Midwifery, School of Nursing and Midwifery, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Email: farajkhoda_t@yahoo.com Background: Infertility is the most common and challenging global health problem in couples. The advancement of technology has increased the rate of diagnosis and treatment of infertility. Today, one of the most innovative technologies in the world is artificial intelligence (AI), and medical science is no exception to this rule. Therefore, it is one of the applications of AI in reproductive and infertility medicine. This article examines how AI can be effective in the diagnosis and treatment of infertility. Narrative research in medical databases (PubMed, Google Scholar, SID, Web of Sciecnce, MEDLINE and Cochrane) with the following keywords in Persian and English equivalents was performed: "Artificial intelligence", "Infertility", "Midwifery", "Reproductive Health". The search was conducted from 2010-2024 and among 30 relevant articles, after review 10 articles were selected. Research has shown that infertility can have several causes in men and women, each of which requires specialized investigations. The type of diagnostic and treatment methods play a significant role in solving the infertility problem of couples. Therefore, AI as a new idea can be used to understand, recognize, learn, and make decisions. It can act similarly to human intelligence and can even be faster, easier and more efficient. Among the applications of AI in infertility problems, we can mention the selection of the best egg and sperm cells to increase success, evaluation of embryo and egg quality before any intervention, prediction of the success rate of assisted reproductive technology, analysis of semen and interpretation of images. Since in today's societies the diagnosis and treatment of infertility are very important, especially in Iran, AI is expected to be developed in the field of education and counseling of infertile couples in addition to the field of diagnosis and treatment. So that it can be used in the field of fertility and health care. The introduction of AI in the community of midwives who are active in the field of reproductive health can create a new window in health care and help infertile couples benefit from other care in addition to therapeutic interventions. Keywords: Artificial intelligence, Infertility, Midwifery, Reproductive health. P-73 Artificial intelligence and the future of infertility: Ethical and social challenges in the path of treatment Zahmatkesh N1, Asadi L2, ZareMobini F2. Faculty of Nursing and Midwifery, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Department of Midwifery, Faculty of Nursing and Midwifery, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Email: dr.leilaasadi@gmail.com Background: With the increasing prevalence of infertility in the world, the need for more accurate methods to assess this issue is clear. In recent years, the healthcare industry has utilized machine learning algorithms to improve the quality of care and efficiency. Artificial intelligence (AI) can play an effective role in diagnosing infertility and predicting the outcomes of assisted reproductive treatments. Objective: This study aims to investigate the role of AI in infertility treatment, analyze its ethical and social challenges, and provide solutions to infertility treatment specialists for the intelligent and ethical use of new technologies. Materials and Methods: In this review study, following the PRISMA guideline, a comprehensive literature search was conducted to identify relevant studies published between 2020 and 2024. The following databases were searched: PubMed, Science Direct, Google Scholar, and UpToDate. Search terms included the English keywords "Infertility", "Artificial Intelligence", "Social Challenge", "Ethical Challenge", and their Persian equivalents. Initially, 118 articles were retrieved. After removing duplicates, the remaining articles were screened based on their titles and abstracts to exclude irrelevant studies, resulting in 36 articles that met the initial inclusion criteria. Full-text versions of these potentially eligible studies were then obtained and assessed for eligibility based on predefined inclusion and exclusion criteria. A researcher-made checklist was used to select and review numerous quantitative and qualitative studies aligned with the aims of this study. Results: Finally, 12 articles achieved the required quality score for inclusion in the final analysis. AI’s application in infertility treatments has shown promising results across multiple areas. Studies have revealed that AI enhances the assessment of both male and female fertility, leading to more accurate evaluations of egg quality, endometrial receptivity, and sperm analysis. This includes the selection of superior embryos and optimizing the efficiency of egg stimulation. Furthermore, AI aids in making informed treatment decisions, contributing to higher fertility rates. It also streamlines treatment management, potentially lowering associated costs, and broadening access to care. Overall, AI’s implementation appears to be a cost-effective solution. However, the integration of AI in medicine also poses significant ethical and legal challenges. Key among these are the availability of high-quality and extensive data sets necessary for training AI models. Standardizing medical images to ensure accurate analysis by AI systems is another crucial consideration. Protecting patient privacy during data usage is paramount, alongside continuous monitoring of AI model performance to guarantee safety and accuracy. Bias in training data, potentially leading to unfair outcomes, must also be addressed. Finally, it’s essential to maintain the role of human decision-making, emphasizing that AI should support rather than replace the physician’s expertise. Conclusion: AI has great potential to revolutionize infertility treatment. Therefore, to achieve this potential, ethical and legal challenges must also be addressed. Responsible and informed use of AI, along with the development of standards and careful monitoring, can exploit the benefits of this technology in improving the health and care of couples with fertility problems. Keywords: Infertility, Artificial intelligence, Challenge. P-74 The role of artificial intelligence in improving embryo selection for in vitro fertilization: A systematic review Pourrajab F1, Sadeghi-Nodoushan F2, 3. Reproductive Immunology Research Center, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Department of Biochemistry, School of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Student Research Committee, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Email: mina_poorrajab@yahoo.com Background: The success of in vitro fertilization (IVF) treatments largely depends on selecting viable embryos for implantation. Traditional selection methods are based on morphological assessments that can lack predictive accuracy. Artificial intelligence (AI) has recently emerged as a tool to enhance embryo selection by providing more objective and precise assessments. Objective: The aim of this study is to compare AI-based embryo selection methods with traditional morphological assessments in terms of their accuracy in predicting embryo viability, their impact on implantation success rates, the number of treatment cycles required, and the overall clinical outcome. Materials and Methods: A systematic review was conducted in accordance with PRISMA guidelines. Databases such as PubMed and Google Scholar were searched using the following keywords: "artificial intelligence", "embryo selection", "implantation", "machine learning", and "in vitro fertilization". Included studies were peer-reviewed original human research using AI, machine learning, or deep learning for embryo selection in IVF, reporting outcomes such as implantation or pregnancy rates. Excluded were non-AI studies, reviews, animal research, and articles without full-text or outcome data. Studies employing deep learning algorithms to analyze images of embryos at various developmental stages were prioritized. Additional data, including participants' demographics and genetic markers, were considered when available to assess their impact on predictive outcomes. Results: From a total of 412 retrieved articles, 76 duplicates were removed. After screening 336 articles by title and abstract, 52 were selected for full-text review. Finally, 18 studies met the inclusion criteria. Most of the included studies used deep learning or convolutional neural networks to evaluate embryo viability and predict implantation or live birth outcomes, demonstrating improved accuracy compared to conventional scoring methods. Conclusion: AI applications in IVF have substantial potential for optimizing embryo selection, offering a more precise, data-driven approach that could revolutionize reproductive medicine. By integrating AI into clinical IVF settings, success rates may be improved, ultimately providing a promising outlook for individuals seeking fertility treatments. However, further research is needed to standardize AI applications and assess their long-term efficacy in diverse clinical environments. Keywords: In vitro fertilization, Embryology, Artificial intelligence. P-75 Innovative artificial intelligence applications in the diagnosis of women’s infertility issues Dortaj H1, Pourentezari M2, Dortaj S3, Rajabi A4. Tissue Engineering Research Group (TERG), Department of Anatomy and Cell Biology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran. Department of Biology and Anatomical Sciences, Faculty of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Dubai Pharmacy College, Dubai, United Arab Emirates. Department of Tissue Engineering and Applied Cell Science, Shiraz University of Medical Sciences, Shiraz, Iran. Email: hengameh.dourtaj@gmail.com Infertility is a complex condition often resulting from a myriad of physiological and environmental factors. Recent advancements in artificial intelligence (AI) have emerged as transformative tools in the diagnosis and management of female infertility. This study examines the application of AI technologies in elucidating the etiologies of infertility, improving diagnostic precision, and tailoring treatment regimens. AI algorithms, with a particular emphasis on machine learning models, systematically analyze extensive datasets derived from clinical records, hormonal profiles, and imaging studies. These analyses facilitate the identification of patterns and correlations that may remain obscured through conventional diagnostic approaches. For instance, AI has shown promise in detecting conditions such as polycystic ovary syndrome and endometriosis by evaluating key biomarkers and patient histories, leading to earlier and more accurate diagnoses. Moreover, AI-driven predictive analytics can assess the like hood of successful conception through various assisted reproductive technologies, enabling clinicians to tailor interventions based on individual patient profile. This personalized approach not only improves treatment outcomes but also reduce the emotional and functional burdens associated with infertility treatment. Ethical consideration surrounding AI in reproductive health, including data privacy and algorithm bias will also be addressed, ensuring that the implementation of these technologies aligns with patient care principles. The application of AI in diagnosis the causes of infertility represent a significant advancement in reproductive medicine, offering hope for improved outcome and enhanced quality of life for women facing infertility challenges. Keywords: Artificial intelligence, Infertility diagnosis, Machine learning, Reproductive health. P-76 A deep learning-based method for detecting chromosomal abnormalities in microscopic images Zare M1, 2, Ghasemi N3, Movahed S1, Modabber F1. Azarbaijan Shahid Madani University, Tabriz, Iran. Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Mediccal Sciences, Yazd, Iran. Abortion Research Center, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Mediccal Sciences, Yazd, Iran. Email: mozr2010@gmail.com Background: Chromosomal abnormality is one of the major concerns in genetic disorders, which causes infertility and/or abortion. Traditional detection techniques, such as karyotype analysis, needs professional analysis and are time-consuming. Technological developments in image processing and deep learning present viable ways to automate this procedure. Objective: This study aimed to develop a deep learning-based model for identifying chromosomal abnormalities, focusing on both numerical and structural anomalies, using convolutional neural networks (CNNs) and advanced image processing techniques. The goal was to provide a rapid and accurate method for diagnosing chromosomal abnormalities in genetic laboratories. Materials and Methods: This work was a retrospective experimental analysis utilizing microscopic chromosomal imaging data. The dataset for this study consists of microscopic chromosome images, sourced from the Gel Cell Laboratory, including both normal and abnormal chromosome samples. Initially, a large dataset was used to train a deep learning model, and to address the class imbalance issue, data balancing techniques such as oversampling the minority class (abnormal images) and under-sampling the majority class (normal images) were applied. However, due to the complexity of the dataset, a CNN architecture was employed for the refined model. Additionally, a comparison was made with a pretrained ResNet-18 model to evaluate the performance differences. ResNet-18, being a well-known architecture for image classification tasks, was used as a baseline for assessing CNN's performance improvements. Following the balancing process, 2,832 images were selected for model training and optimization. Data augmentation techniques, such as rotation, brightness correction, and contrast adjustment, were applied to further enhance the dataset, ensuring better generalization of the model across diverse scenarios. The improvements were achieved through the data balancing and augmentation techniques. Results: The CNN-based model demonstrated strong performance in identifying chromosomal abnormalities, achieving 87% accuracy on the validation dataset and 85.03% accuracy on the test dataset. Precision and recall were 83% and 82%, respectively, indicating the model's ability to correctly identify abnormal chromosomes while minimizing false predictions. Data augmentation proved to be essential, particularly in handling low-quality images, and contributed significantly to the model's robustness across different image conditions. Conclusion: In conclusion, the study demonstrates that chromosomal abnormalities can be effectively detected from microscopic images using deep learning, specifically CNNs combined with data augmentation techniques. The proposed model offers a reliable and efficient tool for genetic laboratories, facilitating faster and more accurate diagnoses of chromosomal disorders. Future work will involve enlarging the dataset and exploring transfer learning to further enhance model performance. Keywords: Chromosomal abnormality, Deep learning, Convolutional neural networks, Genetic diseases, Karyotyping. P-77 High intensity interval training along with nanomicelle curcumin improves asisted reproductive technologies outcomes in polycystic ovary syndrome women Asa E1, Delshad A2, Jannatifar R2, Naserpour L2, 3, Talashan F3. Department of Reproductive Biology, Academic Center for Education, Culture, and Research (ACECR), Qom, Iran. Department of Sports Physiology and Immunology, Faculty of Literature and Human Sciences, University of Qom, Qom, Iran. Department of Tissue Engineering, Qom University of Medical Sciences, Qom, Iran. Email: asa.elham@gmail.com Background: Polycystic ovary syndrome (PCOS) is a common hormonal disorder among women (4%-20%) when the ovaries create abnormally high levels of androgens, the male sex hormones that are typically in women in trace amounts. Therefore, finding a potential candidate for treating PCOS is necessary. Curcumin is a major active natural polyphenolic compound derived from turmeric (Curcuma Longa). Objective: We aimed to investigate the effects of a high intensity interval training (HIIT) course along with nano micelle curcumin (NMC) supplementation on the serum levels of testosterone, luteinizing hormone( follicle stimulating hormone )FSH(, egg maturation rate, embryo quality in infertile women with PCOs under intracytoplasmic sperm injection. Materials and Methods: In this randomized clinical trial, 40 PCOs infertile women who referred to Jihad University Infertility Center, Qom, Iran for ICSI were randomly dividedin 4 groups (n = 10/each) of HIIT, HIIT with NMC, NMC, and control (without any intervention). The interferences began approximately 3 months before the start of the intracytoplasmic sperm injection cycle. Exercise training was 3 times a week and the supplement dose was 80 mg/day, 3 days a week to check the studied factors before and after 3 months of exercise intervention and NMC supplement, blood samples were taken and stored at 70°C. Also, on the day of puncture, the oocytes were checked for maturity and 72 hr after the microinjection, the quality of the embryos was checked and compared between groups. Results: Our data showed that the amount of luteinizing hormone in the intervention groups has decreased statistically significantly (HIIT: p = 0.011, HIIT + NMC: p = 0.005, NMC: p = 0.013). The FSH and testosterone levels increased significantly in the NMC and HIIT + NMC groups. FSH (NMC: p = 0.001 and HIIT + NMC: p = 0.002). Testosterone (NMC: p = 0.001 and HIIT + NMC: p = 0.026). The results showed that there was no statistically significant difference in the average number of oocytes obtained in the studied groups. Also, the results showed that the number of mature oocytes in the NMC and HIIT + NMC groups had a statistically significant increase compared to the 2 HIIT and control groups (p = 0.040), in contrast to the average number of immature oocytes in the NMC and HIIT + NMC compared to the control group, a significant decrease was observed (p = 0.030). The number of embryos obtained in the treatment groups has increased significantly compared to the control group, and the number of embryos in the NMC and HIIT + NMC groups is also higher than in the exercise group (p = 0.010). The fertility rate has also increased significantly in the treated groups compared to the control group (p = 0.003). The number of high-quality embryos in the NMC and HIIT + NMC groups showed a significant increase compared to the control group (p = 0.000). At the same time, an increase was also observed in the exercise group, but it was not statistically significant compared to the control group. Conclusion: NMC treatment and HIIT exercises can modulate hormones and assisted reproductive techniques outcomes in PCOs infertile women. Keywords: Polycystic ovary syndrome, High intensity interval training, Nanomicelle curcumin, Assisted reproductive techniques. Registration ID in IRCT: IRCT20210207050279N1 P-78 Genetically modified autologous stem-cell transplantation for endometrial dysfunctions Eslami MP1, Emamifar A1, Salehi S1, Arjmand B2. Iranian Cancer Control Center (MACSA), Tehran, Iran. Cell Therapy and Regenerative Medicine Research Center, Endocrinology and Metabolism Molecular-Cellular Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran. Email: barjmand@tums.ac.ir Stem cells have become one of the safe and novel approaches for infertility due to their proliferative ability and differentiation. Also, molecular signaling and exogenous stimulators can control stem-cell metabolism, proliferation, and differentiation. Genetically modified stem cells are stem cells that have been changed to have specific traits as part of a treatment plan that improves how they respond to signals and controls their gene activity. Endometrial dysfunctions can lead to infertility due to abnormal endometrial thickness, disoriented endometrial proliferation, endometriosis, and low endometrial receptivity. This study aims to investigate a new approach to female infertility. Gene modifications on autologous stem cells are discussed and compared to non-modified autologous stem cells and other conventional approaches for endometrial dysfunctions. The study provides a literature review on recent investigations in the field of cell therapy for endometrial dysfunctions. Recent and valid studies from PubMed, Embase, and Scopus databases have been chosen and criticized to solve the problem and report results. Therapeutic outcomes for endometrial dysfunction using genetically engineered mesenchymal stem cells are shown. Reduction in fibrous formation, angiogenesis and endometrial proliferation are the histologic manifestations of modified mesenchymal stem cell transplantation by means of differentiation, proliferation, and enhanced cellular and molecular signaling response, including janus activated kinase (JAK)/ signal transducer and activator of transcription (STAT), inositol triphosphate (IP3), G-proteins, and growth factors. Compared to non-modified stem cells, there are better results for therapeutic efficacy. For endometrial dysfunction, modification of autologous bone marrow stem cells with a cardiotrophin-1 gene can be transplanted and shows improvement in neovascularization, enhanced proliferation, migration, and tube formation in vitro, and increased embryo receptivity in vivo based on upregulation of the JAK/ phosphatidyl inositol 3-kinase (PI3K)/mammalian target of rapamycin (mTOR)/STAT3 pathway. Modified menstrual blood mesenchymal stem cells also promote endometrial angiogenesis and proliferation. Animal studies also reveal endometrial lesion regression in mice with FMS-like tyrosine kinase (Flt-1) gene-modified endometrial stem cell transplantation, which lowers angiogenesis and enhances endometriosis. Viral vectors mediate all of the cell treatments mentioned. Genetically modified mesenchymal stem cells are considered new cell therapy approaches for infertility due to endometrial dysfunction. However, few human studies on gene modifications of stem cells limit the results. Thus, other types of stem cells, comprising embryonic and pluripotent stem cells, should be experimented with and may be a future perspective in this field. Keywords: Genetically modified, Stem cell, Endometrial dysfunction, Infertility, Bone marrow. P-79 Long-term psychological effects of social egg freezing in women who do not pursue pregnancy with preserved oocytes: A scoping review Shahali Sh, Joukar M. Department of Reproductive Health and Midwifery, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran. Email: shadab.shahali@modares.ac.ir Background: Social egg freezing (SEF) has emerged as a reproductive strategy for women aiming to preserve fertility for non-medical reasons. While the procedure offers perceived biological and social advantages, the long-term psychological implications, particularly for women who do not use their cryopreserved oocytes, are underexplored. Initial emotional responses often include relief and empowerment, but over time, some women may experience regret, uncertainty, or dissatisfaction. This underscores the importance of understanding the long-term psychosocial effects of SEF. Objective: This scoping review evaluates the literature on the long-term psychological effects of SEF in women who do not attempt pregnancy using their preserved oocytes. Materials and Methods: A systematic search was conducted across major databases, including PubMed, Scopus, and Web of Science, using predefined criteria and MeSH terms to identify studies focused on women who underwent elective SEF and did not use their frozen oocytes, with a long-term follow-up of at least 1 yr post-freezing. Data extraction and thematic synthesis were performed in accordance with PRISMA-ScR guidelines to map key findings and research gaps. Eligible study types included quantitative, qualitative, mixed-methods studies, reviews, and relevant case series. Only English-language articles were considered, with no restrictions on publication date. Studies related to medical egg freezing, those involving oocyte use, studies lacking psychological data, short-term follow-up, non-scholarly articles, editorials, and non-English publications (if translation was not feasible) were excluded. The study selection, data extraction, and thematic synthesis processes were independently carried out by 2 reviewers. Results: A total of 300 records were identified (PubMed: 120, Scopus: 85, Web of Science: 95); after removing 110 duplicates, 190 records were screened. Following title/abstract review and full-text assessment, 15 studies met the inclusion criteria and were included in the scoping review. Key findings were categorized into 2 themes: 1) evolving emotional states: many women initially experienced relief and empowerment from egg freezing; however, psychological responses often evolved, with some expressing regret or uncertainty while others reported sustained satisfaction. 2) awareness and expectations: women frequently cited inadequate pre-procedural counselling regarding the likelihood of oocyte utilization, contributing to diverse emotional outcomes. Conclusion: The psychological effects of unused SEF are complex and multifactorial, influenced by personal and contextual dynamics. While many women derive a sense of control and reduced reproductive pressure, a notable subset experiences negative psychological consequences, emphasizing the critical need for comprehensive counseling and post-procedural support. Further longitudinal research is essential to deepen understanding and optimize this population's clinical and psychosocial care strategies. Keywords: Pregnancy, Egg freezing, Scoping review, Psychological. P-80 Chronic administration of methadone induces structural changes in the ventral prostate of Wistar rats Sanjari A1, Hassanzadeh Taheri MM1, Namaee MH2, Shadi M2, Hosseini M2, Sha'bani A2. Department of Anatomy, School of Medicine, Birjand University of Medical Sciences, Birjand, Iran. Department of Medical Microbiology, School of Medicine, Infectious Diseases Research Center, Birjand University of Medical Sciences, Birjand, Iran. Email: mmhtahery35@gmail.com Background: Methadone is a synthetic opioid frequently utilized in addiction treatment and has been demonstrated to influence several physiological systems. However, its effects on prostate health are not well understood. Objective: This study investigated the impacts of methadone and opium tincture on the morphology of prostate tissue. Materials and Methods: In this experimental study, 18 adult male Wistar rats, (8-10 wk, 200 ± 20 gr) were employed. The subjects were randomly assigned to 3 equal groups (n = 7/each): control, opium tincture, and methadone syrup. Throughout the study, the control group received 1 cc of normal saline orally once daily for 9 wk. The rats in the opium tincture and methadone syrup groups were initially administered escalating doses of opium and methadone orally during the 1st wk. Following this, they were treated with the maximum doses of opium tincture (150 mg/kg) and methadone syrup (16.25 mg/kg) for an additional 8 wk. Upon completion of the treatment period, the animals were euthanized, and blood and prostate samples were collected for analysis of testosterone concentration and histological evaluation. Results: In comparison to the control group, the prostate weight index (p < 0.001) and serum testosterone concentration (p < 0.05) were significantly reduced solely in the group receiving opium tincture. Additionally, treatment with opium tincture led to a significant decrease in the epithelial height of the ventral prostatic acini (p < 0.001). In contrast, methadone treatment resulted in a significant increase in epithelial height (p < 0.01). Moreover, a notable increase in stromal space within the ventral prostate acini was observed in the methadone-treated group, indicating enhanced cellular proliferation in this region. Conclusion: Prolonged administration of methadone syrup increased the proliferation of both prostatic stromal and epithelial cells. These structural and morphometric alterations may represent potential risk factors for developing adverse remodeling processes in the ventral prostate of rats. Keywords: Methadone, Addiction medicine, Prostate, Testosterone, Rats. P-81 Global, regional, and national prevalence and disability-adjusted life years for primary infertility in Iran and provinces of Iran: Results from the global burden of disease study, 1990-2021 Kolahi AA1, Azadi Hosseinabad N2. Social Determinants of Health Reaserch Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran. Department of Community Medicine, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran. Email: a.kolahi@sbmu.ac.ir Background: Primary infertility refers to the inability of a couple to achieve a pregnancy after at least 12 months of regular, unprotected sexual intercourse, provided they have never conceived a child before. Objective: In this study, the results of the Global Burden of Disease (GBD) 2021 are presented and an assessment of current trends in the burden of primary female and male infertility diseases 1990-2021 at the global, regional and national levels and all provinances of Iran is presented. Materials and Methods: This cross-sectional study utilized publicly available data from the GBD study to examine the point prevalence and years lived with disability (YLDs) at the global, regional, national, and provincial levels in Iran between 1990 and 2021. The analysis included point prevalence, YLD counts, and rates per 100,000 populations, all reported with their 95% confidence intervals. Trends were evaluated for 1990 and 2021, with provincial-level comparisons in Iran. Results: Global: in 2021, age-standardized point prevalence was 732.1 (95% UI: 363.2-1329.8) in women and 426.9 (189.9-827.6) in men, reflecting increases since 1990 (women: 577.2; men: 344.0). Iran: prevalence remained high, with 1237.8 (596.4-2365.4) in women and 843.4 (380.9-1672.8) in men in 2021. Provincial disparities were observed, with highest prevalence in Khuzestan, Ilam, and Mazandaran (women) and Isfahan, Yazd, and Markazi (men). YLDs: Iran’s rate (7.8; 2.8-19.2) exceeded the global average (4.3; 1.6-9.9) in 2021. Conclusion: Primary infertility prevalence and YLDs in Iran were substantially higher than global and MENA region averages, with persistent provincial inequalities. While the analysis focused on 1990 and 2021 as benchmark years, further research is needed to explore interim trends and drivers. Keywords: Infertility, Global burden of disease, Prevalence, Years lived with disability. P-82 Novel endometrioma model causes infertility via cystic lesions, histopathologic, and hormonal changes in mice Afkhami E1, Movahedin M1, Anvari M2, Aflatoonian B3. Anatomical Sciences Department, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran. Biotechnology Research Center, Yazd Reproductive Sciences Institute, Shahid Sadoughi of Medical Sciences, Yazd, Iran. Stem Cell Biology Research Center, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Email: movahed.m@modares.ac.ir; b.aflatoonian@ssu.ac.ir Background: Endometriosis is characterized by the presence of tissue comparable to the endometrium found outside the uterus, affecting 5-10% of women during their regenerative a long time. Although the torment side effect is one of the most common signs of this gynecologically common malady, up to 50% of women with endometriosis endure from infertility. In expansion to the anatomical obstructions, altered ovarian function in women with endometriosis may be attributed to fertility. Ovarian function can be divided into three essential components: 1) the secretion of ovarian hormones, 2) the support of follicular development from the preantral stage to the postovulatory luteal stage, and 3) the storage of dormant oocytes. Endometriosis can affect ovarian functions in different ways. Here, the affiliations between ovarian functions and endometriosis are talked about together with current prove. Objective: Our objective was to create a mouse model for ovarian endometriosis and assess how endometriosis impacts ovarian tissue macroscopically, microscopically, and hormonally. Materials and Methods: This experimental study included three groups: control (in this group, the mice remained intact), sham (in this group, surgery was performed without any treatment), and model, each consisting of 4 NMRI mice (6-8 wk, 25-30 gr). After performing bursectomy in the proestrus stage, endometriosis lesions were created in the model group by suturing 5×5 mm pieces of uterine tissue onto the ovarian surface. All surgeries were performed in the proestrus phase. After maintaining controlled conditions for 4 wk, blood samples were collected from the mice for comparison with the control group. Furthermore, the mean weight of lesions in the model group was compared to the control and sham groups. Subsequently, the generated ectopic tissue and the ovary were analyzed for histological assessment using hematoxylin-eosin staining. Furthermore, Masson's trichrome staining, along with Image J software, was utilized to examine and quantify the fibrotic tissue area. Results: Out of four tissue samples sewn onto the ovarian surface, histopathology confirmed three cases of endometriosis lesions (75%). The average weight of the lesions and the concentration of 17β estradiol in the model group were noticeably higher than those in the control group (p < 0.05). The model group exhibited the development of endometrial glands and stromal cells. The extent of fibrotic regions in the model group was considerably greater than in the control group (p < 0.05). Conclusion: Our findings indicated that epithelial and mesenchymal stromal cells found in a piece of a mouse's uterine horn can infiltrate the ovary and form a model for endometriosis. Additionally, this model offers a chance to assess agents or methodologies to combat ovarian endometriosis within a preclinical framework. Keywords: Endometrioma, Mouse model, 17β estradiol, Proestrus phase. P-83 Novel technologies for the treatment of infertility with mesenchymal stem cells as a bio organ Solati A. Department of Reproductive Biology, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran. Email: arezoo.sulati@yahoo.com Inability to conceive after having regular unprotected sex for more than 12 months is defined as infertility and can be due to male, female, or both fertility problems, but sometimes the cause of infertility is unknown. Infertility as one of the most common troubles in the world is affecting approximately 15% of couples worldwide. It has negative consequences on society and infertile individuals, and its prevalence has increased all over the world for various reasons. In this review study, a search was conducted using international databases (Medline/PubMed, Scopus, and ISI/Web of knowledge), and national databases (Scientific Information Database, MagIran, IranMedex, and IranDoc) from 2015-2024. Subsequently, Persian and English language papers referring to "Cell therapy" and "infertility" were included. Stem cells release a variety of bioactive factors, which can either remain freely soluble or be encapsulated within extracellular vesicles such as exosomes and microvesicles. The therapeutic application of mesenchymal stem cell (MSC) secretions -referred to as conditioned media (CM)- or purified extracellular vesicles from MSCs has demonstrated comparable benefits to direct stem cell transplantation in various disease models, enhancing functional recovery. Accordingly, in recent years, there has been an increasing focus on its treatment. Many infertile couples (80%) can be cured with recent advances in assisted reproductive technology. However, many couples are unable to conceive despite using assisted reproductive technology. Recently, stem cells have been considered therapeutic targets for numerous diseases, including infertility, due to their self-renewal and differentiation potential into almost any cell type, and they can even correct genetic disorders in children. Therefore, clinical researchers have investigated the therapeutic use of MSCs in infertility. In general, the extensive clinical application of MSCs is considered a hopeful option in the development of stem cell-based infertility therapies. Reliable success has been achieved in the differentiation of stem cells into germ cells, and clinical trials of transdifferentiated MSCs may provide valuable results to combat the increase in infertility in the world. In general, the start of clinical trials and the use of MSCs in infertility clinics can promise new treatment horizons for infertile couples. Keywords: Infertility, Mesenchymal stem cells, Transdifferentiation, Assisted reproduction technology. P-84 In vitro gametogenesis: Ethical considerations and future perspectives Mirzaei A1, Rezaei-Boroujeni S1, Arjmand B2. Iranian Cancer Control Center (MACSA), Tehran, Iran. Cell Therapy and Regenerative Medicine Research Center, Endocrinology and Metabolism Molecular-Cellular Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran. Email: barjmand@tums.ac.ir In vitro gametogenesis (IVG) is a novel biomedical technology that has succeeded in the conservation of endangered species and in accelerating the genetic selection of livestock. Also, one of the most distinguished innovations is the role of IVG in human infertility. However, developing IVG for human infertility is still experimental. IVG is a complicated method that manages infertility through the molecular mechanism of germ cells, embryonic stem cells, and pluripotent stem cells, which can be the origin of in vitro-derived gametes. IVG reduces oocyte donation's psychological and physical challenges, enables women to be fertile in advanced ages and even post-menopausal fertility, and helps people find appropriate oocytes or embryos (in genetic features). In addition to several advantages, some challenges include moral, legal, social, and ethical concerns. The undefined concept of parenthood especially in same-sex partners, single individuals, and even deceased ones, misuse of IVG in eugenics and artificial baby production, ignoring the authority of patients with infertility and justice, and increased risk of genetic mutations in a child’s future are some adverse applications of IVG which lead to ethical challenges. IVG emerges as an attractive therapeutic approach to infertility and other reproductive disorders. However, due to the wide range of its developments, even for non-therapeutic procedures, many ethical issues arise based on the cultural and religious background of different societies. To fully benefit from IVG's potential, developing some guidelines for IVG applications is essential. In this regard, standard protocols avoid misuse and adverse effects and improve therapeutic outcomes. Keywords: Gametogenesis, IVG, Ethics, Infertility. P-85 Impact of stem cell therapy by stromal vascular fraction on reduction of testicular injury Shahcheraghi SH1, Lotfi M2. Department of Molecular Medicine, School of Advanced Technologies in Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Abortion Research Center, Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Email: marzeih.lotfi@gmail.com The utilization of stem cells can reduce testicular damage and enhance the generation of sperm. Adipose-derived stromal vascular fraction (SVF) can be easily obtained without the need for in vitro expansion, potentially reducing the risks associated with xenogenic nutritional foundations, bacterial contamination, and other factors related to cell culture. The purpose of the current review is to investigate the impact of SVF on reduction of testicular injury. This scientific review as titled impact of stem cell therapy by SVF on reduction of testicular injury explored several studies. These were searched in scopus, Pubmed and Web of science by applying keywords included SVF, testicular injury and stem cell therapy in both combinations of OR and AND. Time frame of related articles was from 2021-2024. The language of all of articles was English. Using autologous uncultured SVF can help protect the testis from injury caused by testicular ischemia-reperfusion and support spermatogenesis, offering important clinical implications for preventing infertility resulting from testicular torsion-detorsion. In a study investigating the use of bone marrow mesenchymal stem cells (BM-MSCs) as a new approach against doxorubicin-induced toxicity in rat testes, the results demonstrated that BM-MSCs significantly reduced testicular oxidative stress by lowering malondialdehyde levels and enhancing antioxidant capacity. Histologically, the damage caused by doxorubicin, including testicular atrophy, severe spermatogenesis impairment, and reduced diameter and thickness of the seminiferous tubules, was notably improved following BM-MSC administration. Additionally, the effects of SVF on busulfan-induced testicular damage in rats indicated that SVF alleviated oxidative stress in both testis tissue and serum. Injecting SVF into damaged testicular tissue led to an increase in healthy spermatozoa numbers and a decrease in unusual tail numbers. Keywords: Stromal vascular fraction, Testicular, Injuries, Stem cells, Therapy. P-86 Engineering innovations and biotechnological advances in addressing infertility due to uterine cancer Dortaj H1, Pourentezari M2, Dortaj S3, Rajabi A4. Tissue Engineering Research Group (TERG), Department of Anatomy and Cell Biology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran. Department of Biology and Anatomical Sciences, Faculty of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Dubai Pharmacy College, Dubai, United Arab Emirates. Department of Tissue Engineering and Applied Cell Science, Shiraz University of Medical Sciences, Shiraz, Iran. Infertility is a significant concern for women diagnosed with uterine cancer, as the disease and its treatments can severely impact reproductive health. This literature aims to explore cutting edge engineering and biotechnology solutions that address infertility resulting from uterine cancer. Recent advancements in reproductive technologies such as in vitro fertilization and cryopreservation have shown promise in preserving infertility in women undergoing cancer treatments. Since the structure and function of uterus is complex, applied uterine tissue engineering requires highly specialized biomaterials with natural extracellular microenvironment. Innovative biomaterials and tissue engineering techniques are being developed to reconstruct the uterine environment, potentially restoring fertility post-treatment. In our research the role of hormonal therapies and fertility preservation strategies that minimize the risk of cancer recurrence will focused. We will also discuss the ethical implications and patient-centered approaches in the application of these technologies, ensuring that woman’s reproductive rights and choices are prioritized. Furthermore, interdisciplinary collaboration between oncologists, reproductive specialists, and bioengineers will be highlighted, showcasing how integrated efforts can lead to improved outcomes for women facing infertility due to cancer. Keywords: Infertility, Uterine cancer, Biotechnology, Reproductive health, Tissue engineering, IVF. P-87 Protective effect of crocin on steroidogenesis disturbances in human granulosa cells of normal and polycystic ovaries Mohammadi Z1, Khodabandeh Z2, Masjedi F3. Department of Biology, College of Science, Shiraz Branch, Islamic Azad University, Shiraz, Iran. Stem Cells Technology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran. Nephro-Urology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran. Email: masjedi_f@sums.ac.ir Background: Estradiol and progesterone are the main steroid hormones that may play essential roles during the follicular and luteal phases of the menstrual cycle, oocyte fertilization, and embryo implantation. The granulosa cells of women with polycystic ovary syndrome (PCOS) fail to increase the expression of aromatase and 3β-hydroxysteroid dehydrogenase (3β-HSD), causing markedly decreased estrogen and progesterone secretion. Crocin, a main component of saffron, has been reported to act as a regulator of some reproductive pathways. Objective: In this study, the role of crocin was compared in regulating the endocrine function of granulosa cells in women with normal and polycystic ovaries. Materials and Methods: This experimental study was performed on ovarian granulosa cells (GCs) of 40 women who were referred to Shiraz Ghadir Mother and Child Hospital, Shiraz, Iran between November 2023 and August 2024 for in vitro fertilization or intracytoplasmic sperm injection. Control (normal) group (N-GCs) consisted of 20 women with healthy ovaries diagnosed as male factor, tubal disease, unexplained infertility, as well as egg donors or patients with normal reserve of the ovary. Case (PCOS) group (PCO-GCs) consisted of 20 women with PCOS that their syndrome was diagnosed by a gynecologist according to Rotterdam criteria. Inclusion criteria were 18-35 yr old and a body mass index between 18.5-30 kg/m2. Participants were excluded from the study if they had major medical disorders (such as other hyperandrogenism states, thyroid disorders, endometriosis, chronic metabolic syndrome, and diabetes) or if they were cigarette smokers and alcohol consumers. Follicular aspirates included GCs collected from dominant follicles on the day of oocyte retrieval. The GCs were cultured in Dulbecco's modified Eagle's medium/F12 (DMEM-F12) medium. To study the effect of crocin on the aromatase and 3β-HSD activities, GCs (4×106 cells) were divided in half and then cultured in 6-well plates for 48 hr with or without crocin (200 µM). The media were collected to measure estradiol and progesterone as indicators of aromatase and 3β-HSD activity. Results: Basal estradiol (p = 0.039) and progesterone (p = 0.025) levels of the PCOS group were significantly lower than the normal group. In the crocin-treated GCs group, the total level of estradiol and progesterone at 48 hr were increased compared to the untreated-GCs group (p < 0.0001). However, treatment with crocin did not return the production of sex hormones to normal levels. Conclusion: Our results showed that ovarian aromatase and 3β-HSD activities in PCOS were impaired relative to healthy women. An increase in aromatase and 3β-HSD activities characterizes the stimulatory effect of crocin. This effect on steroidogenic enzyme activity supports crocin's post-transcriptional modulation of these enzymes. Keywords: Estradiol, Crocin, Progesterone, PCOS, Granulosa cells. P-88 How does serum starvation affect the morphological, biochemical, and content heterogeneity of exosomes extracted from human adipose-derived mesenchymal stem cells? Heidari B1, Rajabi P2, Jaffari H2, Akbari N3, Soltani A4. Department of Regenerative Medicine and Biotechnology in Wound Healing, Medical Laser Research Center, Yara Institute, ACECR, Tehran, Iran. Department of Biology, SR.C, Islamic Azad University, Tehran, Iran. Reproductive Biotechnology Research Center, Avicenna Research Institute, ACECR, Tehran, Iran. Email: ban_heidari@yahoo.com Background: Exosomes, extracellular vesicles with diameters ranging from 40-160 nm. According to the size and content heterogeneity, they can be classified into Exo A (40-75 nm, CD63 biomarker, protein context "X"), Exo B (75-100 nm, CD9 biomarker, protein context "Y"), and Exo C (100-160 nm, CD81 biomarker, protein context "Z"). Objective: This study investigated the effects of serum starvation on the morphological characteristics, biochemical properties, stability, aggregation, and protein concentration of exosomes derived from adipose tissue mesenchymal stem cells (AD-MSCs). Materials and Methods: In the experimental study, 7 human adipose tissues were collected from healthy women by selective liposuction at Gandhi Hotel Hospital, Tehran. Iran. Adipose tissue-derived AD-MSCs were isolated and confirmed using flow cytometry and differential staining. The confirmed AD-MSCs were cultured under serum starvation (1% knock-out serum) and control (1% knock-out serum) conditions for 24 hr at 37°C, 5% CO2, 80% humidity, and 22% O2. The effect of serum concentration on apoptosis and differentiation was detected using acridine orange, alizarin red, oil red O, and toluidine blue staining. A scratch assay evaluated the migration of AD-MSCs under both conditions. Then, exosomes were isolated from both groups using ultracentrifugation (300x g/10 min, 2000x g/10 min, 10000x g/30 min, and 100000x g/70 min) and analyzed by scanning electron microscopy, fourier-transform infrared spectroscopy, transmission electron microscopy, dynamic light scattering), zeta potential, and BCA. Results: Serum starvation does not affect the survival rate (apoptosis) and differentiation potential of AD-MSCs into chondrocytes, osteocytes, and adipocytes (p = 0.059). However, AD-MSCs in the serum starvation condition demonstrated higher migration ability compared to the control group (p = 0.025). The expression of the CD63 molecular marker in the extracted exosomes from AD-MSCs under serum starvation was 60.4%. We successfully obtained Exo A in the serum starvation condition based on the biochemical and morphological characteristics of exosomes. DLS analysis showed that 95% of exosomes from the serum starvation group measured 48.9 ± 5.4 nm with the highest frequency at 47.7 nm; (mode: 47.7 nm), while 72% of nanoparticles in the control group were 350.2 ± 43.6 nm with the highest frequency at 339.8 nm (p = 0.031). Polydisperse intensity in the serum starvation and control groups were 0.492 and 0.727, respectively (p = 0.028). Transmission electron microscopy and zeta potential analyses indicated improved dispersion, stability and uniformity of exosomes in the serum starvation group (p = 0.044). Zeta potentials in the serum starvation and control groups were -9.0 mV and -1.0 mV, respectively (p = 0.035). FTIR analysis revealed subtle changes in biochemical composition, with higher protein contents in the serum-starved exosomes (p = 0.074). Bradford analysis demonstrated 51.399% and 21.754% total protein concentration in the serum starvation and control groups, respectively (p = 0.031). Conclusion: Serum starvation not only improves the morphological, biochemical and functional characteristics of exosomes, but also leads to the isolation of Exo A. Keywords: Mesenchymal stem cells, Exosomes, Serum starvation. P-89 Revolutionizing male fertility solutions: 3D printing artificial testes with testicular tissue-derived bio-inks Kokabi Hamidpour Sh1, Arjmand B2. Iranian Cancer Control Center (MACSA), Tehran, Iran. Cell Therapy and Regenerative Medicine Research Center, Endocrinology and Metabolism Molecular-Cellular Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran. Email: barjmand@sina.tums.ac.ir Testicular scaffolds are categorized as an innovative approach for fertility preservation in individuals at high risk of reproductive loss due to medical conditions or treatments. Recent advances in tissue engineering, particularly in bioinks and 3D bioprinting, show promise in creating functional artificial testes. The engineered structures can restore sperm production by mimicking the natural testicular microenvironment. As male infertility rates rise, exploring such biotechnological solutions becomes increasingly urgent. This study aimed to evaluate the potential of bioinks in creating functional artificial testes that may restore sperm production. The study analyzed studies conducted since 2020 using electronic databases like PubMed, Scopus, and Web of Science, focusing on research studies of any design as well as Persian and English written papers. Keywords included "Artificial testes", "3D printing", and "testicular tissue-derived bio-inks". Observations have shown that 3D bioprinting of alginate-based scaffolds is feasible in vitro. Reports indicate that after bioprinting the fabricated scaffolds and culturing testicular cells on the scaffolds, there is a difference between number of spermatogonia stem cells with the control group, indicating the creation of the desired model. The experimental results demonstrated that 3D-printed scaffolds made with 5% Tissue Extracellular Matrix (T-ECM) had a uniform surface structure in both in vitro and in vivo environments, exhibiting strong cell attachment and high biocompatibility. Also, recent research has focused on the use of decellularized extracellular matrix bioinks to develop artificial testes, which was accompanied by significant results. All in All, it can be stated that reproductive bioengineering is advancing with the intention to develop biomaterials to restore male fertility and address the increasing cases of male infertility as well. Techniques like 3D bioprinting and microfluidic systems are innovative for the development of testicular organoids which can mimic the testicular microenvironment. In this context, 3D printing artificial testes can decrease the need for experimental animals in research on spermatogenesis.  Keywords: 3D printing, Artificial testes, Bio-inks, Male fertility. P-90 Morphological, chemical, and functional characteristics of nanoparticles derived from human placental extract, applications in regenerative medicine Heidari B1, Jaffari H2, Rajabzadeh H2, Zandsalimi K3, Nazemizadeh A1, Soltani A4. Department of Regenerative Medicine and Biotechnology in Wound Healing, Medical Laser Research Center, Yara Institute, ACECR, Tehran, Iran. Department of Biology, SR.C, Islamic Azad University, Tehran, Iran. Department of Medical Laser (MLRC), Medical Laser Research Center, Yara Institute, ACECR, Tehran, Iran. Reproductive Biotechnology Research Center, Avicenna Research Institute, ACECR, Tehran, Iran. Email: ban_heidari@yahoo.com Background: Several studies have shown the effect of placenta extract on the immune system, inflammation, oxidative stress, skin rejuvenation, and treatment of acute and chronic wounds, alopecia, psoriasis, and vitiligo. Objective: We aimed to successfully isolate and characterize the nanoparticles from the human placenta for applications in tissue engineering and regenerative medicine. Materials and Methods: In the descriptive study, 5 human placentas were collected from healthy women at Gondhi Hotel Hospital, Tehran, Iran. Inclusion criteria included ages 35-45 yr, full-term pregnancies (38-40 wk) with no history of drug addiction, metabolic diseases, liver disorders, and mycoplasma, bacterial, fungal, and viral infections. After macroscopic and microscopic evaluation of placenta, we separated the chorionic villi and digested them using mechanical and enzymatic digestion (trypsin and pepsin). The digested suspension was filtered through a 70 µm mesh, centrifuged at 300x g/10 min, 2000x g/10 min, 10000x g/30 min, and 100000x g/70 min, and then lyophilized. Nanoparticles in the placenta extract were analyzed using scanning electron microscopy, fourier-transform infrared spectroscopy, transmission electron microscopy, dynamic light scattering, and zeta potential. Total protein concentration was also detected using the Bradford test, and the superoxide dismutase was evaluated by calorimetric method. Results: Nanoparticles extracted from the chorionic placenta exhibited molecular markers CD63, CD9, and CD81 with the expression of 60.4%, 65.4%, and 34.1%, respectively. dynamic light scattering analysis demonstrated that 87% of nanoparticles in the placenta extract had a diameter of 121.7 ± 19.9 nm, with the highest frequency of nanoparticles at 124.5 nm; mode: 12.45 nm). Meanwhile, 13% of nanoparticles measured 32.5 ± 2.8 nm, with a mode of 124.5 nm). The Z-average and polydispersity index of extracted nanoparticles in placenta extract was 92.8 nm and 0.349, respectively. transmission electron microscopy and SEM analyses showed that the nanoparticles in the placenta extract had a spherical, hollow, and homogeneous morphology with uniform distribution. The zeta potential of nanoparticles derived from placenta extract was 34 mV, indicating stability. These nanoparticles remained stable without electrostatic fluctuations over time. The protein concentration in the placenta extract was 28.274%, and the superoxide dismutase antioxidant activity was 34 ± 0.30 U/mg. FTIR analysis identified various functional groups in the placenta extract, including amide I and II peaks, C-O peaks, and P = O peaks. Conclusion: Nanoparticles derived from human placenta extract can be effectively used to accelerate wound healing in tissue engineering and regenerative medicine. Keywords: Placenta, Nanoparticles, Regenerative medicine, Tissue engineering. P-91 Bioactive glass incorporated with zinc oxide for regenerative medicine Ghasemi-Esmailabad S1, Moshrefi M2, Nikukar M2, 3, Simorgh S1. Department of Tissue Engineering and Regenerative Medicine, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, Iran. Nanotechnology and Tissue Engineering Research Center, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Department of Advanced Medical Sciences and Technologies, School of Paramedicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Email: srsimorgh@gmail.com Bioactive glass (BG) and zinc oxide (ZnO) have unique properties, but their combination offers exciting possibilities for use in regenerative medicine by addressing key challenges in tissue repair, such as enhancing biocompatibility, angiogenesis, and antimicrobial properties. The synergy between BGs and ZnO has broadened their applications, from hard tissue to soft tissue regeneration. This review focuses on the properties of ZnO-doped BGs in soft and hard tissue regeneration, as well as their potential in reproductive tissue engineering. The study evaluates all the researches on ZnO-doped BGs. ZnO-doped BGs have shown effectiveness in some pathways including: 1) ion release: controlled release of ions such as zinc, calcium, and silicon to support cellular activities like proliferation, differentiation, and matrix formation. 2) antibacterial: ZnO conveys strong antimicrobial properties by disrupting bacterial cell membranes and preventing biofilm formation, which are crucial for infection control. 3) anti-inflammatory: ZnO regulates inflammatory responses and promotes healing by reducing chronic inflammation at the site of injury. 4) angiogenesis: in some dosages, ZnO enhances the angiogenesis process which is crucial for healing. Briefly, BGs-doped ZnO conduct the following properties: 1) hard tissue regeneration: stimulating osteoblasts and enhancing vascularization in bone repair. 2) soft tissue regeneration: promoting fibroblast proliferation and angiogenesis, useful in wound healing, burns, and chronic wound treatment. 3) dental applications: preventing infections, supporting enamel and dentin repair, and promoting remineralization. 4) reproductive tissue engineering: female reproductive system: repairing uterine defects, supporting endometrial regeneration, and providing a matrix for ovarian cell growth (hormonal restoration and fertility preservation). 5) male reproductive system: testicular tissue regeneration and drug delivery for testicular disorders. 6) drug delivery: serving as carriers for hormones, growth factors, and antimicrobial agents in conditions like endometriosis and infections. Despite their promising potential, ZnO-doped BGs face challenges such as cytotoxicity at high ZnO concentrations, the need for improved production scalability, and a lack of long-term clinical studies to assess safety and effectiveness, particularly in reproductive tissues. Further research is necessary to optimize their use in regenerative medicine. Keywords: Bioactive glass, Zinc oxide, Regenerative Medicine. P-92 Temperature and pH sensitive lipid nanocarriers (liposome) containing Foeniculum vulgare essential oil and its potential bioactivity against ovarian cancer cell line Majdizadeh M1, Shahi-Malmir H1, Yaeghoobi M2, Eftekhari-Vash L3, Golbashy M4, Haghirosadat BF5. Nano-Biotech Foresight Company Biotechnology Campus, Science and Technology Park of Yazd, Yazd, Iran. Faculty of Medicine, Shahroud University of Medical Sciences, Shahroud, Iran. Department of Microbiology, Faculty of Basic Sciences, Maragheh Brench, Islamic Azad University, Maragheh, Iran. Department of Plant Production and Genetics, Faculty of Agriculture, Agricultural Sciences and Natural Resources University of Khuzestan, Mollasani, Iran. Biotechnology Research Center, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Email: fhaghirosadat@gmail.com Background: Ovarian cancer is one of the deadliest cancers among women, claiming a significant portion of lives each year. Additionally, these cancers can have a profound impact on pregnancy and fertility. Recently, the use of nanocarriers loaded with anticancer compounds has emerged as a promising strategy for cancer treatment, offering potential effectiveness with fewer side effects. Objective: This study aim to design lipid nanocarriers encapsulating Foeniculum vulgare essential oil and evaluate their toxicity in both ovarian cancer (A2780 cell line) and human fibroblast (HFF) cell lines. Materials and Methods: Initially, liposomal formulations (F1-F5) were prepared using different molar ratios of phosphatidylcholine and cholesterol along with Foeniculum vulgare essential oil. The encapsulation efficiency and release profile of the essential oil from each formulation were then evaluated. The formulation with the highest encapsulation efficiency and the best release profile was selected, and the physicochemical properties of the resulting nanoparticles, including zeta potential, particle size, and particle morphology, were investigated. In the next step, the toxicity of the selected formulation on the growth of ovarian cancer cells (A2780 cell line) and the HFF cell line was examined using the methyl thiazol tetrazolium (MTT) method. Finally, the entry of the nano-system into ovarian cancer cells was investigated. Finally, the physicochemical stability of the optimized nano-formulation was monitored for 120 days under refrigerated conditions (4 ± 1°C) in light-protected containers. Particle size, zeta potential, and encapsulation efficiency were measured at 30-day intervals. Results: Formulation F4 was selected due to its higher encapsulation efficiency (58.2%) and its slow, continuous release profile over 48 hr. The nanoparticles obtained from this formulation (F4) had a size of 120.6 nm and a zeta potential of -15.3 mV. Electron microscope images revealed that the surface of the nanoparticles was smooth and spherical, with no aggregation observed. MTT assay results demonstrated that the liposomal essential oil exhibited greater toxicity than the free essential oil against the A2780 ovarian cancer cell line p < 0.001, while showing negligible toxicity to the HFF cell line. Moreover, the IC50 values for the essential oil-loaded nanocarrier and free essential oil against the A2780 cell line were 51.9 μg/mL and 59.3 μg/mL, respectively. Furthermore, cell uptake studies indicated that the liposomal system containing the essential oil successfully entered ovarian cancer cells. Stability analysis of essential oil-loaded nanoliposomes revealed a 7.5% decrease in encapsulation efficiency, an 11.2 nm increase in particle size, and a 5.5 mV shift toward more positive zeta potential values over 120 days. Conclusion: Considering the high prevalence of ovarian cancer and its detrimental effects on women's fertility and pregnancy, along with the numerous side effects associated with conventional cancer treatments, the use of nanoliposomes containing Foeniculum vulgare essential oil as an antiproliferative agent is proposed for therapeutic research in ovarian cancer. Keywords: Ovarian neoplasms, Cell line, Tumor, Foeniculum, Liposomes, Nanoparticles, Antineoplastic agents. 6th Congress of Reproductive Genetics P-93 Cytogenetic signatures of infertility: Report of 4105 infertile couples Iravani F1, Namjoo Kh2, Ghasemi N2, Montazeri F2, Kalantar SM1, 2. Department of Medical Genetics, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Abortion Research Center, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Email: kalantarsm@ystp.ac.ir Background: Fertility refers to the ability to achieve a clinically successful pregnancy. More than 186 million people in the world suffer from infertility, and the reason for approximately 15% of couples experiencing infertility is unexplained. Chromosome abnormalities can significantly impact fertility and reproductive outcomes with increased miscarriage risk, birth defects, and assisted reproduction. Objective: Here, we want to study infertile couples and their chromosomal aberrations. Materials and Methods: This retrospective study analyzed 4,105 clinical profiles of infertile couples referred to the Yazd Reproductive Sciences Institute (Yazd, Iran) for comprehensive cytogenetic screening between April 2016 and March 2024. Prior to initiating assisted reproductive techniques, peripheral blood lymphocyte cultures were collected from participants for karyotype analysis using Giemsa-banding techniques and their cytogenetic map were evaluated. Results: Analysis of the infertile karyotype screening results identified an increased incidence of chromosome abnormalities as a signature of genomic instability. The study revealed that from a total of 4105 samples, 3774 cases (91.94%) had a normal karyotype and 331 cases (8.06%) had chromosomal aberrations. These aberrations were found in 86 (25.98%) females and 245 (74.02%) males. The cases with different kinds of chromosome variants and infertility included 39 cases (11.78%) with structural aberrations, 122 cases (36.86%) with numerical abnormality, 9 case (2.72%) with complex abnormality (≥ 2), and 161 cases (48.64%) with polymorphic variants. Conclusion: The findings of this study underscore the importance of detecting chromosomal abnormalities in infertile couples, as it facilitates the elucidation of infertility etiology and informs the optimization of treatment approaches. Keywords: Infertility, Cytogenetics, Karyotype, Chromosome aberrations. P-94 Investigating the effect of spirulina on the activation of Fas/Fas Ligand-Apoptosis signal-regulating kinase 1-p38 pathway in breast and prostate cancer cells Faramarzi A1, Moradi B2. Fertility and Infertility Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran. Anatomy Department, School of Medicine, Iran University of Medical Sciences (IUMS), Tehran, Iran. Email: a.faramarzi90@gmail.com Background: Sufferers with advanced or recurrent cancer have a poor prognosis; their 1-year survival rate is only 10-20%. Chemotherapy is considered the same old treatment for sufferers with advanced or recurrent cancer. However, resistance to treatment might also broaden, ensuing compromising the efficacy of the drug to treat advanced or recurrent cancer. It is widely known that regular intake of certain natural substances, so-referred to as chemopreventive agents, can lessen the risk of certain cancers. Consequently, spirulina isan attractive chemotherapeutic agent due to its useful health outcomes.  Objective: This study aims to determine the effects of spirulina on proliferation, apoptosis, nitric oxide secretion and the expression of genes related to apoptosis in breast and prostate cancer cells. Materials and Methods: In this experimental study, a hydroalcoholic extract of spirulina was prepared. The 3-(4, 5-dimethylthiazolyl-2)-2, 5-diphenyltetrazolium bromide method was used to investigate the effect of the extract on the survival of breast cancer, prostate cancer and fibroblast cells. DNA fragment percentage and nitric oxide level were measured using spectroscopic methods. A real-time polymerase chain reaction test was used to analyze the Apoptosis signal-regulating kinase 1, p38, Fas and Fas Ligand gene expression of control and treated cells. Results: After 24, 48, 72 and 96 hr, cell viability decreased concentration-dependent. After 24 hr, IC50 concentration of apoptotic spirulina extract significantly increased nitric oxide production in both cell lines (p ˂ 0.001). It caused a significant increase in the expression of ASK1 and p38 and Fas and FasL genes in both lines (p ˂ 0.001). Conclusion: Spirulina has cytotoxic effects on breast and prostate cancer cells and induces apoptosis by inhibiting nitric oxide production and activation of the Fas/FasL-ASK1-p38 pathway. Keywords: Spirulina, Prostate cancer, Breast cancer, Aapoptosis. P-95 Investigating the effects of spirulina on proliferation, apoptosis, nitric oxide release and the expression of Ras/mitogen activated protein kinase pathway genes in cervical cancer cells (CC1-PI 19) Moradi B1, Faramarzi A2. Anatomy Department, School of Medicine, Iran University of Medical Sciences (IUMS), Tehran, Iran. Fertility and Infertility Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran. Email: a.faramarzi90@gmail.com Background: It is well known that the regular consumption of some natural substances, chemopreventive agents, can reduce the risk of certain cancers. Therefore, spirulina an attractive chemotherapeutic agent due to its beneficial health effects. So, identifying treatment methods with fewer side effects is needed. Objective: This study aimed to investigate spirulina's effects on proliferation, apoptosis, nitric oxide secretion and gene expression.  Materials and Methods: In this experimental study, after the treatment of cells with spirulina, survival was measured by the 3-(4, 5-dimethylthiazolyl-2)-2, 5-diphenyltetrazolium bromide assay. The diphenylamine test and Burley's nitric oxide test were used to measure apoptosis using the Griess reaction. Gene expression was measured and quantified by real-time polymerase chain reaction. Ras/mitogen activated protein kinase pathway was performed in cervical cancer cells. Results: The proliferation inhibition and cytotoxic effects of spirulina on cancer cells and fibroblasts were concentration and time dependent. The IC50 of spirulina for cancer cells was 14.39 ± 0.87, 5.19 ± 0.34, 1.55 ± 0.08, and 0.83 ± 0.008 for 24, 48, 72, and 96 hr, respectively. Also, IC50 for fibroblast cells was 14.23 ± 307.26, 164.07 ± 5.11, 113.56 ± 1.53, and 85.37 ± 0.77 for 24, 48, 72, and 96 hr, respectively. Treatment with the IC50 concentration of spirulina induced a significant increase in apoptosis, and increased the expression of rat sarcoma family genes (Harvey RAS, Kirsten RAS, and neuroblastoma RAS), rapidly accelerated fibrosarcoma (ARAF, BRAF, and CRAF), mitogen-activated protein kinase kinase (MEK1, MEK2, MEK3, MEK4 and MEK5) and inhibited the extracellular signal-regulated kinase gene (p ˂ 0.001). Also, the IC50 concentration of spirulina significantly reduced nitric oxide production in cervical cancer cells (p ˂ 0.001). Conclusion: Spirulina may have anticancer effects through stimulation of apoptosis and inhibition of the Ras/MAPK signaling pathway. Keywords: Spirulina, Cervical cancer, Survival, Apoptosis, Nitric oxide. P-96 Investigating the effects of spirulina on Sortilin 1 gene expression and response to chemotherapy in ovarian cancer cells Moradi B1, Faramarzi A2. Anatomy Department, School of Medicine, Iran University of Medical Sciences (IUMS), Tehran, Iran. Fertility and Infertility Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran. Email: a.faramarzi90@gmail.com Background: Ovarian cancer with 40% recovery rate, is the most common reason of death of cancerous women in the United States. It is clear that routine intake of certain natural substances, chemopreventive agents, can decrease the incidence of certain cancers. So, spirulina is an attractive chemotherapeutic agent regard to its useful health properties. Objective: This study was conducted to determine spirulina's effects on Sortilin 1 gene expression and response to chemotherapy of ovarian cancer cells. Materials and Methods: In this experimental study, A2780s cell lines were treated with different concentrations of spirulina (50, 25, 12.5 mg/mL) that solved 70% methanol and were incubated for 24, 48, 72 and 96 hr. Cell viability was checked using the 3-(4, 5-dimethylthiazolyl-2)-2, 5-diphenyltetrazolium bromide method. Toxicity was measured by lactate dehydrogenase test. Apoptosis was evaluated by a diphenylamine test. Sortilin 1 gene expression was measured by real-time polymerase chain reaction. Finally, the effect of simultaneous treatment with spirulina and carboplatin on cell viability was measured. All analysis were done for every spirulina concentration and every time. Results: Cell viability decreased depending on concentration and time after treatment with spirulina. The half-maximal inhibitory concentration of the extract was 17.22, 5.43, 2.80 and 1.17 μg/ml for 24, 48, 72 and 96 hr (p ˂ 0.001). Apoptosis increased in a concentration-dependent manner (p ˂ 0.001). Sortilin 1 gene expression in cells decreased in a concentration-dependent manner after 24 hr (p ˂ 0.001). After 24 hr of treatment with carboplatin, a decrease in cell viability was observed (p ˂ 0.001). The half-maximal inhibitory concentration value of the extract was 28.01 μM for 24 hr. Simultaneous treatment with carboplatin and spirulina extract had a synergistic effect on cell viability (p ˂ 0.001). Conclusion: Spirulina hydroalcoholic extract had cytotoxic and apoptosis-inducing effects on ovarian cancer cells and increased the sensitivity of these cells to carboplatin chemotherapy agent.  Keywords: Spirulina, Sortilin 1 gene, Chemotherapy, Ovarian cancer, Carboplatin. P-97 Nicotine alters sperm miR-151-5p and expression of Cep72 in testicular tissue Faghani M1, Mohammadghasemi F1, Aligani M1, Esmaeili-Bandboni A2. Department of Anatomical Sciences, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran. Medical Biotechnology Research Center, School of Paramedicine, Guilan University of Medical Sciences, Rasht, Iran. Email: mfaghani2000@gmail.com Background: Nicotine as a toxic agent of cigarette smoke has adverse effects both on germ and somatic cells in the testis. Overexpression or knockout of the centrosomal protein 72 (Cep72) gene in somatic cells has been shown to impair the mitotic process. Cep72 is specifically expressed in spermatocytes and round spermatids in testicular tissue, indicating its importance in male germ cell development. In addition, microRNA-151-5p (miR-151-5p) has emerged as a critical post-transcriptional regulator that may modulate the expression of genes associated with cellular stress and proliferation. Objective: This study investigated the effects of nicotine exposure on the expression of the Cep72 in testicular tissue and miR-151-5p in mouse sperm. Materials and Methods: In this experimental study 16 adult BALB/C male mice (8-10 wk, 25-30 gr), were divided into two groups (n = 8/each): a control group receiving saline and an experimental group received 0.6 mg/kg nicotine intraperitoneally. Treatment lasted for 35 days. The numbers of different types of germ cells, Sertoli and Leydig cells were counted in the testis in all stages of spermatogenesis (early, mid, and late) using histological and image analyzer methods. The quantitative real-time-polymerase chain reaction method was used to assess the expression levels of Cep72 and miR-151-5p in testicular tissue and epididymal sperms, respectively. Results: Nicotine induced a significant decrease in Leydig cells (p = 0.001) without having a change in Sertoli cells. All types of germ cells were mostly affected by nicotine in different stages of spermatogenesis. A significant decrease in Cep72 gene expression was observed in the testicular tissue of the nicotine group compared to the control group (p = 0.028). A significant increase in mir-151a-5p expression was observed in the sperm of the nicotine group compared to the control group (p = 0.003). Conclusion: These findings suggest that nicotine may disrupt normal testicular germ and somatic cell development and function by modulating key regulatory pathways involving Cep72 and miR-151-5p. The roles of Cep72 and miR-151-5p in this process are particularly significant, offering potential targets for future research and therapeutic advancements. Keywords: Cep72, Nicotine, MicroRNA-151, Testis. P-98 Investigating the role of DNA repair-related factors in non-obstructive azoospermia: A bioinformatic study Mousavi SZ1, Soltani B1, Totonchi M2. Department of Molecular Genetics, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, Iran. Department of Genetics, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran. Email: totonchimehdi@gmail.com Background: Non-obstructive azoospermia (NOA) represents the most severe type of male infertility, affecting about 1% of men worldwide. Objective: This study aimed to identify differentially expressed genes (DEGs) between NOA samples and normozoospermia, as well as to investigate how DNA repair related factors influence the observed changes in gene expression. Materials and Methods: The DEGs analysis utilized data from the GSE190752 datasets found in the Gene Expression Omnibus. These DEGs were compared with a list of known human DNA repair genes sourced from the REPAIRtoire database to identify overlaps, termed REP-DEs. Pathways enrichment analysis associated with REP-DEs was performed using the ToppGene dataset. Additionally, the protein-protein interaction (PPI) network, co-expression modules, and identification of hub genes for REP-DEs were examined using the STRING database and Cytoscape software to elucidate the regulatory mechanisms at play. Results: The analysis of the GSE190752 dataset, conducted using the EdgeR package, compared the NOA groups with the control tissue group and identified 7,716 DEGs. DEGs were then cross-referenced with a list of 154 DNA repair-related genes, resulting in the identification of 45 REP-DEs. The ToppGene database facilitated the identification of enriched KEGG pathways linked to the REP-DEs, applying a p-adjusted value threshold of less than 0.01 to establish statistical significance. The pathways identified included base excision repair, nucleotide excision repair, homologous recombination, DNA replication, and mismatch repair. Following the construction of the PPI network, three co-expression clusters were identified using the MCODE and CytoHubba applications. The top 5 hub genes in the PPI network, as determined by CytoHubba, were EXO1, RAD51, BRCA1, MSH2, and RAD51C. Conclusion: This expression study highlighted the significance of DNA repair-related factors in NOA. Keywords: Infertility, Male, RNA-seq, Protein interaction maps, DNA repair. P-99 Investigating the role of L-carnitine in reducing reactive oxygen species and modulating apoptotic gene expression in mouse oocytes exposed to cyclophosphamide Almasi M1, 2, Shafiei G1, 2, Nikzad H1, 2, Karimian M3, Moshkdanian Gh1, 2. Anatomical Sciences Research Center, Institute for Basic Sciences, Kashan University of Medical Sciences, Kashan, Iran. Gametogenesis Research Center, Kashan University of Medical Sciences, Kashan, Iran. Department of Molecular and Cell Biology, Faculty of Basic Sciences, University of Mazandaran, Babolsar, Iran. Email: G_moshkdanian@yahoo.com Background: Cyclophosphamide (CP) is a commonly used chemotherapeutic drug recognized for its adverse effects on fertility in women. Conversely, L-carnitine (LC), an antioxidant, has demonstrated promising protective properties against infertility. Objective: The purpose of this study was to investigate the impact of CP and LC on reactive oxygen species (ROS) levels and the expression of apoptotic genes in female mice. Materials and Methods: In this experimental study, 24 NMRI female mice (aged 6-8 wk, weighing 30 ± 5 grams) were randomly divided into 4 groups (n = 6 /each): control group: received normal saline via intraperitoneal (IP) injection for 10 days. CP group: received a single IP injection of CP (75 mg/kg) on the 10th day of the experiment. LC group: treated with LC (200 mg/kg) via IP injection for 10 days. LC+CP group: received LC for 10 days, followed by a single CP injection (IP) on the 10th day. Following the 10-day treatment period, superovulation was induced in all groups, the oviducts were excised, and oocytes were harvested. The expression levels of apoptotic genes -Bcl2-associated X (Bax), Caspase-3, and B-cell lymphoma 2 (Bcl2)- were analyzed using real-time polymerase chain reaction. Additionally, intracellular ROS levels were assessed using dichloro-dihydro-fluorescein diacetate fluorescence staining. Results: The administration of LC in the LC+CP group resulted in a significant increase in Bcl2 gene expression (p = 0.012) while simultaneously decreasing the levels of Bax and Caspase-3 compared to the CP group (p = 0.034 and p = 0.040, respectively). Moreover, LC treatment significantly lowered ROS levels in the LC+CP group in comparison to the CP group (p < 0.001). Conclusion: The results of this study indicate that LC effectively reduces CP-induced ROS levels and influences the apoptotic pathway in mouse oocytes by decreasing the expression of Bax and Caspase-3, while enhancing Bcl2 expression. These findings highlight the potential of L-carnitine as a therapeutic agent for protecting against infertility induced by chemotherapy. Keywords: L-carnitine, Cyclophosphamide, Apoptosis, Gene expression, Reactive oxygen species. The original full text of this abstract has been published: Almasi M, Shafiei G, Nikzad H, Karimian M, Moshkdanian G. The effect of L-carnitine in reactive oxygen species reduction and apoptotic gene expression in mice after cyclophosphamide: An experimental study. Int J Reprod BioMed 2024; 22: 661. Doi: 10.18502/ijrm.v22i8.17262. P-100 Molecular mechanisms of azoospermia through reanalysis of RNA-seq results: A bioinformatic study Bakhshandeh Bavarsad S1, Nematollahi AR2, Hoseini SM3, Gholami N4, Montazeri F4. Department of Medical Genetic, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Department of Biology, Yazd University, Yazd, Iran. Biotechnology Research Center, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Abortion Research Center, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Email: marjan.montazeri@gmail.com Background: Azoospermia, the absence of sperm in semen, is a major cause of male infertility, necessitating a deeper understanding of its underlying molecular mechanisms. Objective: The goal is to identify differentially expressed genes and their associated biological pathways through advanced bioinformatics tools. Materials and Methods: In this in silico study, RNA sequencing (RNA-seq) data were processed using Cytoscape to visualize gene interaction networks and perform gene ontology (GO) enrichment analysis. This study reanalyzes RNA-seq data from 3 gene expression omnibus datasets: GSE51111, GSE45885, and GSE100019. Inclusion criteria for the datasets were studies focused on azoospermia with available RNA-seq expression data and clear differential expression of genes. Exclusion criteria included studies lacking relevant clinical data, those not published in English, and datasets with insufficient quality of sequencing data. This analysis categorized differentially expressed genes into relevant biological processes, molecular functions, and cellular components to uncover significant pathways implicated in azoospermia. Results: Our findings highlight key biological processes related to azoospermia, supported by significant evidence: nucleoplasm enrichment (GO:0005654): many differentially expressed genes localize in the nucleoplasm (p = 4.79E-21), indicating potential disruptions in nuclear function affecting sperm production (e.g., late translation, ribosomal protein L5, heterogeneous nuclear ribonucleoprotein U, parkinsonism associated protein 7). Nucleic acid binding (GO:0003676): genes involved in nucleic acid binding (p = 6.46E-21) suggest altered RNA interactions contribute to azoospermia (notable genes: ribosomal protein L30, dicer 1, Ribonuclease III). RNA Metabolism: significant enrichment in RNA metabolism pathways (p = 1.28E-20) indicates disruptions in RNA processes (key genes: ribosomal protein L9, 5'→3' exoribonuclease 1). Translation processes: translation-related genes (p = 6.81E-19) are important for sperm development (e.g., ribosomal protein 14). Peptide biosynthesis: significant involvement in peptide biosynthesis (p = 1.70E-19), indicating disrupted peptide formation (e.g., RPL5). These results show azoospermia is associated with major abnormalities in critical biological pathways. Conclusion: This RNA-seq analysis reveals important pathways in azoospermia, laying the groundwork for future research into male infertility and potential therapies. Keywords: Azoospermia, RNA-seq, Gene ontology, Nucleoplasm, Nucleic acid binding, Peptide biosynthesis. P-101 Identification of transcriptome changes in polycystic ovarian syndrom using bioinformatics analysis Moghimi-Moghadam M1, Hoseini SM2, Moshtaghioun M1, 3, Montazeri F3. Department of Biology, Yazd University, Yazd, Iran. Biotechnology Research Center, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences and Health Services, Yazd, Iran. Abortion Research Center, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Email: marjan.montazeri@gmail.com Background: MicroRNAs (miRNAs) are approximately 22-nucleotide long small RNA molecules that modulate gene expression by binding either partially or fully to their complementary sequences within mRNAs or their promoters. Objective: This study focused on the gene expression profiles of cumulus cells in patients diagnosed with polycystic ovary syndrome (PCOS), utilizing data from the gene expression omnibus (GEO) database. Materials and Methods: In this in silico study, we analyzed the standardized gene expression microarray data obtained from the GEO database, specifically using the dataset GSE277906:GPL24676 from the Illumina Novaseq6000 platform. This dataset encompasses gene expression comparisons between PCOS patients and control individuals. Data analysis was conducted using R software (version 4.4.2), employing the limma package to identify significant differential gene expressions. A strict criterion (p < 0.05) and log fold change were applied, resulting in the identification of key genes demonstrating notable differences in expression. Results: Our analysis revealed that the nicastrin (NCSTN), cytochrome oxidase assembly factor (COX19), and mitochondrially encoded NADH dehydrogenase1 (MTND1) genes exhibited decreased expression in PCOS women. In contrast, the expression of OFD1 centriole and centriolar satellite protein, phosphoenolpyruvate carboxykinase1 (PCK1), syndecan-2 (SDC2), splicing factor serine-rich5 (SRSF5), polypyrimidine tract binding protein 2 (PTBP2), voltage dependent anion channel 2 (VDAC2), and zinc finger lmprinted 3 (ZIM3) were increased. The miRNAs identified in our study target these genes and are involved in pathophysiology of PCOS. The specific miRNAs identified include miR-1-3p, miR-548n, miR-619-5p, miR-92a, miR-320, miR-let7, miR-17-5p, and miR-20a-5p. We further analyzed the Kyoto encyclopedia of genes and genomes (KEGG) pathways associated with these miRNAs, linking them to key cellular processes in PCOS, including the steroid and foxo orthologs from arthropods (FOXO) signaling pathways. Additionally, we examined protein-protein interactions among the downregulated genes, highlighting the interactions between COX19 and MTND1 with cytochrome oxidase assembly factor 6 (COA6), translocase of inner mitochondrial membrana22 (TIMM22), and cytochrome Oxidase Assembly Factor 1 (COA1). subunit (PSENEN), and rhomboid like2 (RHBDL2). Conclusion: These findings improve our understanding of the molecular mechanisms involved and offer potential for developing innovative diagnostic and therapeutic strategies for managing the disorder. Keywords: PCOS, Transcriptome, Microarray, Bioinformatics analysis, GEO database. P-102 Evaluation of the leukaemia inhibitory factor and leukaemia inhibitory factor receptor genes expression affecting endometrial receptivity in the endometrium of women with secondary infertility due to isthmocele compared to fertile group Ahani Nahayati D1, Azadegan M2, Ghoraeian P1, Aghajanpour S3, Aflatoonian R3, Hafezi M3. Department of Genetics, Faculty of Advanced Science and Technology, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran. Department of Biology, East Tehran Branch, Islamic Azad University, Tehran, Iran. Department of Endocrinology and Female Infertility, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran. Email: maryamhafezi90@yahoo.com Background: Secondary infertility is an issue affecting approximately 5% of the population and refers to women who have already had a baby in the past without any fertility treatments. Isthmocele or niche is thought to cause secondary infertility, resulting from a previous caesarean section, and may affect embryo implantation due to the stagnation of menstrual blood in the niche. Leukaemia inhibitory factor (LIF) and its receptor (LIFR) are mainly produced by the maternal endometrium at the time of implantation. It has been reported that disruption in the expression of LIF and LIFR can cause embryo implantation failure.  Objective: The purpose was to investigate the effect of isthmocele on the expression level of LIF and LIFR genes during the window of implantation. Materials and Methodes: This ethically approved case-control study at the Royan Institute, Tehran, Iran involved endometrial tissue sampling between 2023-2024, including 10 infertile women with isthmocele grade 3 (case group) and 10 fertile women (control group). Women in both study groups were < 40 yr old, with normal ovarian response and reserve. The isthmocele grade 3 group had a history of cesarean, confirmed via sonohysterography. The control group included women with at least one natural birth who visited the Royan Institute, Tehran, Iran for family planning. Endometrial biopsy during the window of implantation was done for both groups. LIF and LIFR mRNA gene expression were performed using quantitative polymerase chain reaction. Results: Using quantitative polymerase chain reaction, it was demonstrated that the expression levels of both LIF and LIFR genes were significantly higher (p ≤ 0.050) in the isthmocele group compared to the control group. Conclusion: The uterine incision during a cesarean section is generally made transversely in the lower uterine segment and could lead to the accumulation of mucus and blood in the defect. The presence of blood and mucus in the niche may cause impaired embryo implantation through the change of some crucial gene expression, the same as LIF and LIFR. Given the role of both the LIF gene and its receptor in enhancing endometrial receptivity, the findings of this study suggest that excessive overexpression of these genes may hinder embryo implantation. Keywords: Endometrium, Infertility, LIF, LIFR. P-103 Relationship between oocyte maturation and TSC1 and miR-92b-3p genes expression in cumulus cells of patients with polycystic ovary syndrome Ayatollahi SY1, Monshizadeh K2, Anbari F3, Moshtaghioun SM1, Dehghani MR3. Department of Biology, Faculty of Science, Yazd University, Yazd, Iran. Department of Medical Genetics, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Research and Clinical Center for Infertility, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Email: dehghani.dr@gmail.com; moshtaghiun@yazd.ac.ir Background: Polycystic ovary syndrome (PCOS) is a multifactorial disease caused by an endocrine disorder. One of the symptoms of PCOS is hyperandrogenism, which can disrupt follicular development. This disorder can cause problems in oocyte development and embryonic development. Cumulus cells surround the oocyte and have a reciprocal functional relationship with the oocyte. Therefore, gene expression in cumulus cells is associated with oocyte development and maturation. The PI3K/PTEN/Akt and TSC/mTOR signaling pathways play a crucial role in regulating ovarian function through the activation and survival of primordial follicles, division and differentiation of granulosa cells and meiotic maturation of oocytes. Dysregulation of these signaling pathways leads to infertility. TSC1, an essential component of the PI3K/AKT/mTOR signaling pathway, plays an important role in cell growth, proliferation, and survival processes. Studies have shown that miRNAs are present in various body fluids, including the follicular fluid of women with PCOS. The miR-92b-3p is involved in transcriptional regulation in the accumulation of primordial follicles and is a novel therapeutic target in the diagnosis and treatment of PCOS. Objective: The aim of this study was to investigate the expression levels of TSC1 and miR-92b-3p genes in cumulus cells of GV oocytes compared to cumulus cells of metaphase II oocytes in women with PCOS. Materials and Methods: In this case-control study, the case group consisted of cumulus cells from GV oocytes and the control group consisted of cumulus cells from MII oocytes, which were collected by embryologist from 25 women with PCOSwho referred to the Yazd Reproductive Sciences Institute, Yazd, Iran for infertility treatment. The inclusion criteria for the study were age 25-40 yr, infertility due to PCOS, and the presence of more than 10 oocytes in the follicular fluid after oocyte retrieval. The samples were stored in a -70°C freezer until RNA extraction. Total RNA was extracted from cumulus cells and cDNA was synthesized. The cDNA was used as a template for real-time polymerase chain reaction. To evaluate changes in TSC1 and miR-92b-3p genes expression, the relative quantification method (ΔCt) was compared between the groups. Results: According to our studies, the relative expression of TSC1 gene in cumulus cells of GV oocytes was significantly increased compared to cumulus cells of MII oocytes in patients with PCOS (p = 0.0007). Subsequently, the relative expression of miR-92b-3p in cumulus cells of GV oocytes was significantly decreased compared to cumulus cells of MII oocytes in patients with PCOS (p = 0.0141). Conclusion: Cumulus cell gene expression analysis offers a non-invasive method to study oocyte status. This study suggests that TSC1 and miR-92b-3p may play a role in oocyte quality in women with PCOS. Larger cohorts are recommended for confirmation and further information. Further studies on the expression of other genes that may play a role in oocyte quality are also recommended. Keywords: Oocyte maturation, Cumulus cells, Polycystic ovary syndrome, TSC1, miR-92b-3p. P-104 Investigating the effect of altered miR-185-5P expression on ovarian response in women with diminished ovarian reserve: A case-control study Karami N1, Yazdanian A1, Lotfi M2, Montazeri F3, Sheikhha MH3. Department of Genetics, Faculty of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Department of Molecular Medicine, Faculty of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Abortion Research Center, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Email: F.montazeri@ssu.ac.ir Background: Diminished ovarian reserve (DOR) is defined as a condition that affects fertility by reducing the reproductive potential of the ovary. The factor that can negatively affect the quality and quantity of oocytes in the ovary is the alteration of the expression profile of cumulus cells (CCs). Based on the research, circulating miRNAs play an important role in ovarian function and can potentially serve as important biomarkers for predicting ovarian function. Objective: To investigate the expression of miR-185-5P in serum and CCs in order to find a diagnostic biomarker for DOR patients. Materials and Methods: In this case-control study, the participants included 20 women with DOR and 20 women with a normal ovarian reserve between 20-34 yr of age referred to Yazd Reproductive Sciences Institute, Yazd, Iran. Serum and CC were collected and real-time polymerase chain reaction was performed to examine the expression level of miR-185-5P. Results: Our results showed that the increased expression of miR-158-5P was significantly higher in both serum and CCs of women with DOR compared to the control group (p = 0.0019 and p = 0.0008, respectively). Conclusion: The present study shows that examining this miRNA can be a promising diagnostic biomarker for predicting ovarian reserve and its response to stimulation protocols.   Keywords: miR-158-5P, Diminished ovarian reserve, Ovarian response, Cumulus cells. P-105 Myo-inositol improves spermatogenesis in diabetic rats by reducing inflammation and oxidative stress through the Bax/Bcl2/Nrf2 pathway Kiani M, Soleimani Mehranjani M, Shariatzadeh SMA. Department of Biology, Faculty of Science, Arak University, Arak, Iran. Email: minakiani335@gmail.com Background: Type 2 diabetes mellitus causes impaired spermatogenesis by increasing inflammation and apoptosis and decreasing testosterone synthesis in testicular tissue. Myo-inositol is a six-carbon sugar alcohol and a natural antioxidant. The concentration of free myo-inositol in the testes is 30-40 times higher than its concentration in the blood. Given that myo-inositol synthesis is reduced by 50% in the testes of diabetic individuals and is also excreted in the urine. Objective: The present study aim to investigate the effect of myo-inositol on spermatogenesis in diabetic rats by evaluating inflammatory factors, oxidative stress, expression of apoptosis-regulating genes, and terminal deoxynucleotidyl transferase dUTP nick end labeling test. Materials and Methods: Eighteen adult male Wistar rats were divided into 3 groups: control, diabetic (streptozotocin [65 mg/kg] + nicotinamide [110 mg/kg]) and diabetic + myo-inositol (300 mg/kg). The treatment period with myo-inositol was 56 days (by gavage). After the treatment period and dissection of the rats, each pair of testes was removed for histological, molecular, and biochemical examination. Testicular supernatant was used to evaluate the expression of Bax, Bcl2, and Nrf2 genes (using real-time polymerase chain reaction), inflammatory factors and testosterone levels (using enzyme-linked immunosorbent assay kits), and oxidative stress factors including superoxide dismutase (SOD), total antioxidant capacity (TAC), and malondialdehyde (MDA) (using spectrophotometer). Also, tissue sections prepared from the testis were used for histopathological examination of the testis (counting the number of spermatogenic, Leydig, and Sertoli cells) using the stereological method as well as the terminal deoxynucleotidyl transferase dUTP nick end labeling test. Results: In the diabetic group, there was a notable elevation in the average levels of IL-6, TNF-α, Bax, and MDA (p ≤ 0.001 for all). Additionally, the number of apoptotic cells increased significantly (p ≤ 0.001), while the mean concentrations of TAC, SOD, Nrf2, Bcl2, testicular testosterone (p ≤ 0.001 for all), as well as the numbers of spermatogonia, spermatocytes, spermatids, Sertoli cells, and Leydig cells all decreased markedly (p = 0.000 for each comparison), when compared to the control group. Conversely, in the diabetic + myo-inositol group, there was a significant reduction in the levels of IL-6 (p = 0.021), TNF-α (p ≤ 0.001), Bax (p = 0.019), MDA (p ≤ 0.001), and the number of apoptotic cells (p ≤ 0.001). At the same time, this group showed a substantial rise in antioxidant levels such as TAC (p = 0.024), SOD (p = 0.013), Nrf2 (p ≤ 0.001), and Bcl2 (p = 0.044), along with increased testicular testosterone and a higher count of spermatogonia, spermatocytes, spermatids, Sertoli cells, and Leydig cells (p ≤ 0.001 for all), compared to the diabetic group. Conclusion: The results of our study showed that myo-inositol supplementation reduces apoptosis in the testis by reducing oxidative stress and inflammation caused by type 2 diabetes, leading to an increase in the number of spermatogenic and somatic testicular cells and reducing the destructive effects of type 2 diabetes on the process of spermatogenesis. Keywords: Type 2 diabetes, Spermatogenesis, Myo-inositol, Apoptosis, Inflammation. P-106 Upregulation of Long non-coding RNA-SRLR and Iinterleukin-1β in women with polycystic ovary syndrome Zamani-Badi T1, Seyed Hosseini E1, Nikzad H2. Gametogenesis Research Center, Kashan University of Medical Sciences, Kashan, Iran. Anatomical Sciences Research Center, Institute for Basic Sciences, Kashan University of Medical Sciences, Kashan, Iran. Email: nikzad_h@kaums.ac.ir Background: Polycystic ovary syndrome (PCOS) affects 70% of women with ovulation difficulties. The pathogenesis is not fully understood and is largely thought to involve a complex and unknown interaction between environmental and genetic factors. The correct diagnosis of PCOS is still difficult despite the Rotterdam criteria. Oocyte maturation depends on the interaction between it and follicular cells, including cumulus and granulosa cells. Studying granulosa cell proliferation, differentiation, and transformation is crucial for understanding folliculogenesis. Differences in long non-coding RNAs (lncRNAs) and pro-inflammatory cytokines such as Iinterleukin-1β (IL-1β) expression are linked to gynecological disorders. Objective: This study aimed to investigate the expression of LncRNA-SRLR and the IL-1β genes in women with PCOS compared to non-PCOS women. Materials and Methods: In this case-control study, samples of granulosa cells isolated from the surrounding oocytes of 28 PCOS and 18 non-PCOS women who referred to the IVF center of Beheshti hospital, Kashan, Iran between 2022-2023, were studied. These women had visited the infertility center for in vitro fertilization or Intra-cytoplasmic sperm injection on the day of oocyte retrieval. Following RNA extraction and c-DNA synthesis, the expression levels of the SRLR and IL-1β genes in the granulosa cells were assessed using quantitative polymerase chain reaction. Results: The expression levels of SRLR (p ≤ 0.001) and IL-1β (p = 0.038) genes were significantly higher in the granulosa cells of women with PCOS compared to non-PCOS women. Conclusion: Elevated expression of the LncRNA-SRLR and IL-1β genes in granulosa cells leads to the pathophysiological processes of PCOS and increased inflammation. Keywords: Long non-coding RNA, PCOS, Granulosa cell, Interleukin-1beta. P-107 Fluoxetine reduces the quality of vital parameters of normal human sperm by affecting the expression of genes related to apoptosis: A laboratory study Roostaee Z1, Soleimani Mehranjani M1, Cheraghi E2, Shariatzadeh SMA2. Department of Biology, Faculty of Science, Arak University, Arak, Iran. Department of Biology, Faculty of Sciences, University of Qom, Qom, Iran. Email: Roostaeez143@gmail.com Background: Depression, a prevalent mental health condition, impacts countless individuals annually. Fluoxetine, a widely used antidepressant, is valued for its safety and effectiveness. As a selective serotonin reuptake inhibitor, fluoxetine enhances serotonin levels in the brain. However, research suggests that fluoxetine may have detrimental effects on certain cell types, including ovarian epithelial and hippocampal cells, by potentially increasing oxidative stress and contributing to reduced cell survival.   Objective: Since many men of reproductive age use fluoxetine to treat their depression, it is essential to investigate its effect on sperm quality. The aim of this study was to evaluate the effect of fluoxetine on motility, viability, DNA fragmentation, and expression of genes related to apoptosis of human sperm in vitro.  Materials and Methods: The type of this study was experimental. Semen samples were collected from 30 fertile men and divided into 2 groups including: control (no treatment, 1-hr incubation), and fluoxetine-treated (5 μM fluoxetine, 1-hr incubation). The study evaluated sperm motility (total, progressive, and non-progressive), viability, reactive oxygen species (ROS) levels, and the expression of apoptosis-related genes (BAX, BCL2 and CASPASE3). Data were analyzed using repeated measures analysis. Results: In the fluoxetine group, the mean percentage of total motility, progressive motility, viability, and expression level of the antiapoptotic gene BCL2 showed a significant decrease compared to the control group (p ˂ 0.001), while the mean percentage of non-progressive motility, DNA fragmentation, ROS level, and expression levels of the apoptotic genes BAX and CASPASE3 showed a significant increase in the fluoxetine group compared to the control group (p ˂ 0.001). Conclusion: Our results indicate that fluoxetine negatively impacts human sperm quality in vitro by reducing motility, viability, and anti-apoptotic gene expression, while increasing DNA fragmentation, ROS levels, and apoptotic gene expression. These findings suggest oxidative stress and apoptosis as key mechanisms of damage, raising concerns about its potential effects on male reproductive health. Keywords: Fluoxetine, Sperm, Apoptotic genes. P-108 Artificial intelligence in preventing reproductive failure and genetic insights Bakhshandeh Bavarsad S1, Karami N1, Asadollahi S1, Ghasemi N1, 2. Department of Medical Genetics, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Abortion Research Centre, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Email: nghasemi479@gmail.com Artificial intelligence (AI) is transforming reproductive medicine by enhancing the analysis of genetic factors associated with infertility. AI tools facilitate accurate diagnoses and personalized strategies by identifying causal genetic variants through advanced genomic and epigenomic analysis. This study highlights AI's transformative role in reproductive medicine, emphasizing genetic insights. The goal of this study was to evaluate the transformative role of AI in reproductive medicine by examining how AI tools enhance the analysis of genetic factors associated with infertility, thereby facilitating accurate diagnoses and personalized treatment strategies. A comprehensive literature review was conducted between 2018-2024 using databases such as PubMed, Nature, and MDPI with the keywords "Artificial Intelligence", "infertility", "genetic variants", "personalized treatment", "IVF", and "machine learning". Genomic analysis tools including Emedgene, AI-MARRVEL, DNAnexus, Rosetta, Bionano’s VIA, DeepMetabolism, Basepair, insitro, Tinybio and PetaGene were evaluated for their roles in medical and reproductive genetics. Additionally, AI-based embryo selection systems such as IVF Australia’s technology and the STORK framework were assessed for their effectiveness in improving reproductive outcomes. AI-powered genomic analysis tools have significantly advanced the diagnosis and management of infertility by improving the accuracy and efficiency of genetic variant interpretation. For example, Emedgene automates variant classification using machine learning algorithms like Random Forest and Support Vector Machines, reportedly achieving an accuracy of up to 95% in identifying disease-causing mutations compared to traditional methods. AI-MARRVEL prioritizes candidate gene variants by integrating clinical and genomic data with a scoring system based on Bayesian networks, enhancing the identification of causative mutations. Platforms like DNAnexus facilitate comprehensive genomic data management, enabling seamless integration of multi-omics data for better clinical insights; DNAnexus uses various algorithms for data processing and integration but the accuracy varies depending on the specific application. Rosetta aids in understanding protein structural impacts of mutations, crucial for interpreting variant pathogenicity; Rosetta employs computational modeling and energy function optimization to predict protein structures, but accuracy depends on protein complexity. Bionano’s VIA integrates diverse genomic data to detect structural variants often missed by conventional methods using proprietary algorithms to increase accuracy. DeepMetabolism predicts phenotypic consequences of genetic changes, informing personalized treatment strategies through machine learning models trained on large-scale metabolomic data. Tools such as Basepair streamline next-generation sequencing analysis, accelerating the discovery of infertility-associated markers. Insitro leverages machine learning for drug discovery targeting genetic causes of reproductive disorders. Tinybio explores the microbiome’s influence on reproductive health through metagenomic analysis. Lastly, PetaGene ensures secure and efficient genomic data storage and access, facilitating large-scale genetic studies. Collectively, these AI-driven platforms contribute to more precise genetic diagnoses, improved embryo selection, and personalized therapeutic approaches, ultimately enhancing reproductive outcomes. AI integration in reproductive medicine improves diagnostic accuracy and treatment efficacy. From tools like DeepVariant to platforms like DNAnexus, AI is reshaping infertility research and treatment. Address ethical considerations, particularly data privacy and informed consent. Keywords: Artificial intelligence, Reproductive genetics, Infertility, Genomic analysis. P-109 The prevalence of human papillomavirus genotypes among women referred to the Yazd Reproductive Sciences Institute, Yazd, Iran from 2022-2024 Rahavi H, Sabbagh-Nejad S, Sahami-Fard MH, Nikkhah H, Esmaeili Dahaj F, Darvishali MH, Farashahi Yazd E. Stem Cell Biology Research Center, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Email: ehsanfarashahi@gmail.com Background: Human papillomavirus (HPV) causes most genital warts and anogenital cancers, including cervical cancer in women. HPV primarily spreads sexually and damages epithelial cells. Over 200 genotypes have been found to date. These genotypes are classified into high-risk and low-risk due to their carcinogenic potential. HPV-6 and HPV-11 are linked to benign conditions like genital warts and low-grade cellular changes with limited tumorigenic potential, while HPV-16, 18, 31, 33, 35, 39, 45, 51, 52, 56, 58, 59, and 68 strongly link to cancer development. Cervical cancer is the second leading cause of cancer deaths in women due to recurrent HPV-16 and HPV-18 infections. Molecular HPV genotype detection complements Pap smears, colposcopy, and biopsy for precise diagnosis and treatment. Objective: This cross-sectional study aimed to investigate the prevalence of HPV genotypes of 300 women referred by gynecologists to the molecular diagnostics for reproductive infectious disorders at the Yazd Reproductive Sciences Institute, Yazd, Iran between 2022 and 2024. Materials and Methods: The Pap smear samples were collected from the anogenital regions of women during the study period (2022-2024). HPV DNA was extracted, and genotyping was performed using a real-time polymerase chain reaction assay. To assess the relationship between HPV infection and age, participants were categorized into 5 age groups (≤ 20, 20-30, 30-40, 40-50, and ≥ 50 yr). Results: A total of 16 HPV genotypes, including both high-risk and low-risk variants, were identified. Among the 300 participants, 23.33% were infected with at least one HPV genotype. The most prevalent genotypes included high-risk HPV-16 (5.66%), HPV-51, 56, and 66 (3.66%), and HPV-31, 35, 39, and 68 (3.33%). Low-risk genotypes HPV-6 and HPV-11 were detected in 5.33% of cases. Co-infections involving ≥ 2 genotypes were observed in 4% of participants, with the most frequent co-infection involving HPV-16 and HPV-6/11 (33.3%). The highest prevalence of HPV infection was observed in women aged 30-40 yr (48.57%), peaking between 36 and 40 yr. However, no statistically significant correlation was found between age and HPV infection (p = 0.45). Conclusion: The reported prevalence of HPV genotypes in this study was relatively high compared to global statistics, likely due to the referral of most participants by gynecologists rather than through routine screening programs. Given that cervical cancer is predominantly caused by persistent infections with high-risk HPV genotypes, implementing comprehensive screening strategies, particularly those focusing on early detection of high-risk genotypes, is crucial for the prevention and targeted treatment of gynecological cancers. This study also provides valuable epidemiological insights into HPV genotype distribution, which could inform future vaccination policies and public health strategies. Keywords: Human papillomavirus Cervical cancer, Genotyping, Prevalence, Yazd. P-110 Obesity alters ovarian insulin-like growth factor-1 expression in rats Mohammadghasemi F1, Shams F1, Aghajani-Nasab M2, Habibi pour Fatideh R2. Cellular and Molecular Research Center, Department of Anatomical Sciences, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran. Cellular and Molecular Research Center, Department of Biochemistry and Biophysics, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran. Email: maghajany@gmail.com Background: Ovarian insulin-like growth factor 1 (IGF-1) plays a critical role in reproductive health and metabolic regulation. It influences follicular development, steroidogenesis, and overall ovarian function. In obese individuals, the dysregulation of IGF-1 signaling in the ovaries can have profound implications for fertility and metabolic homeostasis. Objective: The aim of this study is the evaluation of the expression of IGF-1 in the ovary in obese rats induced by high- fat diet (HFD). Materials and Methods: For 16 wk, 6 wk-old Wistar rats had the option to receive either a standard diet (10% fat, n = 12) or a high fat diet (HFD; 60% fat, n = 12) as their diet. Biochemical and molecular tests were utilized to evaluate ovary function and expression of IGF-1, including enzyme-linked immunosorbent assay and quantitative polymerase chain reaction. Results: Rats fed an HFD showed a significant increase (p < 0.050) in lee index, insulin resistance, liver enzymes, glucose, and triglycerides compared with those on an standard diet. Furthermore, rats on an HFD showed alterations in folliculogenesis (p < 0.050) and an increase in expression of ovarian IGF-1 (p < 0.050). Conclusion: Obesity disturbs local IGF-1 signaling in ovary tissue and may affect follicles development. Keywords: Obesity, Ovary, IGF-1, Folliculogenesis. P-111 The effect of exenatide, on adiponectin system expression in polycystic ovary syndrome Vatankhah A1, Rezvani ME1, Izadi M2. Department of Physiology, School of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Research and Clinical Center for Infertility, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Email: Mizadi890112@gmail.com Background: Polycystic ovary syndrome (PCOS) is a common multifaceted and intricate endocrine disorder that affects 5-10% of women of reproductive age. Serum levels of adiponectin, which is a peptide hormone, released from fat cells that control insulin sensitivity, lipid metabolism, and glucose levels through its anti-fibrotic and antioxidant properties, are low in PCOS women. Objective: This study aimed to investigate the effects of exenatide on mRNA expression levels of the adiponectin system in PCOS rats. Materials and Methods: In our cross-sectional study, 28 normal cyclicity female Wistar rats weighing 175-200 gr were divided into 4 groups (n = 7/each). No medication was given to the normal group. After receiving estradiol valerate to develop PCOS, the PCOS + vehicle group was divided into PCOS + E50 and PCOS + E100 groups, and they were given doses of exenatide of 50 or 100 μg/kg, respectively. The mRNA expression of adiponectin and adiponectin receptor 1 (Adipo-R1) was evaluated using a semi-quantitative real-time polymerase chain reaction. Results: Our study showed that the level of mRNA Adipo-R1was increased in the PCOS group compared to the normal group (p < 0.05). Both doses of 50 and 100 μg/kg exenatide can decrease the Adipo-R1. Conclusion: Our findings suggested that exenatide may improve rats with PCOS by regulating the molecules of adiponectin and its receptor. Keywords: Polycystic ovary syndrome, Exenatide, Adiponectin. P-112 Annexin A5/M2 haplotype in couples who suffer from recurrent implantation failure Rahimi MM1, Kargar R2, Farrahi F3, Zamanian MR4, Mostafaei P5, Aghajanpour S5, Amirchaghmaghi E5, Sabbaghian M3. Department of Developmental Biology, Faculty of New Biological Science and Technologies, University of Science and Culture, ACECR, Tehran, Iran. Department of Biochemistry, Faculty of New Biological Science and Technologies, University of Science and Culture, ACECR, Tehran, Iran. Department of Andrology, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran. Department of Genetics, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran. Department of Endocrinology and Female Infertility, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran. Email: marjan.sabbaghian@gmail.com Background: Recurrent implantation failure (RIF) is defined as ≥ 3 failed fresh or frozen embryo transfer (ET) cycles with at least four optimal quality embryos in women < 40 yr old. Although several causes such as uterine abnormalities, parental genetic disorders and endometrial factors may lead to this condition, many RIF cases remain unexplained. Thrombophilias is considered one of the potential causes of RIF. Annexin A5 (ANXA5) has a potent anticoagulant effect which is expressed on placenta and syncytiotrophoblast cells. The M2 haplotype which are 4 single nucleotide polymorphisms that are inherited together from the parents can decrease the expression of ANXA5 and lead to placental complication. Several studies have shown that variation in the promoter of ANXA5 represents a risk factor for recurrent pregnancy loss but the relation of this genetic variation with RIF has not been studied in Iranian population. Objective: This study purpose is to determine the potential role of the M2/ANXA5 haplotype as a risk factor for unexplained RIF in Iranian population. Materials and Methods: In this ongoing case-control study, 20 infertile couples with history of three or more failed ET cycles without known cause (unexplained RIF group) and 12 couples who had previously natural live births and referred to Royan Institute, Tehran, Iran for sex selection of next child (control group) were enrolled between 2024-2025. In both groups, women’s and men’s age was < 40 and < 45 yr old, respectively. All couple in RIF group were screened for uterine anatomical anomalies, female hereditary thrombophilia, parental genetic disorders and female endocrine dysfunction. In case of the presence of any mentioned factors, the RIF couple were not included. After taking written informed consent, blood samples were drawn from studied couples (females and males), then DNA was extracted by using the salting out method. The primer of ANXA5 core promotor was designed using primer 2 and BLAST. After polymerase chain reaction on the extracted DNA, each sample was used for Sanger sequencing. Results: Till now, 20 unexplained RIF and twelve fertile couples (control) were enrolled. The mean age of men was 40.16 yr old and average age of women were 35.31 yr old. Mean number of previous failed ET was 4.12 cycle in unexplained RIF group. M2/ANXA5 haplotype was observed only in 2 men of RIF group while no man in control group had this haplotype. This difference between groups was not significant (p = 1.93). None of women in both groups had this haplotype. Conclusion: According to this preliminary data, the M2/ANXA5 haplotype was only found in male partner of unexplained RIF couples. ANXA5 expression is required for the fetal compartment at the feto-maternal interface to facilitate anticoagulation and haplotype M2 of this factor could reduce its expression levels. For a definite conclusion, the completion of the sample size is needed. Keywords: Infertility, Haplotypes, Annexin A5, IVF failure. P-113 Protective effect of hesperidin on malathion-induced ovarian toxicity in mice: The role of miRNAs, inflammation, and apoptosis Talebi SF1, Kooshki AR2, Zarein M3, Seify M4, Dolatshahi B5, Shoorei H6, 7, 8, Kumar Bhandari R9. Department of Pharmacology, Birjand University of Medical Sciences, Birjand, Iran. Student Research Committee, Birjand University of Medical Sciences, Birjand, Iran. Department of Anatomical Sciences, Faculty of Medicine, Birjand University of Medical Sciences, Birjand, Iran. Research and Clinical Center for Infertility, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Department of Biology, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz, Iran. Cellular and Molecular Research Center, Birjand University of Medical Sciences, Birjand, Iran. Clinical Research Development Unit of Tabriz Valiasr Hospital, Tabriz University of Medical Sciences, Tabriz, Iran. Rooyesh Infertility Center, Birjand University of Medical Sciences, Birjand, Iran. Division of Biological Sciences, University of Missouri, Columbia, MO, USA. Email: Mahnazzarein93@gmail.com; h.shoorei@gmail.com; bhandarir@missouri.edu Background: Malathion, a widely used organophosphate pesticide, is known for its relatively low toxicity and broad application. However, it has been identified as a female reproductive toxicant, exerting its harmful effects through mechanisms such as oxidative stress, apoptosis, autophagy, and hormonal imbalances. Hesperidin, a flavonoid belonging to the flavanone subclass, possesses multiple biological activities, including antioxidant and anti-inflammatory properties, which may mitigate these toxic effects. Objective: The objective of this study was to evaluate the impact of hesperidin and malathion on the expression of microRNAs (miRNAs) and genes involved in apoptosis and inflammation. Materials ans Methods: In tis experimental study, 40 female BALB/c mice (n = 40) were randomly assigned into 4 groups: hesperidin (20 mg/kg), malathion (3 mg/kg), hesperidin + malathion, and control. Following 35 days of intraperitoneal treatment, the mice were euthanized. The left ovaries were used for the analysis of miRNA-146a-5p, miRNA-129-3p, miRNA-96-5p, nuclear factor kappa B (NF-κB), B-cell lymphoma 2-associated X protein (Bax), and B-cell lymphoma 2 (Bcl-2) gene expression via real-time quantitative polymerase chain reaction. In addition, levels of cytokines including interferon gamma (IFN-γ), interleukin (IL)-2, IL-6, IL-4, and IL-10 were quantified using enzyme-linked immunosorbent assay. The right ovaries were examined histologically and immunohistochemically using hematoxylin and eosin staining and NF-κB immunostaining. Results: Malathion exposure significantly increased the Bax/Bcl-2 ratio, upregulated Bax and NF-κB expression, and elevated levels of IFN-γ, IL-2, and IL-6. It also enhanced miRNA-146a-5p expression, while reducing miRNA-129-3p and miRNA-96-5p levels, as well as IL-4 and IL-10. Histological analysis revealed that malathion induced ovarian structural abnormalities and disrupted follicular architecture, accompanied by increased NF-κB immunoreactivity. Conversely, hesperidin treatment demonstrated a protective role by alleviating or reversing these molecular and structural alterations. Conclusion: In conclusion, hesperidin ameliorates malathion-induced ovarian toxicity by modulating cytokine production, apoptotic signaling, inflammatory responses, and miRNA expression. Keywords: Ovary, Malathion, Hesperidin, Apoptosis, Inflammation, miRNAs. The original full text of this abstract has been published: Talebi SF, Kooshki AR, Zarein M, Seify M, Dolatshahi B, Shoorei B, et al. Protective effect of hesperidin on malathion-induced ovarian toxicity in mice: The role of miRNAs, inflammation, and apoptosis. Toxicol Rep 2024; 12: 469-476. Doi: 10.1016/j.toxrep.2024.04.003. P-114 Possible regulatory role of circulating miRNA-708 in endometriosis Hasheminasab H1, Safaralizadeh R1, Moshtaghioun SM2, Montazeri F3. Department of Animal Biology, Faculty of Natural Science, University of Tabriz, Tabriz, Iran. Department of Biology, Yazd University, Yazd, Iran. Abortion Research Center, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Email: f_montazeri@outlook.com Background: Endometriosis is a chronic, estrogen-dependent condition that affects women of reproductive age. It is characterized by the presence of endometrial-like tissue outside the uterine cavity. A key challenge in managing endometriosis is the absence of a reliable noninvasive diagnostic test, often resulting in delayed diagnosis and treatment. Implementing noninvasive diagnostic techniques could facilitate early identification and intervention, potentially enhancing the quality of life for affected women and mitigating related healthcare costs. Despite the high prevalence of endometriosis, the underlying factors and mechanisms that drive the formation and persistence of ectopic lesions remain poorly understood. Therefore, alongside conventional treatment strategies, it is crucial to explore the genetic determinants of the disease, particularly the alterations in microRNA (miRNA) expression, which may elucidate its etiology and inform therapeutic approaches. Objective: Comparing the miRNAs expression among women with endometriosis relative to the control group. Materials and Methods: This case-control study involved collecting plasma samples from 20 women with endometriosis who underwent laparoscopic surgery at Research and Clinical Center for Infertility, Yeazd, Iran in 2022, alongside 20 women without endometriosis. Total RNA was extracted from plasma samples using trizol, followed by complementary DNA (cDNA) synthesis. The synthesized cDNA served as a template for real-time polymerase chain reaction analysis. The 2^-ΔCt method was employed to assess the expression level changes of miR-708. Results: Comparative analysis of miR-708 expression levels in plasma revealed a significant decrease in both miRNAs among women with endometriosis relative to the control group. The ability of miR-708 to accurately identify women with endometriosis was measured using ROC curves and the area under the curve. The area under the curve value for miR-708 was 0.68 (p = 0.048) for plasma samples when compared to the plasma of the control group. Conclusion: The significant differences in the expression of these candidate miRs between the plasma of endometriosis participants and healthy individuals suggest their potential involvement in the etiology of endometriosis. Consequently, miR-708 may serve as prospective diagnostic biomarkers and could play a role in prognosis and treatment management.   Keywords: Endometriosis, Circulating miRNA, miR-708, Plasma. P-115 Investigation of the SPATA6 gene expression in men with terato-asthenozoospermia Saberiyan MR1, Mehri-Ghahfarokhi A2. Department of Medical Genetics, School of Medical Sciences, Hormozgan University of Medical Sciences, Bandar Abbas, Iran. Clinical Research Developmental Unit, Hajar Hospital, Shahrekord University of Medical Sciences, Shahrekord, Iran. Email: Ameneh.mehri.96@gmail.com Background: Infertility has emerged as a significant issue in contemporary society, with its prevalence on the rise globally. A proportion of men suffer from a condition referred to as idiopathic male infertility, which is marked by an ambiguous cause of the disorder. The spermatogenesis-associated protein (SPATA) gene family is responsible for encoding proteins that are crucial for the processes of spermatogenesis and fertilization. Within this family, the SPATA6 gene is notably conserved throughout evolution and exhibits expression that is restricted to testicular tissue. Objective: In the present study, aimed to examine the expression level of the SPATA6 in individuals with terato-asthenozoospermia (TAZ) and Normozoosperima (NZ) as a control group. Materials and Methods: This research, conducted in collaboration with the Shahrekord Infertility Treatment Center and the Clinical Research Development Unit of Hajar hospital at Shahrekord University of Medical Sciences, Shahrekord, Iran from July 2023 until Jan 2024, involves a study sample comprising individuals diagnosed with TAZ (n = 30) alongside a control group of NZ with normal seminal fluid parameters (n = 30). Seminal fluid samples are collected from the participants under standardized conditions. The expression level of the gene was evaluated by real-time polymerase chain reaction. Results: The findings of this study indicated that the expression level of SPATA6 was significantly (p < 0.0001) lower in the TAZ group than in the control group. There were also significant (p < 0.0001) positive associations between the expressions of SPATA6 with sperm motility and morphology. Conclusion: Overall, the results of this study suggested the role of the SPAT6A gene in sperm motility and morphology. Keywords: Male infertility, SPATA6, Asthenozoospermia, Gene expression. P-116 Integration of artificial intelligence and genomic editing: A novel revolution in infertility diagnosis and treatment Khalili MA, Lotfalian A. Research and Clinical Center for Infertility, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Email: lotfalianelham@gmail.com Background: Artificial intelligence and genomic editing technologies, particularly clustered regularly interspaced short palindromic repeats-associated protein 9 (CRISPR-Cas9), are aiding in reducing infertility, a genetic disorder affecting millions globally. Researchers are developing new treatment strategies and addressing societal responsibilities and ethical issues. Materials and Methods: This 2024 systematic review examined English-language peer-reviewed articles from 2023-2024 on infertility, genomic editing, personalized treatment, AI, CRISPR-Cas9, and ethical considerations. Searches in Web of Science, PubMed, Medline, Embase, and Google Scholar identified 67 articles. After screening titles (40 articles), abstracts (15 articles), and full texts (7 excluded), 8 articles were selected for final analysis. Results: The use of (AI) in infertility diagnostics allows for accurate diagnosis and prognostication in cases of infertility due to its remarkable ability to evaluatebig and complicated datasets. For example, machine learning algorithms determine the best intervention tactics and forecast the success rates of assisted reproductive technologies, such as in vitro fertilization. Additionally, AI-powered solutions produce thorough fertility profiles, pinpoint risk factors, and offer practical suggestions for changing one's lifestyle, enabling prompt and efficient interventions. CRISPR and genomic editing: CRISPR-Cas9 provides unmatched accuracy in modifying infertility-related genomic sequences. This method has demonstrated promise in correcting mutations associated with ovarian insufficiency and azoospermia. By anticipating off-target effects, improving editing techniques, and customizing genomic interventions, the incorporation of AI increases the effectiveness of CRISPR. Previously untreatable cases of infertility can now be resolved because of these developments. Moral points to remember: there are serious ethical issues with the use of AI and CRISPR in infertility treatment. To guarantee fair access and lessen inequities in healthcare, concerns including patient autonomy, informed consent, and data security must be addressed. Creating strong ethical frameworks is essential to strike a balance between societal responsibility and innovation. Therapeutic synergies: AI and CRISPR together have demonstrated revolutionary potential in the treatment of infertility. CRISPR-based therapies are made more accurate and safer by AI-driven insights. The care of complicated infertility cases is being revolutionized by this synergistic approach, which makes it easier to generate customized genetic therapies.  Conclusion: AI and CRISPR are revolutionizing infertility treatment by improving diagnosis and treatment effectiveness. AI enhances CRISPR editing capabilities by analyzing large datasets. However, adoption faces challenges like high costs, accessibility, and ethics concerns. Future studies aim to enhance these technologies and explore their long-term effects.  Keywords: Artificial intelligence, CRISPR-Cas9, Infertility, Genomic editing, Personalized treatment, Ethical considerations. P-117 Differential expression in female with endometriosis through single-cell RNA sequencing Dehghani A1, Bakhshandeh Bavarsad S1, Ghasemi N1, 2. Department of Medical Genetics, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Abortion Research Centre, Yazd Reproductive Sicences Institue, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Email: nghasemi479@gmail.com Background: Endometriosis is a chronic and often debilitating gynecological condition characterized by the presence of endometrial-like tissue outside the uterine cavity. Affecting an estimated 10-15% of women of reproductive age, this disorder presents significant clinical challenges, including chronic pelvic pain and infertility, thereby adversely impacting quality of life. There is a challenge among scientists regarding whether endometriosis affects oocyte quality, implantation, and pregnancy outcomes. Understanding these relationships is crucial for developing effective treatment strategies for individuals affected by endometriosis. The target of this study is to investigate the impact of endometriosis on oocyte quality by analyzing the differential gene expression in oocytes from women with endometriosis compared to healthy individuals. Objective: The study aims to identify key genes, such as HOPX, RHOB, RRAD, and GADD45G, that are differentially expressed and may play critical roles in oocyte quality and the reproductive pathophysiology associated with endometriosis. Ultimately, this research seeks to elucidate the mechanisms by which these genes influence oocyte biology and to explore their potential as biomarkers or therapeutic targets for improving fertility treatment outcomes in women with endometriosis. Materials and Methods: In this case-control study row data excluded from GEO datasets of NCBI. 4 samples are the RNA-sequencing of oocyte from endometriosis individuals and four sample is the RNA-seq of oocyte from healthy individuals. The quality of data assessed by FASTQC in GALEXY. Then data mapped to the genome by HISAT2. After assessing the quality of annealing gene expression assessed by DEseq2 twenty top genes with p < 0.05 and adjusted p > 1 was selected and differential gene expression of samples was compared by heatmap. Our scRNA-seq revealed an effect of endometriosis on global transcriptome behavior in oocyte from endometriosis ovaries. Results: In this study, MA plot, histogram of p-value, dispersion estimates of normalized counts, PC variance and sample to sample distance thoroughly examined by DEseq2 and all exhibited an acceptable level of quality. The highest number of differentially expressed genes was found when oocyte from women with OE were compared to oocyte from healthy donors. In this study the gene HOPX, RHOB, RRAD and GADD45G is so expressed in oocyte from endometriosis individual compared to oocyte from healthy donors. Conclusion: The altered expression of genes like HOPX, RRAD, RHOB, and GADD25G in oocytes from individuals with endometriosis points to their importance in oocyte quality and endometriosis-related reproductive issues. These genes affect key processes like stress response and metabolism, and their disruption can impair oocyte function, contributing to infertility. Further research is needed to fully understand how these genes impact oocyte biology and whether they could serve as targets for future treatments. Keywords: Endometriosis, Oocyte, Single cell RNA-seqencing, Bioinformatic, Infertility. P-118 Effect of platelet-rich plasma therapy on the expression of TRAF-1 and COX-2 in the endometrium Lotfi M1, Shahcheraghi SH2. Abortion Research Center, Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Reproductive Immunology Research Center, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Email: shahcheraghih@gmail.com Background: Platelet-rich plasma (PRP) is plasma from whole blood that has a high concentration of platelets, which includes various growth factors that can promote tissue healing through stimulating cell growth, forming new blood vessels, and reducing inflammation. The TNF receptor-associated factor (TRAF) family consists of cytoplasmic proteins that can negatively regulate apoptosis and also induce genes that enhance cell survival. TRAF proteins might function to regulate the ability of receptors to activate different signaling pathways, resulting in the phosphorylation and activation of protein kinases, which subsequently leads to the activation of rel and AP-1 family transcription factors. TRAFs are recognized as downstream signal transmitters of the tumour necrosis factor (TNF) receptor family. Endometritis in Jennies correlates with an oxidative process, changes in serum biochemical parameters, Doppler indices, endoscopic appearance, elevated NF-κB expression, and increased levels of TRAF-1. Uterine inflammation is a natural response that takes place following artificial insemination or natural mating to eliminate surplus semen and microorganisms from the uterine cavity. Moreover, the acute inflammation process starts following the detection of bacteria or semen by the toll-like receptors located in the endometrial cells. Upon toll-like receptors activation, nuclear factor-kappa B is produced, leading to the activation of proinflammatory cytokines, chemokines, and cyclooxygenase-2 (COX-2). These molecules control the inflammatory signals to the immune cells. Objective: This study aimed to investigate the effect of PRP on several specific factors levels in the endometrial tissue including COX-2 and TRAF-1. Materials and Methods: We investigated several studies from January 2015-2025. These were explored in Web of science, Pubmed and Scopus. Also, used keywords were including: Platelet-rich plasma, Endometrial, COX-2, and TRAF-1. An inclusion criterion was English language and exclusion cases were non-english language and retracted studies. A total of 58 primary articles were initially retrieved from journals indexed in Web of Science, Scopus, and PubMed. Following the removal of duplicate entries, 31 distinct articles were retained for further evaluation. After meticulous scrutiny of titles and abstracts, 11 articles were ultimately selected, while 4 records were excluded due to various reasons, such as non-reporting of the relevant outcome. Finally, 7 studies were retained for the final analysis. Results: PRP effectively decreases the inflammatory reaction in mares with persistent mating-induced endometritis regardless of the timing of treatment, thereby enhancing the likelihood of a successful pregnancy. Both PRP therapies led to a reduction in polymorphonuclear neutrophils in the cytology. The number of horses with endometritis decreased in the treatment groups, and the control group showed a higher level of positive COX-2 labeling compared to the 2 treatment groups. Following intrauterine PRP infusion, there was a gradual significant decrease in TRAF-1 gene expression. Similarly, the MUC-1 gene expression also gradually decreased after intrauterine PRP infusion. Both genes remained within normal levels.  Conclusion: The effect of PRP is decreasing the inflammatory reaction in addition to a gradual significant decrease in TRAF-1 and MUC-1 genes. Keywords: Platelet-rich plasma, Endometrial, COX-2, TRAF-1. P-119 Frozen cell fate: Investigating the epigenetic changes in ovarian and testicular tissues post-cryopreservation Kokabi Hamidpour Sh1, Arjmand B2. Iranian Cancer Control Center (MACSA), Tehran, Iran. Cell Therapy and Regenerative Medicine Research Center, Endocrinology and Metabolism Molecular-Cellular Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran. Email: barjmand@sina.tums.ac.ir Cryopreservation is one of the effective approaches for the preservation of fertility in men and women, especially in those whose fertility is threatened by disease. However, challenges such as the risk of epigenetic instability caused by cryopreservation remain, which is still controversial. The study aimed to investigate the epigenetic effects of cryopreservation on ovarian and testicular tissues. The present study analyzed the literature on cryopreservation of oocytes, embryos, and testicular tissue. Comprehensive searches were conducted in databases such as PubMed, Scopus, and Web of Science. In this regard, studies have revealed that freezing can alter gene expression and protein abundance and affect epigenetically relevant factors. For example, preclinical studies have revealed that vitrification and warming of juvenile mouse ovaries reduces mRNA and protein levels of DNMT1. Also, it can alters the expression of epigenetically important genes like DNMT3B and HDAC1. In addition, cryopreservation affects imprinted genes such as Igf2r, H19, and PLAGL1 in murine ovarian tissue. Regarding, testicular tissues post-cryopreservation, it has been revealed that cryopreservation can lead to epigenetic instability, especially affecting imprinted genes like H19, PEG3, and KCNQ1OT. Additionally, regarding post-translational histone modifications, some studies report no significant changes after freezing. It is while some others report a reduction in specific histone marks. Nevertheless, the complexity of epigenomic control highlights the need for caution in interpreting findings, especially regarding the potential for de novo epimutations associated with cryopreservation protocols involving dimethyl sulfoxide and enzyme treatments. All in all, it ca be stated that investigations of epigenomic changes after ovarian tissue cryopreservation have shown various results. Some studies report minor effects, while others highlight potential imprinting defects associated with using cryopreservation techniques. Although some approaches for the treatment of male fertility via testicular tissue cryopreservation are promising, they remain experimental and further research is needed to assess long-term epigenetic effects and potential epimutations in both sexes.   Keywords: Cell fate, Cryopreservation, Genomic imprinting, Epigenetics. P-120 Recent findings on a role of novel circular RNAs in infertility Nabavian SS1, Jalal Azeez H2, Zibaei Z1, Pourmahdi M1, Rezaee S1, Shayegi M1, Afkhaminia F1, Nikoukar Gh1, Babaei E1. Department of Animal Biology, Faculty of Natural Science, University of Tabriz, Tabriz, Iran. Department of Pharmacy, College of Pharmacy, Cihan University,Erbil Kurdistan Region, Iraq. Email: babaei2539@gmail.com Reproduction involves numerous biological processes including meiosis, mitosis, hormone synthesis, neuroendocrine regulation, and development of reproductive organs. Infertility, defined as the inability to achieve pregnancy after 12 months of unprotected intercourse, affects approximately one in seven couples worldwide and poses a major challenge to global reproductive health. This narrative review aims to investigate recent findings regarding the role of circular RNAs (circRNAs) in the pathogenesis of infertility in both males and females. We performed a narrative review of literature published from 2015-2024 using PubMed, Scopus, and Web of Science databases. Keywords including "circular RNA", "infertility", "reproduction", and "assisted reproductive technology" were used. Articles were screened based on relevance, originality, and scientific quality. Both experimental and clinical studies investigating the functional roles of circRNAs in reproductive biology and infertility were included. circRNAs, a class of endogenous non-coding RNAs with covalently closed circular structures, were initially regarded as non-functional byproducts of transcription. However, recent studies have revealed their significant roles in gene regulation through various mechanisms. CircRNAs have been shown to influence gametogenesis, embryo development, ovarian aging, polycystic ovary syndrome, gynecologic malignancies, and pregnancy-related complications. Their potential as biomarkers and therapeutic targets in reproductive medicine is increasingly recognized. Additionally, the application of gene-editing technologies such as CRISPR-associated protein 9  has contributed to the identification of novel functions for circRNAs. In assisted reproductive technology, profiling circRNAs may offer insights into gamete and embryo quality, possibly improving assisted reproductive technology outcomes. CircRNAs have emerged as critical regulators of reproductive function and may contribute to the pathophysiology of infertility. Further investigations into their molecular mechanisms could lead to novel diagnostic and therapeutic strategies in reproductive medicine. Keywords: Infertility, Circular RNAs, Reproduction, Assisted reproductive technology, Non-coding RNA. P-121 A review of the impact of hormones and genetic mutations on fertility health: Innovative approaches to infertility treatment Ghadiri F. Department of Biology, Faculty of Engineering and Science, Science and Art University, ACECR, Yazd, Iran. Email: fa.ghadiri99@gmail.com Infertility is a complex condition that can be caused by a range of hormonal, genetic, and structural factors. This article examines the critical roles that hormones and genetic mutations play in both male and female fertility. Hormones such as anti-Müllerian hormone, testosterone, estrogen, prolactin, progesterone, thyroid-stimulating hormone, and gonadotropins are pivotal in regulating reproductive functions, including ovulation, menstrual cycles, and pregnancy. Variations in the levels of these hormones can lead to a variety of fertility disorders. For example, high levels of prolactin or altered levels of thyroid hormones can disrupt ovulation, while imbalances in estrogen and progesterone can interfere with embryo implantation and pregnancy maintenance. Genetic factors also play a significant role in fertility. Mutations in genes such as follicle-stimulating hormone receptor and peroxisome proliferator-activated receptor Gamma have been associated with reproductive dysfunctions, including premature ovarian failure, polycystic ovary syndrome, and male infertility. Polymorphisms in these genes can affect hormone receptor sensitivity and gene expression, leading to impaired ovarian function or sperm production. Recent advances in infertility treatments have focused on both genetic and hormonal regulation, offering new hope for participants with fertility challenges. For example, hydrogels derived from the extracellular matrix have shown promise in reconstructing the endometrium and improving embryo implantation rates. These hydrogels mimic the natural uterine environment and help support the rebuilding of the uterine lining, offering a potential solution for women with thin endometria or implantation failure. Furthermore, new developments in in vitro maturation offer a promising, less invasive alternative to traditional in vitro fertilization by improving oocyte quality and embryo development with minimal use of hormonal treatments. Additionally, the use of growth factors like cumulin and signaling molecules such as cAMP has been shown to enhance oocyte maturation, improving both oocyte quality and embryo viability without the need for extensive hormone stimulation. This approach has the added benefit of reducing the risk of ovarian hyperstimulation syndrome, a common complication in traditional in vitro fertilization treatments. These breakthroughs represent significant progress in fertility treatment, offering more personalized, less invasive, and cost-effective options for participants. With further research, these innovative therapies could lead to more successful fertility treatments, especially for women with endometrial disorders, hormonal imbalances, or those at risk of ovarian hyperstimulation syndrome. The combination of hormonal regulation, genetic screening, and advanced biomaterials offers a multi-faceted approach to addressing infertility and may pave the way for more efficient and tailored treatments in the future.  Keywords: Anti-Müllerian hormone, FSHR, In vitro maturation, Ovarian hyperstimulation syndrome, IVF. P-122 Frequency of ESR1 Gene polymorphisms rs2234693 and rs9340799 in women with recurrent pregnancy loss: A case-control study Manaviat M1, Ashrafzadeh HR2, Jamaldini SH3, Ghasemi N2. Tehran Medical Sciences, Islamic Azad University, Tehran, Iran. Abortion Research Center, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Medical Genomics Research Center, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran. Email: maryam.manaviat7375@gmail.com Background: Recurrent pregnancy loss (RPL) is a multifactorial condition that may involve genetic predispositions, including polymorphisms in estrogen receptor genes (ESR). Objective: The present study aimed to investigate the frequency of two common ESR1 gene polymorphisms, rs2234693 and rs9340799, in women with a history of RPL compared to healthy controls. Materials and Methods: This case-control study was conducted on 100 women with a history of RPL and 100 healthy women without such history. Peripheral blood samples were collected, genomic DNA was extracted, and genotyping was performed using the polymerasae chain reaction-restriction fragment length polymorphism method. Hardy-Weinberg equilibrium was assessed in the control group for both polymorphisms. Results: The genotype distribution of both polymorphisms in the control group was in accordance with Hardy-Weinberg equilibrium. A significant association was observed between the rs2234693 polymorphism and RPL, with both the CC genotype and C allele being more frequent in the RPL group. However, no significant association was found between rs9340799 and RPL, although the GG genotype was slightly more prevalent in the RPL group, it did not reach statistical significance. Conclusion: The findings suggest a possible role of the rs2234693 polymorphism of the ESR1 gene in the etiology of RPL. No meaningful association was found for rs9340799. It is important to consider ethnic and population-specific genetic backgrounds when studying polymorphism-related disease susceptibility. This study was conducted in Yazd, Iran, and contributes to the growing body of population-based genetic research on RPL. Keywords: Recurrent pregnancy loss, ESR1 gene, rs2234693, rs9340799, Polymorphism, PCR-RFLP. P-123 Expression of pre-meiotic and post-meiotic markers during in vitro spermatogenesis on testicular extracellular matrix-gelatin scaffold Momeni M1, 2, 3, Kazemi Ashtiani M4, Bashiri Z5, 6, Bagher Z7, 8, Asgari HR1, 2, Koruji M1, 2. Stem Cell and Regenerative Medicine Research Center, Iran University of Medical Sciences, Tehran, Iran. Department of Anatomy, School of Medicine, Iran University of Medical Sciences, Tehran, Iran. Department of Stem Cells and Developmental Biology, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran. Department of Cell Engineering, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran. Endometrium and Endometriosis Research Center, Hamadan University of Medical Sciences, Hamadan, Iran. Omid Fertility and Infertility Clinic, Hamedan, Iran. ENT and Head and Neck Research Center and Department, The Five Senses Health Institute, School of Medicine, Iran University of Medical Sciences, Tehran, Iran. Department of Tissue Engineering and Regenerative Medicine, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, Iran. Email: koruji.m@iums.ac.ir Background: Male infertility treatments continue to pose significant challenges, with limited options available. Recently, tissue engineering has provided new opportunities to direct the behavior of spermatogonial stem cells (SSCs) during in vitro spermatogenesis in 3-dimensional microenvironments. Objective: This study aims to evaluate the viability and differentiation of SSCs on a porous scaffold derived from testicular extracellular matrix (TECM). Materials and Methods: In this experimental study, testicular tissue from 5 rams (1 yr) was processed through decellularization to obtain TECM, which was then combined with gelatin to fabricate a hybrid scaffold using the gas foaming technique. Testicular cells were isolated from the testes of neonatal mice, and the presence of SSCs was confirmed using flow cytometry for the specific marker Plzf. Cell viability was evaluated with the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. The cells were cultured on scaffold and induced to assess the differentiation process for 4 wk. The presence of pre-meiotic and post-meiotic cells in the experimental (TECM-gelatin) and control (gelatin) groups was evaluated through real-time quantitative reverse transcription polymerase chain reaction and flow cytometry techniques. Results: According to our results, no significant differences in cell survival were observed between the 2 groups during the 7- and 14-day post-incubation periods. After 4 wk of culture, the expression of pre-meiotic genes (Plzf, Id4) and post-meiotic genes (Sycp3, Prm1) in the TECM-gelatin scaffold was significantly higher than that in the gelatin-only scaffold, as determined by real-time quantitative reverse transcription polymerase chain reaction (p < 0.001). Additionally, flow cytometry showed more sycp3-positive and acrosin-positive (post-meiotic) cells in the TECM-gelatin scaffold compared to the gelatin scaffold (p < 0.001). Conclusion: Our findings indicate that the TECM-gelatin scaffold effectively supports the proliferation and differentiation of SSCs, suggesting its potential as a valuable approach for testicular tissue engineering.  Keywords: Testis, Extracellular matrix, Spermatogonial stem cells, Differentiation, Gas foaming method. P-124 Evaluation of liposome containing hedera helix extract and miRNA-124a cytotoxicity in breast cancer cell line (MCF-7) Sadeghian-Nodoushan F1, Yaeghoobi M2, Haghirosadat BF1, Lee VS3, Akhlaghi M4. Biotechnology Research Center, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Faculty of Medicine, Shahroud University of Medical Sciences, Shahroud, Iran. Department of Chemistry, Faculty of Science, University of Malaya, Malaysia. School of Clinical Biochemistry, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Email: fhaghirosadat@gmail.com Background: Breast cancer is one of the most prevalent malignancies among women worldwide and remains a major cause of cancer-related mortality. miRNA-124 is recognized as a tumor suppressor because it regulates key oncogenic pathways. Herbal derivation like Hedera-Helix extract (HHE) is another alternative cancer treatment with low side effects; however, using it because of its low solubility and high effective dose faces limitations. Liposomal nanocarriers have emerged as promising vehicles for miRNA-based therapies and drug delivery carriers. Objective: This experimental study aimed to evaluate the efficacy of a liposomal formulation for miRNA-124 containing HHE delivery in breast cancer cells (MCF-7 cells), comparing its impact on cell viability with that of free miRNA-124a and the free form of the extract. Materials and Methods: Various liposomal formulations were synthesized using the thin-film hydration method, followed by extrusion to obtain uniform vesicles. In this experimental study, a specific molar ratio of lipid components (5%) was used to optimize the liposome composition for enhanced stability and cellular uptake. The extract was loaded into nanocarriers by using the hydration method. miRNA-124a was loaded into the liposomes using an optimized N/P ratio (1.50) by incubation at 37°C. Characterization of liposomal formulation, dynamic light scattering analysis, scanning electron microscopy analysis, atomic force microscopy analysis, drug release rate (48 hr), and encapsulation efficiency. Breast cancer cell culture and treatment, human breast cancer cell lines MCF-7 were cultured for 48 hr. After 48 hr of treatment, cell viability was assessed using the MTT assay (p < 0.005). Results: The drug load (63%) and miRNA binding of synthesized nanoparticles were appropriate. The results of microscopy techniques also demonstrated that the nanoparticles had homogenized smooth surfaces without any aggregation. This result was aligned with the result of dynamic light scattering, which showed that the surface charge of the nano-system was tiny positive (5.2 ± 1.4 mV), and its size was also suitable (94.3 ± 4.1 nm). MTT results demonstrated that the cytotoxicity of the system was significantly (52.3% ± 2.3) higher than that of the free form of the extract and miRNA, which proved its efficiency for cancer treatment. Conclusion: This study showed that the synthesized liposome can remarkably increase the cytotoxicity of the HHE which indicates its efficiency, and also showed that using miRNA-124a can increase the apoptosis of cancerous cells by affecting their molecular pathways. So, using this nanosystem for breast cancer treatment can open new windows toward a certain treatment with low side effects.  Keywords: Breast cancer, Liposome, miRNAs, Hedera helix, MTT, MCF-7. P-125 Evaluation of the expression levels of FZD3 and miR-378 in women with polycystic ovarian syndrome Bagheri AM1, Monshizadeh K1, Anbari F2, Ghasemi N2, Dehghani MR2. Department of Medical Genetics, School of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Research and Clinical Center for Infertility, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Email: dehghani.dr@gmail.com Background: Polycystic ovary syndrome (PCOS) is a common endocrine disorder that affects women of reproductive age. The cause of PCOS is unknown. Studies have shown that some genes and miRNAs, such as FZD3 and miR-378, play a role in infertility and cancer. Recent studies suggest that Wnt/FZD signaling plays a crucial role in regulating granulosa cell function and oocyte-cumulus communication, both vital for oocyte maturation. Dysregulation of FZD3 expression or its downstream pathways may lead to impaired maturation, affecting fertility outcomes. Objective: Considering the importance of FZD3 and miR-378 in ovulation, the present study aimed to determine the expression levels of FZD3 and miR-378 genes in cumulus cells of germinal vesicle and metaphase II oocytes in women with PCOS. Materials and Methods: In this case-control study, cumulus cells were collected from 25 randomly selected women diagnosed with PCOS at the Yazd Research and Clinical Center for Infertility, Yazd, Iran between March 2023 and May 2024. The diagnosis of PCOS was based on the criteria outlined in the Rotterdam guidelines. The expression levels of FZD3 and miR-378 were determined using real-time polymerase chain reaction. Results: This study demonstrated a higher expression of FZD3 and miR-378 in cumulus cells at the germinal vesicle stage compared to metaphase II oocytes (p < 0.0001). Conclusion: Excessively high levels of FZD3 and miR-378 in the cumulus cells of immature oocytes can hinder their maturation. FZD3, a component of the Wnt signaling pathway, is overexpressed in immature oocytes and may negatively impact their maturation process. Additionally, miR-378 inhibits oocyte development by targeting and suppressing essential genes. These findings are significant for women with PCOS. Keywords: PCOS, FZD3, miR-378, RTqPCR. P-126 Investigating the effect of hydroalcoholic extract of Taverniera Spartea on the AKT/mTOR/β-Catenin signaling pathway in triple negative breast cancer cellsc Faramarzi A, Moradi B. Fertility and Infertility Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran. Email: a.faramarzi90@gmail.com Background: In general, it is difficult to increase and evaluate new marketers towards breast most cancers because of its extreme organic heterogeneity. Triple tumors are proof against therapeutic methods and may recur and broaden metastatic abilities. Consequently, there is an urgent want to discover and develop new capability therapeutic agents towards them. Objective: Considering the known anticancer effects of silver spruce, here we aimed to investigate the effect of this plant on the AKT (protein kinase B) /mTOR (mammalian target of rapamycin) /β-catenin signaling pathway in triple negative breast cancer cells in order to study the mechanism of action of this plant. Materials and Methods: In this experimental study, hydroalcoholic extract of the plant was prepared and breast cancer cell line was treated with different concentrations of the extract. Cell survival was evaluated by MTT (3-[4, 5-dimethylthiazolyl-2]-2, 5-diphenyltetrazolium bromide) assay. Apoptosis was examined by diphenylamine method. Finally, real-time polymerase chain reaction technique was used to measure the expression of hypoxanthine guanine phosphoribosyl transferase, osteopontin, protein kinase B, mammalian target of rapamycin, β-catenin genes. Results: After 24, 48, 72 and 96 hr of treatment, cell viability decreased in a concentration- and time-dependent manner. The IC50 values for 24, 48, 72 and 96 hr were 1266.13 ± 8.47, 865.86 ± 11.52, 431.4 ± 27 and 98.79 ± 5.88 μg/ml, respectively. Also, the toxicity of the extract increased in a concentration- and time-dependent manner. The hydroal coholic extract after 24 hr at the IC50 concentration caused a significant increase in apoptosis (p ˂ 0.001). Also, a significant decrease in the expression of hypoxanthine guanine phosphoribosyltransferase, osteopontin, protein kinase B, mTOR, β-catenin genes was observed (p ˂ 0.001). Conclusion: Hydroalcoholic extract of silver spruce tree reduces viability and induces apoptosis in triple-negative breast cancer cells by disrupting different stages of Wnt (wingless-type MMTV integration site /β-catenin) signaling.  Keywords: Taverniera spartea, Breast cancer, Apoptosis. P-127 Identifying a new mutation (c.550delG) in exon 5 of the AURKC gene and its association with macrozoospermia Loghmani FS1, Siadat SF1, Hosseini SH2, Sabbaghian M2. Department of Biology, North Tehran Branch, Islamic Azad University, Tehran, Iran. Department of Andrology, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran. Email: M.sabbaghian@royaninstitute.org  Background: Macrozoospermia is a rare disorder characterized by large-headed, multi-flagellated spermatozoa, resulting in male infertility. The AURKC gene, located on chromosome 19, encodes a serine/threonine protein kinase critical for meiotic regulation and chromosome segregation. This gene's mutation may disrupt the protein's function and lead to abnormal sperm production. Objective: This study investigated genetic variants in exon 5 of the AURKC gene among men with macrozoospermia referred to the Royan Research Institute, Tehran, Iran. Material and Methods: This case-control study was conducted at the infertility department of Royan Research Institute, Tehran, Iran between September 2022 and August 2023. The case group included 10 infertile men diagnosed with macrozoospermia (> 15% of sperm with large heads), while the control group consisted of 10 fertile men with normal semen analyses and a history of successful fertility, selected from the institute’s clients. The inclusion criteria for both groups were based on World Health Organization standards. To assess sperm morphology, semen samples were examined under a light microscope after Papanicolaou staining. Genomic DNA was extracted from peripheral blood samples. Polymerase chain reaction and then Sanger sequencing were performed to detect the presence of the mutation. The results were analyzed using Finch TV and Nucleotide Blast. Bioinformatics tools, mutation taster and sorting intolerant from tolerant, were also used to assess the biological effects of the identified mutations. Results: A novel mutation (c.550delG; p.D184I fs10) in exon 5 of the AURKC gene was identified in 1 out of 10 patients with macrozoospermia, whereas none of the 10 controls carried this mutation. Bioinformatics analysis showed that this mutation, by generating a premature stop codon, activates the nonsense-mediated decay pathway, which increases the likelihood of mRNA degradation and protein instability. Conclusion: In this study, a novel mutation (c.550delG; p.D184I fs10) was identified in exon 5 of the AURKC gene in one patient with macrozoospermia. Bioinformatic analyses using sorting intolerant from tolerant and mutation taster tools indicate that this mutation may have significant effects on the expression and function of the protein and has been classified as a deleterious mutation. Keywords: Male infertility, Aurora kinases, Mutation. P-128 Identification of novel cytoskeleton protein involved in sperm and sertoli cells of non-obstructive azoospermia based on microarray and bioinformatics analysis Hashemi Karoii D1, Hasani Mahforoozmahalleh Z2. Department of Cell and Molecular Biology, School of Biology, College of Science, University of Tehran, Tehran, Iran. Department of Microbial Biotechnology, Amol University of Special Modern Technologies, Amol, Iran. Email: d.hashemi.karoii@ut.ac.ir Background: Non-obstructive azoospermia (NOA) is a severe form of male infertility characterized by a complete absence of sperm in the ejaculate due to impaired spermatogenesis. Objective: To strengthen the reliability of our observations, we cross-referenced our data with publicly available single-cell genomics datasets. Materials and Methods: The cytoskeleton, scaffold, and actin-binding genes were analyzed by microarray and bioinformatics (771 spermatogenic cell genes and 774 Sertoli cell genes). To validate cross-sectional studyfindings, we cross-referenced our results with data from a single-cell genomics database (GSE216907 and GSE235324). Results: In the microarray analyses of 3 human cases with different NOA spermatogenic cells and 3 case of normal cells, the expression of TBL3, MAGEA8, KRTAP3-2, KRT35, VCAN, MYO19, FBLN2, SH3RF1, ACTR3B, STRC, THBS4, and CTNND2 were upregulated, while expression of NTN1, ITGA1, GJB1, CAPZA1, SEPTIN8, and GOLGA6L6 were downregulated. There was an increase in KIRREL3, TTLL9, GJA1, ASB1, and RGPD5 expression in the Sertoli cells of three human cases with NOA, whereas expression of DES, EPB41L2, KCTD13, KLHL8, TRIOBP, ECM2, DVL3, ARMC10, KIF23, SNX4, KLHL12, PACSIN2, ANLN, WDR90, STMN1, CYTSA, and LTBP3 were downregulated. A combined analysis of Gene Ontology (GO) and STRING, were used to predict proteins' molecular interactions and then to recognize master pathways. Functional enrichment analysis showed that the biological process (BP) mitotic cytokinesis, cytoskeleton-dependent cytokinesis, and positive regulation of cell-substrate adhesion were significantly associated with differentially expressed genes (DEGs) in spermatogenic cells. Moleculare function (MF) of DEGs that were up/down regulated, it was found that tubulin bindings, gap junction channels, and tripeptide transmembrane transport were more significant in our analysis. An analysis of GO enrichment findings of Sertoli cells showed BP and MF to be common DEGs. Cell-cell junction assembly, cell-matrix adhesion, and regulation of SNARE complex assembly were significantly correlated with common DEGs for BP. In the study of MF, U3 snoRNA binding, and cadherin binding were significantly associated with common DEGs. Conclusion: Our analysis, leveraging single-cell data, substantiated our findings, demonstrating significant alterations in gene expression patterns. Keywords: Non-obstructive azoospermia, Microarray, Spermatogenic cells, Sertoli cell, Cytoskeleton protein. P-129 In silico analysis and experimental validation of imprinting gene expression (RASGRF1 and NTM) in endometrium of recurrent implantation failure Hashemi Karoii D1, Hasani Mahforoozmahalleh Z2. Department of Cell and Molecular Biology, School of Biology, College of Science, University of Tehran, Iran. Department of Microbial Biotechnology, Amol University of Special Modern Technologies, Amol, Iran. Email: d.hashemi.karoii@ut.ac.ir Background: Recurrent implantation failure (RIF) and recurrent spontaneous abortion (RSA) represent intricate issues within the realm of assisted reproductive technology, and their underlying causes are often linked to compromised endometrial receptivity. Objective: Eight microarray datasets related to RIF and RSA were retrieved from the Gene Expression Omnibus database and were subsequently integrated. Materials and Methods: To finalize the cross-sectional study, hub genes, miRNA, and long non-coding RNAs (lncRNA) with imprinting significance were pinpointed through the application of CytoHubba. In the endometrial tissue of individuals suffering from 5 RIF and 5 RSA (collected at Royan Institute, Tehran, Iran from 2023-2024), a noteworthy differential expression was observed in 33 genes, 49 microRNAs, and 137 lncRNA that are associated with imprinted gene regulation.  Results: Through a meticulous functional enrichment analysis, it became evident that the altered gene expression profile in these 2 groups primarily pertained to significant modifications in biological processes. Specifically, these changes were predominantly linked to the G-protein coupled receptor signaling pathway, the regulation of interleukin-1 beta production, and the binding of phosphatidylinositol bisphosphate within the endometrial tissue. Furthermore, a subset of key differentially expressed genesand single-cell RASGRF1, NTM, and KBTBD3 were identified as hub genes implicated in the pathogenesis of RIF, while KBTBD3, PTPN14, and DHCR7 were singled out as hub genes specifically associated with RSA. Conclusion: The real-time polymerase chain reaction validation shows that RASGRF1, NTM, and KBTBD3 are significantly changed. Keywords: In silico, Imprinting gene, Non-coding RNA, Recurrent implantation failure. The original full text of this abstract has been published: Hashemi Karoii D, Azizi H, Darvari M, Qorbanee A, Hawezy DJ. Identification of novel cytoskeleton protein involved in spermatogenic cells and sertoli cells of non-obstructive azoospermia based on microarray and bioinformatics analysis. BMC Med Genom 2025; 18: 19. P-130 Integrative transcriptomic analysis of endometrial tissue: Unveiling novel biomarkers for endometriosis diagnosis Farzaneh Farmad S1, Bakhshandeh Bavarsad S1, Ghasemi N1, 2. Department of Genetics, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Abortion Research Centre, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Email: nghasemi479@gmail.com Background: Endometriosis affects an estimated 190 million women and individuals assigned female at birth globally. This chronic, inflammatory gynecological condition is characterized by the presence of tissue resembling the endometrium outside the uterus. Many individuals with endometriosis experience severe and debilitating pain. Additionally, the condition increases the risk of infertility, fatigue, widespread pain, and other associated health issues. Endometriosis presents with diverse symptoms and impacts various stages of life. Delayed diagnosis following the onset of symptoms is a frequent challenge, and symptoms often persist or recur even after treatment. Objective: This study utilizes transcriptomic analysis to explore differences in gene expression between individuals with endometriosis and healthy controls. Overall, we demonstrated that estrogen/estrogen receptor-β and prostaglandin integrate at as-like, estrogen-regulated, growth inhibitor, leading to increased endometriotic cell proliferation and represents a novel candidate for therapeutic intervention. Materials and Methods: This study also performed an analysis of high-throughput microarray data and differential expressed genes (DEGs) based on endometrial tissue samples. Gene expression datasets were collected from Gene Expression Omnibus (GEO) database statistical analyses were performed to assess gene expression in endometriotic tissues and various plots were generated for visualization using R programming. Results: By analyzing the graphs, we found that some genes have significant gene expression changes, while others do not have significant gene expression changes. DGE: a whole lot of genes that are statistically meaningful (Padj < 0.025) and this consist of the upregulated genes and downregulated genes seen in MA and Volcano plots. Likely participating in the biological mechanisms of endometriosis, these DEGs may prove useful as novel biomarkers or therapeutic targets. Distinctive group clustering: dimensionality reduction methods (e.g., UMAP) show clear separation between case and control groups, indicating that the transcriptomic profiles can successfully separate these populations. This supports the identification of DEGs that mirror disease-specific features. Expression trends: The expression density plot and box plot were used to analyze the overall normalization of gene expression across the dataset with little technical variation. Yet there are significant expression differences in some genes in cases versus controls, underscoring their biological relevance. Pathway and functional insight: genes demonstrating significant expression changes (QQ and Volcano plots) are likely connected with key pathways that are functional in endometriosis. In the disease processes, the pathway enrichment analyses (GO or KEGG) are equally compelling but must be carried out to reveal their functional significances. The DEGs identified in this study have potential to be both validated as biomarkers and therapeutic targets for endometriosis. To further characterize the underlying biological mechanisms associated with the disease, pathway and gene ontology enrichment analyses will be conducted. Conclusion: Future studies combining transcriptomics with other omics strategies, including epigenomics, may provide helpful, comprehensive and specific biomarkers or targets to treat endometriosis. Through the identification of functionally significant alterations in gene expression in tissues involved in endometriosis, together with their associated molecular pathways available from reference databases, biomarkers for early and non-invasive diagnosis can be identified. Keywords: Endometriosis, MICRO-ARRAY, R programming, Differentially expressed genes. P-131 Pre- and post-natally exposure to Foeniculum vulgare and Linum usitatissimum alter modifying enzymes expression levels in NMRI mice ovaries Haghpanah T, Pourjafari F, Ezzatabadipour M, Nematollahi-Mahani SN. Department of Anatomical Sciences, School of Medicine, Kerman University of Medical Sciences, Kerman, Iran. Email: thaghpanah1984@gmail.com Background: Developmental exposure to exogenous estrogens, like phytoestrogens, may impact reproductive system development and its epigenetic signature. Objective: This study investigated the impact of pre- and postnatal dietary exposure to phytoestrogen-rich fennel (foeniculum vulgare; FV) and flax (linum usitatissimum; FX) on ovarian epigenetics in first-generation offspring. Material and Methods: In this experimental study, 32 NMRI pregnant mice (25-30 g, 6-8 wk old) were randomly divided into four groups (n = 8/ group): a control group receiving standard rodent chow, a fennel group (FV) receiving 500 mg/kg/day fennel, a flaxseed group (FX) receiving 500 mg/kg/day FX, and a combination group (FV + FX) receiving both. These treatments were administered via diet throughout gestation and lactation until female offspring reached puberty. On postpartum day 56, the right ovaries of female offspring were harvested for quantitative real-time polymerase chain reaction analysis of DNA methyltransferases (DNMTs) and histone deacetylases (HDACs). Results: Ovarian DNA methyltransferases expression was reduced in all treatment groups compared to controls (p < 0.05), with the FV group exhibiting the lowest levels (p = 0.03). While FX had minimal impact on HDACs expression, the FV group showed significantly decreased HDAC1 and HDAC2 expression (p < 0.05). Conversely, co-exposure to fennel and flax significantly reduced HDAC1 (p = 0.03) and increased HDAC2 (p = 0.04) expression. Conclusion: Pre and post-natal exposure to a diet regimen supplemented with fennel or FX could induce ovarian epigenetic alterations in the F1 adult pups, potentially impacting germline development. Keywords: Foeniculum vulgare, Linum usitatissimum, Ovary, Epigenetics, First generation. The original full text of this abstract has been published: Pourjafari F, Ezzatabadipour M, Nematollahi‑Mahani SN, Afgar A, Haghpanah T. In utero and postnatal exposure to Foeniculum vulgare and Linum usitatissimum seed extracts: Modifications of key enzymes involved in epigenetic regulation and estrogen receptors expression in the offspring’s ovaries of NMRI mice. BMC Complement Med Ther 2023; 23: 45. ‏Doi: 10.1186/s12906-023-03875-3. P-132 mRNA-RBP-miRNA network related to ferroptosis pathway in recurrent implantation failure Zakeri M1, 2, Ahmadi S1, 2, Ghasemzadeh Qazvini M1, 2, Jamali S1, 2, Yazdi M1, Mousavi P1, 2. Department of Medical Genetics, Faculty of Medicine, Hormozgan University of Medical Sciences, Bandar Abbas, Iran. Molecular Medicine Research Center, Hormozgan Health Institute, Hormozgan University of Medical Sciences, Bandar Abbas, Iran. Email: pegahmousavi2017@gmail.com Background: Implantation is crucial in human reproduction, requiring effective communication between the embryo and the endometrium. Recurrent implantation failure (RIF) occurs when implantation does not succeed after multiple embryo transfers, impacting about 10% of couples undergoing in vitro fertiliation. Factors influencing RIF include immunological, hematological, endocrine, and genetic aspects, particularly involving the ferroptosis pathway, a process of cell death linked to oxidative stress. Dysregulation of microRNAs (miRNAs) can also lead to reproductive disorders like RIF. Despite many studies on the role of non-coding RNA (ncRNA) and RNA-binding proteins (RBPs) in disorders related to the reproductive system, the role of these ncRNA related to the ferroptosis pathway is unclear. Objective: This study aimed to analyze the RBPs-miRNAs network involved in RIF and its role in the ferroptosis pathway. Materials and Methods: This bioinformatic study utilizes a systems biology approach with various bioinformatics tools including: NCBI Gene Expression Omnibus (GEO), FerrDb v2 database, RBP database, miRDIP v5.3.0.2, STARbase, and Cytoscape 3.10.3 software, to identify key genes related to ferroptosis pathway and their potentially regulatory RBP-miRNA network associated with RIF. The mRNA transcriptome data was extracted from the GEO database using three RNA-seq datasets: GSE111974 and GSE71332. The first dataset (GSE111974) comprised 48 samples, (including 24 RIF samples and 24 fertile control samples). The second dataset (GSE71332) contained the miRNA expression profile of seven RIF patients and 5 control endometria. The FerrDb v2 database was used to extract a list of genes associated with the ferroptosis pathway. StarBase was employed to analyze mRNA-RBP (RNA-binding protein) interactions, while the miRDIP v5.3.0.2 online tool was utilized to establish a miRNA-RBP network. The RBPDB database served as a reference for the list of RBPs, and the RM2 target was applied to identify interactions between RBPs and RNA modifiers. Results: This study utilized bioinformatics analysis to investigate the expression and significance of differentially expressed ferroptosis-related genes (DEFRGs) in RIF. We intersected a total of 1,388 ferroptosis-associated genes with 386 differentially expressed genes to identify key elements related to RIF. From this analysis, we identified 11 DEFRGs that showed differential expression between individuals with RIF and healthy controls. In subsequent analyses, we gathered 417 RBPs from the RBP database and the STARbase database, ultimately identifying 3 specific RBPs, FUS, RBM47, and ZC3H7B. We also identified 48 common microRNAs (miRNAs) from the GEO dataset, as well as those associated with the FUS, RBM47, and ZC3H7B via the miRDIP database. Finally, we constructed a network that links 11 mRNAs, 3 RBPs, 48 miRNAs, and 43 RNA modifiers using Cytoscape 3.10.3 software. These 3 RBPs including FUS, RBM47 and ZC3H7B play an important role in RIF and infertility due to their interaction with their target genes in the ferroptosis pathway.  Conclusion: These findings highlight the importance of 3 RBPs including: FUS, RBM47, ZC3H7B in developing RIF and their role in the ferroptosis pathway, offering valuable insights into the molecular mechanisms involved in this condition. Further research into these networks may lead to innovative diagnostic and therapeutic strategies to address the ferroptosis pathway in reproductive health.  Keywords: mRNA, Recurrent implantation failure, DEFRG. P-133 Unveiling mitochondrial gene regulation in female infertility: Insights from non-coding RNA networks Jamali S, Ghasemzadeh Qazvini M, Ahmadi S, Zakeri M, Hamdollahzade Sh, Ahmadi Teshnizi S, Mousavi P. Department of Medical Genetics, Faculty of Medicine, Hormozgan University of Medical Sciences, Bandar Abbas, Iran. Email: pegahmousavi2017@gmail.com Background: Mitochondria are crucial for cellular energy production and homeostasis, playing an indispensable role in reproductive processes. Mitochondrial dysfunction has been closely linked to female infertility, manifesting in poor oocyte quality, diminished ovarian reserve, and impaired embryogenesis. This condition is multifactorial, arising from combination of genetic, epigenetic, and mitochondrial factors. Recent research has highlighted the importance of non-coding RNAs, such as microRNAs (miRNAs) and long non-coding RNAs (lncRNAs), as key regulators of mitochondrial gene expression and function. Objective: In this study, bioinformatics approaches were employed to explore the LncRNA-miRNA network involved in mitochondrial pathways and its contribution to female infertility. Materials and Methods: This bioinformatics-based study aims to elucidate the regulatory networks involved in female infertility. Genes associated with female infertility were identified using the GeneCards database, while mitochondrial genes were obtained from MitoCarta3. Intersection analysis revealed 140 genes (mRNA). To construct the mRNA- miRNA network, the miRWalk database was utilized, focusing on the "Genes" module along with the "5'UTR" and "3'UTR" platform, applying a score threshold of 0.95. By intersecting the identified miRNAs with those associated with infertility from the HMDD, a total of 10 key miRNAs were identified. The miRNet 2.0 database through the "ncRNAs" platform was utilized to investigate LncRNA-miRNA interactions. A network depicting the LncRNA-miRNA relationships associated with mitochondrial pathways was constructed and visualized using Cytoscape 3.10.3 software. The CytoHubba plugin was employed to identify key miRNA and LncRNA hubs with the highest interactions, applying the infertility clustering algorithm. Results: The analysis highlighted 10 critical miRNAs hsa-miR-133b, hsa-miR-206, hsa-miR-378c, hsa-miR-449a, hsa-miR-543, hsa-miR-663b, hsa-miR-621, hsa-miR-4261, hsa-miR-1260a and hsa-miR-1302, associated with mitochondrial dysfunction in infertility. A total of 166 lncRNAs were identified as potential interactors with 5 miRNAs, hsa-miR-133b, hsa-miR-206, hsa-miR-378c, hsa-miR-449a, and hsa-miR-543, using the miRNet 2.0 databases. We developed a network involving 5 miRNA and 25 lncRNA that is associated with mitochondrial functions, consisting of 50 nodes and 78 edges, utilizing cytoscape version 3.10.3. Our study revealed 5 top lncRNAs, KCNQ1OT1, NEAT1, HCG18, SMIM25, and miR29B2CHG, indicating significant interaction levels, with support from the CytoHubba plugin using Radiality parameter. Conclusion: These findings underscore the significance of non-coding RNAs in the pathogenesis of female infertility, providing valuable insights into the molecular mechanisms underlying this condition. Certain miRNAs influence female infertility by affecting mitochondrial function and oxidative stress, crucial for oocyte quality. Further research into these networks may pave the way for innovative diagnostic and therapeutic strategies targeting mitochondrial dysfunction in reproductive health.  Keywords: Infertility, Mitochondria, miRNA, lncRNA. P-134 Gene expression of IL-33, IL-33 receptor and IL-37 in the endometrial tissues of women with endometriosis Ehsani S1, Noori S1, Afsharalam S2, Favaedi R2, Shahhoseini M2, Ghafari F3, Amirchaghmaghi E3. Department of New Biological Sciences and Technologies, University of Science and Culture, ACECR, Tehran, Iran. Department of Genetics, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran. Department of Endocrinology and Female Infertility, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran. Email: sogandehsani1@gmail.com Background: Endometriosis as an inflammatory disease is characterized by the growth of endometrial tissue outside the uterine cavity. Although the exact pathogenesis of endometriosis remains unknown immune system dysfunction has been reported in this disease. Cytokines as soluble mediators of the immune and inflammatory responses, are known to be involved in the pathogenesis of endometriosis. The Interleukin1 family (IL-1) consists of several member, including IL-33 and IL-37. IL-37 has anti-inflammatory properties, while IL-33 has inflammatory effects using ST2 as its receptor. Several studies have shown the changes of these cytokines in the serum or peritoneal fluid of women with endometriosis. Objective: This study aimed to investigate the gene expression of IL-33, IL-33 receptor (ST2) and IL-37 in the endometrial tissues of women with endometriosis compared to endometrial samples of control women. Materials and Methods: In this ongoing case-control study, 15 women with endometriosis confirmed during diagnostic laparoscopy as the endometriosis group and 15 women without endometriosis as the control group will be enrolled. Women aged between 20-45 yr old will be enrolled. Women who had any endometrial cellular changes benign uterine tumors or known inflammatory diseases will not be included in this study. After signing the informed consent, the endometrial tissues of the endometriosis group (eutopic and ectopic samples) and the endometrial tissues of the control group will be collected. Ectopic samples were obtained during laparoscopy while eutopic and control samples were collected by pipelle. After RNA extraction and cDNA synthesis, the relative expression of the studied genes (IL-33, IL-33R and IL-37) is performed using glyceraldehyde 3-phosphate dehydrogenase as a housekeeping gene and quantitative reverse transcriptase polymerase chain reaction. Results: Till now, 13 women (5 women with endometriosis and 8 control women) have enrolled in this study. There was no significant differences in expression of these gens (IL-33, IL-33R, IL-37) in endometrial tissues of endometriosis group compared to control ones (p = 0.980, p = 0.661, p = 0.999, respectively). Conclusion: According to this preliminary data, IL-33 and IL-37 gene expression did not differ between endometriotic and normal endometrial samples. Completion of the sample size in needed for conclusion. Keywords: Endometriosis, Endometrium, IL-33, ST2, IL-37. P-135 The effect of ovarian stimulation on peripheral blood natural killer T cells in endometriosis women undergoing assisted reproductive technology cycles Elyasifar F1, Balalak R1, Azimi M2, Takhiri F3, Vesali S4, Hafezi M3, Ebrahimi M2, Amirchaghmaghi E3. Department of Cell and Molecular Biology Science, Faculty of New Biological Science and Technologies, University of Science and Culture, ACECR, Tehran, Iran. Department of Stem Cells and Developmental Biology, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran. Department of Endocrinology and Female Infertility, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran. Department of Basic and Population Based Studies in NCD, Reproductive Epidemiology Research Center, Royan Institute, ACECR, Tehran, Iran. Email: amirchaghmaghi_e@yahoo.com Background: Endometriosis is a common disease of women in reproductive age characterized by the presence of endometrial glands or stroma cells outside the uterus. Endometriosis often leads to infertility and chronic pelvic pain. Among the various factors involved in its pathogenesis, immunological changes, including alterations in immune cells such as natural killer T (NKT) cells have been reported in previous studies. On the other hand, using gonadotropin-releasing hormone agonists for the long-term is one of the therapeutic approaches of endometriosis but the effect of short-term use of these drugs during ovarian stimulation cycles has been less investigated. Objective: This study aimed to investigate the effects of drugs used in ovarian stimulation cycles, on peripheral blood NKT cells (pNKT) in infertile women with endometriosis underwent assisted reproductive technology. Materials and Methods: In this prospective cohort study which is conducted at the Royan infertility clinic, Tehran, Iran between 2024 and 2025, 40 infertile women diagnosed with endometriosis will be enrolled. Peripheral blood samples (3 mL) were obtained during the ovarian stimulation protocols on three times: the 2nd or 3rd day of the menstrual cycle, starting day of gonadotropins (if possible) and ovum pick-up day. Samples were stained with specific antibodies including peridinin chlorophyll protein anti-human CD3 (T cells marker), allophycocyanin anti-human CD56 (NK cells marker), fluorescein isothiocyanate (anti-human CD16 (another NK surface marker), and phycoerythrin anti-human CD107a (NK activity marker) antibodies. After staining, lysis buffer was added to each sample and phosphate-buffered saline was used for washing. The samples were analyzed using flow cytometry. Results: Thus far, 23 women with a mean age of 33.17 yr old and a mean body mass index of 24.72 kg/m² have been included in the study. A comparison of blood samples between 2 time points (2nd or 3rd days of the menstrual cycle and ovum pick-up day) revealed that the frequency of pNKT cells (CD3+CD56+) showed a non-significant decrease (p = 0.4864). Additionally, cytotoxicity markers on CD3+ cells (CD3+CD16+CD107a+) did not significantly changed (p = 0.1696). Conclusion: At the current sample size, no significant changes in pNKT cells or their cytotoxicity have been observed. Completing the sample size of this study is needed to provide a clear understanding of the effects of ovarian stimulation drugs on pNKT cells. Keywords: Endometriosis, Natural killer T cells, Gonadotropin releasing hormone agonist, Gonadotropin releasing hormone antagonist, ART, Peripheral blood. P-136 New combinational immunotherapy with co-administration of PDL-1 siRNA and bemcentinib in the cervical cancer cell Rahavi H1, 2, Najafi A2, Asgarian-Omran H2, Aflatoonian B1, Farashahi Yazd E1, Tehrani M2. Stem Cell Biology Research Center, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Department of Immunology, School of Medicine, Mazandaran University of Medical Sciences, Sari, Iran. Email: ehsanfarashahi@gmail.com; drmtehrani@gmail.com Background: Potential immunotherapy cancer microenvironment modulators have shown lasting cancer treatment effects. New anticancer drugs targeting programmed cell death-ligand 1 (PD-L1) are immune checkpoint blockers (ICBs). ICB blockers cannot antagonize all resistance pathways, hence ICB-based immunotherapy benefits a restricted number of cancer patients. Cancer patients have a bad prognosis due to the multistep epithelial-to-mesenchymal transition (EMT) that caused metastasis. AXL receptor tyrosine kinase and its signaling enhance cancer metastasis and chemoresistance through the EMT process and alter immune response in the tumor microenvironment, making them crucial to cancer carcinogenesis. Previous studies link AXL expression to ICB-based immunotherapy resistance in tumor models and cancer patients. Thus, creating combination treatments with synergistic mechanisms or overcoming ICB-based resistance is necessary. In addition to antibody-based treatments, gene silencing by small interfering RNAs (siRNAs) has recently been investigated to modify the cancer milieu to boost the immune response. Objective: Our experimental study aimed to explore new combinatorial immunotherapy by targeting PDL-1 and AXL using siRNA and bemcentinib, respectively, in cervical cancer cells. Materials and Methods: Firstly, the transfection efficiency of siRNA in PDL-1 knockdown and IC50 of bemcentinib as a tyrosine kinase inhibitor were determined at the time point. Additionally, the basal relative expressions of related genes were assessed. Cervical cancer cells, Caski, were transfected with PDL-1 siRNA (10 nM) using lipofectamine RNAiMAX. After 6 hr of incubation, cells were treated with 2.5 µM bemcentinib. The following groups were appointed: scramble si, PDL-1 si, scramble si + bemcentinib, PDL-1 si + bemcentinib, bemcentinib, and non-treated cells. Relative PDL-1 and AXL, transforming growth factor beta, vimentin, and matrix metalloproteinase 9 mRNA expression, known as EMT-regulating genes, were measured by quantitative real-time polymerase chain reaction. The MTT assay was used to evaluate the viability of Caski cells after co-administration of PDL-1 siRNA and bemcentinib in related groups. Results: Caski cells expressed an acceptable level of related genes. It was also shown that PDL-1 siRNA significantly inhibited PDL-1 mRNA expression levels in a time-dependent manner (24 and 48 hr) (p < 0.0001). Our results revealed combining PDL-1 siRNA with bemcentinib dramatically reduced mRNA expression of PDL-1, transforming growth factor-beta, vimentin, and matrix metalloproteinase 9 but not AXL in PDL-1 si + bemcentinib vs. scramble si + bemcentinib (p < 0.0001). Also, the MTT assay showed that the knockdown of PDL-1 along with AXL inhibition led to a significant reduction of viability in caski cells in targeted groups (p < 0.02). Conclusion: The results of this study present new horizons in neoadjuvant cancer immunotherapy which render overcoming chemoresistance and broaden the scope of cancer patients who benefit from ICB-based immunotherapy. However, further in vivo investigations are necessary. Keywords: Cervical cancer, Combinational immunotherapy, PDL-1 siRNA, Axl receptor tyrosine kinase. P-137 Post-weaning exposure to sunset yellow FCF induces alterations in apoptosis signaling pathway in rat testicular tissue: Modulating effects of coenzyme Q10 Masjedi F1, Khodabandeh Z2, Namazi N3. Nephro-Urology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran. Stem Cells Technology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran. Department of Obstetrics and Gynecology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran. Email: zahrabandeh@gmail.com Background: Research on the harmful health effects of azo dyes remains limited and yields inconsistent findings. Coenzyme Q10 (CoQ10) is known for its antioxidant and anti-inflammatory properties, which may offer protective benefits across various organ systems. Objective: This study aimed to evaluate the potential toxicological impact of the commonly used food dye Sunset Yellow (SY) on the apoptotic signaling pathways in rat testicular tissue and to assess whether CoQ10 supplementation could mitigate these effects. Materials and Methods: 60 Sprague-Dawley male weanling rats (45-50 gr, 21 days old) were randomly divided into 6 groups (n = 10/each). The rats received their treatments via daily oral gavages for 6 wk. The groups received: low-dose SY (2.5 mg/kg/day), high-dose SY (70 mg/kg/day), CoQ10 (10 mg/kg/day), CoQ10 combined with low-dose SY, CoQ10 combined with high-dose SY, or distilled water (control). At the end of the treatment period, animals were euthanized, and testicular tissues were collected for gene expression analysis via quantitative real-time polymerase chain reaction and histopathological examination using hematoxylin and eosin staining. Results: High-dose SY significantly downregulated BCL2 expression (p = 0.035) and upregulated BAX (p < 0.001) and CASP3 (p = 0.006) genes compared to controls. Testicular weight (p = 0.029), volume (p = 0.014), and serum testosterone levels were significantly reduced in the high-dose group. CoQ10 co-treatment provided partial protection against these alterations but did not fully reverse them. Conclusion: High-dose SY induces testicular toxicity by disrupting apoptosis-related gene expression and testicular function. CoQ10 offers partial protective effects, though not sufficient to fully counteract SY-induced damage. Keywords: Food additive, Apoptosis, Coenzyme Q10, Testis, Caspase. P-138 Study the effect of platelet-rich plasma on gene related stem cells genesis expression in ovarian failure mouse model Fotoohiardakani GhR1, Lotfi M2, Ghasemi N3, Hassanpour Dehnavi A4, Dadbinpour A5, 6. Department of Molecular Medicine, School of Advanced Technologies in Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Department of Molecular Medicine, Abortion Research Center, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Abortion Research Center, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Departments of Biology and Anatomical Sciences, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Department of Genetics, Medical School, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Genetic and Environmental Adventures Research Center, School of Abarkouh Paramedicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Email: gholamrezafotoohiardakani@gmail.com Background: As a novel therapeutic approach, platelet-rich plasma (PRP) has the potential to revitalize ovarian tissue in women with premature ovarian failure (POF). Octamer-binding transcription factor 4 (OCT4), a POU domain transcription factor, is essential for early embryonic development and is predominantly expressed in stem cells. This transcription factor is expressed in stem cells, suggesting a fundamental role in the establishment of pluripotency. Objective: This study utilized 8-10-wk-old (25-30 gr) Syrian mice to investigate the effects of PRP on POF. Materials and Methods: A cyclophosphamide-induced POF model was established in female mice. The mice were randomly divided into three groups (n = 7/each): 1) control group, 2) POF + PRP, 3) PRP group. After injecting a dose of PRP (7 × 107 platelets), the mice were given 2 wk, then the mice were sacrifice and the ovaries were removed to evaluate the expression of the OCT-4 gene in different groups. Results: The expression levels of the OCT-4 gene were observed to be significantly elevated in the groups that received PRP treatment compared to the POF group, with a statistical significance threshold of (p < 0.001). This indicates a significantly increase in OCT-4 gene expression associated with the application of PRP. Conclusion: Given the significant increase in gene expression associated with stem cell genesis under PRP intervention in a mouse model of ovarian failure and the use of more extensive studies, PRP can be proposed as a treatment for restoring ovarian potency. Keywords: POF, Stem cells, Gene expression, PRP. P-139 New insights into cervical cancer screening: The role of DNA methylation testing in prognosis and triage Darvishali MH, Farashahi Yazd E. Genetic Engineering and Genome Editing Laboratory, Stem Cell Biology Research Center, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Email: ehsanfarashahi@gmail.com Cervical cancer is regarded as one of the most prevalent cancers in women and continues to provide a substantial public health challenge, particularly in resource-limited settings. Traditional screening and monitoring techniques for cervical cancer, such as the pap smear and high-risk human papillomavirus (hrHPV) test, have markedly diminished the worldwide incidence of cervical cancer. However, these methods cannot reliably distinguish between transient lesions and those that progress to precancerous or cancerous states. This results in difficulties in patient management, including overtreatment of lesions or overlooking some precancerous cases (undertreatment). Studies find that hypermethylation of tumor suppressor genes is markedly associated with several malignancies, including cervical cancer. An important aspect during the process of cervix carcinogenesis is the link between chronic hrHPV infection and epigenetic changes (especially DNA methylation) on certain host cell genes. Viruses like hrHPVs reprogram the epigenetic landscape of the host cell genes involved in immune evasion, cell cycle control, and apoptosis, ensuring the virus's presence in the cell and causing chronic infection. During chronic infection and with the accumulation of epigenetic changes, the progression favors the development of malignant lesions and invasive cervical cancer. Recent research indicates the effectiveness of DNA methylation testing as a complementary method for the triage and monitoring of cervical cancer. DNA methylation is an epigenetic modification that usually causes gene silencing without altering the DNA sequence. In cervical cancer, abnormal DNA methylation is observed in almost all malignancies and is strongly associated with persistent hrHPV infection. Understanding the underlying mechanisms of cancerous lesion formation and the relationship between methylation patterns and chronic hrHPV infection can help in identifying the risk of cancer and consequently in better management and treatment of cervical cancer. Research shows that nearly all cervical cancers have hypermethylation, making these patterns crucial for early detection and risk evaluation. Incorporating DNA methylation analysis into routine screening may enhance the specificity and sensitivity of existing hrHPV tests. The review highlights the correlation between DNA methylation patterns and disease progression as well as patient outcomes. Methylation-driven indicators are correlated with survival rates in cervical cancer patients, providing new opportunities for personalized therapy approaches. The detection of high-risk lesions via methylation analysis may enable prompt therapies and enhance overall survival rates. This review emphasizes the necessity for ongoing study into the function of epigenetic alterations in cervical carcinogenesis and their prospective use in clinical practice, with the goal of alleviating the burden of this preventable disease by novel screening measures. As we go towards personalized healthcare, DNA methylation testing has potential for increasing screening effectiveness and strengthening prognostic precision and patient outcomes in the management of cervical cancer.  Keywords: Cervical cancer screening, DNA methylation, Human papillomavirus, Triage. P-140 Gene expression of IL-18, its receptors and IL-18 binding protein in the endometrial tissues of women with endometriosis Noori S1, Ehsani S1, Favaedi R2, Shahhoseini M2, Hafezi M3, Amirchaghmaghi E3. Department of Cellular and Molecular Biology, Faculty of New Biological Sciences and Technologies, University of Science and Culture, ACECR, Tehran, Iran. Department of Genetics, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran. Department of Endocrinology and Female Infertility, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran. Email: saharnoori7671@gmail.com Background: Endometriosis as a chronic inflammatory disease affects women of reproductive age and characterized by the growth of endometrial-like tissue outside the uterus. Endometriosis can cause chronic pelvic pain and infertility. Several studies have shown that one of the etiologic factors in the pathogenesis of endometriosis is a dysregulation of immune responses and alteration of different cytokines as immune cells production is reported in women with endometriosis. Interleukin 18 (IL-18) a member of the (IL-1) family has proinflammatory effects. IL-18 binding protein (IL-18BP) is the natural inhibitor of IL-18 that it’s signaling is mediated through the IL-18 receptor complex (IL-18R1, IL-18RAP). Different studies showed that alterations of the IL-18 system are involved in the pathological process of endometriosis. Objective: This study aimed to evaluate the gene expression levels of IL-18, its receptors (IL-18R1, IL-18RAP) and IL-18BP in the endometrial tissue of women with endometriosis. Materials and Methods: In this ongoing case-control study, 30 women who underwent diagnostic laparoscopy will be enrolled at Royan institute, Tehran, Iran between 2024 and 2025 (15 women with endometriosis as the endometriosis group and 15 women without endometriosis as the control group). Inclusion criteria consist of age between 20-45, regular menstrual cycles and not receiving hormonal drugs in the past 3 months. Women who had malignant endometrial cellular changes or benign uterine masses were excluded. Ectopic endometrial samples from endometriosis patients were collected during laparoscopy while eutopic endometrial samples were collected simultaneously with a piple, as well as endometrial samples of the control group were obtained using a piplle. After tissue samples collection, RNA extraction is performed using Kiazole, and then cDNA synthesis was performed using SMOBio Technology kit. Gene expression levels were examined using real time polymerase chain reaction. Glyceraldehyde-3-phosphate dehydrogenase was used as housekeeping gene. Results: Till now, 5 women with endometriosis and 8 control women were enrolled. 10 tissues of endometriosis group (5 ectopic samples, 5 eutopic endometrial samples) and 8 normal endometrial tissues (control) were studied. There was no significant differences in gene expression of IL-18, IL-18BP, IL-18R1 and IL-18RAP between endometriosis and control groups (p = 0.0653, 0.6971, 0.1419, and 0.2084, respectively). Conclusion: According to this preliminary data, no significant differences was found in gene expression of IL-18 and its related genes (IL-18BP, IL-18R1, IL-18RAP) between endometriotic and normal endometrial tissues. Definite conclusion will be made after the enrollment of 30 women and completion of the study. Keywords: Endometriosis, IL-18, IL-18 receptors, IL-18 binding protein, Inflammation, Gene expression. P-141 Seminal cell-free nucleic acids as possible biomarker in male infertility: A mini-review article Javidmehr D1, Fesahat F2, Hassani F3, Talebi AR4, Shahverdi A3. Department of Reproductive Biology, Faculty of Basic Sciences and Advanced Technologies in Medicine, Royan Institute, ACECR, Tehran, Iran. Reproductive Immunology Research Center, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Department of Embryology, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran. Department of Biology and Anatomical Sciences, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Email: proftalebi@gmail.com Male infertility, accounting for nearly 40% of infertility cases worldwide, is a growing clinical concern with multifactorial etiologies, including genetic, environmental, lifestyle, inflammatory, and age-related factors. Despite available diagnostic tools such as semen analysis, endocrine and genetic evaluations, and invasive procedures like testicular biopsy, the underlying causes of idiopathic infertility remain unclear in many cases. Recent studies have highlighted the potential of seminal cell-free DNA (cfDNA) as a promising non-invasive biomarker for assessing male fertility. cfDNA, originally identified in human plasma in 1948, is released through mechanisms like apoptosis, necrosis, or cellular lysis and can be found in various body fluids, including seminal plasma. Elevated levels of cfDNA in semen have been correlated with impaired sperm morphology and motility, suggesting its association with oxidative stress, inflammation, and reproductive dysfunction. Factors such as obesity, exposure to environmental toxins, high scrotal temperature, radiation, and exogenous androgens can increase reactive oxygen species and disrupt DNA integrity in sperm. Moreover, aging contributes to DNA damage, telomere shortening, and decreased antioxidant defenses, all of which negatively impact spermatogenesis. Genetic anomalies, including Y chromosome microdeletions (especially in the AZF region), mutations, and polymorphisms, are also implicated in male infertility, emphasizing the need for advanced genomic tools in clinical diagnostics. Inflammation within the male reproductive tract often asymptomatic can further exacerbate infertility through the release of pro-inflammatory cytokines detectable in semen. Given the current limitations of conventional diagnostic methods, cfDNA profiling offers a promising avenue for understanding the molecular basis of male infertility, improving diagnostic accuracy, and optimizing assisted reproductive technologies. This review consolidates recent findings on seminal cfDNA, underscoring its diagnostic value and the need for further research to validate its clinical applications. Keywords: Male infertility, Cell-free DNA, Cell-free nucleic acid, Seminal plasma, Serum. The original full text of this abstract has been published: Javidmehr D, Fesahat F, Hassani F, Talebi AR, Shahverdi A. Seminal cell-free nucleic acids as possible biomarker in male infertility: A mini-review article. Afr J Urol 2024; 30: 54. Doi: 10.1186/s12301-024-00450-1. P-142 Alteration of interleukin-35 levels in seminal plasma and male serum of couples with recurrent spontaneous abortion Kargar R1, Tat V1, Mahmoudzadeh N1, Rahimi MM2, Sajadi H3, Sabbaghian M3, Amirchaghmaghi E4. Department of Biochemistry, Faculty of New Biological Science and Technologies, University of Science and Culture, ACECR, Tehran, Iran. Department of Developmental Biology, Faculty of New Biological Science and Technologies, University of Science and Culture, ACECR, Tehran, Iran. Department of Andrology, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran. Department of Endocrinology and Female Infertility, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran. Email: amirchaghmaghi_e@yahoo.com Background: Recurrent spontaneous abortion (RSA) as one of pregnancy complications is defined as the loss of ≥ 2 pregnancies before 24 wk of gestation. Although several factors including parental chromosomal translocations, uterine anomalies and several maternal conditions are involved in RSA pathogenesis, but no known cause could be found in some RSA cases known as idiopathic RSA (iRSA). Emerging evidence suggests that maternal immune response towards the semi-allogenic embryo plays important role in some cases of iRSA. On the other hand, seminal plasma, as surrounding fluid of sperm plays a role in nourishing and protecting the sperm. It also contains signaling molecules such as cytokines that affect reproductive tract. It was shown that an optimal balance between immunomodulatory and pro-inflammatory cytokines in seminal plasma are essential for normal embryo implantation and placentation. Interleukin (IL) 35, as new member of IL-12 family, has anti-inflammatory properties and yet the role of this cytokine does not been studied in male partner of iRSA couples. Objective: The aim of this study was to evaluate IL-35 levels in seminal plasma and male serum of couples suffering from iRSA. Materials and Methods: In this case-control study, male partners of couples with iRSA group and fertile men who had one or more child and referred to Royan institute, Tehran, Iran between November 2023 to July 2024, Tehran Iran for sex selection of next child (control group), were enrolled. Men with genital tract infection, hypogonadism, history of chemotherapy, venereal diseases or using any immune-modifying medications were not enrolled. Semen samples were collected by masturbation after 48-72 hr of sexual abstinence and blood samples were collected at same day. Blood samples were centrifuged at 3500 rpm for 10 min. Beyond liquefaction of semen, semen samples were centrifuged for 10 min at 6000 rpm to remove sperm and cellular debris. The concentration of IL-35 was detected in serum and seminal plasma using an enzyme-linked immunosorbent assay kit. Results: 23 male partners of iRSA group and 21 fertile men were enrolled. The mean age of control group was significantly higher than iRSA group (39.45 ± 3.80 vs. 37.13 ± 3.53, p = 0.045). No significant differences were found between 2 groups in regard to body mass index, smoking and alcohol consumption. The mean seminal levels of IL-35 was significantly higher in iRSA group than control group (6.16 ± 0.99 vs. 5.11 ± 1.05 ng/ml, p = 0.001). However, no significant difference was observed in regard to IL-35 levels in blood serum. Conclusion: This study showed that seminal levels of IL-35, were significantly higher in male partners of iRSA group compared to fertile men. Previous studies suggested that decreased levels of pro-inflammatory cytokines and increased levels of anti-inflammatory cytokines in seminal plasma led to defective invasion and, consequently, abnormal placentation leading to recurrent miscarriages. Further studies on other cytokines in seminal plasma are recommended.  Keywords: Interleukin-35, Seminal plasma, Blood serum, Recurrent spontaneous abortion, cytokine. P-143 Therapeutic potential of stem cell-derived exosomes in infertility disorders Ayatollahi SP1, Ghasemi-Tezerjani M1, Hoseini SM2, Montazeri F3. Department of Biology, Faculty of Science and Engineering, Science and Art University, Yazd, Iran. Hematology and Oncology Research Center, Non-Communicable Diseases Research Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Abortion Research Center, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences and Health Services, Yazd, Iran. Email: marjan.montazeri@gmai.com Infertility disorders affect many individuals worldwide, with recent lifestyle changes contributing to its increasing prevalence in both males and females. Therefore, discovering innovative approaches to prevent and treat infertility is of critical importance. Stem cells offer many advantages in regenerative medicine and are considered an ideal source for exosome extraction. Exosomes have the ability to penetrate barriers and easily deliver therapeutic cargo to target cells. Due to their low immunogenicity, reduced tumorigenic risk, and anti-apoptotic and anti-inflammatory properties, they have emerged as a promising tool in fertility preservation, diagnosis, treatment, and the prevention of infertility and pregnancy-related disorders. This narrative review aims to explore the clinical applications and advancements made by stem cell-derived exosomes in male and female infertility. A search was conducted on PubMed and Google Scholar for English articles related to the clinical applications of stem cell-derived exosomes in infertility and reproductive diseases, with a publication date range from 2020-2024. A total of 25 articles were retrieved. Based on relevance, focus on infertility-related conditions, publication type, duplication, and accessibility, 10 articles were included in the final review. The selected studies focused on infertility and related conditions including premature ovarian failure, polycystic ovarian syndrome, preeclampsia, endometriosis, intrauterine adhesion, asthenozoospermia, and azoospermia. Reported outcomes included enhanced follicular development, angiogenesis, and ovarian granulosa cell growth; improved ovarian environment and endometrial thickness; restoration of spermatogenesis and testicular function; increased sperm quantity, motility, and morphology; and reduced oxidative stress. Overall, with superior biological stability and lower immunogenicity compared to stem cells, exosomes have the potential to overcome some of the challenges associated with cell-based therapies. The high therapeutic potential of exosomes highlights the importance of thoroughly investigating the underlying mechanisms of action to enable their clinical translation in the future. Keywords: Stem cell, Exosome, Infertility, Reproductive disorders. P-144 Study of consanguinity in women with premature ovarian failure in Yazd Infertility Center in 2024 Bitarafan M, Faryaby F. Department of Medical Genetics, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Email: melina79bitarafan@gmail.com Background: In recent years, as the age of marriage increases, premature ovarian failure is diagnosed at a time when treatment is difficult and impossible. Early diagnosis can prevent complications and problems of this disease and give hope to these patients' lives. Objective: Given the high prevalence of consanguineous marriage in Iran and Yazd province, this study was designed to investigate the role of genetic kinship and family history of the disease in the occurrence of premature ovarian failure. Materials and Methods: This is a retrospective descriptive study. The statistical population consisted of 31 women with premature ovarian failure who referred to the Yazd Reproductive Sciences Institute, Yazd, Iran. The inclusion criteria for patients were a definitive diagnosis of premature ovarian failure and access to family information and marital status of these individuals. The exclusion criteria for patients were unavailability of case information and premature ovarian failure with secondary causes such as chemotherapy or ovarian surgery. First, we used Excel software to record and categorize the data. Data including age of onset of the disease, type of marriage, relationship to the spouse, and history of the disease in first and second degree relatives were extracted. We use t test and one sample proportion test for statistical analysis of data. Results: Statistical analysis showed that there is a statistically significant relationship between consanguineous marriage and the prevalence of premature ovarian failure. The relationship between family history and premature ovarian failure was also significant. The parents of 17 out of these 31 women had consanguineous marriages, and among these 17 cases, 6 mothers of individuals with premature ovarian failure had a history of miscarriage. Conclusion: The results of this study showed that there is a statistically significant relationship between consanguineous marriage and family history of the disease with the occurrence of premature ovarian failure. According to the results of the study, it is recommended that pre-pregnancy counseling be performed in families with a history of this disease, and that awareness and screening be performed in areas with a high percentage of consanguineous marriage. Keywords: Premature ovarian failure, Infertility, Consanguinity. 2025 5 01 57 134 http://ijrm.ir/article-1-3700-en.pdf