Showing 3 results for Al-Hasani
Byron Asimakopoulos, Nikos Nikolettos, Safa Al-Hasani,
Volume 1, Issue 1 (1-2003)
Abstract
Spermatids are the earliest male germ cells with one set of haploid chromosomes. After experiments, mainly in rodents, the spermatid injection was introduced in human assisted reproduction to the treatment of men with non-obstructive azoospermia. Spermatid injection is a technique with particular difficulties that may negatively influence the outcome. The identification, isolation and the assessment of viability, especially for round spermatids, require intensive work and considerable experience. Up to date, it appears that the rates of fertilization and implantation with round spermatid injection are dramatically low and significantly less compared to the use of elongated spermatid injection. The extremely low fertilization potency of the round spermatids led to attempts for their in-vitro culture and maturation. The immaturity of round and elongated spermatids has raised concerns regarding the potential genetic risk for the offspring. Under these facts, a reconsideration of the use of spermatids in assisted human reproduction is necessary.
Mohamed Youssry, Batuhan Ozmen, Yasser Orief, Khaled Zohni, Safaa Al-Hasani,
Volume 5, Issue 5 (7-2007)
Abstract
Fertilization involves direct interaction of the sperm and oocyte, fusion of the cell membranes and :::::union::::: of male and female gamete genomes. The completion of this process and subsequent embryo development depend in part on the inherent integrity of the sperm DNA. Sperm genome quality has been emphasized for several years as playing a major role in early embryogenesis. There is clinical evidence showing that human sperm DNA damage may adversely affect reproductive outcomes and that spermatozoa of infertile men possess substantially more DNA damage than do spermatozoa of fertile men. Testing DNA integrity may help selecting spermatozoa with intact DNA or with the least amount of DNA damage for use in assisted reproductive techniques (ARTs). This review will focus on how sperm DNA is organized, what causes sperm DNA damage and what impact this damage may have on reproductive outcome.
Sara Darbandi, Mahsa Darbandi, Hamid Reza Khorram Khorshid, Abolfaz Shirazi, Mohammad Reza Sadeghi, Ashok Agarwal, Safaa Al-Hasani, Mohammad Mehdi Naderi, Ahmet Ayaz, Mohammad Mehdi Akhondi,
Volume 15, Issue 10 (12-2017)
Abstract
Nuclear transfer procedures have been recently applied for clinical and research targets as a novel assisted reproductive technique and were used for increasing the oocyte activity during its growth and maturation. In this review, we summarized the nuclear transfer technique for germinal vesicle stage oocytes to reconstruct the maturation of them. Our study covered publications between 1966 and August 2017. In result utilized germinal vesicle transfer techniques, fusion, and fertilization survival rate on five different mammalian species are discussed, regarding their potential clinical application. It seems that with a study on this method, there is real hope for effective treatments of old oocytes or oocytes containing mitochondrial problems in the near future.
