Volume 10, Issue 3 (7-2012)                   IJRM 2012, 10(3): 223-228 | Back to browse issues page

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Khodadadi M, Basavaiah S, Abediankenari S. Effect of lithium chloride on the luteal steroidogenesis in gonadotropin-stimulated rat. IJRM 2012; 10 (3) :223-228
URL: http://ijrm.ir/article-1-279-en.html
Effect of lithium chloride on the luteal steroidogenesis in gonadotropin-stimulated rat
Maryam Khodadadi1 , Shiva Basavaiah1 , Saeid Abediankenari * 2
1- Department of Studies in Zoology, University of Mysore, Manasagangotri, Mysore-6, India
2- Department of Microbiology and Immunology, Faculty of Medicine, Mazandaran University of Medical Sciences, Sari, Iran , abedianlab@yahoo.co.uk
Abstract:   (2752 Views)
Background: Main function of corpus luteum is progesterone synthesis that is significantly accompanied with an increase in levels of mRNA encoding of steroidogenic enzymes known as luteal markers.
Objective: This study was designed to evaluate effects of lithium chloride on the release of steroid hormones and steroidogenic enzymes in gonadotropin-stimulated rats.
Materials and Methods: Immature 23 days old Wistar rats were divided into 10 groups; each group comprised of 8 rats, and induced with single injection of pregnant mare’s serum gonadotrophin (PMSG) and followed by single injection of human chorionic gonadotropin (hCG). Then, rats were given lithium chloride (LiCl) or saline at 12 hours post-hCG injection. Ovaries were collected in 4-hour interval from 8-24 hour post-hCG injection. Expression pattern of steroidogenic acute regulatory protein (StAR), side-chain cleavage cytochrome P450 (P450scc) and 3β-hydroxysteroid dehydrogenase (3β-HSD) genes were determined by semi-quantitative RT-PCR. In addition, serum levels of progesterone and 17β-estradiol were measured by ELISA.
Results: Our results showed that hCG stimulation of progesterone was markedly diminished and transcript levels of key steroidogenic enzymes were altered in the hormone-stimulated rats following LiCl treatment.
Conclusion: These results suggest that critical steps in the function of corpus luteum are disrupted by lithium. It is concluded that LiCl is an effective factor for suppressing of steroid genes expression.
Keywords: Luteal steroidogenesis, Lithium chloride, Corpus luteum, Progesterone, Estradiol
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Type of Study: Original Article |
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