Effect of Prolactin in the Absence of Hcg on Maturation, Fertilization, and Embryonic Development of in Vitro Matured Mouse Oocytes.
From: First Department of Obstetrics and Gynecology, Alexandra Hospital, University of Athens, Athens, Greece. ekiapek@otenet.gr
Annals of the New York Academy of Sciences
- Publish Date: Dec 2006
- ISSN: 0077-8923
- Volume: 1092
- Issue:
- Pages: 450-9
- Medium: Print
- Language: English
- Citation (JAMA): Kiapekou Erasmia, Zapanti Evangelia, Mastorakos George, et al. Effect of Prolactin in the Absence of Hcg on Maturation, Fertilization, and Embryonic Development of in Vitro Matured Mouse Oocytes.. Ann. N. Y. Acad. Sci. Dec 2006;1092:450-9
Abstract
Oocyte maturation is a complex process involving both the progression of meiotic cycle and the reprogramming of cytoplasmic events. The aim of this study was to investigate the effects of prolactin (PRL) in the in vitro maturation (IVM) of preantral mouse oocytes, in the absence of human chorionic gonadotrophin (hCG). Mouse preantral follicles were collected from female mice without prior hormonal ovarian stimulation and were cultured in the presence of varying concentrations of PRL (20, 100, 200, and 300 ng/mL) for 12 days. A group of in vitro matured oocytes were assessed for polar body (PB) formation, while the rest were fertilized and embryonic development was recorded. The maturation of preantral mouse follicles, as well as their fertilization and cleavage rates, observed when the culture medium was supplemented with middle- and high-range doses of PRL was beneficially affected. This effect was considerably high, although the culture media lacked hCG, a hormone extensively used in modern ovulation induction regiments, as well as in IVM media.
Mesh Headings (Keywords): Animals, Chorionic Gonadotropin, Culture Media, Culture Techniques, Dose-Response Relationship, Drug, Female, Mice, Oocytes, Ovarian Follicle, Ovulation Induction, Prolactin
Check for Full Text / PubMed Unique Identifier (PMID): 17308172
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