Abstract
Objective: To clarify the role of P in ovulation, fertilization, and early embryonic development using RU486, a potent P receptor blocker.Design: Ovulatory efficiency, IVF, and early embryonic development were evaluated after RU486 administration in vivo and in vitro.Setting: Research laboratory of a university hospital.Participants: Mature male and female New Zealand white rabbits.Interventions: Animals were treated with RU486 or vehicle for 3 days before hCG-induced ovulation. Ovaries treated with hCG to induce ovulation were perfused for 6 hours in vitro with RU486 or vehicle. In vitro fertilization was performed in the presence or absence of RU486.Main Outcome Measures: The percentage of mature follicles ovulating (ovulatory efficiency) was determined after in vivo and in vitro treatment. Fertilization, morula, and blastocyst development were evaluated every 24 hours for 120 hours.Results: RU486 significantly inhibited ovulation, fertilization, and early embryonic development.Conclusions: Progesterone plays a significant role in ovulation, fertilization, and preimplantation embryonic development.
| Original language | English |
|---|---|
| Pages (from-to) | 627-633 |
| Journal | Fertility and Sterility |
| Volume | 64 |
| Issue number | 3 |
| Publication status | Published - 1995 |
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Chen, S. H., Dharmarajan, A., Wallach, E. E., & Mastroyannis, C. (1995). RU486 inhibits ovulation, fertilization and early embryonic development in rabbits: in vivo and in vitro studies. Fertility and Sterility, 64(3), 627-633.