TY - JOUR
T1 - RU486 inhibits ovulation, fertilization and early embryonic development in rabbits: in vivo and in vitro studies
AU - Chen, S.H.
AU - Dharmarajan, Arunasalam
AU - Wallach, E.E.
AU - Mastroyannis, C.
PY - 1995
Y1 - 1995
N2 - 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.
AB - 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.
M3 - Article
VL - 64
SP - 627
EP - 633
JO - Ferility and Sterility
JF - Ferility and Sterility
SN - 0015-0282
IS - 3
ER -