[Effect of exogenous progesterone on 17 beta estradiol secretion in 4-day cyclic rats].
The rate of ovarian 17 beta oestradiol was showed to be decreased on the decreased on the afternoon of dioestrus 2 in 4-day cyclic female rats with cycles prolonged to 5 days following progesterone treatment as compared to untreated 4-day cyclic females. OEstradiol values also appeared lower on dioestrus 3 and prooestrus in experimental 5-day cycles than, on prooestrus, in natural 4-day cycles.
D000818:Animals; D004031:Diestrus; D004958:Estradiol / Q000097:blood / Q000378:metabolism*; D004971:Estrus; D005260:Female; D010053:Ovary / Q000187:drug effects / Q000378:metabolism*; D011247:Pregnancy; D011374:Progesterone / Q000494:pharmacology*; D011863:Radioimmunoassay; D051381:Rats; D013997:Time Factors
D011374:Progesterone; D004958:Estradiol
Action de la progestérone exogène sur la sécrétion de l'oestradiol 17 beta au cours de cycles 4 jours chez la ratte