title: [Suppressive effect of Gossypol, Gossypolone and serum from Gossypol treated rats on steroidogenesis in cultured porcine granulosa cells].
abstract: Gossypol (GP), a male antifertility agent, and Gossypolone (GN), a major metabolite of GP, have been shown to have a suppressive effect on steroidogenesis in bovine luteal cells. We examined the effect of GP, GN and serum obtained from rats given GP (GP-serum) on steroidogenesis in porcine granulosa cells (PGC). To obtain GP-serum, 50-60 day old Copenhagen rats received GP (12.5 mg/kg B.W./day, sc) for 14 days. PGC were incubated with GP, GN and GP-serum at different doses for 24 hours. GP and GN significantly suppressed Progesterone (P4) and Estradiol (E2) release in a dose-dependent manner, respectively. GP-serum also significantly suppressed P4 release in a dose-dependent manner. The magnitude of suppression of P4 obtained by GP-serum could not be explained by the amount of GP remaining in the serum. Therefore, the inhibition of P4 release by GP-serum could not be solely attributed to GP.
authors.affiliation: Department of Obstetrics and Gynecology, Nippon Medical School, Tokyo, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Ohmura
mesh_terms: D000818:Animals; D002478:Cells, Cultured; D003864:Depression, Chemical; D004305:Dose-Response Relationship, Drug; D004958:Estradiol / Q000096:biosynthesis*; D005260:Female; D006072:Gossypol / Q000031:analogs & derivatives* / Q000097:blood / Q000494:pharmacology*; D006107:Granulosa Cells / Q000187:drug effects* / Q000378:metabolism; D011374:Progesterone / Q000096:biosynthesis*; D051381:Rats; D013552:Swine
chemical_list: C043259:gossypolone; D011374:Progesterone; D004958:Estradiol; D006072:Gossypol