Last data update: Jun 24, 2024. (Total: 47078 publications since 2009)
Records 1-1 (of 1 Records) |
Query Trace: Murono EP [original query] |
---|
The methoxychlor metabolite, HPTE, inhibits rat luteal cell progesterone production
Akgul Y , Derk RC , Meighan T , Rao KM , Murono EP . Reprod Toxicol 2011 32 (1) 77-84 The methoxychlor metabolite, HPTE, was shown to inhibit P450-cholesterol side-chain cleavage (P450scc) activity resulting in decreased progesterone production by cultured ovarian follicular cells in previous studies. It is not known whether HPTE has any effect on progesterone formation by the corpus luteum. RESULTS: Exposure to 100nM HPTE reduced progesterone production by luteal cells with progressive declines to <22% of control at 500nM HPTE. Similarly, HPTE progressively inhibited progesterone formation and P450scc catalytic activity of hCG- or 8 Br-cAMP-stimulated luteal cells. However, HPTE did not alter mRNA and protein levels of P450scc. Compounds acting as estrogen (17beta-estradiol, bisphenol-A or octylphenol), antiestrogen (ICI) or antiandrogen (monobutyl phthalate, flutamide or M-2) added alone to luteal cells did not mimic the action of HPTE on progesterone and P450scc activity. These results suggest that HPTE directly inhibits P450scc catalytic activity resulting in reduced progesterone formation, and this action was not mediated through estrogen or androgen receptors. |
- Page last reviewed:Feb 1, 2024
- Page last updated:Jun 24, 2024
- Content source:
- Powered by CDC PHGKB Infrastructure