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Contraception. 1986 Dec;34(6):639-46.

Inhibition by gossypol of cyclic AMP production in mouse Leydig cells.

Abstract

Gossypol has been shown to inhibit steroidogenesis in leydig cells. This study examined the mechanism of this action by investigating the effect of gossypol on leydig cell hCG receptor binding, adenylate cyclase activity and cyclic AMP production in leydig cells. Gossypol had no effect on hCG binding to cell membranes but inhibited LH-stimulated cyclic AMP production in whole purified leydig cells. It also reduced the stimulation caused by LH, Gpp(NH)p, forskolin and fluoride in membranes from leydig cells and also from liver. It is therefore possible that gossypol affects cyclic AMP production at the level of ATP conversion to cyclic AMP, although effects on the G-protein and catalytic subunit cannot be ruled out.

PMID:
3030630
[Indexed for MEDLINE]
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