Abstract
The effects of androgens on granulosa cell stimulation by isoproterenol and follicle-stimulating hormone (FSH) were determined. Two functional parameters of granulosa cell stimulation were monitored: (a) activity of a transfected proopiomelanocortin (POMC) promoter and (b) production of progesterone. Treatment with the β-adrenergic agonist, isoproterenol, stimulated steroidogenesis, and both isoproterenol and FSH appeared to enhance POMC promoter activity. The non-aromatizable androgen, 5α-dihydrotestosterone (DHT), produced no effect on either parameter, but it potentiated the steroidogenic response to isoproterenol. Preliminary data also indicated a potentiation by DHT of the FSH-mediated increase in POMC promoter activity; results with a combination of DHT and isoproterenol were suggestive of potentiation. A possible role for androgen amplification of adrenergic stimulation in polycystic ovarian syndrome is discussed.
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