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Effects of interleukins 1, 2 and 3 on follicle-stimulating hormone-induced differentiation of rat granulosa cells

, : Effects of interleukins 1, 2 and 3 on follicle-stimulating hormone-induced differentiation of rat granulosa cells. Molecular and Cellular Endocrinology 62(1): 103-111

A growing body of evidence indicates that substances released by activated immune cells can directly influence the functions of various endocrine cells. In the present study, the direct in vitro effects of interleukins (IL) 1, 2, and 3 on follicle-stimulating hormone (FSH)-stimulated steroidogenesis and luteinizing hormone/human chorionic gonadotropin (LH/hCG) receptor induction in granulosa cells were examined. In the absence of FSH, none of the interleukins stimulated steroid production or LH/hCG receptor induction during a 2-day culture period. However, in the presence of FSH, both IL-1 alpha and IL-1 beta inhibited, in a dose-dependent manner, progesterone and estrogen production as well as LH/hCG receptor induction in response to FSH. In contrast, both agents augmented 20 alpha-hydroxy-4-pregnen-3-one (20 alpha-OH-P) production stimulated by FSH. In all cases, less IL-1 beta than IL-1 alpha was required to produce a comparable effect. IL-2 slightly, but significantly, enhanced both FSH-stimulated progesterone and 20 alpha-OH-P production but had no effect on FSH-stimulated estrogen production or LH/hCG receptor induction. IL-3 potentiated the 20 alpha-OH-P response to FSH by up to 65% but had no effect on FSH-stimulated progesterone or estrogen production or LH/hCG receptor induction. These data suggest that the interleukins, which are key mediators of immune responses, may affect mechanisms crucial for the maturation and differentiation of granulosa cells and thus may also play a regulatory role in reproductive function.


PMID: 2501121

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