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JOURNAL ARTICLE

Resveratrol directly affects ovarian cell sirtuin, proliferation, apoptosis, hormone release and response to follicle-stimulating hormone (FSH) and insulin-like growth factor I (IGF-I)

Alexander Sirotkin, Richard Alexa, Attila Kádasi, Erika Adamcová, Saleh Alwasel, Abdel Halim Harrath
Reproduction, Fertility, and Development 2019 April 12
30975285
The objective of our study was to examine the influence of the plant polyphenol resveratrol (R) on the rapamycin signalling pathway (mammalian target of rapamycin; mTOR) and basic ovarian cell functions in mammalian targets, as well as on their response to the physiological hormonal stimulators follicle-stimulating hormone (FSH) and insulin-like growth factor I (IGF-I). Resveratrol was found to stimulate sirtuin 1 accumulation and apoptosis, inhibit proliferation, suppress P and promote T and E release. Alone, FSH promoted proliferation and had no effect on apoptosis, but had an inhibitory effect on these processes when combined with R. IGF-I alone stimulated proliferation and inhibited apoptosis and promoted P production but not that of T; however, in the presence of R, the addition of IGF-I switched from having an anti-apoptotic to a pro-apoptotic effect and stimulated T release, but it did not modify the effect of IGF-I on proliferation and P output. These observations: (1) demonstrate that R directly affects the basic ovarian cell functions of proliferation, apoptosis and steroidogenesis, (2) provide further evidence of the involvement of FSH and IGF-I in the regulation of these processes, (3) demonstrate the ability of R to prevent and even invert the effects of FSH and IGF-I on ovarian cells and (4) indicate that the effects of R may be mediated by the mTOR-sirtuin intracellular signalling system.

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