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Human Reproduction, Vol. 11, No. 10, pp. 2107-2113, 1996
© 1996 European Society of Human Reproduction and Embryology

research-article

Endocrinology: Effect of follicular fluid on granulosa luteal cells from polycystic ovary

C.L. Andreani1, E. Pierro1, N. Lazzarin1, A. Lanzone2, A. Caruso1 and S. Mancuso1,3

1Istituto di Ginecologia e Ostetricia dell'Università Cattolica del Sacro Cuore Largo A Gemelli 8, 00168 Roma 2Istituto di Ricerca Oasi Troina, Enna, Italy

Correspondence: 3To whom correspondence should be addressed

Recent data suggest that follicular fluid may play an important role in the endocrine balance of polycystic ovary syndrome, probably by acting on the theca-granulosa cell relationship. The aim of this study was to evaluate the effect of steroid-free follicular fluid on steroidal response and cell proliferation of human granulosa luteal cells from polycystic (POGC) and normal ovary (NC). Granulosa cells (from both POGC and NC) were cultured for 48 h with or without increasing dilutions of follicular fluid (FF) obtained from polycystic (FFp) and normo-ovulating (FFc) patients. Both follicular fluids were able to elicit aromatase activity as well as progesterone production and thymidine incorporation. POGC, when incubated with FFp, showed a lower increase of aromatase activity and progesterone production with respect to NC. Furthermore, the proliferation rate was increased by incubation with either follicular fluid, but the increase was less with FFp compared to FFc Aromatase/[3H]thymidine (A/T) and progesterone/[3H]thymidine (P/T) ratios could be considered to be representative of the contribution of the single cell unit to steroidogenesis. Using high concentrations of either follicular fluids, POGC showed a higher A/T ratio compared with NC. Moreover, the same treatment strongly decreased P/T ratio in POGC, while it was ineffective in NC. Our study shows that an abnormal interaction between POGC and their own follicular fluid could be implicated in the pathogenesis of the altered steroidal response in these cells, and that in particular it could affect the proliferation rate.

Key words: aromatase activity/follicular fluid/granulosa cells/polycystic ovary/proliferation


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