Abstract

Objective To assess total, active and active to total serum ghrelin ratio in normal weight women with polycystic ovary syndrome (PCOS) and in healthy ovulatory control women.Study design: The study included 50 normal weight women with PCOS with a mean age of 23.70 ± 4.99 years and 10 control women with a mean age of 30 ± 5.80 years. The diagnosis of PCOS was based on the presence of biochemical hyperandrogenemia, chronic anovulation and polycystic ovarian morphology according to the Rotterdam ESHRE/ASRM-sponsored PCOS Consensus Workshop Group. Serum total and active ghrelin were measured by RIA, using commercially available kits. Results A significantly lower serum active/total ghrelin ratio was noted in the more severe form of PCOS with hyperandrogenemia, chronic anovulation and polycystic ovarian morphology. Both total and active serum ghrelin levels were negatively correlated to hirsutism score, to plasma glucose levels and to QUICKI and HOMA-IR indices of Insulin Resistance. A statistically significant difference was detected between the more severe and the milder forms of PCOS, concerning serum levels of total ghrelin ( p = 0.017), active ghrelin ( p = 0.007) and the active/total ghrelin ratio ( p = 0.026). Conclusions The results of the present study demonstrate an altered active to total ghrelin ratio, as well as a tendency towards lower both total and active fasting serum ghrelin levels in normal weight PCOS, more pronounced in the more severe forms of the syndrome.

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