The correlation of aromatase activity and obesity in women with or without polycystic ovary syndrome

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• 作者：Jie Chen ; Shanmei Shen ; Yong Tan ; Dong Xia ; Yanjie Xia…
• 关键词：PCOS ; Aromatase activity ; Obesity ; Estradiol ; Testosterone
• 刊名：Journal of Ovarian Research
• 出版年：2015
• 出版时间：December 2015
• 年：2015
• 卷：8
• 期：1
• 全文大小：351 KB
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• 刊物主题：Gynecology; Reproductive Medicine;
• 出版者：BioMed Central
• ISSN：1757-2215

文摘

Background This study aimed to investigate the effect of polycystic ovary syndrome (PCOS) on the association of aromatase activity assessed by estradiol-to-testosterone ratio (E2/T) with body mass index (BMI) in women. Methods This was a cohort study in five centers for reproductive medicine in China. Data were collected from July 2012 to December 2013. PCOS patients (n--85) and non PCOS, healthy, age-matched controls (n--97) were included. Plasma sex hormones including estradiol (E2), testosterone (T), follicle stimulating hormone (FSH), and luteinizing hormone (LH) were measured by ELISA, together with BMI and E2/T being calculated, on the third day of the menstrual cycle. Aromatase activity in PCOS patients with different BMI, T and E2 levels were compared. Results E2/T was significantly lower (P--.05) while BMI was significantly increased (P--.05) in PCOS than non-PCOS. No significant difference was observed in E2/T among different BMI subgroups of either PCOS or control. Ovarian aromatase activity was decreased in PCOS patients which was independent of BMI. Hyperestrogen promoted ovarian aromatase activity, while hyperandrogen inhibited such activity, both in a dose-dependent, biphasic manner. Conclusions Ovarian aromatase activity was lower in PCOS, which was independent of BMI. New therapeutic strategies can be developed by targeting aromatase activity for treating PCOS women, especially those with obesity.