Endocrine Abstracts

Context: Tissue-specific dicer1 knockout female mice display severe and irreversible damage to the Fallopian tubes that eventually leads to disruption of tubal transport of the gametes and the early embryo. The impact of Dicer1 on the function of human Fallopian tubes remains to be clarified.Objective: To determine how the expression of tubal Dicer1 is regulated in women during the ovulatory process and in the mid-secretory phase. Furthermore, the...

Polycystic ovary syndrome (PCOS) is a significant risk factor for the development and progression of type I endometrial cancer (EC). Currently, it is not known whether metformin has a direct effect on the endometria and further regulates glycolysis and mitochondrial function in PCOS patients with endometrial hyperplasia and carcinoma. Here we show that endometria from PCOS patients with endometrial hyperplasia and carcinoma have a distinct protein expression pattern of glycoly...

Accumulating clinical data suggest that women with polycystic ovary syndrome (PCOS) are at high risk for nonalcoholic fatty liver disease (NAFLD). However, it is not clear whether hyperinsulinemia and hyperandrogenism act concomitantly or independently to induce hepatic steatosis and inflammation, and the molecular mechanisms behind the interactions between insulin resistance and hyperandrogenism in the female liver remain largely unexplored. To achieve hyperinsulinemia, insul...

Peripheral insulin resistance and hyperandrogenism are the primary features of polycystic ovary syndrome (PCOS). However, how insulin resistance and hyperandrogenism affect uterine function and contribute to the pathogenesis of PCOS are open questions. Rodent models of insulin and human chorionic gonadotropin (hCG) treatment have provided systems in which to study ovarian insulin resistance, ovarian stromal hyperplasia, follicular cyst formation, and impaired mitochondrial fun...

The caveolin (CAV) consists of three isoforms (CAV1, CAV2, and CAV3) and contributes to insulin-regulated glucose metabolism. It has been reported that decreased caveolin-1 phosphorylation in the endometrium is linked with insulin resistant state in women with polycystic ovary syndrome (PCOS). Because PCOS patients often display hyperandrogenism, whether hyperandrogenism in addition to insulin resistant is involved in the regulation of caveolin expression and activation in the...