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  • Title: Serum HLA-G levels in women with polycystic ovary syndrome.
    Author: Oztekin O, Fenkci SM, Fenkci V, Enli Y, Cabus U.
    Journal: Gynecol Endocrinol; 2015 Mar; 31(3):243-6. PubMed ID: 25403326.
    Abstract:
    This study was designed to determine serum human leukocyte antigen-G (HLA-G) levels and establish whether serum HLA-G level is related with insulin resistance, oxidative stress, dyslipidemia and ovarian hyperandrogenism in women with polycystic ovary syndrome (PCOS). Twenty-five patients with PCOS and 23 healthy control women were evaluated in this study. Serum HLA-G, lipid fractions, glucose, insulin, malondialdehyde (MDA), glutathione (GSH), white blood cell (WBC), sex hormone-binding globulin (SHBG) and other hormone (gonadotropins and androgens) levels were measured. The estimate of insulin resistance was calculated by homeostasis model assessment (HOMA-IR). Serum luteinizing hormone (LH), total testosterone, fasting insulin, WBC levels and LH/follicle-stimulating hormone (FSH) ratio, free androgen index (FAI) and HOMA-IR values were significantly higher in patients with PCOS compared with healthy women. However, the women with PCOS had considerably lower serum FSH, SHBG, MDA, GSH and HLA-G levels than healthy subjects. HLA-G was inversely related with HOMA-IR, FAI, LH/FSH ratio and WBC, but positively with high-density lipoprotein cholesterol. Decreased serum HLA-G level may be related with insulin resistance, ovarian hyperandrogenism and oxidative stress in women with PCOS. Nevertheless, the exact role of HLA-G in the pathogenesis of the disease remains to be elucidated.
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