Aim: Elevated levels of plasma homocysteine and depressed ghrelin levels have been found to be associated with insulin resistance in a number of clinical situations, such as polycystic ovary syndrome. This study was designed to determine the relationship of plasma homocysteine and ghrelin levels with obesity in polycystic ovary syndrome.
Material And Methods: Forty-four adolescents and young women (24 lean, 20 obese) 16-21 years old with polycystic ovary syndrome and age matched 20 healthy adolescents and young women were participated the study. Fasting samples were collected for serum vitamin B12, folate, plasma total homocysteine and ghrelin levels. Serum levels of follicle-stimulating hormone, luteinizing hormone, dehydroepiandrosterone sulfate, insulin, 17-hydroxyprogesterone, free testosterone, sex-hormone binding globulin were measured. Also, serum concentrations of total cholesterol, high-density lipoprotein cholesterol, low-density lipoprotein cholesterol, triglycerides were determined. Oral glucose tolerance test was done, and HOMA-IR index was used to define insulin resistance.
Results: Plasma total homocysteine levels were significantly higher in women with polycystic ovary syndrome and their plasma ghrelin levels were depressed compared to control group (P < 0.05). Obese adolescents with polycystic ovary syndrome had more depressed plasma ghrelin levels compared to lean ones (P < 0.05). Homocysteine levels didn't correlate with body mass index, but positively correlated with insulin resistance (P < 0.05).
Conclusion: Elevated plasma homocysteine levels in polycystic ovary syndrome was independent from obesity. Adversely ghrelin levels were depressed with polycystic ovary syndrome in relation to obesity.
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