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[Oral glucose tolerance test in polycystic ovary syndrome].

OGTT was used to clarify the problem of hyperinsulinism and insulin resistance previously investigated by us in PCOS, using the tolbutamide test. The results of this latter investigation were in agreement with the previous found by us and with the similar already reported by other Authors. 26 women (7 obese), aged 14-34 years, affected by PCOS, were studied. The diagnosis of PCOS was made using clinical, hormonal, radiologic and echographic criteria. 16 age matched healthy women were used as controls. Glucose and insulin curves, glucose (GA) and insulin (IA) response areas and IA/GA ratio (insulin resistance in dex-IRI-) were studied by OGTT. Blood insulin values of patients resulted significantly more elevated than that of controls at any point of the curve and more significantly elevated were decreasing values. Mean values of insulin peaks, of insulin areas and of IRI resulted more elevated than that of controls. The presence of both an hyperinsulinism and an insulin resistance in PCOS seems therefore evident. A correlation was found between IRI values and plasma testosterone levels in non obese patients with increased urinary 17-ketosteroid output. A relationship between hyperandrogenism on one hand and hyperinsulinism and insulin resistance on the other is suggested.