20 uU/ml) and 79% had IR (HOMA >3.8). These children also had a higher prevalence of acantosis nigricans than the overweight and normal counterparts (63, 10.5 and 0% respectively, p <0.001), higher basal insulinemia: (24.4±10, 16.4±4 and 12.2±3 mU/ml respectively) and HOMA (5.3±2, 3.4±0.8 and 2.3±0.5 respectively, p <0.001). By multiple stepwise regression analysis, BMIz was the only significant predictor for basal hyperinsulinemia, HOMA and diastolic blood pressure. Age and BMIz were independent predictors for systolic blood pressure. The strongest predictor for plasma lipid levels was the family history of dislipidemia. Conclusions: Obese children have a high prevalence of metabolic complications, which are related to the severity of obesity. Most of the severely obese children have hyperinsulinism and IR. BMIz is the principal predictor for high blood pressure. Familiar history is the better predictor for dislipidemia (Rev Méd Chile 2003; 131: 259-68).]]>
0.05) a lower Insulinogenic Index (1.44±0.4 and 4.4±1.0 µU/ml/mg/dl, p <0.05), a higher total cholesterol (192±37 vs 168±34 mg/dl, p <0.05) and a higher LDL cholesterol (123±35 and 101±28 mg/dl, respectively, p <0.05). Conclusions: Obese children with or without GI have similar clinical features and body mass index. In severe obese children with marked IR, the appearance of Glucose Intolerance seems to be associated to a decrease in insulin secretion and not to an increase in IR (Rev Méd Chile 2003; 131: 419-26).]]>
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