RESUMOSessenta e seis adolescentes, sendo 38 obesos (25F/13M) e 28 não obesos (23F/5M), pareados pelo sexo, idade, cor; nível de escolaridade e estágio de maturação sexual, foram submetidos a um inquérito clínico-demográfico e à avaliação clínico-laboratorial. A relação cinturaquadril foi maior no grupo dos obesos do que nos não obesos (0,86±0,08 vs. 0,74±0,04; p< 0,01), assim como as medidas de pressão arterial sistóli-ca e diastólica (120,2±12,1 vs. 105,4±9,1mmHg; p<0,01 e 74,3±7,7 vs. 65,5±9,4mmHg; p<0,01, respectivamente). A lesão dermatológica acanthosis nigricans predominou no grupo dos obesos (n= 24, 63,2%). Os obesos apresentaram valores de HDL-colesterol inferiores aos dos não obesos (36,5+10,5 vs. 43,0±9,2mg/dl, respectivamente; p< 0,05). Os níveis de triglicerídeos e ácido úrico foram maiores no grupo dos obesos se comparado aos não obesos (124,6±80,0 vs. 74,2±31,4mg/dl, respectivamente; p< 0,01 e 5,8±1,4 vs. 4,5±1,0mg/dl, respectivamente; p< 0,01). Não houve diferença nos valores de colesterol, LDL colesterol e na glicemia basal entre os dois grupos. Os adolescentes obesos procuraram tratamento na maioria das vezes movidos por uma preocupação com a saúde (n= 15, 39,5%). Um número significativo desses adolescentes já havia feito uso de medicamentos visando a perda ponderal no passado. Concluímos que a obesidade na adolescência pode estar relacionada a um perfil clínico-metabólico desfavorável, caracterizado por níveis mais elevados de pressão arterial sistólica e diastólica, triglicerídeos, ácido úrico, e mais reduzidos de HDL-colesterol; e ainda pela presença de acanthosis nigricans. ABSTRACTSixty six adolescents, 36 obese (25F/13M) and 28 non-obese (23F/5M), matched for sex, age, race, education level and Tanner stage of sexual maturation were submitted to a demographical inquire, clinical evaluation and laboratory analysis. The waist-to-hip ratio (0.86±0.08 vs. 0.74±0.04; p< 0.01) and systolic and diastolic blood pressures (120.2±12.1 vs. 105.4±9.1 mmHg; p< 0.01 and 74.3±7.7 vs. 65.5±9.4mmHg; p< 0.01), were higher in the obese group as compared to the non-obese group. Acanthosis nigricans predominated in the obese group (n= 24; 63.5%). levels of HDL-cholesterol were lower in obese adolescents (36.5±10.5 vs. 43.0±9.2 mg/dl; p< 0.05), whereas levels of triglycerides and uric acid were higher (124.6±80.0 vs. 74.2±31.4mg/dl; p< 0.01 and 5.8±1,4 vs, 4.5±1.0mg/dl; p< 0,01), respectively. No differences were found in cholesterol, LDL-cholesterol and basal glucose between the two groups, Obese adolescents sought for treatment because of concern about their health (n= 15, 39.5%). Most of them had already used antiobesity drugs in the past. We conclude that obesity in adolescence seems to be associated with a clinical and metabolic profile of insulin resistance with
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