Componentes da síndrome metabólica em portadores de obesidade mórbida, segundo diferentes níveis de uricemia.

Abstract

Although uric acid has a character antioxidant, when in increased serum levels, has been associated in several studies with various pathological conditions, particularly with obesity, cardiovascular disease, diabetes mellitus, dyslipidemia, hyperinsulinemia and insulin resistance, this being identified as the primary change of the metabolic syndrome. However, these studies were not performed on samples formed specifically for morbid obeses, where hyperuricemia is a common finding in obesity. This study was undertaken to answer the question: serum uric acid in morbid obeses is associated with insulin resistance and other components of metabolic syndrome? Hundred and sixty-seven subjects with morbid obesity (49 men and 119 women, 20 to 71 years) were allocated into 4 groups according to their quartile distribution of serum uric acid. All data were obtained from their respectives records in a private clinic in Maceió (Alagoas). Patients in quartile 4 had values of BMI, triglycerides, insulin, creatinine, HOMA% and HOMA-s (p <0.05) higher than those observed among patients in the 1st quartile. The variables that correlated positively and significantly with the levels of uric acid (the Spearman correlation) were waist circumference, creatinine, BMI, insulin, HOMA%, HOMA-s and triglycerides. The multiple linear regression analysis adjusted for age indicated that the variables that associated independently and significantly to the plasma level of uric acid were the HOMA-s, waist circumference, creatinine and be male. It was concluded that the plasma uric acid in morbid obeses is independently associated with, among other factors, insulin resistance and waist circumference, and it is therefore a possible risk factor for metabolic syndrome.