Relationship of hyperuricemia with low density lipoprotein , liver function tests and markers of systemic inflammation in patients with morbid obesity.

To examine the relationship of uric acid levels with parameters of systemic inflammation, metabolic dysfunction as well as anthropometric parameters and liver function tests in subjects with morbid obesity.

C-reactive protein (CRP), tumour necrosis factor-alpha, and interleukin 10 (IL-10) were analyzed in 49 women and men with morbid obesity, relating these markers with uric acid, hepatic function tests, anthropometric and metabolic parameters. Metabolic parameters as serum glucose level, glycosylated hemoglobin, total cholesterol, triglycerides, high density lipoprotein and low density lipoprotein (c-LDL) as well as hepatic function parameters were measured in all subjects.

-Comparing subjects with morbid obesity without hyperuricemia versus subjects with morbid obesity and hyperuricemia, an increase of total bilirubin values and gamma glutamil trans peptidase (GGT) was observed, suggesting hyperuricemia as associated with alteration of hepatic metabolism. Serum uric acid levels were statistically correlated with c-LDL, total bilirubin, albumin, GGT and CRP suggesting hyperuricemia could be associated with a dyslipidemic state, hepatic damage and increase in acute pro-inflammatory phase markers. In addition, a multiple linear regression analysis revealed that GGT and IL-10 were better predictors of the behavior of uric acid in the study population.

These results suggest an -interdependent relationship among serum uric acid, CRP and IL-10 levels, which could be related to early hepatic -damage.