Mediation Effect of Obesity on the Association Between Triglyceride-glucose Index and Hyperuricemia in Chinese Hypertension Adults

Background: The triglyceride glucose (TyG) index was regarded as a simple surrogate marker of insulin resistance (IR). It is confirmed that IR was significantly associated with hyperuricemia, and obesity was the risk factor for IR and hyperuricemia. However, the relationship of TyG index and hyperuricemia and the potential role of obesity in Han Chinese hypertension are not entirely elucidated.Method：A community-based cross-sectional study was conducted in 4551 hypertension patients aged 40-75 years with clinical and biochemical data. The TyG index was calculated as ln [fasting triglyceride (mg/dl) × fasting blood glucose (mg/dl)/2]. Hyperuricemia was determined as serum uric acid ≥357μmol/L (6 mg/dl) for females and ≥417μmol/L (7 mg/dl) for males. Body mass index (BMI), waist (WC) and hip circumference (HC) were regarded as obesity indexes, to evaluate the mediation effect of the association between TyG index and hyperuricemia.Result：The TyG index was higher in patients with hyperuricemia than in those without (8.99±0.61, 8.70±0.59, PConclusion：TyG index is significantly associated with hyperuricemia in hypertension patients among Han Chinese, obesity plays a partial mediation role in this relationship.