The effect of triglycerides to high-density lipoprotein cholesterol ratio on the reduction of renal function: findings from China health and retirement longitudinal study (CHARLS)

Previous studies show that abnormal lipoprotein metabolism can increase the prevalence of chronic kidney disease (CKD). This study prospectively investigated the association of triglycerides to high-density lipoprotein cholesterol (TG/HDL-C) ratio and renal dysfunction in the Chinese population. This longitudinal cohort research examined 7,316 participants (age range: 22-93) from the China Health and Retirement Longitudinal Study (CHARLS), including 6,560 individuals with estimated glomerular filtration rate (eGFR) ≥ 60 mL/min/1.73 m (normal renal function, NRF) group and 756 with eGFR 30 % decrease in eGFR from baseline. The study results showed that TG/HDL-C ratio was positively associated with the risk of renal function decline in the NRF group (OR 1.30, 95 %CI 1.03-1.65, P = 0.03) and the IRF group (OR 1.90, 95 %CI 1.21-3.23, P = 0.02) when adjusting for age, gender, obesity, diabetes, hypertension, waist circumference, drinking, smoking, history of heart disease and stroke, low-density lipoprotein cholesterol and eGFR category. Analysis of the IRF group indicated that relative to the group of TG/HDL-C 30 % decline in eGFR (OR 2.56, 95 %CI 1.05-6.38, P = 0.04). The high TG/HDL-C ratio was an independent risk factor for declining renal function in the Chinese population.