Discordant associations of lipid parameters with albuminuria and chronic kidney disease: a population-based study

Kan Sun, Diaozhu Lin, Feng Li, Chulin Huang, Yiqin Qi, Shengneng Xue, Juying Tang, Chuan Yang, Yan Li, Meng Ren, Li Yan
Lipids in Health and Disease 2015, 14: 152

BACKGROUND: Although dyslipidemia is related to the pathogenesis of renal insufficiency, which routinely available lipid measure is more applicable in estimation of kidney function is still uncertain. Our objective was to evaluate inconsistent associations of lipid profiles with both albuminuria and chronic kidney disease (CKD).

METHODS: We performed a population-based study in 9730 subjects aged 40 years or older. Definitions of abnormalities in albumin excretion were according to the latest guidelines of American Diabetes Association's Standards of Medical Care. CKD was defined as estimated glomerular filtration rate (eGFR) < 60 mL/min per 1.73 m(2) or the presence of albuminuria.

RESULTS: There were 2274 (23.4%) participants categorized as low-grade albuminuria, 639 (6.6%) participants categorized as increased urinary albumin excretion and 689 (7.1%) participants categorized as CKD. Triglycerides (TG), high-density lipoprotein cholesterol (HDL-C), Non HDL-C to HDL-C ratio, TG to HDL-C ratio were significantly correlated with urinary albumin to creatinine ratio (ACR), serum creatinine and eGFR (all P < 0.0001). Compare with other lipid parameters, TG to HDL-C ratio have shown the strongest correlation with increased odds of both increased urinary albumin excretion and CKD. No significant associations between lipid parameters and low-grade albuminuria were observed after adjustments for potential confounding factors.

CONCLUSION: Our study lends support to discordant associations of lipid parameters with albuminuria and renal function. TG to HDL-C ratio is a better marker than other routine lipid measures for identifying renal insufficiency and should be given more consideration in the clinical practice.

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