Interactions of the LIPG 584C > T polymorphism and alcohol consumption on serum lipid levels

Both endothelial lipase gene (LIPG) 584C > T (rs2000813) polymorphism and alcohol consumption modulate serum lipid levels. But their interactions on serum lipid profiles are not well known. The present study was undertaken to detect the interactions of LIPG 584C > T polymorphism and alcohol consumption on serum lipid levels. Genotyping of the LIPG 584C > T was performed in 763 unrelated nondrinkers and 520 drinkers aged 15–85 years. The levels of serum total cholesterol (TC), triglyceride (TG), high-density lipoprotein cholesterol (HDL-C), apolipoprotein (Apo) AI, and the ratio of ApoAI to ApoB were higher in drinkers than in nondrinkers (P < .01 for all). There were no significant differences in the genotypic and allelic frequencies between nondrinkers and drinkers. The levels of TC, HDL-C, and ApoAI in nondrinkers were different among the three genotypes (P < .05–.01), the subjects with CT genotype had higher TC, HDL-C, and ApoAI levels than the subjects with CC genotype. The levels of HDL-C and ApoAI in drinkers were different among the three genotypes (P < .001 and P < .05; respectively), the individuals with TT genotype had higher HDL-C and ApoAI levels than the individuals with CT and CC genotypes. The interactions between LIPG 584C > T genotypes and alcohol consumption on serum HDL-C (P < .01) and ApoAI levels (P < .05) were also detected by using a factorial regression analysis after controlling for potential confounders. The levels of TC in nondrinkers were correlated with LIPG 584C > T alleles (P < .05), whereas the levels of TG and HDL-C were associated with LIPG 584C > T alleles (P < .05) and genotypes (P < .05), respectively. These results suggest that the subjects with TT genotype benefit more from alcohol consumption than the subjects with CT and CC genotypes in increasing serum HDL-C and ApoAI levels.