IL6 rs1800795 SNP may relate to cardiovascular pathology in alcohol abusers

Cardiovascular diseases in alcohol abusers are associated with elevation of plasma levels of proinflammatory cytokines such as IL6, IL8 and CCL2 as well as molecules involved in endothelial functioning including VEGFA, ICAM1 and EDN1. This phenomenon is supposed to be genetically determined. However to date the issue has not been investigated. Thus, we aimed to study the relationship between carriage of SNPs of IL6 (rs1800795), IL8 (rs4073), CCL2 (rs1024611), VEGFA (rs699947 and rs2010963), ICAM1 (rs281437) and EDN1 (rs1800541) genes with the serum levels of their products and the development of cardiovascular diseases in alcohol abusers. The study included alcohol abusers without apparent somatic pathology and alcohol abusers with clinical manifestations of cardiovascular disease. Serum levels of IL6, IL8, CCL2, VEGFA, ICAM1 and EDN1 were estimated by EIA. SNPs were determined by means of real-time PCR. We found that among the SNPs studied only carriers of homozygous GG genotype and G allele of IL6 (rs1800795) were more frequent in alcohol abusers with cardiovascular diseases. Moreover, carriage of homozygous GG genotype of IL6 (rs1800795) increases the probability of development of cardiovascular pathology in alcohol abusers. However, adjustment for age, gender and the presence of liver cirrhosis, hypertension and diabetes mellitus as co-variates eliminates the enhanced risk of cardiovascular pathology. Polymorphisms of IL6 (rs1800795), IL8 (rs4073), CCL2 (rs1024611), VEGFA (rs699947 and rs2010963), ICAM1 (rs281437) and EDN1 (rs1800541) did not determine serum levels of the related polypeptides.

alcohol abuse, pathology, cardiovascular system, IL6 rs1800795 SNP

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