Abstract
Today there is a need to create a set of laboratory tests, including genetic ones, to determine the risk of developing and progression of liver cirrhosis (LC). The aim of the work: to determine the concentration of tumor necrosis factor-a (TNF-a), interleukin 6 (IL-6) and vascular endothelial growth factor (VEGF) in blood serum, as well as their polymorphism genes - TNF-a in the -308G /A region (rs1800629), IL-6 in the -174G/C region (rs1800795) and VEGFA in the -634G/C region (rs2010963) - in LC patients in the Perm region. Material and methods. We examined 46 patients with LC of viral (HCV) and alcoholic etiology and 80 healthy donors. Determined the serum concentration of TNF-a, IL-6 and VEGF by ELISA. The analysis of genetic markers TNF-a -308G/A, IL-6 -174C/G and VEGFA -634G/C by qPCR method. Results. The development of LC is accompanied by activation of inflammatory mechanisms with an increase in the level of proinflammatory cytokines TNF-a (p=0,0001), IL-6 (p=0,0001) and endothelial damage with activation of neoangiogenesis due to hyperproduction of VEGf (p=0,01) in serum. The study of single nucleotide polymorphisms of cytokine genes showed a significantly higher frequency of occurrence in the group of LC patients than in donors of the minor allele A of the TNF-a -308G/A gene, the CG genotype of the IL-6 -174C/G gene and the CC genotype of the VEGFA-634G/C gene. It allows us to attribute them to possible genetic predictors of LC development. Conclusion. Determination of genetic markers TNF-a -308G/A, IL-6 -174C/G and VEGFA-634G/C allows us to assess the increased risk of possible development of LC under the influence of various etiological factors.