RESUMEN
For the first time in the ethnic group of Abkhazians, the association analysis of polymorphic DNA-markers of the antioxidant genes CAT (rs1001179), MSRA (rs10098474), GPX1 (rs1050450), GSR (rs1002149), GSTP1 (rs1695), SOD1 (rs2070424), SOD2 (rs4880), PON1 (rs662), PON2 (rs7493) with age was performed. Using ROC-analysis and logistic regression, it was found that the spectrum of alleles and genotypes frequencies of PON1 and GSTP1 genes polymorphic markers change throughout the studied age period (21-107 years old); the distribution of allele and genotype frequencies of CAT and SOD2 genes polymorphic markers changes within the age of 60 years. Multilocus genetic markers of longevity were determined by the Monte Carlo Markov chain method. Among persons in the age range 60-107 years, the frequency of observation of the patterns GSTP1*G/G+PON1*G (OR=6,59, PFDR=0,018) and GSTP1*G/G+SOD1*A (OR=3,4, PFDR=0,041) is statistically significantly increased; the GSTP1*A allele in various combinations with the PON1*A, PON2*C and CAT*C alleles are less common (OR=0,3, PFDR<0,05).