Alleles and genotypes of polymorphic markers of paraoxonase 1 and paraoxonase 2 genes (PON1 and PON2) encoding enzymes of the organism antioxidant defense were compared in type 1 diabetes mellitus patients with or without diabetic nephropathy. The patients with nonoverlapping (“polar”) phenotypes constituted different groups. The first group contained patients with diabetic nephropathy (DN+, n = 62), clinical proteinuria (albuminuria above 300 mg per day), and at least 15-year disease duration. In control group, the patients had no diabetic nephropathy (DN−, n = 68), their albuminuria was below 200 mg per day, and disease duration was at least 20 years. Comparative analysis with exact Fisher’s test revealed no significant differences in frequencies of alleles and genotypes of the PON1 gene polymorphic marker Gln192Arg and of PON2 gene polymorphic markers Ala148Gly and Cys311Ser. Our results suggest that the polymorphic markers studied are not associated with diabetic nephropathy among Russian patients in Moscow.
Russian Journal of Genetics – Springer Journals
Published: Jul 15, 2005
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