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Muslim Jassim
Gholamreza Dehghan
Hamid Tayebi Khosroshahi
Mehdi Haghi


Chronic kidney disease, SOD2, GPX1, Gene polymorphism, Oxidative damage


This work aimed to investigate the association between superoxide dismutase 2 (SOD2) and glutathione peroxidase 1 (GPX1) gene single nucleotide polymorphisms (SNPs) in chronic kidney disease (CKD) patients and their influence on the serum level of oxidative biomarkers, including protein thiol and carbonyl groups (PTGs and PCGs), advanced oxidative protein products (AOPPs), nitrotyrosine, malondialdehyde (MDA), malondialdehyde adducts (MDA adducts), total oxidant status (TOS) and prooxidant-antioxidant balance (PAB). For this purpose, blood samples were obtained from 50 CKD patients with a mean age of 70.65±4.85 years. Real-time polymerase chain reaction was used for genotyping. Byproducts of oxidative stress were analyzed by ELISA and UV spectroscopic or calorimetric methods. The obtained results indicated that the risk of CKD development in subjects with the GPX1 Lue/Lue genotype increased (OR=1.67, p<0.05), which was considerably greater in people with the combination of SOD2 Val/Val/GPX1 Leu/Leu genotype (OR=1.92, p<0.05). Our results showed that the concentration of MDA, PTG, PCG, and BAP was increased in subjects carrying the SOD2 Val/Val genotype. Also, the findings revealed that individuals with the GPX1 Lue/Lue genotype showed higher levels of MDA, MDA adducts, PTG, and nitrotyrosine in the serum. Our findings supported the hypothesis that the genotypes SOD2 Val/Val and GPX1 Leu/Leu greatly enhance the risk of CKD.

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