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en The Correlation between Selenium Dependent Glutathione Peroxidase Activity and Oxidant/Antioxidant Balance in Sera of Diabetic Patients with Nephropathy بیوشیمی Biochemistry مقالات اصلی Original Article <div style="text-align: justify;">Background: Oxidative stress is an imbalance between free radical's production and the body's ability to counteract or detoxify their harmful effects through neutralization by antioxidants, oxidative stress is thought to be involved in the pathogenesis of diabetic nephropathy. One of the key enzymatic antioxidants is glutathione peroxidase (GPx), which plays an important protective function in diabetes complications, by reducing the rising state of oxidative stress and removing toxicity from peroxides and converting them into a non-toxic substance. The objective of this research was to evaluate the rule of glutathione peroxidase in regulate oxidants/antioxidants levels diabetic patients with nephropathy. Methods: In a case-control study, we assessed serum GPx activity (Se-Dependent, non-selenium dependent and total GPx), total oxidant, lipid peroxidation, total antioxidant, and catalase in healthy control subjects (group 1), in diabetic patients without diabetic nephropathy (group 2) and diabetic patients with nephropathy (group 3). Results: GPx activity was significantly lower in T2D patients with and without nephropathy compared to healthy subject’s control. Total oxidants and lipids peroxidation have a negative correlation with the GPx and other antioxidants. Conclusions: Decreased GPx activity indicate a relationship between GPx activity and diabetic nephropathy.</div> Diabetic Nephropathy, Glutathione Peroxidase, Oxidative Stress, Reactive Oxygen Species, Selenium. 164 172 http://rbmb.net/browse.php?a_code=A-10-603-2&slc_lang=en&sid=1 Abdulateef Altuhafi 100319475328460012593 100319475328460012593 No Chemistry Department, College of Science, Cankiri Karatekin University, Cankiri, Turkey & Chemistry Department, College of Science, University of Babylon, Babylon, Iraq & Al-Mustaqbal University College, Hilla City, Babylon Governorate, Iraq. Muhammed Altun 100319475328460012594 100319475328460012594 No Eldivan Sağlık Hizmetleri MYO, Cankiri Karatekin University, Cankiri, Turkey. Mahmoud Hussein Hadwan mahmoudhadwan@gmail.com 100319475328460012595 100319475328460012595 Yes Chemistry Department, College of Science, University of Babylon, Babylon, Iraq.