Abstract
The aim of this study was to determine the changes of plasma lipid peroxidation, zinc and erythrocyte Cu-Zn superoxide dismutase activity in patients with type 2 diabetes mellitus and healthy control in Gorgan city. Fifty type 2 patients with diabetes mellitus and 50 people without diabetes were included in this randomized study. None of patients studied had any diabetic complications. The levels of plasma malondialdehyde and zinc from type 2 diabetes mellitus patients (6.24±0.85 nmol mL-1 and 116.78±5.51 μ dL-1) and control groups (3.63±0.97 nmol mL-1 and 146.86±9.06 μg dL-1) were determined. Erythrocyte Cu-Zn superoxide dismutase activity from patients with diabetes (675.34±60.89 U g-1 Hb) and control groups (1052.70± 52.76 U g-1 Hb) were determined. The increased plasma lipid peroxidation and decreased plasma zinc and erythrocyte Cu-Zn superoxide dismutase activity that we observed in patients with type 2 diabetes mellitus may predispose to the development of cardiovascular complications. We propose that diabetic patients may have elevated requirement for antioxidants. Supplementation with zinc and vitamin or dietary free radical scavengers such as vitamins E and C or tomato, orange and etc. have a potential role in boosting antioxidant-related defences and maybe important in patients with diabetes.
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