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Background and Objective: In pathogenesis of beta major thalassemia, tissue damage is occurring due to oxidative stress. The present study was designed to evaluate the effects of vitamin E supplementation on serum Paraoxonase, SOD, GPX enzyme activity and lipid profiles in beta major thalassemia patients. Materials and Methods: In this clinical tiral study, Sixty (25 males, 35 females) beta major thalassemia patients with age≥18 years who had criterias to enter the study, were selected randomely in two groups. The patients in interventional group, vitamin E at a dose of 400 mg/day were given for three months, with no supplementations in control group. The enzyme activities of paraoxonase, SOD, GPX and lipid profiles (LDL-c, HDL-c, triglyceride, total Antixidant Capacity) were measured prior and after 3 months in both case and control groups. Data analyzed by using paired t-test. Results: Significant increases in serum levels of vitamin E, Paraoxonase activity, HDL cholesterol (P<0.001), BMI (P≤0.001) and a significant reduction in GPX activity (P<0.05) were observed in cases compared to controls. Conclusion: The vitamin E supplementation may be useful in reducing oxidative stress and lipid profiles in beta major thalassemic patients.

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Background and Objective: Paraoxonase-1 is an important factor in preventing lipid oxidation and formation of oxidized low-density lipoprotein. There are conflicting reports on the impact of physical activity on serum level of Paraoxonase-1. This study was done to determine the effect of four weeks of endurance training on serum level of Paraoxonase-1 and lipid profile in non-athlete obese men. Method: In this clinical trial study, sixteen obese healthy non-athletic men randomly divided into intervention and control groups. Subjects in interventional group were practiced endurance running periodic for four weeks, three sessions a week with 65-80% of maximum heart rate. Blood samples collected 48 hours perior the first and 48 hours following the final training. Serum level of Paraoxonase-1 and lipid profile including cholesterol, triglycerides, low-density lipoprotein and high-density lipoprotein were measured by ELISA method. Results: At the end of the training, the serum level of of paraoxonase -1 increased 15.57% (P<0.05) in interventional group and non-significantly reduced in control group (19.25%). The serum level of serum Paraoxonase-1 in interventional group significantly increased compared to controls (P<0.05). The serum level of low-density lipoprotein in interventional group significantly reduced in comparision with controls (P<0.05). Conclusion: 4 weeks of endurance training increased serum level of paraoxonase -1 and decreased low-density lipoprotein in non-athlete obese men.