Lipid peroxidation and antioxidative status in β-thalassemia major patients with or without hepatitis C virus infection

Background: Information pertaining to the lipid peroxidation and antioxidative status of patients with beta-thalassemic major, with or without hepatitis C virus infection, has been scanty. Methods: We report here the results of our efforts in the evaluation of lipid peroxidative status, antioxidants, and vitamin A, E and C levels in the sera of a group of patients (n=42) with transfusion- dependent b- thalassemic major with or without HCV infection. Results: Firstly, plasma thiobarbituric acid reactive substance, a lipid peroxidation product, in these patients was found to be increased significantly when compared to the disease-free controls (p < 0.05). Conversely, levels of plasma vitamins A, E and C were all shown to be drastically reduced as compared to the disease-free controls (p < 0.01). In parallel with these data, we also found that HCV infection did play some role in aggravating the depletion of plasma vitamin E and C levels in the beta-thalassemic patients. In contrast, HCV infection did not seem to alter the levels of reduced glutathione (GSH) as well as antioxidant enzyme activities including superoxide dismutase and GSH peroxidase. Conclusions: Taken together, our data indicate that excessive lipid peroxidation and a profound depletion of plasma vitamin A, E and C levels exist in patients with beta-thalassemic major. These data suggest that antioxidant supplementation to the patients for the purpose of alleviating the oxidative stress may be warranted.