Effect of alpha-tocopherol on lipid peroxidation in isoproterenol induced myocardial infarction in rats.
No Thumbnail Available
Date
1997-10-11
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
The effect of alpha-tocopherol pretreatment on lipid peroxidation and antioxidant status in isoproterenol induced myocardial infarction was studied in rats. Isoproterenol administered rats showed a significant increase in lipid peroxides in serum, heart and aorta. A significant increase in serum iron level with a significant decrease in iron binding capacity was also observed. The levels of antioxidants such as ceruloplasmin, glutathione and the activities of antioxidant enzymes such as superoxide dismutase, catalase, glutathione peroxidase, glutathione reductase and glutathione-S-transferase decreased significantly in isoproterenol administered rats when compared to control. The activity of Na+K+ATPase decreased significantly and the activity of Ca2+ATPase increased significantly in heart and aorta of isoproterenol administered rats. alpha-tocopherol pretreated rats maintained the levels of antioxidants, membrane bound enzymes and activities of antioxidant enzymes near normal, on isoproterenol administration, thus establishing its effect as an antioxidant.
Description
Keywords
Citation
Ithayarasi AP, Devi CS. Effect of alpha-tocopherol on lipid peroxidation in isoproterenol induced myocardial infarction in rats. Indian Journal of Physiology and Pharmacology. 1997 Oct; 41(4): 369-76