Abstract

 Background and Objectives

 Myocardial infarction (MI) is one of the most important causes of death in the world. The platelets play an important role in ischemic myocardial disease in many ways after a brief episode of ischemia, oxygen-derived free radicals are generated in several pathological processes. Oxidation of platelet enzymes such as xanthine oxidase and lipid peroxidation may increase after MI.

 Materials and Methods

 In this cross-sectional study, we have studied 20 patients with MI (group1) and 10 voluntary healthy people as the normal control (group 2) for 10 months. Group1 just recieved routine drugs ( β -blockers) and aspirin, while group 2 received an extra vitamin E for 6 days. We collected 10 ml coagulated blood from patients and controls. After preparation of the platelet-rich plasma (PRP), xanthine oxidase and lipid peroxidase of platelets were detected. Data were analyzed by using SPSS16, paired T- test and ANOVA test.

 Results

 Findings showed that the administration of vitamin E along with aspirin after 6 days brought about a good antioxidant drugs effect as evidenced by the activity reduction of platelet xanthine oxidase (p< 0.001) and decrease of lipid peroxidase metabolite (p< 0.001).

 Conclusions:

 Using vitamin E along with the other β -blocker drugs would protect patients with MI from oxidant and further heart failure.