[Effect of enalapril maleate and lozartan on the size of experimental myocardial infarction, hemoglobin affinity to oxygen and various parameters of lipid peroxidation].

The intravenous injections of enalapril maleate (0.1 and 0.5 mg/kg) and losartan (0.5 and 2.5 mg/kg) produced a 22-32% decrease in the size of myocardial infarction in rats with coronary ligation. This was accompanied by inhibition of the lipid peroxidation as revealed by the MDA test and Fe2+ induced chemiluminescence. Both drugs also increased the oxygen affinity of hemoglobin in the P50 test in vitro. Enalapril did not significantly alter the MDA level and superoxide dismutase (SOD) activity in the whole human blood. In contrast, losartan reliably inhibited SOD activity.