the natural antioxidant beta-carotene which , unlike phenol antioxidants such as dibunol and spn-6 , is capable of exhibiting antioxidative properties under low partial oxygen pressure ( ischemia ) , has been found to increase the activity of antioxidative enzymes in the intact and infarct myocardium and to greatly exert a more antinecrotic action when given orally in a dose of 20 mg/kg in models of rat coronary-occlusion myocardial infarction than the phenol antioxidants mentioned above .
C0022116
ischemia
C0021308
infarct