Succinic dehydrogenase activity of the myocardium in experimental atherosclerosis

The activity of succinic dehydrogenase (SDH) in the myocardium of rabbits with experimental atherosclerosis was investigated in the electron microscope from the second to the 16th week of the experiment. An increase in the number of mitochondria in the heart muscle was noted in the second month. From the fourth week SDH activity did not change in the mitochondria, whereas a decrease of SDH was observed beginning in the eighth week of the experiment.