Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: EC:1.3.5.1 (succinate dehydrogenase)
 8,177 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

The activity of human myocardial enzymes in sudden coronary death (SCD) was quantitatively histochemically examined. The activity of succinate dehydrogenase (SDH), lactate dehydrogenase (LDH), beta-oxybutyrate dehydrogenase (beta-OBDH), alpha-glycerolphosphate dehydrogenase (alpha-GPDH), NAD-diaphorase (NAD-ase), and glucose-6-phosphate dehydrogenase (G-6-PDH) was measured on prompt autopsies (up to 3 hours of death onset). beta-OBDH and LDH showed an increase in activity in the myocardium from the subjects who had suddenly died from coronary heart disease without evident changes in the heart. In SCD in the presence of small cardiosclerosis, the activity of the enzymes characterizing the major processes of energy generation was also enhanced, which was caused by moderately severe myocardial hypertrophy. In the myocardium from the subjects who had died from coronary heart disease in the presence of large postinfarction cardiosclerosis, the activity of the enzymes was directly related to the degree of myocardial hypertrophy and the signs of chronic heart failure. As myocardial hypertrophy progressed, the enzymatic activity rose, but there were signs of chronic heart failure, it fell. The findings suggest that the changes in myocardial enzymatic activity in SCD are heterogeneous and associated with the type of prior abnormalities in the cardiovascular system.
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PMID:[Disorders of myocardial metabolism in sudden coronary death in the presence of coronary atherosclerosis: findings of quantitative histoenzymologic studies]. 221 37

Hearts of 38 men dying suddenly of acute coronary insufficiency and autopsied within 3 hours after death were examined. Foci of acute ischemic injuries in different parts of the myocardium were studied by histochemical methods for which the activity of succinate dehydrogenase and phosphorylase were determined. Early ischemic lesions in the myocardium were found in 22 fatalities, of them 5 had acute myocardial infarction, in 9 foci of ischemia were combined with the presence of postinfarction scars and fine focal cardiosclerosis, in 8 cases foci of early ischemia were the only changes in the myocardium. The majority of the decreased had stenosing atherosclerosis of the coronary arteries. Localization of ischemia foci in the myocardium did not always correspond to the severity of stenosing or the presence of thrombosis of the artery supplying the corresponding parts of the heart muscle. No foci of ischemia in the myocardium were found in 16 decreased who also had quite marked coronary atherosclerosis.
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PMID:[Early ischemic injuries of the myocardium in sudden cardiac death]. 742 69