41 patients with dilated cardiomyopathy (DCMP), 62 patients with infectious allergic myocarditis (IAMC) and 36 patients with myocarditis cardiosclerosis (MCCS) were examined cytochemically. This involved assessment of the activity of alpha-glycerophosphate- and glucose 6-phosphate dehydrogenases, nicotinamide adenine dinucleotide- and nicotinamide adenine dinucleotide phosphate diaphorases, NBT test parameters, measurements of endogenic cytochrome C and cation protein, activity of acid and alkaline phosphatase, lymphocyte peroxidase and that in peripheral blood polymorphonuclear leukocytes. The findings of the study confirmed a close functional and metabolic relation of the above cytochemical indices. This allows their introduction as additional laboratory criteria in differential diagnosis of inflammatory and idiopathic myocardial affections.
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