[The effect of middle-molecular ninhydrin-positive substances isolated from the rat myocardium on rat serum arylamidase activity after administration of ethanol].

Protein-free extract from the myocardium of control rats and the majority of its fractions were found to stimulate arylamidase activity. Ethanol administration to rats for 1, 3 or 7 weeks increased the amount of fractions which displayed an inhibitory effect. The observed changes were probably due to enhanced protein degradation and/or to decreased amino acid incorporation into proteins following ethanol administration. (Tab. 4, Fig. 2, Ref. 19.).