[Various characteristics of protein-synthesizing apparatus of the myocardium during total ischemia].

A decrease in the rate of protein synthesis as well as an increase in the synthesis time of "medium-size" polypeptide chain were detected in total rabbit myocardium ischemia, which were evaluated using rabbit myocardium cell-free protein-synthesizing systems. The decrease in the synthesis rate of total myocardial proteins was shown to depend on the state of ribosomes function. Redistribution in the pools of membrane-bound and free ribosomes as well as a decrease of polyribosomes amount in total pool of myocardial ribosomes were observed under conditions of total myocardial ischemia.