Mechanism of inhibition of the glycolytic activity of the myocardium during the early postnatal period]

Reduction of the activity of glycolysis and glycogenolysis regularly observed in the developing cardiac muscle was not associated with reduction of the glycolytic system, but was due to the regulatory inhibition of the phosphofructokinase link in the glycolytic link. This was indicated by a 4.5-fold increase in the rat heart of the ratio of the active masses of the phosphofructokinase reaction in the course of 2 weeks of the postnatal development.