Effect of the Natural Cytokine Complex on the Structure and Metabolism of Contractile Myocardium Normally and under Increased Hemodynamic Load

Resumo

Effect of natural complex of cytokines with activity of IL-1, IL-2, IL-6, TNF, MIF, GTFβ on the structure and metabolism of contractile ventricular cardiomyocytes was assessed in the control and under conditions of acute experimental aortic stenosis. Systemic administration of the complex in the control had no significant effect on myocardial morphology with low number of damaged cardiomyocytes and low degree of structural damage. Administration of the cytokine complex against the background of aortic stenosis did not exert any additional alterative effect on cardiomyocytes, structural damage of contractual nature was moderate. Systemic administration of the natural cytokine complex had a pronounced inhibitory effect on metabolic processes in the myocardium of both ventricles both in the control and against the background of increased hemodynamic load. In cardiomyocytes, glycolysis and citric acid cycle were slowed down, oxidation of free fatty acids and their metabolic products was inhibited as well as shuttle mechanisms and biosynthetic reactions. Inhibition of energy-producing processes is the cause of the lack of the contractile function energy supply and can worsen the course of cardiovascular diseases and increase the risk of their complications in conditions, accompanied by increased blood cytokine level.