In 129 young men with high normal blood pressure (BP) and 1st degree arterial hypertension and in 15 healthy young men the content of catecholamines in erythrocytes using cytochemical methods and condition of thiol-disulphide system (TDS) were estimated depending on type of left ventricle remodeling (LVR). Interrelation of catecholamine deposition function in erythrocytes and condition of TDS underlines the effect on vegetative nervous system for regulation of acid-base balance in an organism and mechanism of pathologic structural changes in the left ventricle in young men with high normal BP and 1st degree arterial hypertension.