HEMODYNAMIC CHANGES IN NICKEL INTOXICATION AND THEIR EXPERIMENTAL CORRECTION WITH ORGANIC SELENIUM AND SMALL DOSES OF ZINC

The purpose of the study is to investigate the effect of organic selenium and low doses of zinc on nickel intoxication. Selenium and zinc were administered once daily at a dose of 4 and 1 mg/ kg. Nickel chloride (5 mg/kg) was administered intragastrically using a probe, daily for one month. At the end of the experiment time (30 days), the main parameters of systemic hemodynamics were determined. The arterial blood pressure from the femoral artery was measured and the mean (MAP) was calculated. Cardiac output was determined by thermal dilution, heart rate (HR) was recorded; cardiac index, shock index and specific peripheral vascular resistance were calculated using special formulas. Our findings showed that nickel leads to significant disruptions in hemodynamics and heart function of rats, manifested in an increase in MAP, a change in heart rate, a decrease in systolic output. The introduction of selenium or small doses of zinc in rats exposed to nickel, produced a noticeable decrease in the cardiotoxic effects of this metal. There was also a decrease in the hypertensive effect of the metal. Thus, it has been established that antioxidants selenium and zinc can effectively reduce nickel toxicity.