Effects of fabomatisol under lead intoxication in rat experiment

The conducted study indicates the priority use of the drug fabomatizole to protect living systems from the negative effects of lead acetate.Aim: To study the mechanisms of fabomatizole effect on the nature of changes in redox reactions, NO-forming function of the endothelium, cholesterol metabolism and functional parameters in rats with lead intoxication.Material and Methods. The study was carried out on 60 Wistar rats. Lead intoxication was induced by intramuscular administration of lead acetate at a dose of 5 mg/kg of animal weight for a month. At the end of the intoxication period, Fabomatizol was administered at a dose of 10 mg/kg for a month. Next, blood and tissue samples were taken from rats to determine the activity of oxidative, antioxidant, enzymatic systems, nitric oxide metabolism, and blood lipid spectrum.Results. The data obtained showed that intramuscular administration of fabomatisol in case of lead intoxication has an antioxidant effect and inhibits lipid peroxidation (LPO) activity. Under the influence of fabomatizol, nitric oxide metabolism andtotal nitric oxide metabolites (NOx) content significantly increased, and a negative correlation was found between the malondialdehyde level, superoxide dismutase activity and NOx. At the same time, the study found a decrease in the expression level of eNOS as the cause of a reduced concentration of NOx in the blood. L-arginine availability for eNOS was disturbed by atherogenic low density lipoprotein (LDL). Treatment with fabomatizol against the background of lead intoxication caused a decrease in total cholesterol, LDL cholesterol and an increase inhigh density lipoprotein cholesterol. By inhibiting lipid peroxidation in the cells of the renal and hepatic tissues, fabomatizol contributed to the restoration of lipid-protein interactions and the functional activity of Na and K-activated ATPase in the renal interstitium. Simultaneously, there is an activation of Na,K-ATP-ase in the hepatocyte and a decrease in the level of organ-specific enzymes in the blood plasma.Conclusion. The results obtained are evidence of the antioxidant properties of fabomatisol in lead intoxication, its ability to induce the activity of antioxidant system (AOS enzymes, stimulate the NO-forming function of the endothelium, NOx production and the activity of the membrane enzyme - Na,K-ATP-ase in the renal and hepatic tissues and reduce the level of organ-specific enzymes in blood plasma.