Impakt of Ozone on the Oxyge Affinity Blood Properties and Prooxidant–Antioxidant Balance under Effect of H<sub>2</sub>S-Generating System

Abstract

Hydrogen sulfide belongs to the group of signaling agents called gaseous transmitters and plays an important role in many physiological processes, in particular, in the realization of oxygen-dependent mechanisms. The aim of this study was to evaluate the significance of hydrogen sulfide in the effect of ozone on the oxygen affinity blood properties and the prooxidant-antioxidant balance in vitro experiment. Ozone (6 mg/L concentration) and drugs that affect the synthesis of hydrogen sulfide (propargylglycine, sodium hydrosulfide and its combination with nitroglycerin) were used. The use of propargylglycine, an inhibitor of the synthesis of hydrogen sulfide, leads to a decrease in the effect of ozone on the blood oxygen transport function (decrease in PO2, SO2, P50real). When sodium hydrosulfide is added, the effect of this gas on these parameters does not increase, but in its combination with nitroglycerin, the effect of ozone on the blood oxygen transport function increases. Propargylglycine does not affect the prooxidant-antioxidant balance under the conditions of the experiment, and donors of hydrogen sulfide and nitrogen monoxide increase the activity of catalase. Propargylglycine under the action of ozone leads to a decrease in the level of nitrate/nitrite, and sodium hydrosulfide increases their concentration. The combination of sodium hydrosulfide and nitroglycerin leads to the accumulation of hydrogen sulfide in the blood plasma.