EFFECTS OF CYANIDE ON SOME ENZYME ACTIVITIES AND LIPID PEROXIDATION IN SOME TISSUES OF CARP (Cyprinus carpio)

Abstract

In this study, the changes in the catalase, superoxide dismutase, carbonic anhydrase activities, and the levels of malondialdehyde in the muscle, liver, gill, skin, brain, and intestinal tissues of carps (Cyprinus carpio), in which 0.1 mg/L and 0.2 mg/L concentrations cyanide were added, were investigated. It was determined that the catalase, superoxide dismutase, and carbonic anhydrase activities of fish exposed to cyanide were inhibited in some tissues and increased in some tissues. Especially in 15-day experiments statistically significant decreases were observed in enzyme activities. It was observed that malondialdehyde levels, which are one of the important markers of cell damage of tissues generally increased with cyanide exposure. In this study, malondialdehyde levels increased statistically significant in the liver and intestinal tissues in the 3-day experiment and the muscle tissue in the 15-day experiment.