랫드 간세포 일차배양에서 셀레늄이 카드뮴에 의해 유도된 독성 및 지질과산화에 미치는 영향 = Originals : The Effects of Selenium on Cadmium-Induced Toxicity and Lipid Peroxidation in Rat Hepatocyte Primary Culture

다국어 초록 (Multilingual Abstract)

The objective of present study was to investigate the antioxidative and hepatoprotective effects of selenium on cadmium-induced toxicity and lipid peroxidation in rat hepatocyte primary culture. To do this, two separate experiments were conducted. In Experiment 1, primary cultures of rat hepatocytes were incubated for 6 hr in the presence of various concentrations (1, 10, 50, 100, and 500μM) of cadmium chloride. Cytotoxicity and lipid peroxidation were evaluated using the MTT assay and TBARS assay, respectively. Antioxidative and hepatoprotective effects were determined by measuring the activity of GOT and GSH-Px, respectively. Cell viability was reduced and lipid peroxidation was increased by cadmium in dose-dependent manners. There was significantly negative correlation (r=-0.943, p<0.01) between cell viability and lipid peroxidation. GOT activity was increased and GSH-Px activity was decreased by cadmium at the concentration of 50 μM. In Experiment 2, primary cultures of rat hepatocytes were incubated for 6 hr in the presence of 100 of cadmium chloride and various concentrations (0.01, 0.1 and 1 ppm) of sodium selenite to assess the effect of selenium on cadmium-induced toxicity and lipid peroxidation. Cell viability and GSH-PX activity were increased by sodium selenite at the concentration of 1 ppm Whereas, lipid peroxidation and GOT activity were reduced by 0.1 ppm of sodium selenite. These results demonstrate that selenium has an antioxidative and hepatoprotective potentials against cadmium.