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http://dx.doi.org/10.5338/KJEA.2003.22.2.094

The Effects of Selenium on Cadmium-Induced Toxicity and Lipid Peroxidation in Rat Hepatocyte Primary Culture  

Rhim, Tae-Jin (Department of Biotechnology, College of Life Science and Natural Resources, Sangji University)
Publication Information
Korean Journal of Environmental Agriculture / v.22, no.2, 2003 , pp. 94-99 More about this Journal
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 $500\;{\mu}M$) 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 $50\;{\mu}M$. In Experiment 2, primary cultures of rat hepatocytes were incubated for 6hr in the presence of 100\;{\mu}M$ 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.
Keywords
cadmium; selenium; antioxidative; hepatoprotective; rat hepatocyte;
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