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Effects of β-carotene on cell viability and antioxidant status of hepatocytes from chronically ethanol-fed rats

Published online by Cambridge University Press:  09 March 2007

Suh-Ching Yang
School of Nutrition and Health Sciences, Taipei Medical University, 250 Wu-Hsin Street, Taipei 110, Taiwan, Republic of China
Chi-Chang Huang
School of Nutrition and Health Sciences, Taipei Medical University, 250 Wu-Hsin Street, Taipei 110, Taiwan, Republic of China
Jan-Show Chu
Department of Pathology, Taipei Medical University, Taipei, Taiwan, Republic of China
Jiun-Rong Chen*
School of Nutrition and Health Sciences, Taipei Medical University, 250 Wu-Hsin Street, Taipei 110, Taiwan, Republic of China
*Corresponding author: fax +886 2 2737 3112, email
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The purpose of the present study was to evaluate the effects of β-carotene on the cell viability and antioxidant status of hepatocytes from chronically ethanol-fed rats. Rats in the ethanol group were given an ethanol-containing liquid diet that provided 36% of total energy as ethanol, while rats in the control group were fed an isoenergetic diet without ethanol. After 4 weeks, hepatocytes were taken out and cultured for 24 h. Hepatocytes from the rats in the control and ethanol groups were cultured in medium without (HC, HE) or with β-carotene (HC+B, HE+B). The results showed that lactate dehydrogenase leakage was significantly increased in the HE compared with that in the HC group. However, lactate dehydrogenase leakage of the HE+B group was similar to that of the HC group. When compared with the HC group, activities of glutathione peroxidase and catalase in the HE group were significantly decreased by 54 and 31%, respectively. Catalase activity in the HE+B group was significantly increased by 61% compared with that in the HE group. However, activities of glutathione reductase and superoxide dismutase showed no difference among the groups. The level of glutathione in the HC+B and HE+B groups was significantly increased to 155 and 143% compared with those in the HC and HE groups, respectively. The concentration of lipid peroxides showed no difference among the groups. The present results demonstrate that β-carotene improved the cell viability of hepatocytes, and increased catalase activities and glutathione levels in hepatocytes from chronically ethanol-fed rats.

Research Article
Copyright © The Nutrition Society 2004


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