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Dietary L-cysteine improves the antioxidative potential and lipid metabolism in rats fed a normal diet.

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      Abstract

      L-cysteine works as a precursor of the antioxidant, glutathione. We investigated the effects of L-cysteine (1% and 2%) on lipid metabolism and the antioxidative system in rats fed a normal diet. Administering L-cysteine dependently decreased the food intake, fat mass weight and body weight dose. Dietary L-cysteine also decreased the triglyceride levels in the serum and liver. However, there were no significant differences in the hepatic TBARS and glutathione (GSH) levels among the groups. The activities of catalase and glutathione reductase in the rats receiving 2% L-cysteine were significantly higher (p<0.05) than in the control rats. These results suggest that dietary L-cysteine dose-dependently affected the antioxidative enzyme activities, and the lipid levels in the serum and liver which might be related to the reduced food intake.

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      Affiliations
      [1 ] Department of Food Science, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido 080-8555, Japan.
      Journal
      Biosci. Biotechnol. Biochem.
      Bioscience, biotechnology, and biochemistry
      Japan Society for Bioscience, Biotechnology, and Agrochemistry
      1347-6947
      0916-8451
      2013
      : 77
      : 7
      23832363
      DN/JST.JSTAGE/bbb/130083
      10.1271/bbb.130083

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