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a Department of Medical Biochemistry, Dr. Alagappa Mudaliar Post Graduate Institute of Basic Medical Sciences, University of Madras, Taramani, India
C. Panneerselvam, Department of Medical Biochemistry, Dr. Alagappa Mudaliar Post Graduate Institute of Basic Medical Sciences, University of Madras, Taramani-113, India E-mail: julietibms{at}yahoo.com.
Decision Editor: John A. Faulkner, PhD
The effect of L-carnitine on lipid peroxidation and enzymatic antioxidants, such as superoxide dismutase, catalase, and glutathione peroxidase, was evaluated in brain regions of young and old rats. In all brain regions except the hypothalamus, lipid peroxidation was higher for old rats than for young control rats. The activity of superoxide dismutase, glutathione peroxidase, and catalase was lower in the striatum, cerebral cortex, and hippocampus, but no difference was observed in the hypothalamus and cerebellum. L-Carnitine administration (intraperitoneally) prevented thiobarbituric acid-reactive substance formation in the cerebral cortex, cerebellum, hypothalamus, hippocampus, and striatum of 24-month-old rats. Administration of L-carnitine reversed the age-associated changes in a duration-dependent manner. Results suggest that the neuroprotective effect on the brains in old rats was achieved by the elevation of antioxidants with L-carnitine.
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