N-carbamoyl-L-glutamate plus L-arginine can protect ammonia intoxication in rats with reduced functional liver mass.
Lee, JH; Kim, WH; Cho, H; Kwak, YS; Kim, S; Paik, WK
Biochemical and biophysical research communications, 248(2):391-394, 1998
Biochemical and biophysical research communications
We previously reported the protective effect of N-carbamoyl-L-glutamate plus L-arginine in rats given a lethal dose (LD99.9) of ammonium acetate (Kim, S. et al., Proc. Natl. Acad. Sci. 69, 3530-3533, 1971; ref.1). The present study was undertaken to find out whether the same compounds could also be effective even after the functional mass of the liver was significantly reduced. Thus, the protective effect of these compounds in 70% partial hepatectomized rats following the injection of sublethal dose of ammonium acetate was assessed. The mixture could significantly decrease blood ammonia level compared with PBS-injected control group. In addition, abnormal behaviors observed in the control rats were significantly improved. The protective effect on the behavioral change seemed to be closely related with their effect on blood ammonia level, showing a strong correlation between the blood ammonia level and the behavioral score. The findings provide a rational basis for the clinical use of N-carbamoyl-L-glutamate plus L-arginine in the prevention and treatment of hyperammonemia encountered in liver diseases.
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