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Hepatoprotective Effects of Potato Peptide against D-Galactosamineinduced Liver Injury in Rats
Kiyoshi Ohba,Kyu-Ho Han,Ruvini Liyanage,Megumi Nirei,Naoto Hashimoto,Ken-ichiro Shimada,Mitsuo Sekikawa,Keiko Sasaki,Chi-Ho Lee,Michihiro Fukushima 한국식품과학회 2008 Food Science and Biotechnology Vol.17 No.6
The effect of some peptides on hepatoprotection and cecal fermentation against D-galactosamine (GalN)-treated rats was studied. In acute hepatic injury tests, serum alanine aminotransferase (ALT), aspartate aminotranferase (AST), and lactic dehydrogenase (LDH) activities were remarkably increased after injection of GalN. However, potato and soybean peptides significantly decreased GalN-induced alterations of serum ALT and AST activities. Hepatic thiobarbituric acidreactive substance (TBARS) concentration in GalN-treated groups fed potato and soybean peptides was significantly lower than that in GalN-treated control group. Hepatic glutathione level in the GalN-treated group fed potato peptide was significantly higher than that in GalN-treated control group. Furthermore, cecal Lactobacillus level in GalN-treated groups fed potato and soybean peptides was significantly higher than that in GalN-treated control group, and cecal short-chain fatty acid concentrations in GalN-treated group fed potato peptide were significantly higher than in GalN-treated control group. These results indicate that potato peptide may improve the cecal fermentation and prevent the GalN-induced liver damage in rats.