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Article

Effects of Fish Meat-derived Peptide and Dipeptides on Dexamethasone-induced Fatigue in Mice

1Department of Biopharmaceutics and Analytical Science, Hoshi University, 2-4-41 Ebara, Shinagawa-ku, Tokyo 142-5501, Japan

2Department of Biomolecular Pharmacology, Hoshi University, 2-4-41 Ebara, Shinagawa-ku, Tokyo 142-5501, Japan


Journal of Food and Nutrition Research. 2019, Vol. 7 No. 12, 821-826
DOI: 10.12691/jfnr-7-12-2
Copyright © 2019 Science and Education Publishing

Cite this paper:
Yusuke Iwasaki, Hiroyasu Sakai, Maho Asami, Satoko Kitora, Hiroaki Naito, Risako Kon, Nobutomo Ikarashi, Junzo Kamei. Effects of Fish Meat-derived Peptide and Dipeptides on Dexamethasone-induced Fatigue in Mice. Journal of Food and Nutrition Research. 2019; 7(12):821-826. doi: 10.12691/jfnr-7-12-2.

Correspondence to: Junzo  Kamei, Department of Biopharmaceutics and Analytical Science, Hoshi University, 2-4-41 Ebara, Shinagawa-ku, Tokyo 142-5501, Japan. Email: kamei@hoshi.ac.jp

Abstract

In patients with inflammatory diseases, exogenous glucocorticoids have become the most common cause of drug-induced muscle wasting. In this study, we showed that isoleucine-arginine (IR) and arginine-isoleucine (RI) are the main dipeptides with antioxidant activity in fish meat-derived peptide extract (FMDP). To investigate the anti-fatigue effect of FMDP and the two dipeptides (IR or RI), dexamethasone (DEX)-treated mice performed a weighted forced swimming test. Despite no change in body weight, the shortened swim time after DEX administration returned to baseline levels following the administration of FMDP, IR, and RI. However, the swim time of naive mice cannot be extended with the administration of FMDP, IR, or RI. Our data suggest that FMDP, IR, and RI may have beneficial effects on DEX-induced fatigue in mice. Nevertheless, further research is required to determine the mechanism through which FMDP reduces fatigue.

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