Branched-Chain Amino Acid Supplementation Reduces Oxidative Stress and Prolongs Survival in Rats with Advanced Liver Cirrhosis |
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| Authors: | Motoh Iwasa Yoshinao Kobayashi Rumi Mifuji-Moroka Nagisa Hara Hirohide Miyachi Ryosuke Sugimoto Hideaki Tanaka Naoki Fujita Esteban C Gabazza Yoshiyuki Takei |
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| Institution: | 1. Department of Gastroenterology and Hepatology, Mie University Graduate School of Medicine, Tsu, Japan.; 2. Center for Physical and Mental Health, Mie University Graduate School of Medicine, Tsu, Japan.; 3. Division of Dietary Service, Mie University School Hospital, Tsu, Japan.; 4. Department of Immunology, Mie University Graduate School of Medicine, Tsu, Japan.; CIMA. University of Navarra, Spain, |
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| Abstract: | Long-term supplementation with branched-chain amino acids (BCAA) is associated with prolonged survival and decreased frequency of development of hepatocellular carcinoma (HCC) in patients with liver cirrhosis. However, the pharmaceutical mechanism underlying this association is still unclear. We investigated whether continuous BCAA supplementation increases survival rate of rats exposed to a fibrogenic agent and influences the iron accumulation, oxidative stress, fibrosis, and gluconeogenesis in the liver. Further, the effects of BCAA on gluconeogenesis in cultured cells were also investigated. A significant improvement in cumulative survival was observed in BCAA-supplemented rats with advanced cirrhosis compared to untreated rats with cirrhosis (P<0.05). The prolonged survival due to BCAA supplementation was associated with reduction of iron contents, reactive oxygen species production and attenuated fibrosis in the liver. In addition, BCAA ameliorated glucose metabolism by forkhead box protein O1 pathway in the liver. BCAA prolongs survival in cirrhotic rats and this was likely the consequences of reduced iron accumulation, oxidative stress and fibrosis and improved glucose metabolism in the liver. |
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