Frontiers in Nutrition (Jul 2022)

The Role of Branched-Chain Amino Acids and Branched-Chain α-Keto Acid Dehydrogenase Kinase in Metabolic Disorders

  • Chuang Du,
  • Chuang Du,
  • Chuang Du,
  • Chuang Du,
  • Wen-Jie Liu,
  • Wen-Jie Liu,
  • Wen-Jie Liu,
  • Jing Yang,
  • Jing Yang,
  • Jing Yang,
  • Shan-Shan Zhao,
  • Shan-Shan Zhao,
  • Shan-Shan Zhao,
  • Shan-Shan Zhao,
  • Hui-Xin Liu,
  • Hui-Xin Liu,
  • Hui-Xin Liu

DOI
https://doi.org/10.3389/fnut.2022.932670
Journal volume & issue
Vol. 9

Abstract

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Branched-chain amino acids (BCAAs), composed of leucine, isoleucine, and valine, are important essential amino acids in human physiology. Decades of studies have revealed their roles in protein synthesis, regulating neurotransmitter synthesis, and the mechanistic target of rapamycin (mTOR). BCAAs are found to be related to many metabolic disorders, such as insulin resistance, obesity, and heart failure. Also, many diseases are related to the alteration of the BCAA catabolism enzyme branched-chain α-keto acid dehydrogenase kinase (BCKDK), including maple syrup urine disease, human autism with epilepsy, and so on. In this review, diseases and the corresponding therapies are discussed after the introduction of the catabolism and detection methods of BCAAs and BCKDK. Also, the interaction between microbiota and BCAAs is highlighted.

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