• Neuroscience · Sep 2024

    Review

    L-Cysteine: A promising nutritional supplement for alleviating anxiety disorders.

    • Rui-Xia Liu, Da-Ke Song, Ying-Ying Zhang, Heng-Xin Gong, Yu-Chen Jin, Xin-Shang Wang, Yong-Li Jiang, Yu-Xuan Yan, Bei-Ning Lu, Yu-Mei Wu, Min Wang, Xu-Bo Li, Kun Zhang, and Shui-Bing Liu.
    • College of Life Sciences, Northwest University, Xi'an 710069, China; Department of Pharmacology, School of Pharmacy, Fourth Military Medical University, Xi'an 710032, China.
    • Neuroscience. 2024 Sep 13; 555: 213221213-221.

    AbstractAnxiety disorders are prevalent chronic psychological disease with complex pathogenic mechanisms. Current anxiolytics have limited efficacy and numerous side effects in many anxiety patients, highlighting the urgent need for new therapies. Recent research has been focusing on nutritional supplements, particularly amino acids, as potential therapies for anxiety disorders. Among these, L-Cysteine plays a crucial role in various biological processes. L-Cysteine exhibits antioxidant properties that can enhance the antioxidant functions of the central nervous system (CNS). Furthermore, metabolites of L-cysteine, such as glutathione and hydrogen sulfide have been shown to alleviate anxiety through distinct molecular mechanisms. Long-term administration of L-Cysteine has anxiolytic, antidepressant, and memory-improving effects. L-Cysteine depletion can lead to increased oxidative stress in the brain. This review delves into the potential mechanisms of L-Cysteine and its main products, glutathione (GSH) and hydrogen sulfide (H2S) in the management of anxiety and related diseases.Copyright © 2024 International Brain Research Organization (IBRO). Published by Elsevier Inc. All rights reserved.

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