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Updated: Aug 17, 2025

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Published on: June 2, 2022
The microbiota-gut-brain axis in pathogenesis of depression: A narrative review
Hui Yao1, Dalin Zhang2, Hao Yu3
1Department of Forensic Pathology, China Medical University School of Forensic Medicine, Shenyang, Liaoning, 110122, P. R. China; Key Laboratory of Forensic Bio-evidence Sciences, Shenyang, Liaoning, 110122, P. R. China; China Medical University Center of Forensic Investigation, Shenyang, Liaoning, 110122, P. R. China; Faculty of Forensic Medicine, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, Guangdong, 510080, P. R. China.
Abstract:
The microbiota-gut-brain axis is a bidirectional regulatory pathway between the brain and the gastrointestinal tract, which plays an important role in maintain homeostasis. Gut microbiota could influence the behavior, cognition, stress response and others via the axis. Depression is a complex psychiatric disease, giving rise to heavy social health and economic burden. In recent years, studies have shown that the gut microbiota are closely linked to the pathophysiological processes of depression. In this article, the interaction and its underlying mechanisms between depression and gut microbiota were summarized.
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