Journal of Internal Medicine Concepts & Practice ›› 2025, Vol. 20 ›› Issue (04): 345-350.doi: 10.16138/j.1673-6087.2025.04.16

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Interaction between bile acids and gut microbiota and their role in Parkinson disease

LIU Shumenga, AI Penghuib, XIAO Qinb, YANG Xiaodongb()   

  1. a. Clinical Medical College, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
    b. Department of Neurology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
  • Received:2024-07-23 Online:2025-07-31 Published:2025-10-27

Abstract:

Bile acids are amphipathic molecules derived from cholesterol, which facilitate the absorption of lipids, and also serve as signaling molecules in regulating metabolic homeostasis and immune response. Bile acid is modified by intestinal flora, and on the other hand, it alters the composition of gut microbiota and exerts potential effects on the microbiota-gut-brain axis(MGBA). Through this bidirectional communication system, bile acid signaling homeostasis plays a modulatory role for maintaining the physiological function of nervous system. In recent years, increasing evidence indicates that the bile acid associated with dysbiosis in gut microbiota may be an early sign of Parkinson disease (PD), which triggered the exploration of new pathological mechanisms and diagnostic biomarkers for PD. This article reviews the relationship between abnormal bile acid metabolism and PD as well as its potential role in PD treatment from the perspective of interaction between bile acids and intestinal microorganism.

Key words: Bile acids, Gut microbiota, Parkinson disease

CLC Number: