Gut Microbiota-Derived Metabolites in Irritable Bowel Syndrome

Irritable bowel syndrome (IBS) is the most common functional bowel disorder worldwide and is associated with visceral hypersensitivity, gut motility, immunomodulation, gut microbiota alterations, and dysfunction of the brain-gut axis; however, its pathophysiology remains poorly understood. Gut micro...

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Published inFrontiers in cellular and infection microbiology Vol. 11; p. 729346
Main Authors Xiao, Lin, Liu, Qin, Luo, Mei, Xiong, Lishou
Format Journal Article
LanguageEnglish
Published Frontiers Media S.A 23.09.2021
Subjects
amino acids
bile acids
Cellular and Infection Microbiology
gut microbiota
irritable bowel syndrome
SCFAs
tryptophan
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Summary:Irritable bowel syndrome (IBS) is the most common functional bowel disorder worldwide and is associated with visceral hypersensitivity, gut motility, immunomodulation, gut microbiota alterations, and dysfunction of the brain-gut axis; however, its pathophysiology remains poorly understood. Gut microbiota and its metabolites are proposed as possible etiological factors of IBS. The aim of our study was to investigate specific types of microbiota-derived metabolites, especially bile acids, short-chain fatty acids, vitamins, amino acids, serotonin and hypoxanthine, which are all implicated in the pathogenesis of IBS. Metabolites-focused research has identified multiple microbial targets relevant to IBS patients, important roles of microbiota-derived metabolites in the development of IBS symptoms have been established. Thus, we provide an overview of gut microbiota and their metabolites on the different subtypes of IBS (constipation-predominant IBS-C, diarrhea-predominant IBS-D) and present controversial views regarding the role of microbiota in IBS.
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Reviewed by: Nicholas Zachos, Johns Hopkins University, United States; Jane Adair Mullaney, AgResearch Ltd, New Zealand
Edited by: Sarah C. Pearce, Agricultural Research Service (USDA), United States
These authors have contributed equally to this work and share first authorship
This article was submitted to Microbiome in Health and Disease, a section of the journal Frontiers in Cellular and Infection Microbiology
ISSN:2235-2988
2235-2988
DOI:10.3389/fcimb.2021.729346