Cited by 555Gut microbiota and healthGastrointestinal motility and disordersRegulation of Appetite and Obesity

The Gut–Brain Axis and the Microbiome: Mechanisms and Clinical Implications

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Osadchiy, Vadim, Martin, Clair R., Mayer, Emeran A.·2019·Clinical Gastroenterology and Hepatology

Abstract

Background & aims Based largely on results from preclinical studies, the concept of a brain gut microbiome axis has been established, mediating bidirectional communication between the gut, its microbiome, and the nervous system. Limited data obtained in human beings suggest that alterations in these interactions may play a role in several brain gut disorders.Methods We reviewed the preclinical and clinical literature related to the topic of brain gut microbiome interactions.Results Well-characterized bidirectional communication channels, involving neural, endocrine, and inflammatory mechanisms, exist between the gut and the brain. Communication through these channels may be modulated by variations in the permeability of the intestinal wall and the blood-brain barrier. Brain gut microbiome interactions are programmed during the first 3 years of life, including the prenatal period, but can be modulated by diet, medications, and stress throughout life. Based on correlational studies, alterations in these interactions have been implicated in the regulation of food intake, obesity, and in irritable bowel syndrome, even though causality remains to be established.Conclusions Targets within the brain gut microbiome axis have the potential to become targets for novel drug development for brain gut disorders.

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  • Many psychobiotics are being tested to identify possible therapeutic benefits.

    “At the moment, many psychobiotics, being them prebiotics, probiotics, postbiotics, and even single molecules involved in the gut microbial signaling, are being tested to identify any possible therapeutic benefits [116,120].”
  • Probiotics can affect the CNS by regulating the intestinal flora and preventing mental diseases through the gut-brain axis.

    “several research findings have shown that probiotics can affect the CNS by regulating the intestinal flora and preventing mental diseases through the gut–brain axis [71,72,73].”

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Authors
Osadchiy, V., Martin, C. R., & Mayer, E. A.
Affiliations
University of California, Los Angeles (US)
Corresponding author
Mayer, Emeran A.
Venue
Clinical Gastroenterology and Hepatology
Publisher
Elsevier BV
Published
2019-01
Volume
17
Issue
2
Pages
322-332
ISSN
1542-3565 (ISSN-L)
OpenAlex
W2895386130
Cited by
555
References
135
Citations by year
2026: 59 · 2025: 85 · 2024: 98 · 2023: 95 · 2022: 97 · 2021: 70 · 2020: 35 · 2019: 14 · 2018: 2
FWCI
3.36
Type
journal article
Language
en
Open access
Locations
  • Clinical Gastroenterology and Hepatology (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • eScholarship (California Digital Library) (submittedVersion)
Funders
National Institute of Diabetes and Digestive and Kidney Diseases (DK048351, DK064539, DK096606)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gut microbiota and health
  • Health Sciences › Medicine › Gastroenterology › Gastrointestinal motility and disorders
  • Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Regulation of Appetite and Obesity
Keywords
gut-brain axis, gut microbiota, two-way communication, intestinal permeability, blood-brain barrier, neuroinflammation, hormone signaling, developmental programming, diet, stress, food intake regulation, obesity, irritable bowel syndrome, therapeutic target
MeSH terms
Gastrointestinal Microbiome, Host Microbial Interactions, Biological Factors, Brain, Humans, Gastrointestinal Tract, Microbiota

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