Cited by 53Gut microbiota and healthGastrointestinal motility and disordersTryptophan and brain disorders

Gut Microbiome and Modulation of CNS Function

Osadchiy, Vadim, Martin, Clair R., Mayer, Emeran A.·2019·Comprehensive Physiology

Abstract

Preclinical evidence strongly suggests a role for the gut microbiome in modulating the host central nervous system function and behavior. Several communication channels have been identified that enable microbial signals to reach the brain and that enable the brain to influence gut microbial composition and function. In rodent models, endocrine, neural, and inflammatory signals generated by gut microbes can alter brain structure and function, while autonomic nervous system activity can affect the microbiome by modulating the intestinal environment and by directly regulating microbial behavior. The amount of information that reaches the brain is dynamically regulated by the blood-brain barrier and the intestinal barrier. In humans, associations between gut microbial composition and function and several brain disorders have been reported, and fecal microbial transplants from patient populations into gnotobiotic mice have resulted in the reproduction of homologous features in the recipient mice. However, in contrast to preclinical findings, there is little information about a causal role of the gut microbiome in modulating human central nervous system function and behavior. Longitudinal studies in large patient populations with therapeutic interventions are required to demonstrate such causality, which will provide the basis for future clinical trials. © 2020 American Physiological Society. Compr Physiol 10:57-72, 2020.

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Crossref · 10.1002/cphy.c180031

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191 of 191 references verified0 citation errors · 0 not checkable

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  • Enteroendocrine cells contain signaling molecules including ghrelin, NPY, PYY which can act locally on the vagus nerve or reach the CNS via systemic circulation.

    “Enteroendocrine cells (EECs) are interspersed in the gut epithelium and contain important signaling molecules, including key orexigenic (ghrelin) and anorexigenic (NPY, PYY) hormones which can act locally on the vagus nerve as neurotransmitters, or reach the CNS via the systemic circulation in an endocrine fashion [12].”
  • The gut microbiome interacts with the brain primarily through three interacting pathways: neuronal, endocrine, and immunoregulatory.

    “The gut microbiome has been shown to interact with the brain primarily through three interacting pathways, namely neuronal, endocrine, and immunoregulatory [12, 16].”
  • Indoxyl sulfate may play part in the pathophysiology of several brain disorders, including ASD, AD, and depression.

    “One such metabolite, indoxyl sulfate, may play part in the pathophysiology of several brain disorders, including ASD, AD, and depression [12].”
  • Metabolic endotoxemia results from a compromised gut barrier, allowing contacts between gut microbial cell wall components and Toll-like receptors on dendritic cells, or after translocation of intact microbes and activation of other cells in the gut-associated immune system.

    “As reviewed elsewhere [12], metabolic endotoxemia results from a compromised gut barrier (“leaky gut”), allowing contacts between gut microbial cell wall components and Toll-like receptors on dendritic cells, or after translocation of intact microbes and activation of other cells in the gut-associated immune system.”
  • The gut microbiome interacts with the brain in bidirectional ways using neural, inflammatory, and hormonal signalling pathways.

    “The gut microbiome interacts with the brain in bidirectional ways using neural, inflammatory, and hormonal signalling pathways.23”

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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
Comprehensive Physiology
Publisher
Wiley
Published
2019-12-18
Volume
10
Issue
1
Pages
57-72
ISSN
2040-4603 (ISSN-L)
OpenAlex
W2996661506
Cited by
53
References
191
Citations by year
2026: 1 · 2025: 3 · 2024: 10 · 2023: 13 · 2022: 10 · 2021: 10 · 2020: 6
Type
other
Language
en
Open access
closed
Locations
  • Comprehensive physiology (publishedVersion)
  • PubMed (publishedVersion)
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 › Biological Psychiatry › Tryptophan and brain disorders
Keywords
gut microbiota, central nervous system, gut-brain axis, neurobehavior, hormone signaling, neuronal signaling, inflammatory signaling, autonomic nervous system, blood-brain barrier, intestinal barrier, fecal microbiota transplantation, gnotobiotic mice, brain disorders, causality
MeSH terms
Gastrointestinal Microbiome, Animals, Autonomic Nervous System, Brain, Feeding Behavior, Gastrointestinal Motility, Humans, Obesity

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