Cited by 239Gut microbiota and healthGastrointestinal motility and disordersBarrier Structure and Function Studies

The intestinal barrier in disorders of the central nervous system

Open access
Pellegrini, Carolina, Fornai, Matteo, D'Antongiovanni, Vanessa, Antonioli, Luca, Bernardini, Nunzia, Derkinderen, Pascal·2023·The Lancet Gastroenterology & Hepatology

Abstract

The intestinal barrier, which primarily consists of a mucus layer, an epithelial barrier, and a gut vascular barrier, has a crucial role in health and disease by facilitating nutrient absorption and preventing the entry of pathogens. The intestinal barrier is in close contact with gut microbiota on its luminal side and with enteric neurons and glial cells on its tissue side. Mounting evidence now suggests that the intestinal barrier is compromised not only in digestive disorders, but also in disorders of the central nervous system (CNS), such as Parkinson's disease, autism spectrum disorder, depression, multiple sclerosis, and Alzheimer's disease. After providing an overview of the structure and functions of the intestinal barrier, we review existing preclinical and clinical studies supporting the notion that intestinal barrier dysfunction is present in neurological, neurodevelopmental, and psychiatric disorders. On the basis of this evidence, we discuss the mechanisms that possibly link gut barrier dysfunction and CNS disorders and the potential impact that evaluating enteric barriers in brain disorders could have on clinical practice, in terms of novel diagnostic and therapeutic strategies, in the near future.

Integrity signals

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Crossref · 10.1016/s2468-1253(22)00241-2

Cites

124 of 124 references verified0 citation errors · 0 not checkable

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  • During aging, the intestinal barrier undergoes progressive breakdown, facilitating the translocation of pro-inflammatory gut microbiota-derived metabolites and pathogenic bacterial products into the bloodstream.

    “During aging, the intestinal barrier undergoes progressive breakdown, which facilitates the translocation of pro-inflammatory gut microbiota-derived metabolites and pathogenic bacterial products into the bloodstream”
  • Increased intestinal permeability facilitates the translocation of bacteria and their byproducts into the mucosa and bloodstream, leading to aberrant activation of intestinal and circulating immune and inflammatory cells, resulting in systemic inflammation, neuroinflammation, and neurodegeneration.

    “the increased intestinal permeability facilitates the translocation of bacteria and their byproducts into the mucosa and bloodstream. This leads to aberrant activation of the intestinal and circulating immune and inflammatory cells, resulting in systemic inflammation, neuroinflammation, and neurodegeneration.”
  • This process triggers elevated systemic inflammatory responses that gradually impair BBB integrity, resulting in CNS inflammation and neurodegeneration.

    “This process triggers elevated systemic inflammatory responses that gradually impair BBB integrity, resulting in CNS inflammation and neurodegeneration.”

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Authors
Pellegrini, C., Fornai, M., D'Antongiovanni, V., Antonioli, L., Bernardini, N., & Derkinderen, P.
Affiliations
  • University of Pisa (IT)
  • Inserm (FR)
Venue
The Lancet Gastroenterology & Hepatology
Publisher
Elsevier BV
Published
2023-01
Volume
8
Issue
1
Pages
66-80
ISSN
  • 2468-1156 (ISSN-L)
  • 2468-1253
OpenAlex
W4308158341
Cited by
239
References
124
Citations by year
2026: 63 · 2025: 89 · 2024: 54 · 2023: 32 · 2022: 1
FWCI
4.58
Type
journal article
Language
en
Open access
Locations
  • The Lancet. Gastroenterology & hepatology (publishedVersion)
  • PubMed (publishedVersion)
  • HAL (submittedVersion, other-oa)
  • CINECA IRIS Institutial research information system (University of Pisa) (submittedVersion)
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 › Neurology › Barrier Structure and Function Studies
Keywords
intestinal barrier, intestinal barrier dysfunction, central nervous system disorders, Parkinson's disease, autism spectrum disorder, depression, multiple sclerosis, Alzheimer's disease, gut microbiota, enteric neurons, glial cells, gut-brain axis, neurodevelopmental disorders, mental illness, diagnostic biomarkers, treatment options
MeSH terms
Autism Spectrum Disorder, Gastrointestinal Microbiome, Central Nervous System, Humans, Intestinal Diseases

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