Stress impairs murine intestinal barrier function: improvement by glucagon-like peptide-2
Abstract
Stress-induced intestinal barrier dysfunction may be involved in chronic intestinal disorders. Glucagon-like peptide-2 (GLP-2) is an intestinotrophic growth hormone that can rapidly improve intestinal epithelial barrier function. Here, we investigated whether mouse intestine is responsive to chronic psychological stress and whether pretreatment with GLP-2 can ameliorate stress-induced changes. Mice were subjected to water avoidance stress (WAS; 1 h/day for 10 days) with GLP-2 or saline administered 4 h before each WAS session. After the final stress period, the intestine was removed for assessment of physiological/morphological changes. Compared with controls (sham-stressed mice), stressed mice demonstrated enhanced ion secretion and permeability in the jejunum, ileum, and colon. In addition, increased numbers of bacteria were observed adhering to and/or penetrating the epithelium, associated with infiltration of mononuclear cells into the mucosa. GLP-2 treatment improved intestinal barrier function in stressed mice and ameliorated other aspects of impaired host defense. Our study extends previous findings in rats of stress-induced intestinal dysfunction and provides insights into potential novel therapeutics.
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Animal models of chronic stress demonstrate altered intestinal physiology and gut microbiota composition, with an increased secretory state and permeability.
“Animal models of chronic stress demonstrate altered intestinal physiology and GM composition, with an increased secretory state and permeability (352–355).”
From Signalling cognition: The gut microbiota and hypothalamic-pituitary-adrenal axis (2023) · cites this paper as [353]
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- Authors
- Cameron, H. L., & Perdue, M. H.
- Affiliations
- McMaster University (CA)
- ORCID
- Cameron, Heather L.
- Venue
- The Journal of Pharmacology and Experimental Therapeutics
- Publisher
- Elsevier BV
- Published
- 2005-07
- Volume
- 314
- Issue
- 1
- Pages
- 214-220
- ISSN
- 0022-3565 (ISSN-L)
- OpenAlex
- W2032605955
- Cited by
- 128
- References
- 34
- Citations by year
- 2026: 2 · 2025: 4 · 2024: 6 · 2023: 10 · 2022: 3 · 2021: 6 · 2020: 7 · 2019: 7 · 2018: 5 · 2017: 8 · 2016: 5 · 2015: 7 · 2014: 6 · 2013: 4 · 2012: 9
- FWCI
- 5.35
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Journal of Pharmacology and Experimental Therapeutics (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Health Sciences › Medicine › Gastroenterology › Gastrointestinal motility and disorders
- Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuropeptides and Animal Physiology
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Inflammatory Bowel Disease
- Keywords
- psychological stress, intestinal barrier function, glucagon-like peptide-2, water avoidance stress, intestinal permeability, ion secretion, intestinal epithelium, bacterial translocation, mononuclear cell infiltration, intestinal mucosa
- MeSH terms
- Animals, Bacterial Infections, Body Weight, Colon, Glucagon-Like Peptides, Epithelium, Horseradish Peroxidase, Inflammation, Intestines, Male, Mice, Inbred BALB C, Microscopy, Electron, Peptides, Stress, Psychological, Diffusion Chambers, Culture, Mice, Glucagon-Like Peptide 2
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