Cited by 5Gut microbiota and healthGastrointestinal motility and disordersAdipokines, Inflammation, and Metabolic Diseases

Effect of Chronic Restraint Stress and Western-Diet Feeding on Colonic Regulatory Gene Expression in Mice

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Hatton‐Jones, Kyle M., du Toit, Eugene F., Cox, Amanda J.·2022·Neurogastroenterology & Motility

Abstract

BACKGROUND: Diet-induced obesity (DIO) and psychological stress are significant independent regulators of gastrointestinal physiology; however, our understanding of how these two disorders influence the host-microbe interface is still poorly characterized. The aim of this study was to assess the combined influences of diet-induced obesity and psychological stress on microbiome composition and colonic gene expression. METHODS: C57BL/6J mice (n = 48) were subject to a combination of 22 weeks of Western diet (WD) feeding and a chronic restraint stressor (CRS) for the last 4 weeks of feeding. At the end of the combined intervention, microbiome composition was determined from cecal contents, and colonic tissue gene expression was assessed by multiplex analysis using NanoString nCounter System and real-time qPCR. RESULTS: WD feeding induced a DIO phenotype with increased body weight, worsened metabolic markers, and alterations to microbiome composition. CRS reduced body weight in both dietary groups while having differential effects on glucose metabolism. CRS improved the Firmicutes/Bacteroidetes ratio in WD-fed animals while expanding the Proteobacteria phyla. Significantly lower expression of colonic Tlr4 (p = 0.008), Ocln (p = 0.004), and Cldn3 (p = 0.004) were noted in WD-fed animals compared to controls with no synergistic effects observed when combined with CRS. No changes to colonic expression of downstream inflammatory mediators were observed. Interestingly, higher levels of expression of Cldn2 (p = 0.04) and bile acid receptor Nr1h4 (p = 0.02) were seen in mice exposed to CRS. CONCLUSION: Differential but not synergistic effects of WD and CRS were noted at the host-microbe interface suggesting multifactorial responses that require further investigation.

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  1. Mawe G, Hoffman J. Serotonin signaling in the gastrointestinal tract. Nat Rev Gastroenterol Hepatol. 2013;10(8):473-86.
  2. Garcia-Diaz DF, Campion J, Milagro FI, Lomba A, Marzo F, Martinez JA. Chronic mild stress induces variations in locomotive behavior and metabolic rates in high fat fed rats. J Physiol Biochem. 2007;63(4):337-46.

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Authors
Hatton‐Jones, K. M., du Toit, E. F., & Cox, A. J.
Affiliations
  • Griffith University (AU)
  • School of Medical Science Griffith University Southport Queensland Australia
Corresponding author
Hatton‐Jones, Kyle M.
Venue
Neurogastroenterology & Motility
Publisher
Wiley
Published
2021-11-26
Volume
34
Issue
4
Pages
e14300-e14300
ISSN
  • 1350-1925 (ISSN-L)
  • 1365-2982
OpenAlex
W3215522655
Cited by
5
References
108
Citations by year
2025: 2 · 2024: 1 · 2023: 1 · 2022: 1
FWCI
0.24
Type
journal article
Language
en
Open access
Locations
  • Neurogastroenterology & Motility (publishedVersion)
  • PubMed (publishedVersion)
  • Griffith Research Online (submittedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gut microbiota and health
  • Health Sciences › Medicine › Gastroenterology › Gastrointestinal motility and disorders
  • Health Sciences › Medicine › Epidemiology › Adipokines, Inflammation, and Metabolic Diseases
Keywords
chronic restraint stress, Western diet, diet-induced obesity, gut microbiota, colonic gene expression, TLR4, occludin, claudin-3, claudin-2, farnesoid X receptor, bile acid receptors, Firmicutes/Bacteroidetes ratio, Proteobacteria, glucose metabolism, intestinal barrier
MeSH terms
Gastrointestinal Microbiome, Animals, Body Weight, Mice, Inbred C57BL, Obesity, Gene Expression, Mice, Diet, High-Fat, Diet, Western

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