Cited by 335Gut microbiota and healthGastrointestinal motility and disordersOral microbiology and periodontitis research

Stressor Exposure Disrupts Commensal Microbial Populations in the Intestines and Leads to Increased Colonization by Citrobacter rodentium

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Bailey, Michael T., Dowd, Scot E., Parry, Nicola M. A., Galley, Jeffrey D., Schauer, David B., Lyte, Mark·2010·Infection and Immunity

Abstract

The gastrointestinal tract is colonized by an enormous array of microbes that are known to have many beneficial effects on the host. Previous studies have indicated that stressor exposure can disrupt the stability of the intestinal microbiota, but the extent of these changes, as well as the effects on enteric infection, has not been well characterized. In order to examine the ability of stressors to induce changes in the gut microbiota, we exposed mice to a prolonged restraint stressor and then characterized microbial populations in the intestines using both traditional culture techniques and bacterial tag-encoded FLX amplicon pyrosequencing (bTEFAP). Exposure to the stressor led to an overgrowth of facultatively anaerobic microbiota while at the same time significantly reducing microbial richness and diversity in the ceca of stressed mice. Some of these effects could be explained by a stressor-induced reduction in the relative abundance of bacteria in the family Porphyromonadaceae . To determine whether these alterations would lead to increased pathogen colonization, stressed mice, as well as nonstressed controls, were challenged orally with the enteric murine pathogen Citrobacter rodentium . Exposure to the restraint stressor led to a significant increase in C. rodentium colonization over that in nonstressed control mice. The increased colonization was associated with increased tumor necrosis factor alpha (TNF-α) gene expression in colonic tissue. Together, these data demonstrate that a prolonged stressor can significantly change the composition of the intestinal microbiota and suggest that this disruption of the microbiota increases susceptibility to an enteric pathogen.

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Crossref · 10.1128/iai.00862-09

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Authors
Bailey, M. T., Dowd, S. E., Parry, N. M. A., Galley, J. D., Schauer, D. B., & Lyte, M.
Affiliations
  • The Ohio State University (US)
  • Research and Testing Laboratory and Medical Biofilm Research Institute, Lubbock, Texas 79407
  • Massachusetts Institute of Technology (US)
  • Texas Tech University (US)
Venue
Infection and Immunity
Published
2010-04
Volume
78
Issue
4
Pages
1509-1519
ISSN
  • 0019-9567 (ISSN-L)
  • 1098-5522
OpenAlex
W2143862999
Cited by
335
References
53
Citations by year
2026: 9 · 2025: 10 · 2024: 18 · 2023: 17 · 2022: 26 · 2021: 21 · 2020: 15 · 2019: 19 · 2018: 22 · 2017: 22 · 2016: 26 · 2015: 17 · 2014: 29 · 2013: 27 · 2012: 26
FWCI
10.94
Type
journal article
Language
en
Open access
Locations
  • Infection and Immunity (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Texas Tech University
  • National Institute of Allergy and Infectious Diseases (R03AI069097)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gut microbiota and health
  • Health Sciences › Medicine › Gastroenterology › Gastrointestinal motility and disorders
  • Health Sciences › Dentistry › Periodontics › Oral microbiology and periodontitis research
Keywords
restraint stress, gut microbiota, gut dysbiosis, Citrobacter rodentium, gastrointestinal infections, Porphyromonadaceae, microbial diversity, TNF-alpha gene expression, commensal bacteria, host susceptibility to infection, cecal microbiota
MeSH terms
Animals, Bacteria, Enterobacteriaceae Infections, Male, Stress, Physiological, Colony Count, Microbial, Gastrointestinal Tract, Citrobacter rodentium, Biodiversity, Mice

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