Cited by 119Gut microbiota and healthGastrointestinal motility and disordersProbiotics and Fermented Foods

Stress and antibiotics alter luminal and wall‐adhered microbiota and enhance the local expression of visceral sensory‐related systems in mice

Aguilera, M., Vergara, P., Martínez, V.·2013·Neurogastroenterology & Motility

Abstract

Background: Stress leads to altered gastrointestinal neuro‐immune responses. We characterized the interaction between stress and gut commensal microbiota and their role modulating colonic responses to stress, the induction of inflammation, the expression of sensory‐related markers, and visceral sensitivity. Methods: C57BL/6N female mice were treated (7 days, PO) with non‐absorbable‐broad spectrum antibiotics (bacitracin/neomycin, 0.4 mg per mouse per day). Simultaneously, mice were subjected to a 1 h per day (7 days) session of psychological stress (water avoidance stress, WAS). Luminal and wall‐adhered microbiota were characterized by fluorescent in situ hybridization. Cannabinoid receptors 1 and 2 (CB1/2), tryptophan hydroxylase 1 and 2 (TPH1/2), and inflammatory markers were quantified by reverse transcription–quantitative real‐time PCR (RT‐qPCR) and secretory‐IgA (s‐IgA) by ELISA. Visceral sensitivity was assessed after the intracolonic administration of capsaicin. Key Results: Antibiotics did not affect the defecatory and endocrine responses to stress. However, antibiotics diminished by 2.5‐folds total bacterial counts, induced a specific dysbiosis and favored bacterial wall adherence. Combining antibiotics and stress resulted in further reductions in bacterial counts and a dysbiosis, with enhanced bacterial wall adherence. Luminal s‐IgA levels increased in dysbiotic mice. Nevertheless, no alterations consistent with the induction of colonic inflammation were observed. Dysbiosis upregulated CB 2 expression and stress upregulated CB 2 and TPH 1 expression. Stress enhanced visceral pain‐related responses, an effect prevented by antibiotic treatment. Conclusions & Inferences: Manipulations of the commensal microbiota and the interaction host–microbiota are able to modulate the local expression of neuro–immune–endocrine systems within the colon, leading to a modulation of visceral sensitivity. These mechanisms might contribute to the pathogenic and protective roles of microbiota in gastrointestinal homeostasis.

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Crossref · 10.1111/nmo.12154

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Authors
Aguilera, M., Vergara, P., & Martínez, V.
Affiliations
  • Universitat Autònoma de Barcelona (ES)
  • Department of Cell Biology, Physiology and Immunology Universitat Autònoma de Barcelona Bellaterra Barcelona Spain
Venue
Neurogastroenterology & Motility
Publisher
Wiley
Published
2013-05-27
Volume
25
Issue
8
Pages
e515-29
ISSN
  • 1350-1925 (ISSN-L)
  • 1365-2982
OpenAlex
W2041215328
Cited by
119
References
67
Citations by year
2026: 2 · 2025: 4 · 2024: 5 · 2023: 11 · 2022: 13 · 2021: 15 · 2020: 7 · 2019: 6 · 2018: 13 · 2017: 8 · 2016: 15 · 2015: 7 · 2014: 9 · 2013: 4
FWCI
5.22
Type
journal article
Language
en
Open access
closed
Locations
  • Neurogastroenterology & Motility (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 › Agricultural and Biological Sciences › Food Science › Probiotics and Fermented Foods
Keywords
psychological stress, gut microbiota, dysbiosis, antibiotic-induced dysbiosis, visceral sensitivity, visceral pain, gut-brain axis, cannabinoid receptors, CB2, tryptophan hydroxylase, secretory IgA, colonic inflammation, water avoidance stress, capsaicin
MeSH terms
Animals, Anti-Bacterial Agents, Colon, Female, Intestinal Mucosa, Mice, Inbred C57BL, Random Allocation, Stress, Psychological, Up-Regulation, Mice, Visceral Pain, Microbiota

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