Cited by 894Gut microbiota and healthInflammatory Bowel DiseaseMicroscopic Colitis

Spatial organization and composition of the mucosal flora in patients with inflammatory bowel disease

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Swidsinski, Alexander, Weber, Jutta, Loening-Baucke, Vera, Hale, Laura P., Lochs, Herbert·2005·Journal of Clinical Microbiology

Abstract

The composition and spatial organization of the mucosal flora in biopsy specimens from patients with inflammatory bowel disease (IBD; either Crohn's disease or ulcerative colitis), self-limiting colitis, irritable-bowel syndrome (IBS), and healthy controls were investigated by using a broad range of fluorescent bacterial group-specific rRNA-targeted oligonucleotide probes. Each group included 20 subjects. Ten patients who had IBD and who were being treated with antibiotics were also studied. Use of nonaqueous Carnoy fixative to preserve the mucus layer was crucial for detection of bacteria adherent to the mucosal surface (mucosal bacteria). No biofilm was detectable in formalin-fixed biopsy specimens. Mucosal bacteria were found at concentrations greater than 10 9 /ml in 90 to 95% of IBD patients, 95% of patients with self-limiting colitis, 65% of IBS patients, and 35% of healthy controls. The mean density of the mucosal biofilm was 2 powers higher in IBD patients than in patients with IBS or controls, and bacteria were mostly adherent. Bacteroides fragilis was responsible for >60% of the biofilm mass in patients with IBD but for only 30% of the biofilm mass in patients with self-limiting colitis and <15% of the biofilm mass in patients with IBS. In contrast, bacteria which positively hybridized with the probe specific for Eubacterium rectale - Clostridium coccoides accounted for >40% of the biofilm in IBS patients but for <15% of the biofilm in IBD patients. In patients treated with (5-ASA) or antibiotics, the biofilm could be detected with 4,6-diamidino-2-phenylindole but did not hybridize with fluorescence in situ hybridization probes. A Bacteroides fragilis biofilm is the main feature of IBD. This was not previously recognized due to a lack of appropriate tissue fixation. Both 5-ASA and antibiotics suppress but do not eliminate the adherent biofilm.

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Crossref · 10.1128/jcm.43.7.3380-3389.2005

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  • Spatial niche partitioning of microbial populations can result from mucus from goblet cells and differential oxygen tolerance.

    “Spatial niche partitioning of microbial populations can also be a result of mucus from goblet cells 46 and differential oxygen tolerance47.”

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Authors
Swidsinski, A., Weber, J., Loening-Baucke, V., Hale, L. P., & Lochs, H.
Affiliations
  • Humboldt-Universität zu Berlin (DE)
  • Duke Medical Center (US)
Venue
Journal of Clinical Microbiology
Published
2005-07
Volume
43
Issue
7
Pages
3380-3389
ISSN
  • 0095-1137 (ISSN-L)
  • 1098-660X
OpenAlex
W2097177097
Cited by
894
References
36
Citations by year
2026: 15 · 2025: 27 · 2024: 45 · 2023: 47 · 2022: 59 · 2021: 47 · 2020: 50 · 2019: 54 · 2018: 46 · 2017: 35 · 2016: 47 · 2015: 49 · 2014: 41 · 2013: 43 · 2012: 44
FWCI
12.71
Type
journal article
Language
en
Open access
Locations
  • Journal of Clinical Microbiology (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
Eli and Edythe Broad Foundation
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gut microbiota and health
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Inflammatory Bowel Disease
  • Health Sciences › Medicine › Epidemiology › Microscopic Colitis
Keywords
inflammatory bowel disease, Crohn's disease, ulcerative colitis, Bacteroides fragilis, irritable bowel syndrome, 5-aminosalicylic acid, antibiotic therapy, bacterial adhesion, fluorescence in situ hybridization, rRNA-targeted oligonucleotide probes
MeSH terms
Adult, Bacteria, Bacteroides fragilis, Biopsy, Colitis, Ulcerative, Crohn Disease, Female, Humans, Intestinal Mucosa, Male, Middle Aged, Colon, Sigmoid, In Situ Hybridization, Fluorescence, Ecosystem, Biofilms

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