Cited by 199Gastrointestinal motility and disordersGut microbiota and healthGastrointestinal Bleeding Diagnosis and Treatment

Bacterial Populations Contaminating The Upper Gut in Patients With Small Intestinal Bacterial Overgrowth Syndrome

Bouhnik, Yoram, Alain, Sophie, Attar, Alain, Flourié, Bernard, Raskine, Laurent, Sanson-Le Pors, Marie José, Rambaud, Jean-Claude·1999·American Journal of Gastroenterology

Abstract

OBJECTIVE: Small intestinal bacterial overgrowth syndrome (SIBOS) is characterized by an abnormally high bacterial population level in the upper gut, exceeding 10(5) organisms/ml (5 log colony-forming unit (CFU)/ml). To understand its origin and select an appropriate antibiotic treatment, we have analyzed the bacterial populations contaminating the upper gut in SIBOS patients. METHODS: Jejunal samples of 63 consecutive patients with diarrhea or malabsorption and conditions predisposing to SIBOS were cultured and antibiotic sensitivities determined. RESULTS: Concentrations of total, microaerophilic, and anaerobic bacteria were confirmed in 55 patients with SIBOS (mean +/- SE) 7.6 +/- 0.8, 7.4 +/- 0.9, and 6.1 +/- 0.7 log CFU/ml, respectively. Mean number of bacterial genera was 4.6 +/- 0.8. The main bacteria recovered were (mean +/- SE log CFU/ml) Streptococcus (71%; 6.4 +/- 0.8), Escherichia coli (69%; 7.2 +/- 0.9), Staphylococcus (25%; 6.2 +/- 0.6), Micrococcus (22%; 6.0 +/- 0.7), Klebsiella (20%; 7.1 +/- 0.8), Proteus (11%; 6.1 +/- 0.8) for microaerophilic bacteria, and Lactobacillus (75%; 6.1 +/- 1.1), Bacteroides (29%; 6.9 +/- 1.3), Clostridium (25%; 5.5 +/- 1.0), Veillonella (25%; 5.3 +/- 0.7), Fusobacterium (13%; 4.8 +/- 0.5), and Peptostreptococcus (13%; 6.1 +/- 0.7) for anaerobic bacteria. Amoxicillin-clavulanic acid and cefoxitin were efficient on >90% of strains. CONCLUSIONS: Contaminating flora isolated in SIBOS include commonly identified oropharyngeal and colonic flora, but these occur in SIBOS at different levels from those usually found in their original location. These data may hopefully serve as a starting point to further therapeutic controlled studies.

Integrity signals

Registry

Crossref · 10.1111/j.1572-0241.1999.01016.x

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18 of 18 references verified0 citation errors · 0 not checkable

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  • In jejunal samples of SIBO patients, an overgrowth of microaerophilic microorganisms such as Streptococcus, Staphylococcus, Escherichia, and Klebsiella and anaerobic bacteria such as Bacteroides, Lactobacillus, Veillonella and Clostridium was found.

    “In jejunal samples of SIBO patients, an overgrowth of microaerophilic microorganisms such as Streptococcus, Staphylococcus, Escherichia, and Klebsiella and anaerobic bacteria such as Bacteroides, Lactobacillus, Veillonella and Clostridium was found[85].”

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Authors
Bouhnik, Y., Alain, S., Attar, A., Flourié, B., Raskine, L., Sanson-Le Pors, M. J., & Rambaud, J.-C.
Affiliations
Hôpital Saint Lazare (FR)
Corresponding author
Bouhnik, Yoram
Venue
American Journal of Gastroenterology
Published
1999-05
Volume
94
Issue
5
Pages
1327-1331
ISSN
0002-9270 (ISSN-L)
OpenAlex
W2078814736
Cited by
199
References
18
Citations by year
2026: 4 · 2025: 7 · 2024: 5 · 2023: 8 · 2022: 11 · 2021: 11 · 2020: 13 · 2019: 14 · 2018: 6 · 2017: 11 · 2016: 7 · 2015: 8 · 2014: 14 · 2013: 8 · 2012: 5
FWCI
1.34
Type
journal article
Language
en
Open access
closed
Locations
  • The American Journal of Gastroenterology (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Gastroenterology › Gastrointestinal motility and disorders
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gut microbiota and health
  • Health Sciences › Medicine › Gastroenterology › Gastrointestinal Bleeding Diagnosis and Treatment
Keywords
anaerobic bacteria, microaerophilic bacteria, Streptococcus, Escherichia coli, Lactobacillus, antibiotic susceptibility, amoxicillin-clavulanic acid, cefoxitin, antibiotic therapy, diarrhea, malabsorption, bacterial colonization, oropharyngeal flora
MeSH terms
Adult, Aged, Bacteria, Diarrhea, Female, Humans, Jejunum, Malabsorption Syndromes, Male, Microbial Sensitivity Tests, Middle Aged, Syndrome

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