Cited by 791Gut microbiota and healthAlcohol Consumption and Health EffectsGastrointestinal motility and disorders

Enteric dysbiosis associated with a mouse model of alcoholic liver disease

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Yan, Arthur W., Fouts, Derrick E., Brandl, Johannes, Stärkel, Peter, Torralba, Manolito, Schott, Eckart, Tsukamoto, Hide, Nelson, Karen E. +2 more·2011·Hepatology

Abstract

The translocation of bacteria and bacterial products into the circulation contributes to alcoholic liver disease. Intestinal bacterial overgrowth is common in patients with alcoholic liver disease. The aims of our study were to investigate bacterial translocation, changes in the enteric microbiome, and its regulation by mucosal antimicrobial proteins in alcoholic liver disease. We used a mouse model of continuous intragastric feeding of alcohol or an isocaloric diet. Bacterial translocation occurred prior to changes observed in the microbiome. Quantitative changes in the intestinal microflora of these animals were assessed first using conventional culture techniques in the small and large intestine. Although we found no difference after 1 day or 1 week, intestinal bacterial overgrowth was observed in the gastrointestinal tract of mice fed alcohol for 3 weeks compared with control mice fed an isocaloric liquid diet. Because <20% of all gastrointestinal bacteria can be cultured using conventional methodologies, we performed massively parallel pyrosequencing to further assess the qualitative changes in the intestinal microbiome following alcohol exposure. Sequencing of 16S ribosomal RNA genes revealed a relative abundance of Bacteroidetes and Verrucomicrobia bacteria in mice fed alcohol compared with a relative predominance of Firmicutes bacteria in control mice. With respect to the host's transcriptome, alcohol feeding was associated with down-regulation in gene and protein expression of bactericidal c-type lectins Reg3b and Reg3g in the small intestine. Treatment with prebiotics partially restored Reg3g protein levels, reduced bacterial overgrowth, and lessened alcoholic steatohepatitis. Conclusion: Alcohol feeding is associated with intestinal bacterial overgrowth and enteric dysbiosis. Intestinal antimicrobial molecules are dysregulated following chronic alcohol feeding contributing to changes in the enteric microbiome and to alcoholic steatohepatitis. (Hepatology 2011)

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Crossref · 10.1002/hep.24018

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  • Increased blood lipopolysaccharide reflects gut leakiness and is accompanied by greater intestinal permeability to high molecular weight polyethylene glycol in alcoholic liver disease and to FITC-dextran in mouse models of alcoholic and biliary liver disease.

    “Increases in blood LPS levels reflect gut leakiness and are mirrored by a number of other alterations such as increased intestinal permeability to high molecular weight polyethylene glycol in patients with ALD26 and to FITC-dextran in mouse models of alcoholic and biliary liver disease27,28.”
  • Akkermansia, a mucus degrading bacteria, negatively correlates with obesity in patients and mice, although it is enriched in stool samples from alcohol-induced steatohepatitis in mice.

    “The abundance of Akkermansia, a mucus degrading bacteria, has been described to negatively correlate with obesity in patients28 and mice29 although it is enriched in stool samples from alcohol-induced steatohepatitis in mice30.”

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Authors
Yan, A. W., Fouts, D. E., Brandl, J., Stärkel, P., Torralba, M., Schott, E., Tsukamoto, H., Nelson, K. E., Brenner, D. A., & Schnabl, B.
Affiliations
  • University of California San Diego (US)
  • J. Craig Venter Institute (US)
  • UCLouvain (BE)
  • Charité – Universitätsmedizin Berlin (DE)
Corresponding author
Schnabl, Bernd
Venue
Hepatology
Published
2011-01
Volume
53
Issue
1
Pages
96-105
ISSN
0270-9139 (ISSN-L)
OpenAlex
W2027968599
Cited by
791
References
53
Citations by year
2026: 23 · 2025: 45 · 2024: 77 · 2023: 58 · 2022: 70 · 2021: 81 · 2020: 79 · 2019: 58 · 2018: 62 · 2017: 60 · 2016: 38 · 2015: 49 · 2014: 34 · 2013: 23 · 2012: 19
FWCI
7.17
Type
journal article
Language
en
Open access
Locations
  • Hepatology (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • DIAL (Catholic University of Leuven) (submittedVersion)
Funders
  • University of Southern California
  • National Institutes of Health
  • National Institute on Alcohol Abuse and Alcoholism (P50-AA11999, P50AA011999)
  • National Institute of General Medical Sciences (R01GM041804)
  • National Institute of Diabetes and Digestive and Kidney Diseases (R01DK072237, K08DK081830)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gut microbiota and health
  • Health Sciences › Medicine › Pathology and Forensic Medicine › Alcohol Consumption and Health Effects
  • Health Sciences › Medicine › Gastroenterology › Gastrointestinal motility and disorders
Keywords
alcoholic liver disease, alcoholic steatohepatitis, intestinal bacterial overgrowth, bacterial translocation, gut microbiota, Reg3b, Reg3g, C-type lectin, prebiotics, chronic alcohol feeding, Bacteroidetes, Verrucomicrobia, Firmicutes, 16S rRNA gene sequencing
MeSH terms
Pancreatitis-Associated Proteins, Animals, Disease Models, Animal, Fatty Liver, Alcoholic, Intestine, Small, Intestines, Liver Diseases, Alcoholic, Mice, Inbred C57BL, Proteins, RNA, Ribosomal, 16S, Bacterial Translocation, Mice

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