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Bacterial translocation in cirrhosis is not caused by an abnormal small bowel gut microbiota.
MedLine Citation:
PMID:  22092561     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
Sepsis is common in liver cirrhosis, and animal studies have shown the gut to be the principal source of infection, through bacterial overgrowth and translocation in the small bowel. A total of 33 patients were recruited into this study, 10 without cirrhosis and 23 with cirrhotic liver disease. Six distal duodenal biopsies were obtained and snap frozen for RNA and DNA extraction, or frozen for FISH. Peripheral venous bloods were obtained from 30 patients, including 17 chronic liver disease patients. Samples were analysed by real-time PCR, to assess total bacteria, bifidobacteria, bacteroides, enterobacteria, staphylococci, streptococci, lactobacilli, enterococci, Helicobacter pylori and moraxella, as well as TNF-α, IL-8 and IL-18. There was no evidence of bacterial overgrowth with respect to any of the individual bacterial groups, with the exception of enterococci, which were present in higher numbers in cirrhotic patients (P = 0.04). There were no significant differences in any of the cytokines compared to the controls. The small intestinal mucosal microbiota in cirrhotic patients was qualitatively and quantitatively normal, and this shifts the focus of disease aetiology to factors that reduce gut integrity, failure of mechanisms to remove translocating bacteria, or the large bowel as the source of sepsis.
Authors:
Helen Steed; George T Macfarlane; Katie L Blackett; Sandra Macfarlane; Michael H Miller; Bahram Bahrami; John F Dillon
Publication Detail:
Type:  Journal Article     Date:  2011-09-08
Journal Detail:
Title:  FEMS immunology and medical microbiology     Volume:  63     ISSN:  1574-695X     ISO Abbreviation:  FEMS Immunol. Med. Microbiol.     Publication Date:  2011 Dec 
Date Detail:
Created Date:  2011-11-18     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9315554     Medline TA:  FEMS Immunol Med Microbiol     Country:  England    
Other Details:
Languages:  eng     Pagination:  346-54     Citation Subset:  IM    
Copyright Information:
© 2011 Federation of European Microbiological Societies. Published by Blackwell Publishing Ltd. All rights reserved.
Affiliation:
Dundee University Gut Group, Ninewells Hospital and Medical School, Dundee, UK.
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