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Microbial translocation in chronic liver diseases

Marilia Rita Pinzone1, Benedetto Maurizio Celesia, Michele Di Rosa

  • 1Division of Infectious Diseases, Department of Clinical and Molecular Biomedicine, University of Catania, 95125 Catania, Italy.

International Journal of Microbiology
|August 1, 2012
PubMed

Insights

Gut microflora derangement can cause microbial translocation (MT), impacting liver disease progression and complications. Probiotics show promise for reducing MT, but require larger clinical trials for confirmation.

Area of Science:

  • Gastroenterology and Hepatology
  • Microbiology
  • Immunology

Background:

  • The intestinal microflora plays a crucial role in nutrient digestion and local immunity, acting as a barrier against pathogens.
  • Derangement of gut microflora can lead to microbial translocation (MT), the passage of microorganisms or bacterial products from the gut to extraintestinal sites.
  • MT is increasingly recognized in early-stage liver diseases like alcoholic and nonalcoholic fatty liver disease, not just cirrhosis.

Purpose of the Study:

  • To review the mechanisms and implications of microbial translocation in liver diseases.
  • To explore therapeutic strategies for modulating gut microflora and reducing MT.
  • To highlight the potential of probiotics as a therapeutic option.

Main Methods:

  • Literature review of mechanisms favoring MT (e.g., bacterial overgrowth, increased intestinal permeability, impaired immunity).
  • Analysis of MT's role in the pathogenesis of cirrhosis complications.
  • Evaluation of current and emerging therapeutic strategies, including antibiotics and probiotics.

Main Results:

  • Microbial translocation is implicated in the pathogenesis of liver disease complications, contributing to morbidity and mortality.
  • Mechanisms such as small intestinal bacterial overgrowth, increased intestinal permeability, and impaired immunity facilitate MT.
  • Antibiotic-based and non-antibiotic-based therapies are being explored to reduce MT.

Conclusions:

  • Microbial translocation is a significant factor in liver disease progression and complications.
  • Modulating the gut microflora and reducing MT are key therapeutic goals.
  • Probiotics represent a promising, though not yet fully validated, strategy for managing MT in liver disease.

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