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How intestinal bacteria cause disease.

R L Guerrant1, T S Steiner, A A Lima

  • 1Division of Geographic and International Medicine, University of Virginia School of Medicine, Charlottesville 22908, USA. rlg9a@virginia.edu

The Journal of Infectious Diseases
|March 19, 1999
PubMed
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Understanding how intestinal bacteria cause disease is crucial due to emerging pathogens and drug resistance. This review details pathogenic mechanisms, offering insights into treatment, diagnosis, and vaccine development for enteric infections.

Area of Science:

  • Microbiology
  • Pathogenesis
  • Cell Signaling

Background:

  • Emerging enteric pathogens pose significant threats.
  • Antimicrobial resistance is a growing concern.
  • Intestinal bacteria play a key role in malnutrition and diarrhea.

Purpose of the Study:

  • To review the diverse mechanisms by which intestinal bacteria cause disease.
  • To provide fundamental insights into microbial pathogenesis and host cell signaling.
  • To highlight the implications for treatment, diagnosis, and vaccine development.

Main Methods:

  • Literature review of established and emerging knowledge on enteric pathogen mechanisms.
  • Analysis of bacterial interactions with the intestinal epithelium.
  • Examination of host inflammatory responses and mediator release.

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Main Results:

  • Enteric pathogens employ strategies such as adherence, invasion, and toxin production (exotoxins, cytotoxins).
  • Bacterial actions trigger host cytokine release, attracting inflammatory cells.
  • Inflammatory cells release mediators like prostaglandins and platelet-activating factor, exacerbating disease.

Conclusions:

  • Understanding bacterial pathogenesis is vital for combating enteric diseases.
  • Insights gained can inform novel therapeutic strategies and control measures.
  • This knowledge may facilitate the development of improved diagnostic tools and vaccines.