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Related Experiment Videos

Attaching-effacing bacteria in animals.

A D Wales1, M J Woodward, G R Pearson

  • 1Division of Veterinary Pathology, Infection and Immunity, School of Veterinary Science, University of Bristol, Langford, Bristol BS40 5DU, UK.

Journal of Comparative Pathology
|January 5, 2005
PubMed
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Attaching-effacing (AE) bacteria, including AEEC, cause intestinal lesions in animals and humans. Research is clarifying their role in disease, focusing on virulence factors and host interactions.

Area of Science:

  • Microbiology
  • Veterinary Medicine
  • Pathogenesis

Background:

  • Attaching-effacing (AE) bacteria colonize the intestines of diverse animal species, including humans.
  • AE bacteria, particularly AEEC, are established enteropathogens in hosts like cattle, pigs, and humans.
  • The significance of AE bacteria in other host species is under investigation.

Purpose of the Study:

  • To review the molecular biology, occurrence, diagnosis, pathology, and clinical aspects of AE bacteria and associated animal diseases.
  • To highlight recent research advancements in AE bacteria, including modeling, quorum sensing, and adhesion roles.
  • To provide a comprehensive overview of AE bacteria, referencing human pathogens where relevant.

Main Methods:

  • Literature review focusing on molecular biology, epidemiology, and pathology of AE bacteria.

Related Experiment Videos

  • Inclusion of experimental data complementing natural colonization and disease studies.
  • Discussion of diagnostic and clinical aspects of AE bacterial infections in animals.

    • Main Results:

    • AE bacteria induce attaching-effacing lesions through intimate adhesion to the intestinal mucosa.
    • The "Locus for Enterocyte Effacement" (LEE) pathogenicity island coordinates the expression of approximately 40 genes essential for AE lesion formation.
    • Vero toxins are significant virulence factors for certain AEEC strains.

    Conclusions:

    • AE bacteria are important enteric pathogens with a broad host range.
    • Advances in detection and typing are improving our understanding of AE bacteria's impact on various hosts.
    • Further research into AE bacteria, including virulence mechanisms and host-pathogen interactions, is crucial for disease control and prevention.