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Enterotoxin induced diarrhoea--an update.

G B Nair, S C Pal

    Tropical Gastroenterology : Official Journal of the Digestive Diseases Foundation
    |July 1, 1989
    PubMed
    Summary
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    This review covers bacterial enterotoxins, potent proteins causing diarrhea. It highlights structurally similar exotoxins from various enteric bacteria genera, detailing their common mechanisms of action.

    Area of Science:

    • Microbiology
    • Molecular Biology
    • Immunology

    Background:

    • Enteric bacteria possess pathogenic factors, including potent protein exotoxins, that cause diarrhea through intracellular mechanisms.
    • Genera such as Vibrio, Escherichia, Shigella, Salmonella, Campylobacter, Aeromonas, and Yersinia harbor species that produce similar exotoxins.
    • These toxins often share common mechanisms involving receptor binding, internalization, and intracellular target interaction.

    Purpose of the Study:

    • To review recent developments in the field of bacterial enterotoxins.
    • To discuss families of structurally homologous and antigenically cross-reacting enteric toxins.

    Main Methods:

    • Literature review of recent scientific publications.
    • Analysis of structural, functional, and immunological data on bacterial enterotoxins.

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    Main Results:

    • Identification of several distinct families of bacterial enterotoxins.
    • Characterization of shared mechanisms of action, including receptor binding and intracellular targeting.
    • Recognition of structural and functional similarities among exotoxins from different bacterial genera.

    Conclusions:

    • Bacterial enterotoxins represent a diverse yet mechanistically convergent group of virulence factors.
    • Understanding these toxin families is crucial for developing effective countermeasures against enteric bacterial infections.
    • Further research into toxin structure-function relationships can reveal novel therapeutic targets.