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[Streptococcus pneumoniae adhesion]

A S Kvetnaia, N N Kostiukova, V V Ivanova

    Zhurnal Mikrobiologii, Epidemiologii I Immunobiologii
    |September 1, 1995
    PubMed
    Summary

    Streptococcus pneumoniae (S. pneumoniae) R-forms show higher adhesion than S-forms. Adhesion varies by infection site, with respiratory tract strains being more adhesive than those from meningitis or otitis.

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    Area of Science:

    • Microbiology
    • Infectious Diseases
    • Bacterial Pathogenesis

    Background:

    • Streptococcus pneumoniae (S. pneumoniae) is a significant human pathogen causing diverse infections.
    • Bacterial adhesion is a critical factor in the pathogenesis of pneumococcal infections.
    • Understanding S. pneumoniae adhesion mechanisms can inform therapeutic strategies.

    Purpose of the Study:

    • To investigate the adhesive capacity of S. pneumoniae strains from various clinical forms of infection in children.
    • To compare the adhesion of S-form and R-form S. pneumoniae.
    • To explore the relationship between hyaluronidase activity and adhesive capacity.

    Main Methods:

    • Studied 425 S. pneumoniae strains (S- and R-forms) isolated from children.
    • Utilized oral cavity epithelium as an in vitro model for adhesion studies.
    • Assessed hyaluronidase activity in relation to bacterial adhesion.

    Main Results:

    • S. pneumoniae strains from meningitis and otitis exhibited lower adhesive capacity compared to strains from the respiratory tract.
    • R-form S. pneumoniae strains demonstrated significantly higher adhesive capacity than S-form strains across all clinical forms.
    • A negative correlation was observed between hyaluronidase activity and the adhesive capacity of S. pneumoniae strains.

    Conclusions:

    • Bacterial form (S vs. R) and infection site significantly influence S. pneumoniae adhesion.
    • Reduced adhesion in meningitis and otitis strains suggests different pathogenic mechanisms.
    • Hyaluronidase activity may play an inhibitory role in S. pneumoniae adhesion.

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