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[PLASMID-ASSOCIATED VIRULENCE OF YERSINIA PSEUDOTUBERCULOSIS AND INFECTIOUS PROCESS].

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    Genetically determined factors, including plasmids like pYV and pVM82, influence the pathogenicity of Yersinia pseudotuberculosis. Understanding these factors improves diagnostics and prognosis for pseudotuberculosis and yersiniosis.

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    Area of Science:

    • Microbiology
    • Immunology
    • Pathogenesis

    Background:

    • Yersinia pseudotuberculosis causes various infections, with pathogenicity linked to genetic factors.
    • Virulence plasmids, particularly pYV, play a key role in Y. pseudotuberculosis pathogenesis.
    • The pVM82 plasmid is associated with Far East scarlet-like fever (FESLF), a specific manifestation.

    Purpose of the Study:

    • To generalize literature data on genetically determined pathogenicity factors of Yersinia pseudotuberculosis.
    • To investigate the role of virulence plasmids (pYV and pVM82) in Y. pseudotuberculosis infections.
    • To explore the molecular basis of FESLF pathogenesis.

    Main Methods:

    • Literature review and generalization of existing data.
    • Analysis of cell-tissue alterations mediated by virulence plasmids.
    • Investigation of YPMa superantigen production by Far Eastern strains.

    Main Results:

    • Virulence plasmid pYV mediates cell-tissue alterations in Y. pseudotuberculosis infections.
    • The pVM82 plasmid is crucial for strains causing FESLF.
    • Far-Eastern strains produce YPMa superantigen, likely key in FESLF pathogenesis.
    • Plasmid variability influences damage to innate immunity cells and target organs, leading to diverse clinical manifestations.

    Conclusions:

    • Plasmid type variability in Y. pseudotuberculosis dictates the spectrum of clinical and morphological manifestations.
    • Understanding the interplay between bacterial molecular characteristics and immune pathogenesis offers improved diagnostics and prognosis for pseudotuberculosis and yersiniosis.