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Cell invasiveness of Proteus mirabilis and Proteus vulgaris strains

A Rózalski, H Długońska, K Kotełko

    Archivum Immunologiae Et Therapiae Experimentalis
    |January 1, 1986
    PubMed

    Insights

    Haemolytic Proteus bacteria show enhanced cell invasion compared to non-haemolytic strains. This bacterial cell penetration ability, particularly within human lymphocytes, may contribute to infection development in hosts.

    Area of Science:

    • Microbiology
    • Cell Biology
    • Infectious Diseases

    Background:

    • Proteus bacteria are known opportunistic pathogens.
    • Bacterial cell penetration is a key virulence factor.
    • Haemolysis is a virulence trait in some bacteria.

    Purpose of the Study:

    • To compare the cell penetration ability of haemolytic and non-haemolytic Proteus strains.
    • To investigate bacterial invasion and survival in various cell types.

    Main Methods:

    • In vitro cell culture assays using Vero 135, HeLa, and L-929 cell lines.
    • Invasion assays with human blood lymphocytes.
    • Comparison of invasion efficiency between haemolytic and non-haemolytic Proteus strains.

    Main Results:

    • All tested Proteus strains demonstrated cell invasion capabilities.
    • Haemolytic Proteus strains exhibited significantly higher cell penetration efficiency.
    • Intracellular survival and multiplication were observed, especially in human blood lymphocytes.

    Conclusions:

    • Haemolytic activity correlates with enhanced bacterial cell invasion in Proteus.
    • Intracellular survival within host cells, particularly lymphocytes, is a crucial factor for Proteus pathogenesis.
    • These findings highlight the importance of bacterial cell penetration in the development of infections.

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