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Related Experiment Videos

Migration inhibition factor study in Histoplasma capsulatum.

K L Anderson, A Y Sakaguchi

    Mycopathologia
    |September 1, 1978
    PubMed
    Summary

    Viable Histoplasma capsulatum vaccines offered better protection against infection than killed cells in mice. However, migration inhibition assays did not accurately predict protection levels in this model.

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    Corrigendum to: "Interleukin-8 promotes canine hemangiosarcoma growth by regulating the tumor microenvironment" [Exp. Cell. Res. 2014 15 323(1) 155-64].

    Experimental cell research·2018

    Area of Science:

    • Immunology
    • Mycology
    • Infectious Diseases

    Background:

    • Histoplasma capsulatum is a fungal pathogen causing histoplasmosis.
    • Understanding protective immunity is crucial for vaccine development.
    • Cellular immune responses are key in combating fungal infections.

    Purpose of the Study:

    • To evaluate the efficacy of viable versus killed Histoplasma capsulatum vaccines in a mouse model.
    • To assess the correlation between migration inhibition (MI) assays and protection against challenge infection.
    • To compare the protective capabilities of different vaccine types.

    Main Methods:

    • Mice were infected with viable Histoplasma capsulatum or immunized with killed yeast cells.
    • Subsequent challenge infections were performed to assess mortality.
    • Migration inhibition assays were conducted using peritoneal and spleen cells from immunized mice.

    Main Results:

    • Both viable and killed vaccines reduced mortality upon challenge infection compared to controls.
    • Viable vaccines conferred greater resistance than killed vaccines.
    • Migration inhibition assay indices did not correlate with the level of protection observed.

    Conclusions:

    • Viable Histoplasma capsulatum vaccines provide superior protection compared to killed vaccines.
    • Migration inhibition assays may not be a reliable correlate of protection for Histoplasma infections in this model.
    • Further research is needed to identify accurate correlates of protection for fungal vaccines.

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