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Chemotactic activity of cerebrospinal fluid in experimental cryptococcal meningitis

J R Perfect, D T Durack

    Sabouraudia
    |February 1, 1985
    PubMed

    Insights

    Cerebrospinal fluid (CSF) from rabbits with cryptococcal meningitis showed chemotactic activity for inflammatory cells. Cortisone treatment reduced this activity, potentially impairing the host

    Area of Science:

    • Neuroimmunology
    • Infectious Diseases
    • Cerebrospinal Fluid Analysis

    Background:

    • Cryptococcal meningitis is a serious central nervous system infection.
    • The host immune response in the cerebrospinal fluid (CSF) is critical for controlling infection.
    • Chemotactic factors in CSF may influence inflammatory cell recruitment.

    Purpose of the Study:

    • To investigate the chemotactic activity of CSF during experimental cryptococcal meningitis.
    • To determine the source and characteristics of CSF chemotactic factors.
    • To evaluate the effect of cortisone treatment on CSF chemotactic activity and its implications.

    Main Methods:

    • Collection of cerebrospinal fluid from rabbits infected with Cryptococcus neoformans.
    • Assay of CSF chemotactic activity towards polymorphonuclear cells and monocytes.
    • Analysis of CSF chemotactic activity in relation to infection stage and cortisone treatment.

    Main Results:

    • CSF exhibited significant chemotactic activity, peaking 5-8 days post-infection.
    • Early infection stages showed minimal chemotactic activity.
    • Cortisone treatment markedly reduced CSF chemotactic activity for both cell types.

    Conclusions:

    • Host-derived factors, possibly lymphokines or C5a, mediate CSF chemotactic activity.
    • Reduced CSF chemotactic activity due to cortisone may contribute to leukopenia and impaired fungal clearance.
    • Modulation of CSF chemotactic activity is a key factor in the central nervous system's response to Cryptococcus neoformans.

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