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[Humoral and cellular immunity in meningitis of various etiology]

A B Insanov, N A Feĭzullaeva

    Problemy Tuberkuleza
    |June 6, 2000
    PubMed

    Insights

    Tuberculous meningitis significantly alters T lymphocyte function and levels, impacting cellular immunity. Elevated spinal fluid beta-2-microglobulin and IgE are key indicators for diagnosing tuberculous meningitis.

    Area of Science:

    • Immunology
    • Neurology
    • Infectious Diseases

    Background:

    • Meningitis encompasses various forms, including tuberculous, purulent, and serous types, each presenting distinct pathophysiological mechanisms.
    • Understanding the immune response in different meningitis subtypes is crucial for accurate diagnosis and effective treatment.

    Purpose of the Study:

    • To investigate and compare the humoral and cellular immunity parameters in patients with tuberculous meningitis versus other forms of meningitis.
    • To identify specific immune markers that can aid in the differential diagnosis of tuberculous meningitis.

    Main Methods:

    • Analysis of peripheral blood and cerebrospinal fluid samples from patients diagnosed with tuberculous, purulent, or serous meningitis.
    • Assessment of T lymphocyte counts, subpopulations, and functional activity (blast cell transformation) in response to purified protein derivative (PPD) antigen.
    • Measurement of beta-2-microglobulin and Immunoglobulin E (IgE) levels in cerebrospinal fluid.

    Main Results:

    • Profound alterations in T lymphocyte content and subpopulations were observed across meningitis types.
    • Impaired cellular immunity was characterized by changes in immune cell counts and functional activity, particularly evident in tuberculous meningitis.
    • Significantly higher blast cell transformation rates in response to PPD were noted in tuberculous meningitis patients (18.11% peripheral, 15.1% spinal fluid) compared to controls.
    • Elevated cerebrospinal fluid levels of beta-2-microglobulin and IgE were identified as characteristic markers for tuberculous meningitis.

    Conclusions:

    • Cellular immunity, specifically T lymphocyte function, is significantly dysregulated in tuberculous meningitis.
    • Cerebrospinal fluid beta-2-microglobulin and IgE levels serve as valuable differential diagnostic markers for tuberculous meningitis, distinguishing it from other meningitis types.

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