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Complement and circulating immune complexes in children with mumps meningitis.

K Madaliński, D Imbs, H Gregorek

    Archivum Immunologiae Et Therapiae Experimentalis
    |January 1, 1984
    PubMed
    Summary
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    Complement activity (CH50) decreases and circulating immune complexes (CIC) are present in children with mumps meningitis. These levels normalize over time, indicating the immune system

    Area of Science:

    • Immunology
    • Virology
    • Pediatrics

    Background:

    • Mumps meningitis is a significant neurological complication in children.
    • The role of complement system activation and immune complex formation in mumps meningitis pathogenesis requires further elucidation.

    Purpose of the Study:

    • To investigate the dynamics of hemolytic activity of complement (CH50) and the prevalence of circulating immune complexes (CIC) in children diagnosed with mumps meningitis.
    • To characterize the molecular weight and antibody classes within detected immune complexes.

    Main Methods:

    • Serum samples were collected from children with mumps meningitis at multiple time points.
    • Hemolytic complement activity (CH50) was measured using standard assays.
    • Circulating immune complexes (CIC) were detected and quantified; high concentration CIC samples were analyzed for molecular weight using sepharose 6B gel filtration and antibody classes (IgG, IgA, IgM) via Elisa.

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    Main Results:

    • A significant decrease in CH50 levels was observed in 60% of samples during the acute phase (1-6 days), with improvement by the third examination (12-14 months).
    • CIC were present in 21% of samples during the acute phase, decreasing to 14% by the third examination.
    • Analysis of a high CIC sample revealed immune complexes with molecular weights of 2.5 X 10(6) and 5.0 X 10(5) daltons, containing anti-mumps antibodies across IgG, IgA, and IgM classes.

    Conclusions:

    • Mumps meningitis is associated with transient complement system activation and the formation of circulating immune complexes.
    • The presence and characteristics of CIC suggest their involvement in the inflammatory process of mumps meningitis.
    • Immune complexes in mumps meningitis contain specific anti-mumps antibodies, highlighting the adaptive immune response.