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Related Experiment Videos

Lymphocyte subpopulations in primary immunodeficiency disorders.

E G Davies, R J Levinsky, M Butler

    Archives of Disease in Childhood
    |May 1, 1983
    PubMed
    Summary

    This study analyzed lymphocyte subpopulations in children with primary immunodeficiency disorders. Findings reveal distinct T and B cell patterns in various immunodeficiencies, offering insights into disease mechanisms.

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    Area of Science:

    • Immunology
    • Pediatric Medicine
    • Cell Biology

    Background:

    • Primary immunodeficiency disorders (PIDs) are a heterogeneous group of genetic diseases affecting the immune system.
    • Understanding lymphocyte subpopulations is crucial for diagnosing and managing PIDs.

    Purpose of the Study:

    • To investigate lymphocyte subpopulations in children with PIDs.
    • To correlate specific immunophenotypes with different types of primary immunodeficiencies.
    • To explore potential therapeutic targets, such as thymic hormones.

    Main Methods:

    • Analysis of venous blood mononuclear cells from 42 children with PIDs and age-matched controls.
    • Utilized E rosetting, surface immunoglobulin staining, and anti-T cell monoclonal antibodies (OKT series).

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  • Studied T cell subsets, including helper (OKT4) and suppressor (OKT8) cells, and OKT10 expression.

    • Main Results:

    • Severe combined immunodeficiency (SCID) cases showed markedly reduced T or B cells, with some SCID cases having normal/high B cells but few T cells.
    • One child presented with immature T and B cell patterns. Cartilage hair hypoplasia with immunodeficiency showed a low OKT4/OKT8 ratio and high OKT10+ cells.
    • X-linked agammaglobulinaemia lacked B cells but had normal T cell markers; common variable hypogammaglobulinaemia showed variable OKT4/OKT8 ratios.

    Conclusions:

    • Distinct lymphocyte subpopulation profiles are associated with specific primary immunodeficiency disorders.
    • Immunophenotyping provides valuable diagnostic information for pediatric PIDs.
    • Limited efficacy of thymic hormone (TP5) observed in a small treatment group.