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Related Experiment Videos

Changes in T-lymphocyte subsets during acute rheumatic fever.

R C Williams, V Raizada, K Prakash

    Journal of Clinical Immunology
    |July 1, 1982
    PubMed
    Summary

    Acute rheumatic fever significantly alters T-lymphocyte subsets in children. Both helper (OKT4(+)) and suppressor (OKT8(+)) cell numbers decrease, indicating profound immune system changes during illness.

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    Area of Science:

    • Immunology
    • Pediatrics
    • Rheumatology

    Background:

    • Rheumatic fever is an inflammatory condition affecting children.
    • T-lymphocytes play a crucial role in immune responses.
    • Understanding immune cell alterations in rheumatic fever is important for management.

    Purpose of the Study:

    • To investigate the proportions and numbers of helper (OKT4(+)) and suppressor (OKT8(+)) T-lymphocytes in children with acute rheumatic fever.
    • To compare these T-cell subsets in patients with healthy controls.

    Main Methods:

    • Peripheral blood lymphocytes were analyzed from 32 young patients during acute rheumatic fever.
    • Flow cytometry was used to identify and quantify T-lymphocyte subsets (OKT4(+) and OKT8(+)).
    • Comparisons were made with age-matched healthy children.

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    Main Results:

    • No significant decrease in the percentage of total T cells was observed.
    • Absolute numbers of helper (OKT4(+)) T cells were reduced in patients not on corticosteroids.
    • Significant decreases in both proportion and number of suppressor (OKT8(+)) T cells were found during acute attacks.

    Conclusions:

    • Acute rheumatic fever is associated with significant reductions in both helper and suppressor T-lymphocyte populations in peripheral blood.
    • These findings suggest profound immune dysregulation during acute rheumatic fever in children.
    • Further research may explore therapeutic implications of these T-cell alterations.