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Lymphocyte surface phenotypes in Down's syndrome.

A Bertotto, M S Lungarotti, F Gentili

    International Journal of Tissue Reactions
    |January 1, 1984
    PubMed
    Summary
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    Adults with Down syndrome (trisomy-21) show higher percentages of specific immune cells (OKT8+ and OKT10+ lymphocytes). These findings suggest potential immune system differences in Down syndrome.

    Area of Science:

    • Immunology
    • Genetics
    • Cell Biology

    Background:

    • Down syndrome, also known as trisomy-21, is a genetic disorder associated with various health complications.
    • Immune system dysregulation is frequently observed in individuals with Down syndrome, but specific cellular changes require further elucidation.

    Purpose of the Study:

    • To investigate differences in lymphocyte surface phenotypes between adults with trisomy-21 and karyotypically normal individuals.
    • To identify specific lymphocyte subsets that may be altered in Down syndrome.

    Main Methods:

    • Analysis of lymphocyte surface phenotypes using fluorescent microscopy.
    • Utilized the OKT series of monoclonal antibodies for cell identification.
    • Compared blood samples from 7 non-institutionalized adults with trisomy-21 and 10 normal control subjects.

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    Main Results:

    • No significant differences were observed in the proportions of OKT3+, OKT4+, and OKT6+ cells between the two groups.
    • Significantly higher percentages of OKT8+ and OKT10+ lymphocytes were found in individuals with trisomy-21 compared to controls.

    Conclusions:

    • The study identifies specific alterations in lymphocyte populations (increased OKT8+ and OKT10+ cells) in adults with Down syndrome.
    • These findings contribute to understanding the immunopathology of Down syndrome and may have implications for immune function in affected individuals.