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Lymphocyte subpopulation changes by aging.

G Bátory, E Beregi, G G Petrányi

    Archives of Gerontology and Geriatrics
    |September 1, 1982
    PubMed
    Summary
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    This study reveals age-related shifts in T-cell and B-cell subpopulations, suggesting in vivo lymphocyte activation contributes to immune system changes in aging. These findings highlight the importance of monitoring lymphocyte populations for age-dependent functional alterations.

    Area of Science:

    • Immunology
    • Gerontology
    • Cell Biology

    Background:

    • The aging immune system exhibits altered T-cell and B-cell functions.
    • Understanding lymphocyte subpopulation dynamics is crucial for assessing immune competence in elderly individuals.

    Purpose of the Study:

    • To quantify age-dependent changes in peripheral blood lymphocyte subpopulations.
    • To investigate the expression of various cell surface markers and receptors on lymphocytes from young and aged subjects.

    Main Methods:

    • Analysis of E-rosetting cells, alpha-naphthylacetate esterase positive cells, and cells expressing IgG-Fc and C3 receptors.
    • Determination of surface and intracytoplasmic immunoglobulin-bearing cells.
    • Utilized three distinct rosette techniques for E-rosetting cell enumeration.

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    Main Results:

    • Significant age-dependent alterations were observed in both T-cell and B-cell subpopulations.
    • Evidence suggests in vivo activation of lymphocytes may contribute to observed age-related changes.
    • Quantitative changes in lymphocyte proportions correlate with age-dependent functional shifts.

    Conclusions:

    • Aging impacts lymphocyte subpopulations, affecting immune surveillance and response.
    • Technical considerations in lymphocyte subpopulation analysis are critical for accurate interpretation.
    • Monitoring lymphocyte profiles offers insights into age-related immune system modifications.