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Related Experiment Videos

Monocyte suppressor function in burns: T cell-monocyte interaction in mediating suppression.

N Lahat, L Hornstein, A R Moscona

    Immunology Letters
    |January 1, 1985
    PubMed
    Summary
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    Severe burn patients exhibit impaired T cell function and increased non-T cell activity, with monocytes suppressing T cell proliferation. Indomethacin may help restore immune response by reducing this suppression.

    Area of Science:

    • Immunology
    • Burn Injury Research
    • Cellular Immunology

    Background:

    • Severe burns significantly alter immune cell populations and function.
    • Patients exhibit reduced T cell responses and increased non-T cell activity, particularly B cells.
    • Monocytes play a crucial role in suppressing T cell proliferation post-burn.

    Purpose of the Study:

    • To investigate the cellular mechanisms underlying immune suppression in severe burn patients.
    • To explore the role of monocytes and T cells in Concanavalin A (Con A)-induced T cell suppression.
    • To evaluate the potential of indomethacin in mitigating immune suppression in burn patients.

    Main Methods:

    • Analysis of blood mononuclear cells from severe burn patients (3-12 days post-injury).

    Related Experiment Videos

  • Assessment of T cell mitogen-induced transformation and spontaneous non-T cell proliferation.
  • Investigation of monocyte-mediated suppression of T cell proliferation and Con A-activated T cell activity.
  • In vitro studies with and without indomethacin to assess its effect on lymphocyte proliferation.

    • Main Results:

    • Reduced T cell transformation and proportion, with increased non-T cells (mainly B cells) showing high spontaneous proliferation.
    • Monocytes suppressed mitogen-stimulated T cell proliferation.
    • T cells from burn patients suppressed proliferation in collaboration with monocytes.
    • Indomethacin significantly reduced lymphocyte proliferation suppression, particularly in non-activated cultures.

    Conclusions:

    • Severe burns induce a complex immune suppression involving both T cells and monocytes.
    • Monocytes and T cells from burn patients exhibit enhanced in vivo-stimulated suppressor activity.
    • Indomethacin shows promise as an adjuvant therapy to alleviate immune suppression in burn patients.