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Related Experiment Videos

Antigen specific suppressor cell function in autoimmune chronic active hepatitis.

S Vento, J E Hegarty, G Bottazzo

    Lancet (London, England)
    |June 2, 1984
    PubMed
    Summary
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    Patients with autoimmune chronic active hepatitis (CAH) show abnormal immune responses to liver specific protein (LSP), indicating a potential defect in suppressor T cells crucial for CAH pathogenesis.

    Area of Science:

    • Immunology
    • Hepatology
    • Autoimmunity

    Background:

    • Autoimmune chronic active hepatitis (CAH) is an immune-mediated liver disease.
    • The role of T lymphocytes in the pathogenesis of autoimmune CAH is not fully understood.

    Purpose of the Study:

    • To investigate the immune response to liver specific protein (LSP) in patients with autoimmune CAH.
    • To identify potential defects in T lymphocyte function associated with autoimmune CAH.

    Main Methods:

    • Indirect migration inhibition assay using lymphocytes and liver specific protein (LSP).
    • Co-culture experiments with T cells from patients and healthy controls.
    • Assessment of T lymphocyte migration inhibitory factor (T-LIF) generation.

    Main Results:

    Related Experiment Videos

    • Lymphocytes from 26/29 autoimmune CAH patients generated T-LIF in response to LSP, unlike controls or patients with HBsAg-positive chronic liver disease.
    • T cells from autoimmune CAH patients suppressed T-LIF generation by normal T cells but not by other CAH T cells.
    • Pretreatment of normal T cells with cimetidine or mitomycin-C abolished their inhibitory effect on CAH T cells.

    Conclusions:

    • A defect in specific suppressor T cells controlling the immune response to LSP likely exists in autoimmune CAH.
    • This defect is unaffected by disease activity or treatment and may be fundamental to CAH pathogenesis.