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T lymphocyte subsets in uveitis.

R B Nussenblatt, M Salinas-Carmona, W Leake

    American Journal of Ophthalmology
    |May 1, 1983
    PubMed
    Summary
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    Peripheral T-cell subsets were analyzed in patients with intraocular inflammatory disease. Active posterior uveitis showed a decreased inducer/suppressor T-cell ratio, linked to increased suppressor T-cells.

    Area of Science:

    • Immunology
    • Ophthalmology

    Background:

    • Intraocular inflammatory diseases can involve complex immune dysregulation.
    • T-cell subsets play a critical role in modulating immune responses, including those in the eye.

    Purpose of the Study:

    • To investigate peripheral T-cell subset profiles in patients with intraocular inflammatory disease.
    • To determine if specific T-cell subset alterations correlate with disease activity or specific immune responses.

    Main Methods:

    • Peripheral blood T-lymphocyte subsets were quantified using the OKT series of monoclonal antibodies.
    • Laser cytofluorography was employed for quantitative fluorescence intensity measurements.
    • Comparison of T-cell subset ratios (OKT4/OKT8) between patients and controls, and across disease states.

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    Main Results:

    • No significant difference in the overall OKT4 (inducer) to OKT8 (suppressor) T-cell ratio was observed in all patients compared to controls.
    • A significantly decreased OKT4/OKT8 ratio was found in patients with active posterior uveitis (P < .05).
    • Patients with active posterior uveitis exhibited a significant increase in OKT8-positive (suppressor) T-lymphocytes (P < .01).
    • A significant decrease in the OKT4/OKT8 ratio was also noted in patients with positive in vitro cell-mediated responses to retinal S-antigen and active disease (P < .05).

    Conclusions:

    • Active posterior uveitis is associated with a specific imbalance in peripheral T-cell subsets, characterized by an increased proportion of suppressor T-cells.
    • This T-cell subset alteration may be relevant to the pathogenesis of intraocular inflammation and immune responses to retinal antigens.