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Related Experiment Videos

Mixed connective tissue disease.

W Minkin, N Rabhan

    Archives of Dermatology
    |November 1, 1976
    PubMed
    Summary
    This summary is machine-generated.

    This study highlights key features of mixed connective tissue disease (MCTD), including Raynaud phenomenon and arthritis. A specific antibody test is crucial for diagnosing MCTD, showing reduced titers after ribonuclease pretreatment.

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    Area of Science:

    • Rheumatology
    • Immunology
    • Internal Medicine

    Background:

    • Mixed Connective Tissue Disease (MCTD) is an autoimmune disorder with overlapping features of other connective tissue diseases.
    • Diagnosis often relies on specific autoantibodies, particularly to extractable nuclear antigens.

    Observation:

    • Three patients presented with characteristic MCTD symptoms: Raynaud phenomenon, arthritis, myositis, and swollen hands.
    • High titers of antibody to extractable nuclear antigen were detected in all patients.
    • Speckled antinuclear antibodies were consistently observed.

    Findings:

    • A diagnostic marker for MCTD involves antibody titers to extractable nuclear antigen.
    • These specific antibody titers significantly decrease or disappear when red blood cells are pretreated with ribonuclease.

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  • MCTD patients exhibit a low incidence of renal disease.

    • Implications:

    • The findings aid in the specific diagnosis and understanding of Mixed Connective Tissue Disease.
    • The ribonuclease pretreatment method offers a refined diagnostic approach for MCTD.
    • Patients with MCTD demonstrate responsiveness to prednisone and generally have a favorable prognosis.