Smooth-muscle antibodies and other tissue antibodies in cytomegalovirus infection

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Published on: July 10, 2014

P Andersen, H K Andersen

    Clinical and Experimental Immunology
    |October 1, 1975
    PubMed

    Insights

    Smooth-muscle antibodies (SMA) are frequently detected in patients with cytomegalovirus (CMV) infection, particularly in early disease stages. These antibodies, mainly IgM, decrease faster than CMV antibodies, suggesting a role in CMV immune response.

    Area of Science:

    • Immunology
    • Virology
    • Autoimmunity

    Background:

    • Cytomegalovirus (CMV) infection is common and can elicit various immune responses.
    • The presence and significance of autoantibodies during viral infections are of clinical interest.

    Purpose of the Study:

    • To investigate the association between smooth-muscle antibodies (SMA) and cytomegalovirus (CMV) infection.
    • To characterize the immunoglobulin classes and temporal dynamics of SMA in CMV-infected patients.

    Main Methods:

    • Sera from 63 CMV antibody-positive patients and 40 CMV antibody-negative donors were tested for SMA.
    • Immunoglobulin classes (IgG, IgM, IgA) of SMA were analyzed.
    • Anti-nuclear antibodies (ANA) and other autoantibodies were also assessed.

    Main Results:

    • SMA were detected in 16% of CMV-positive patients versus 0% of controls (P = 0.005).
    • SMA were primarily IgG and IgM, with IgM predominant in early CMV infection and decreasing faster than CMV antibodies.
    • ANA were more frequent in CMV-positive sera, often co-occurring with SMA.

    Conclusions:

    • SMA are significantly associated with CMV infection, particularly in the early phase.
    • The presence of SMA, especially IgM, may serve as an indicator of acute or recent CMV infection.
    • Further research is warranted to elucidate the precise role of SMA in the immunopathogenesis of CMV.

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