Abstract
Criteria of organ-specific autoimmunity are fulfilled in a subset of patients with myocarditis/dilated cardiomyopathy (DCM). In particular, circulating heart-reactive autoantibodies are found in such patients and symptom-free relatives. These autoantibodies are directed against multiple antigens, some of which are expressed in the heart (organ-specific), others in heart and some skeletal muscle fibres (partially heart-specific) or in heart and skeletal muscle (muscle-specific). Distinct autoantibodies have different frequency in disease and normal controls. Different techniques detect one or more antibodies, thus they cannot be used interchangeably for screening. It is unknown whether the same patients produce more antibodies or different patient groups develop autoimmunity to distinct antigens. IgG antibodies, shown to be cardiac- and disease-specific for myocarditis/DCM, can be used as autoimmune markers for relatives at risk as well as for identifying patients in whom immunosuppression may be beneficial. Some autoantibodies may also have a functional role, but further work is needed.
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Caforio, A.L.P., Mahon, N.G., McKenna, W.J. (2006). Clinical Implications of Anti-cardiac Immunity in Dilated Cardiomyopathy. In: Schultheiss, H.P., Kapp, J.F., Grötzbach, G. (eds) Chronic Viral and Inflammatory Cardiomyopathy. Ernst Schering Research Foundation Workshop, vol 55. Springer, Berlin, Heidelberg . https://doi.org/10.1007/3-540-30822-9_11
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DOI: https://doi.org/10.1007/3-540-30822-9_11
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