Key result
Endomyocardial MHC and IL-2 receptor expression marks acute rejection, myocarditis, and select dilated cardiomyopathy cases.
Why the study?
Alterations to the humoral and cellular immune system in myocarditis and dilated cardiomyopathy suggest a secondary immunopathogenesis, and rejection after heart transplantation may serve as a model for inflammatory heart disease.
Population
Patients after cardiac transplantation, myocarditis, and dilated cardiomyopathy undergoing endomyocardial biopsy
Comparison
Expression of MHC class I and II antigens and IL-2 receptor among rejection, myocarditis, and dilated cardiomyopathy
Design
Observational immunohistological study using immunoperoxidase test on cryostat sections
Authors
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Supports immune overlap in rejection and myocarditis; hypothesis-generating for secondary immunopathogenesis in dilated cardiomyopathy.
Observational
The study demonstrates shared immunological activation markers in cardiac rejection and myocarditis, suggesting a secondary immunopathogenesis in some patients with dilated cardiomyopathy.
Hufnagel et al. (1991) conducted an observational in Rejection after heart transplantation, myocarditis, and dilated cardiomyopathy. Myocarditis, dilated cardiomyopathy, and cardiac transplant rejection was evaluated on Expression of MHC class I and II antigens and the Il2 receptor. MHC class I and II antigens and the Il2 receptor are expressed in endomyocardial biopsies during acute rejection and myocarditis, and in some patients with dilated cardiomyopathy.
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