Key result
Myocarditis linked to ~100% higher prevalence of ventricular antimyosin autoantibodies vs other cardiac diseases.
Why the study?
Autoimmunologic mechanisms and circulating cardiac myosin autoantibodies were shown in animal myocarditis, but their presence in patients with myocarditis required investigation.
Is the prevalence of antimyosin autoantibodies higher in patients with myocarditis compared to healthy controls and patients with other cardiac diseases?
Population
Patients with myocarditis, healthy blood donors, alcoholic cardiomyopathy, and other cardiac diseases
Comparison
Myocarditis vs healthy blood donors, alcoholic cardiomyopathy, and other cardiac diseases
Design
Case-control study
Authors
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May indicate autoimmune role in myocarditis; hypothesis-generating and requires prospective validation before diagnostic or therapeutic use.
Case-Control (n=134)
Is the prevalence of antimyosin autoantibodies higher in patients with myocarditis compared to healthy controls and patients with other cardiac diseases?
Absolute Event Rate: 42% vs 21%
p-value: p=<0.05
Patients with myocarditis have a significantly higher prevalence of circulating IgG autoantibodies against human ventricular myosin compared to healthy individuals and those with other cardiac diseases, suggesting an autoimmune component in the pathogenesis.
Lauer et al. (1994) conducted a case-control in Myocarditis (n=134). Myocarditis vs. Healthy blood donors, alcoholic cardiomyopathy, and other cardiac diseases was evaluated on Presence of autoantibodies against human ventricular myosin (p=<0.05). Myocarditis was associated with a significantly higher prevalence of autoantibodies against human ventricular myosin (42%) compared to patients with other cardiac diseases (21%, p<0.05).
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