Related Experiment Videos
Immunologic regulator and effector mechanisms in myocarditis and perimyocarditis
Heart and Vessels. Supplement
|January 1, 1985
Summary
Viral heart disease involves specific antimyolemmal antibodies (AMLA) that target cardiocytes, indicating a cross-reactive immune response. These antibodies are pathogenetic, causing cell damage and influencing immune effector mechanisms in myocarditis patients.
Area of Science:
- Immunology
- Cardiology
- Virology
Background:
- Myocarditis and perimyocarditis diagnosis and etiology are challenging.
- Viral infections are a significant cause of heart disease.
Purpose of the Study:
- Investigate immune mechanisms in viral heart disease (Coxsackie B3, influenza, EBV, mumps).
- Characterize antibody responses and cellular effector functions in patients.
Main Methods:
- Immunofluorescence assays to detect antibodies (AMLA) against cardiocytes.
- In vitro studies of antibody-mediated cytolysis of cardiocytes.
- Measurement of circulating immune complexes and NK-cell activity.
Main Results:
- Characteristic AMLA detected in viral carditis, cross-reactive with causative viruses.
- AMLA induce cardiocyte cytolysis in vitro, confirming pathogenetic relevance.
- Increased OKIA1-positive cells; decreased NK-cell activity observed.
Conclusions:
- AMLA are key diagnostic and pathogenetic markers in viral myocarditis.
- Immune responses in viral carditis involve both humoral and cellular components.
- Specific cytotoxic mechanisms may be altered in viral heart disease.