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Published on: June 20, 2014
Infectious myocarditis: the role of the cardiac vasculature
Linde Woudstra1,2, Lynda J M Juffermans3,4,5, Albert C van Rossum3,4,5
1Department of Pathology, VU University Medical Center, (room 0E46), De Boelelaan 1117, 1081, HV, Amsterdam, The Netherlands. l.woudstra@vumc.nl.
Insights
Infectious myocarditis involves the heart's immune response to infection. This review details how cardiac blood vessels, targeted by microbes, influence myocarditis development and severity.
Area of Science:
- Cardiology
- Immunology
- Pathology
Background:
- Infectious myocarditis stems from an immune response to microbial heart infections.
- The heart's blood vessels are crucial in the disease's development.
Purpose of the Study:
- To review the role of cardiac (micro)vasculature in infectious myocarditis pathogenesis.
- To highlight the impact of vascular dysfunction on myocardial health.
Main Methods:
- Literature review focusing on the cardiac vasculature in infectious myocarditis.
- Analysis of endothelial cell infection, immune cell interactions, and vascular dysfunction.
Main Results:
- Cardiac endothelial cells are direct targets of microbial infection.
- Vascular adhesion and antigen-presenting molecules modulate immune responses.
- Vascular damage leads to thrombus formation, vasospasm, and impaired cardiac perfusion.
Conclusions:
- The cardiac vasculature is central to infectious myocarditis pathogenesis.
- Vascular dysfunction contributes to severe outcomes like myocardial infarction.
- Understanding vascular roles can inform therapeutic strategies for infectious myocarditis.
Abstract:
Infectious myocarditis is the result of an immune response to a microbial infection of the heart. The blood vessels of the heart, both the intramyocardial microvasculature and the large epicardial coronary arteries, play an important role in the pathogenesis of infectious myocarditis. First of all, in addition to cardiomyocytes, endothelial cells of the cardiac (micro)vasculature are direct targets for infection. Moreover, through the expression of adhesion molecules and antigen presenting Major Histocompatibility Complex molecules, the blood vessels assist in shaping the cellular immune response in infectious myocarditis. In addition, damage and dysfunction of the cardiac (micro)vasculature are associated with thrombus formation as well as aberrant regulation of vascular tone including coronary vasospasm. These in turn can cause cardiac perfusion abnormalities and even myocardial infarction. In this review, we will discuss the role of the cardiac (micro)vasculature in the pathogenesis of infectious myocarditis.
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