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Isolation and Identification of Extravascular Immune Cells of the Heart
Published on: August 23, 2018
Immunomodulation and matrix metalloproteinases in viral myocarditis
Dirk Westermann1, Konstantinos Savvatis, Heinz-Peter Schultheiss
1Department of Cardiology and Pneumology, Charité-Universitätsmedizin Berlin, Campus Benjamin Franklin, Hindenburgdamm 30, 12200 Berlin, Germany. dirk.westermann@web.de
Abstract:
Myocarditis is an inflammatory disorder induced most commonly by infectious agents. The natural course of the disease is broad and ranges from complete recovery to dilated cardiomyopathy and death. The mechanisms of the incomplete recovery remain poorly understood but extracellular matrix remodelling by metalloproteinases seems to be important for the progression to dilated cardiomyopathy and chronic heart failure. The matrix metalloproteinases (MMPs) are proteolytic enzymes whose role was thought to be the degradation of matrix components only. In the last few years a considerable amount of evidence has gathered which shows new functions of the MMPs as powerful modulatory factors in inflammatory disorders. MMPs facilitate the migration of immune cells through the basement membrane, process cytokines and chemokines by modulating their function, and regulate the relationship of cells with ECM components. These findings enhance our knowledge of the role of MMPs in viral myocarditis and inflammatory cardiomyopathy and may lead to a new understanding which might allow for specific and successful therapeutic interventions in the future.
Insights
Matrix metalloproteinases (MMPs) play a crucial role in inflammatory disorders like myocarditis. Understanding their modulatory functions in immune responses and extracellular matrix remodeling is key for future therapeutic interventions.
Area of Science:
- Cardiology
- Immunology
- Biochemistry
Background:
- Myocarditis is an inflammatory condition with variable outcomes, from recovery to heart failure.
- Extracellular matrix remodeling by matrix metalloproteinases (MMPs) is implicated in progression to dilated cardiomyopathy.
- The precise mechanisms of incomplete recovery in myocarditis are not fully understood.
Purpose of the Study:
- To explore the multifaceted roles of matrix metalloproteinases (MMPs) in inflammatory disorders, particularly viral myocarditis.
- To elucidate how MMPs modulate immune cell migration, cytokine function, and cell-extracellular matrix interactions.
Main Methods:
- Literature review and analysis of recent evidence on MMP functions in inflammation.
- Focus on MMPs' roles beyond matrix degradation in the context of myocarditis.
Main Results:
- Matrix metalloproteinases (MMPs) are increasingly recognized for their modulatory functions in inflammation.
- MMPs facilitate immune cell migration, process cytokines/chemokines, and regulate cell-ECM interactions.
- These functions are critical in the pathogenesis of viral myocarditis and inflammatory cardiomyopathy.
Conclusions:
- Matrix metalloproteinases (MMPs) are key players in the inflammatory processes of myocarditis.
- A deeper understanding of MMPs' functions offers potential for targeted therapeutic strategies.
- Future research may lead to novel interventions for inflammatory cardiomyopathy and chronic heart failure.
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