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Platelets and Platelet Inhibitors in Infective Endocarditis
1Service de Maladies Infectieuses et Tropicales, University of Besançon Medical Center, F-25030 Besançon Cedex, France. bruno.h oen@ufc-chu.univ-fcomte.fr
Current Infectious Disease Reports
|July 20, 2002
Summary
Platelets play a dual role in infective endocarditis, aiding bacterial adherence and host defense. While aspirin reduced disease severity in animal models, its clinical benefit in humans remains unproven.
Area of Science:
- Cardiovascular Medicine
- Infectious Diseases
- Hematology
Background:
- Infective endocarditis pathogenesis involves complex interactions between pathogens, host proteins, platelets, and endothelial cells.
- Platelets are crucial targets for bacterial adherence and also contribute to antimicrobial defense via platelet microbicidal proteins.
Purpose of the Study:
- To investigate the role of platelets in infective endocarditis.
- To evaluate the potential therapeutic benefit of aspirin in infective endocarditis.
Main Methods:
- Review of the current understanding of infective endocarditis pathogenesis.
- Analysis of findings from animal models of infective endocarditis treated with aspirin.
Main Results:
- Platelets are involved in both bacterial adherence and host defense mechanisms in infective endocarditis.
- Low-dose aspirin significantly reduced vegetation weight, bacterial load, dissemination, and embolic events in animal models.
Conclusions:
- Platelets have a complex role in infective endocarditis, acting as both a target for bacteria and a component of the host defense.
- Despite promising results in animal models, the adjunctive benefit of aspirin in human infective endocarditis requires further definitive clinical proof.