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Updated: Apr 16, 2026

Comprehensive Analysis of Procoagulant Platelets Exhibiting Features of Necrosis, Apoptosis and Platelet Activation
Published on: May 23, 2025
Platelets and the complement cascade in atherosclerosis
Johannes Patzelt1, Admar Verschoor2, Harald F Langer3
1University Clinic for Cardiovascular Medicine, University of Tuebingen Tuebingen, Germany.
Insights
Platelets and the complement system interact in atherosclerosis, a major cause of death. Understanding this cross-talk offers new avenues for treating cardiovascular disease and its complications.
Area of Science:
- Cardiovascular Science
- Immunology
- Hematology
Background:
- Atherosclerosis is a leading cause of mortality, driven by inflammatory processes.
- Platelets play a critical role in both the development and acute complications of atherosclerosis.
- The complement system, a key part of innate immunity, is increasingly implicated in atherosclerosis.
Purpose of the Study:
- To review the intersection between platelets and the complement system in atherosclerosis.
- To discuss the roles of platelets and complement in disease onset and progression.
- To explore emerging literature on platelet-complement cross-talk and its impact on atherosclerosis.
Main Methods:
- Literature review focusing on platelet-complement interactions.
- Analysis of current research on immune mechanisms in atherosclerosis.
- Identification of research limitations and future therapeutic strategies.
Main Results:
- Platelets are central to atherosclerosis initiation and thrombotic events.
- Complement exhibits a potentially dual role in atherosclerosis development.
- Unrecognized cross-talk between platelets and complement significantly impacts atherosclerosis.
Conclusions:
- The interplay between platelets and complement is crucial in atherosclerosis.
- Targeting complement pathways presents a potential therapeutic strategy.
- Further research is needed to fully elucidate and leverage these interactions for disease control.
Abstract:
Atherosclerosis and its late sequels are still the number one cause of death in western societies. Platelets are a driving force not only during the genesis of atherosclerosis, but especially in its late stages, as evidenced by complications such as arterial thrombosis, myocardial infarction, and ischemic stroke. Atherosclerosis is increasingly recognized as an inflammatory disease, influenced by various immune mechanisms. The complement system is part of our innate immune system, and its diverse roles in atherosclerosis have become evident over the past years. In this review we identify points of intersection between platelets and the complement system and discuss their relevance for atherosclerosis. Specifically, we will focus on roles for platelets in the onset as well as progression of the disease, a possible dual role for complement in the genesis and development of atherosclerosis, and review emerging literature revealing previously unrecognized cross-talk between platelets and the complement system and discuss its possible impact for atherosclerosis. Finally, we identify limitations of current research approaches and discuss perspectives of complement modulation in the control of the disease.
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