Platelet activation in coronary artery disease
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Updated: Nov 8, 2026

Comprehensive Analysis of Procoagulant Platelets Exhibiting Features of Necrosis, Apoptosis and Platelet Activation
Published on: May 23, 2025
1Department of Haematology, Royal London Hospital, Whitechapel, England, UK.
Insights
Platelets play a key role in coronary artery disease by forming arterial thrombi and contributing to atheroma development. An increased proportion of activated platelets circulate in patients with coronary artery disease.
Area of Science:
- Cardiovascular Science
- Hematology
Background:
- Platelets are crucial components of arterial thrombi.
- Platelet activation contributes to atheroma and smooth muscle hypertrophy.
- Platelets circulate as inactive spheres, undergoing activation to become functional.
Purpose of the Study:
- To review the evidence for platelet activation in coronary artery disease.
- To examine the role of platelets in the development of arterial thrombi and atheroma.
Main Methods:
- This is a review article, examining existing evidence.
- The review focuses on the functional changes of platelets.
Main Results:
- Platelet activation is observed during acute coronary events.
- An increased proportion of activated platelets circulate in patients with coronary artery disease.
- Elevated activated platelet proportions are also seen in other thrombotic disease states.
Conclusions:
- Platelets are increasingly recognized for their significant role in coronary artery disease.
- Evidence suggests a higher prevalence of activated platelets in patients with coronary artery disease and thrombosis-related conditions.
Abstract:
The role of platelets in coronary artery disease has become increasingly apparent in the last decade. Platelets are the main components of arterial thrombi, and they also contribute to the development of atheroma and smooth muscle hypertrophy in arterial walls. Platelets are known to circulate as round, inactive spheres which undergo a succession of changes before they become functional. These changes result in activated platelets. Platelet activation has been demonstrated during acute coronary events. There is increasing evidence that an increased proportion of platelets circulate in an activated form in patients with coronary artery disease and also in other disease states in which thrombosis is a feature. In this review we examine some of the evidence for these statements.
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