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[Coronary thrombosis--pathogenic basis of acute coronary syndromes]
Insights
Acute coronary syndromes result from atherosclerotic plaque rupture, leading to coronary artery occlusion via thrombosis. Understanding plaque instability and thrombin
Area of Science:
- Cardiovascular Medicine
- Pathophysiology
- Atherosclerosis Research
Context:
- Acute coronary syndromes (ACS) significantly contribute to cardiovascular morbidity and mortality.
- ACS pathogenesis involves atherosclerotic plaque instability and coronary artery occlusion.
- Key mechanisms include plaque rupture, vasoconstriction, and coronary thrombosis.
Purpose:
- To review the pathogenesis of coronary thrombosis in ACS.
- To examine the origin of unstable atherosclerotic plaques.
- To highlight the roles of vessel wall factors, rheology, and platelets.
Summary:
- Plaque rupture initiates ACS, leading to dynamic coronary artery occlusion.
- Coronary thrombosis is driven by vasoconstriction and thrombotic processes.
- Morphological characteristics of plaques and lesions in ACS are detailed.
- Thrombin and residual thrombosis are critical in clinical ACS management.
Impact:
- Provides insights into the pathogenetic aspects of coronary thrombogenesis.
- Justifies the development of novel therapeutic strategies for ACS.
- Highlights the importance of understanding thrombin's role in ACS treatment.
Abstract:
Acute coronary syndromes (unstable angina pectoris, acute myocardial infarction, sudden heart death) present an important part of cardiovascular and total morbidity and mortality. The common pathogenetic mechanism of them is the break of integrity of "stable" atherosclerotic plaque through fissure or rupture with following dynamic occlusion of coronary artery. In dynamic occlusion take part coronary vasoconstriction and dominant coronary thrombogenesis. Summary review of pathogenesis of coronary thrombosis aimed at origin of "unstable" atherosclerosis plaque, importance of vessel wall factors, rheologic factors and thrombocytes is presented in the paper. Morphologic and structural characteristics of "primary" atherosclerotic plaque and of coronary artery lesions in concrete acute coronary syndromes are described. From the point of view of clinical practice the authors draw attention to the basic importance of thrombin and residual thrombosis in acute coronary syndromes. Presented pathogenetic aspects of coronary thrombogenesis justify newer therapeutic approaches, which are in the phase of intensive research.