LDL-Cholesterol and Platelets: Insights into Their Interactions in Atherosclerosis
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Published on: November 10, 2017
Aleksandra Gąsecka1, Sylwester Rogula1, Łukasz Szarpak2,3
1Department of Cardiology, Medical University of Warsaw, 02-091 Warsaw, Poland.
Insights
Oxidized low-density lipoproteins (ox-LDL) directly interact with platelets, promoting thrombus formation and contributing to atherosclerosis. Understanding these interactions may lead to new prevention strategies.
Area of Science:
- Cardiovascular Research
- Hematology
- Lipid Metabolism
Background:
- Atherosclerosis is a leading cause of global mortality.
- Key mechanisms include platelet activation and elevated low-density lipoprotein (LDL) levels.
- Oxidized LDL (ox-LDL) exhibits pro-thrombotic properties, unlike native LDL.
Purpose of the Study:
- To review evidence on LDL-cholesterol and platelet interactions in atherosclerosis.
- To explore the clinical implications and therapeutic potential of these interactions.
Main Methods:
- Literature review summarizing current evidence.
- Focus on ox-LDL binding sites on platelets.
- Examination of ox-LDL generation by platelets.
- Analysis of the roles of activated platelets and ox-LDL in atherogenesis.
Main Results:
- Platelets possess binding sites for ox-LDL.
- Platelets can generate ox-LDL.
- Activated platelets and ox-LDL synergistically promote thrombus formation and atherosclerosis.
Conclusions:
- Interactions between LDL-cholesterol and platelets are critical in atherosclerosis.
- Modulating these interactions offers potential for novel therapeutic strategies.
- Understanding platelet-ox-LDL pathways is key for atherosclerosis prevention.
Abstract:
Atherosclerosis and its complications, including acute coronary syndromes, are the major cause of death worldwide. The two most important pathophysiological mechanisms underlying atherosclerosis include increased platelet activation and increased low-density lipoproteins (LDL) concentration. In contrast to LDL, oxidized (ox)-LDL have direct pro-thrombotic properties by functional interactions with platelets, leading to platelet activation and favoring thrombus formation. In this review, we summarize the currently available evidence on the interactions between LDL-cholesterol and platelets, which are based on (i) the presence of ox-LDL-binding sites on platelets, (ii) generation of ox-LDL by platelets and (iii) the role of activated platelets and ox-LDL in atherosclerosis. In addition, we elaborate on the clinical implications of these interactions, including development of the new therapeutic possibilities. The ability to understand and modulate mechanisms governing interactions between LDL-cholesterol and platelets may offer new treatment strategies for atherosclerosis prevention.
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