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Published on: April 4, 2022
Pharmacotherapy of coronary atherosclerosis
Aloke V Finn1, Miranda C A Kramer, Marc Vorpahl
1Emory University School of Medicine, Atlanta, Georgia, USA.
Insights
Statins are limited in preventing myocardial infarction, highlighting the need for new treatments targeting atherosclerosis plaque complexity beyond lipid lowering. Future therapies require advanced imaging and pharmacologic agents to modify plaque characteristics.
Area of Science:
- Cardiovascular Medicine
- Pharmacology
- Medical Imaging
Background:
- Atherosclerosis remains a leading cause of myocardial infarction, with statins proving ineffective for many patients.
- Current treatments focusing solely on lipid lowering do not fully address the complex pathology of atherosclerosis.
- Limitations in characterizing atherosclerotic lesions hinder personalized risk assessment and treatment strategies.
Purpose of the Study:
- To highlight the limitations of current atherosclerosis pharmacotherapy and imaging.
- To emphasize the need for novel therapeutic targets beyond lipid reduction.
- To underscore the requirement for advanced methods to characterize plaque histology in vivo.
Main Methods:
- Review of current pharmacotherapy limitations for atherosclerosis.
- Analysis of challenges in current medical imaging for plaque characterization.
- Discussion of critical plaque components requiring therapeutic intervention.
Main Results:
- Statins are ineffective in preventing myocardial infarction for approximately two-thirds of patients.
- Existing imaging modalities cannot adequately characterize non-flow limiting lesions.
- Key plaque features like macrophage foam cells, neoangiogenesis, necrotic core size, and fibrous cap thickness need modification.
Conclusions:
- Novel pharmacologic agents and refined monitoring are essential for effective atherosclerosis treatment.
- Targeting specific plaque components is crucial for improving patient outcomes.
- Advancements in understanding and modifying atherosclerotic plaque are necessary for better prevention of myocardial infarction.
Abstract:
Despite advances in the pharmacotherapy of atherosclerosis, the most successful agents used to treat this disease - statins - remain ineffective for the primary or secondary prevention of myocardial infarction in about two-thirds of patients. The lack of a more robust treatment effect underscores the limitations of lipid lowering alone and emphasizes the complexity of the disease and the need for targeting other critical processes. Further, despite the rapid progress in newer imaging modalities, the inability adequately to characterize lesions in individual patients beyond simple angiographic terms presents another problem. We need to be able to understand in living patients the histologic characteristics of non-flow limiting lesions and how these relate to risk for future events. Moreover, we also need to be able to modify critical elements within the atherosclerotic plaque, specifically macrophage foam cells, neoangiogenesis, necrotic core size, and fibrous cap thickness. These advancements will require newer pharmacologic agents and clinical refinements in the monitoring of treatment effects.
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