Inflammatory mechanisms

Area of Science:

• Cardiology
• Pathophysiology
• Pharmacology

Background:

• Traditional views on acute coronary syndromes (ACS) pathogenesis are evolving.
• High-risk lesions in ACS are now understood to be characterized by plaque composition rather than solely by angiographic severity.
• Plaque instability, driven by intra-intimal inflammation, is a key factor in ACS development.

Purpose of the Study:

• To review recent advancements in understanding ACS pathogenesis.
• To highlight the shift towards plaque stabilization as a therapeutic target.
• To discuss the role of statins in modulating inflammatory responses for lesion stabilization.

Main Methods:

• Literature review of recent studies on ACS pathogenesis.
• Analysis of findings related to high-risk plaque characteristics (lipid core, fibrous cap).
• Examination of evidence linking inflammation to plaque instability and therapeutic interventions.

Main Results:

• High-risk lesions are defined by large lipid cores and thin fibrous caps, irrespective of angiographic severity.
• Inflammation within the intima is a critical determinant of plaque instability.
• Statins show potential in stabilizing lesions by modulating the inflammatory cascade.

Conclusions:

• Plaque stabilization represents a novel therapeutic strategy for managing acute coronary syndromes.
• Understanding the inflammatory basis of plaque instability is crucial for clinical practice.
• Statins may offer benefits beyond lipid-lowering by stabilizing vulnerable atherosclerotic plaques.