Activity of the inflammatory process in different types of unstable atherosclerotic plaques

Area of Science:

• Cardiovascular biology
• Immunology
• Pathology

Background:

• Unstable plaques in coronary atherosclerosis pose a significant risk.
• Different plaque types (lipid, inflammatory erosive, degenerative necrotic) exhibit distinct characteristics.
• Understanding the inflammatory basis of plaque instability is crucial for risk stratification.

Purpose of the Study:

• To identify and study inflammatory biomarkers and chemoattractants in different types of unstable coronary plaques.
• To compare the inflammatory profiles of lipid, inflammatory erosive, and degenerative necrotic plaque types.
• To elucidate the role of inflammation in the development of various unstable plaque morphologies.

Main Methods:

• Analysis of inflammatory biomarkers and chemoattractants in male patients with coronary atherosclerosis.
• Characterization of unstable plaque types: lipid, inflammatory erosive, and degenerative necrotic.
• Quantitative measurement of interleukin-1 beta (IL-1β), IL-6, IL-8, IL-18, and monocyte chemotactic protein-1 (MCP-1) concentrations.

Main Results:

• Elevated concentrations of IL-1β, IL-6, IL-8, IL-18, and MCP-1 were observed in both inflammatory erosive and lipid plaque types.
• These inflammatory markers were significantly higher in lipid and inflammatory erosive plaques compared to the degenerative necrotic type.
• The findings indicate a shared inflammatory pathway contributing to the development of different unstable plaque subtypes.

Conclusions:

• Intensification of the inflammatory process is pivotal in the development of not only inflammatory and destructive but also lipid types of unstable atherosclerotic plaques.
• Specific inflammatory biomarkers are key indicators differentiating unstable plaque subtypes.
• Targeting inflammatory pathways may offer therapeutic strategies for managing diverse forms of coronary plaque instability.