C-reactive protein: history and revival

Area of Science:

• Biochemistry
• Immunology
• Cardiovascular Medicine

Background:

• C-reactive protein (CRP) is a major acute-phase protein with diverse biological functions beyond inflammation marking.
• CRP is involved in innate host defense against pathogens and clearance of cellular debris.
• Inflammation is central to atherosclerosis, prompting investigation into CRP's role.

Purpose of the Study:

• To explore the multifaceted role of C-reactive protein (CRP) in the pathogenesis and progression of atherosclerosis.
• To elucidate whether CRP acts as a passive marker or an active participant in atherosclerotic processes.
• To establish the clinical significance of elevated CRP levels in predicting occlusive arterial disease.

Main Methods:

• Review of existing literature on CRP's biological properties and functions.
• Analysis of CRP's involvement in inflammatory pathways within atherosclerotic lesions.
• Correlation of CRP levels with the risk of atherosclerosis and related cardiovascular events.

Main Results:

• CRP exhibits opsonizing and complement-activating properties, contributing to host defense and tissue repair.
• CRP levels correlate with the inflammatory burden and instability of atherosclerotic plaques.
• Elevated CRP (approx. >3 mg/l) is a validated predictor of increased risk for occlusive arterial disease, particularly acute coronary syndromes.

Conclusions:

• C-reactive protein (CRP) has a dual role in atherosclerosis, reflecting disease activity and potentially driving inflammatory processes.
• Local CRP production within plaques suggests an active role in the inflammatory cascade.
• Elevated CRP levels are a significant risk factor for acute coronary syndromes and other occlusive arterial diseases.