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C-reactive protein and rapidly progressive coronary artery disease--is there any relation?
Michael N Zairis1, Stavros J Manousakis, Alexander S Stefanidis
1Department of Cardiology, Tzanio Hospital, Piraeus, Greece. zairis66@yahoo.gr
Insights
High C-reactive protein (CRP) levels are linked to rapid progression of coronary artery disease (CAD). Elevated CRP identifies patients at higher risk for developing new or worsening atherosclerotic lesions.
Area of Science:
- Cardiovascular Medicine
- Inflammation Biology
- Medical Diagnostics
Background:
- High C-reactive protein (CRP) levels are associated with poor outcomes in coronary artery disease (CAD).
- CRP's direct role in atherosclerosis progression is hypothesized.
- Understanding CRP's impact on CAD progression is crucial for patient management.
Purpose of the Study:
- To investigate the association between elevated plasma CRP levels and rapid progression of coronary atherosclerosis (RPCAD).
- To determine if CRP can serve as a predictive marker for accelerated atherosclerotic development.
Main Methods:
- Studied 194 patients readmitted for symptom recurrence post-percutaneous coronary intervention.
- Utilized repeat coronary angiography with a median follow-up of 6 months.
- Defined RPCAD as new lesions (>25% stenosis) or significant deterioration of existing lesions.
Main Results:
- Multivariate analysis revealed higher risk of RPCAD in patients with elevated CRP.
- Patients with CRP 0.5-2 mg/dl had an odds ratio (OR) of 1.8 for RPCAD.
- Patients with CRP > 2 mg/dl showed a significantly higher OR of 7.1 for RPCAD.
Conclusions:
- Increased plasma CRP levels may identify patients at high risk for developing RPCAD.
- CRP could be a valuable biomarker for predicting accelerated atherosclerosis.
- Further research may elucidate CRP's specific mechanisms in CAD progression.
Background:
High plasma C-reactive protein (CRP) levels have been associated with an unfavorable outcome in patients with coronary artery disease (CAD), and a direct participation of CRP in the atherosclerotic process has been postulated.
Hypothesis:
The aim of this study was to evaluate the possible relationship of high plasma CRP levels with the rapid progression of coronary atherosclerosis (RPCAD).
Methods:
In all, 194 patients who were readmitted and underwent repeat coronary angiography because of recurrence of symptoms following successful percutaneous coronary intervention were studied. Median angiographic follow-up time was 6 months. Rapid progression CAD was defined as the presence of a new lesion, > 25% in luminal diameter stenosis, in a previously nondiseased vessel, or deterioration of a known, nontreated lesion by at least 25%.
Results:
By multivariate analysis, patients with high plasma CRP levels upon first admission were at higher risk of RPCAD. In particular, odds ration (OR) = 1.8; 95% confidence interval (CI) = 1.3-3.6; p value = 0.02 in patients with CRP = 0.5-2 mg/dl versus patients with CRP < 0.5 mg/dl, and OR = 7.1; 95% CI = 3.8-9.5; p value < 0.001 in patients with CRP > 2 mg/dl versus patients with CRP < 0.5 mg/dl.
Conclusion:
Increased plasma CRP levels could possibly identify patients at high risk for the development of RPCAD.