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A Flow Cytometry-based Assay for Measuring Mitochondrial Membrane Potential in Cardiac Myocytes After Hypoxia/Reoxygenation
Published on: July 13, 2018
Unstable angina and elevated c-reactive protein levels predict enhanced vasoreactivity of the culprit lesion
F Tomai1, F Crea, A Gaspardone
1Cattedra di Cardiochirurgia, Università di Roma Tor Vergata, Rome, Italy. f.tomai@tiscalinet.it
Circulation
|September 26, 2001
Summary
Inflammation, indicated by C-reactive protein (CRP) levels, enhances coronary artery reactivity in patients with unstable angina. This suggests inflammatory mechanisms play a key role in modulating atherosclerotic plaque reactivity.
Area of Science:
- Cardiology
- Vascular Biology
- Inflammation Research
Background:
- Plaque inflammation may influence coronary vasomotion.
- Systemic C-reactive protein (CRP) levels are investigated for their association with coronary vasoreactivity.
Purpose of the Study:
- To assess the relationship between systemic CRP levels and coronary vasoreactivity in patients with stable or unstable angina.
- To determine if inflammation modulates coronary atherosclerotic plaque reactivity.
Main Methods:
- Quantitative coronary angiography was used to measure minimal luminal diameter (MLD) changes.
- Patients underwent a cold pressor test (CPT) and nitroglycerin (NTG) administration.
- Serum CRP levels were measured and categorized as normal or elevated.
Main Results:
- Unstable angina patients showed greater MLD reduction during CPT and increase after NTG compared to stable angina patients.
- Elevated CRP levels correlated with greater MLD reduction during CPT and increase after NTG.
- Multivariate analysis identified unstable angina and elevated CRP as independent predictors of enhanced vasoreactivity.
Conclusions:
- Enhanced vasoreactivity of the culprit lesion is confirmed in unstable angina patients.
- Inflammatory mechanisms, evidenced by CRP, significantly modulate coronary atherosclerotic plaque reactivity.
- Inflammation may partially explain the enhanced vasoreactivity observed in unstable plaques.
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