Related Experiment Video
Updated: Aug 2, 2026

Cholesterol Efflux Assay
Published on: March 6, 2012
Cholesterol lowering with pravastatin improves resistance artery endothelial function: report of six subjects with
J L Houghton1, T A Pearson, R G Reed
1Division of Cardiology, Albany Medical College, Albany, NY 12208, USA. Houghtj@mail.amc.edu
Insights
Cholesterol lowering with pravastatin significantly improved coronary resistance artery endothelial function in patients with normal coronary arteries. This study highlights pravastatin
Area of Science:
- Cardiovascular Medicine
- Pharmacology
- Endothelial Function Research
Background:
- Cholesterol lowering improves coronary artery endothelial function in atherosclerosis.
- Limited data exists on cholesterol lowering's effect on resistance artery function in normal coronary arteries.
Purpose of the Study:
- To investigate pravastatin's effect on coronary resistance artery endothelial function.
- To assess changes in patients with angiographically normal coronary arteries.
Main Methods:
- Invasive testing of coronary endothelial and vasomotor function.
- Performed at baseline and after 6 months of pravastatin treatment.
- Study included six patients with normal coronary arteriograms.
Main Results:
- Pravastatin significantly reduced low-density lipoprotein cholesterol (157 to 117 mg/dL).
- Coronary blood flow response to acetylcholine improved significantly (97% to 160%).
- A trend towards enhanced epicardial dilation was observed.
Conclusions:
- Pravastatin improves coronary resistance artery endothelial function in patients with normal coronary arteries.
- Cholesterol lowering with pravastatin shows potential benefits beyond atherosclerosis.
- Further research into epicardial vasomotion trends is warranted.
Study Objectives:
Improvement in coronary artery endothelial function has been demonstrated after cholesterol lowering in hypercholesterolemic patients with significant atherosclerosis. However, to our knowledge, no previous study has shown improvement in resistance artery function in subjects with normal coronary arteries after cholesterol lowering. The purpose of our study was to investigate the effect of cholesterol lowering with pravastatin on coronary resistance artery endothelial function in the setting of angiographically normal coronary arteries.
Methods:
Invasive testing of coronary endothelial and vasomotor function was performed at baseline and after 6 months of pravastatin treatment in six patients with normal coronary arteriograms.
Results:
After 6 months of pravastatin treatment, low-density lipoprotein cholesterol level dropped from 157+/-11 to 117+/-8 mg/dL (p = 0.02) and percent increase in coronary blood flow after acetylcholine improved from 97+/-13% to 160+/-16% (p = 0.01). There was a trend (p = 0.17) toward enhanced epicardial dilation in response to acetylcholine after pravastatin treatment when compared with the baseline study.
Conclusions:
Our study demonstrates significant improvement in coronary resistance artery endothelial function after 6 months of cholesterol lowering with pravastatin in six subjects presenting with chest pain who were found to have normal coronary arteriograms. A trend toward improved epicardial vasomotion was also observed.
More Related Videos
Related Concept Videos
Lipid-Lowering Drugs: Statins and Miscellaneous Agents
Coronary Artery Disease II: Pathophysiology
Coronary Artery Disease IV: Preventive Measures
Coronary Artery Disease V: Interprofessional Care
Atherosclerosis III: Management
Peripheral Artery Disease III: Interprofessional Care

