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Updated: Sep 30, 2026

Ultrasound Assessment of Endothelial-Dependent Flow-Mediated Vasodilation of the Brachial Artery in Clinical Research
Published on: October 22, 2014
Effects of cerivastatin on vascular function of human radial and left internal thoracic arteries
Koki Nakamura1, Sharif Al-Ruzzeh, Adrian H Chester
1National Heart and Lung Institute, Heart Science Centre, Harefield Hospital, Middlesex, United Kingdom.
Insights
Statins like cerivastatin preserve arterial function after coronary bypass surgery. This study shows statins protect radial artery function over time, improving vasodilation.
Area of Science:
- Cardiovascular Science
- Pharmacology
- Vascular Biology
Background:
- Statins may improve vascular function beyond cholesterol reduction.
- Investigating statins' effect on coronary artery bypass graft vascular recovery.
Purpose of the Study:
- To assess statin modulation of vascular recovery in coronary bypass graft arteries.
- To determine if cerivastatin preserves endothelial function in radial and internal thoracic arteries.
Main Methods:
- Radial artery and left internal thoracic artery specimens collected during coronary artery bypass grafting.
- Vascular rings incubated with or without cerivastatin (10(-6) mol/L) for 2 or 24 hours.
- Endothelial function assessed via organ bath technique using acetylcholine after endothelin-1 contraction.
Main Results:
- Radial artery: Cerivastatin preserved endothelium-dependent vasodilation at 24 hours (68.4% +/- 5.0%) compared to controls (39.4% +/- 4.7%, p < 0.01).
- Left internal thoracic artery: No significant difference in vasodilation between cerivastatin and control groups at 2 or 24 hours.
- Time-dependent endothelial dysfunction observed in control radial arteries, but not in cerivastatin-treated arteries.
Conclusions:
- Cerivastatin significantly preserves endothelium-dependent vasodilation in radial arteries over time.
- Statins may play a crucial role in maintaining graft patency and function in coronary artery bypass grafting.
- Findings suggest potential clinical benefits of statins in enhancing coronary artery bypass graft outcomes.
Background:
Statins may enhance vascular function independently of effects on cholesterol. This study investigated the ability of statins to modulate the vascular recovery of arteries used as coronary bypass grafts.
Methods:
Specimens of radial artery and left internal thoracic artery were obtained during coronary artery bypass grafting. The specimens were divided into vascular rings, which were incubated in the absence or presence of cerivastatin (10(-6) mol/L) for either 2 or 24 hours. Using an organ bath technique, endothelial function was examined using acetylcholine (10(-9) to 10(-5) mol/L) after contraction by 3x10(-8) mol/L of endothelin-1.
Results:
Time-related endothelial dysfunction was shown in the control group of radial artery but not in the cerivastatin group: maximal endothelium-dependent vasodilation in the control and cerivastatin groups were 56.8% +/- 10.2% and 65.9% +/- 10.1% at 2 hours and 39.4% +/- 4.7% and 68.4% +/- 5.0% (p < 0.01, vs control) at 24 hours, respectively. On the other hand, in the left internal thoracic artery, those in the control and cerivastatin groups were 38.3% +/- 8.2% and 45.0% +/- 5.5% at 2 hours and 38.1% +/- 8.2% and 56.5% +/- 8.8% at 24 hours, respectively (NS).
Conclusions:
In radial artery, cerivastatin significantly preserved endothelium-dependent vasodilation, which diminished with time in the control group. This could have very important implications in the clinical practice of coronary artery bypass grafting.
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