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Effect of converting enzyme inhibitors on hypertensive large arteries in humans
Insights
Converting enzyme inhibitors (CEI) dilate both small and large arteries in hypertensive individuals. These drugs improve arterial compliance, potentially reversing hypertension-related arterial stiffening.
Area of Science:
- Cardiovascular Medicine
- Pharmacology
Background:
- Essential hypertension is characterized by reduced arterial compliance.
- Arterial stiffness contributes to cardiovascular risk in hypertensive patients.
Purpose of the Study:
- To investigate the effects of converting enzyme inhibitors (CEI) on large artery dilation and compliance in hypertensive humans.
- To determine if CEI can reverse arterial stiffening associated with essential hypertension.
Main Methods:
- Non-invasive Doppler methods were used to assess arterial function.
- Measurements were taken in brachial and carotid circulations.
Main Results:
- Converting enzyme inhibitors (CEI) demonstrated a dilating effect on both small and large arteries.
- CEI enhanced systemic and brachial arterial compliance.
- These effects suggest a direct action on arterial smooth muscle.
Conclusions:
- Converting enzyme inhibitors (CEI) effectively dilate large arteries in hypertensive individuals.
- CEI can improve arterial compliance, offering a potential mechanism to reverse arterial stiffening in essential hypertension.
Abstract:
As demonstrated in hypertensive humans on the basis of non-invasive Doppler methods, converting enzyme inhibitors (CEI) dilate not only small arteries but also large arteries, particularly in the brachial and the carotid circulations. The dilating effect of CEI on large arteries is associated with an enhancement of systemic and brachial arterial compliance, implying a particular action of the drug on arterial smooth muscle. Converting enzyme inhibitors are thus able to reverse the reduced arterial compliance observed in patients with essential hypertension.