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Calcium-entry blockers and arterial compliance in hypertension
M E Safar1, B Pannier, S Laurent
1Department of Internal Medicine, Broussais Hospital, Paris, France.
Insights
Calcium-entry blockers improve arterial compliance in both small and large arteries. These medications can reverse hypertension-related arterial stiffening, benefiting cardiovascular health.
Area of Science:
- Pharmacology
- Cardiovascular Medicine
- Vascular Biology
Background:
- Essential hypertension is linked to reduced arterial compliance.
- Arterial stiffness impacts cardiovascular structure and function.
- Calcium-entry blockers are widely used antihypertensive agents.
Purpose of the Study:
- To investigate the effects of calcium-entry blockers on arterial compliance.
- To determine if these effects are related to blood pressure reduction.
- To assess the potential of calcium-entry blockers to reverse arterial stiffening in hypertension.
Main Methods:
- The study examined the vasodilatory effects of calcium-entry blockers.
- Systemic and brachial arterial compliance were measured.
- Changes in arterial compliance were correlated with blood pressure levels.
Main Results:
- Calcium-entry blockers demonstrated significant dilation in both small and large arteries, notably in brachial and carotid circulations.
- A notable increase in systemic and brachial arterial compliance was observed.
- The observed increase in arterial compliance showed a weak correlation with blood pressure reduction.
Conclusions:
- Calcium-entry blockers enhance arterial compliance independently of their blood pressure-lowering effects.
- These drugs can effectively reverse arterial stiffening in patients with essential hypertension.
- Improved arterial compliance has positive implications for cardiac and vascular health in hypertensive individuals.
Abstract:
Calcium-entry blockers dilate small arteries as well as large arteries, particularly in the brachial and the carotid circulations. This dilating effect is associated with an increase in systemic and brachial arterial compliance, which is poorly related to the level in blood pressure. Calcium-entry blockers are able to reverse the reduced arterial compliance observed in patients with essential hypertension, with important consequences to the structure and function of the heart and large vessels.