Why the study?
Does the vasodilator potency of calcium-entry blockers compared to glyceryl trinitrate depend on the constrictor signal in isolated dog coronary arteries?
Population
Isolated ring segments of dog coronary arteries contracted by serotonin, phenylephrine, noradrenaline, K+…
Comparison
Calcium-entry blockers vs Glyceryl trinitrate (GTN)
Design
Preclinical
Authors
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Suggests GTN may offer more reliable coronary relaxation across stimuli; leaves open clinical translation of constrictor-dependent calcium blocker potency.
Does the vasodilator potency of calcium-entry blockers compared to glyceryl trinitrate depend on the constrictor signal in isolated dog coronary arteries?
The effectiveness of calcium-entry blockers in relaxing coronary arteries is dependent on the specific constrictor signal, unlike glyceryl trinitrate which is uniformly effective.
Angus et al. (1983) studied this question.
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