Key result
U-46619 potentiated the constrictor effects of noradrenaline and electrical stimulation in human saphenous veins through stimulation of TXA2 receptors, independent of dihydropyridine calcium channels.
Why the study?
Does U-46619 potentiate adrenergic constriction in human saphenous veins?
Does U-46619 potentiate adrenergic constriction in human saphenous veins?
U-46619 facilitates sympathetic neurotransmission and potentiates the constrictor effects of noradrenaline in human saphenous veins via TXA2 receptors, independent of dihydropyridine-sensitive calcium channels.
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No immediate clinical application in vein grafts; leaves open relevance of TXA2 signaling to vasospasm or patency.
José M. Vila (2001) studied Patients undergoing coronary artery bypass surgery (n=35). U-46619 was evaluated on Contractile responses and potentiation of adrenergic responses. U-46619 potentiated the constrictor effects of noradrenaline and electrical stimulation in human saphenous veins through stimulation of TXA2 receptors, independent of dihydropyridine calcium channels.
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