J Pharm Pharmacol. 1988 Nov;40(11):812-5.

Relaxant and beta 2-adrenoceptor blocking activities of labetalol, dilevalol, amosulalol and KF-4317 on the rat isolated aorta.

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Department of Pharmacology, School of Medicine, University of Auckland, Private Bag, New Zealand.

Abstract

The KCl-contracted rat aorta is relaxed by labetalol, dilevalol, amosulalol and KF-4317. These relaxations are not reversed by ICI 118,551 at 10(-6) M and, therefore, are not due to beta-adrenoceptor agonism. At 10(-7) M, labetalol, dilevalol, amosulalol and KF-4317 were beta 2-adrenoceptor antagonists as they inhibited the relaxant responses of rat aorta to procaterol.

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J Pharm Pharmacol. 1988 Nov ;40(11):812-5.

PubMed
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Relaxant and beta 2-adrenoceptor blocking activities of labetalol, dilevalol, amosulalol and KF-4317 on the rat isolated aorta.

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