Selectivity of bevantolol hydrochloride, a beta 1-adrenoceptor antagonist, in asthmatic patients.

Article Details

Citation

Lofdahl CG, Svedmyr K, Svedmyr N

Selectivity of bevantolol hydrochloride, a beta 1-adrenoceptor antagonist, in asthmatic patients.

Pharmacotherapy. 1984 Jul-Aug;4(4):205-10.

PubMed ID
6148733 [ View in PubMed
]
Abstract

Bevantolol hydrochloride, a new beta-adrenoceptor antagonist, has been shown to be cardioselective in animals. To evaluate its selectivity in humans, a double-blind, crossover study was conducted in 8 asthmatics. Following a single oral dose of placebo, bevantolol 75 or 150 mg or propranolol hydrochloride 40 mg, forced expiratory volume in 1 second (FEV1), heart rate, blood pressure and skeletal muscle tremor were measured before and after 4 increasing intravenous doses of terbutaline sulfate to establish terbutaline dose-response curves. The FEV1 decreased after all active treatments. During terbutaline infusions there was an increase in FEV1 after both bevantolol doses and placebo. The terbutaline dose-response curve after bevantolol shifted to the right, however. After propranolol, there was no increase in FEV1 during terbutaline stimulation. Heart rate and skeletal muscle tremor showed a similar pattern during the experiment. In dosages that have previously been shown to produce at least the same degree of blockade of exercise-induced tachycardia, bevantolol has less influence on terbutaline-induced bronchodilation, heart rate increase and skeletal muscle tremor than did propranolol. Thus bevantolol has relative beta 1-adrenoceptor antagonist selectivity. Drawing upon the results of a previous study in the same patients, we believe bevantolol, atenolol and metoprolol have similar beta 1-selectivity.

DrugBank Data that Cites this Article

Drug Targets
DrugTargetKindOrganismPharmacological ActionActions
BevantololBeta-1 adrenergic receptorProteinHumans
Yes
Antagonist
Details