Inhibitory Effect of KWD 2131, Terbutaline, and DSCG on the Immediate and Late Allergen-Induced Bronchoconstriction |
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Authors: | B. Hegardt R. Pauwels M. Van Der Straeten |
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Affiliation: | Medical Dept. of AB Draco, Lund, Sweden, and Academic Hospital Dept. of Chest Diseases, State University, Gent, Belgium |
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Abstract: | Beta-adrenoceptor stimulants exhibit both bronchodilating and anti-allergic activities. KWD 2131 is a new beta-agonist with preferably anti allergic property. In an earlier study, nebulized KWD 2131 in a non-bronchodilating dose (0.25--0.50 mg) did not give significant protection against immediate reaction. The present study evaluated whether an increased nebulized dose of the new compound (5 mg) could protect against either immediate and/or late responses. The response was compared with a nebulized dose of terbutaline (5 mg) and with twice the recommended dose DSCG (40 mg). The study included 10 patients with known allergic asthma. It was designed as a single-blind cross-over trial with randomized allocation of the drugs. Lung functions were measured spirometrically and by body-plethysmograph; flow volume curves were drawn. KWD 2131 gave no significant protection against immediate reaction. Both terbutaline and DSCG did so, terbutaline being more efficient. Contrary to the beta-agonists, DSCG also gave protection against late response. |
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Keywords: | allergen challenge anti-allergic agent β-agonist DSCG KWD 2131 terbutaline |
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