title: Anti-anaphylactic and bronchodilating action of a beta-adrenoceptor stimulator, KWD 2131, in human lung tissue.
abstract: The beta-adrenoceptor stimulating agent KWD 2131 has been studied with regard to inhibitory effect on allergen-induced histamine release from passively sensitized human lung tissue and relaxing effect on contracted small (diameter = 1 mm) and large (diameter greater than 3 mm) isolated human bronchi. The dose for 50% inhibition of the allergen-induced histamine release was 2 x 10(-11) M. The potency of KWD 2131 was approximately 0.15 times that of terbutaline and 0.05 times that of isoprenaline in this respect. The bronchodilating potency of KWD 2131 was 0.02-0.03 times that of terbutaline. The data indicate that KWD 2131 is a compound with preferably anti-anaphylactic potency in the human lung.
mesh_terms: D000318:Adrenergic beta-Agonists / Q000494:pharmacology; D000485:Allergens; D000707:Anaphylaxis; D001980:Bronchi / Q000187:drug effects; D001993:Bronchodilator Agents / Q000494:pharmacology; D004983:Ethanolamines / Q000494:pharmacology*; D006636:Histamine Release / Q000187:drug effects*; D006801:Humans; D066298:In Vitro Techniques; D007545:Isoproterenol / Q000494:pharmacology; D008168:Lung / Q000187:drug effects*; D011058:Pollen; D013726:Terbutaline / Q000494:pharmacology / Q000031:analogs & derivatives
chemical_list: D000318:Adrenergic beta-Agonists; D000485:Allergens; D001993:Bronchodilator Agents; D004983:Ethanolamines; C025075:KWD 2131; D007545:Isoproterenol; D013726:Terbutaline