Open AccessInhibitory Effect of KW-4679, an Anti-allergic Drug, on Tachykinin-Mediated Airway Response Induced by Electric Vagal Stimulation in Guinea Pigs
Author(s) -
Toshihide Ikemura,
Yasuo Sasaki,
Hidee Ishii,
Kenji Ohmori
Publication year - 1996
Publication title -
japanese journal of pharmacology/japanese journal of pharmacology
Language(s) - English
Resource type - Journals
eISSN - 1347-3506
pISSN - 0021-5198
DOI - 10.1254/jjp.71.179
Subject(s) - substance p , tachykinin receptor , stimulation , antagonist , chemistry , propranolol , neurokinin a , airway , atropine , medicine , pharmacology , endocrinology , anesthesia , receptor , neuropeptide
We examined the effect of KW-4679 ((Z)-11-[(3-dimethylamino) propylidene]-6,11-dihydro-dibenz[b,e]oxepin-2-acetic acid monohydrochloride), an anti-allergic drug, on the tachykinin-mediated airway response in guinea pigs. Electrical stimulation of the vagus nerve in atropine-treated and propranolol-treated guinea pigs caused a 38.1% decrease in dynamic compliance (Cdyn), which was suppressed by the combination of the tachykinin NK1-receptor antagonist (+/-)-CP-96345 and NK2-receptor antagonist SR 48968. KW-4679 at a dose of 3 mg/kg significantly reduced the decrease in Cdyn (P < 0.05). On the other hand, KW-4679 did not inhibit substance P or neurokinin A-induced decrease in Cdyn. These results suggest that KW-4679 may inhibit the tachykininergic airway response by prejunctional inhibition of peripheral sensory nerves.