title: Inhibition of 9 alpha,11 beta-prostaglandin F2-induced bronchial hyperresponsiveness by thromboxane A2 receptor antagonists in guinea pigs.
abstract: We studied the effect of intravenous administration of 9 alpha,11 beta-prostaglandin F2 on bronchial responsiveness to histamine and airway wall thickening in guinea pigs. The infusion of 9 alpha,11 beta-prostaglandin F2 induced an increase of the relative thickness of the airway wall in peripheral bronchi demonstrable by histological examination. Analysis of airway function showed that the infusion of 9 alpha,11 beta-prostaglandin F2 induced airway hyperresponsiveness to histamine with airway wall thickening. The thromboxane A2 receptor antagonists, ONO-NT-126 (5(Z)-6-[(1R,2R,3R,4S)-3-(n-4-bromobenzenesulfonyl-aminomethyl) bicyclo[2.2.1]heptane-2-yl]hex-5-enoic acid) and ONO-8809 (n-decyl(Z)-6-[(1S,2S,3R,4R)-3-(4-bromobenzenesulfonylaminomethyl) bicyclo[2.2.1]hept-2-yl]-5-hexenoate), inhibited these effects of 9 alpha,11 beta-prostaglandin F2 in a dose-dependent manner.
authors.affiliation: First Department of Internal Medicine, Gunma University School of Medicine, Maebashi, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Kurosawa
authors.forename: S
authors.initials: S
authors.lastname: Yodonawa
authors.forename: H
authors.initials: H
authors.lastname: Tsukagoshi
mesh_terms: D000403:Airway Resistance / Q000187:drug effects; D000818:Animals; D001643:Bridged Bicyclo Compounds / Q000494:pharmacology*; D016535:Bronchial Hyperreactivity / Q000139:chemically induced / Q000188:drug therapy*; D015237:Dinoprost; D004305:Dose-Response Relationship, Drug; D004347:Drug Interactions; D005229:Fatty Acids, Monounsaturated / Q000494:pharmacology*; D006168:Guinea Pigs; D006632:Histamine / Q000494:pharmacology*; D007262:Infusions, Intravenous; D008297:Male; D009119:Muscle Contraction / Q000187:drug effects; D009130:Muscle, Smooth / Q000187:drug effects; D017482:Receptors, Thromboxane / Q000037:antagonists & inhibitors*
chemical_list: D001643:Bridged Bicyclo Compounds; D005229:Fatty Acids, Monounsaturated; D017482:Receptors, Thromboxane; C067427:ONO 8809; C067520:ONO-NT 126; D006632:Histamine; D015237:Dinoprost