Ketotifen inhibits exacerbation of allergic airway hyperreactivity by racemic salbutamol in the guinea pig

In passively sensitized anesthetized guinea pigs, intravenous infusion of low doses of antigen ovalbumin induced a marked increased responsivity of the airways to intravenous injection of leukotriene C 4. Sustained infusion of racemic salbutamol intensified responses to leukotriene C 4 both before a...

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Veröffentlicht in:Journal of allergy and clinical immunology 1993-04, Vol.91 (4), p.909-916
Hauptverfasser: Hoshiko, Ken-ichiro, Kristersson, Anne, Morley, John
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container_title Journal of allergy and clinical immunology
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creator Hoshiko, Ken-ichiro
Kristersson, Anne
Morley, John
description In passively sensitized anesthetized guinea pigs, intravenous infusion of low doses of antigen ovalbumin induced a marked increased responsivity of the airways to intravenous injection of leukotriene C 4. Sustained infusion of racemic salbutamol intensified responses to leukotriene C 4 both before and after infusion of ovalbumin. Hyperreactivity as a result of infusion of ovalbumin was inhibited by intraduodenal injection of either hydrocortisone or ketotifen at doses that did not diminish responses to leukotriene C 4 in animals not exposed to antigen. Ketotifen, but not hydrocortisone, inhibited the enhanced hyperreactivity associated with infusion of racemic salbutamol.
doi_str_mv 10.1016/0091-6749(93)90349-K
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Sustained infusion of racemic salbutamol intensified responses to leukotriene C 4 both before and after infusion of ovalbumin. Hyperreactivity as a result of infusion of ovalbumin was inhibited by intraduodenal injection of either hydrocortisone or ketotifen at doses that did not diminish responses to leukotriene C 4 in animals not exposed to antigen. 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source Elsevier ScienceDirect Journals Complete - AutoHoldings; MEDLINE; EZB-FREE-00999 freely available EZB journals
subjects Albuterol - pharmacology
Animals
Biological and medical sciences
Bronchial Hyperreactivity - prevention & control
bronchospasm
Dose-Response Relationship, Drug
Guinea Pigs
hydrocortisone
Hydrocortisone - pharmacology
hyperreactivity
Ketotifen
Ketotifen - pharmacology
leukotriene C 4
Male
Medical sciences
Ovalbumin - immunology
Pharmacology. Drug treatments
Respiratory system
salbutamol
SRS-A - pharmacology
Stereoisomerism
title Ketotifen inhibits exacerbation of allergic airway hyperreactivity by racemic salbutamol in the guinea pig
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