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Title

Prevention of bronchoconstriction in sensitized guinea pigs: efficacy of common prophylactic drugs

Authors
Schütz, Nathalie
Sly, Peter D
Published in Respiratory Physiology & Neurobiology. 2004, vol. 141, no. 2, p. 167-78
Abstract Efficacy of beta2-agonists (B2), anticholinergics, corticosteroids, anti-inflammatory drugs or antihistamines against methacholine, histamine, or allergen-induced lung constriction was tested in ovalbumin sensitized guinea pigs. Airway resistance (Raw) and parenchymal damping (G) and elastance (H) were determined from low-frequency forced oscillatory input impedance (ZL). ZL was measured under control conditions, during iv infusions of methacholine, and following iv boluses of histamine or ovalbumin. In decreasing potency, ipratropium, salmeterol, fluticasone or cromoglycate reduced the methacholine-induced increases in Raw and G. Only antihistamines had any effects on the histamine-induced increased in Raw, G, and H. The ovalbumin-induced increases in Raw, G and H in the control animals (120 +/- 90%, 201 +/- 126%, 86 +/- 71%) were markedly reduced by pretreatments with antihistamines (18 +/- 11%, 13 +/- 9%, 3+/- 3%) and cromoglycate (29 +/- 13%, 35 +/- 22%, 18 +/- 10%). Bronchoconstriction induced by muscarinic receptor stimulation is inhibited by anticholinergic, anti-inflammatory or beta2-agonist pretreatment; antihistaminic or anti-inflammatory premedication is beneficial if the release of histamine via an exposure to allergen is responsible for the fall in lung function.
Keywords Adrenergic Agonists/pharmacologyAdrenergic beta-2 Receptor AgonistsAlbuterol/analogs & derivatives/pharmacologyAllergens/pharmacologyAnalysis of VarianceAndrostadienes/pharmacologyAnimalsAnti-Inflammatory AgentsBronchial Hyperreactivity/chemically induced/prevention & controlBronchoconstriction/drug effectsBronchoconstrictor Agents/pharmacologyBronchodilator Agents/pharmacologyCholinergic Antagonists/pharmacologyCromolyn Sodium/pharmacologyDose-Response Relationship, DrugDrug InteractionsGuinea PigsHistamine/pharmacologyHistamine H1 Antagonists/pharmacologyIpratropium/pharmacologyMaleMethacholine Chloride/pharmacologyOvalbumin
Identifiers
PMID: 15239967
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Structures
Research groups Enfants et hyperréactivité bronchique (69)
Facteurs influençants le développement pulmonaire: étude translationnelle chez l'animal et l'homme (182)
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SCHÜTZ, Nathalie et al. Prevention of bronchoconstriction in sensitized guinea pigs: efficacy of common prophylactic drugs. In: Respiratory Physiology & Neurobiology, 2004, vol. 141, n° 2, p. 167-78. https://archive-ouverte.unige.ch/unige:55479

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Deposited on : 2015-04-13

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