Bronchodilatory effect of the PPAR-gamma agonist rosiglitazone in smokers with asthma.
Author(s): Spears M, Donnelly I, Jolly L, Brannigan M, Ito K, McSharry C, Lafferty J, Chaudhuri R, Braganza G, Bareille P, Sweeney L, Adcock IM, Barnes PJ, Wood S, Thomson NC
Affiliation(s): Department of Respiratory Medicine, Faculty of Medicine, University of Glasgow, Glasgow, UK.
Publication date & source: 2009-07, Clin Pharmacol Ther., 86(1):49-53. Epub 2009 Apr 8.
Publication type: Comparative Study; Randomized Controlled Trial; Research Support, Non-U.S. Gov't
Smokers with asthma show a reduced response to inhaled corticosteroids. We hypothesized that a peroxisome proliferator-activated receptor-gamma (PPAR-gamma) agonist would be superior for the clinical treatment of these asthma patients. Forty-six smokers with asthma were randomized to inhaled beclometasone dipropionate (200 microg per day) or rosiglitazone (8 mg per day) for 4 weeks. Rosiglitazone produced improvements in lung function (forced expiratory volume in 1 s (FEV(1)) = 183 ml, P = 0.051; forced expiratory flow between 25 and 75% of the forced vital capacity (FEF(25-75)) = 0.24 l/s, P = 0.030) as compared with inhaled beclometasone dipropionate. Further trials using PPAR-gamma agonists in steroid-resistant airway disease are indicated.
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