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  • Title: Montelukast, a potent leukotriene receptor antagonist, causes dose-related improvements in chronic asthma. Montelukast Asthma Study Group.
    Author: Noonan MJ, Chervinsky P, Brandon M, Zhang J, Kundu S, McBurney J, Reiss TF.
    Journal: Eur Respir J; 1998 Jun; 11(6):1232-9. PubMed ID: 9657560.
    Abstract:
    The leukotrienes are known to be important mediators of bronchial asthma. The ability of montelukast, a potent and selective CysLT1 leukotriene receptor antagonist, to cause a dose-related improvement in chronic asthma was investigated in a placebo-controlled, multicentre, parallel-group study. After a two week placebo run-in period, chronic asthmatic patients with a forced expiratory volume in one second (FEV1) 40-80% predicted with > or = 15% increase (absolute value) after beta2-agonist were randomly assigned to one of four treatment groups (placebo or montelukast 2, 10, or 50 mg once daily in the evening) for a three week, double-blind treatment period. For patient-reported end-points (daytime symptom score, use of as needed inhaled beta2 agonist, asthma-specific quality of life) and frequency of asthma exacerbations, montelukast 10 and 50 mg caused similar responses, superior to 2 mg and significantly (p<0.05; linear trend test) different from placebo. All three doses caused improvements in FEV1 and morning and evening peak expiratory flow rate (PEFR) that were significantly (p<0.05) different from placebo. Differences (least square mean) between the pooled 10 and 50 mg montelukast treatment groups and placebo were: 7.1% change from baseline in FEV1, 19.23 L x min(-1) in morning PEFR, -0.29 in daytime asthma symptom score (absolute value), and -0.82 in beta2-agonist use (puff x day(-1)). The incidence of adverse experiences was neither dose-related nor different between montelukast and placebo treatments. We conclude that montelukast causes a dose-related improvement in patient-reported asthma end-points over the range 2-50 mg. Montelukast causes benefit to chronic asthmatic patients by improving asthma control end-points.
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