Journal
CHEST
Volume 122, Issue 1, Pages 146-150Publisher
AMER COLL CHEST PHYSICIANS
DOI: 10.1378/chest.122.1.146
Keywords
asthma; bronchial hyperreactivity; leukotriene receptor antagonist
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Study objective: Cysteinyl leukotrienes are important proinflammatory mediators in the pathogenesis of asthma. Since bronchial hyperresponsiveness is a noninvasive surrogate marker of asthmatic airway inflammation, we evaluated the bronchoprotection afforded by leukotriene,receptor antagonists (LTRAs). Design: Systematic review of randomized, placebo-controlled trials in which LTRAs were administered for greater than or equal to5 days. Studies in which active drug was administered as a first-line or second-line therapy were used. Setting: MEDLINE, BIDS, and Cochrane Library data registers. Measurements: The doubling dose/dilution difference that caused a 20% fall in the FEV1 between LTRA and placebo. Results: Thirteen trials (353 subjects) fulfilled eligibility, criteria. Combining the results the overall weighted estimated protection amounted to a 0.85 doubling dose shift (95% confidence interval, 0.69 to 1.02). Conclusion: Since the estimated protection amounted to almost one doubling dose, this reinforces the role of LTRAs as anti-inflammatory therapy in asthma.
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