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  • Title: Effects of beclomethason/formoterol and budesonide/formoterol fixed combinations on lung function and airway inflammation in patients with mild to moderate asthma--an exploratory study.
    Author: Kirsten AM, Watz H, Brindicci C, Piccinno A, Magnussen H.
    Journal: Pulm Pharmacol Ther; 2015 Apr; 31():79-84. PubMed ID: 25194884.
    Abstract:
    RATIONALE: Asthma is a chronic inflammatory airway disease of the whole bronchial tree. In this exploratory study we investigated the effects of beclomethasone/formoterol (becl/form) and budesonide/formoterol (bud/form) fixed combinations on lung function and airway inflammation in patients with mild to moderate asthma. METHODS: 22 adult patients with asthma (mean FEV1 91.6% pred.) were recruited to this prospective phase IV, double-blind, double-dummy, two-way cross-over, single-centre, randomised study. After a 7 days run-in period with bud 200 μg bid patients were randomised to receive 4 weeks of becl/form (100/6 μg) bid in a pressurised metered dose inhaler or bud/form (160/4.5 μg) bid administered via dry powder inhaler. We measured spirometry, bodyplethysmography, impulse oscillometry, nitric oxide (NO) and its alveolar fraction (CAlv), and assessed sputum cellularity. RESULTS: CAlv significantly decreased after 4 weeks of treatment in each treatment period. The adjusted geometric mean (log transformed data, end of treatment vs. baseline) was 0.942 ppb (95% CI: 0.778-1.141 ppb) for becl/form and 0.903 ppb (95% CI: 0.741-1.099 ppb) for bud/form. Impulse oscillometry revealed a significant decrease in mean Delta R5-R20 of -0.033 kPa * L(-1) * sec(-1) for becl/form (95% CI: -0.064 to -0.002) and of -0.048 033 kPa * L(-1) * sec(-1) for bud/form (95% CI: -0.079 to -0.017). Other parameters of lung function and NO showed numerically small and in most cases statistically non-significant changes. CONCLUSIONS: In patients with mild to moderate asthma pre-treated with inhaled corticosteroids, the use of ICS/LABA formulations led to improvements of CAlv and Delta R5-R20 indicating that these parameters might be helpful to further assess the effects of inhaled ICS/LABA combinations on lung function and airway inflammation.
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