比较孟鲁司特和莫美他松联合吸入与单独莫美他松吸入治疗慢性哮喘的疗效和耐受性
2011/07/06
摘要
背景:既往研究推荐采用口服孟鲁司特治疗慢性哮喘。对于单独皮质激素吸入(ICS)治疗不能有效控制哮喘的患者,孟鲁司特可作为一种有效的辅助治疗。近期研究显示,对于慢性哮喘患者,孟鲁司特吸入具有明显的支气管舒张作用。本研究旨在评价联合吸入孟鲁司特和莫美他松治疗慢性哮喘的疗效。
方法:本试验为期8周,设计为多中心、随机、双盲、安慰剂-对照研究,比较每日一次联合吸入孟鲁司特 1 mg和莫美他松220 μg(分别采用干粉雾化器吸入)与对照组吸入安慰剂联合莫美他松220 μg的疗效。入选研究对象为年龄为15~85岁的慢性患者,第一秒用力呼气容积(FEV1)为50~80%的预测值,β受体激动剂可逆性≥12%。在为期3周的预试验/导入期内,患者需满足最小症状阈值,然后接受开放标记的莫美他松吸入治疗。患者接受双盲(孟鲁司特 vs 安慰剂)治疗2周,然后进入1周的洗脱期,然后分别进行交叉治疗2周。主要的终点为2周治疗期内FEV1的变化值。次要终点为日间和夜间症状评分。其他终点还包括短效β受体激动剂(SABA)使用、哮喘恶化、哮喘控制、呼气峰值流量(PEF)、血液嗜酸性细胞计数。
结果:总共134名患者进行随机分组。对于主要终点,与对照组相比,联合治疗能显著改善患者的FEV1(最小二乘平均值:0.22 L vs. 0.17 L; P=0.033,[双尾α = 0.05])。在改善日间哮喘症状评分(p = .005)、夜间哮喘评分(p = .015)、增加哮喘控制天数(p = .004)、减少哮喘恶化天数(p ≤ .001)、减少嗜酸性粒细胞计数(p = .013)上,联合治疗显著优于对照治疗。对于AM或PM PEF及SABA使用,两组间无显著差异。两种治疗患者均能很好耐受。
结论:与安慰剂联合莫美他松吸入相比,孟鲁司特联合莫美他松吸入能更为有效地改善FEV1、症状、哮喘控制和血液嗜酸性粒细胞计数。
(苏楠 审校)
J Asthma. 2011 May 5. [Epub ahead of print]
The Efficacy and Tolerability of Inhaled Montelukast Plus Inhaled Mometasone Compared with Mometasone Alone in Patients with Chronic Asthma.
Philip G, Villarán C, Shah SR, Vandormael K, Smugar SS, Reiss TF.
Source
Clinical Research, Merck & Co., Inc. , Whitehouse Station, NJ , USA .
Abstract
BACKGROUND:The efficacy of oral montelukast in chronic asthma is well established. Montelukast is also an effective adjunctive therapy to inhaled corticosteroids (ICS) in asthma uncontrolled on ICS alone. Inhaled montelukast was recently shown to provide significant bronchodilation compared with placebo in patients with chronic asthma. The purpose of this study was to evaluate the efficacy of inhaled montelukast added to inhaled mometasone.
METHODS:This was an 8-week, multicenter, randomized, double-blind, placebo-controlled study comparing once-daily inhaled montelukast 1 mg plus inhaled mometasone 220 μg (delivered by separate dry powder inhalers) with placebo plus inhaled mometasone 220 μg. Men and women aged 15-85 years with chronic asthma, forced expiratory volume in 1 second (FEV(1)) 50-80% of the predicted value, and β-agonist reversibility ≥12% were eligible. Patients were required to meet a minimum symptom threshold while receiving open-label inhaled mometasone during a 3-week prestudy/run-in period. Patients received blinded (montelukast vs. placebo) treatment for 2 weeks, entered a 1-week washout period, then crossed over to the other treatment for 2 weeks. The primary endpoint was the average change from baseline in FEV(1) over the 2-week treatment period. Secondary endpoints included daytime and nighttime symptom scores. Other endpoints included short-acting β-agonist (SABA) use, asthma exacerbations, asthma control, peak expiratory flow (PEF), and blood eosinophil count.
RESULTS:A total of 134 patients were randomized. For the primary endpoint, change from baseline in FEV(1), inhaled montelukast plus inhaled mometasone was significantly more effective than placebo plus inhaled mometasone (least squares mean 0.22 L vs. 0.17 L; p = .033 [two-sided at α = 0.05]). Inhaled montelukast plus inhaled mometasone was also significantly more effective than placebo plus inhaled mometasone in improving daytime asthma symptom scores (p = .005) and nighttime asthma symptom scores (p = .015), increasing the percentage of days with asthma control (p = .004), decreasing the percentage of days with asthma exacerbations (p ≤ .001), and decreasing the blood eosinophil count (p = .013). Differences were not significant on AM or PM PEF or SABA use, although the latter approached significance (p = .073). Both treatments were well tolerated.
CONCLUSION:Inhaled montelukast plus inhaled mometasone was significantly more effective than placebo plus inhaled mometasone in improving FEV(1), symptoms, asthma control, and blood eosinophil count.
J Asthma. 2011 May 5. [Epub ahead of print]
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