Lancet Respir Med:嗜酸性粒细胞计数可预测布地奈德的治疗反应

2018-01-11 zhangfan MedSci原创

对于使用福莫特罗治疗慢性阻塞性肺病的患者,血嗜酸性粒细胞计数是预测疾病恶化风险和临床激素治疗效果的重要指标

外周血嗜酸性粒细胞计数有助于量化慢性阻塞性肺疾病(COPD)患者服用吸入糖皮质激素(ICS)后病情变化。近日研究人员将嗜酸性粒细胞计数作为连续变量,以确定慢性阻塞性肺疾病(COPD)患者的恶化风险和临床ICS的反应特征。

研究人员对3项布地奈德-福莫特罗随机对照试验中血嗜酸性粒细胞计数资料进行分析,排除哮喘病史患者。对连续变量进行负二项式回归分析,以用药时间调整的年度恶化率为主要结果。

4528名患者参与研究。对于单用福莫特罗患者,嗜酸细胞计数增加与病情加重曲线呈非线性关系。对于嗜酸性粒细胞计数大于0.10×109/L的患者,布地奈德-福莫特罗对病情缓解的效果显著优于福莫特罗单药。(rr 0.75, 95% CI 0.57-0.99)。呼吸问卷及支气管扩张FEV1研究显示,嗜酸性粒细胞计数与布地奈德-福莫特罗联用存在相关性。仅嗜酸性粒细胞计数和吸烟史是布地奈德-福莫特罗疗效的独立预测因子 (嗜酸性粒细胞,p=0.013;吸烟史,p=0.015)。

对于使用福莫特罗治疗慢性阻塞性肺病的患者,血嗜酸性粒细胞计数是预测疾病恶化风险和临床激素治疗效果的重要指标。

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