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Am J Respir Crit Care Med:严重哮喘患者的辣椒素敏感性增加与临床结果恶化相关

2020-02-19 不详 网络

辣椒素咳嗽反射敏感性(C-CS)与哮喘控制不佳有关,而与严重哮喘的关联尚不清楚。本研究旨在确定C-CS对严重哮喘的临床影响。研究前瞻性纳入了2016年11月至2019年10月之间的157例哮喘患者(包括根据GINA 2015指南在步骤4/5中的122例严重哮喘患者)。进行了辣椒素咳嗽试验,肺活量测定和生物标志物评估。辣椒素诱导至少五次咳嗽所需的浓度(定义为C5)被用作C-CS的指标。还评估了哮喘控

辣椒素咳嗽反射敏感性(C-CS)与哮喘控制不佳有关,而与严重哮喘的关联尚不清楚。本研究旨在确定C-CS对严重哮喘的临床影响。

研究前瞻性纳入了2016年11月至2019年10月之间的157例哮喘患者(包括根据GINA 2015指南在步骤4/5中的122例严重哮喘患者)。进行了辣椒素咳嗽试验,肺活量测定和生物标志物评估。辣椒素诱导至少五次咳嗽所需的浓度(定义为C5)被用作C-CS的指标。还评估了哮喘控制测试(ACT)和合并症。 ERS / ATS指南将生物标志物与严重哮喘的4种临床特征相关联[控制不良(ACT <20,n = 58),频繁发作(≥2/年,n = 28),入院(≥1/年, n = 17),并评估了气流限制(%FEV1 <80,n = 30)。

结果显示,C-CS升高与哮喘控制不良,频繁发作和入院有关,特别是在非特应性患者中(n = 54)。同时,C-CS与气流限制无关。多元回归分析表明,升高的C-CS(C5≤2.44µM)是哮喘控制不佳和频繁发作的重大风险。在一般因素和合并症方面,吸烟,糖尿病和慢性鼻-鼻窦炎与严重哮喘的临床特征相关(所有p <0.05)。

综上所述,该研究结果表明,C-CS升高是严重哮喘的危险因素。本研究提示气道神经元功能障碍与非2型严重哮喘的病理生理学相关。

原始出处:

Kanemitsu Y, Fukumitsu K, et al., Increased Capsaicin Sensitivity in Severe Asthmatics Associated with Worse Clinical Outcome. Am J Respir Crit Care Med. 2020 Jan 28. doi: 10.1164/rccm.201911-2263OC.

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