摘要
哮喘和慢性阻塞性肺病(COPD)是一种复杂的、异质性的疾病,包括多种表型,其中有些是对目前可用的治疗方法难以治疗的。阐明这些表型和确定生物标记物以识别它们并指导适当的治疗仍然是一个优先事项。目的:综述血嗜酸性粒细胞作为嗜酸粒细胞气道炎症的替代生物标志物的作用,这是哮喘和慢性阻塞性肺疾病(COPD)表型的共同特征。描述了血嗜酸性粒细胞在气道疾病中的作用,以及它们在反映气道嗜酸性粒细胞方面的作用。每种疾病都会被单独讨论,因为血嗜酸性粒细胞可能被用作生物标志物的方式不同。针对重症患者(持续性嗜酸粒细胞哮喘和慢性阻塞性肺病加重期),我们评估了检查嗜酸性粒细胞作为生物标志物的证据。结果:在哮喘中,使用血嗜酸性粒细胞指导治疗的理论依据是明确的,有前瞻性的、严格控制的研究支持。较高的嗜酸性粒细胞计数表明患者的病情更严重,结果更差,建议采用针对过敏和/或嗜酸细胞途径的生物疗法。在慢性阻塞性肺病(COPD)中,证据不太可靠。高血嗜酸性粒细胞计数是预测未来恶化的一个适度的预测因子,并且可以预测LABA/LAMA对ICS的积极反应,特别是在有频繁恶化史的患者中。结论:在临床实践中广泛应用之前,需要在前瞻性临床研究中对这些结果进行进一步的评价,对临床相关嗜酸性粒细胞增多症的合适阈值进行标准化,并确定在不同的临床环境下是否需要单次或多次测量。
关键词: 血嗜酸性粒细胞,哮喘,慢性阻塞性肺疾病,生物标志物,气道炎症,治疗方案。
图形摘要
Current Drug Targets
Title:Blood Eosinophils as Biomarkers to Drive Treatment Choices in Asthma and COPD
Volume: 19 Issue: 16
关键词: 血嗜酸性粒细胞,哮喘,慢性阻塞性肺疾病,生物标志物,气道炎症,治疗方案。
摘要: Background: Asthma and COPD are complex, heterogeneous conditions comprising a wide range of phenotypes, some of which are refractory to currently available treatments. Elucidation of these phenotypes and identification of biomarkers with which to recognize them and guide appropriate treatment remain a priority.
Objective: This review describes the utility of blood eosinophils as a surrogate biomarker of eosinophilic airway inflammation, a common feature of specific asthma and COPD phenotypes. The role of blood eosinophils in airway disease is described, as is their relevance in reflecting airway eosinophilia. Each disease is discussed separately as the manner in which blood eosinophils might be used as biomarkers differs. Focusing on patients with severe disease (persistent eosinophilic asthma and exacerbating COPD), we evaluate evidence examining eosinophils as biomarkers.
Results: In asthma, the rationale for using blood eosinophils to guide treatment is clearly defined, backed by prospective, well-controlled studies. Higher eosinophil counts identify patients with more severe disease and poorer outcomes, patients for whom biologic therapies targeting allergic and/or eosinophilic pathways are recommended. In COPD, the evidence is less robust. High blood eosinophil counts are a modest predictor of future exacerbations, and may predict a favourable response to ICS on top of LABA/LAMA, especially in patients with a history of frequent exacerbations.
Conclusion: Before extensive application in clinical practice, further evaluation of these findings in prospective clinical studies, and standardization of the appropriate thresholds of clinically relevant eosinophilia are needed, together with establishing whether single or multiple measurements are required in different clinical settings.
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Cite this article as:
Blood Eosinophils as Biomarkers to Drive Treatment Choices in Asthma and COPD, Current Drug Targets 2018; 19 (16) . https://dx.doi.org/10.2174/1389450119666180212120012
DOI https://dx.doi.org/10.2174/1389450119666180212120012 |
Print ISSN 1389-4501 |
Publisher Name Bentham Science Publisher |
Online ISSN 1873-5592 |
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