Elevated Eosinophil Counts in Acute Exacerbations of Bronchiectasis: Unveiling a Distinct Clinical Phenotype.

IF 4.6 2区 医学 Q1 RESPIRATORY SYSTEM
Lung Pub Date : 2024-02-01 Epub Date: 2024-01-16 DOI:10.1007/s00408-023-00668-w
Weixin Chen, Siyi Ran, Chenchang Li, Zhixin Li, Nili Wei, Jing Li, Naijian Li
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引用次数: 0

Abstract

Background: Non-cystic fibrosis bronchiectasis is a chronic respiratory disease characterized by bronchial dilation. However, the significance of elevated eosinophil counts in acute exacerbations of bronchiectasis remains unclear.

Methods: This retrospective case-control study included 169 hospitalized patients with acute exacerbations of non-cystic fibrosis bronchiectasis. Based on blood eosinophil levels, patients were categorized into eosinophilic and non-eosinophilic bronchiectasis groups. Various clinical variables, including lung function, comorbidities and clinical features were collected for analysis. The study aimed to examine the differences between these groups and their clinical phenotypes.

Results: Eosinophilic bronchiectasis (EB) was present in approximately 22% of all hospitalized patients with bronchiectasis, and it was more prevalent among male smokers (P < 0.01). EB exhibited greater severity of bronchiectasis, including worse airway obstruction, higher scores in the E-FACED (FACED combined with exacerbations) and bronchiectasis severity index (BSI), a high glucocorticoids medication possession ratio, and increased hospitalization cost (P < 0.05 or P < 0.01). Furthermore, we observed a significant positive correlation between blood eosinophil count and both sputum eosinophils (r = 0.49, P < 0.01) and serum total immunoglobulin E levels (r = 0.21, P < 0.05). Additional analysis revealed that patients with EB had a higher frequency of shortness of breath (P < 0.05), were more likely to have comorbid sinusitis (P < 0.01), and exhibited a greater number of lung segments affected by bronchiectasis (P < 0.01).

Conclusions: These findings suggest that EB presents a distinct pattern of bronchiectasis features, confirming the notion that it is a specific phenotype.

Abstract Image

支气管扩张症急性加重期嗜酸性粒细胞计数升高:揭示一种独特的临床表型
背景:非囊性纤维化支气管扩张症是一种以支气管扩张为特征的慢性呼吸道疾病。然而,支气管扩张症急性加重期嗜酸性粒细胞计数升高的意义仍不明确:这项回顾性病例对照研究纳入了 169 名急性加重的非囊性纤维化支气管扩张症住院患者。根据血液中的嗜酸性粒细胞水平,将患者分为嗜酸性粒细胞支气管扩张症组和非嗜酸性粒细胞支气管扩张症组。研究还收集了各种临床变量,包括肺功能、合并症和临床特征,以便进行分析。研究旨在探讨这些组别之间的差异及其临床表型:嗜酸性粒细胞性支气管扩张症(EB)约占所有住院支气管扩张症患者的 22%,在男性吸烟者中发病率更高(P,结论:EB 在所有住院支气管扩张症患者中发病率最高,约占 22%:这些研究结果表明,嗜酸性粒细胞支气管扩张症具有独特的支气管扩张特征,证实了它是一种特殊的表型。
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来源期刊
Lung
Lung 医学-呼吸系统
CiteScore
9.10
自引率
10.00%
发文量
95
审稿时长
6-12 weeks
期刊介绍: Lung publishes original articles, reviews and editorials on all aspects of the healthy and diseased lungs, of the airways, and of breathing. Epidemiological, clinical, pathophysiological, biochemical, and pharmacological studies fall within the scope of the journal. Case reports, short communications and technical notes can be accepted if they are of particular interest.
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