使用分数呼出的氧化作为支气管扩展剂反应的潜在预测因子
Bruna Cuoco Provenzano1, Thiago Prudente Bartholo1, Kennedy Martins Kirk1
1Rio de Janeiro State University, Rio de Janeiro, Brazil.
Medicine
|July 14, 2023
概括
分数呼出的氧化 (FENO) 可以帮助识别带有支气管扩张 (BD+) 的喘患者. 较高的FENO和乙氨基酸细胞计数与喘严重程度增加和BD+反应相关.
科学领域:
- 肺部医学 肺部医学
- 过敏和免疫学 过敏和免疫学
- 生物标志物 生物标志物
背景情况:
- 氧化 (NO) 是酸性新陈代谢的产物,与呼吸道过敏反应和喘重塑有关.
- 分量呼出的氧化 (FENO) 是一种非侵入性标记物,用于酸性气道炎症在喘患者.
- 喘管理指南将患者分为严重程度阶段,影响治疗决策.
研究的目的:
- 调查喘患者的部分呼出氧化 (FENO) 水平和支气管扩张 (BD) 反应之间的相关性.
- 评估FENO,乙氨基酸细胞数量和喘严重程度之间的关系.
- 为了确定FENO是否可以预测喘中的支气管扩张阳性 (BD+).
主要方法:
- 进行了一项涉及喘患者的队列研究 (全球战略步骤3-5).
- 患者在同一天接受了血液采集以检测乙氨基酸计数,FENO测量和螺旋计.
- 根据螺旋计支气管扩张反应定义了两个组:BD+ (>10%的FVC或FEV1变化) 和BD-.
主要成果:
- 无论是BD+还是BD-群体,都显示出乙氨基酸细胞数量增加和FENO值增加,喘严重程度更高 (3至5阶段).
- 在FENO值和支气管扩张阳性 (BD+) (r=0.696,P=.007) 之间发现了显著的正相关性.
- 和乙氨基酸计数显示出较弱的相关性 (r=0.127).
结论:
- 测量FENO是一种有价值的工具,用于识别具有阳性支气管扩张反应 (BD+) 的喘患者.
- 随着喘的严重程度而增加FENO水平,并与乙酸性炎症有关.
- 这一发现支持FENO在喘表型和管理中的实用性.
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