2011 支气管哮喘患者诱导痰嗜酸性粒细胞计数与肺功能和呼出气一氧化氮浓度的关系

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支气管哮喘患者诱导痰嗜酸性粒细胞计数与肺功能和呼出气一氧化氮浓度的关系

王雯黄克武武宝梅王艳军王辰

[摘要] 目的 分析诱导痰嗜酸性粒细胞(EOS)计数与第一秒用力呼气容积(FEV1)和呼出气一氧化氮浓度的关系,并探讨EOS和呼出气一氧化氮水平对治疗方案调整的指导意义。方法 收集轻-中度非急性发作期哮喘患者65例(轻度32例,中度33例),经吸入糖皮质激素和长效β2肾上腺素受体激动剂联合治疗1年,随访测定第一秒用力呼气容积占预计值百分比(FEV1%)、最高呼气流速占预计值百分比(PEF%)、诱导痰EOS计数和呼出气一氧化氮浓度,记录哮喘控制测试得分。同时测定21名健康志愿者(对照组)诱导痰EOS计数、FEV1%、PEF%及呼出气一氧化氮浓度。结果 共有63例患者完成治疗和随访全程。治疗1~3个月时患者肺功能恢复较快,治疗半年后肺功能仍有缓慢改善。在治疗第3个月时,呼出气一氧化氮水平下降[治疗前( 61±25) nmol/L,治疗3个月后(32±19)nmol/L],差异有统计学意义(q=7.32,P<0.05);治疗6个月时呼出气一氧化氮水平降至(22±12)nmoL/L,与治疗前及健康对照组比较差异有统计学意义(q=6. 63,均P<0. 05);哮喘组EOS计数为(0. 093±0.023)×109/L,治疗3个月后为(0.032±0.0ll)×109/L,与治疗前及健康对照比较差异有统计学意义(均P <0.05);半年内痰中EOS计数与呼出气一氧化氮水平呈正相关(均P<0.05)。l、3、6、9、12个月随访时FEV1与呼出气一氧化氮水平呈负相关(r1=-0.537,r3=-0.658,r6= -0.623,r9=-0.537,r12=-0.597,均P<0.05)。哮喘控制测试得分治疗前与治疗后l、3、6、9、12个月比较差异有统计学意义(F =5.72,P<0.05)。结论 诱导痰EOS与呼出气一氧化氮水平可以较为敏感反映哮喘患者气道炎症,可作为评价疗效及调整治疗方案的指标。

哮喘;痰嗜酸性粒细胞; 呼出气一氧化氮

A study on the relevance of eosinophil counts in induced sputum and fractional concentration of exhaled NO and lung functions in asthmatics WANG WenHUANG Ke-wuWU Bao-meiWANG Yan-junWANG ChenDepartment of Respiratory and Critical Care Medicine, Beijing Chaoyang Hospital, Capital Medical University, Beijing Institute of Respiratory Medicine, Beijing 100020, China

[ Abstract] Objective To investigate the correlations between eosinophil counts in induced sputum and lung function (FENO) and evaluate these parameters in medication adjustment in patients with asthma.Methods Sixty-five outpatients with mild to moderate persistent asthma ( mild, 32 ; moderate, 33 ) from January to August 2008 were enrolled in the study. All were treated with combined medications comprising inhaled corticosteroids plus long-acting β2 agonists for 1 year. Lung function (FEV1% and PEF% ),eosinophil counts in induced sputum, FENO, and Asthma Control Test (ACT) scores were obtained at regular follow-up intervals. Twenty-one healthy volunteers served as controls, and lung function, eosinophil counts in induced sputum, and FENO were also obtained. Results Sixty-three subjects completed 1-year or longer follow-up. Lung function of 63 subjects recovered quickly in the early days and improved slowly during the following 6 months. FENO decreased from (61 ± 25 ) nmol/L at baseline to ( 32 ± 19 ) nmol/L by the third month (q =7. 32, P<0. 05) and to (22 ± 12) nmol/L by the sixth month, which showed significant difference from normal controls [ ( 13 ± 8) nmol/L; q = 6. 63, P < 0. 05 ]. Eosinophil counts in induced sputum of the asthma group at baseline were (0. 093 ±0. 023) × 109/L and decreased to (0. 032 ±0. 011)

10.3760/cma.j.issn. 1671-7368. 2011.11. 012

基金项目:北京市科学技术委员会研发攻关基金资助项目( Z07050700690706);中华医学会临床医学科研专项资金项目(08020410119);首都医科大学基础临床合作基金(10JL11)

100020 首都医科大学附属北京朝阳医院呼吸与危重症医学科北京呼吸疾病研究所

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