摘要
目的 了解儿童哮喘急性发作时气道炎性特征及临床意义 方法 对34例急性发作期、24例稳定期哮喘患儿和15例正常儿童的诱导痰液进行炎性细胞计数和分类,并测定其中白细胞介素-6(IL-6)、IL-8水平,分析炎性细胞与上述细胞因子及最大呼气流速(PEF)的关系 结果 哮喘急性发作组总细胞数较正常对照组明显增高,急性发作组嗜酸性粒细胞(EOS)、中性粒细胞及单核细胞比例均高于正常对照组,淋巴细胞比例明显低于正常对照组,稳定组EOS比例明显高于正常对照组 EOS比例与PEF呈显著负相关,IL-8水平与中性粒细胞呈显著正相关,急性发作期IL-6水平与EOS呈显著正相关 结论 急性哮喘发作患儿气道炎症是由EOS、中性粒细胞及单核细胞参与的炎症,IL-6、IL-8可能是参与此过程的重要细胞因子 痰液EOS数与病情严重程度相关,可作为监测病情及疗效的指标之一
Objective To investigate the characteristic and clinical significance of airway inflammation in children with acute asth-ma. Methods Underwent sputum induction and sputum induction in children (n=34) with acute asthma was repented in recovered children ( n = 24).Induced sputum were also taken from 15 healthy children as controls.Total and differential cell counts were per-formed. Interleukin(IL)-8、IL-6 were measured,The relationship between inflammatory cells and IL-8、 IL-6、peak expiratory (PEF) were analyzed.Results The inflammatory cell infiltrate was mixed including eosmophilic granulocytes, neutrophils, and macrophages. They decreased significantly, but eosinophilic granulocyte remained a higher percentage compared with healthy subjects. There was low-er percentage of lymphocytes at acute exacerhation.Eosinophilic granulocytes were correlated with the degree of airflow obstruction. Levels of IL-8、IL-6 were elevated during the acute exacerbation and decreased at resolution.IL-8 was correlated significantly with neutrophils at acute exacerhation and resolution.IL-6 was correlated signifficantly with eosinophilic granulocytes at acute exacerbation. Conclusions Airway inflammation is chataeterized by infiltration of eosinophils, neutrophils and macrophages.IL-8、IL-6 possibly is the important cytokines of airway inflammation in children with acute asthma. Increased eosinophils in induced sputum correlates with asthma severity. Therapy to the cytokines may have potential values.J Appl Clin pediatr,2004,19(12): 1023-1025
出处
《实用儿科临床杂志》
CAS
CSCD
北大核心
2004年第12期1023-1025,共3页
Journal of Applied Clinical Pediatrics
基金
上海市卫生局科技发展基金项目(01474)
关键词
哮喘
诱导痰液
气道炎症
细胞因子
儿童
asthma
induced sputum
airway inflammation
cytokines
children
