Nasal inflammation and bronchial reactivity to methacholine in atopic children with respiratory symptoms

被引:14
|
作者
Sale, R
Silvestri, M
Battistini, E
Defilippi, AC
Sabatini, F
Pecora, S
Rossi, GA
机构
[1] G Gaslini Inst Children, Div Pulm, I-16147 Genoa, Italy
[2] Alk Abello SpA, Milan, Italy
关键词
adhesion molecules; atopy; bronchial hyperreactivity; eosinophils; nasal brushing;
D O I
10.1034/j.1398-9995.2003.00286.x
中图分类号
R392 [医学免疫学];
学科分类号
100102 ;
摘要
Background: In atopic subjects, dysfunctions of the upper and lower airways frequently coexist and allergic rhinitis seems to constitute a risk factor for the occurrence of asthma in predisposed individuals. Aim of the study: To evaluate whether in atopic subjects nasal inflammation could reflect changes in respiratory functions, 11 allergic children, sensitized to house dust mites (HDM), with rhinoconjunctivitis and asthma and 10 nonatopic controls (ctrs) were studied. Methods: All subjects underwent nasal brushing to detect percentages of nasal eosinophils (Eos %) and intercellular adhesion molecule-1 (ICAM-1) expression by nasal epithelial cells. In the same day pulmonary function tests, i.e. forced vital capacity (FVC), forced expiratory volume in 1 s (FEV1), forced expiratory flows at 25-75% of the vital capacity (FEF25-75%) and methacholine (MCh) bronchial inhalation challenge were also evaluated. Results: Pulmonary function parameters were not significantly different in allergic children and in ctrs (P>0.05), while a significant increase in bronchial reactivity to MCh, expressed as Pd-20 MCh, was detected in the former population (P<0.05). As compared with ctrs, allergic children showed elevated Eos and ICAM-1 expression (P<0.05). When nasal inflammation and pulmonary function parameters were compared, a significant correlation was found between nasal Eos % and bronchial reactivity to MCh (P=0.002). Conclusions: These data support the concept of significant links between upper and lower respiratory tract involvement in atopic children sensitized to HDM.
引用
收藏
页码:1171 / 1175
页数:5
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