Document Detail

Exhaled breath condensate levels of eotaxin and macrophage-derived chemokine in stable adult asthma patients.
MedLine Citation:
PMID:  16393265     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: Asthma is associated with esoinophilic airway inflammation and overproduction of T-helper type 2 (Th2) lymphocyte-related cytokines. OBJECTIVE: This study assessed the eosinophil chemoattractant eotaxin and Th2-specific macrophage-derived chemokine (MDC) in the adult asthmatic airway. Eotaxin and MDC levels were determined in exhaled breath condensate (EBC) obtained from adult patients with asthma. METHODS: Fifty-four asthmatics (20 male, mean (SD) age 40 (12) years and percentage predicted forced expiratory volume in 1 s (FEV(1)) 81.7 (20.8)) and 20 age- and sex-matched controls were studied. EBC was collected using EcoScreen by 10 min of tidal breathing with a nose clip. Concentrations of eotaxin and MDC were measured by ELISA. RESULTS: Asthma patients on inhaled corticosteroid (ICS) had a higher median interquartile range (IQR) level of eotaxin than the steroid-naïve asthmatics (18.5 (17.7-20.1) vs. 17.9 (17.0-18.6) pg/mL, P=0.02) and controls (18.5 (17.7-20.1) pg/mL vs 17.4 (16.3-18.0) pg/mL, P=0.001). Eotaxin level in EBC had a significant negative correlation with the FEV(1)/forced vital capacity ratio (r=-0.43, P=0.03) in steroid-naïve asthmatics. EBC MDC level was higher in subjects on ICS than the steroid naïve asthmatics (120 (118-125) vs. 117 (116-119) pg/mL, P=0.01) and the controls (120 (118-125) vs. 117 (116-120) pg/mL, P=0.02). CONCLUSIONS: Eotaxin and MDC could be measured in EBC of adults with asthma. EBC eotaxin and MDC levels were higher in asthmatics on ICS than the steroid-naïve asthmatics or controls. Exhaled chemokines may be potential non-invasive markers for assessing airway inflammation in asthmatics.
F W S Ko; C Y K Lau; T F Leung; G W K Wong; C W K Lam; C K W Lai; D S C Hui
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Clinical and experimental allergy : journal of the British Society for Allergy and Clinical Immunology     Volume:  36     ISSN:  0954-7894     ISO Abbreviation:  Clin. Exp. Allergy     Publication Date:  2006 Jan 
Date Detail:
Created Date:  2006-01-05     Completed Date:  2006-05-03     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  8906443     Medline TA:  Clin Exp Allergy     Country:  England    
Other Details:
Languages:  eng     Pagination:  44-51     Citation Subset:  IM    
Departments of Medicine and Therapeutics, Paediatrics and Chemical Pathology, The Chinese University of Hong Kong, Hong Kong, China.
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MeSH Terms
Administration, Inhalation
Adrenal Cortex Hormones / therapeutic use
Asthma / drug therapy,  immunology*
Biological Markers / analysis
Breath Tests
Case-Control Studies
Chemokine CCL11
Chemokine CCL22
Chemokines, CC / analysis*
Cross-Sectional Studies
Eosinophils / immunology
Immunoenzyme Techniques
Lung / immunology*
Skin Tests
Statistics, Nonparametric
Reg. No./Substance:
0/Adrenal Cortex Hormones; 0/Biological Markers; 0/CCL11 protein, human; 0/CCL22 protein, human; 0/Chemokine CCL11; 0/Chemokine CCL22; 0/Chemokines, CC

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