Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

Biomarkers in exhaled breath condensate indicate presence and severity of cystic fibrosis in children

Biomarkers in exhaled breath condensate indicate presence and severity of cystic fibrosis in... Chronic airway inflammation is present in cystic fibrosis (CF). Non‐invasive inflammometry may be useful in disease management. The aim of the present cross‐sectional study was to investigate: (i) the ability of fractional exhaled nitric oxide and inflammatory markers (IM) (exhaled breath condensate (EBC) acidity, nitrite, nitrate, hydrogen peroxide (H2O2), 8‐isoprostane, Th1/Th2 cytokines) to indicate (exacerbations of) CF; and (ii) the ability of these non‐invasive IM to indicate CF disease severity. In 98 children (48 CF/50 controls), exhaled nitric oxide was measured using the NIOX, and condensate was collected using a glass condenser. In CF interferon (IFN‐γ) and nitrite concentrations were significantly higher, whereas exhaled nitric oxide levels were significantly lower compared with controls (3.3 ± 0.3 pg/ml, 2.2 ± 0.2 μm, 10.0 ± 1.2 p.p.b. vs. 2.6 ± 0.2 pg/ml, 1.4 ± 0.1 μm, 15.4 ± 1.4 p.p.b. respectively). Using multivariate logistic regression models, the presence of CF was best indicated by 8‐isoprostane, nitrite and IFN‐γ (sensitivity 78%, specificity 83%; area under receiver operating characteristic curve (AUC) 0.906, p < 0.001). An exacerbation of CF was best indicated by 8‐isoprostane and nitrite (sensitivity 40%, specificity 97%, AUC curve 0.838, p = 0.009). Most indicative biomarkers of CF severity were exhaled nitric oxide, and condensate acidity (sensitivity 96%, specificity 67%; AUC curve 0.751, p = 0.008). In this cross‐sectional study, the combination of different exhaled IM could indicate (exacerbations of) CF, and severity of the disease in children. Longitudinal data are necessary to further confirm the role of these markers for the management of CF in children. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Pediatric Allergy and Immunology Wiley

Loading next page...
 
/lp/wiley/biomarkers-in-exhaled-breath-condensate-indicate-presence-and-severity-92imtQlMi0

References (44)

Publisher
Wiley
Copyright
© 2008 The Authors. Journal compilation © 2008 Blackwell Munksgaard
ISSN
0905-6157
eISSN
1399-3038
DOI
10.1111/j.1399-3038.2007.00693.x
pmid
18312532
Publisher site
See Article on Publisher Site

Abstract

Chronic airway inflammation is present in cystic fibrosis (CF). Non‐invasive inflammometry may be useful in disease management. The aim of the present cross‐sectional study was to investigate: (i) the ability of fractional exhaled nitric oxide and inflammatory markers (IM) (exhaled breath condensate (EBC) acidity, nitrite, nitrate, hydrogen peroxide (H2O2), 8‐isoprostane, Th1/Th2 cytokines) to indicate (exacerbations of) CF; and (ii) the ability of these non‐invasive IM to indicate CF disease severity. In 98 children (48 CF/50 controls), exhaled nitric oxide was measured using the NIOX, and condensate was collected using a glass condenser. In CF interferon (IFN‐γ) and nitrite concentrations were significantly higher, whereas exhaled nitric oxide levels were significantly lower compared with controls (3.3 ± 0.3 pg/ml, 2.2 ± 0.2 μm, 10.0 ± 1.2 p.p.b. vs. 2.6 ± 0.2 pg/ml, 1.4 ± 0.1 μm, 15.4 ± 1.4 p.p.b. respectively). Using multivariate logistic regression models, the presence of CF was best indicated by 8‐isoprostane, nitrite and IFN‐γ (sensitivity 78%, specificity 83%; area under receiver operating characteristic curve (AUC) 0.906, p < 0.001). An exacerbation of CF was best indicated by 8‐isoprostane and nitrite (sensitivity 40%, specificity 97%, AUC curve 0.838, p = 0.009). Most indicative biomarkers of CF severity were exhaled nitric oxide, and condensate acidity (sensitivity 96%, specificity 67%; AUC curve 0.751, p = 0.008). In this cross‐sectional study, the combination of different exhaled IM could indicate (exacerbations of) CF, and severity of the disease in children. Longitudinal data are necessary to further confirm the role of these markers for the management of CF in children.

Journal

Pediatric Allergy and ImmunologyWiley

Published: Nov 1, 2008

There are no references for this article.