Document Detail


Airway nitric oxide in asthmatic children and patients with cystic fibrosis.
MedLine Citation:
PMID:  8980966     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
We evaluated the effects of asthma and cystic fibrosis on nitric oxide (NO) concentrations in the respiratory tract. NO levels in orally exhaled air and nasal gas samples were studied in 90 asthmatic patients (4-14 yrs), 67 patients with cystic fibrosis (CF) (5-32 yrs), and 68 controls (4-34 yrs). NO concentrations measured by chemiluminescene were correlated with the patient's vital capacity, forced expiratory volume in one second (FEV1) and specific airway resistance. In all groups, NO concentrations in orally-exhaled air correlated with the inhaled ambient NO (r = 0.85-0.91). At an ambient NO concentration of 0 parts per billion (ppb), asthmatic patients exhaled air with higher NO concentrations than cystic fibrosis patients and controls (8.0 +/- 6.1 ppb (n = 33); 4.9 +/- 2.6 ppb (n = 23); and 3.0 +/- 2.5 ppb (n = 37); respectively; p < 0.001). Similar results were obtained for ventilation-adjusted orally-exhaled NO. Nasal NO concentrations were lower in patients with CF (23 +/- 17 ppb) than in controls and asthmatics (96 +/- 47 and 103 +/- 64 ppb; p < 0.001). There was no relationship between nasal or oral NO and pulmonary function tests. Our results suggest that ambient NO levels influence NO concentrations in orally-exhaled air. Like adults, asthmatic children exhale more NO than their controls. Reduced nasal NO concentrations in patients with cystic fibrosis may reflect chronic epithelial cell damage or an increased mucosal barrier impeding NO diffusion into the airway.
Authors:
J Dötsch; S Demirakça; H G Terbrack; G Hüls; W Rascher; P G Kühl
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  The European respiratory journal     Volume:  9     ISSN:  0903-1936     ISO Abbreviation:  Eur. Respir. J.     Publication Date:  1996 Dec 
Date Detail:
Created Date:  1997-03-18     Completed Date:  1997-03-18     Revised Date:  2013-05-23    
Medline Journal Info:
Nlm Unique ID:  8803460     Medline TA:  Eur Respir J     Country:  DENMARK    
Other Details:
Languages:  eng     Pagination:  2537-40     Citation Subset:  IM    
Affiliation:
Dept of Pediatrics and Neonatology, Lustug-Liebig University of Giessen, Germany.
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MeSH Terms
Descriptor/Qualifier:
Adolescent
Adult
Asthma / metabolism*
Breath Tests
Case-Control Studies
Child
Cystic Fibrosis / metabolism*
Female
Humans
Luminescent Measurements
Male
Nasopharynx / metabolism
Nitric Oxide / analysis,  metabolism*
Respiratory Function Tests
Trachea / metabolism
Chemical
Reg. No./Substance:
10102-43-9/Nitric Oxide

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