Elevated exhaled nitric oxide in newborns of atopic mothers precedes respiratory symptoms

Latzin, Philipp; Kuehni, Claudia E; Baldwin, David N; Roiha, Hanna L; Casaulta, Carmen; Frey, Urs (2006). Elevated exhaled nitric oxide in newborns of atopic mothers precedes respiratory symptoms. American journal of respiratory and critical care medicine, 174(12), pp. 1292-8. New York, N.Y.: American Lung Association 10.1164/rccm.200606-782OC

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RATIONALE: Exhaled nitric oxide (NO) is a well-known marker of established airway inflammation in asthma. Its role in the disease process before the onset of respiratory symptoms remains unclear. Objectives: To examine whether elevated NO in newborns with clinically naive airways is associated with subsequent respiratory symptoms in infancy. METHODS: We measured exhaled NO concentration and output after birth and prospectively assessed respiratory symptoms during infancy in a birth cohort of 164 unselected healthy neonates. We examined a possible association between NO and respiratory symptoms using Poisson regression analysis. RESULTS: In infants of atopic mothers, elevated NO levels after birth were associated with increased risk of subsequent respiratory symptoms (risk ratio [RR], 7.5; 95% confidence interval [CI], 1.7-32.4 for each nl/s increase in NO output; p = 0.007). Similarly, a positive association between NO and symptoms was seen in infants of smoking mothers (RR, 6.6; 95% CI, 2.3-19.3; p = 0.001), with the strongest association in infants whose mothers had both risk factors (RR, 21.8; 95% CI, 5.8-81.3; p < 0.001). CONCLUSIONS: The interaction of NO with maternal atopy and smoking on subsequent respiratory symptoms is present early in life. Clinically, noninvasive NO measurements in newborns may prove useful as a new means to identify high-risk infants. Future confirmation of a role for NO metabolism in the evolution of respiratory disease may provide an avenue for preventative strategies.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > Department of Gynaecology, Paediatrics and Endocrinology (DFKE) > Clinic of Paediatric Medicine
04 Faculty of Medicine > Pre-clinic Human Medicine > Institute of Social and Preventive Medicine

UniBE Contributor:

Latzin, Philipp; Kühni, Claudia; Casaulta Aebischer, Carmen and Frey, Urs Peter

ISSN:

1073-449X

ISBN:

16973980

Publisher:

American Lung Association

Language:

English

Submitter:

Factscience Import

Date Deposited:

04 Oct 2013 14:48

Last Modified:

06 Dec 2013 13:42

Publisher DOI:

10.1164/rccm.200606-782OC

PubMed ID:

16973980

Web of Science ID:

000242889400005

URI:

https://boris.unibe.ch/id/eprint/19984 (FactScience: 3063)

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