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 (ISPM)
UniBE Contributor:	Latzin, Philipp, Kühni, Claudia, Casaulta, Carmen, Frey, Urs Peter
ISSN:	1073-449X
ISBN:	16973980
Publisher:	American Lung Association
Language:	English
Submitter:	Anette van Dorland
Date Deposited:	04 Oct 2013 14:48
Last Modified:	02 Mar 2023 23:22
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)