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Author Chawes, B.L.K.; Bischoff, A.L.; Kreiner-Moller, E.; Buchvald, F.; Hakonarson, H.; Bisgaard, H. url  doi
  Title DENND1B gene variants associate with elevated exhaled nitric oxide in healthy high-risk neonates Type Journal Article
  Year (down) 2015 Publication Pediatric Pulmonology Abbreviated Journal Pediatr Pulmonol  
  Volume 50 Issue 2 Pages 109-117  
  Keywords asthma; genetics; infant; nitric oxide  
  Abstract RATIONALE OF THE STUDY: Increased neonatal fraction of exhaled nitric oxide (FeNO) is associated with lung symptoms early in life, while predictors of neonatal FeNO levels are unknown. The objective of this study was to investigate perinatal and genetic predictors of FeNO in healthy at-risk neonates. METHODS: FeNO was measured during sedation by single-breath and tidal-breathing techniques in 253 one-month-old neonates from the Copenhagen Prospective Study on Asthma in Childhood (COPSAC2000 ) birth cohort. The risk factor analyses included genetic variants in DENND1B, Filaggrin, and ORMDL3; anthropometrics; demographics; socioeconomics; paternal atopy; maternal smoking, and mother's consumption of paracetamol and antibiotics during 3rd trimester; and neonatal bacterial airway colonization. RESULTS: FeNO values measured by the single-breath versus tidal-breathing technique yielded slightly higher values (median, 21.0 ppb; range, 2.0-74.0 ppb vs. 16.0 ppb; 1.0-67.0 ppb; P<0.0001) with increasing differences conditional on increasing FeNO values (P<0.0001). The multivariable analysis including all risk factors showed that the DENND1B rs2786098 C allele was associated with increasing levels of FeNO (additive model; +2.30 ppb per C allele; 95% CI, 0.10-5.00 ppb; P=0.04) and that children of atopic fathers had elevated FeNO (+2.90 ppb; 95% CI, 0.38-5.43 ppb; P=0.02). We did not detect association between the remaining risk factors and neonatal FeNO levels. CONCLUSION: Increased FeNO in healthy newborns seems strongly influenced by genetics including father's atopy and child's variants in the DENND1B locus at chromosome 1q31.3.  
  Address Copenhagen Prospective Studies on Asthma in Childhood; COPSAC, Health Sciences, University of Copenhagen, Copenhagen University Hospital, Gentofte, Ledreborg Alle 34, Gentofte, 2820, Copenhagen, Denmark  
  Corporate Author Thesis  
  Impact Factor 02,704 First Author Chawes, B.L.K. Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Senior Author Bisgaard, H.  
  ISSN 1099-0496 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:24347560 Approved no  
  Call Number Serial 28  
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