Functional and genetic predisposition to rhinovirus lower respiratory tract infections in prematurely born infants

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Title: Functional and genetic predisposition to rhinovirus lower respiratory tract infections in prematurely born infants
Authors: Drysdale, SB
Alcazar, M
Wilson, T
Smith, M
Zuckerman, M
Hodemaekers, HM
Janssen, R
Bont, L
Johnston, SL
Greenough, A
Item Type: Journal Article
Abstract: Term born infants are predisposed to human rhinovirus (HRV) lower respiratory tract infections (LRTI) by reduced neonatal lung function and genetic susceptibility. Our aim was to investigate whether prematurely born infants were similarly predisposed to HRV LRTIs or any other viral LRTIs. Infants born less than 36 weeks of gestational age were recruited. Prior to neonatal/maternity unit discharge, lung function (functional residual capacity by helium gas dilution and multiple breath washout, lung clearance index and compliance (Crs), and resistance (Rrs) of the respiratory system) was assessed and DNA samples assessed for eight single nucleotide polymorphisms (SNPs) in seven genes: ADAM33, IL10, MMP16 NFκB1A,SFTPC, VDR, and NOS2A. Infants were prospectively followed until 1 year corrected age. Nasopharyngeal aspirates (NPAs) were sent whenever an infant developed a LRTI and tested for 13 viruses. One hundred and thirty-nine infants were included in the analysis. Infants who developed HRV LRTIs had reduced Crs (1.6 versus 1.2 mL/cmH2O/kg, p = 0.044) at 36 weeks postmenstrual age. A SNP in the gene coding for the vitamin D receptor was associated with the development of HRV LRTIs and any viral LRTIs (p = 0.02). CONCLUSION: Prematurely born infants may have both a functional and genetic predisposition to HRV LRTIs. What is Known: • Term born infants are predisposed to rhinovirus lower respiratory tract (HRV LRTIs) infection by reduced neonatal lung function. • Term born infants requiring hospitalisation due to HRV bronchiolitis were more likely to have single nucleotide polymorphism (SNP) in the IL-10 gene. What is New: • Prematurely born infants who developed a HRV LRTI had lower C rs before maternity unit discharge. • A SNP in the gene coding for the vitamin D receptor was associated with the development of HRV LRTIs and overall respiratory viral LRTIs in prematurely born infants.
Issue Date: 1-Oct-2016
Date of Acceptance: 8-Sep-2016
URI: http://hdl.handle.net/10044/1/42331
DOI: https://dx.doi.org/10.1007/s00431-016-2780-0
ISSN: 1432-1076
Publisher: Springer Verlag
Start Page: 1943
End Page: 1949
Journal / Book Title: European Journal of Pediatrics
Volume: 175
Issue: 12
Copyright Statement: © Springer Verlag 2016. The final publication is available at Springer via http://dx.doi.org/10.1007/s00431-016-2780-0.
Sponsor/Funder: Commission of the European Communities
Asthma UK
Asthma UK
GlaxoSmithKline Services Unlimited
Funder's Grant Number: 233015
CH11SJ
CH11SJ
n/a
Keywords: Compliance and resistance of the respiratory system
Functional residual capacity
Human rhinovirus
Single nucleotide polymorphisms
Pediatrics
1114 Paediatrics And Reproductive Medicine
1117 Public Health And Health Services
Publication Status: Published
Appears in Collections:National Heart and Lung Institute
Faculty of Medicine



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