Faecal volatile organic compounds in preterm babies at risk of necrotising enterocolitis: the DOVE study

Research output: Contribution to journalArticle

Authors

  • Chris Probert
  • Rosemary Greenwood
  • Arno Mayor
  • David Hughes
  • Raphael Aggio
  • Rachel Elizabeth Jackson
  • Liz Simcox
  • Heather Barrow
  • Marta García-Finana

Colleges, School and Institutes

External organisations

  • University Hospital Bristol
  • University of Liverpool
  • Birmingham Women's and Children's NHS Foundation Trust

Abstract

Background 

Early diagnosis of necrotising enterocolitis (NEC) may improve prognosis but there are no proven biomarkers.

 

Objective 

To investigate changes in faecal volatile organic compounds (VOCs) as potential biomarkers for NEC.

 

Design 

Multicentre prospective study.

 

Settings 

8 UK neonatal units.

 

Patients 

Preterm infants <34 weeks gestation.

 

Methods 

Daily faecal samples were collected prospectively from 1326 babies of whom 49 subsequently developed definite NEC. Faecal samples from 32 NEC cases were compared with samples from frequency-matched controls without NEC. Headspace, solid phase microextraction gas chromatography/mass spectrometry was performed and VOCs identified from reference libraries. VOC samples from cases and controls were compared using both discriminant and factor analysis methods.

 

Results 

VOCs were found to cluster into nine groups (factors), three were associated with NEC and indicated the possibility of disease up to 3–4 days before the clinical diagnosis was established. For one factor, a 1 SD increase increased the odds of developing NEC by 1.6 times; a similar decrease of the two other factors was associated with a reduced risk (OR 0.5 or 0.7, respectively). Discriminant analyses identified five individual VOCs, which are associated with NEC in babies at risk, each with an area under the receiver operating characteristics curve of 0.75–0.76, up to 4 days before the clinical diagnosis was made.

 

Conclusions 

Faecal VOCs are altered in preterm infants with NEC. These data are currently insufficient to enable reliable cotside detection of babies at risk of developing NEC and further work is needed investigate the role of VOCs in clarifying the aetiology of NEC.

Details

Original languageEnglish
Pages (from-to)F1-F6
Number of pages6
JournalArchives of disease in childhood. Fetal and neonatal edition
Early online date23 Dec 2019
Publication statusE-pub ahead of print - 23 Dec 2019

Keywords

  • necrotising enterocolitis, preterm infants, volatile organic compounds, longitudinal discriminant analysis