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© Research
Publication : The American journal of clinical nutrition

Nutritional strategies and gut microbiota composition as risk factors for necrotizing enterocolitis in very-preterm infants

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in The American journal of clinical nutrition - 28 Jun 2017

Rozé JC, Ancel PY, Lepage P, Martin-Marchand L, Al Nabhani Z, Delannoy J, Picaud JC, Lapillonne A, Aires J, Durox M, Darmaun D, Neu J, Butel MJ,

Link to Pubmed [PMID] – 28659297

Am. J. Clin. Nutr. 2017 Sep;106(3):821-830

The pathophysiology of necrotizing enterocolitis (NEC) remains poorly understood. We assessed the relation between feeding strategies, intestinal microbiota composition, and the development of NEC. We performed a prospective nationwide population-based study, EPIPAGE 2 (Etude Epidémiologique sur les Petits Ages Gestationnels), including preterm infants born at <32 wk of gestation in France in 2011. From individual characteristics observed during the first week of life, we calculated a propensity score for the risk of NEC (Bell's stage 2 or 3) after day 7 of life. We analyzed the relation between neonatal intensive care unit (NICU) strategies concerning the rate of progression of enteral feeding, the direct-breastfeeding policy, and the onset of NEC using general linear mixed models to account for clustering by the NICU. An ancillary propensity-matched case-control study, EPIFLORE (Etude Epidémiologique de la flore), in 20 of the 64 NICUs, analyzed the intestinal microbiota by culture and 16S ribosomal RNA gene sequencing. Among the 3161 enrolled preterm infants, 106 (3.4%; 95% CI: 2.8%, 4.0%) developed NEC. Individual characteristics were significantly associated with NEC. Slower and intermediate rates of progression of enteral feeding strategies were associated with a higher risk of NEC, with an adjusted OR of 2.3 (95% CI: 1.2, 4.5; = 0.01) and 2.0 (95% CI: 1.1, 3.5; = 0.02), respectively. Less favorable and intermediate direct-breastfeeding policies were associated with higher NEC risk as well, with an adjusted OR of 2.5 (95% CI: 1.1, 5.8; = 0.03) and 2.3 (95% CI: 1.1, 4.8; = 0.02), respectively. Microbiota analysis performed in 16 cases and 78 controls showed an association between and with NEC ( = 0.001 and = 0.002). A slow rate of progression of enteral feeding and a less favorable direct-breastfeeding policy are associated with an increased risk of developing NEC. For a given level of risk assessed by propensity score, colonization by and/or is significantly associated with NEC. This trial (EPIFLORE study) was registered at clinicaltrials.gov as NCT01127698.

https://www.ncbi.nlm.nih.gov/pubmed/28659297