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Published in: European Journal of Nutrition 4/2017

01-06-2017 | Original Contribution

Choline and polyunsaturated fatty acids in preterm infants’ maternal milk

Authors: Christoph Maas, Axel R. Franz, Anna Shunova, Michaela Mathes, Christine Bleeker, Christian F. Poets, Erwin Schleicher, Wolfgang Bernhard

Published in: European Journal of Nutrition | Issue 4/2017

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Abstract

Background

Choline, docosahexaenoic acid (DHA), and arachidonic acid (ARA) are essential to fetal development, particularly of the brain. These components are actively enriched in the fetus. Deprivation from placental supply may therefore result in impaired accretion in preterm infants.

Objective

To determine choline, choline metabolites, DHA, and ARA in human breast milk (BM) of preterm infants compared to BM of term born infants.

Design

We collected expressed BM samples from 34 mothers (N = 353; postnatal day 6–85), who had delivered 35 preterm infants undergoing neonatal intensive care (postmenstrual age 30 weeks, range 25.4–32.0), and from mothers after term delivery (N = 9; postnatal day 6–118). Target metabolites were analyzed using tandem mass spectrometry and gas chromatography and reported as medians and 25th/75th percentiles.

Results

In BM, choline was mainly present in the form of phosphocholine and glycerophosphocholine, followed by free choline, phosphatidylcholine, sphingomyelin, and lyso-phosphatidylcholine. In preterm infants’ BM total choline ranged from 61 to 360 mg/L (median: 158 mg/L) and was decreased compared to term infants’ BM (range 142–343 mg/L; median: 258 mg/L; p < 0.01). ARA and DHA comprised 0.81 (range: 0.46–1.60) and 0.43 (0.15–2.42) % of total preterm BM lipids, whereas term BM values were 0.68 (0.52–0.88) and 0.35 (0.18–0.75) %, respectively. Concentrations of all target parameters decreased after birth, and frequently 150 ml/kg/d BM did not meet the estimated fetal accretion rates.

Conclusions

Following preterm delivery, BM choline concentrations are lower, whereas ARA and DHA levels are comparable versus term delivery. Based on these findings we suggest a combined supplementation of preterm infants’ BM with choline, ARA and DHA combined to improve the nutritional status of preterm infants.

Study registration

This study was registered at www.clinicaltrials.gov. Identifier: NCT01773902.
Appendix
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Metadata
Title
Choline and polyunsaturated fatty acids in preterm infants’ maternal milk
Authors
Christoph Maas
Axel R. Franz
Anna Shunova
Michaela Mathes
Christine Bleeker
Christian F. Poets
Erwin Schleicher
Wolfgang Bernhard
Publication date
01-06-2017
Publisher
Springer Berlin Heidelberg
Published in
European Journal of Nutrition / Issue 4/2017
Print ISSN: 1436-6207
Electronic ISSN: 1436-6215
DOI
https://doi.org/10.1007/s00394-016-1220-2

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