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Nutrients 2014, 6(5), 1913-1930; doi:10.3390/nu6051913
Article

Urinary Metabolite Profiles in Premature Infants Show Early Postnatal Metabolic Adaptation and Maturation

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Received: 30 January 2014; in revised form: 14 April 2014 / Accepted: 30 April 2014 / Published: 12 May 2014
(This article belongs to the Special Issue Paediatric Nutrition)
View Full-Text   |   Download PDF [333 KB, updated 15 May 2014; original version uploaded 12 May 2014]
Abstract: Objectives: Early nutrition influences metabolic programming and long-term health. We explored the urinary metabolite profiles of 48 premature infants (birth weight < 1500 g) randomized to an enhanced or a standard diet during neonatal hospitalization. Methods: Metabolomics using nuclear magnetic resonance spectroscopy (NMR) was conducted on urine samples obtained during the first week of life and thereafter fortnightly. Results: The intervention group received significantly higher amounts of energy, protein, lipids, vitamin A, arachidonic acid and docosahexaenoic acid as compared to the control group. Enhanced nutrition did not appear to affect the urine profiles to an extent exceeding individual variation. However, in all infants the glucogenic amino acids glycine, threonine, hydroxyproline and tyrosine increased substantially during the early postnatal period, along with metabolites of the tricarboxylic acid cycle (succinate, oxoglutarate, fumarate and citrate). The metabolite changes correlated with postmenstrual age. Moreover, we observed elevated threonine and glycine levels in first-week urine samples of the small for gestational age (SGA; birth weight < 10th percentile for gestational age) as compared to the appropriate for gestational age infants. Conclusion: This first nutri-metabolomics study in premature infants demonstrates that the physiological adaptation during the fetal-postnatal transition as well as maturation influences metabolism during the breastfeeding period. Elevated glycine and threonine levels were found in the first week urine samples of the SGA infants and emerged as potential biomarkers of an altered metabolic phenotype.
Keywords: prematurity; very low birth weight; pediatric nutrition; intervention study; metabolomics; urine; nuclear magnetic resonance spectroscopy; glycine; threonine prematurity; very low birth weight; pediatric nutrition; intervention study; metabolomics; urine; nuclear magnetic resonance spectroscopy; glycine; threonine
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

Moltu, S.J.; Sachse, D.; Blakstad, E.W.; Strømmen, K.; Nakstad, B.; Almaas, A.N.; Westerberg, A.C.; Rønnestad, A.; Brække, K.; Veierød, M.B.; Iversen, P.O.; Rise, F.; Berg, J.P.; Drevon, C.A. Urinary Metabolite Profiles in Premature Infants Show Early Postnatal Metabolic Adaptation and Maturation. Nutrients 2014, 6, 1913-1930.

AMA Style

Moltu SJ, Sachse D, Blakstad EW, Strømmen K, Nakstad B, Almaas AN, Westerberg AC, Rønnestad A, Brække K, Veierød MB, Iversen PO, Rise F, Berg JP, Drevon CA. Urinary Metabolite Profiles in Premature Infants Show Early Postnatal Metabolic Adaptation and Maturation. Nutrients. 2014; 6(5):1913-1930.

Chicago/Turabian Style

Moltu, Sissel J.; Sachse, Daniel; Blakstad, Elin W.; Strømmen, Kenneth; Nakstad, Britt; Almaas, Astrid N.; Westerberg, Ane C.; Rønnestad, Arild; Brække, Kristin; Veierød, Marit B.; Iversen, Per O.; Rise, Frode; Berg, Jens P.; Drevon, Christian A. 2014. "Urinary Metabolite Profiles in Premature Infants Show Early Postnatal Metabolic Adaptation and Maturation." Nutrients 6, no. 5: 1913-1930.



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