Urinary Organic Acids Increase After Clinical Stabilization of Hospitalized Children With Severe Acute Malnutrition

Allison Daniel, Matilda E. Arvidsson Kvissberg, Edward Senga, Christian J. Versloot, Philliness Prisca Harawa, Wieger Voskuijl, David Wishart, Rupasri Mandal, Robert Bandsma, Celine Bourdon*

*Corresponding author for this work

    Research output: Contribution to journalArticleAcademicpeer-review

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    Abstract

    Background: Despite a reduction of child mortality in low-income countries, acutely ill undernourished children still have an elevated risk of death. Those at highest risk are children with severe acute malnutrition (SAM) who often show metabolic dysregulations that remains poorly understood. Objective: We performed a pilot study to examine changes in urinary organic acids during nutritional rehabilitation of children with SAM, and to identify metabolites associated with the presence of edema or with mortality. Methods: This study included 76 children aged between 6 and 60 months, hospitalized for SAM at the Moyo Nutritional Rehabilitation and Research Unit in Blantyre, Malawi. Urine was collected at admission and 3 days after clinical stabilization and metabolomics were performed using gas chromatography-mass spectrometry. Metabolite concentrations were evaluated with both uni- and multivariate approaches. Results: Most metabolites increased 3 days after clinical stabilization, and total urinary concentration changed from 1.2 mM (interquartile range [IQR], 0.78-1.7) at admission to 3.8 mM (IQR, 2.1-6.6) after stabilization (P <.0001). In particular, 6 metabolites showed increases: 3-hydroxybutyric, 4-hydroxyhippuric, p-hydroxyphenylacetic, oxoglutaric, succinic, and lactic acids. Urinary creatinine was low at both time points, but levels did increase from 0.63 mM (IQR, 0.2-1.2) to 2.6 mM (IQR,1.6-4.4; P <.0001). No differences in urinary profiles were found between children who died versus those who survived, nor between children with severe wasting or edematous SAM. Conclusions: Total urinary metabolites and creatinine increase after stabilization and may reflect partial recovery of overall metabolism linked to refeeding. The use of urinary metabolites for risk assessment should be furthered explored.

    Original languageEnglish
    Pages (from-to)532-543
    Number of pages12
    JournalFood and nutrition bulletin
    Volume40
    Issue number4
    Early online date14-Jul-2019
    DOIs
    Publication statusPublished - Dec-2019

    Keywords

    • nutrition
    • urine metabolomics
    • gas chromatography-mass spectrometry (GC-MS)
    • severe acute malnutrition (SAM)
    • nutritional rehabilitation unit (NRU)
    • LACTATE
    • MORTALITY
    • KWASHIORKOR
    • METABOLISM
    • MARASMUS
    • MASS

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