Severe acute malnutrition in childhood: hormonal and metabolic status at presentation, response to treatment, and predictors of mortality.

Published

Journal Article

Malnutrition is a major cause of childhood morbidity and mortality. To identify and target those at highest risk, there is a critical need to characterize biomarkers that predict complications prior to and during treatment.We used targeted and nontargeted metabolomic analysis to characterize changes in a broad array of hormones, cytokines, growth factors, and metabolites during treatment of severe childhood malnutrition. Children aged 6 months to 5 years were studied at presentation to Mulago Hospital and during inpatient therapy with milk-based formulas and outpatient supplementation with ready-to-use food. We assessed the relationship between baseline hormone and metabolite levels and subsequent mortality.Seventy-seven patients were enrolled in the study; a subset was followed up from inpatient treatment to the outpatient clinic. Inpatient and outpatient therapies increased weight/height z scores and induced striking changes in the levels of fatty acids, amino acids, acylcarnitines, inflammatory cytokines, and various hormones including leptin, insulin, GH, ghrelin, cortisol, IGF-I, glucagon-like peptide-1, and peptide YY. A total of 12.2% of the patients died during hospitalization; the major biochemical factor predicting mortality was a low level of leptin (P = .0002), a marker of adipose tissue reserve and a critical modulator of immune function.We have used metabolomic analysis to provide a comprehensive hormonal and metabolic profile of severely malnourished children at presentation and during nutritional rehabilitation. Our findings suggest that fatty acid metabolism plays a central role in the adaptation to acute malnutrition and that low levels of the adipose tissue hormone leptin associate with, and may predict, mortality prior to and during treatment.

Full Text

Duke Authors

Cited Authors

  • Bartz, S; Mody, A; Hornik, C; Bain, J; Muehlbauer, M; Kiyimba, T; Kiboneka, E; Stevens, R; Bartlett, J; St Peter, JV; Newgard, CB; Freemark, M

Published Date

  • June 2014

Published In

Volume / Issue

  • 99 / 6

Start / End Page

  • 2128 - 2137

PubMed ID

  • 24606092

Pubmed Central ID

  • 24606092

Electronic International Standard Serial Number (EISSN)

  • 1945-7197

International Standard Serial Number (ISSN)

  • 0021-972X

Digital Object Identifier (DOI)

  • 10.1210/jc.2013-4018

Language

  • eng