The Impact of Milk on Gut Permeability, Fecal 16S rRNA Gene Microbiota Profiling, and Fecal Metabolomics in Children with Moderate Malnutrition in Sierra Leone: A Double-Blind, Randomized Controlled Trial

Minsoo Son, Marie L. Laury, Kevin B. Stephenson, Thaddaeus May, D. Taylor Hendrixson, Aminata Shamit Koroma, Amara Stevens Ngegbai, Jong Hee Song, Nino Naskidashvili, Young Ah Goo, Mark J. Manary

Research output: Contribution to journalArticlepeer-review

Abstract

Background: Bovine milk is a beneficial ingredient in teh treatment of malnutrition. Objectives: Our objectives were to determine the effect of dietary milk protein and milk carbohydrate on the intestinal permeability, fecal 16S rRNA gene configuration, and fecal metabolomics of children with moderate malnutrition. Methods: This was a randomized, double-blind, controlled trial among 413 children with wasting in rural Sierra Leone who received 1 of the following 4 supplementary foods, which differed in sources of protein and carbohydrate: milk protein and milk carbohydrate (MPMC), milk protein and vegetable carbohydrate (MPVC), vegetable protein and milk carbohydrate (VPMC), or a control group consuming entirely vegetable-based food (VPVC). After 4 wk, urine and stool were collected from participants enrolled with mid-upper arm circumference of <12.1 cm. Urine was analyzed for lactulose excretion (%L). Stool samples were subjected to both 16S rRNA gene analysis to assess β-diversity and untargeted metabolomic abundance. Results: Among the 386 children who completed permeability testing, the mean difference (95% CI) in %L excretion as compared with VPVC was 0.01 (−0.05, 0.07) for MPMC, 0.05 (−0.01, 0.11) for MPVC, and 0.01 (−0.05, 0.07) for VPMC. Of the 374 children who provided a stool sample that was analyzed, the β-diversity among bacterial taxa was similar between dietary groups (P > 0.05 for all comparisons). No significant differences between dietary groups were seen among the 20 most abundant bacterial taxa. Among the 5769 unique metabolomic features identified, greater flavonoid levels in VPVC were seen. Conclusions: Abnormal intestinal permeability do not improve with 4 wk of supplementary feeding. Fecal rRNA do not differ with consumption of different diets. This trial was registered at clinicaltrials.gov as NCT04216043.

Original languageEnglish
Pages (from-to)1114-1124
Number of pages11
JournalAmerican Journal of Clinical Nutrition
Volume120
Issue number5
DOIs
StatePublished - Nov 2024

Keywords

  • EED
  • gut health
  • microbiome
  • milk
  • moderate malnutrition

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