Effects of microbiota-directed foods in gnotobiotic animals and undernourished children

Science. 2019 Jul 12;365(6449):eaau4732. doi: 10.1126/science.aau4732.

Abstract

To examine the contributions of impaired gut microbial community development to childhood undernutrition, we combined metabolomic and proteomic analyses of plasma samples with metagenomic analyses of fecal samples to characterize the biological state of Bangladeshi children with severe acute malnutrition (SAM) as they transitioned, after standard treatment, to moderate acute malnutrition (MAM) with persistent microbiota immaturity. Host and microbial effects of microbiota-directed complementary food (MDCF) prototypes targeting weaning-phase bacterial taxa underrepresented in SAM and MAM microbiota were characterized in gnotobiotic mice and gnotobiotic piglets colonized with age- and growth-discriminatory bacteria. A randomized, double-blind controlled feeding study identified a lead MDCF that changes the abundances of targeted bacteria and increases plasma biomarkers and mediators of growth, bone formation, neurodevelopment, and immune function in children with MAM.

Publication types

  • Randomized Controlled Trial
  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Bangladesh
  • Blood Proteins / analysis
  • Child Nutrition Disorders / diet therapy*
  • Child Nutrition Disorders / metabolism
  • Child Nutrition Disorders / microbiology*
  • Child, Preschool
  • Gastrointestinal Microbiome*
  • Germ-Free Life*
  • Host Microbial Interactions*
  • Humans
  • Infant
  • Infant Nutritional Physiological Phenomena*

Substances

  • Blood Proteins