Eczema-protective probiotic alters infant gut microbiome functional capacity but not composition: sub-sample analysis from a RCT
2019
Probiotic Lactobacillus rhamnosus HN001 given in early life has been shown to reduce infant eczema risk, but its effect on gut microbiota development has not been quantitatively and functionally examined. The aim of this study was to investigate the impact of early life probiotic exposure on the composition and functional capacity of infant gut microbiota from birth to 2 years considering the effects of age, delivery mode, antibiotics, pets and eczema. We performed shotgun metagenomic sequencing analysis of 650 infant faecal samples, collected at birth, 3, 12, and 24 months, as part of a randomised, controlled, 3-arm trial assessing the effect of L. rhamnosus HN001, Bifidobacterium animalis subsp. lactis HN019 supplementation on eczema development in 474 infants. There was a 50% reduced eczema risk in the HN001 probiotic group compared to placebo. Both mothers (from 35 weeks gestation until 6 months post-partum if breastfeeding) and infants (from birth to 2 years) received either a placebo or one of two p...
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