4.7 Article

Lactation-dependent vertical transmission of natural probiotics from the mother to the infant gut through breast milk

Journal

FOOD & FUNCTION
Volume 13, Issue 1, Pages 304-315

Publisher

ROYAL SOC CHEMISTRY
DOI: 10.1039/d1fo03131g

Keywords

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Funding

  1. Wuxi Municipal Science and Education Strengthening Health Engineering Medical Key Discipline Construction Program [ZDXK003]
  2. Wuxi Young and Middle-aged Medical Talents Project [BJ2020075]
  3. Jiangsu Maternal and Child Health Research Project [F201908]
  4. Wuxi Commission of Health and Family Planning [Z202012, M202171]
  5. Nutrition and Care of Maternal & Child Research Fund Project of Biostime Institute of Nutrition Care [2020BINCMCF056]

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Key anaerobic gut-associated bacteria are transmitted from the mother to the infant's gut during lactation, particularly in the colostrum phase. Other bacteria, such as Streptococcus salivarius, Bifidobacterium longum, and Lactobacillus gasseri, can also be transferred between the maternal gut, breast milk, and newborn gut depending on specific amplicon sequence variants. This suggests that targeted isolation of key microorganisms from breast milk could be used to manipulate the microbiota of either breast milk or newborns for promoting neonatal health.
The transmission of certain bacteria from the mother's gut to the infant's gut via breast milk (BM) is critical for the offspring's immune system development. Dysbiosis of the BM microbiota can be caused by a variety of reasons, which can be influenced by probiotics delivered via the enteromammary route. The goal of this study was to investigate the bacteria that can be transmitted from the mother to the infant's intestine during various lactation periods in 19 mother-child dyads. Bacterial transmission is most common during the colostrum phase when bacteria with certain amplicon sequence variants (ASVs) enter the newborn intestine and inhabit it permanently. We have established that anaerobic gut-associated bacteria, such as Faecalibacterium, Blautia and Lachnoclostridium, transfer from the mother to the infant's gut with lactation dependence using the idea of weighted transfer ratios. Streptococcus salivarius, Bifidobacterium longum, and Lactobacillus gasseri are transferred from the maternal gut to the BM, as well as from the BM to the newborn gut, depending on different ASVs. These findings suggest that isolation of key microorganisms from breast milk could be utilized to modify the microbiota of BM or newborns by giving the mother a probiotic or adding it to artificial milk to promote neonatal health.

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