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Human milk as a microbial pacemaker.

Liat Shenhav1, Meghan B Azad2, Michael A Silverman3

  • 1Institute for systems genetics, New York Grossman School of Medicine, New York University, New York, NY, USA; Department of Microbiology, New York Grossman School of Medicine, New York University, New York, NY, USA; Department of Obstetrics and Gynecology, New York Grossman School of Medicine, New York University, New York, NY, USA; Department of Computer Science, New York University, New York, NY, USA.

Cell Host & Microbe
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Summary
This summary is machine-generated.

Weaning triggers gut microbiome adaptation in infants, according to a strain-resolved analysis. Human milk acts as a key factor in guiding the development of these crucial gut microbes.

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Area of Science:

  • Microbiome research
  • Human development
  • Evolutionary biology

Background:

  • The gut microbiome's development is complex and influenced by various factors.
  • Understanding microbial succession from infancy is crucial for health.
  • Dietary transitions, like weaning, are hypothesized to impact microbial composition.

Purpose of the Study:

  • To perform a strain-resolved analysis of the gut microbiome from infancy to eight years.
  • To identify key developmental milestones and their impact on microbial adaptation.
  • To investigate the role of human milk in shaping the infant gut microbiome.

Main Methods:

  • Longitudinal cohort study tracking gut microbiome composition.
  • Strain-resolved sequencing techniques to analyze microbial populations.
  • Statistical analysis to correlate microbiome changes with developmental events like weaning.

Main Results:

  • Weaning was identified as a significant evolutionary trigger for gut microbial adaptation.
  • The study refined the timeline of gut microbiome development during early childhood.
  • Human milk was highlighted as a critical factor, acting as a pacemaker for microbial succession.

Conclusions:

  • Dietary shifts, particularly weaning, are pivotal events in shaping the infant gut microbiome.
  • Microbiome development follows a predictable pattern influenced by host-specific factors like milk consumption.
  • This research provides a detailed framework for understanding early-life microbiome dynamics.