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A novel role for maternal stress and microbial transmission in early life programming and neurodevelopment

Eldin Jašarević1, Ali B Rodgers1, Tracy L Bale1

  • 1Department of Animal Biology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA.

Neurobiology of Stress
|December 23, 2014
PubMed

Insights

Maternal stress impacts the vaginal microbiome, affecting offspring gut bacteria and neurodevelopment. This influences stress regulation and increases neuropsychiatric disease risk.

Area of Science:

  • Neuroscience
  • Microbiology
  • Developmental Biology

Background:

  • Prenatal and early life environmental factors influence offspring stress regulation.
  • Maternal microbial transmission to neonates occurs during a critical brain development period.
  • The vaginal microbiome is a key source of neonatal gut inoculation.

Purpose of the Study:

  • To explore how maternal insults alter the vaginal microbiome.
  • To examine the impact of these alterations on neonatal gut bacterial colonization.
  • To understand the effects on neuromodulatory metabolite production and offspring stress regulation.

Main Methods:

  • Review of existing literature on maternal insult, vaginal microbiome alterations, and offspring neurodevelopment.
  • Analysis of the relationship between vaginal microflora changes and neonatal gut microbial assembly.
  • Discussion of the role of microbial metabolites in shaping stress response pathways.

Main Results:

  • Maternal insults can disrupt the vaginal microbiome composition.
  • Altered maternal vaginal microbiota affect the establishment of the neonatal gut microbiome.
  • Changes in microbial metabolites are linked to altered offspring stress regulation.

Conclusions:

  • Disruptions in the maternal vaginal microbiome due to environmental insults can negatively impact offspring neurodevelopment.
  • This pathway, involving microbial transmission and metabolite production, is critical for understanding neuropsychiatric disease risk.
  • Targeting the maternal microbiome may offer novel strategies for preventing offspring stress dysregulation.

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