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Brain trust.

Susan E Erdman1

  • 1Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, MA, USA.

Comprehensive Psychoneuroendocrinology
|December 18, 2023
PubMed
Summary
This summary is machine-generated.

Specific microbes found in milk can increase oxytocin levels via a gut-brain pathway, influencing immunity and well-being. This discovery highlights a vital microbial-mammalian partnership for health and societal advancement.

Keywords:
Gut-brain-immuneL. reuteriProbioticSymbiontSymbioticVagus nerve

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Area of Science:

  • Microbiology
  • Neuroscience
  • Immunology

Background:

  • Oxytocin (OT) plays crucial roles in early life events, including milk release, neural development, and social bonding.
  • Research in 2011 explored gut microbial priming of the immune system and perinatal health, prompting investigation into the microbe-oxytocin connection.

Purpose of the Study:

  • To investigate the hypothesized symbiotic relationship between specific microbes and oxytocin production.
  • To elucidate the mechanisms and impacts of this microbial-oxytocin interaction on host physiology and behavior.

Main Methods:

  • Experiments involving specific milk-borne microbes and host animal models.
  • Vagus nerve-mediated gut-brain pathway analysis.
  • Assessment of immune functions, wound healing, reproductive fitness, body weight, and mental health indicators.

Main Results:

  • Demonstrated that certain milk-borne microbes significantly boost oxytocin levels.
  • Identified a vagus nerve-mediated gut-brain pathway responsible for this effect.
  • Observed impacts on immune functions, wound healing, and other physiological parameters in host animals.

Conclusions:

  • A profound connection exists between microbial symbionts and oxytocin, mediated by a gut-brain axis.
  • This oxytocin-microbe partnership is essential for mammalian health, influencing immunity, reproduction, and mental well-being.
  • The symbiosis represents a legacy promoting neurological stability, empathy, and potentially societal advancement.