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The Maternal Brain in Context: Systemic Physiological Changes Across Pregnancy.

Hannah Grotzinger1, Magdalena Martínez-García1, Eliza C Miller2

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Pregnancy triggers significant maternal brain remodeling, influenced by hormonal shifts and changes in immune, cardiovascular, and microbiome systems. This review explores these interconnected adaptations for a holistic understanding.

Keywords:
cardiovasculaturematrescencemicrobiomeneurologypregnancyreproductive immunology

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Area of Science:

  • Neuroscience
  • Reproductive Biology
  • Immunology

Background:

  • Pregnancy involves profound physiological adaptations in maternal immune regulation and vascular systems.
  • Longitudinal studies reveal significant maternal nervous system remodeling linked to hormonal changes during pregnancy.
  • Understanding maternal brain adaptations requires an integrative approach considering multiple physiological systems.

Purpose of the Study:

  • To review the impact of endocrine, cardiovascular, microbiome, and immune systems on the maternal brain.
  • To elucidate the biological pathways shaping the maternal brain during pregnancy and postpartum.
  • To identify neural adaptations in both normative and adverse pregnancy outcomes.

Main Methods:

  • Literature review synthesizing findings from longitudinal human studies.
  • Integrative analysis of peripheral system changes (endocrine, cardiovascular, immune, microbiome) and their neural correlates.
  • Focus on normative and adverse pregnancy contexts.

Main Results:

  • Pregnancy induces coordinated adaptations across peripheral systems and the maternal brain.
  • Gonadal hormone production correlates with observed nervous system remodeling.
  • Interactions between immune, cardiovascular, and microbiome factors significantly influence maternal brain function.

Conclusions:

  • A holistic, integrative approach is crucial for understanding maternal brain plasticity during pregnancy.
  • Further research into these interconnected systems will illuminate mechanisms underlying maternal brain health and disease.
  • Identifying these pathways is key to addressing adverse pregnancy outcomes and supporting maternal well-being.