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Developmental changes in serotonin signaling: Implications for early brain function, behavior and adaptation.

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  • 1Department of Psychology, Wayne State University, 5057 Woodward Avenue, Detroit, MI 48202, USA.

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Summary
This summary is machine-generated.

Early life serotonin (5-HT) alterations impact brain development and mental health. These changes, influenced by genetics and environment, can shape behavioral risk and plasticity.

Keywords:
5-HTSSRI exposureepigeneticsfetal developmentmaternal depressionneurodevelopment

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Area of Science:

  • Neuroscience
  • Developmental Biology
  • Psychiatry

Background:

  • Serotonin (5-HT) is crucial for brain development, mood, stress, and psychiatric disorder risk.
  • Early life alterations in 5-HT signaling have lifelong implications for behavior and mental health.

Purpose of the Study:

  • To review the developmental origins of 5-HT signaling variations.
  • To examine the influence of genetic and epigenetic factors on 5-HT signaling.
  • To explore preclinical and clinical consequences of 5-HT changes, including SSRI exposure.

Main Methods:

  • Narrative review of preclinical and human evidence.
  • Synthesis of research on early life 5-HT signaling.
  • Analysis of genetic, epigenetic, and environmental interactions.

Main Results:

  • Developmental outcomes of altered prenatal 5-HT signaling are highly variable.
  • Interplay between biological (genetic/epigenetic) and environmental factors is critical.
  • 5-HT variations may influence sensitivity to environmental factors, acting as plasticity rather than solely risk factors.

Conclusions:

  • Early life 5-HT changes critically impact brain development and behavioral risk.
  • Understanding these changes provides insights into variations in typical brain development.
  • Factors altering 5-HT may promote developmental plasticity in response to environments.