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Influences of prenatal and postnatal maternal depression on amygdala volume and microstructure in young children

D J Wen1, J S Poh2, S N Ni1

  • 1Department of Biomedical Engineering, Clinical Imaging Research Center, National University of Singapore, Singapore, Singapore.

Translational Psychiatry
|April 26, 2017
PubMed

Insights

Maternal depression during pregnancy and after birth impacts child brain development, particularly in girls. Prenatal and postnatal maternal depressive symptoms are linked to amygdala structure changes in 4.5-year-old girls, highlighting the need for timely interventions.

Area of Science:

  • Neuroscience
  • Developmental Psychology
  • Psychiatry

Background:

  • Maternal depressive symptoms can affect offspring neurodevelopment.
  • These effects may differ based on child gender.
  • The amygdala plays a crucial role in emotional processing and is implicated in depression.

Purpose of the Study:

  • To investigate the association between prenatal and postnatal maternal depressive symptoms and the amygdala's volume and microstructure in 4.5-year-old children.
  • To determine if these associations are gender-dependent.

Main Methods:

  • Maternal depressive symptoms were assessed during pregnancy (Edinburgh Postnatal Depression Scale, EPDS) and postnatally (EPDS, Beck's Depression Inventory-II).
  • Child amygdala volume and fractional anisotropy (FA) were measured using structural MRI and diffusion tensor imaging at 4.5 years.
  • Statistical analyses examined the relationship between maternal depression measures and amygdala metrics, stratified by child gender.

Main Results:

  • Greater prenatal maternal depressive symptoms correlated with larger right amygdala volume in girls, but not boys.
  • Increased postnatal maternal depressive symptoms were associated with higher right amygdala FA in girls and the overall sample, but not boys.
  • Findings suggest a gender-specific impact of maternal depression on amygdala development.

Conclusions:

  • Maternal depressive symptoms, both prenatal and postnatal, are associated with alterations in the right amygdala structure in offspring, particularly girls.
  • The timing of maternal depressive symptom exposure (prenatal vs. postnatal) differentially affects amygdala development in girls.
  • Interventions targeting maternal depression during both prenatal and postnatal periods are crucial for mitigating adverse neurodevelopmental outcomes in girls.

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