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Racial Variation in the Association between Childhood Depression and Frontal Pole Volume among American Children

Shervin Assari1,2

  • 1Department of Family Medicine, Charles R. Drew University of Medicine and Science, Los Angeles, CA, USA.

Research in Health Science
|December 7, 2020
PubMed

Insights

Major Depressive Disorder (MDD) is linked to smaller frontal pole brain volume in children. This association differs by race, with a steeper inverse relationship observed in Black children compared to White children.

Area of Science:

  • Neuroscience
  • Developmental Psychology
  • Child Psychiatry

Background:

  • Major Depressive Disorder (MDD) is linked to prefrontal cortex (PFC) alterations.
  • Understanding racial differences in MDD's impact on brain structure is crucial.

Purpose of the Study:

  • Investigate racial disparities in the association between MDD and frontal pole volume in 9-10-year-old US children.
  • Examine how race moderates the relationship between MDD and frontal pole volume.

Main Methods:

  • Cross-sectional study using the Adolescent Brain Cognitive Development (ABCD) dataset.
  • Included 10,185 American children aged 9-10.
  • MDD assessed via K-SADS; frontal pole volume measured using structural MRI; race as moderator; analyzed with mixed-effects regression.

Main Results:

  • MDD was associated with smaller frontal pole volume in the overall sample.
  • Race significantly interacted with MDD's effect on frontal pole volume.
  • The association was stronger in White children than Black children.

Conclusions:

  • The inverse association between MDD and frontal pole volume is steeper in Black American children than White American children.
  • White children with and without MDD had similar frontal pole volumes, while Black children showed greater differences.
  • Further research is needed to explore if treatment access or MDD chronicity contributes to these racial disparities.
Abstract

Keywords:
cerebral cortexdepressionfrontal polefrontal pole volumepopulation groupsprefrontal cortex

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