Tracking regional brain growth up to age 13 in children born term and very preterm

Deanne K Thompson1,2,3,4, Lillian G Matthews5, Bonnie Alexander6,7

  • 1Victorian Infant Brain Study (VIBeS), Murdoch Children's Research Institute, 50 Flemington Road, Parkville, VIC, 3052, Australia. deanne.thompson@mcri.edu.au.

Nature Communications
|February 6, 2020
PubMed

Insights

This study tracked regional brain growth in very preterm (VP) and full-term (FT) children from infancy to adolescence. VP children showed slower brain development and smaller overall brain size compared to FT peers.

Area of Science:

  • Neuroscience
  • Developmental Biology
  • Pediatric Imaging

Background:

  • Longitudinal data on regional brain growth from infancy through adolescence is limited.
  • Understanding typical and atypical brain development is crucial for early intervention.

Purpose of the Study:

  • To describe serial regional brain growth in very preterm (VP) and full-term (FT) children.
  • To identify factors associated with brain growth differences and their impact on neurodevelopment.

Main Methods:

  • Brain Magnetic Resonance Imaging (MRI) was conducted on 216 VP and 45 FT children at term-equivalent age, 7 years, and 13 years.
  • Growth was analyzed across 82 distinct brain regions.
  • Perinatal brain abnormalities were assessed in the VP group.

Main Results:

  • Brain volumes increased significantly between term-equivalent age and 7 years, with faster growth observed in FT children.
  • Perinatal brain abnormalities in VP children correlated with reduced brain volume increase.
  • Between 7 and 13 years, brain volumes stabilized, with some regions growing and others shrinking.
  • VP children consistently exhibited smaller brain sizes compared to FT peers at 13 years.
  • Parieto-frontal region growth between 7 and 13 years in FT children was linked to higher intelligence.

Conclusions:

  • Very preterm birth is associated with altered regional brain growth trajectories throughout childhood and adolescence.
  • Parieto-frontal development correlates with cognitive outcomes in typically developing children.
  • This research provides critical insights into neurodevelopmental patterns in preterm populations.

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