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Regional brain volume abnormalities and long-term cognitive outcome in preterm infants

B S Peterson1, B Vohr, L H Staib

  • 1Yale Child Study Center, 230 S Frontage Rd, New Haven, CT 06520, USA. bradley.peterson@yale.edu

JAMA
|October 18, 2000
PubMed

Insights

Preterm birth is linked to smaller brain volumes in specific regions, impacting cognitive development. These brain structure differences in prematurely born children correlate with lower IQ scores.

Area of Science:

  • Neuroscience
  • Developmental Neuroscience
  • Pediatric Neurology

Background:

  • Preterm infants often experience long-term cognitive and behavioral issues.
  • The impact of premature birth stress on brain maturation and structure is not fully understood.
  • Abnormalities in brain structure may contribute to cognitive deficits in preterm children.

Purpose of the Study:

  • To compare regional brain volumes between term-born and preterm-born children.
  • To investigate the association between regional brain volumes and cognitive outcomes in preterm children.

Main Methods:

  • A case-control study involving 25 eight-year-old preterm children and 39 term control children.
  • Structural magnetic resonance imaging (MRI) was used to measure volumes of various brain regions.
  • Regional brain volumes were correlated with cognitive measures and perinatal variables.

Main Results:

  • Preterm children showed significantly smaller cortical volumes, particularly in sensorimotor and premotor areas.
  • Enlarged ventricles and smaller volumes were observed in the cerebellum, basal ganglia, amygdala, hippocampus, and corpus callosum in preterm children.
  • Smaller sensorimotor and midtemporal cortical volumes were associated with lower IQ scores in preterm children.

Conclusions:

  • Preterm birth is associated with region-specific, long-term reductions in brain volume.
  • Morphological brain abnormalities in preterm children correlate with poorer cognitive outcomes.
  • These findings highlight the lasting impact of preterm birth on brain development and function.
Abstract

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