Mental health and cerebellar volume during adolescence in very-low-birth-weight infants: a longitudinal study

Violeta L Botellero1, Jon Skranes2, Knut Jørgen Bjuland1

  • 1Department of Laboratory Medicine, Children's and Women's Health, Faculty of Medicine, Medical Technology Research Center, Norwegian University of Science and Technology, P.O. Box 8905, 7491 Trondheim, Norway.

Insights

Very low birth weight (VLBW) adolescents with psychiatric disorders show smaller cerebellar volumes. These smaller cerebellar grey and white matter volumes may indicate a higher risk for mental health issues in young adulthood.

Area of Science:

  • Neuroscience
  • Developmental Psychology
  • Psychiatry

Background:

  • Very low birth weight (VLBW) is linked to increased psychiatric morbidity.
  • Cerebellar abnormalities are a known risk in VLBW individuals.

Purpose of the Study:

  • To investigate cerebellar volumes (grey and white matter) in VLBW individuals and controls at ages 15 and 19.
  • To examine changes in cerebellar volume and mental health between adolescence and young adulthood.

Main Methods:

  • Longitudinal study of VLBW (≤1500g) and control adolescents using MRI scans at 15 and 19 years.
  • Assessed psychiatric diagnoses (KSADS) and symptoms (ASEBA, ADHD Rating Scale-IV, CGAS).
  • Automated segmentation of cerebellar grey matter (GM) and white matter (WM) volumes using FreeSurfer.

Main Results:

  • VLBW adolescents exhibited higher rates of psychiatric disorders at both ages.
  • Cerebellar growth trajectories did not differ between VLBW and control groups.
  • VLBW individuals with persistent or developing psychiatric disorders had smaller cerebellar GM and WM volumes compared to controls and healthy VLBW peers.

Conclusions:

  • Reduced cerebellar volume in adolescents born VLBW may serve as a biomarker for psychiatric risk.
  • Smaller cerebellar GM and WM volumes correlate with poorer psychosocial function and inattention in VLBW individuals.
Abstract