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Variations in Brain Volume and Growth in Young Children With Type 1 Diabetes

Paul K Mazaika1, Stuart A Weinzimer2, Nelly Mauras3

  • 1Center for Interdisciplinary Brain Sciences Research, Department of Psychiatry and Behavioral Sciences, Stanford University School of Medicine, Stanford, CA mazaika@stanford.edu.

Diabetes
|October 30, 2015
PubMed

Insights

Early-onset type 1 diabetes impacts developing brains, showing reduced growth in gray and white matter. Fluctuating blood glucose levels in children with diabetes correlate with these brain volume changes.

Area of Science:

  • Neuroscience
  • Pediatrics
  • Endocrinology

Background:

  • Type 1 diabetes (T1D) onset in childhood affects brain development during a critical maturation period.
  • Understanding T1D's impact on the brain is crucial for early intervention and management strategies.

Purpose of the Study:

  • To investigate the effects of early-onset T1D on brain structure growth in children.
  • To determine the relationship between glycemic control and brain volume changes in pediatric T1D.

Main Methods:

  • Longitudinal structural MRI scans were conducted on 141 children with T1D (aged 4-10) and 69 controls over 18 months.
  • Mean HbA1c levels were monitored, and correlations between glycemic fluctuations and brain volume changes were analyzed.

Main Results:

  • Children with T1D exhibited significantly less growth in cortical gray matter volume, cortical surface area, and white matter volume compared to controls.
  • Changes in blood glucose levels correlated negatively with gray and white matter volume changes.
  • Hyperglycemia and glycemic variability were linked to reduced development of brain surface curvature.

Conclusions:

  • Early-onset T1D adversely affects gray and white matter growth in children, even with glucose levels within current treatment guidelines.
  • Glycemic fluctuations may contribute to observed brain volume alterations in pediatric T1D.
  • These findings highlight the need for optimized glycemic management to protect brain development in children with T1D.

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