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Accelerated cerebral white matter development in preterm infants: a voxel-based morphometry study with diffusion
Mónica Giménez1, Maria J Miranda, A Peter Born
1Department of Psychiatry and Clinical Psychobiology, Faculty of Medicine, University of Barcelona, C/ Casanova 143, 08036, Barcelona, Spain. monicauab@hotmail.com <monicauab@hotmail.com>
Insights
Preterm infants show accelerated brain white matter maturation compared to full-term infants. This suggests the extrauterine environment may enhance sensorimotor stimulation, advancing brain development in preterm babies.
Area of Science:
- Neuroscience
- Developmental Biology
- Medical Imaging
Background:
- Preterm birth can impact brain development, with some studies indicating delays.
- The extrauterine environment presents unique sensory and motor challenges for preterm infants.
Purpose of the Study:
- To investigate white matter maturation in preterm infants compared to full-term infants.
- To explore the potential influence of the extrauterine environment on brain development.
Main Methods:
- Voxel-based analysis of diffusion tensor imaging (DTI) of the brain.
- Comparison between 27 preterm infants and 10 full-term infants at term equivalent age.
Main Results:
- Preterm infants demonstrated higher fractional anisotropy values in the sagittal stratum.
- Findings suggest accelerated white matter maturation in preterm infants.
- Results contrast with previous findings of developmental delays in preterm infants.
Conclusions:
- Increased sensorimotor stimulation in the extrauterine environment may accelerate white matter maturation.
- This study provides novel evidence for advanced white matter development in preterm infants.
- Further research is needed to determine if this acceleration is general or pathway-specific.
Abstract:
Twenty-seven preterm infants were compared to 10 full-term infants at term equivalent age using a voxel-based analysis of diffusion tensor imaging of the brain. Preterm infants exhibited higher fractional anisotropy values, which may suggest accelerated maturation, in the location of the sagittal stratum. While some earlier findings in preterm infants have suggested developmental delays, the results of this study are more consistent with accelerated white matter development, possibly as a result of increased sensorimotor stimulation in the extrauterine environment. These results are the first to suggest that the increased intensity of stimulation associated with preterm birth may advance the process of white matter maturation in the human brain. Questions remain about whether these findings reflect acceleration of the process of white matter maturation generally, or localized alterations induced specifically by activity in affected pathways.
