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Brain morphology in school-aged children with prenatal opioid exposure: A structural MRI study
Eivind Sirnes1, Leif Oltedal2, Hauke Bartsch3
1Department of Child and Adolescent Psychiatry, Division of Psychiatry, Haukeland University Hospital, Bergen, Norway; Department of Clinical Medicine, University of Bergen, Norway.
Insights
Prenatal opioid exposure in children was associated with reduced brain volumes in specific regions, including the basal ganglia and thalamus. Further research is needed to understand the long-term effects of prenatal opioid exposure on brain development.
Area of Science:
- Neuroscience
- Developmental Neuroscience
- Pediatric Imaging
Background:
- Prenatal opioid exposure may negatively impact fetal brain development, though findings are inconsistent.
- Some studies suggest structural brain changes in exposed children, potentially linked to neuropsychological deficits.
Purpose of the Study:
- To examine the relationship between prenatal opioid exposure and brain morphology in school-aged children.
- Investigate potential structural alterations in the brains of children exposed to opioids in utero.
Main Methods:
- A cross-sectional study utilizing magnetic resonance imaging (MRI) was conducted.
- 16 school-aged children (10-14 years) with prenatal opioid exposure were compared to matched controls.
- Automated brain volumetry was performed using FreeSurfer on T1-weighted MRI scans.
Main Results:
- Opioid-exposed children showed reduced volumes in the basal ganglia, thalamus, and cerebellar white matter.
- No significant differences were observed in global brain volumes (total brain, cerebral cortex, cerebral white matter).
Conclusions:
- Prenatal opioid exposure is associated with reduced regional brain volumes in children.
- These findings support the hypothesis that opioids can adversely affect the developing fetal brain.
- Further investigation is required to determine causality and functional implications.
Background:
Both animal and human studies have suggested that prenatal opioid exposure may be detrimental to the developing fetal brain. However, results are somewhat conflicting. Structural brain changes in children with prenatal opioid exposure have been reported in a few studies, and such changes may contribute to neuropsychological impairments observed in exposed children.
Aim:
To investigate the association between prenatal opioid exposure and brain morphology in school-aged children.
Study Design:
A cross-sectional magnetic resonance imaging (MRI) study of prenatally opioid-exposed children and matched controls.
Subjects:
A hospital-based sample (n=16) of children aged 10-14years with prenatal exposure to opioids and 1:1 sex- and age-matched unexposed controls.
Outcome Measures:
Automated brain volume measures obtained from T1-weighted MRI scans using FreeSurfer.
Results:
Volumes of the basal ganglia, thalamus, and cerebellar white matter were reduced in the opioid-exposed group, whereas there were no statistically significant differences in global brain measures (total brain, cerebral cortex, and cerebral white matter volumes).
Conclusions:
In line with the limited findings reported in the literature to date, our study showed an association between prenatal opioid exposure and reduced regional brain volumes. Adverse effects of opioids on the developing fetal brain may explain this association. However, further research is needed to explore the causal nature and functional consequences of these findings.
