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Cerebellar volumes in pediatric maltreatment-related posttraumatic stress disorder
Michael D De Bellis1, Maragatha Kuchibhatla
1Healthy Childhood Brain Development and Developmental Traumatology Research Program, Duke University Medical Center, Durham, North Carolina 27710, USA. debel002@mc.duke.edu
Insights
Children with posttraumatic stress disorder (PTSD) from maltreatment show smaller cerebellum volumes. These brain differences correlate with trauma onset and duration, highlighting the cerebellum's role in pediatric PTSD.
Area of Science:
- Neuroscience
- Developmental Psychology
- Child Psychiatry
Background:
- Previous studies indicate structural brain differences in pediatric posttraumatic stress disorder (PTSD).
- Posterior fossa volumes, including the cerebellum, have not been extensively studied in relation to pediatric maltreatment-related PTSD.
- The cerebellum is recognized for its crucial role in emotional and cognitive development.
Purpose of the Study:
- To investigate the relationship between structural volumes of the cerebellum (hemispheres, vermis, brainstem) and clinical variables in pediatric maltreatment-related PTSD.
- To compare cerebellar volumes in children with PTSD due to maltreatment against those with generalized anxiety disorder and healthy controls.
Main Methods:
- Magnetic Resonance Imaging (MRI) brain scans were performed on 58 psychotropic-naïve children and adolescents with PTSD due to maltreatment.
- Comparison groups included 13 children with generalized anxiety disorder and 98 healthy non-abused children.
- Comprehensive psychiatric assessments were conducted on all participants.
Main Results:
- Smaller left, right, and total cerebellum volumes were observed in the pediatric PTSD group compared to controls.
- These cerebellar volume differences remained significant after adjusting for cerebral volume, sociodemographic factors, and IQ.
- Cerebellar volumes positively correlated with age of trauma onset and negatively with trauma duration; larger volumes were found in boys.
Conclusions:
- Findings support the presence of cerebellar volume differences in maltreated children and adolescents diagnosed with PTSD.
- Further research is necessary to fully understand the implications of these cerebellar alterations.
Background:
The results of previous studies suggest structural brain differences in pediatric maltreatment-related posttraumatic stress disorder (PTSD) However, posterior fossa volumes were not examined, despite the consensus that the cerebellum is important in emotional and cognitive development. We investigated the relationship between structural volumes of the cerebellum hemispheres, vermis, brainstem, and clinical variables in pediatric maltreatment-related PTSD.
Methods:
Fifty-eight psychotropic-naïve maltreated children and adolescents with DSM-IV PTSD were compared with two groups of pediatric subjects who had no DSM-IV criteria A trauma histories: 1) 13 with pediatric generalized anxiety disorder, and 2) 98 healthy non-abused children and adolescents. Subjects underwent a comprehensive psychiatric assessment and an anatomical magnetic resonance image brain scan.
Results:
Unadjusted means of the left, right, and total cerebellum were smaller in the PTSD group. The group differences remained significant in the left cerebellum, right cerebellum, and total cerebellum in the analyses adjusted for cerebral volume, sociodemographic, and IQ variables. Cerebellar volumes positively correlated with age of onset of the trauma that lead to PTSD and negatively correlated with the duration of the trauma that lead to PTSD. Cerebellar volumes were larger in boys versus girls, but there was no group x gender interaction. There were significant positive correlations between IQ measures and volumetric variables.
Conclusions:
The results support cerebellar volume differences in maltreated children and adolescents with PTSD. Further studies are warranted.
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