Decreased prefrontal cortical volume associated with increased bedtime cortisol in traumatized youth
- PMID: 20579974
- PMCID: PMC2921458
- DOI: 10.1016/j.biopsych.2010.05.010
Decreased prefrontal cortical volume associated with increased bedtime cortisol in traumatized youth
Abstract
Background: The purpose of this study was to investigate prefrontal cortex (PFC) volumes in youth with posttraumatic stress symptoms (PTSS) and explore the relationship between cortisol secretion and PFC volumes.
Methods: Total brain tissue volumes, segmented areas of the PFC, and diurnal cortisol secretion were examined in a sample of 33 youth aged 10 to 16 years. Cerebral volumes were available for 45 subjects (30 PTSS and 15 control subjects).
Results: Youth with PTSS had significantly decreased total brain tissue and total cerebral gray volumes in comparison with healthy control subjects. While controlling for total cerebral gray volume, the PTSS group demonstrated decreased left ventral and left inferior prefrontal gray volumes. A significant negative association was found between prebedtime cortisol levels and left ventral PFC gray volumes for the full sample.
Conclusions: Findings suggest associations between posttraumatic stress and PFC neurodevelopment. Findings also suggest a link between PFC development and cortisol secretion.
Copyright 2010 Society of Biological Psychiatry. Published by Elsevier Inc. All rights reserved.
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Comment in
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Cortisol and brain: beyond the hippocampus.Biol Psychiatry. 2011 Feb 15;69(4):e9; author reply e11. doi: 10.1016/j.biopsych.2010.08.035. Epub 2010 Nov 20. Biol Psychiatry. 2011. PMID: 21093849 No abstract available.
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