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Meta-Analysis of 89 Structural MRI Studies in Posttraumatic Stress Disorder and Comparison With Major Depressive Disorder
Open accessAbstract
OBJECTIVE: The authors conducted a comprehensive meta-analysis of MRI region-of-interest and voxel-based morphometry (VBM) studies in posttraumatic stress disorder (PTSD). Because patients have high rates of comorbid depression, an additional objective was to compare the findings to a meta-analysis of MRI studies in depression. METHOD: The MEDLINE database was searched for studies from 1985 through 2016. A total of 113 studies met inclusion criteria and were included in an online database. Of these, 66 were selected for the region-of-interest meta-analysis and 13 for the VBM meta-analysis. The region-of-interest meta-analysis was conducted and compared with a meta-analysis of major depressive disorder. Within the region-of-interest meta-analysis, three subanalyses were conducted that included control groups with and without trauma. RESULTS: In the region-of-interest meta-analysis, patients with PTSD compared with all control subjects were found to have reduced brain volume, intracranial volume, and volumes of the hippocampus, insula, and anterior cingulate. PTSD patients compared with nontraumatized or traumatized control subjects showed similar changes. Traumatized compared with nontraumatized control subjects showed smaller volumes of the hippocampus bilaterally. For all regions, pooled effect sizes (Hedges' g) varied from -0.84 to 0.43, and number of studies from three to 41. The VBM meta-analysis revealed prominent volumetric reductions in the medial prefrontal cortex, including the anterior cingulate. Compared with region-of-interest data from patients with major depressive disorder, those with PTSD had reduced total brain volume, and both disorders were associated with reduced hippocampal volume. CONCLUSIONS: The meta-analyses revealed structural brain abnormalities associated with PTSD and trauma and suggest that global brain volume reductions distinguish PTSD from major depression.
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“A recent meta-analysis confirmed, using voxel-based morphometry, that there were prominent volumetric reductions in the mPFC, including the ACC, when examining over 80 different MRI studies in PTSD compared to depression [159].”
From Prefrontal cortex, amygdala, and threat processing: implications for PTSD (2022) · cites this paper as [159]
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Metadata
- Authors
- Bromis, K., Calem, M., Reinders, A. A. T. S., Williams, S. C. R., & Kempton, M. J.
- Affiliations
- University of Sussex (GB)
- Corresponding author
- Kempton, Matthew J.
- Venue
- American Journal of Psychiatry
- Published
- 2018-10-01
- Volume
- 175
- Issue
- 10
- Pages
- 989-998
- ISSN
- 0002-953X (ISSN-L)
- 1535-7228
- PMC
- PMC6169727
- OpenAlex
- W2884899764
- Cited by
- 177
- References
- 37
- Citations by year
- 2026: 20 · 2025: 16 · 2024: 25 · 2023: 18 · 2022: 38 · 2021: 27 · 2020: 17 · 2019: 14 · 2018: 1
- FWCI
- 2.49
- Type
- journal article
- Language
- en
- Open access
- green
- www.ncbi.nlm.nih.gov
- Locations
- American Journal of Psychiatry (publishedVersion)
- PubMed (publishedVersion)
- Europe PMC (PubMed Central) (acceptedVersion)
- PubMed Central (acceptedVersion)
- Research Portal (King's College London) (submittedVersion, other-oa)
- Funders
- Wellcome Trust
- National Institute for Health and Care Research (NF-SI-0617-10150)
- Medical Research Council (MR/J008915/1)
- Topics
- Social Sciences › Psychology › Clinical Psychology › Posttraumatic Stress Disorder Research
- Health Sciences › Medicine › Clinical Neurology › Traumatic Brain Injury Research
- Social Sciences › Psychology › Clinical Psychology › Child Abuse and Trauma
- Keywords
- post-traumatic stress disorder, major depressive disorder, structural brain abnormalities, brain atrophy, hippocampal volume, anterior cingulate cortex, medial prefrontal cortex, insula, intracranial volume, trauma exposure, comorbid depression, voxel-based morphometry, region of interest analysis
- MeSH terms
- Adult, Brain, Depressive Disorder, Major, Major Depressive Disorder, Female, Humans, Magnetic Resonance Imaging, Male, Stress Disorders, Post-Traumatic, Databases, Factual
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