Regional gray and white matter volume abnormalities in obsessive-compulsive disorder: a voxel-based morphometry study
| Autor: | Hirokuni Sanematsu, Tomohiro Nakao, Osamu Togao, Akio Hiwatashi, Hiroshi Honda, Takashi Yoshiura, Shigenobu Kanba, Maiko Nabeyama, Koji Yamashita, Eiki Nagao, Tomoyuki Noguchi, Akiko Nakagawa |
|---|---|
| Rok vydání: | 2009 |
| Předmět: |
Adult
Male Obsessive-Compulsive Disorder Internal capsule Statistics as Topic Neuroscience (miscellaneous) computer.software_genre behavioral disciplines and activities Brain mapping Functional Laterality White matter Young Adult Imaging Three-Dimensional Voxel mental disorders medicine Humans Radiology Nuclear Medicine and imaging Prefrontal cortex Psychiatric Status Rating Scales Analysis of Variance Brain Mapping medicine.diagnostic_test Brain Magnetic resonance imaging Voxel-based morphometry Anatomy Middle Aged Magnetic Resonance Imaging Psychiatry and Mental health medicine.anatomical_structure nervous system Orbitofrontal cortex Female Psychology Neuroscience computer |
| Zdroj: | Psychiatry research. 184(1) |
| ISSN: | 0165-1781 |
| Popis: | Previous studies have demonstrated both functional and structural abnormalities in the frontal-striatal-thalamic circuits in obsessive-compulsive disorder (OCD). The purpose of this study was to assess volume abnormalities not only of gray matter (GM), but also of white matter (WM) in patients with OCD using voxel-based morphometry (VBM). Subjects consisted of 23 patients with OCD and 26 normal control subjects. All patients were drug-free for at least 2 weeks before the study. Three-dimensional T1-weighed MR images were obtained in all subjects. Optimized voxel-based morphometry was performed to detect structural difference between the two groups. The patients with OCD demonstrated a significant reduction of GM volume in the bilateral medial prefrontal cortex, right premotor area, right orbitofrontal cortex (OFC), right dorsolateral prefrontal cortex, and bilateral temporal and occipital regions. The OCD patients also showed a significant WM volume increase in the right anterior limb of the internal capsule, right orbitofrontal region, and a significant WM volume reduction in the left anterior cingulate gyrus. Our findings are consistent with previous studies implicating dysfunction of the frontal cortex including the OFC. The results suggested that WM volume abnormalities in the orbitofrontal region, anterior limb of the internal capsule, and anterior cingulate gyrus would imply abnormalities in the pathways of frontal-striatal circuits. |
| Databáze: | OpenAIRE |
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