Document Detail

Reduced cortical folding of the anterior cingulate cortex in obsessive-compulsive disorder.
MedLine Citation:
PMID:  19949720     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: Anterior cingulate cortex (ACC) abnormalities have been implicated consistently in the pathophysiology of obsessive-compulsive disorder (OCD), yet it remains unclear whether these abnormalities originated during early neurodevelopment. In this study, we examined the ACC sulcal/gyral patterns to investigate whether neurodevelopmental anomalies of the ACC were present in patients with OCD. We hypothesized that patients with OCD would show reduced cortical folding of the ACC compared with controls. METHODS: We used magnetic resonance imaging (MRI) of 169 healthy volunteers and 110 patients with OCD to examine the paracingulate sulcus and cingulate sulcus. We assessed cortical folding patterns according to established classification criteria and constructed 3 categories of paracingulate sulcus morphology according to its presence and anteroposterior extent: "prominent," "present" and "absent." We classified the cingulate sulcus as "interrupted" or "continuous" according to the interruptions in its course. In addition, we evaluated ACC sulcal asymmetry based on interhemispheric comparisons of paracingulate sulcus morphology. RESULTS: Analyses revealed that patients with OCD were significantly less likely than controls to show a well-developed left paracingulate sulcus: 50.0% of patients and 65.1% of controls showed a "prominent" or "present" paracingulate sulcus in the left hemisphere. However, there were no differences in regard to cingulate sulcus continuity, and patients also showed the same leftward ACC sulcal asymmetry as controls. LIMITATIONS: Our study was limited by the fact that we obtained the MRI scans from 2 different scanners, and we did not calculate cerebral fissurization as our study was restricted to 1 specific brain region. Moreover, patients and controls differed significantly in terms of sex ratio and IQ, although we controlled these variables as covariates. CONCLUSION: Our findings imply a subtle deviation in the early neurodevelopment of the ACC in patients with OCD, but the extent to which these anomalies contributed to the pathogenesis of OCD remains unclear. Further studies that link the ACC morphologic anomalies to the pathophysiology of OCD are recommended.
Geumsook Shim; Wi Hoon Jung; Jung-Seok Choi; Myung Hun Jung; Joon Hwan Jang; Ji-Young Park; Chi-Hoon Choi; Do-Hyung Kang; Jun Soo Kwon
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of psychiatry & neuroscience : JPN     Volume:  34     ISSN:  1488-2434     ISO Abbreviation:  J Psychiatry Neurosci     Publication Date:  2009 Nov 
Date Detail:
Created Date:  2009-12-01     Completed Date:  2010-02-17     Revised Date:  2010-09-28    
Medline Journal Info:
Nlm Unique ID:  9107859     Medline TA:  J Psychiatry Neurosci     Country:  Canada    
Other Details:
Languages:  eng     Pagination:  443-9     Citation Subset:  IM    
Department of Psychiatry, Seoul National University College of Medicine, Seoul, Korea.
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MeSH Terms
Cerebral Cortex / pathology,  physiology*
Functional Laterality / physiology
Gyrus Cinguli / pathology*,  physiology*
Image Processing, Computer-Assisted
Magnetic Resonance Imaging
Obsessive-Compulsive Disorder / pathology*,  psychology
Psychiatric Status Rating Scales
Young Adult

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