A proton MRSI study of brain N-acetylaspartate level after 12 weeks of citalopram treatment in drug-naive patients with obsessive-compulsive disorder
- Authors
- Jang, Joon Hwan; Kwon, Jun Soo; Jang, Dong Pyo; Moon, Won-Jin; Lee, Jong-Min; Ha, Tae Hyun; Chung, Eun Chul; Kim, In Young; Kim, Sun I.
- Issue Date
- Jul-2006
- Publisher
- AMER PSYCHIATRIC PUBLISHING, INC
- Citation
- AMERICAN JOURNAL OF PSYCHIATRY, v.163, no.7, pp.1202 - 1207
- Indexed
- SCIE
SCOPUS
- Journal Title
- AMERICAN JOURNAL OF PSYCHIATRY
- Volume
- 163
- Number
- 7
- Start Page
- 1202
- End Page
- 1207
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/181255
- DOI
- 10.1176/appi.ajp.163.7.1202
- ISSN
- 0002-953X
- Abstract
- Objective: Reductions in the level of N-acetylaspartate within subcortical structures of patients with obsessive-compulsive disorder (OCD) have been reported in several studies. However, there have been, as yet, no reports regarding N-acetylaspartate levels in the prefrontal cortex of adult drug-naive OCD patients. The authors used proton magnetic resonance spectroscopic imaging (1H-MRSI) to investigate regional N-acetylaspartate level abnormalities and changes after 12 weeks of pharmacotherapy with citalopram in drug-naive OCD patients. Method: Thirteen drug-naive OCD patients and 13 age- and sex-matched healthy comparison subjects were included in this study. N-acetylaspartate levels ( obtained from ratios of N-acetylaspartate with creatine, choline, and creatine plus choline) in the prefrontal cortex, parietal cortex, anterior cingulate, posterior cingulate, frontal white matter, and parietal white matter were measured by H-1-MRSI. In OCD patients, measurements were taken before and after 12 weeks of citalopram treatment. Correlations between N-acetylaspartate concentrations in regions of interest and clinical measures were also assessed. Results: Drug-naive OCD patients exhibited significantly lower N-acetylaspartate levels in the prefrontal cortex, frontal white matter, and anterior cingulate at baseline than did comparison subjects. Significant increases in N-acetylaspartate level were detected in the prefrontal cortex and frontal white matter in OCD patients after 12 weeks of citalopram treatment. Conclusions: These data suggest that reductions in neuronal viability occur in the frontal region of OCD patients and that these reductions may be partly reversible.
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