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A follow-up MRI study of the fusiform gyrus and middle and inferior temporal gyri in schizophrenia spectrum.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Takahashi, Tsutomu Zhou, Shi-Yu Nakamura, Kazue Tanino, Ryoichiro Furuichi, Atsushi Kido, Mikio Kawasaki, Yasuhiro Noguchi, Kyo Seto, Hikaru Kurachi, Masayoshi Suzuki, Michio
Description	Country affiliation: Japan Author Affiliation: Takahashi T ( Department of Neuropsychiatry, University of Toyama, Toyama, Japan. tsutomu@med.u-toyama.ac.jp)
Abstract	While longitudinal magnetic resonance imaging (MRI) studies have demonstrated progressive gray matter reduction of the superior temporal gyrus (STG) during the early phases of schizophrenia, it remains largely unknown whether other temporal lobe structures also exhibit similar progressive changes and whether these changes, if present, are specific to schizophrenia among the spectrum disorders. In this longitudinal MRI study, the gray matter volumes of the fusiform, middle temporal, and inferior temporal gyri were measured at baseline and follow-up scans (mean inter-scan interval=2.7 years) in 18 patients with first-episode schizophrenia, 13 patients with schizotypal disorder, and 20 healthy controls. Both schizophrenia and schizotypal patients had a smaller fusiform gyrus than controls bilaterally at both time points, whereas no group difference was found in the middle and inferior temporal gyri. In the longitudinal comparison, the schizophrenia patients showed significant fusiform gyrus reduction (left, -2.6%/year; right, -2.3%/year) compared with schizotypal patients (left: -0.4%/year; right: -0.2%/year) and controls (left: 0.1%/year; right: 0.0%/year). However, the middle and inferior temporal gyri did not exhibit significant progressive gray matter change in all diagnostic groups. In the schizophrenia patients, a higher cumulative dose of antipsychotics during follow-up was significantly correlated with less severe gray matter reduction in the left fusiform gyrus. The annual gray matter loss of the fusiform gyrus did not correlate with that of the STG previously reported in the same subjects. Our findings suggest regional specificity of the progressive gray matter reduction in the temporal lobe structures, which might be specific to overt schizophrenia within the schizophrenia spectrum.
File Format	HTM / HTML
ISSN	02785846
Issue Number	8
Volume Number	35
e-ISSN	18784216
Journal	Progress in Neuro-Psychopharmacology and Biological Psychiatry
Language	English
Publisher	Elsevier
Publisher Date	2011-12-01
Publisher Place	Great Britain (UK)
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Discipline Psychiatry Schizophrenia Pathology Temporal Lobe Adolescent Adult Atrophy Female Follow-up Studies Humans Image Processing, Computer-assisted Longitudinal Studies Magnetic Resonance Imaging Male Organ Size Journal Article Research Support, Non-u.s. Gov't
Content Type	Text
Resource Type	Article
Subject	Biological Psychiatry Pharmacology

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