title: Lack of normal gender differences of the perigenual cingulate gyrus in schizophrenia spectrum disorders. A magnetic resonance imaging study.
abstract: We have previously reported a lack of normal gender differences of the perigenual cingulate gyrus in patients with schizophrenia. The purpose of this study was to examine the perigenual cingulate gyrus morphology in patients with schizotypal disorder. We investigated volume of the gray and white matter of the perigenual cingulate gyrus in 26 patients with schizotypal disorder (14 males, 12 females) in comparison with 61 age- and gender-matched healthy controls (30 males, 31 females) and 58 schizophrenia patients (31 males, 27 females) using magnetic resonance imaging. The volumetric measures of the perigenual cingulate gyrus were compared among the three groups that were entered into the same multiple analysis of variance model. The gray and white matter volume of the perigenual cingulate gyrus in the schizotypal patients did not differ significantly from the values in the healthy controls or the schizophrenia patients. Similar to schizophrenia, however, the schizotypal patients showed a lack of normal gender differences of the perigenual cingulate gray matter seen in the healthy controls (females > males). These results suggest that both schizotypal and schizophrenia patients may share the same disruption of the normal pattern of gender differences of the perigenual cingulate gyrus.
authors.affiliation: Dept. of Neuropsychiatry, Toyama Medical and Pharmaceutical University, 2630 Sugitani, Toyama 930-0194, Japan. tsutomu@ms.toyama-mpu.ac.jp
authors.forename: Tsutomu
authors.initials: T
authors.lastname: Takahashi
authors.forename: Michio
authors.initials: M
authors.lastname: Suzuki
authors.forename: Shi-Yu
authors.initials: SY
authors.lastname: Zhou
authors.forename: Hirofumi
authors.initials: H
authors.lastname: Hagino
authors.forename: Yasuhiro
authors.initials: Y
authors.lastname: Kawasaki
authors.forename: Ikiko
authors.initials: I
authors.lastname: Yamashita
authors.forename: Shigeru
authors.initials: S
authors.lastname: Nohara
authors.forename: Kazue
authors.initials: K
authors.lastname: Nakamura
authors.forename: Hikaru
authors.initials: H
authors.lastname: Seto
authors.forename: Masayoshi
authors.initials: M
authors.lastname: Kurachi
mesh_terms: D000293:Adolescent; D000328:Adult; D000704:Analysis of Variance; D001931:Brain Mapping; D016022:Case-Control Studies; D003710:Demography; D005260:Female; D007839:Functional Laterality; D006179:Gyrus Cinguli / Q000473:pathology*; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods; D008279:Magnetic Resonance Imaging / Q000379:methods; D008297:Male; D012559:Schizophrenia / Q000473:pathology*; D012569:Schizotypal Personality Disorder / Q000473:pathology*; D012727:Sex Characteristics