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Sexually dimorphic subcortical brain volumes in emerging psychosis

Egloff, Laura and Lenz, Claudia and Studerus, Erich and Harrisberger, Fabienne and Smieskova, Renata and Schmidt, André and Huber, Christian and Simon, Andor and Lang, Undine E. and Riecher-Rössler, Anita and Borgwardt, Stefan. (2018) Sexually dimorphic subcortical brain volumes in emerging psychosis. Schizophrenia research, 199. pp. 257-265.

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Abstract

In schizophrenic psychoses, the normal sexual dimorphism of the brain has been shown to be disrupted or even reversed. Little is known, however, at what time point in emerging psychosis this occurs. We have therefore examined, if these alterations are already present in the at-risk mental state (ARMS) for psychosis and in first episode psychosis (FEP) patients.; Data from 65 ARMS (48 (73.8%) male; age=25.1±6.32) and 50 FEP (37 (74%) male; age=27±6.56) patients were compared to those of 70 healthy controls (HC; 27 (38.6%) male; age=26±4.97). Structural T1-weighted images were acquired using a 3 Tesla magnetic resonance imaging (MRI) scanner. Linear mixed effects models were used to investigate whether subcortical brain volumes are dependent on sex.; We found men to have larger total brain volumes (p<0.001), and smaller bilateral caudate (p=0.008) and hippocampus volume (p<0.001) than women across all three groups. Older subjects had more GM and WM volume than younger subjects. No significant sex×group interaction was found.; In emerging psychosis there still seem to exist patterns of normal sexual dimorphism in total brain and caudate volume. The only structure affected by reversed sexual dimorphism was the hippocampus, with women showing larger volumes than men even in HC. Thus, we conclude that subcortical volumes may not be primarily affected by disrupted sexual dimorphism in emerging psychosis.
Faculties and Departments:03 Faculty of Medicine > Bereich Psychiatrie (Klinik) > Erwachsenenpsychiatrie UPK
03 Faculty of Medicine > Departement Klinische Forschung > Bereich Psychiatrie (Klinik) > Erwachsenenpsychiatrie UPK
03 Faculty of Medicine > Bereich Psychiatrie (Klinik) > Erwachsenenpsychiatrie UPK > Erwachsenenpsychiatrie (Riecher-Rössler)
03 Faculty of Medicine > Departement Klinische Forschung > Bereich Psychiatrie (Klinik) > Erwachsenenpsychiatrie UPK > Erwachsenenpsychiatrie (Riecher-Rössler)
UniBasel Contributors:Schmidt, André and Riecher-Rössler, Anita and Studerus, Erich
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:Elsevier
ISSN:0920-9964
e-ISSN:1573-2509
Note:Publication type according to Uni Basel Research Database: Journal article
Language:English
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Last Modified:03 Jun 2019 14:59
Deposited On:16 Aug 2018 13:11

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