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Sex differences in brainstem structure volumes in patients with schizophrenia. 2023

Shintaro Aoyama, and Hiroto Okuda, and Natsu Furuzawa, and Hirokage Yoneda, and Daisuke Fujikane, and Kentaro Takai, and Ayumi Kuramitsu, and Yukimasa Muto, and Shunsuke Sugiyama, and Toshiki Shioiri, and Kazutaka Ohi
School of Medicine, Gifu University, Gifu, Japan.

Patients with schizophrenia (SZ) display moderate reductions in brainstem volumes, including the midbrain, pons, superior cerebellar peduncle, and medulla oblongata. Here, we investigated alterations in brainstem volumes between SZ patients and healthy controls (HCs) stratified by sex. T1-weighted MRI brain scans were processed with FreeSurfer v6.0 in 156 SZ patients (61 males/95 females) and 205 HCs (133/72). Of the brainstem structures, pons volumes were significantly reduced, particularly in male SZ patients. The decreased pons volumes were correlated with lower levels of education but not duration of illness in male patients. These findings suggest that the reduction in pons volume in male patients might be occurred before or around the onset of the disorder.

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