Altered grey matter volume and cortical thickness in patients with schizo-obsessive comorbidity

Psychiatry Res Neuroimaging. 2018 Jun 30:276:65-72. doi: 10.1016/j.pscychresns.2018.03.009. Epub 2018 Mar 28.

Abstract

Recent findings suggest that schizo-obsessive comorbidity (SOC) may be a unique diagnostic entity. We examined grey matter (GM) volume and cortical thickness in 22 patients with SOC, and compared them with 21 schizophrenia (SCZ) patients, 22 obsessive-compulsive disorder (OCD) patients and 22 healthy controls (HCs). We found that patients with SOC exhibited reduced GM volume in the left thalamus, the left inferior semi-lunar lobule of the cerebellum, the bilateral medial orbitofrontal cortex (medial oFC), the medial superior frontal gyrus (medial sFG), the rectus gyrus and the anterior cingulate cortex (aCC) compared with HCs. Patients with SOC also exhibited reduced cortical thickness in the right superior temporal gyrus (sTG), the right angular gyrus, the right supplementary motor area (SMA), the right middle cingulate cortex (mCC) and the right middle occipital gyrus (mOG) compared with HCs. Together with the differences in GM volume and cortical thickness between patients with SOC and patients with only SCZ or only OCD, these findings highlight the GM changes specific to patients with SOC.

Keywords: Cortical thickness; Grey matter volume; Obsessive-compulsive disorder; Schizo-obsessive comorbidity; Schizophrenia.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adolescent
  • Adult
  • Brain / diagnostic imaging
  • Brain / pathology
  • Case-Control Studies
  • Cerebellum / diagnostic imaging*
  • Cerebellum / pathology
  • Cerebral Cortex / diagnostic imaging*
  • Cerebral Cortex / pathology
  • Comorbidity
  • Female
  • Frontal Lobe / diagnostic imaging
  • Frontal Lobe / pathology
  • Gray Matter / diagnostic imaging*
  • Gray Matter / pathology
  • Gyrus Cinguli / diagnostic imaging
  • Gyrus Cinguli / pathology
  • Humans
  • Magnetic Resonance Imaging
  • Male
  • Motor Cortex / diagnostic imaging
  • Motor Cortex / pathology
  • Obsessive-Compulsive Disorder / diagnostic imaging*
  • Obsessive-Compulsive Disorder / epidemiology
  • Organ Size
  • Parietal Lobe / diagnostic imaging
  • Parietal Lobe / pathology
  • Prefrontal Cortex / diagnostic imaging
  • Prefrontal Cortex / pathology
  • Schizophrenia / diagnostic imaging*
  • Schizophrenia / epidemiology
  • Temporal Lobe / diagnostic imaging
  • Temporal Lobe / pathology
  • Thalamus / diagnostic imaging
  • Thalamus / pathology
  • Young Adult