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Cortical white-matter microstructure in schizophrenia. Diffusion imaging study.

N Andreone1, M Tansella, R Cerini

  • 1Department of Medicine and Public Health, University of Verona, Italy.

The British Journal of Psychiatry : the Journal of Mental Science
|August 2, 2007
PubMed
Summary
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Diffusion-weighted imaging reveals white matter disruption in schizophrenia. This study in a large sample found greater apparent diffusion coefficients in frontal, temporal, and occipital white matter in individuals with schizophrenia.

Area of Science:

  • Neuroimaging
  • Psychiatric Disorders
  • White Matter Microstructure

Background:

  • Previous diffusion-weighted imaging (DWI) studies suggest cortical white-matter abnormalities in schizophrenia.
  • Evidence remains inconsistent across smaller studies.

Purpose of the Study:

  • To investigate cortical white-matter microstructure using DWI in a large, community-based sample of individuals with schizophrenia.
  • To confirm and expand upon previous findings of white matter disruption.

Main Methods:

  • Sixty-eight individuals with schizophrenia and 64 healthy controls participated.
  • Diffusion-weighted imaging (DWI) was used to measure the apparent diffusion coefficient (ADC) of white matter.
  • Regions of interest were defined in cortical lobes.

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Main Results:

  • The schizophrenia group exhibited significantly higher ADCs in frontal, temporal, and occipital white matter compared to controls.
  • These findings indicate altered white-matter microstructure in key brain regions.

Conclusions:

  • This study confirms widespread cortical white-matter microstructure disruption in schizophrenia across the largest sample to date using DWI.
  • Future research should integrate neuroimaging with genetic studies to explore myelin-related genes in early-stage schizophrenia and at-risk populations.