4.4 Article

Two-dimensional assessment of cytoarchitecture in the superior temporal white matter in schizophrenia, major depressive disorder and bipolar disorder

Journal

SCHIZOPHRENIA RESEARCH
Volume 115, Issue 2-3, Pages 156-162

Publisher

ELSEVIER
DOI: 10.1016/j.schres.2009.09.028

Keywords

White matter; Planum temporale; Postmortem; Glia; Neuron; Oligodendrocyte

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Funding

  1. Stanley Medical Research Institute

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Evidence from brain imaging studies indicates that white matter volume, density and fractional anisotropy may be altered in individuals with schizophrenia and bipolar disorder. However, the molecular correlates of these deficits remain unknown. In this study we performed a cytoarchitectural assessment of the white matter adjacent to the planum temporale (PIT), an auditory association region located within the superior temporal gyrus, in subjects with schizophrenia, bipolar disorder, major depressive disorder and controls (15 subjects per group). Using two-dimensional measures, we recorded the cell density, distribution and size of all neurons and glial nuclei within this region. Glial density was lower in the schizophrenia group, relative to the control group. Neuronal density, neuronal size, and glial nuclear size did not differ between groups. No significant differences in neuronal clustering were observed in the patient groups. Further studies are required to examine whether the observed decrease in glial density within the superior temporal white matter in schizophrenia reflects a deficit in any individual glial cell population. (C) 2009 Elsevier B.V. All rights reserved.

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