Cited by 18Schizophrenia research and treatmentNeurotransmitter Receptor Influence on BehaviorNeuroscience and Neuropharmacology Research

NeuN+ neuronal nuclei in non-human primate prefrontal cortex and subcortical white matter after clozapine exposure

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Halene, Tobias B., Kozlenkov, Alexey, Jiang, Yan, Mitchell, Amanda C., Javidfar, Behnam, Dincer, Aslihan, Park, Royce, Wiseman, Jennifer +7 more·2016·Schizophrenia Research

Abstract

Increased neuronal densities in subcortical white matter have been reported for some cases with schizophrenia. The underlying cellular and molecular mechanisms remain unresolved. We exposed 26 young adult macaque monkeys for 6 months to either clozapine, haloperidol or placebo and measured by structural MRI frontal gray and white matter volumes before and after treatment, followed by observer-independent, flow-cytometry-based quantification of neuronal and non-neuronal nuclei and molecular fingerprinting of cell-type specific transcripts. After clozapine exposure, the proportion of nuclei expressing the neuronal marker NeuN increased by approximately 50% in subcortical white matter, in conjunction with a more subtle and non-significant increase in overlying gray matter. Numbers and proportions of nuclei expressing the oligodendrocyte lineage marker, OLIG2, and cell-type specific RNA expression patterns, were maintained after antipsychotic drug exposure. Frontal lobe gray and white matter volumes remained indistinguishable between antipsychotic-drug-exposed and control groups. Chronic clozapine exposure increases the proportion of NeuN+ nuclei in frontal subcortical white matter, without alterations in frontal lobe volumes or cell type-specific gene expression. Further exploration of neurochemical plasticity in non-human primate brain exposed to antipsychotic drugs is warranted.

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Authors
Halene, T. B., Kozlenkov, A., Jiang, Y., Mitchell, A. C., Javidfar, B., Dincer, A., Park, R., Wiseman, J., Croxson, P. L., Giannaris, E. L., Hof, P. R., Roussos, P., Dracheva, S., Hemby, S. E., & Akbarian, S.
Affiliations
  • Icahn School of Medicine at Mount Sinai (US)
  • University of Massachusetts Chan Medical School (US)
  • Wake Forest University Health Sciences (US)
Corresponding author
Halene, Tobias B.
Venue
Schizophrenia Research
Publisher
Elsevier BV
Published
2016-02
Volume
170
Issue
2-3
Pages
235-244
ISSN
0920-9964 (ISSN-L)
OpenAlex
W2225132318
Cited by
18
References
79
Citations by year
2026: 1 · 2025: 1 · 2024: 3 · 2022: 2 · 2021: 3 · 2020: 2 · 2019: 2 · 2017: 2 · 2016: 2
FWCI
1.78
Type
journal article
Language
en
Open access
Locations
  • Schizophrenia Research (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • The Journal of the American Medical Association (JAMA) Network (American Medical Association) (submittedVersion)
Funders
  • Brain and Behavior Research Foundation
  • Medical and Life Sciences Research Fund
  • National Institutes of Health (MH074313)
Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Schizophrenia research and treatment
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
Keywords
clozapine, antipsychotic drugs
MeSH terms
Administration, Oral, Animals, Brain, Cell Count, Clozapine, Female, Flow Cytometry, Haloperidol, Immunohistochemistry, Macaca, Magnetic Resonance Imaging, Male, Nerve Tissue Proteins, Neuronal Plasticity, Neurons, Oligodendroglia, Organ Size, Random Allocation, Antipsychotic Agents, White Matter, Gray Matter

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