Cited by 1,192Schizophrenia research and treatmentNeurotransmitter Receptor Influence on BehaviorMental Health and Psychiatry

Genome-wide expression analysis reveals dysregulation of myelination-related genes in chronic schizophrenia

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Hakak, Yaron, Walker, John R., Li, Cheng, Wong, Wing Hung, Davis, Kenneth L., Buxbaum, Joseph D., Haroutunian, Vahram, Fienberg, Allen A.·2001·Proceedings of the National Academy of Sciences

Abstract

Neuropathological and brain imaging studies suggest that schizophrenia may result from neurodevelopmental defects. Cytoarchitectural studies indicate cellular abnormalities suggestive of a disruption in neuronal connectivity in schizophrenia, particularly in the dorsolateral prefrontal cortex. Yet, the molecular mechanisms underlying these findings remain unclear. To identify molecular substrates associated with schizophrenia, DNA microarray analysis was used to assay gene expression levels in postmortem dorsolateral prefrontal cortex of schizophrenic and control patients. Genes determined to have altered expression levels in schizophrenics relative to controls are involved in a number of biological processes, including synaptic plasticity, neuronal development, neurotransmission, and signal transduction. Most notable was the differential expression of myelination-related genes suggesting a disruption in oligodendrocyte function in schizophrenia.

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Crossref · 10.1073/pnas.081071198

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  • Genome-wide analysis reveals differential expression of myelination-related genes in schizophrenia.

    “Genome‐wide analysis reveals differential expression of myelination‐related genes in schizophrenia (Hakak et al., 2001 ).”
  • In psychiatric diseases such as schizophrenia, subtle impairment of myelin regulation and thalamocortical dysrhythmia are observed.

    “In psychiatric diseases such as schizophrenia, subtle impairment of myelin regulation and thalamocortical dysrhythmia are observed (Hakak et al., 2001 ; Nave & Ehrenreich, 2014 ; Schulman et al., 2011 ).”
  • In patients with chronic schizophrenia, HuD transcript levels are increased in the dorsolateral prefrontal cortex.

    “One study employed a DNA microarray on samples from patients with chronic schizophrenia and determined that HuD transcript levels were increased in the dorsolateral prefrontal cortex (Hakak et al. 2001).”
  • In the same chronic schizophrenia samples, the abundance of several mRNAs, including those encoding proteins involved in neuronal development, synaptic plasticity, and neurotransmission, is increased.

    “The authors also found that there was augmented abundance of several mRNAs including those encoding proteins involved in neuronal development, synaptic plasticity, and neurotransmission.”
  • Consistent findings across schizophrenia transcriptomic studies include dysregulation of GABAergic signalling, downregulation of oligodendrocyte/myelination, mitochondrial/energy metabolism, and synaptic genes, and upregulation of immune/inflammatory genes.

    “Despite variable results, consistent findings across studies can be identified, including dysregulation of GABAergic signalling102; downregulation of oligodendrocyte- and myelination-related genes103, mitochondrial function or energy metabolism104, and synaptic genes105; and upregulation of immune and inflammatory genes106.”

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Authors
Hakak, Y., Walker, J. R., Li, C., Wong, W. H., Davis, K. L., Buxbaum, J. D., Haroutunian, V., & Fienberg, A. A.
Affiliations
Genomics Institute of the Novartis Research Foundation (US)
Venue
Proceedings of the National Academy of Sciences
Published
2001-04-10
Volume
98
Issue
8
Pages
4746-4751
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2105097410
Cited by
1,192
References
40
Citations by year
2026: 10 · 2025: 9 · 2024: 15 · 2023: 19 · 2022: 18 · 2021: 31 · 2020: 40 · 2019: 33 · 2018: 22 · 2017: 29 · 2016: 37 · 2015: 52 · 2014: 43 · 2013: 39 · 2012: 68
FWCI
43.21
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • U.S. Department of Veterans Affairs
  • National Institutes of Health (5p01mh045212-05)
  • U.S. Public Health Service
  • National Institute of Mental Health (MH 45212)
Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Schizophrenia research and treatment
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
  • Social Sciences › Arts and Humanities › Philosophy › Mental Health and Psychiatry
Keywords
schizophrenia, myelination, oligodendrocytes, dorsolateral prefrontal cortex, gene expression, neurodevelopmental defects, neuronal connectivity, synaptic plasticity, postmortem brain, differential gene expression
MeSH terms
Chronic Disease, Gene Expression Regulation, Humans, Myelin Sheath, Schizophrenia, Genome, Human, Gene Expression Profiling

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