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Related Experiment Videos

Glutamate receptor expression in schizophrenic brain.

J H Meador-Woodruff1, D J Healy

  • 1Mental Health Research Institute, Department of Psychiatry, University of Michigan, 205 Zina Pitcher Place, Ann Arbor, MI, USA. jimmw@umich.edu

Brain Research. Brain Research Reviews
|March 17, 2000
PubMed
Summary
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Schizophrenia may involve abnormal glutamatergic neurotransmission. Studies show decreased AMPA and kainate receptors in the hippocampus and altered NMDA receptor expression in the brain for schizophrenia patients.

Area of Science:

  • Neuroscience
  • Psychiatry
  • Molecular Biology

Background:

  • Glutamatergic dysfunction is a proposed mechanism in schizophrenia pathophysiology.
  • Ionotropic glutamate receptors, including NMDA, AMPA, and kainate receptors, are implicated in schizophrenia.

Purpose of the Study:

  • To investigate the expression of glutamate receptors in postmortem brain samples from individuals with schizophrenia compared to controls.
  • To evaluate the role of ionotropic glutamate receptors in the neurobiology of schizophrenia.

Main Methods:

  • Analysis of gene expression at multiple levels (transcripts, protein, binding sites) in postmortem brain tissue.
  • Comparison of receptor expression patterns between schizophrenic and control subjects.

Main Results:

Related Experiment Videos

  • AMPA receptor expression is significantly decreased in the hippocampus of schizophrenic brains.
  • Kainate receptor expression shows similar reductions in the schizophrenic hippocampus.
  • Abnormal expression of the NMDAR1 subunit of the NMDA receptor is observed in some cortical regions in schizophrenia.

Conclusions:

  • The findings support the hypothesis of altered glutamatergic neurotransmission in schizophrenia.
  • Ionotropic glutamate receptors, particularly AMPA and kainate, are dysregulated in the brains of individuals with schizophrenia.