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Related Experiment Videos

Cerebellar synaptic protein expression in schizophrenia.

S L Eastwood1, D Cotter, P J Harrison

  • 1University Department of Psychiatry, Warneford Hospital, Oxford, UK.

Neuroscience
|August 3, 2001
PubMed
Summary

Schizophrenia is linked to synaptic changes in the cerebellum, specifically reduced synaptophysin and complexin II. These cerebellar alterations may contribute to the disorder's pathophysiology.

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Area of Science:

  • Neuroscience
  • Psychiatry
  • Cell Biology

Background:

  • A cortico-subcortico-cerebellar neural circuit is implicated in schizophrenia.
  • The cerebellum's specific role and synaptic changes in schizophrenia require further investigation.

Purpose of the Study:

  • To investigate synaptic alterations in the cerebellar cortex of individuals with schizophrenia.
  • To measure the expression of synaptophysin, complexin I, and complexin II in the cerebellum.

Main Methods:

  • In situ hybridisation histochemistry and immunoautoradiography were used.
  • Cerebellar cortical tissue from 16 schizophrenia subjects and 16 controls was analyzed.
  • Expression levels of synaptophysin, complexin I, and complexin II were quantified.

Main Results:

  • Synaptophysin mRNA and complexin II mRNA and protein levels were decreased in schizophrenia subjects.
  • Complexin I mRNA and protein levels remained unchanged.
  • Antipsychotic drug administration in rats did not affect cerebellar mRNA expression.

Conclusions:

  • The study provides evidence of synaptic pathology in the cerebellum in schizophrenia.
  • These cerebellar alterations may disrupt neural circuits and contribute to cerebellar dysfunction in the disorder.

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