Cited by 130Schizophrenia research and treatmentNeuroscience and Neuropharmacology ResearchNeurotransmitter Receptor Influence on Behavior

Clozapine reverses schizophrenia-related behaviours in the metabotropic glutamate receptor 5 knockout mouse: association with N-methyl-d-aspartic acid receptor up-regulation

Open access
Gray, Laura, van den Buuse, Maarten, Scarr, Elizabeth, Dean, Brian, Hannan, Anthony J.·2009·The International Journal of Neuropsychopharmacology

Abstract

Abnormalities in glutamatergic signalling are proposed in schizophrenia in light of the schizophreniform psychosis elicited by NMDA antagonists. The metabotropic glutamate receptor 5 (mGluR5) interacts closely with the NMDA receptor and is implicated in several behavioural endophenotypes of schizophrenia. We have demonstrated that mice lacking mGluR5 have increased sensitivity to the hyperlocomotive effects of the NMDA antagonist MK-801. Mice lacking mGluR5 also show abnormal locomotor patterns, reduced prepulse inhibition (PPI), and deficits on performance of a short-term spatial memory task on the Y-maze. Chronic administration of the antipsychotic drug clozapine ameliorated the locomotor disruption and reversed the PPI deficit, but did not improve Y-maze performance. Chronic clozapine increased NMDA receptor binding ([3H]MK-801) but did not alter dopamine D2 ([3H]YM-09151), 5-HT2A ([3H]ketanserin), or muscarinic M1/M4 receptor ([3H]pirenzepine), binding in these mice. These results demonstrate behavioural abnormalities that are relevant to schizophrenia in the mGluR5 knockout mouse and a reversal of behaviours with clozapine treatment. These results highlight both the interactions between mGluR5 and NMDA receptors in the determination of schizophreniform behaviours and the potential for the effects of clozapine to be mediated by NMDA receptor regulation.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1017/s1461145708009085

Cites

92 of 92 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Deletion of subunits of metabotropic glutamate receptors induces glutamatergic function deficits and schizophrenia-like symptoms.

    “Deletion of subunits of metabotropic glutamate receptors induce glutamatergic function deficits 82,83 and schizophrenia-like symptoms.84,85”

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Gray, L., van den Buuse, M., Scarr, E., Dean, B., & Hannan, A. J.
Affiliations
  • The University of Melbourne (AU)
  • Mental Health Research Institute (AU)
Corresponding author
Gray, Laura
Venue
The International Journal of Neuropsychopharmacology
Published
2008-07-02
Volume
12
Issue
01
Pages
45
ISSN
  • 1461-1457 (ISSN-L)
  • 1469-5111
OpenAlex
W2114342445
Cited by
130
References
92
Citations by year
2026: 3 · 2025: 3 · 2024: 5 · 2023: 9 · 2022: 4 · 2021: 3 · 2020: 11 · 2019: 13 · 2018: 2 · 2017: 6 · 2016: 3 · 2015: 9 · 2014: 8 · 2013: 6 · 2012: 15
FWCI
7.03
Type
journal article
Language
en
Open access
Locations
  • The International Journal of Neuropsychopharmacology (publishedVersion)
  • PubMed (publishedVersion)
  • National University of Singapore (submittedVersion)
  • Deakin Research Online (Deakin University) (submittedVersion)
  • Figshare (submittedVersion, cc-by)
Funders
  • Medical Research Council
  • National Health and Medical Research Council
Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Schizophrenia research and treatment
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
Keywords
clozapine, schizophrenia, metabotropic glutamate receptor 5, NMDA receptor, MK-801, prepulse inhibition, locomotor hyperactivity, spatial memory, glutamatergic signalling, receptor binding
MeSH terms
Animals, Autoradiography, Behavior, Animal, Benzamides, Clozapine, Exploratory Behavior, Mice, Inbred C57BL, Motor Activity, Radioligand Assay, Schizophrenia, Schizophrenic Psychology, Serotonin Antagonists, Reflex, Startle, Antipsychotic Agents, Up-Regulation, Receptors, N-Methyl-D-Aspartate, Receptors, Metabotropic Glutamate, Mice, Knockout, Excitatory Amino Acid Antagonists, Muscarinic Antagonists, Mice, Receptor, Metabotropic Glutamate 5

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review