Cited by 157Schizophrenia research and treatmentNeurotransmitter Receptor Influence on BehaviorNeuroscience and Neuropharmacology Research

Transient N-methyl-D-aspartate receptor blockade in early development causes lasting cognitive deficits relevant to schizophrenia

Stefani, Mark Renato, Moghaddam, Bita·2005·Biological Psychiatry

Abstract

Background Aberrant N-methyl-D-aspartate (NMDA) receptor-mediated glutamatergic transmission has been implicated in schizophrenia. We studied whether transient inhibition of NMDA receptor activity during early postnatal development would produce a behavioral phenotype resembling that of individuals who are susceptible to develop schizophrenia.Methods Rat pups were given injections of the NMDA channel blocker MK801 on postnatal days 7 through 10. This period is akin to the prenatal second trimester of primate development. Cognitive function was tested in adulthood.Results Treatment with MK801 impaired cognitive flexibility and working memory. The impairment in cognitive flexibility was due to increased perseverative behavior. Treatment did not affect locomotor activity or recognition memory.Conclusions These results suggest that a brief disruption of NMDA receptors during a sensitive period of cortical development is sufficient to produce selective cognitive deficits that are relevant to schizophrenia.

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Crossref · 10.1016/j.biopsych.2004.11.031

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  • A milder NMDAR antagonism regime caused long-lasting behavioural changes and a specific long-lasting decrease in cortical PVI numbers, mimicking a key pathological feature of schizophrenia.

    “A milder antagonism regime caused long-lasting behavioural changes and a specific longlasting decrease in cortical PVI numbers 29 , mimicking a key pathological feature of schizophrenia 2 .”
  • NMDAR antagonism likely induces a hyperglutamatergic state by reducing the activity of cortical interneurons, which particularly rely on NMDARs for their excitatory drive early in development.

    “NMDAR antagonism likely induces a hyperglutamatergic state by reducing the activity of cortical interneurons, which particularly rely on NMDARs for their excitatory drive early in development 29,79 .”
  • PVI function itself might be permanently impaired as a result of relatively mild transient NMDAR hypofunction in the developing mouse that does not induce neuronal death.

    “Moreover, and as a result, PVI function itself might be permanently impaired as a result of relatively mild transient NMDAR hypofunction in the developing mouse that does not induce neuronal death 29,80 .”
  • The mechanism underlying the proposed loss of PVI phenotype involves cortical disinhibition leading to neuronal IL-6 production and consequent activation of NADPH oxidase, which generates H2O2.

    “The mechanism underlying this proposed loss of PVI phenotype involves cortical disinhibition leading to neuronal IL-6 production and consequent activation of NADPH oxidase, which generates H 2 O 2 29 .”

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Authors
Stefani, M. R., & Moghaddam, B.
Affiliations
University of Pittsburgh (US)
Corresponding author
Stefani, Mark Renato
Venue
Biological Psychiatry
Publisher
Elsevier BV
Published
2005-02
Volume
57
Issue
4
Pages
433-436
ISSN
0006-3223 (ISSN-L)
OpenAlex
W1983202833
Cited by
157
References
32
Citations by year
2026: 6 · 2025: 1 · 2024: 2 · 2023: 2 · 2022: 2 · 2021: 7 · 2020: 2 · 2019: 13 · 2018: 3 · 2017: 6 · 2016: 4 · 2015: 12 · 2014: 9 · 2013: 15 · 2012: 16
FWCI
5.41
Type
journal article
Language
en
Open access
closed
Locations
  • Biological Psychiatry (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Institute of Mental Health (R21 MH65026, K02 MH01616, K02MH001616, R37MH048404, R37-MH48404, R21MH065026)
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
NMDA receptor, MK-801, schizophrenia, cognitive flexibility, working memory, perseveration, glutamatergic neurotransmission, postnatal development, cortical development, cognitive impairment, rat model
MeSH terms
Age Factors, Animals, Animals, Newborn, Behavior, Animal, Cognition Disorders, Discrimination, Psychological, Exploratory Behavior, Locomotion, Male, Memory, Short-Term, Neuropsychological Tests, Psychomotor Performance, Schizophrenia, Receptors, N-Methyl-D-Aspartate, Dizocilpine Maleate, Rats, Sprague-Dawley, Rats

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