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The NMDA Antagonist Model for Schizophrenia: Promise and Pitfalls
Abstract
Drug models have been extensively used to study the pathophysiology of schizophrenia. While they provide good insight into the neurobiology of this disorder, they have several shortcomings, which if known, help in the interpretation of results. In this paper we will discuss these shortcomings in general, and in relation to the N-methyl D-aspartate antagonist model for schizophrenia. This model has recently received a great deal of attention since both phencyclidine and the structurally related drug ketamine, produce symptoms that extend beyond psychosis per se to include other symptoms associated with schizophrenia. In fact, subanesthetic doses of ketamine in healthy individuals produce not only paranoia and perceptual alterations but also thought disorder, negative symptoms, cognitive deficits, as well as impairment on a number of electrophysiologic tests known to be abnormal in schizophrenia. These effects of ketamine will be discussed with a particular emphasis on implications for the pathophysiology and therapeutics of this disorder.
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“it has long been known that antagonism of NMDA receptors at glutamatergic synapses can induce a schizophrenia-like psychosis that includes some of those deficits.42”
From De novo CNV analysis implicates specific abnormalities of postsynaptic signalling complexes in the pathogenesis of schizophrenia (2012) · cites this paper as [42]
In the citing paper
“This has led to a glutamate hypofunction hypothesis of schizophrenia.”
From De novo CNV analysis implicates specific abnormalities of postsynaptic signalling complexes in the pathogenesis of schizophrenia (2012) · cites this paper as [42]
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Metadata
- Authors
- Abi-Saab, W., D'Souza, D., Moghaddam, B., & Krystal, J.
- Affiliations
- Yale University (US)
- Venue
- Pharmacopsychiatry
- Publisher
- Georg Thieme Verlag KG
- Published
- 1998-07
- Volume
- 31
- Issue
- S 2
- Pages
- 104-109
- ISSN
- 0176-3679 (ISSN-L)
- 1439-0795
- OpenAlex
- W2066794669
- Cited by
- 208
- References
- 0
- Citations by year
- 2026: 3 · 2025: 1 · 2024: 4 · 2023: 3 · 2022: 5 · 2021: 6 · 2020: 9 · 2019: 2 · 2018: 4 · 2017: 8 · 2016: 4 · 2015: 7 · 2014: 10 · 2013: 7 · 2012: 7
- FWCI
- 3.74
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Pharmacopsychiatry (publishedVersion)
- PubMed (publishedVersion)
- Funders
- U.S. Department of Veterans Affairs
- National Alliance for Research on Schizophrenia and Depression
- National Institutes of Health
- National Institute of Mental Health (MH 44866, P50MH044866)
- Topics
- Health Sciences › Medicine › Psychiatry and Mental health › Schizophrenia research and treatment
- Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
- Health Sciences › Medicine › Pharmacology (medical) › Treatment of Major Depression
- Keywords
- schizophrenia, ketamine, phencyclidine, drug-induced psychosis, thought disorder, negative symptoms, cognitive impairment, schizophrenia pathophysiology
- MeSH terms
- Anesthetics, Dissociative, Humans, Ketamine, Schizophrenia, Receptors, N-Methyl-D-Aspartate, Excitatory Amino Acid Antagonists
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