Evidence map›Paper›PMID 27070406›Full record

ArticleTranslational psychiatry2016

Knockout of NMDA-receptors from parvalbumin interneurons sensitizes to schizophrenia-related deficits induced by MK-801.

A M Bygrave, S Masiulis, E Nicholson, M Berkemann, C Barkus, R Sprengel, P J Harrison, D M Kullmann, D M Bannerman, D Kätzel

Open access · goldAbstract read
In one paragraph

Article in Translational psychiatry, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 72 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
72citing papers in PubMed, 1 pooled it
7.0field-weighted citation impact, top 2% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

72 citing papers in PubMed, 1 synthesis or guideline pooled it, 110 citations in OpenAlex.

  1. Pooled it
  2. NMDA receptor ablation in medial prefrontal cortex disrupts value updating and reward history integration.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2026
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  13. Generation of Rare Human NMDA Receptor Variants in Mice.Methods in molecular biology (Clifton, N.J.) · 2024
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  19. Potential Roles for the GluN2D NMDA Receptor Subunit in Schizophrenia.International journal of molecular sciences · 2023
    Review
  20. Article

12 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

10 authors at 5 institutions in 2 countries.

A M BygraveDepartment of Experimental Psychology, University of Oxford, Oxford, UK.
S MasiulisDepartment of Experimental Psychology, University of Oxford, Oxford, UK.
E NicholsonInstitute of Neurology, University College London, London, UK.
M BerkemannDepartment of Experimental Psychology, University of Oxford, Oxford, UK.
C BarkusDepartment of Pharmacology, University of Oxford, Oxford, UK.
R SprengelMax-Planck Institute for Medical Research, Heidelberg, Germany.ORCID http://orcid.org/0000-0003-3370-0970
P J HarrisonDepartment of Psychiatry, University of Oxford, and Oxford Health NHS Foundation Trust, Warneford Hospital, Oxford, UK.
D M KullmannInstitute of Neurology, University College London, London, UK.
D M BannermanDepartment of Experimental Psychology, University of Oxford, Oxford, UK.
D KätzelDepartment of Experimental Psychology, University of Oxford, Oxford, UK.
University of Oxford · GBUniversity College London · GBMax Planck Institute for Medical Research · DEOxford Health NHS Foundation Trust · GBUniversity of Koblenz and Landau · DE

Funding

Medical Research Council G0501424Medical Research Council G0801316Medical Research Council G116/147Medical Research Council MR/L01095X/1
6 · The paper itself

Abstract

It has been suggested that a functional deficit in NMDA-receptors (NMDARs) on parvalbumin (PV)-positive interneurons (PV-NMDARs) is central to the pathophysiology of schizophrenia. Supportive evidence come from examination of genetically modified mice where the obligatory NMDAR-subunit GluN1 (also known as NR1) has been deleted from PV interneurons by Cre-mediated knockout of the corresponding gene Grin1 (Grin1(ΔPV) mice). Notably, such PV-specific GluN1 ablation has been reported to blunt the induction of hyperlocomotion (a surrogate for psychosis) by pharmacological NMDAR blockade with the non-competitive antagonist MK-801. This suggests PV-NMDARs as the site of the psychosis-inducing action of MK-801. In contrast to this hypothesis, we show here that Grin1(ΔPV) mice are not protected against the effects of MK-801, but are in fact sensitized to many of them. Compared with control animals, Grin1(ΔPV)mice injected with MK-801 show increased stereotypy and pronounced catalepsy, which confound the locomotor readout. Furthermore, in Grin1(ΔPV)mice, MK-801 induced medial-prefrontal delta (4 Hz) oscillations, and impaired performance on tests of motor coordination, working memory and sucrose preference, even at lower doses than in wild-type controls. We also found that untreated Grin1(ΔPV)mice are largely normal across a wide range of cognitive functions, including attention, cognitive flexibility and various forms of short-term memory. Taken together these results argue against PV-specific NMDAR hypofunction as a key starting point of schizophrenia pathophysiology, but support a model where NMDAR hypofunction in multiple cell types contribute to the disease.

Indexed as

Dizocilpine MaleateAnimalsBehavior, AnimalDisease Models, AnimalFemaleInterneuronsMaleMiceMice, KnockoutParvalbuminsReceptors, N-Methyl-D-AspartateSchizophreniaDizocilpine MaleateParvalbuminsReceptors, N-Methyl-D-Aspartate

Identifiers

PMID27070406
PMCPMC4872402
OpenAlexW2341498450

What OpenQuestion holds

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LicenceCC BY
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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.