Evidence map›Paper›PMID 21484239›Full record

ArticlePsychopharmacology2011

A comparison of the effects of ketamine and phencyclidine with other antagonists of the NMDA receptor in rodent assays of attention and working memory.

Janice W Smith, Francois Gastambide, Gary Gilmour, Sophie Dix, Julie Foss, Kirstie Lloyd, Nadia Malik, Mark Tricklebank

Abstract readComparative Study
PubMed Publisher
In one paragraph

Article in Psychopharmacology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 49 papers.

0numbers the graph read from it
0cells of the map it votes in
49citing papers in PubMed
11.1field-weighted citation impact, top 1% 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

49 citing papers in PubMed, 107 citations in OpenAlex.

  1. Trial
  2. Article
  3. GluN2A: A Promising Target for Developing Novel Antidepressants.The international journal of neuropsychopharmacology · 2024
    Review
  4. Article
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  11. Blockage of NMDA- and GABA(A) Receptors Improves Working Memory Selectivity of Primate Prefrontal Neurons.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2020
    Article
  12. Article
  13. Review
  14. Operant Assessment of DMTP Spatial Working Memory in Mice.Frontiers in behavioral neuroscience · 2019
    Article
  15. Article
  16. Article
  17. Review
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  19. Article
  20. NR2A-Containing NMDARs in the Prefrontal Cortex Are Required for Working Memory and Associated with Age-Related Cognitive Decline.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2016
    Article
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

8 authors at 2 institutions in 2 countries.

Janice W SmithLilly Centre for Cognitive Neuroscience, Lilly Research Laboratories, Eli Lilly & Co. Ltd., Erl Wood Manor, Sunninghill Road, Windlesham, Surrey, GU20 6PH, UK.
Francois Gastambide
Gary Gilmour
Sophie Dix
Julie Foss
Kirstie Lloyd
Nadia Malik
Mark Tricklebank
Eli Lilly (United Kingdom) · GBEli Lilly (United States) · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

rationaleN-methyl-D: -Aspartate receptor (NMDAR) antagonists such as ketamine induce cognitive symptoms in man similar to those of schizophrenia and therefore might be useful as models of the disease in animals. However, it is unclear which NMDAR antagonist(s) offer the best means to produce cognitive deficits in attention and working memory and to what extent those deficits can be measured selectively in rats.

objectivesThe present study systematically compared the effects of eight different NMDAR antagonists-MK-801, phencyclidine, (S)-(+)-ketamine, memantine, SDZ-220,581, Ro 25-6981, CP 101-606 and NVP-AAM077-in rats using standard tests of visual attention, the five-choice serial reaction time task (5CSRT), and working memory, the delayed matching to position task (DMTP).

resultsDrug-induced responses varied qualitatively and quantitatively in both a compound- and a task-dependent manner. Effects were generally confounded by concomitant motor and motivational disruption, although individual doses of phencyclidine for example appeared to impair selectively cognitive functions. Interestingly, GluN2B selective antagonists were unique in their effects; inducing potential performance benefit in the 5CSRT.

conclusionsOverall, the opportunity to induce a selective cognitive deficit in attention (5CSRT) or working memory (DMTP) in the rat is limited by both the NMDAR antagonist and the dose range used. The importance of a preclinical focus on ketamine, which is used more frequently in clinical settings, is limited by the extent to which cognitive effects can be both detected and quantified using this exposure regimen within these two operant assays.

Indexed as

AnimalsAttentionBehavior, AnimalChoice BehaviorDose-Response Relationship, DrugExcitatory Amino Acid AntagonistsKetamineMaleMemory, Short-TermPhencyclidineRatsRats, Inbred StrainsReaction TimeReceptors, N-Methyl-D-AspartateExcitatory Amino Acid AntagonistsKetaminePhencyclidineReceptors, N-Methyl-D-Aspartate

Identifiers

PMID21484239
OpenAlexW1971612884

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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.