Evidence map›Paper›PMID 34542935›Full record

ArticleNeuropsychopharmacology reports2021

Pharmacologically induced N-methyl-D-aspartate receptor hypofunction impairs goal-directed food seeking in rats.

Takaaki Ozawa, Tatsumi Itokazu, Yukio Ichitani, Kazuo Yamada

Abstract read
In one paragraph

Article in Neuropsychopharmacology reports, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed
–field-weighted citation impact
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

3 citing papers in PubMed.

  1. Article
  2. Article
  3. 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

4 authors.

Takaaki OzawaInstitute of Psychology and Behavioral Neuroscience, University of Tsukuba, Tsukuba, Japan.
Tatsumi ItokazuInstitute of Psychology and Behavioral Neuroscience, University of Tsukuba, Tsukuba, Japan.
Yukio IchitaniInstitute of Psychology and Behavioral Neuroscience, University of Tsukuba, Tsukuba, Japan.
Kazuo YamadaInstitute of Psychology and Behavioral Neuroscience, University of Tsukuba, Tsukuba, Japan.ORCID 0000-0003-2249-2037

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

aimAcute N-methyl-D-aspartate (NMDA) receptor antagonism is an important pharmacological animal model of schizophrenia. In previous studies, schizophrenia patients show impaired goal-directed behavior in an outcome-specific devaluation procedure. In this study, we investigated whether the rat model of the NMDA receptor blockade also showed altered goal-directed behavior in a satiety-induced outcome devaluation paradigm.

methodsIn experiments 1 and 2, we aimed to establish the satiety-induced outcome devaluation test using sucrose and lipid rewards in operant conditioning and free consumption paradigms. In experiment 3, we tested the effect of MK-801 (0.1 mg/kg, i.p.) on outcome-specific devaluation.

resultsExperiments 1 and 2 demonstrated that 1-h ad libitum food consumption is sufficient to induce outcome-specific devaluation in both lever-press and free consumption tests in rats. Experiment 3 showed that the administration of MK-801 impaired satiety-induced devaluation in the lever-press test but not in the subsequent free consumption test.

conclusionsOur results suggest that acute pharmacological NMDA receptor antagonism in rats is a useful animal model for impaired goal-directed behavior in schizophrenia.

Indexed as

GoalsReceptors, N-Methyl-D-AspartateAnimalsConditioning, OperantDizocilpine MaleateHumansRatsRewardDizocilpine MaleateReceptors, N-Methyl-D-AspartatedevaluationMK-801NMDA receptorratsschizophrenia

Identifiers

PMID34542935
PMCPMC8698676

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.