Evidence map›Paper›PMID 28628228›Full record

ArticleJournal of neurochemistry2017

Epigenetic mechanisms underlying NMDA receptor hypofunction in the prefrontal cortex of juvenile animals in the MAM model for schizophrenia.

Yelena Gulchina, Song-Jun Xu, Melissa A Snyder, Felice Elefant, Wen-Jun Gao

Open access · bronzeAbstract read
In one paragraph

Article in Journal of neurochemistry, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers.

0numbers the graph read from it
0cells of the map it votes in
35citing papers in PubMed
2.6field-weighted citation impact, top 10% 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

35 citing papers in PubMed, 56 citations in OpenAlex.

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  18. Frontiers in synaptic neuroscience · 2022
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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

5 authors at 1 institution in 1 country.

Yelena GulchinaDepartment of Neurobiology and Anatomy, Drexel University College of Medicine, Philadelphia, Pennsylvania, USA.
Song-Jun XuDepartment of Biology, Drexel University, Philadelphia, Pennsylvania, USA.
Melissa A SnyderDepartment of Neurobiology and Anatomy, Drexel University College of Medicine, Philadelphia, Pennsylvania, USA.
Felice ElefantDepartment of Biology, Drexel University, Philadelphia, Pennsylvania, USA.
Wen-Jun GaoDepartment of Neurobiology and Anatomy, Drexel University College of Medicine, Philadelphia, Pennsylvania, USA.ORCID 0000-0002-8585-3082
Drexel University · US

Funding

Development of NMDAR hypofunction and cognitive deficitsR01MH085666 · NIMH · DREXEL UNIVERSITY · PI GAO, WEN-JUN · 2009 to 2018
$3.8M
NIMH NIH HHS R01 MH085666
6 · The paper itself

Abstract

Schizophrenia (SCZ) is characterized not only by psychosis, but also by working memory and executive functioning deficiencies, processes that rely on the prefrontal cortex (PFC). Because these cognitive impairments emerge prior to psychosis onset, we investigated synaptic function during development in the neurodevelopmental methylazoxymethanol (MAM) model for SCZ. Specifically, we hypothesize that N-methyl-D-aspartate receptor (NMDAR) hypofunction is attributable to reductions in the NR2B subunit through aberrant epigenetic regulation of gene expression, resulting in deficient synaptic physiology and PFC-dependent cognitive dysfunction, a hallmark of SCZ. Using western blot and whole-cell patch-clamp electrophysiology, we found that the levels of synaptic NR2B protein are significantly decreased in juvenile MAM animals, and the function of NMDARs is substantially compromised. Both NMDA-mEPSCs and synaptic NMDA-eEPSCs are significantly reduced in prelimbic PFC (plPFC). This protein loss during the juvenile period is correlated with an aberrant increase in enrichment of the epigenetic transcriptional repressor RE1-silencing transcription factor (REST) and the repressive histone marker H3K27me3 at the Grin2b promoter, as assayed by ChIP-quantitative polymerase chain reaction. Glutamate hypofunction has been a prominent hypothesis in the understanding of SCZ pathology; however, little attention has been given to the NMDAR system in the developing PFC in models for SCZ. Our work is the first to confirm that NMDAR hypofunction is a feature of early postnatal development, with epigenetic hyper-repression of the Grin2b promoter being a contributing factor. The selective loss of NR2B protein and subsequent synaptic dysfunction weakens plPFC function during development and may underlie early cognitive impairments in SCZ models and patients. Read the Editorial Highlight for this article on page 264.

Indexed as

alpha-Amino-3-hydroxy-5-methyl-4-isoxazolepropionic AcidAnimalsAnimals, NewbornCognition DisordersDisease Models, AnimalEpigenesis, GeneticExcitatory Amino Acid AgonistsExcitatory Postsynaptic PotentialsFemaleGene Expression Regulation, DevelopmentalIn Vitro TechniquesMaleMethylazoxymethanol AcetateNeuronsN-MethylaspartatePatch-Clamp Techniquesalpha-Amino-3-hydroxy-5-methyl-4-isoxazolepropionic AcidExcitatory Amino Acid AgonistsmethylazoxymethanolMethylazoxymethanol AcetateN-MethylaspartateReceptors, N-Methyl-D-Aspartateanimal modelChIPhistone modification H3K27me3juvenileNMDA receptorsrepressor protein REST/NRSFschizophrenia

Identifiers

PMID28628228
PMCPMC5653427
OpenAlexW2698520775

What OpenQuestion holds

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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.