Evidence map›Paper›PMID 19885653›Full record

ArticleExperimental brain research2010

Postnatal exposure to MK801 induces selective changes in GAD67 or parvalbumin.

Christopher Paul Turner, Danielle DeBenedetto, Emily Ware, Robert Stowe, Andrew Lee, John Swanson, Caroline Walburg, Alexandra Lambert, Melissa Lyle, Priyanka Desai and 1 more

Abstract read
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In one paragraph

Article in Experimental brain research, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed, 1 pooled it
–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

17 citing papers in PubMed, 1 synthesis or guideline pooled it.

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  16. Postnatal expression of GAD67.Neurochemical research · 2010
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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

11 authors.

Christopher Paul TurnerNeurobiology and Anatomy, Wake Forest University School of Medicine, 1 Medical Center Blvd, Winston-Salem, NC 27157-1010, USA. cpturner@wfubmc.edu
Danielle DeBenedetto
Emily Ware
Robert Stowe
Andrew Lee
John Swanson
Caroline Walburg
Alexandra Lambert
Melissa Lyle
Priyanka Desai
Chun Liu

Funding

Calcium Homeostasis and Neonatal Brain InjuryR01NS051632 · NINDS · WAKE FOREST UNIVERSITY HEALTH SCIENCES · PI TURNER, CHRISTOPHER P · 2006 to 2009
$1.1M
NINDS NIH HHS R01 NS051632
6 · The paper itself

Abstract

Brain injury during the last trimester to the first 1-4 years in humans is now thought to trigger an array of intellectual and emotional problems later in life, including disorders such as schizophrenia. In adult schizophrenic brains, there is a specific loss of neurons that co-express glutamic acid decarboxylase-parvalbumin (GAD67-PV). Loss of this phenotype is thought to occur in mature animals previously exposed to N-methyl-D: -aspartate receptor (NMDAR) antagonists during late gestation or at postnatal day 7 (P7). However, in similarly treated animals, we have previously shown that GAD67 and PV are unaltered in the first 24 h. To more precisely define when changes in these markers first occur, we exposed rat pups (P7 or P6-P10) to the NMDAR antagonist MK801 and at P11 co-stained brain sections for GAD67 or PV. In the cingulate cortex, we found evidence for a reduction in PV (GAD67 levels were very low to undetectable). In contrast, in the somatosensory cortex, we found that expression of GAD67 was reduced, but PV remained stable. Further, repeated but not single doses of MK801 were necessary to see such changes. Thus, depending on the region, NMDAR antagonism appears to influence expression of PV or GAD67, but not both. These observations could not have been predicted by previous studies and raise important questions as to how the GAD67-PV phenotype is lost once animals reach maturity. More importantly, such differential effects may be of great clinical importance, given that cognitive deficits are seen in children exposed to anesthetics that act by blocking the NMDAR.

Indexed as

AgingAnimalsAnimals, NewbornCell CountCell DifferentiationDisease Models, AnimalDizocilpine MaleateExcitatory Amino Acid Antagonistsgamma-Aminobutyric AcidGlutamate DecarboxylaseGyrus CinguliImmunohistochemistryInterneuronsNerve DegenerationParvalbuminsPhenotypeDizocilpine MaleateExcitatory Amino Acid Antagonistsgamma-Aminobutyric AcidGlutamate Decarboxylaseglutamate decarboxylase 1ParvalbuminsReceptors, N-Methyl-D-Aspartate

Identifiers

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Read underepoch 390

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.