Evidence map›Paper›PMID 25505561›Full record

ArticlePharmacology research & perspectives2013

Effects of D-amino acid oxidase inhibition on memory performance and long-term potentiation in vivo.

Seth C Hopkins, Una C Campbell, Michele L R Heffernan, Kerry L Spear, Ross D Jeggo, David C Spanswick, Mark A Varney, Thomas H Large

Open access · goldAbstract read
In one paragraph

Article in Pharmacology research & perspectives, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
1.3field-weighted citation impact, top 19% 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

19 citing papers in PubMed, 34 citations in OpenAlex.

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  8. Update on the Treatment of Ataxia: Medication and Emerging Therapies.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2020
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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

8 authors at 5 institutions in 4 countries.

Seth C HopkinsSunovion Pharmaceuticals Inc Marlborough, Massachusetts.
Una C CampbellSunovion Pharmaceuticals Inc Marlborough, Massachusetts.
Michele L R HeffernanSunovion Pharmaceuticals Inc Marlborough, Massachusetts.
Kerry L SpearSunovion Pharmaceuticals Inc Marlborough, Massachusetts.
Ross D JeggoNeurosolutions Ltd. Coventry, U.K.
David C SpanswickNeurosolutions Ltd. Coventry, U.K ; Department of Physiology, Monash University Clayton, Victoria, Australia ; Warwick Medical School, University of Warwick Coventry, U.K.
Mark A VarneySunovion Pharmaceuticals Inc Marlborough, Massachusetts.
Thomas H LargeSunovion Pharmaceuticals Inc Marlborough, Massachusetts.
Sunovion (United States) · USSunovion (United Kingdom) · GBHydrosolutions (Switzerland) · CHUniversity of Warwick · GBVion Pharmaceuticals (United States) · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

N-methyl-d-aspartate receptor (NMDAR) activation can initiate changes in synaptic strength, evident as long-term potentiation (LTP), and is a key molecular correlate of memory formation. Inhibition of d-amino acid oxidase (DAAO) may increase NMDAR activity by regulating d-serine concentrations, but which neuronal and behavioral effects are influenced by DAAO inhibition remain elusive. In anesthetized rats, extracellular field excitatory postsynaptic potentials (fEPSPs) were recorded before and after a theta frequency burst stimulation (TBS) of the Schaffer collateral pathway of the CA1 region in the hippocampus. Memory performance was assessed after training with tests of contextual fear conditioning (FC, mice) and novel object recognition (NOR, rats). Oral administration of 3, 10, and 30 mg/kg 4H-furo[3,2-b]pyrrole-5-carboxylic acid (SUN) produced dose-related and steady increases of cerebellum d-serine in rats and mice, indicative of lasting inhibition of central DAAO. SUN administered 2 h prior to training improved contextual fear conditioning in mice and novel object recognition memory in rats when tested 24 h after training. In anesthetized rats, LTP was established proportional to the number of TBS trains. d-cycloserine (DCS) was used to identify a submaximal level of LTP (5× TBS) that responded to NMDA receptor activation; SUN administered at 10 mg/kg 3-4 h prior to testing similarly increased in vivo LTP levels compared to vehicle control animals. Interestingly, in vivo administration of DCS also increased brain d-serine concentrations. These results indicate that DAAO inhibition increased NMDAR-related synaptic plasticity during phases of post training memory consolidation to improve memory performance in hippocampal-dependent behavioral tests.

Indexed as

Cognitiond-amino acid oxidased-cycloserined-SerineLong-term potentiationNMDA Receptors

Identifiers

PMID25505561
PMCPMC4184572
OpenAlexW2117830260

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.