Evidence map›Paper›PMID 25420607›Full record

ArticlePsychopharmacology2015

Sigma 1 receptor activation regulates brain-derived neurotrophic factor through NR2A-CaMKIV-TORC1 pathway to rescue the impairment of learning and memory induced by brain ischaemia/reperfusion.

Qian Xu, Xue-Fei Ji, Tian-Yan Chi, Peng Liu, Ge Jin, Shao-Li Gu, Li-Bo Zou

Abstract read
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In one paragraph

Article in Psychopharmacology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed, 2 pooled it
3.0field-weighted citation impact, top 8% 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

30 citing papers in PubMed, 2 syntheses or guidelines pooled it, 71 citations in OpenAlex.

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  14. Nutrients · 2021
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  16. PTSD as an Endothelial Disease: Insights From COVID-19.Frontiers in cellular neuroscience · 2021
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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

7 authors at 1 institution in 1 country.

Qian XuDepartment of Pharmacology, School of Life Science and Biopharmaceutics, Shenyang Pharmaceutical University, Shenyang, 110016, People's Republic of China.
Xue-Fei Ji
Tian-Yan Chi
Peng Liu
Ge Jin
Shao-Li Gu
Li-Bo Zou
Shenyang Pharmaceutical University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

rationaleSigma-1 receptor (Sig-1R) agonists showed anti-amnesic properties in Alzheimer's disease models and anti-inflammatory properties in cerebrum ischaemia models. The agonist of Sig-1R was reported to up-regulate brain-derived neurotrophic factor (BDNF) levels in the hippocampus of mice. Here, we investigate whether the activation of Sig-1R attenuates the learning and memory impairment induced by ischaemia/reperfusion and how it affects the expression of BDNF.

objectivesBilateral common carotid artery occlusion (BCCAO) was induced for 20 min in C57BL/6 mice. MATERIALS AND

methodsSig-1R agonist, PRE084, sigma 1/2 non-selective agonist, DTG, Sig-1R antagonist and BD1047 were injected once daily throughout the experiment. Behavioural tests were performed from day 8. On day 22 after BCCAO, mice were sacrificed for biochemical analysis.

resultsPRE084 and DTG ameliorated learning and memory impairments in the Y maze, novel object recognition, and water maze tasks and prevented the decline of synaptic proteins and BDNF expression in the hippocampus of BCCAO mice. Furthermore, PRE084 and DTG up-regulated the level of NMDA receptor 2A (NR2A), calcium/calmodulin-dependent protein kinase type IV (CaMKIV) and CREB-specific co-activator transducer of regulated CREB activity 1 (TORC1). Additionally, the effects of PRE084 and DTG were antagonised by the co-administration of BD1047.

conclusionsSig-1R activation showed an attenuation in the ischaemia/reperfusion model and the activation of Sig-1R increased the expression of BDNF, possibly through the NR2A-CaMKIV-TORC1 pathway, and Sig-1R agonists might function as neuroprotectant agents in vascular dementia.

Indexed as

AnimalsBrain-Derived Neurotrophic FactorBrain IschemiaCalcium-Calmodulin-Dependent Protein Kinase Type 4FemaleMaleMechanistic Target of Rapamycin Complex 1MemoryMiceMice, Inbred C57BLMorpholinesMultiprotein ComplexesReceptors, N-Methyl-D-AspartateReceptors, sigmaReperfusion InjurySigma-1 Receptor2-(4-morpholino)ethyl-1-phenylcyclohexane-1-carboxylateBrain-Derived Neurotrophic FactorCalcium-Calmodulin-Dependent Protein Kinase Type 4Camk4 protein, mouseMechanistic Target of Rapamycin Complex 1MorpholinesMultiprotein ComplexesReceptors, N-Methyl-D-AspartateReceptors, sigmaSigma-1 ReceptorTOR Serine-Threonine Kinases

Identifiers

PMID25420607
OpenAlexW2016776110

What OpenQuestion holds

Textmetadata
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.