Evidence map›Paper›PMID 29976213›Full record

ArticleJournal of neuroinflammation2018

Astrocytic gap junction inhibition by carbenoxolone enhances the protective effects of ischemic preconditioning following cerebral ischemia.

Di Ma, Liangshu Feng, Yingying Cheng, Meiying Xin, Jiulin You, Xiang Yin, Yulei Hao, Li Cui, Jiachun Feng

Open access · goldAbstract read
In one paragraph

Article in Journal of neuroinflammation, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed
1.9field-weighted citation impact, top 13% 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

27 citing papers in PubMed, 46 citations in OpenAlex.

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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

9 authors at 2 institutions in 1 country.

Di MaDepartment of Neurology and Neuroscience center, The First Hospital of Jilin University, Changchun 130021, Jilin Province, People's Republic of China.
Liangshu FengDepartment of Neurology and Neuroscience center, The First Hospital of Jilin University, Changchun 130021, Jilin Province, People's Republic of China.
Yingying ChengDepartment of Neurology and Neuroscience center, The First Hospital of Jilin University, Changchun 130021, Jilin Province, People's Republic of China.
Meiying XinDepartment of Neurology and Neuroscience center, The First Hospital of Jilin University, Changchun 130021, Jilin Province, People's Republic of China.
Jiulin YouDepartment of Neurology and Neuroscience center, The First Hospital of Jilin University, Changchun 130021, Jilin Province, People's Republic of China.
Xiang YinDepartment of Neurology and Neuroscience center, The First Hospital of Jilin University, Changchun 130021, Jilin Province, People's Republic of China.
Yulei HaoDepartment of Neurology and Neuroscience center, The First Hospital of Jilin University, Changchun 130021, Jilin Province, People's Republic of China.
Li CuiDepartment of Neurology and Neuroscience center, The First Hospital of Jilin University, Changchun 130021, Jilin Province, People's Republic of China.
Jiachun FengDepartment of Neurology and Neuroscience center, The First Hospital of Jilin University, Changchun 130021, Jilin Province, People's Republic of China. fengjcfrank2017@163.com.
First Hospital of Jilin University · CNJilin University · CN

Funding

National Natural Science Foundation of China 81400942National Natural Science Foundation of China 81701158National Natural Science Foundation of China 81771257
6 · The paper itself

Abstract

backgroundStroke is the second leading cause of death worldwide and the most common cause of adult-acquired disability in many nations. Thus, attenuating the damage after ischemic injury and improving patient prognosis are of great importance. We have indicated that ischemic preconditioning (IP) can effectively reduce the damage of ischemia reperfusion and that inhibition of gap junctions may further reduce this damage. Although we confirmed that the function of gap junctions is closely associated with glutamate, we did not investigate the mechanism. In the present study, we aimed to clarify whether the blockade of cellular communication at gap junctions leads to significant reductions in the levels of glutamate released by astrocytes following cerebral ischemia.

methodsTo explore this hypothesis, we utilized the specific blocking agent carbenoxolone (CBX) to inhibit the opening and internalization of connexin 43 channels in an in vitro model of oxygen-glucose deprivation/re-oxygenation (OGD/R), following IP.

resultsOGD/R resulted in extensive astrocytic glutamate release following upregulation of hemichannel activity, thus increasing reactive oxygen species (ROS) generation and subsequent cell death. However, we observed significant increases in neuronal survival in neuron-astrocyte co-cultures that were subjected to IP prior to OGD/R. Moreover, the addition of CBX enhanced the protective effects of IP during the re-oxygenation period following OGD, by means of blocking the release of glutamate, increasing the level of the excitatory amino acid transporter 1, and downregulating glutamine expression.

conclusionsOur results suggest that combined use of IP and CBX represents a novel therapeutic strategy to attenuate damage from cerebral ischemia with minimal adverse side effects.

Indexed as

Amino Acid Transport System X-AGAnimalsAnimals, NewbornCarbenoxoloneCD11b AntigenCells, CulturedCerebral CortexCoculture TechniquesEmbryo, MammalianGap JunctionsGene Expression RegulationGlial Fibrillary Acidic ProteinInterleukin-1betaNeurogliaNeuronsNeuroprotective AgentsAmino Acid Transport System X-AGCarbenoxoloneCD11b AntigenGlial Fibrillary Acidic ProteinInterleukin-1betaNeuroprotective AgentsNitric OxideOxygenReactive Oxygen SpeciesTumor Necrosis Factor-alphaAstrocyteCarbenoxoloneCerebral ischemic preconditioningConnexin 43Gap junctionGlutamateInflammationIschemia reperfusionOxygen-glucose deprivationReactive oxygen species

Identifiers

PMID29976213
PMCPMC6034345
OpenAlexW2880337288

What Socratic 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 Socratic graph.