Evidence map›Paper›PMID 31779652›Full record

ArticleJournal of neuroinflammation2019

The glucagon-like peptide-1 receptor agonist reduces inflammation and blood-brain barrier breakdown in an astrocyte-dependent manner in experimental stroke.

Yilong Shan, Sha Tan, Yinyao Lin, Siyuan Liao, Bingjun Zhang, Xiaodong Chen, Jihui Wang, Zhezhi Deng, Qin Zeng, Lei Zhang and 5 more

Open access · goldAbstract read
In one paragraph

Article in Journal of neuroinflammation, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 105 papers.

0numbers the graph read from it
0cells of the map it votes in
105citing papers in PubMed
7.3field-weighted citation impact, top 2% 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

105 citing papers in PubMed, 179 citations in OpenAlex.

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45 more citing papers are in PubMed but not listed here.

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

15 authors at 2 institutions in 1 country.

Yilong ShanDepartment of Rehabilitation Medicine, The Third Affiliated Hospital of Sun Yat-sen University, No. 600 Tianhe Road, Guangzhou City, China.
Sha TanDepartment of Neurology, The Third Affiliated Hospital of Sun Yat-sen University, No. 600 Tianhe Road, Guangzhou City, China.
Yinyao LinDepartment of Neurology, The Third Affiliated Hospital of Sun Yat-sen University, No. 600 Tianhe Road, Guangzhou City, China.
Siyuan LiaoDepartment of Neurology, The Third Affiliated Hospital of Sun Yat-sen University, No. 600 Tianhe Road, Guangzhou City, China.
Bingjun ZhangDepartment of Neurology, The Third Affiliated Hospital of Sun Yat-sen University, No. 600 Tianhe Road, Guangzhou City, China.
Xiaodong ChenDepartment of Neurology, The Third Affiliated Hospital of Sun Yat-sen University, No. 600 Tianhe Road, Guangzhou City, China.
Jihui WangDepartment of Psychiatry, The Third Affiliated Hospital of Sun Yat-sen University, No. 600 Tianhe Road, Guangzhou City, China.
Zhezhi DengDepartment of Psychiatry, The Third Affiliated Hospital of Sun Yat-sen University, No. 600 Tianhe Road, Guangzhou City, China.
Qin ZengDepartment of Neurology, The Third Affiliated Hospital of Sun Yat-sen University, No. 600 Tianhe Road, Guangzhou City, China.
Lei ZhangDepartment of Neurology, The Fifth Affiliated Hospital of Sun Yat-sen University, No. 52 Meihuadong Road, Zhuhai City, China.
Yuge WangDepartment of Neurology, The Third Affiliated Hospital of Sun Yat-sen University, No. 600 Tianhe Road, Guangzhou City, China.
Xueqiang HuDepartment of Neurology, The Third Affiliated Hospital of Sun Yat-sen University, No. 600 Tianhe Road, Guangzhou City, China.
Wei QiuDepartment of Neurology, The Third Affiliated Hospital of Sun Yat-sen University, No. 600 Tianhe Road, Guangzhou City, China.
Lisheng PengDepartment of Neurology, The Third Affiliated Hospital of Sun Yat-sen University, No. 600 Tianhe Road, Guangzhou City, China.
Zhengqi LuDepartment of Neurology, The Third Affiliated Hospital of Sun Yat-sen University, No. 600 Tianhe Road, Guangzhou City, China. lzq1828@163.com.
Third Affiliated Hospital of Sun Yat-sen University · CNSun Yat-sen University · CN

Funding

National Natural Science Foundation of China 81671178Natural Science Foundation of Guangdong Province 2017A030311013
6 · The paper itself

Abstract

backgroundPreserving the integrity of the blood-brain barrier (BBB) is beneficial to avoid further brain damage after acute ischemic stroke (AIS). Astrocytes, an important component of the BBB, promote BBB breakdown in subjects with AIS by secreting inflammatory factors. The glucagon-like peptide-1 receptor (GLP-1R) agonist exendin-4 (Ex-4) protects the BBB and reduces brain inflammation from cerebral ischemia, and GLP-1R is expressed on astrocytes. However, the effect of Ex-4 on astrocytes in subjects with AIS remains unclear.

methodsIn the present study, we investigated the effect of Ex-4 on astrocytes cultured under oxygen-glucose deprivation (OGD) plus reoxygenation conditions and determined whether the effect influences bEnd.3 cells. We used various methods, including permeability assays, western blotting, immunofluorescence staining, and gelatin zymography, in vitro and in vivo.

resultsEx-4 reduced OGD-induced astrocyte-derived vascular endothelial growth factor (VEGF-A), matrix metalloproteinase-9 (MMP-9), chemokine monocyte chemoattractant protein-1 (MCP-1), and chemokine C-X-C motif ligand 1 (CXCL-1). The reduction in astrocyte-derived VEGF-A and MMP-9 was related to the increased expression of tight junction proteins (TJPs) in bEnd.3 cells. Ex-4 improved neurologic deficit scores, reduced the infarct area, and ameliorated BBB breakdown as well as decreased astrocyte-derived VEGF-A, MMP-9, CXCL-1, and MCP-1 levels in ischemic brain tissues from rats subjected to middle cerebral artery occlusion. Ex-4 reduced the activation of the JAK2/STAT3 signaling pathway in astrocytes following OGD.

conclusionBased on these findings, ischemia-induced inflammation and BBB breakdown can be improved by Ex-4 through an astrocyte-dependent manner.

Indexed as

Glucagon-Like Peptide-1 Receptor AgonistsAnimalsAstrocytesBlood-Brain BarrierChemokine CCL2Chemokine CXCL1ExenatideInfarction, Middle Cerebral ArteryInflammationMaleMatrix Metalloproteinase 9RatsRats, Sprague-DawleyStrokeVascular Endothelial Growth Factor AChemokine CCL2Chemokine CXCL1ExenatideGlucagon-Like Peptide-1 Receptor AgonistsMatrix Metalloproteinase 9Vascular Endothelial Growth Factor AAstrocyteBlood-brain barrierExendin-4Ischemic strokeOxygen-glucose deprivation

Identifiers

PMID31779652
PMCPMC6883580
OpenAlexW2993239729

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.