Evidence map›Paper›PMID 30165876›Full record

ArticleJournal of neuroinflammation2018

Microglia P2X4 receptor contributes to central sensitization following recurrent nitroglycerin stimulation.

Ting Long, Wei He, Qi Pan, Shanshan Zhang, Yixin Zhang, Chaoyang Liu, Qing Liu, Guangcheng Qin, Lixue Chen, Jiying Zhou

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 54 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
54citing papers in PubMed, 2 pooled it
10.0field-weighted citation impact, top 1% 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

54 citing papers in PubMed, 2 syntheses or guidelines pooled it, 114 citations in OpenAlex.

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  5. Non-neuronal targets for migraine therapy.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2026
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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

10 authors at 1 institution in 1 country.

Ting LongDepartment of Neurology, The First Affiliated Hospital of Chongqing Medical University, 1st Youyi Road, Yuzhong District, Chongqing, 400016, China.
Wei HeDepartment of Neurology, The First Affiliated Hospital of Chongqing Medical University, 1st Youyi Road, Yuzhong District, Chongqing, 400016, China.
Qi PanDepartment of Neurology, The First Affiliated Hospital of Chongqing Medical University, 1st Youyi Road, Yuzhong District, Chongqing, 400016, China.
Shanshan ZhangDepartment of Neurology, The First Affiliated Hospital of Chongqing Medical University, 1st Youyi Road, Yuzhong District, Chongqing, 400016, China.
Yixin ZhangDepartment of Neurology, The First Affiliated Hospital of Chongqing Medical University, 1st Youyi Road, Yuzhong District, Chongqing, 400016, China.
Chaoyang LiuDepartment of Neurology, The First Affiliated Hospital of Chongqing Medical University, 1st Youyi Road, Yuzhong District, Chongqing, 400016, China.
Qing LiuDepartment of Neurology, The First Affiliated Hospital of Chongqing Medical University, 1st Youyi Road, Yuzhong District, Chongqing, 400016, China.
Guangcheng QinLaboratory Research Center, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China.
Lixue ChenLaboratory Research Center, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China.
Jiying ZhouDepartment of Neurology, The First Affiliated Hospital of Chongqing Medical University, 1st Youyi Road, Yuzhong District, Chongqing, 400016, China. zheadache@163.com.ORCID http://orcid.org/0000-0003-3923-4683
The Affiliated Yongchuan Hospital of Chongqing Medical University · CN

Funding

National Natural Science Foundation of China NO.81671092
6 · The paper itself

Abstract

backgroundThe mechanism underlying migraine chronification remains unclear. Central sensitization may account for this progression. The microglia P2X4 receptor (P2X4R) plays a pivotal role in the central sensitization of inflammatory and neuropathic pain, but there is no information about P2X4R in migraine. Therefore, the aim of this study was to identify the precise role of microglia P2X4R in chronic migraine (CM).

methodsWe used an animal model with recurrent intermittent administration of nitroglycerin (NTG), which closely mimics CM. NTG-induced basal and acute mechanical hypersensitivity were evaluated using the von Frey filament test. Then, we detected Iba1 immunoreactivity (Iba1-IR) and P2X4R expression in the trigeminal nucleus caudalis (TNC). To understand the effect of microglia and P2X4R on central sensitization of CM, we examined whether minocycline, an inhibitor of microglia activation, and 5-BDBD, a P2X4R antagonist, altered NTG-induced mechanical hyperalgesia. In addition, we also evaluated the effect of 5-BDBD on c-Fos and calcitonin gene-related peptide (CGRP) expression within the TNC.

resultsChronic intermittent administration of NTG resulted in acute and chronic basal mechanical hyperalgesia, accompanied with microglia activation and upregulation of P2X4R expression. Minocycline significantly decreased basal pain hypersensitivity but did not alter acute NTG-induced hyperalgesia. Minocycline also reduced microglia activation. 5-BDBD completely blocked the basal and acute hyperalgesia induced by NTG. This effect was associated with a significant inhibition of the NTG-induced increase in c-Fos protein and CGRP release in the TNC.

conclusionsOur results indicate that blocking microglia activation may have an effect on the prevention of migraine chronification. Moreover, we speculate that the P2X4R may be implicated in the microglia-neuronal signal in the TNC, which contributes to the central sensitization of CM.

Indexed as

NitroglycerinAnimalsBenzodiazepinonesCalcitonin Gene-Related PeptideCalcium-Binding ProteinsDisease Models, AnimalGene Expression RegulationHyperalgesiaMaleMiceMice, Inbred C57BLMicrofilament ProteinsMicrogliaMigraine DisordersMinocyclinePain Threshold5-(3-bromophenyl)-1,3-dihydro-2H-benzofuro(3,2-e)-1,4-diazepin-2-oneAif1 protein, mouseBenzodiazepinonesCalcitonin Gene-Related PeptideCalcium-Binding ProteinsMicrofilament ProteinsMinocyclineNitroglycerinProto-Oncogene Proteins c-fosPurinergic P2X Receptor AntagonistsReceptors, Purinergic P2X4Animal modelMicrogliaMigraineNitroglycerinP2X4R

Identifiers

PMID30165876
PMCPMC6117935
OpenAlexW2889177202

What OpenQuestion holds

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LicenceCC BY
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.