Evidence map›Paper›PMID 20737477›Full record

ArticleGlia2010

Spinal injection of TNF-α-activated astrocytes produces persistent pain symptom mechanical allodynia by releasing monocyte chemoattractant protein-1.

Yong-Jing Gao, Ling Zhang, Ru-Rong Ji

Open access · greenAbstract read
In one paragraph

Article in Glia, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 75 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
75citing papers in PubMed, 3 pooled it
4.3field-weighted citation impact, top 6% 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

75 citing papers in PubMed, 3 syntheses or guidelines pooled it, 118 citations in OpenAlex.

  1. Pooled it
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  16. Neuropathogenesis of HIV and emerging therapeutic targets.Expert opinion on therapeutic targets · 2022
    Review
  17. Article
  18. Article
  19. Lunatic Fringe-GFP Marks Lamina-Specific Astrocytes That Regulate Sensory Processing.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2022
    Article
  20. Review

15 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

3 authors at 2 institutions in 1 country.

Yong-Jing GaoSensory Plasticity Laboratory, Department of Anesthesiology, Brigham and Women's Hospital and Harvard Medical School, Pain Research Center, Boston, Massachusetts 02115, USA. yjing@zeus.bwh.harvard.edu
Ling Zhang
Ru-Rong Ji
Brigham and Women's Hospital · USHarvard University · US

Funding

Neuronal and glial interactions of neuropathic painR01DE017794 · NIDCR · DUKE UNIVERSITY · PI BUCHHEIT, THOMAS · 2006 to 2021
$6.6M
Resolvins, protectins, and chronic pain resolution.R01NS067686 · NINDS · DUKE UNIVERSITY · PI JI, RU-RONG, SERHAN, CHARLES NICHOLAS · 2009 to 2013
$2.8M
Astroglial mechanisms for inflammatory painR01NS054932 · NINDS · BRIGHAM AND WOMEN'S HOSPITAL · PI JI, RU-RONG · 2007 to 2010
$1.4M
NIDCR NIH HHS DE17794NIDCR NIH HHS R01 DE017794NINDS NIH HHS NS54932NINDS NIH HHS NS67686NINDS NIH HHS R01 NS054932NINDS NIH HHS R01 NS067686
6 · The paper itself

Abstract

Accumulating evidence suggests that spinal astrocytes play an important role in the genesis of persistent pain, by increasing the activity of spinal cord nociceptive neurons, i.e., central sensitization. However, direct evidence of whether activation of astrocytes is sufficient to induce chronic pain symptoms is lacking. We investigated whether and how spinal injection of activated astrocytes could produce mechanical allodynia, a cardinal feature of chronic pain, in naïve mice. Spinal (intrathecal) injection of astrocytes, which were prepared from cerebral cortexes of neonatal mice and briefly stimulated by tumor necrosis factor-alpha (TNF-α), induced a substantial decrease in paw withdrawal thresholds, indicating the development of mechanical allodynia. This allodynia was prevented when the astrocyte cultures were pretreated with a peptide inhibitor of c-Jun N-terminal kinase (JNK), D-JNKI-1. Of note a short exposure of astrocytes to TNF-α for 15 min dramatically increased the expression and release of the chemokine monocyte chemoattractant protein-1 (MCP-1), even 3 h after TNF-α withdrawal, in a JNK-dependent manner. In parallel, intrathecal administration of TNF-α induced MCP-1 expression in spinal cord astrocytes. In particular, mechanical allodynia induced by TNF-α-activated astrocytes was reversed by a MCP-1 neutralizing antibody. Finally, pretreatment of astrocytes with MCP-1 siRNA attenuated astrocytes-induced mechanical allodynia. Taken together, our results suggest that activated astrocytes are sufficient to produce persistent pain symptom in naïve mice by releasing MCP-1.

Indexed as

AnimalsAnimals, NewbornAntibodiesAstrocytesCalcium-Binding ProteinsCells, CulturedCerebral CortexChemokine CCL2Disease Models, AnimalEnzyme InhibitorsEnzyme-Linked Immunosorbent AssayGene Expression RegulationGlial Fibrillary Acidic ProteinHyperalgesiaInjections, SpinalMaleAif1 protein, mouseAntibodiesCalcium-Binding ProteinsCcl2 protein, mouseChemokine CCL2Enzyme InhibitorsGlial Fibrillary Acidic ProteinMAP Kinase Kinase 4Microfilament ProteinsReceptors, Tumor Necrosis FactorReceptors, Tumor Necrosis Factor, Type IRNA, Small InterferingTnfrh2 protein, mouseTnfrsf1a protein, mouseTumor Necrosis Factor-alpha

Identifiers

PMID20737477
PMCPMC2951489
OpenAlexW2130347002

What OpenQuestion holds

Textmetadata
LicenceTDM
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.