Evidence map›Paper›PMID 26063927›Full record

ArticleThe Journal of neuroscience : the official journal of the Society for Neuroscience2015

The role of G-protein receptor 84 in experimental neuropathic pain.

Louise S C Nicol, John M Dawes, Federica La Russa, Athanasios Didangelos, Anna K Clark, Clive Gentry, John Grist, John B Davies, Marzia Malcangio, Stephen B McMahon

Open access · hybridAbstract read
In one paragraph

Article in The Journal of neuroscience : the official journal of the Society for Neuroscience, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 40 papers.

0numbers the graph read from it
0cells of the map it votes in
40citing papers in PubMed
3.6field-weighted citation impact, top 7% 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

40 citing papers in PubMed, 66 citations in OpenAlex.

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  10. Emerging role of macrophages in neuropathic pain.Journal of orthopaedic translation · 2025
    Review
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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 3 institutions in 1 country.

Louise S C NicolWolfson Centre for Age-Related Disease, King's College London, London, SE1 1UL, United Kingdom.
John M DawesNuffield Department of Clinical Neurosciences, University of Oxford, John Radcliffe Hospital, Oxford, OX3 9DU, United Kingdom, and.
Federica La RussaWolfson Centre for Age-Related Disease, King's College London, London, SE1 1UL, United Kingdom.
Athanasios DidangelosWolfson Centre for Age-Related Disease, King's College London, London, SE1 1UL, United Kingdom.
Anna K ClarkWolfson Centre for Age-Related Disease, King's College London, London, SE1 1UL, United Kingdom.ORCID http://orcid.org/0000-0001-7023-066X
Clive GentryWolfson Centre for Age-Related Disease, King's College London, London, SE1 1UL, United Kingdom.
John GristWolfson Centre for Age-Related Disease, King's College London, London, SE1 1UL, United Kingdom.
John B DaviesGlaxoSmithKline, Harlow, CM19 5AW, United Kingdom.
Marzia MalcangioWolfson Centre for Age-Related Disease, King's College London, London, SE1 1UL, United Kingdom.
Stephen B McMahonWolfson Centre for Age-Related Disease, King's College London, London, SE1 1UL, United Kingdom, stephen.mcmahon@kcl.ac.uk.ORCID http://orcid.org/0000-0003-4656-5536
GlaxoSmithKline (United Kingdom) · GBJohn Radcliffe Hospital · GBKing's College London · GB

Funding

Biotechnology and Biological Sciences Research CouncilWellcome Trust 097903Wellcome Trust 102645
6 · The paper itself

Abstract

G-protein receptor 84 (GPR84) is an orphan receptor that is induced markedly in monocytes/macrophages and microglia during inflammation, but its pathophysiological function is unknown. Here, we investigate the role of GPR84 in a murine model of traumatic nerve injury. Naive GPR84 knock-out (KO) mice exhibited normal behavioral responses to acute noxious stimuli, but subsequent to partial sciatic nerve ligation (PNL), KOs did not develop mechanical or thermal hypersensitivity, in contrast to wild-type (WT) littermates. Nerve injury increased ionized calcium binding adapter molecule 1 (Iba1) and phosphorylated p38 MAPK immunoreactivity in the dorsal horn and Iba1 and cluster of differentiation 45 expression in the sciatic nerve, with no difference between genotypes. PCR array analysis revealed that Gpr84 expression was upregulated in the spinal cord and sciatic nerve of WT mice. In addition, the expression of arginase-1, a marker for anti-inflammatory macrophages, was upregulated in KO sciatic nerve. Based on this evidence, we investigated whether peripheral macrophages behave differently in the absence of GPR84. We found that lipopolysaccharide-stimulated KO macrophages exhibited attenuated expression of several proinflammatory mediators, including IL-1β, IL-6, and TNF-α. Forskolin-stimulated KO macrophages also showed greater cAMP induction, a second messenger associated with immunosuppression. In summary, our results demonstrate that GPR84 is a proinflammatory receptor that contributes to nociceptive signaling via the modulation of macrophages, whereas in its absence the response of these cells to an inflammatory insult is impaired.

Indexed as

AnimalsCalcium-Binding ProteinsCells, CulturedCyclic AMPCytokinesDisease Models, AnimalGene Expression RegulationHypersensitivityInflammationLipopolysaccharidesMacrophagesMiceMice, KnockoutMicrofilament ProteinsMicrogliap38 Mitogen-Activated Protein KinasesAif1 protein, mouseCalcium-Binding ProteinsCyclic AMPCytokinesGpr84 protein, mouseLipopolysaccharidesMicrofilament Proteinsp38 Mitogen-Activated Protein KinasesReceptors, G-Protein-CoupledcytokineG-protein linked receptorsinflammationmacrophagemicroglianeuropathic pain

Identifiers

PMID26063927
PMCPMC4461694
OpenAlexW1573313032

What OpenQuestion holds

Textmetadata
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.