Evidence map›Paper›PMID 22540262›Full record

ArticleMolecular pain2012

Mitogen activated protein kinase phosphatase-1 prevents the development of tactile sensitivity in a rodent model of neuropathic pain.

Christian Ndong, Russell P Landry, Joyce A DeLeo, Edgar Alfonso Romero-Sandoval

Open access · goldAbstract read
In one paragraph

Article in Molecular pain, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
2.9field-weighted citation impact, top 9% 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

22 citing papers in PubMed, 33 citations in OpenAlex.

  1. Downregulation of dual-specificity phosphatase 1 (DUSP1) in post-mortem brain white matter in progressive multiple sclerosis.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2026
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  5. Dual-Specificity Phosphatase Regulation in Neurons and Glial Cells.International journal of molecular sciences · 2019
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  19. Pathological pain and the neuroimmune interface.Nature reviews. Immunology · 2014
    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

4 authors at 2 institutions in 1 country.

Christian NdongDartmouth Medical School, Department of Anesthesiology, Lebanon, NH, USA.
Russell P Landry
Joyce A DeLeo
Edgar Alfonso Romero-Sandoval
Dartmouth College · USEmmanuel College - Massachusetts · US

Funding

Alternatives to Opioids for Chronic Pain: Part IVR01DA011276 · NIDA · DARTMOUTH COLLEGE · PI DE LEO, JOYCE A · 1997 to 2010
$3.1M
Cannabinoids and Neuroimmune InteractionsR01DA025211 · NIDA · DARTMOUTH COLLEGE · PI ROMERO-SANDOVAL, E. ALFONSO · 2009 to 2010
$711k
NIDA NIH HHS DA025211NIDA NIH HHS DA11276NIDA NIH HHS R01 DA025211
6 · The paper itself

Abstract

backgroundNeuropathic pain due to nerve injury is one of the most difficult types of pain to treat. Following peripheral nerve injury, neuronal and glial plastic changes contribute to central sensitization and perpetuation of mechanical hypersensitivity in rodents. The mitogen activated protein kinase (MAPK) family is pivotal in this spinal cord plasticity. MAPK phosphatases (MKPs) limit inflammatory processes by dephosphorylating MAPKs. For example, MKP-1 preferentially dephosphorylates p-p38. Since spinal p-p38 is pivotal for the development of chronic hypersensitivity in rodent models of pain, and p-p38 inhibitors have shown clinical potential in acute and chronic pain patients, we hypothesize that induction of spinal MKP-1 will prevent the development of peripheral nerve-injury-induced hypersensitivity and p-p38 overexpression.

resultsWe cloned rat spinal cord MKP-1 and optimize MKP-1 cDNA in vitro using transfections to BV-2 cells. We observed that in vitro overexpression of MKP-1 blocked lipopolysaccharide-induced phosphorylation of p38 (and other MAPKs) as well as release of pro-algesic effectors (i.e., cytokines, chemokines, nitric oxide). Using this cDNA MKP-1 and a non-viral, in vivo nanoparticle transfection approach, we found that spinal cord overexpression of MKP-1 prevented development of peripheral nerve-injury-induced tactile hypersensitivity and reduced pro-inflammatory cytokines and chemokines and the phosphorylated form of p38.

conclusionsOur results indicate that MKP-1, the natural regulator of p-p38, mediates resolution of the spinal cord pro-inflammatory milieu induced by peripheral nerve injury, resulting in prevention of chronic mechanical hypersensitivity. We propose that MKP-1 is a potential therapeutic target for pain treatment or prevention.

Indexed as

AnimalsBehavior, AnimalCell LineCytokinesDisease Models, AnimalDual Specificity Phosphatase 1Gene Knockdown TechniquesInflammation MediatorsLumbar VertebraeMicrogliaNeuralgiap38 Mitogen-Activated Protein KinasesRatsRats, Sprague-DawleyRNA, Small InterferingSpinal NervesCytokinesDual Specificity Phosphatase 1Dusp1 protein, ratInflammation Mediatorsp38 Mitogen-Activated Protein KinasesRNA, Small Interfering

Identifiers

PMID22540262
PMCPMC3460752
OpenAlexW2113638511

What OpenQuestion 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 OpenQuestion graph.