Evidence map›Paper›PMID 25158907›Full record

ArticleEuropean journal of pain (London, England)2015

Differential effects of voltage-gated calcium channel blockers on calcium channel alpha-2-delta-1 subunit protein-mediated nociception.

E Chang, X Chen, M Kim, N Gong, S Bhatia, Z D Luo

Abstract read
In one paragraph

Article in European journal of pain (London, England), 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
1.0field-weighted citation impact, top 25% 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

16 citing papers in PubMed, 25 citations in OpenAlex.

  1. Article
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  3. Review
  4. Article
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  8. Article
  9. Review
  10. Article
  11. Neuropathic Pain Treatment: Still a Challenge.Neurology international · 2016
    Article
  12. Review
  13. Emerging Treatments for Neuropathic Pain.Current pain and headache reports · 2015
    Review
  14. Article
  15. Article
  16. Article
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

6 authors at 3 institutions in 3 countries.

E ChangDepartment of Anesthesiology and Perioperative Care, University of California Irvine, Irvine, USA; Department of Physical Medicine and Rehabilitation, University of California Irvine, Irvine, USA; Reeve-Irvine Research Center for Spinal Cord Injury, University of California Irvine, Irvine, USA.
X Chen
M Kim
N Gong
S Bhatia
Z D Luo
University of California, Irvine · USConcordia University Irvine · USKyung Hee University · KR

Funding

University of California Health Participation in the National COVID Cohort Collaborative (N3C)UL1TR001414 · NCATS · UNIVERSITY OF CALIFORNIA-IRVINE · PI COOPER, DAN M, VILAIN, ERIC J. · 2015 to 2023
$35.1M
Rehabilitation Medicine Scientist Training (RMST) ProgramK12HD001097 · NICHD · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI BONINGER, MICHAEL L. · 1995 to 2016
$14.1M
Institute for Clinical and Translational ScienceUL1TR000153 · NCATS · UNIVERSITY OF CALIFORNIA-IRVINE · PI COOPER, DAN M · 2012 to 2015
$12.1M
A novel pathway mediating the development of chronic orofacial neuropathic painR01DE021847 · NIDCR · UNIVERSITY OF CALIFORNIA-IRVINE · PI LUO, ZHIGANG DAVID, STEWARD, OSWALD · 2011 to 2015
$3.6M
Mechanism of Calcium Channel Cava2d1 Protein Mediated Neuropathic PainR01NS064341 · NINDS · UNIVERSITY OF CALIFORNIA-IRVINE · PI LUO, ZHIGANG DAVID · 2010 to 2013
$1.2M
NCATS NIH HHS UL1 TR000153NCATS NIH HHS UL1 TR001414NICHD NIH HHS K12 HD001097NIDCR NIH HHS DE021847NIDCR NIH HHS R01 DE021847NINDS NIH HHS NS064341NINDS NIH HHS R01 NS064341
6 · The paper itself

Abstract

backgroundOverexpression of the voltage-gated calcium channel (VGCC) alpha-2-delta1 subunit protein (Cav α2 δ1 ) has been shown to cause pain states. However, whether VGCC are involved in pain states driven by abnormal Cav α2 δ1 expression is not known.

methodsIntrathecal injection of N-, P/Q- and L-type VGCC blockers were tested in two models: a transgenic neuronal Cav α2 δ1 overexpression (TG) model with behavioural hypersensitivity and a spinal nerve ligation (SNL) model with Cav α2 δ1 overexpression in sensory pathways and neuropathy pain states.

resultsThe nociceptive response to mechanical stimuli was significantly attenuated in both models with ω-conotoxin GVIA (an N-type VGCC blocker) and nifedipine (an L-type VGCC blocker), in which ω-conotoxin GVIA appeared more potent than nifedipine. Treatments with ω-agatoxin IVA (P-VGCC blocker), but not ω-conotoxin MVIIC (Q-VGCC blocker) had similar potency in the TG model as the N-type VGCC blocker, while both ω-agatoxin IVA and ω-conotoxin MVIIC had minimal effects in the SNL model compared with controls.

conclusionThese findings suggest that, at the spinal level, N- and L-type VGCC are likely involved in behavioural hypersensitivity states driven by Cav α2 δ1 overexpression. Q-type VGCC has minimal effects in both models. The anti-nociceptive effects of P-type VGCC blocker in the Cav α2 δ1 TG mice, but minimally at the SNL model with presynaptic Cav α2 δ1 up-regulation, suggest that its potential action site(s) is at the post-synaptic and/or supraspinal level. These findings support that N-, L- and P/Q-type VGCC have differential contributions to behavioural hypersensitivity modulated by Cav α2 δ1 dysregulation at the spinal cord level.

Indexed as

AnimalsBehavior, AnimalCalcium Channel BlockersCalcium ChannelsCalcium Channels, L-TypeCalcium Channels, N-TypeEfferent PathwaysHyperalgesiaInjections, SpinalLigationMaleMiceNeuralgiaNifedipineNociceptionomega-Conotoxin GVIACACNA2D1 protein, mouseCalcium Channel BlockersCalcium ChannelsCalcium Channels, L-TypeCalcium Channels, N-TypeNifedipineomega-Conotoxin GVIA

Identifiers

PMID25158907
PMCPMC4344437
OpenAlexW1853282671

What OpenQuestion holds

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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.