Evidence map›Paper›PMID 22704965›Full record

ArticleNeuroscience2012

GDNF induces mechanical hyperalgesia in muscle by reducing I(BK) in isolectin B4-positive nociceptors.

J Hendrich, P Alvarez, X Chen, J D Levine

Open access · greenAbstract read
In one paragraph

Article in Neuroscience, 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
2.4field-weighted citation impact, top 12% 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, 31 citations in OpenAlex.

  1. Article
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  5. A dual role for peripheral GDNF signaling in nociception and cardiovascular reflexes in the mouse.Proceedings of the National Academy of Sciences of the United States of America · 2020
    Article
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  9. Action Potential Broadening in Capsaicin-Sensitive DRG Neurons from Frequency-Dependent Reduction of Kv3 Current.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2017
    Article
  10. Article
  11. BK Channels in the Central Nervous System.International review of neurobiology · 2016
    Review
  12. Decreased calcium-activated potassium channels by hypoxia causes abnormal firing in the spontaneous firing medial vestibular nuclei neurons.European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery · 2015
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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 1 institution in 1 country.

J HendrichDepartment of Oral and Maxillofacial Surgery, University of California at San Francisco, CA 94143-0440, USA.
P Alvarez
X Chen
J D Levine
University of California, San Francisco · US

Funding

Acute-to-Chronic Transition in Ergonomic Muscle Pain: Nociceptor MechanismsR01AR063312 · NIAMS · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI LEVINE, JON DAVID · 2013 to 2022
$6.5M
Receptors and Second Messengers for Pain and AnalgesiaP01NS053709 · NINDS · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI LEVINE, JON DAVID · 2007 to 2011
$5.0M
Mechanisms and Risk Factors in Musculoskeletal PainR01AR054635 · NIAMS · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI LEVINE, JON DAVID · 2007 to 2011
$1.6M
NIAMS NIH HHS R01 AR054635NIAMS NIH HHS R01 AR063312NINDS NIH HHS P01 NS053709
6 · The paper itself

Abstract

We have assessed the mechanism underlying glial cell-derived neurotrophic factor (GDNF)-induced mechanical hyperalgesia in the gastrocnemius muscle, using patch clamp electrophysiology, in vivo electrophysiology and behavioral studies. Cultured isolectin B4-positive (IB4+) dorsal root ganglion neurons that innervated this muscle were held under current clamp; the majority developed an increase in action potential duration (a factor of increase of 2.29±0.24, compared to 1.13±0.17 in control, P<0.01) in response to GDNF (200 ng/ml) by 15 min after application. They also demonstrated a depolarization of resting membrane potential, but without significant changes in rheobase, action potential peak, or after-hyperpolarization. Large-conductance voltage- and calcium-activated potassium (BK) channels, which have recently been shown to play a role in the repolarization of IB4+ nociceptors, were inhibited under voltage clamp, as indicated by a significant reduction in the iberiotoxin-sensitive current. In vivo single-fiber recording from muscle afferents revealed that injection of iberiotoxin into their peripheral nociceptive field caused an increase in nociceptor firing in response to a 60s suprathreshold stimulus (an increase from 392.2±119.8 spikes to 596.1±170.8 spikes, P<0.05). This was observed in the absence of changes in the mechanical threshold. Finally, injection of iberiotoxin into the gastrocnemius muscle produced dose-dependent mechanical hyperalgesia. These data support the suggestion that GDNF induces nociceptor sensitization and mechanical hyperalgesia, at least in part, by inhibiting BK current in IB4+ nociceptors.

Indexed as

Action PotentialsAnimalsGanglia, SpinalGlial Cell Line-Derived Neurotrophic FactorGlycoproteinsHyperalgesiaLectinsMaleMuscle, SkeletalNociceptorsPatch-Clamp TechniquesPotassium Channels, Calcium-ActivatedRatsRats, Sprague-DawleyVersicansGlial Cell Line-Derived Neurotrophic FactorGlycoproteinsLectinsPotassium Channels, Calcium-ActivatedVcan protein, ratVersicans

Identifiers

PMID22704965
PMCPMC3404506
OpenAlexW1987541552

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.