Evidence map›Paper›PMID 30015712›Full record

ArticlePain2018

Isolated nociceptors reveal multiple specializations for generating irregular ongoing activity associated with ongoing pain.

Max A Odem, Alexis G Bavencoffe, Ryan M Cassidy, Elia R Lopez, Jinbin Tian, Carmen W Dessauer, Edgar T Walters

Abstract read
In one paragraph

Article in Pain, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 51 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
51citing papers in PubMed, 1 pooled it
4.6field-weighted citation impact, top 4% 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

51 citing papers in PubMed, 1 synthesis or guideline pooled it, 78 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. Article
  6. Review
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Mechanism of gabapentinoid potentiation of opioid effects on cyclic AMP signaling in neuropathic pain.Proceedings of the National Academy of Sciences of the United States of America · 2024
    Article
  14. Article
  15. Article
  16. Article
  17. Peripheral Nervous System Pain Modulation.Current neuropharmacology · 2024
    Article
  18. Review
  19. Article
  20. Intrinsic Homeostatic Plasticity in Mouse and Human Sensory Neurons.bioRxiv : the preprint server for biology · 2023
    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

7 authors at 1 institution in 1 country.

Max A OdemDepartment of Integrative Biology and Pharmacology, McGovern Medical School at UTHealth, Houston, TX, United States.
Alexis G Bavencoffe
Ryan M Cassidy
Elia R Lopez
Jinbin Tian
Carmen W Dessauer
Edgar T Walters
The University of Texas Health Science Center at Houston · US

Funding

Mechanisms of cAMP signaling that drive spontaneous activity in nociceptorsR01NS091759 · NINDS · UNIVERSITY OF TEXAS HLTH SCI CTR HOUSTON · PI Carmen W. Dessauer, EDGAR T. WALTERS · 2015 to 2026
$4.9M
Training Interdisciplinary Pharmacology ScientistsT32GM120011 · NIGMS · UNIVERSITY OF TEXAS HLTH SCI CTR HOUSTON · PI DESSAUER, CARMEN W. · 2016 to 2020
$1.0M
NIGMS NIH HHS T32 GM120011NINDS NIH HHS R01 NS091759
6 · The paper itself

Abstract

Ongoing pain has been linked to ongoing activity (OA) in human C-fiber nociceptors, but rodent models of pain-related OA have concentrated on allodynia rather than ongoing pain, and on OA generated in non-nociceptive Aβ fibers rather than C-fiber nociceptors. Little is known about how ongoing pain or nociceptor OA is generated. To define neurophysiological alterations underlying nociceptor OA, we have used isolated dorsal root ganglion neurons that continue to generate OA after removal from animals displaying ongoing pain. We subclassify OA as either spontaneous activity generated solely by alterations intrinsic to the active neuron or as extrinsically driven OA. Both types of OA were implicated previously in nociceptors in vivo and after isolation following spinal cord injury, which produces chronic ongoing pain. Using novel automated algorithms to analyze irregular changes in membrane potential, we have found, in a distinctive, nonaccommodating type of probable nociceptor, induction by spinal cord injury of 3 alterations that promote OA: (1) prolonged depolarization of resting membrane potential, (2) a hyperpolarizing shift in the voltage threshold for action potential generation, and (3) an increase in the incidence of large depolarizing spontaneous fluctuations (DSFs). Can DSFs also be enhanced acutely to promote OA in neurons from uninjured animals? A low dose of serotonin failed to change resting membrane potential but lowered action potential threshold. When combined with artificial depolarization to model inflammation, serotonin also strongly potentiated DSFs and OA. These findings reveal nociceptor specializations for generating OA that may promote ongoing pain in chronic and acute conditions.

Indexed as

Action PotentialsAnimalsCells, CulturedDisease Models, AnimalGanglia, SpinalMaleNociceptorsPainPatch-Clamp TechniquesRatsRats, Sprague-DawleySensory Receptor CellsSerotoninSpinal Cord InjuriesSerotonin

Identifiers

PMID30015712
PMCPMC6193853
OpenAlexW2883052419

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.