Evidence map›Paper›PMID 24361846›Full record

ArticleAnesthesia and analgesia2014

Spinal cord stimulation reduces mechanical hyperalgesia and glial cell activation in animals with neuropathic pain.

Karina L Sato, Lisa M Johanek, Luciana S Sanada, Kathleen A Sluka

Open access · greenAbstract read
In one paragraph

Article in Anesthesia and analgesia, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 49 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
49citing papers in PubMed, 1 pooled it
2.5field-weighted citation impact, top 11% 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

49 citing papers in PubMed, 1 synthesis or guideline pooled it, 101 citations in OpenAlex.

  1. Pooled it
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  9. Activity of spinal RORβ neurons is related to functional improvements following combination treatment after complete SCI.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
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  13. Article
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  15. Article
  16. Article
  17. Olfactory ensheathing cells and neuropathic pain.Frontiers in cell and developmental biology · 2023
    Review
  18. Advances in Pain Medicine: a Review of New Technologies.Current pain and headache reports · 2022
    Review
  19. Article
  20. Review
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.

Karina L SatoFrom the Department of Physical Therapy, University of Iowa, Iowa City, Iowa; and Medtronic, Minneapolis, Minnesota.
Lisa M Johanek
Luciana S Sanada
Kathleen A Sluka
University of Iowa · USMedtronic (United States) · US

Funding

Role of ASIC3 in the Etiology of FibromyalgiaR01AR053509 · NIAMS · UNIVERSITY OF IOWA · PI SLUKA, KATHLEEN A · 2006 to 2010
$3.2M
Central Mechanisms involved in the interactions between muscle pain and exerciseR01AR061371 · NIAMS · UNIVERSITY OF IOWA · PI SLUKA, KATHLEEN A · 2012 to 2016
$2.3M
Central contributions to pathobiology of fibromyalgiaR01AR052316 · NIAMS · UNIVERSITY OF IOWA · PI SLUKA, KATHLEEN A · 2005 to 2009
$1.5M
NIAMS NIH HHS AR052316NIAMS NIH HHS R01 AR052316NIAMS NIH HHS R01 AR053509NIAMS NIH HHS R01 AR061371
6 · The paper itself

Abstract

backgroundSpinal cord stimulation (SCS) is commonly used for neuropathic pain; the optimal variables and mechanisms of action are unclear. We tested whether modulation of SCS variables improved analgesia in animals with neuropathic pain by comparing 6-hour vs 30-minute duration and 50%, 75%, or 90% motor threshold (MT) intensity (amplitude). Furthermore, we examined whether maximally effective SCS reduced glial activation in the spinal cord in neuropathic animals.

methodsSprague-Dawley rats received the spared nerve injury model and were implanted with an epidural SCS lead. Animals were tested for mechanical withdrawal threshold of the paw before and 2 weeks after spared nerve injury, before and after SCS daily for 4 days, and 1, 4, and 9 days after SCS. Spinal cords were examined for the effects of SCS on glial cell activation.

resultsThe mechanical withdrawal threshold decreased, and glial immunoreactivity increased 2 weeks after spared nerve injury. For duration, 6-hour SCS significantly increased the mechanical withdrawal threshold when compared with 30-minute SCS or sham SCS; 30-minute SCS was greater than sham SCS. For intensity (amplitude), 90% MT SCS significantly increased the withdrawal threshold when compared with 75% MT SCS, 50% MT SCS, and sham SCS. Both 4 and 60 Hz SCS decreased glial activation (GFAP, MCP-1, and OX-42) in the spinal cord dorsal horn when compared with sham.

conclusionsSix-hour duration SCS with 90% MT showed the largest increase in mechanical withdrawal threshold, suggesting that the variables of stimulation are important for clinical effectiveness. One potential mechanism for SCS may be to reduce glial activation at the level of the spinal cord.

Indexed as

AnimalsBehavior, AnimalElectrodesHyperalgesiaNeuralgiaNeurogliaPain MeasurementPain ThresholdRatsRats, Sprague-DawleySpinal CordSpinal Cord StimulationStress, MechanicalTime FactorsTrauma, Nervous System

Identifiers

PMID24361846
PMCPMC4297213
OpenAlexW2052771668

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.