Evidence map›Paper›PMID 22824437›Full record

ArticleJournal of neuroinflammation2012

Keratinocyte expression of inflammatory mediators plays a crucial role in substance P-induced acute and chronic pain.

Tzuping Wei, Tian-Zhi Guo, Wen-Wu Li, Saiyun Hou, Wade S Kingery, John David Clark

Open access · goldAbstract read
In one paragraph

Article in Journal of neuroinflammation, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 39 papers.

0numbers the graph read from it
0cells of the map it votes in
39citing papers in PubMed
3.5field-weighted citation impact, top 7% 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

39 citing papers in PubMed, 64 citations in OpenAlex.

  1. Comparison of crevicular fluid cytokine levels after the application of surface sealants : A randomized trial.Journal of orofacial orthopedics = Fortschritte der Kieferorthopadie : Organ/official journal Deutsche Gesellschaft fur Kieferorthopadie · 2019
    Trial
  2. Article
  3. Article
  4. Article
  5. Not Just Neurons: Pain Is Orchestrated in Partnership with Many Non-neuronal Cells.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2025
    Review
  6. Article
  7. Article
  8. Article
  9. Review
  10. Neuropathic pain; what we know and what we should do about it.Frontiers in pain research (Lausanne, Switzerland) · 2023
    Review
  11. Review
  12. Article
  13. Article
  14. Article
  15. Substance P as a potential biomarker of pain assessment in dogs.Iranian journal of veterinary research · 2019
    Article
  16. Review
  17. Article
  18. Article
  19. Article
  20. Negative Pressure Therapy in the Regeneration of the Sciatic Nerve Using Vacuum - Assisted Closure in a Rabbit Model.Medical science monitor : international medical journal of experimental and clinical research · 2018
    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 1 institution in 1 country.

Tzuping WeiPhysical Medicine and Rehabilitation Service, Veterans Affairs Palo Alto Health Care System, Palo Alto, CA 94304, USA.
Tian-Zhi Guo
Wen-Wu Li
Saiyun Hou
Wade S Kingery
John David Clark
VA Palo Alto Health Care System · US

Funding

Inflammasome Activation in Complex Regional Pain SyndromeR01NS072143 · NINDS · PALO ALTO VETERANS INSTIT FOR RESEARCH · PI CLARK, DAVID J., KINGERY, WADE S · 2011 to 2015
$1.6M
Mechanisms of Neuroinflammation after FractureR01NS072168 · NINDS · PALO ALTO VETERANS INSTIT FOR RESEARCH · PI KINGERY, WADE S · 2011 to 2014
$962k
NINDS NIH HHS R01 NS072143NINDS NIH HHS R01 NS072168
6 · The paper itself

Abstract

Tibia fracture in rats followed by cast immobilization leads to nociceptive, trophic, vascular and bone-related changes similar to those seen in Complex Regional Pain Syndrome (CRPS). Substance P (SP) mediated neurogenic inflammation may be responsible for some of the signs of CRPS in humans. We therefore hypothesized that SP acting through the SP receptor (NK1) leads to the CRPS-like changes found in the rat model. In the present study, we intradermally injected rats with SP and monitored hindpaw mechanical allodynia, temperature, and thickness as well as tissue levels of tumor necrosis factor-α (TNF-α), interleukin 1β (IL-1β), interleukin 6 (IL-6), and nerve growth factor-β (NGF) for 72 h. Anti-NGF antibody was utilized to block the effects of SP-induced NGF up-regulation. Fracture rats treated with the selective NK1 receptor antagonist LY303870 prior to cast removal were assessed for BrdU, a DNA synthesis marker, incorporation in skin cells to examine cellular proliferation. Bone microarchitecture was measured using micro computed tomography (μCT). We observed that: (1) SP intraplantar injection induced mechanical allodynia, warmth and edema as well as the expression of nociceptive mediators in the hindpaw skin of normal rats, (2) LY303870 administered intraperitoneally after fracture attenuated allodynia, hindpaw unweighting, warmth, and edema, as well as cytokine and NGF expression, (3) LY303870 blocked fracture-induced epidermal thickening and BrdU incorporation after fracture, (4) anti-NGF antibody blocked SP-induced allodynia but not warmth or edema, and (5) LY303870 had no effect on bone microarchitecture. Collectively our data indicate that SP acting through NK1 receptors supports the nociceptive and vascular components of CRPS, but not the bone-related changes.

Indexed as

Gene Expression RegulationAcute PainAnimalsChronic PainInflammation MediatorsKeratinocytesMalePain MeasurementRatsRats, Sprague-DawleySubstance PInflammation MediatorsSubstance P

Identifiers

PMID22824437
PMCPMC3458986
OpenAlexW2150458942

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.