Evidence map›Paper›PMID 24891324›Full record

ArticleArthritis & rheumatology (Hoboken, N.J.)2014

Contribution of transient receptor potential ankyrin 1 to chronic pain in aged mice with complete Freund's adjuvant-induced arthritis.

Sheldon R Garrison, Cheryl L Stucky

Open access · greenAbstract read
In one paragraph

Article in Arthritis & rheumatology (Hoboken, N.J.), 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers.

0numbers the graph read from it
0cells of the map it votes in
35citing papers in PubMed
2.9field-weighted citation impact, top 10% 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

35 citing papers in PubMed, 45 citations in OpenAlex.

  1. Article
  2. A Central Somatic Transmission Mediates Proprioceptive Facilitation of Muscle Pain.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026
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  15. Age and Sex Differences in Acute and Osteoarthritis-Like Pain Responses in Rats.The journals of gerontology. Series A, Biological sciences and medical sciences · 2020
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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

2 authors at 1 institution in 1 country.

Sheldon R GarrisonMedical College of Wisconsin, Milwaukee.
Cheryl L Stucky
Medical College of Wisconsin · US

Funding

Nociceptive Mechanisms Underlying Sickle Cell PainR01NS070711 · NINDS · MEDICAL COLLEGE OF WISCONSIN · PI Bonnie N Dittel, Cheryl Louise Stucky · 2009 to 2026
$8.7M
FUNCTIONAL ANALYSIS OF DISTINCT NOCICEPTOR POPULATIONSR01NS040538 · NINDS · MEDICAL COLLEGE OF WISCONSIN · PI STUCKY, CHERYL LOUISE · 2000 to 2019
$6.2M
NINDS NIH HHS NS-040538NINDS NIH HHS NS-070711NINDS NIH HHS R01 NS040538NINDS NIH HHS R01 NS070711PHS HHS PA-08190
6 · The paper itself

Abstract

objectiveTo investigate age-related differences in mechanical sensitivity to inflammatory pain and determine the contribution of transient receptor potential ankyrin 1 (TRPA1) to mechanical hypersensitivity during chronic inflammation in young and aged mice with complete Freund's adjuvant (CFA)-induced arthritis.

methodsMechanical sensitivity in young (3-month-old) and aged (24-month-old) wild-type (TRPA1(+/+) ) mice and TRPA1-deficient (TRPA1(-/-) ) mice was measured behaviorally for 8 weeks following injection of CFA into the plantar hind paw. The severity of inflammation was evaluated by histologic analyses and hind-paw measurements. Ex vivo preparations of the skin saphenous nerve from mice were assessed for C-fiber sensitivity.

resultsAmong naive (uninjured) wild-type mice, aged animals were less sensitive than young animals to mechanical stimuli. Afferent recordings of C-fibers from TRPA1(-/-) mice indicated that TRPA1 contributes to the normal mechanical sensitivity in both age groups. Following injection of CFA, both young and aged TRPA1(+/+) mice exhibited mechanical hypersensitivity. In young TRPA1(-/-) mice injected with CFA, peak development of mechanical hypersensitivity was delayed until week 4, when they exhibited a sharp decrease (9-fold) in the mechanical paw withdrawal threshold, whereas aged TRPA1(-/-) mice did not exhibit mechanical hypersensitivity at any time during the 8 weeks after CFA injection. Recordings of C-fibers from the saphenous nerve supported these findings, with results indicating that both young and aged TRPA1(+/+) mice exhibited increased action potential firing at 8 weeks after CFA injection (increases of 25% and 60%, respectively). Interestingly, among TRPA1(-/-) mice injected with CFA, mechanical firing was increased markedly in the C-fibers of young mice (increase of 80%) but not in the C-fibers of aged mice.

conclusionThese findings reveal marked differences in the long-term mechanical behavioral sensitivity of aged and young mice, and suggest that TRPA1 may be a key contributor to the transition from acute to chronic inflammatory pain in response to mechanical stimuli as well as to the development of nociceptor sensitization selectively in aged mice.

Indexed as

AnimalsArthritis, ExperimentalChronic PainFreund's AdjuvantHyperalgesiaMiceMice, KnockoutPhysical StimulationTransient Receptor Potential ChannelsTRPA1 Cation ChannelFreund's AdjuvantTransient Receptor Potential ChannelsTRPA1 Cation ChannelTrpa1 protein, mouse

Identifiers

PMID24891324
PMCPMC4149259
OpenAlexW1958770111

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.