Evidence map›Paper›PMID 27411353›Full record

ArticleMolecular pain2016

Central activation of TRPV1 and TRPA1 by novel endogenous agonists contributes to mechanical allodynia and thermal hyperalgesia after burn injury.

Dustin Green, Shivani Ruparel, Xiaoli Gao, Nikita Ruparel, Mayur Patil, Armen Akopian, Kenneth Hargreaves

Open access · goldAbstract read
In one paragraph

Article in Molecular pain, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 44 papers.

0numbers the graph read from it
0cells of the map it votes in
44citing papers in PubMed
4.7field-weighted citation impact, top 5% 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

44 citing papers in PubMed, 76 citations in OpenAlex.

  1. Trial
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  9. Review
  10. Burn scar pain: from mechanisms to treatments.Frontiers in physiology · 2025
    Review
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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

7 authors at 1 institution in 1 country.

Dustin GreenUniversity of Texas Health Science Center at San Antonio.
Shivani RuparelUniversity of Texas Health Science Center at San Antonio.
Xiaoli GaoUniversity of Texas Health Science Center at San Antonio.
Nikita RuparelUniversity of Texas Health Science Center at San Antonio.
Mayur PatilUniversity of Texas Health Science Center at San Antonio.
Armen AkopianUniversity of Texas Health Science Center at San AntonioUniversity of Texas Health Science Center at San AntonioUniversity of Texas Health Science Center at San AntonioUniversity of Texas Health Science Center at San AntonioUniversity of Texas Health Science Center at San AntonioUniversity of Texas Health Science Center at San Antonio.
Kenneth HargreavesUniversity of Texas Health Science Center at San Antonio hargreaves@uthscsa.edu.
The University of Texas Health Science Center at San Antonio · US

Funding

Institute for Integration of Medicine & Science: A Partnership to Improve HealthUL1TR001120 · NCATS · UNIVERSITY OF TEXAS HLTH SCIENCE CENTER · PI CLARK, ROBERT A, HARGREAVES, KENNETH M · 2013 to 2017
$16.5M
Institute for Integration of Medicine & Science: A Partnership to Improve HealthUL1TR000149 · NCATS · UNIVERSITY OF TEXAS HLTH SCIENCE CENTER · PI CLARK, ROBERT A · 2012 to 2013
$6.8M
Prolactin regulation of postoperative pain in males and femalesR01GM112747 · NIGMS · UNIVERSITY OF TEXAS HLTH SCIENCE CENTER · PI AKOPIAN, ARMEN N · 2015 to 2018
$1.2M
Evaluation of Endogenous TRP Agonists in Human BurnsR01GM106075 · NIGMS · UNIVERSITY OF TEXAS HLTH SCIENCE CENTER · PI HARGREAVES, KENNETH M · 2014 to 2017
$1.2M
The Role of the Mast Cells in Postoperative PainF32GM121030 · NIGMS · JOHNS HOPKINS UNIVERSITY · PI GREEN, DUSTIN PEPPER · 2016 to 2017
$111k
The Role of the OLAM System in Burn PainF31NS082019 · NINDS · UNIVERSITY OF TEXAS HLTH SCIENCE CENTER · PI GREEN, DUSTIN PEPPER · 2013 to 2014
$53k
NCATS NIH HHS 8UL1TR000149NCATS NIH HHS UL1 TR001120NIGMS NIH HHS F32 GM121030NIGMS NIH HHS R01 GM106075NIGMS NIH HHS R01 GM112747NINDS NIH HHS F31NS082019
6 · The paper itself

Abstract

The primary complaint of burn victims is an intense, often devastating spontaneous pain, with persistence of mechanical and thermal allodynia. The transient receptor potential channels, TRPV1 and TRPA1, are expressed by a subset of nociceptive sensory neurons and contribute to inflammatory hypersensitivity. Although their function in the periphery is well known, a role for these TRP channels in central pain mechanisms is less well defined. Lipid agonists of TRPV1 are released from peripheral tissues via enzymatic oxidation after burn injury; however, it is not known if burn injury triggers the release of oxidized lipids in the spinal cord. Accordingly, we evaluated whether burn injury evoked the central release of oxidized lipids . Analysis of lipid extracts of spinal cord tissue with HPLC-MS revealed a significant increase in levels of the epoxide and diol metabolites of linoleic acid: 9,10-DiHOME, 12,13-DiHOME, 9(10)-EpOME, and 12(13)-EpOME, that was reduced after intrathecal (i.t.) injection of the oxidative enzyme inhibitor ketoconazole. Moreover, we found that these four lipid metabolites were capable of specifically activating both TRPV1 and TRPA1. Intrathecal injection of specific antagonists to TRPV1 (AMG-517) or TRPA1 (HC-030031) significantly reduced post-burn mechanical and thermal allodynia. Finally, i.t. injection of ketoconazole significantly reversed post-burn mechanical and thermal allodynia. Our data indicate that spinal cord TRPV1 and TRPA1 contributes to pain after burn and identifies a novel class of oxidized lipids elevated in the spinal cord after burn injury. Since the management of burn pain is problematic, these findings point to a novel approach for treating post-burn pain.

Indexed as

Ion Channel GatingAnimalsBurnsCHO CellsCricetinaeCricetulusHyperalgesiaLinoleic AcidMaleOxidation-ReductionRats, Sprague-DawleySensory Receptor CellsSpinal CordTime FactorsTRPA1 Cation ChannelTRPC Cation ChannelsLinoleic AcidTRPA1 Cation ChannelTrpa1 protein, ratTRPC Cation ChannelsTrpv1 protein, ratTRPV Cation Channels

Identifiers

PMID27411353
PMCPMC4955965
OpenAlexW2504847267

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.