Evidence map›Paper›PMID 25323902›Full record

ArticleYonsei medical journal2014

Epidural dexamethasone decreased inflammatory hyperalgesia and spinal cPLA₂ expression in a rat formalin test.

Sam-Hong Min, Jung-Sub Soh, Ji-Yong Park, Sung-Uk Choi, Hye-Won Lee, Jae-Jin Lee, Jae-Hwan Kim

Open access · goldAbstract read
In one paragraph

Article in Yonsei medical journal, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed, 1 pooled it
0.5field-weighted citation impact, top 32% 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

4 citing papers in PubMed, 1 synthesis or guideline pooled it, 8 citations in OpenAlex.

  1. Safe Use of Epidural Corticosteroid Injections: Recommendations of the WIP Benelux Work Group.Pain practice : the official journal of World Institute of Pain · 2019
    Guideline
  2. Article
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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.

Sam-Hong MinDepartment of Anesthesiology and Pain Medicine, Korea University College of Medicine, Seoul, Korea.
Jung-Sub SohDepartment of Anesthesiology and Pain Medicine, Korea University College of Medicine, Seoul, Korea.
Ji-Yong ParkDepartment of Anesthesiology and Pain Medicine, Korea University College of Medicine, Seoul, Korea.
Sung-Uk ChoiDepartment of Anesthesiology and Pain Medicine, Korea University College of Medicine, Seoul, Korea.
Hye-Won LeeDepartment of Anesthesiology and Pain Medicine, Korea University College of Medicine, Seoul, Korea.
Jae-Jin LeeDepartment of Anesthesiology and Pain Medicine, Korea University College of Medicine, Seoul, Korea.
Jae-Hwan KimDepartment of Anesthesiology and Pain Medicine, Korea University College of Medicine, Seoul, Korea. anejhkim@korea.ac.kr.
Korea University · KR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeThe aim of this study was to investigate the effect of epidural dexamethasone on analgesia and cytosolic phospholipase A₂ (cPLA₂) expression in the spinal cord in a rat formalin test. MATERIALS AND

methodsEpidural dexamethasone injection was performed to Sprague-Dawley rats with a 25 gauge needle under fluoroscopy. Following the epidural injection, a formalin induced pain behavior test was performed. Next, the spinal cords corresponding to L4 dorsal root ganglion was extracted to observe the cPLA₂ expression.

resultsThere were no differences in pain response during phase I among the groups. The phase II pain response in 300 μg of epidural dexamethasone group decreased as compared to control, 30 μg of epidural dexamethasone, 100 μg of epidural dexamethasone, and 300 μg of systemic dexamethasone groups. The expression of cPLA₂ decreased in Rexed laminae I-II in 300 μg of the epidural dexamethasone group compared with the ones in the control group.

conclusionTaken together, these results suggest that 300 μg of epidural dexamethasone has an attenuating effect on the peripheral inflammatory tissue injury induced hyperalgesia and this effect is mediated through the inhibition of intraspinal cPLA₂ expression and the primary site of action is the laminae I-II of the spinal cord.

Indexed as

AnimalsAnti-Inflammatory AgentsDexamethasoneFormaldehydeGroup IV Phospholipases A2HyperalgesiaInjections, EpiduralMalePainPain MeasurementRatsRats, Sprague-DawleySpinal CordAnti-Inflammatory AgentsDexamethasoneFormaldehydeGroup IV Phospholipases A2Cytosolic phospholipase A₂dexamethasoneepidural injectionsformalin test

Identifiers

PMID25323902
PMCPMC4205705
OpenAlexW2104323648

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.