Evidence map›Paper›PMID 25789619›Full record

ArticlePloS one2015

Hyperbaric oxygen treatment at various stages following chronic constriction injury produces different antinociceptive effects via regulation of P2X4R expression and apoptosis.

Bai-Song Zhao, Xing-Rong Song, Pei-Ying Hu, Ling-Xin Meng, Yong-Hong Tan, Ying-Jun She, Yuan-Yuan Ding

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed
2.1field-weighted citation impact, top 13% 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

8 citing papers in PubMed, 16 citations in OpenAlex.

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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 3 institutions in 1 country.

Bai-Song ZhaoDepartment of Anesthesiology, Guangzhou Women and Children's Medical Center, 510623, Guangzhou, China.
Xing-Rong SongDepartment of Anesthesiology, Guangzhou Women and Children's Medical Center, 510623, Guangzhou, China.
Pei-Ying HuDepartment of Anesthesiology, Guangzhou Women and Children's Medical Center, 510623, Guangzhou, China.
Ling-Xin MengDepartment of Pain, The Shengjing Hospital of China Medical University, 110004, Shenyang, China.
Yong-Hong TanDepartment of Anesthesiology, Guangzhou Women and Children's Medical Center, 510623, Guangzhou, China.
Ying-Jun SheDepartment of Anesthesiology, Guangzhou Women and Children's Medical Center, 510623, Guangzhou, China.
Yuan-Yuan DingDepartment of Pain, The Shengjing Hospital of China Medical University, 110004, Shenyang, China.
Guangzhou Medical University · CNChina Medical University · CNGuangzhou Women and Children Medical Center · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeThe aims of this study were to investigate the effect of hyperbaric oxygen (HBO) treatment at various stages following chronic constriction injury (CCI) and to explore the underlying mechanisms of HBO treatment.

methodsForty adult male Sprague-Dawley rats were randomly assigned to five groups (n = 8 for each group): the sham group, CCI group, HBO1 group, HBO2 group, and HBO3 group. Neuropathic pain was induced by CCI of the sciatic nerve. HBO treatment began on postoperative days 1, 6, and 11 and continued for 5 days. The mechanical withdrawal threshold and thermal withdrawal latency were tested on preoperative day 3 and postoperative days 1, 3, 5, 7, 10, 14, and 21. The expression of P2X4R was determined by immunohistochemistry and western blot analysis. Cell apoptosis was measured using TUNEL staining. The expression of caspase 3 was measured using reverse transcription polymerase chain reaction (RT-PCR). Electron microscopy was used to determine the ultrastructural changes.

resultsEarly HBO treatment beginning on postoperative day 1 produced a persistent antinociceptive effect and inhibited the CCI-induced increase in the expression of P2X4R without changing CCI-induced apoptosis. In contrast, late HBO treatment beginning on postoperative day 11 produced a persistent antinociceptive effect and inhibited CCI-induced apoptosis and upregulation of caspase-3 without changing the expression of P2X4R. In addition, late HBO treatment reduced CCI-induced ultrastructural damage. However, HBO treatment beginning on postoperative day 6 produced a transient antinociceptive effect without changing the expression of P2X4R or CCI-induced apoptosis.

conclusionHBO treatment at various stages following CCI can produce antinociceptive effects via different mechanisms. Early HBO treatment is associated with inhibition of P2X4R expression, and late HBO treatment is associated with inhibition of cell apoptosis.

Indexed as

Hyperbaric OxygenationAnalgesicsAnimalsApoptosisBehavior, AnimalCarbon TetrachlorideCaspase 3ConstrictionDisease Models, AnimalImmunohistochemistryMaleMicroscopy, ElectronNeuralgiaRatsRats, Sprague-DawleyReceptors, Purinergic P2X4AnalgesicsCarbon TetrachlorideCaspase 3Receptors, Purinergic P2X4

Identifiers

PMID25789619
PMCPMC4366063
OpenAlexW2076973628

What OpenQuestion holds

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LicenceCC BY
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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.