Evidence map›Paper›PMID 34326272›Full record

ArticleAging2021

Obesity increases neuropathic pain via the AMPK-ERK-NOX4 pathway in rats.

Chang-Ning Fu, Hui Wei, Wen-Shuang Gao, Sha-Sha Song, Shou-Wei Yue, Yu-Juan Qu

Open access · hybridFull text read
In one paragraph

Article in Aging, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
2.0field-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

13 citing papers in PubMed, 23 citations in OpenAlex.

  1. Review
  2. Review
  3. Multiple Roles of Palmitic Acid in Cardiovascular Diseases.Journal of inflammation research · 2025
    Review
  4. Article
  5. Article
  6. Probiotic and high-fat diet: effects on pain assessment, body composition, and cytokines in male and female adolescent and adult rats.American journal of physiology. Regulatory, integrative and comparative physiology · 2024
    Article
  7. Article
  8. Article
  9. Article
  10. Inhibition Effect of Adipogenesis and Lipogenesis via Activation ofInternational journal of molecular sciences · 2023
    Article
  11. Review
  12. NADPH Oxidases in Pain Processing.Antioxidants (Basel, Switzerland) · 2022
    Review
  13. 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 2 institutions in 1 country.

Chang-Ning FuRehabilitation Center, Qilu Hospital, Cheelo College of Medicine, Shandong University, Jinan, China.
Hui WeiRehabilitation Center, Qilu Hospital, Cheelo College of Medicine, Shandong University, Jinan, China.
Wen-Shuang GaoRehabilitation Center, Qilu Hospital, Cheelo College of Medicine, Shandong University, Jinan, China.
Sha-Sha SongRehabilitation Center, Qilu Hospital, Cheelo College of Medicine, Shandong University, Jinan, China.
Shou-Wei YueRehabilitation Center, Qilu Hospital, Cheelo College of Medicine, Shandong University, Jinan, China.
Yu-Juan QuRehabilitation Center, Qilu Hospital, Cheelo College of Medicine, Shandong University, Jinan, China.
Qilu Hospital of Shandong University · CNShandong Provincial Hospital · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

This study focused on the relationship between extracellular-regulated kinase (ERK) and obesity-induced increases in neuropathic pain. We fed rats a high-fat diet to establish the obesity model, and rats were given surgery to establish the chronic compression of the dorsal root ganglia (CCD) model. U0126 was applied to inhibit ERK, and metformin or 5-aminoimidazole-4-carboxamide ribonucleoside (AICAR) was applied to cause AMP-activated protein kinase (AMPK) activation. Paw withdrawal mechanical threshold (PWMT) were calculated to indicate the level of neuropathic pain. The data indicated that compared with normal CCD rats, the PWMT of obese CCD rats were decreased, accompanied with an increase of ERK phosphorylation, NAD(P)H oxidase 4 (NOX4) protein expression, oxidative stress and inflammatory level in the L4 to L5 spinal cord and dorsal root ganglia (DRG). Administration of U0126 could partially elevate the PWMT and reduce the protein expression of NOX4 and the above pathological changes in obese CCD rats.

Indexed as

Ganglia, SpinalMAP Kinase Signaling SystemSpinal CordAminoimidazole CarboxamideAMP-Activated Protein KinasesAnimalsApoptosisButadienesDiet, High-FatDisease Models, AnimalEnzyme InhibitorsHypoglycemic AgentsInflammationMaleMetforminNADPH Oxidase 4AICA ribonucleotideAminoimidazole CarboxamideAMP-Activated Protein KinasesButadienesEnzyme InhibitorsHypoglycemic AgentsMetforminNADPH Oxidase 4NitrilesNox4 protein, ratRibonucleotidesU 0126extracellular-regulated kinaseneuropathic painobesity

Identifiers

PMID34326272
PMCPMC8351691
OpenAlexW3186826220

What OpenQuestion holds

Textfull text, public
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.