Evidence map›Paper›PMID 30451370›Full record

ArticleJournal of cellular and molecular medicine2019

Metformin relieves neuropathic pain after spinal nerve ligation via autophagy flux stimulation.

Weidong Weng, Chenglun Yao, Keshav Poonit, Xijie Zhou, Chao Sun, Feng Zhang, Hede Yan

Open access · goldAbstract read
In one paragraph

Article in Journal of cellular and molecular medicine, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed, 2 pooled it
2.8field-weighted citation impact, top 9% 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

25 citing papers in PubMed, 2 syntheses or guidelines pooled it, 42 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Review
  4. Article
  5. Review
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  8. Article
  9. Sex Differences in Neuropathy: The Paradigmatic Case of MetFormin.International journal of molecular sciences · 2022
    Article
  10. Review
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  12. Article
  13. Review
  14. Article
  15. Article
  16. Role of the Ubiquitin System in Chronic Pain.Frontiers in molecular neuroscience · 2021
    Review
  17. Article
  18. Article
  19. 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 2 institutions in 2 countries.

Weidong WengDepartment of Orthopedics, Division of Plastic and Hand Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China.
Chenglun YaoDepartment of Orthopedics, Division of Plastic and Hand Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China.
Keshav PoonitDepartment of Orthopedics, Division of Plastic and Hand Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China.
Xijie ZhouDepartment of Orthopedics, Division of Plastic and Hand Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China.
Chao SunDepartment of Orthopedics, Division of Plastic and Hand Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China.
Feng ZhangJoseph M. Still Burn and Reconstructive Center, Jackson, Mississippi.
Hede YanDepartment of Orthopedics, Division of Plastic and Hand Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China.ORCID 0000-0003-1276-3059
Wenzhou Medical University · CNJackson Memorial Hospital · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Neuropathic pain is a well-known type of chronic pain caused by damage to the nervous system. Autophagy is involved in the development and/or progression of many diseases, including neuropathic pain. Emerging evidence suggests that metformin relieves neuropathic pain in several neuropathic pain models; however, metformin's cellular and molecular mechanism for pain relief remains unknown. In this study, we investigated the therapeutic effects of metformin on pain relief after spinal nerve ligation (SNL) and its underlying mechanism of autophagy regulation. Behavioural analysis, histological assessment, expression of c-Fos and molecular biological changes, as well as ultrastructural features, were investigated. Our findings showed that the number of autophagosomes and expression of autophagy markers, such as LC3 and beclin1, were increased, while the autophagy substrate protein p62, as well as the ubiquitinated proteins, were accumulated in the ipsilateral spinal cord. However, metformin enhanced the expression of autophagy markers, while it abrogated the abundance of p62 and ubiquitinated proteins. Blockage of autophagy flux by chloroquine partially abolished the apoptosis inhibition and analgesic effects of metformin on SNL. Taken together, these results illustrated that metformin relieved neuropathic pain through autophagy flux stimulation and provided a new direction for metformin drug development to treat neuropathic pain.

Indexed as

AutophagyAnimalsAutophagosomesBehavior, AnimalHypoglycemic AgentsLigationMaleMetforminNeuralgiaRatsRats, Sprague-DawleySpinal NervesSurgical Procedures, OperativeHypoglycemic AgentsMetforminapoptosisautophagy fluxmetforminneuropathic painspinal nerve ligation

Identifiers

PMID30451370
PMCPMC6349176
OpenAlexW2900519886

What OpenQuestion holds

Textmetadata
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.