Evidence map›Paper›PMID 34473417›Full record

ArticleBrain and behavior2021

Neuroprotective effects of metformin on cerebral ischemia-reperfusion injury by regulating PI3K/Akt pathway.

Cailian Ruan, Hongtao Guo, Jiaqi Gao, Yiwei Wang, Zhiyong Liu, Jinyi Yan, Xiaoji Li, Haixia Lv

Open access · goldFull text read
In one paragraph

Article in Brain and behavior, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
0.3field-weighted citation impact, top 45% 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

18 citing papers in PubMed, 3 citations in OpenAlex.

  1. Review
  2. Article
  3. Article
  4. Review
  5. Review
  6. Review
  7. Article
  8. Article
  9. Review
  10. Review
  11. Article
  12. Article
  13. Article
  14. Review
  15. Review
  16. Metformin mitigates amyloid βMetabolic brain disease · 2023
    Article
  17. Dysregulation of mTOR Signaling after Brain Ischemia.International journal of molecular sciences · 2022
    Review
  18. 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

8 authors at 2 institutions in 1 country.

Cailian RuanDepartment ofMedicine, Xi'an Jiaotong University, No. 76 Yanta West Road, Xi'an, shannxi 710061, P. R. China.ORCID 0000-0003-4660-5550
Hongtao GuoCollege of Medicine, Yan'an University, Yan'an, shannxi 716000, P. R. China.
Jiaqi GaoCollege of Medicine, Yan'an University, Yan'an, shannxi 716000, P. R. China.
Yiwei WangCollege of Medicine, Yan'an University, Yan'an, shannxi 716000, P. R. China.
Zhiyong LiuCollege of Medicine, Yan'an University, Yan'an, shannxi 716000, P. R. China.
Jinyi YanCollege of Medicine, Yan'an University, Yan'an, shannxi 716000, P. R. China.
Xiaoji LiCollege of Medicine, Yan'an University, Yan'an, shannxi 716000, P. R. China.
Haixia LvDepartment ofMedicine, Xi'an Jiaotong University, No. 76 Yanta West Road, Xi'an, shannxi 710061, P. R. China.
Yan'an University · CNXi'an Jiaotong University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Metformin (Met) is a commonly used drug in the treatment of type 2 diabetes. Currently, it has been found that Met can effectively reduce the incidence of stroke and exert anti-inflammatory effects. However, its role in ischemia-reperfusion (I/R)-induced nerve injury remains unclear. This study aims to investigate the neuroprotective effects of Met in I/R-induced neuron injury as well as the underlying mechanism. A middle cerebral artery occlusion (MCAO) model was established in Sprague Dawley (SD) rats, which were then treated with different doses of Met. Neurological deficits of rats were measured at different times post-surgery. TTC staining was done to observe the volume of cerebral infarction. HE staining was performed to observe pathological changes of brain tissues. Immunohistochemistry was performed to observe the expression of inflammatory factors in the cerebral tissues. qRT-PCR method was used to detect the relative expression of PI3K, Akt mRNA in cells after 24 h of drug action. Western blot method was used to detect the expression of PI3K, p-PI3K, Akt, and p-Akt in hippocampus. What is more, in vitro experiments were performed on BV2 microglia to verify the role of Met against oxygen-glucose deprivation (OGD). As a result, Met dose-dependently attenuated neurological deficits and neuronal apoptosis. Besides, Met administration also significantly reduced BV2 cells apoptosis and inflammatory response. Mechanistically, Met inactivated PI3K/Akt pathway induced by I/R and OGD, while it upregulated PI3K. In conclusion, Met protected rats from cerebral I/R injury via reducing neuronal apoptosis and microglial inflammation through PI3K/Akt pathway.

Indexed as

Brain IschemiaDiabetes Mellitus, Type 2MetforminNeuroprotective AgentsReperfusion InjuryAnimalsApoptosisInfarction, Middle Cerebral ArteryPhosphatidylinositol 3-KinasesProto-Oncogene Proteins c-aktRatsRats, Sprague-DawleyMetforminNeuroprotective AgentsPhosphatidylinositol 3-KinasesProto-Oncogene Proteins c-aktcerebral ischemia-reperfusioninflammationmetforminPI3K/Akt

Identifiers

PMID34473417
PMCPMC8553305
OpenAlexW3138811402

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.