Evidence map›Paper›PMID 23202804›Full record

ArticleActa pharmacologica Sinica2013

WIN55,212-2 protects oligodendrocyte precursor cells in stroke penumbra following permanent focal cerebral ischemia in rats.

Jing Sun, Yin-quan Fang, Hong Ren, Tao Chen, Jing-jing Guo, Jun Yan, Shu Song, Lu-yong Zhang, Hong Liao

Abstract read
In one paragraph

Article in Acta pharmacologica Sinica, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed, 2 pooled it
–field-weighted citation impact
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

21 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. The Effects of Cannabinoids on Ischemic Stroke-Associated Neuroinflammation: A Systematic Review.Journal of neuroimmune pharmacology : the official journal of the Society on NeuroImmune Pharmacology · 2025
    Pooled it
  2. Cannabinoids in experimental stroke: a systematic review and meta-analysis.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2015
    Pooled it
  3. Review
  4. Review
  5. Genetic Tools in Rodents to Study Cannabinoid Functions.Current topics in behavioral neurosciences · 2026
    Review
  6. Article
  7. Review
  8. Pharmacological Evaluation of Cannabinoid Receptor Modulators Using GRABInternational journal of molecular sciences · 2024
    Article
  9. Review
  10. Article
  11. Article
  12. Review
  13. Review
  14. Review
  15. Review
  16. Article
  17. Review
  18. Article
  19. Review
  20. Review
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

9 authors.

Jing SunNeurobiology Laboratory, Jiangsu Center for Drug Screening, China Pharmaceutical University, Nanjing, China.
Yin-quan Fang
Hong Ren
Tao Chen
Jing-jing Guo
Jun Yan
Shu Song
Lu-yong Zhang
Hong Liao

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

aimTo explore whether the synthetic cannabinoid receptor agonist WIN55,212-2 could protect oligodendrocyte precursor cells (OPCs) in stroke penumbra, thereby providing neuroprotection following permanent focal cerebral ischemia in rats.

methodsAdult male SD rats were subjected to permanent middle cerebral artery occlusion (p-MCAO). The animals were administered WIN55,212-2 at 2 h, and sacrificed at 24 h after the ischemic insult. The infarct volumes and brain swelling were assessed. The expression of cannabinoid receptor type 1 (CB1) in the stroke penumbra was examined using Western blot assay. The pathological changes and proliferation of neural glial antigen 2-positive OPCs (NG2(+) cells) in the stroke penumbra were studied using immunohistochemistry staining.

resultsp-MCAO significantly increased the expression of CB1 within the stroke penumbra with the highest level appearing at 2 h following the ischemic insult. Administration of WIN55,212-2 (9 mg/kg, iv) significantly attenuated the brain swelling, and reduced the infarct volume as well as the number of tau-immunoreactive NG2(+) cells (tau-1(+)/NG2(+) cells) in the stroke penumbra. Moreover, WIN55,212-2 significantly promoted the proliferation of NG2(+) cells in the stroke penumbra and in the ipsilateral subventricular zone at 24 h following the ischemic insult. Administration of the selective CB1 antagonist rimonabant (1 mg/kg, iv) partially blocked the effects caused by WIN55,212-2.

conclusionTau-1 is expressed in NG2(+) cells following permanent focal cerebral ischemic injury. Treatment with WIN55,212-2 reduces the number of tau-1(+)/NG2(+) cells and promotes NG2(+) cell proliferation in the stroke penumbra, which are mediated partially via CB1 and may contribute to its neuroprotective effects.

Indexed as

AnimalsAntibodies, MonoclonalBenzoxazinesBrainCannabinoid Receptor AgonistsCell ProliferationInfarction, Middle Cerebral ArteryMaleMorpholinesNaphthalenesRatsRats, Sprague-DawleyReceptor, Cannabinoid, CB1(3R)-((2,3-dihydro-5-methyl-3-((4-morpholinyl)methyl)pyrrolo-(1,2,3-de)-1,4-benzoxazin-6-yl)(1-naphthalenyl))methanoneAntibodies, MonoclonalBenzoxazinesCannabinoid Receptor AgonistsMorpholinesNaphthalenesReceptor, Cannabinoid, CB1tau-1 monoclonal antibody

Identifiers

PMID23202804
PMCPMC4086494

What OpenQuestion holds

Textmetadata
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.