Evidence map›Paper›PMID 27177932›Full record

ArticleThe European journal of neuroscience2016

Early glycogen synthase kinase-3β and protein phosphatase 2A independent tau dephosphorylation during global brain ischaemia and reperfusion following cardiac arrest and the role of the adenosine monophosphate kinase pathway.

Shohreh Majd, John H T Power, Simon A Koblar, Hugh J M Grantham

Open access · hybridAbstract read
In one paragraph

Article in The European journal of neuroscience, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
2.7field-weighted citation impact, top 11% 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

23 citing papers in PubMed, 29 citations in OpenAlex.

  1. International journal of molecular sciences · 2026
    Article
  2. Genomic and proteomic conversion of brain ischemia to Alzheimer's disease.Frontiers in cell and developmental biology · 2026
    Review
  3. International journal of molecular sciences · 2024
    Article
  4. Article
  5. Ethanolic Extract ofMolecules (Basel, Switzerland) · 2023
    Article
  6. Article
  7. Review
  8. Review
  9. Review
  10. Review
  11. Review
  12. Brain Ischemia as a Prelude to Alzheimer's Disease.Frontiers in aging neuroscience · 2021
    Review
  13. Review
  14. Article
  15. Review
  16. Article
  17. Review
  18. Review
  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

4 authors at 2 institutions in 1 country.

Shohreh MajdCentre for Neuroscience, Neuronal Injury and Repair Laboratory, School of Medicine, Flinders University of South Australia, Adelaide, SA, 5042, Australia.
John H T PowerDepartment of Human Physiology, School of Medicine, Flinders University of South Australia, Adelaide, SA, Australia.
Simon A KoblarSchool of Medicine, The Queen Elizabeth Hospital (TQEH) Campus, University of Adelaide, Adelaide, SA, Australia.
Hugh J M GranthamCentre for Neuroscience, Neuronal Injury and Repair Laboratory, School of Medicine, Flinders University of South Australia, Adelaide, SA, 5042, Australia.
Flinders University · AUUniversity of Adelaide · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Abnormal tau phosphorylation (p-tau) has been shown after hypoxic damage to the brain associated with traumatic brain injury and stroke. As the level of p-tau is controlled by Glycogen Synthase Kinase (GSK)-3β, Protein Phosphatase 2A (PP2A) and Adenosine Monophosphate Kinase (AMPK), different activity levels of these enzymes could be involved in tau phosphorylation following ischaemia. This study assessed the effects of global brain ischaemia/reperfusion on the immediate status of p-tau in a rat model of cardiac arrest (CA) followed by cardiopulmonary resuscitation (CPR). We reported an early dephosphorylation of tau at its AMPK sensitive residues, Ser(396) and Ser(262) after 2 min of ischaemia, which did not recover during the first two hours of reperfusion, while the tau phosphorylation at GSK-3β sensitive but AMPK insensitive residues, Ser(202) /Thr(205) (AT8), as well as the total amount of tau remained unchanged. Our data showed no alteration in the activities of GSK-3β and PP2A during similar episodes of ischaemia of up to 8 min and reperfusion of up to 2 h, and 4 weeks recovery. Dephosphorylation of AMPK followed the same pattern as tau dephosphorylation during ischaemia/reperfusion. Catalase, another AMPK downstream substrate also showed a similar pattern of decline to p-AMPK, in ischaemic/reperfusion groups. This suggests the involvement of AMPK in changing the p-tau levels, indicating that tau dephosphorylation following ischaemia is not dependent on GSK-3β or PP2A activity, but is associated with AMPK dephosphorylation. We propose that a reduction in AMPK activity is a possible early mechanism responsible for tau dephosphorylation.

Indexed as

AMP-Activated Protein Kinase KinasesAnimalsBrain IschemiaCatalaseFemaleGlycogen Synthase Kinase 3 betaHeart ArrestPhosphorylationProtein KinasesProtein Phosphatase 2Protein Processing, Post-TranslationalRatsRats, Sprague-DawleyReperfusion Injurytau ProteinsAMP-Activated Protein Kinase KinasesCatalaseGlycogen Synthase Kinase 3 betaProtein KinasesProtein Phosphatase 2tau Proteinsadenosine monophosphate kinase proteinglycogen synthase kinase-3βmicrotubule-associated proteinneuronal energy stressphosphorylationprotein phosphatase 2A

Identifiers

PMID27177932
PMCPMC5089632
OpenAlexW2389314332

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.