Evidence map›Paper›PMID 18840784›Full record

ArticleDiabetes2009

Insulin reduces cerebral ischemia/reperfusion injury in the hippocampus of diabetic rats: a role for glycogen synthase kinase-3beta.

Massimo Collino, Manuela Aragno, Sara Castiglia, Chiara Tomasinelli, Christoph Thiemermann, Giuseppe Boccuzzi, Roberto Fantozzi

Open access · hybridAbstract read
In one paragraph

Article in Diabetes, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 37 papers.

0numbers the graph read from it
0cells of the map it votes in
37citing papers in PubMed
2.2field-weighted citation impact, top 12% 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

37 citing papers in PubMed, 82 citations in OpenAlex.

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  8. Intranasal wnt3a Attenuates Neuronal Apoptosis through Frz1/PIWIL1a/FOXM1 Pathway in MCAO Rats.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2018
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  17. Diabetes Worsens Ischemia-Reperfusion Brain Injury in Rats Through GSK-3β.The American journal of the medical sciences · 2015
    Article
  18. Insulin neuroprotection and the mechanisms.Chinese medical journal · 2015
    Review
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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.

Massimo CollinoDepartment of Anatomy, Pharmacology, and Forensic Medicine, University of Turin, Turin, Italy. massimo.collino@unito.it
Manuela Aragno
Sara Castiglia
Chiara Tomasinelli
Christoph Thiemermann
Giuseppe Boccuzzi
Roberto Fantozzi
University of Turin · ITWilliam Harvey Research Institute · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveThere is evidence that insulin reduces brain injury evoked by ischemia/reperfusion (I/R). However, the molecular mechanisms underlying the protective effects of insulin remain unknown. Insulin is a well-known inhibitor of glycogen synthase kinase-3beta (GSK-3beta). Here, we investigate the role of GSK-3beta inhibition on I/R-induced cerebral injury in a rat model of insulinopenic diabetes. RESEARCH DESIGN AND

methodsRats with streptozotocin-induced diabetes were subjected to 30-min occlusion of common carotid arteries followed by 1 or 24 h of reperfusion. Insulin (2-12 IU/kg i.v.) or the selective GSK-3beta inhibitor TDZD-8 (0.2-3 mg/kg i.v.) was administered during reperfusion.

resultsInsulin or TDZD-8 dramatically reduced infarct volume and levels of S100B protein, a marker of cerebral injury. Both drugs induced phosphorylation of the Ser9 residue, thereby inactivating GSK-3beta in the rat hippocampus. Insulin, but not TDZD-8, lowered blood glucose. The hippocampi of the drug-treated animals displayed reduced oxidative stress at 1 h of reperfusion as shown by the decreased generation of reactive oxygen species and lipid peroxidation. I/R-induced activation of nuclear factor-kappaB was attenuated by both drug treatments. At 24 h of reperfusion, TDZD-8 and insulin significantly reduced plasma levels of tumor necrosis factor-alpha; neutrophil infiltration, measured as myeloperoxidase activity and intercellular-adhesion-molecule-1 expression; and cyclooxygenase-2 and inducible-NO-synthase expression.

conclusionsAcute administration of insulin or TDZD-8 reduced cerebral I/R injury in diabetic rats. We propose that the inhibitory effect on the activity of GSK-3beta contributes to the protective effect of insulin independently of any effects on blood glucose.

Indexed as

AnimalsBlood GlucoseBlotting, WesternBody WeightBrain IschemiaDiabetes Mellitus, ExperimentalEnzyme-Linked Immunosorbent AssayGene ExpressionGlycogen Synthase Kinase 3HippocampusHormonesHypoglycemic AgentsInsulinLipid PeroxidationMaleNF-kappa B4-benzyl-2-methyl-1,2,4-thiadiazolidine-3,5-dioneBlood GlucoseGlycogen Synthase Kinase 3HormonesHypoglycemic AgentsInsulinNF-kappa BThiadiazolesTumor Necrosis Factor-alpha

Identifiers

PMID18840784
PMCPMC2606878
OpenAlexW2114802931

What OpenQuestion holds

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LicenceCC BY-NC-ND
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Registered trials

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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.