Evidence map›Paper›PMID 26016889›Full record

ArticleJournal of neurochemistry2015

The mechanistic target of rapamycin (mTOR) pathway and S6 Kinase mediate diazoxide preconditioning in primary rat cortical neurons.

Somhrita Dutta, Ibolya Rutkai, Prasad V G Katakam, David W Busija

Open access · bronzeAbstract readComparative Study
In one paragraph

Article in Journal of neurochemistry, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
1.8field-weighted citation impact, top 17% 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

15 citing papers in PubMed, 26 citations in OpenAlex.

  1. Review
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  6. Detrimental effects of transient cerebral ischemia on middle cerebral artery mitochondria in female rats.American journal of physiology. Heart and circulatory physiology · 2022
    Article
  7. Dysregulation of mTOR Signaling after Brain Ischemia.International journal of molecular sciences · 2022
    Review
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  14. Article
  15. HRP-3 protects the hepatoma cells from glucose deprivation-induced apoptosis.International journal of clinical and experimental pathology · 2015
    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

4 authors at 1 institution in 1 country.

Somhrita DuttaNeuroscience Program, Tulane University School of Science and Engineering, New Orleans, Louisiana, USA.
Ibolya RutkaiDepartment of Pharmacology, Tulane University School of Medicine, New Orleans, Louisiana, USA.
Prasad V G KatakamNeuroscience Program, Tulane University School of Science and Engineering, New Orleans, Louisiana, USA.
David W BusijaNeuroscience Program, Tulane University School of Science and Engineering, New Orleans, Louisiana, USA.
Tulane University · US

Funding

Mitochondrial Influences on Cerebral ArteriesR01HL093554 · NHLBI · WAKE FOREST UNIVERSITY HEALTH SCIENCES · PI BUSIJA, DAVID W · 2009 to 2018
$3.3M
Potassium Channel Dysfunction in Cerebral ArteriesR01HL077731 · NHLBI · WAKE FOREST UNIVERSITY HEALTH SCIENCES · PI BUSIJA, DAVID W · 2004 to 2013
$3.2M
REGULATION OF CEREBRAL BLOOD FLOWR01HL030260 · NHLBI · WAKE FOREST UNIVERSITY HEALTH SCIENCES · PI BUSIJA, DAVID W · 1986 to 2010
$2.9M
Endothelial Dysfunction in Insulin ResistanceR01HL065380 · NHLBI · WAKE FOREST UNIVERSITY HEALTH SCIENCES · PI BUSIJA, DAVID W · 2002 to 2010
$2.5M
Cerebrovascular Dysfunction in Insulin ResistanceR01DK062372 · NIDDK · WAKE FOREST UNIVERSITY HEALTH SCIENCES · PI BUSIJA, DAVID W · 2002 to 2004
$885k
NHLBI NIH HHS HL-077731NHLBI NIH HHS HL093554NHLBI NIH HHS R01 HL030260NHLBI NIH HHS R01 HL065380NHLBI NIH HHS R01 HL077731NHLBI NIH HHS R01 HL093554NIDDK NIH HHS R01 DK062372
6 · The paper itself

Abstract

We examined the role of the mechanistic target of rapamycin (mTOR) pathway in delayed diazoxide (DZ)-induced preconditioning of cultured rat primary cortical neurons. Neurons were treated for 3 days with 500 μM DZ or feeding medium and then exposed to 3 h of continuous normoxia in Dulbecco's modified eagle medium with glucose or with 3 h of oxygen-glucose deprivation (OGD) followed by normoxia and feeding medium. The OGD decreased viability by 50%, depolarized mitochondria, and reduced mitochondrial respiration, whereas DZ treatment improved viability and mitochondrial respiration, and suppressed reactive oxygen species production, but did not restore mitochondrial membrane potential after OGD. Neuroprotection by DZ was associated with increased phosphorylation of protein kinase B (Akt), mTOR, and the major mTOR downstream substrate, S6 Kinase (S6K). The mTOR inhibitors rapamycin and Torin-1, as well as S6K-targeted siRNA abolished the protective effects of DZ. The effects of DZ on mitochondrial membrane potential and reactive oxygen species production were not affected by rapamycin. Preconditioning with DZ also changed mitochondrial and non-mitochondrial oxygen consumption rates. We conclude that in addition to reducing reactive oxygen species (ROS) production and mitochondrial membrane depolarization, DZ protects against OGD by activation of the Akt-mTOR-S6K pathway and by changes in mitochondrial respiration. Ischemic strokes have limited therapeutic options. Diazoxide (DZ) preconditioning can reduce neuronal damage. Using oxygen-glucose deprivation (OGD), we studied Akt/mTOR/S6K signaling and mitochondrial respiration in neuronal preconditioning. We found DZ protects neurons against OGD via the Akt/mTOR/S6K pathway and alters the mitochondrial and non-mitochondrial oxygen consumption rate. This suggests that the Akt/mTOR/S6k pathway and mitochondria are novel stroke targets.

Indexed as

Ischemic PreconditioningAnimalsCells, CulturedCerebral CortexCulture MediaDiazoxideEnzyme ActivationIn Vitro TechniquesMembrane Potential, MitochondrialMitochondriaNerve Tissue ProteinsNeuronsOxygenOxygen ConsumptionPhosphorylationPrimary Cell CultureAkt1 protein, ratCulture MediaDiazoxidemTOR protein, ratNerve Tissue ProteinsOxygenProto-Oncogene Proteins c-aktReactive Oxygen SpeciesRibosomal Protein S6 KinasesRNA, Small InterferingSirolimusTOR Serine-Threonine Kinasesdiazoxide preconditioningischemic strokemTOR pathwayoxygen glucose deprivationrapamycinS6 Kinase

Identifiers

PMID26016889
PMCPMC5667543
OpenAlexW1839494365

What OpenQuestion holds

Textmetadata
LicenceTDM
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.