Evidence map›Paper›PMID 25122714›Full record

ArticleJournal of neurophysiology2014

Minimum conditions for the induction of cortical spreading depression in brain slices.

Yujie T Tang, Jorge M Mendez, Jeremy J Theriot, Punam M Sawant, Héctor E López-Valdés, Y Sungtaek Ju, K C Brennan

Abstract read
In one paragraph

Article in Journal of neurophysiology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed
2.7field-weighted citation impact, top 10% 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

30 citing papers in PubMed, 52 citations in OpenAlex.

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  12. Malignant astrocyte swelling and impaired glutamate clearance drive the expansion of injurious spreading depolarization foci.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2022
    Article
  13. Action Potentials Are Critical for the Propagation of Focally Elicited Spreading Depolarizations.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2022
    Article
  14. 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 1 country.

Yujie T TangDepartment of Mechanical and Aerospace Engineering and Department of Bioengineering, University of California, Los Angeles, California;
Jorge M MendezDepartment of Neurology, University of Utah, Salt Lake City, Utah; and.
Jeremy J TheriotDepartment of Neurology, University of Utah, Salt Lake City, Utah; and.
Punam M SawantDepartment of Neurology, University of Utah, Salt Lake City, Utah; and.
Héctor E López-ValdésDepartment of Neurology, University of California, Los Angeles, California.
Y Sungtaek JuDepartment of Mechanical and Aerospace Engineering and Department of Bioengineering, University of California, Los Angeles, California;
K C BrennanDepartment of Neurology, University of Utah, Salt Lake City, Utah; and k.c.brennan@hsc.utah.edu.
University of Utah · USUniversity of California, Los Angeles · US

Funding

Sensory plasticity in migraineR01NS085413 · NINDS · UNIVERSITY OF UTAH · PI BRENNAN, KEVIN CHRISTOPHER · 2013 to 2017
$1.7M
Sex differences in the basic pathophysiology of migraineK08NS059072 · NINDS · UNIVERSITY OF UTAH · PI BRENNAN, KEVIN CHRISTOPHER · 2007 to 2011
$859k
Investigating the basic mechanisms linking migraine and strokeR21NS070084 · NINDS · UNIVERSITY OF UTAH · PI BRENNAN, KEVIN CHRISTOPHER · 2010 to 2011
$407k
NINDS NIH HHS NS-059072NINDS NIH HHS NS-070084NINDS NIH HHS R01 NS085413NINDS NIH HHS R21 NS070084
6 · The paper itself

Abstract

Cortical spreading depression (CSD) occurs during various forms of brain injury such as stroke, subarachnoid hemorrhage, and brain trauma, but it is also thought to be the mechanism of the migraine aura. It is therefore expected to occur over a range of conditions including the awake behaving state. Yet it is unclear how such a massive depolarization could occur under relatively benign conditions. Using a microfluidic device with focal stimulation capability in a mouse brain slice model, we varied extracellular potassium concentration as well as the area exposed to increased extracellular potassium to determine the minimum conditions necessary to elicit CSD. Importantly, we focused on potassium levels that are physiologically plausible (≤145 mM; the intracellular potassium concentration). We found a strong correlation between the threshold concentration and the slice area exposed to increased extracellular potassium: minimum area of exposure was needed with the highest potassium concentration, while larger areas were needed at lower concentrations. We also found that moderate elevations of extracellular potassium were able to elicit CSD in relatively small estimated tissue volumes that might be activated under noninjury conditions. Our results thus show that CSD may be inducible under the conditions that expected in migraine aura as well as those related to brain trauma.

Indexed as

AnimalsBrainComputer SimulationCortical Spreading DepressionEquipment DesignExtracellular SpaceIntracellular SpaceMaleMice, Inbred C57BLMicrofluidic Analytical TechniquesModels, NeurologicalOptical ImagingPotassiumTissue Culture TechniquesPotassiumcortical spreading depressionmicrofluidicsmigraine

Identifiers

PMID25122714
PMCPMC4233272
OpenAlexW2150645684

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.