Evidence map›Paper›PMID 26172285›Full record

ArticleJournal of neuropathology and experimental neurology2015

Sur1-Trpm4 Cation Channel Expression in Human Cerebral Infarcts.

Rupal I Mehta, Cigdem Tosun, Svetlana Ivanova, Natalia Tsymbalyuk, Bolanle M Famakin, Min Seong Kwon, Rudy J Castellani, Volodymyr Gerzanich, J Marc Simard

Abstract read
In one paragraph

Article in Journal of neuropathology and experimental neurology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 67 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
67citing papers in PubMed, 1 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

67 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
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  7. Article
  8. Article
  9. Article
  10. Article
  11. TRP Channels in Stroke.Neuroscience bulletin · 2024
    Review
  12. Review
  13. Metabolite transport across central nervous system barriers.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2024
    Review
  14. Review
  15. Article
  16. Article
  17. Review
  18. Article
  19. Review
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7 more citing papers are in PubMed but not listed here.

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.

Rupal I MehtaFrom the Departments of Pathology (RIM, RJC, JMS), Neurosurgery (SI, NT, MSK, VG, JMS), Neurology (BMF), and Physiology (JMS), University of Maryland School of Medicine, Baltimore, Maryland; and the Department of Molecular Biology and Genetics (CT), Izmir Institute of Technology, Izmir, Turkey.
Cigdem Tosun
Svetlana Ivanova
Natalia Tsymbalyuk
Bolanle M Famakin
Min Seong Kwon
Rudy J Castellani
Volodymyr Gerzanich
J Marc Simard

Funding

Sulfonylurea receptor 1 (SUR1)- A novel therapeutic target in ischemic strokeR01HL082517 · NHLBI · UNIVERSITY OF MARYLAND BALTIMORE · PI SIMARD, J. MARC · 2006 to 2021
$5.6M
Pathological role of the SUR1-regulated NC(Ca-ATP) channel in cortex after subaraR01NS061808 · NINDS · UNIVERSITY OF MARYLAND BALTIMORE · PI SIMARD, J. MARC · 2009 to 2013
$1.6M
Alpha-Endosulfine in Post-Ischemic Neuronal ApoptosisK08NS089830 · NINDS · UNIVERSITY OF ROCHESTER · PI MEHTA, RUPAL I. · 2014 to 2018
$771k
NHLBI NIH HHS HL082517NHLBI NIH HHS R01 HL082517NINDS NIH HHS K08 NS089830NINDS NIH HHS K08NS089830NINDS NIH HHS NS061808NINDS NIH HHS R01 NS061808
6 · The paper itself

Abstract

The nonselective monovalent cation channel transient receptor potential melastatin 4 (Trpm4) is transcriptionally upregulated in neural and vascular cells in animal models of brain infarction. It associates with sulfonylurea receptor 1 (Sur1) to form Sur1-Trpm4 channels, which have critical roles in cytotoxic edema, cell death, blood-brain barrier breakdown, and vasogenic edema. We examined Trpm4 expression in postmortem brain specimens from 15 patients who died within the first 31 days of the onset of focal cerebral ischemia. We found increased Trpm4 protein expression in all cases using immunohistochemistry; transcriptional upregulation was confirmed using in situ hybridization of Trpm4 messenger RNA. Transient receptor potential melastatin 4 colocalized and coassociated with Sur1 within ischemic endothelial cells and neurons. Coexpression of Sur1 and Trpm4 in necrotic endothelial cells was also associated with vasogenic edema indicated by upregulated perivascular tumor necrosis factor, extravasation of serum immunoglobulin G, and associated inflammation. Upregulated Trpm4 protein was present up to 1 month after the onset of cerebral ischemia. In a rat model of middle cerebral artery occlusion stroke, pharmacologic channel blockade by glibenclamide, a selective inhibitor of sulfonylurea receptor, mitigated perivascular tumor necrosis factor labeling. Thus, upregulated Sur1-Trpm4 channels and associated blood-brain barrier disruption and cerebral edema suggest that pharmacologic targeting of this channel may represent a promising therapeutic strategy for the clinical management of patients with cerebral ischemia.

Indexed as

AdultAgedAged, 80 and overAnimalsCerebral InfarctionDisease Models, AnimalFemaleHumansImmunohistochemistryIn Situ HybridizationMaleMiddle AgedRatsRats, WistarSulfonylurea ReceptorsTRPM Cation ChannelsABCC8 protein, humanSulfonylurea ReceptorsTRPM4 protein, humanTRPM Cation Channels

Identifiers

PMID26172285
PMCPMC4620032

What OpenQuestion holds

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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.