Evidence map›Paper›PMID 20179498›Full record

ArticleAnesthesiology2010

Noble gas xenon is a novel adenosine triphosphate-sensitive potassium channel opener.

Carsten Bantel, Mervyn Maze, Stefan Trapp

Open access · bronzeAbstract read
In one paragraph

Article in Anesthesiology, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed, 2 pooled it
1.8field-weighted citation impact, top 16% 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

28 citing papers in PubMed, 2 syntheses or guidelines pooled it, 60 citations in OpenAlex.

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  14. Neuroprotective Properties of Xenon.Molecular neurobiology · 2020
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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

3 authors at 1 institution in 1 country.

Carsten BantelDepartment of Surgery and Cancer, Anaesthetics, Pain Medicine and Intensive Care Section, Blackett Laboratory, Imperial College London. London SW7 2AZ, United Kingdom.
Mervyn Maze
Stefan Trapp
Imperial College London · GB

Funding

Medical Research Council G0600928Medical Research Council G0600928(79140)
6 · The paper itself

Abstract

backgroundAdenosine triphosphate-sensitive potassium (KATP) channels in brain are involved in neuroprotective mechanisms. Pharmacologic activation of these channels is seen as beneficial, but clinical exploitation by using classic K channel openers is hampered by their inability to cross the blood-brain barrier. This is different with the inhalational anesthetic xenon, which recently has been suggested to activate KATP channels; it partitions freely into the brain.

methodsTo evaluate the type and mechanism of interaction of xenon with neuronal-type KATP channels, these channels, consisting of Kir6.2 pore-forming subunits and sulfonylurea receptor-1 regulatory subunits, were expressed in HEK293 cells and whole cell, and excised patch-clamp recordings were performed.

resultsXenon, in contrast to classic KATP channel openers, acted directly on the Kir6.2 subunit of the channel. It had no effect on the closely related, adenosine triphosphate (ATP)-regulated Kir1.1 channel and failed to activate an ATP-insensitive mutant version of Kir6.2. Furthermore, concentration-inhibition curves for ATP obtained from inside-out patches in the absence or presence of 80% xenon revealed that xenon reduced the sensitivity of the KATP channel to ATP. This was reflected in an approximately fourfold shift of the concentration causing half-maximal inhibition (IC50) from 26 +/- 4 to 96 +/- 6 microm.

conclusionsXenon represents a novel KATP channel opener that increases KATP currents independently of the sulfonylurea receptor-1 subunit by reducing ATP inhibition of the channel. Through this action and by its ability to readily partition across the blood-brain barrier, xenon has considerable potential in clinical settings of neuronal injury, including stroke.

Indexed as

AlgorithmsAnesthetics, InhalationAnimalsATP-Binding Cassette TransportersCell LineElectrophysiologyHumansKATP ChannelsKcnj11 ChannelMicePatch-Clamp TechniquesPotassium Channels, Inwardly RectifyingReceptors, DrugSulfonylurea ReceptorsTransfectionXenonAnesthetics, InhalationATP-Binding Cassette TransportersKATP ChannelsKcnj11 ChannelPotassium Channels, Inwardly RectifyingReceptors, DrugSulfonylurea ReceptorsXenon

Identifiers

PMID20179498
PMCPMC2935677
OpenAlexW2050038329

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.