Evidence map›Paper›PMID 29023577›Full record

ArticlePloS one2017

Sevoflurane protects rat brain endothelial barrier structure and function after hypoxia-reoxygenation injury.

Tanja Restin, Marie-Elisabeth Kajdi, Martin Schläpfer, Birgit Roth Z'graggen, Christa Booy, Claudia Dumrese, Beatrice Beck-Schimmer

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2017. 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
2.3field-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

15 citing papers in PubMed, 62 citations in OpenAlex.

  1. Review
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  3. The duration-dependent and sex-specific effects of neonatal sevoflurane exposure on cognitive function in rats.Brazilian journal of medical and biological research = Revista brasileira de pesquisas medicas e biologica · 2024
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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 1 institution in 2 countries.

Tanja RestinInstitute of Anesthesiology, University Hospital Zurich, Zurich, Switzerland.ORCID http://orcid.org/0000-0002-8816-6069
Marie-Elisabeth KajdiInstitute of Physiology, Zurich Centre for Integrative Human Physiology, University of Zurich, Zurich, Switzerland.
Martin SchläpferInstitute of Anesthesiology, University Hospital Zurich, Zurich, Switzerland.
Birgit Roth Z'graggenInstitute of Physiology, Zurich Centre for Integrative Human Physiology, University of Zurich, Zurich, Switzerland.
Christa BooyInstitute of Physiology, Zurich Centre for Integrative Human Physiology, University of Zurich, Zurich, Switzerland.
Claudia DumreseFlow Cytometry Facility, University of Zurich, Zurich, Switzerland.
Beatrice Beck-SchimmerInstitute of Anesthesiology, University Hospital Zurich, Zurich, Switzerland.
University of Zurich · CH

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundAfter cerebral injury blood-brain barrier disruption significantly impairs brain homeostasis. Volatile anesthetics have been shown to be protective in ischemia-reperfusion injury scenarios. Their impact on brain endothelial cells after hypoxia-reoxygenation (H/R) has not yet been studied in detail.

methodsRat brain endothelial cells (RBE4) were exposed to severe hypoxia and reoxygenated in air in the presence or absence of sevoflurane. Changes in dextran permeability and architecture of the cellular junctional proteins ZO-1 and β-catenin were measured. To determine necrosis and apoptosis rate DNA content, LDH release and caspase activity were quantified. The role of vascular endothelial growth factor (VEGF) as an inflammatory mediator increasing vascular permeability was assessed. At the same time, it was evaluated if sevoflurane effects are mediated through VEGF. Results were analyzed by unpaired t-tests or one way-analysis of variance followed by Bonferroni's correction.

resultsH/R led to a 172% increase in permeability (p<0.001), cell swelling and qualitatively but not quantitatively modified expression of ZO-1, β-catenin and F-actin. In the presence of sevoflurane during reoxygenation, barrier function improved by 96% (p = 0.042) in parallel to a decrease of the cell size and less re-arranged junction proteins and F-actin. Sevoflurane-induced improvement of the barrier function could not be explained on the level of necrosis or apoptosis as they remained unchanged independent of the presence or absence of the volatile anesthetic. Increased expression of VEGF after H/R was attenuated by sevoflurane by 34% (p = 0.004). Barrier protection provided by sevoflurane was similar to the application of a blocking VEGF-antibody. Furthermore, the protective effect of sevoflurane was abolished in the presence of recombinant VEGF.

conclusionsIn H/R-induced rat brain endothelial cell injury sevoflurane maintains endothelial barrier function through downregulation of VEGF, which is a key player not only in mediating injury, but also with regard to the protective effect of sevoflurane.

Indexed as

AnimalsApoptosisBrainCell Membrane PermeabilityCells, CulturedEndothelium, VascularHypoxiaMethyl EthersOxygenPlatelet Aggregation InhibitorsProtective AgentsRatsReperfusion InjurySevofluraneMethyl EthersOxygenPlatelet Aggregation InhibitorsProtective AgentsSevoflurane

Identifiers

PMID29023577
PMCPMC5638245
OpenAlexW2763996858

What OpenQuestion holds

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LicenceCC BY
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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.