Evidence map›Paper›PMID 32522601›Full record

ArticleNeuroscience letters2020

Isoflurane versus sevoflurane for early brain injury and expression of sphingosine kinase 1 after experimental subarachnoid hemorrhage.

Orhan Altay, Hidenori Suzuki, Bilge Nur Altay, Vahit Calisir, Jiping Tang, John H Zhang

Erratum issuedOpen access · greenAbstract read
In one paragraph

Article in Neuroscience letters, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 16 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed, 1 pooled it
3.9field-weighted citation impact, top 5% 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

16 citing papers in PubMed, 1 synthesis or guideline pooled it, 49 citations in OpenAlex.

  1. Pooled it
  2. Observational
  3. Metabolomic and lipidomic pathways in aneurysmal subarachnoid hemorrhage.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2025
    Review
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  6. Conditioning-based therapeutics for aneurysmal subarachnoid hemorrhage - A critical review.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2024
    Review
  7. Article
  8. Review
  9. Article
  10. Review
  11. Article
  12. Article
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors at 3 institutions in 2 countries.

Orhan AltayDepartments of Physiology, Loma Linda University School of Medicine, Loma Linda, USA.
Hidenori SuzukiDepartments of Physiology, Loma Linda University School of Medicine, Loma Linda, USA.
Bilge Nur AltayLokman Hekim University School of Medicine, Ankara, Turkey.
Vahit CalisirDepartment of M.T. Management Engineering-Statistical Analysis Iskenderun Technical University, Iskenderun, Turkey.
Jiping TangDepartments of Physiology, Loma Linda University School of Medicine, Loma Linda, USA.
John H ZhangDepartments of Physiology, Loma Linda University School of Medicine, Loma Linda, USA; Neurosurgery, Loma Linda University School of Medicine, Loma Linda, USA. Electronic address: johnzhang3910@yahoo.com.
Loma Linda University · USİskenderun Technical University · TRLokman Hekim Üniversitesi · TR

Funding

Vascular Biology Core FacilityP01NS082184 · NINDS · LOMA LINDA UNIVERSITY · PI PEARCE, WILLIAM J. · 2014 to 2018
$6.1M
Neurovascular Protection for Subarachnoid HemorrhageR01NS053407 · NINDS · LOMA LINDA UNIVERSITY · PI ZHANG, JOHN H · 2006 to 2010
$1.8M
Neurovascular Protection for Early Brain Injury after SAHR01NS081740 · NINDS · LOMA LINDA UNIVERSITY · PI ZHANG, JOHN H · 2013 to 2017
$1.6M
Mechanisms of G-CSF-Induced NeuroprotectionR01NS060936 · NINDS · LOMA LINDA UNIVERSITY · PI TANG, JIPING · 2009 to 2012
$1.3M
NINDS NIH HHS P01 NS082184NINDS NIH HHS R01 NS053407NINDS NIH HHS R01 NS060936NINDS NIH HHS R01 NS081740
6 · The paper itself

Abstract

The first step to treat aneurysmal subarachnoid hemorrhage (SAH) is aneurysmal obliteration under general anesthesia but not treat the SAH itself and the secondary effects. However, the identification of anesthetics with properties that help to attenuate post-SAH brain injury can be useful for improving outcomes of SAH patients. We examined whether 2% isoflurane and 3% sevoflurane posttreatment are protective against early brain injury (EBI) after SAH. This study used 87 8-week-old male CD-1 mice. We induced SAH by endovascular perforation in mice. Animals were randomly divided into 4 groups: sham-operated (n = 16), SAH + vehicle-medical air (n = 26), SAH + 2% isoflurane (n = 22), and SAH + 3% sevoflurane (n = 23). Neurobehavioral function, brain water content and Western blotting were evaluated at 24 h. The expression of sphingosine kinase (SphK), cleaved caspase-3 and cyclooxygenase-2 (COX2) was determined by Western blotting. Cell death was examined by terminal deoxynucleotidyl transferase-mediated uridine 5'-triphosphate-biotin nick end-labeling staining. Both 2% isoflurane and 3% sevoflurane significantly improved neurobehavioral function, and brain edema at 24 h after SAH and attenuated cell death, associated with an increase in SphK1, a decrease in cleaved caspase-3 and COX2. The neuroprotective effects were similar between 2% isoflurane and 3% sevoflurane. These findings suggest that both 2% isoflurane and 3% sevoflurane significantly inhibited EBI by suppressing post-SAH apoptosis and brain inflammation possibly via the SphK1-related pathway.

Indexed as

AnimalsApoptosisBrain EdemaDisease Models, AnimalIsofluraneMaleMiceNeuroprotective AgentsPhosphotransferases (Alcohol Group Acceptor)Recovery of FunctionSevofluraneSphingosine KinaseSubarachnoid HemorrhageIsofluraneNeuroprotective AgentsPhosphotransferases (Alcohol Group Acceptor)SevofluraneSphingosine KinaseSphk1 protein, mouseEarly brain injuryIsofluraneSevofluraneSphingosine kinase-1Subarachnoid hemorrhage

Identifiers

PMID32522601
PMCPMC7351136
OpenAlexW3033640988

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.