Evidence map›Paper›PMID 19293697›Full record

ArticleAnesthesiology2009

Isoflurane inhibits growth but does not cause cell death in hippocampal neural precursor cells grown in culture.

Jeffrey W Sall, Greg Stratmann, Jason Leong, William McKleroy, Daniel Mason, Shanti Shenoy, Samuel J Pleasure, Phillip E Bickler

Open access · bronzeAbstract read
In one paragraph

Article in Anesthesiology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 49 papers.

0numbers the graph read from it
0cells of the map it votes in
49citing papers in PubMed
3.9field-weighted citation impact, top 7% 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

49 citing papers in PubMed, 86 citations in OpenAlex.

  1. Article
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  5. Article
  6. General Anesthetic Use in Fragile X Spectrum Disorders.Journal of neurosurgical anesthesiology · 2019
    Review
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  19. Article
  20. Review: effects of anesthetics on brain circuit formation.Journal of neurosurgical anesthesiology · 2014
    Review
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

8 authors at 2 institutions in 1 country.

Jeffrey W SallDepartment of Anesthesia and Perioperative Care, University of California, San Francisco, USA. sallj@anesthesia.ucsf.edu
Greg Stratmann
Jason Leong
William McKleroy
Daniel Mason
Shanti Shenoy
Samuel J Pleasure
Phillip E Bickler
Marymount University · USUniversity of California, San Francisco · US

Funding

Intracellular signaling in anesthetic and hypoxic preconditioning of neuronsR01GM052212 · NIGMS · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI BICKLER, PHILIP E · 2001 to 2010
$2.4M
Wnt Signaling in Hippocampal and Neocortical DevelopmentK02MH074958 · NIMH · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI PLEASURE, SAMUEL JEREMY · 2005 to 2009
$569k
NIGMS NIH HHS R01 GM052212NIMH NIH HHS K02 MH074958
6 · The paper itself

Abstract

backgroundIsoflurane causes long-term hippocampal-dependent learning deficits in rats despite limited isoflurane-induced hippocampal cell death, raising questions about the causality between isoflurane-induced cell death and isoflurane-induced cognitive function. Neurogenesis in the dentate gyrus is required for hippocampal-dependent learning and thus constitutes a potential alternative mechanism by which cognition can be altered after neonatal anesthesia. The authors tested the hypothesis that isoflurane alters proliferation and differentiation of hippocampal neural progenitor cells.

methodsMultipotent neural progenitor cells were isolated from pooled rat hippocampi (postnatal day 2) and grown in culture. These cells were exposed to isoflurane and evaluated for cell death using lactate dehydrogenase release, caspase activity, and immunocytochemistry for nuclear localization of cleaved caspase 3. Growth was assessed by cell counting and BrdU incorporation. Expression of markers of stemness (Sox2) and cell division (Ki67) were determined by quantitative polymerase chain reaction. Cell fate selection was assessed using immunocytochemistry to stain for neuronal and glial markers.

resultsIsoflurane did not change lactate dehydrogenase release, activity of caspase 3/7, or the amount of nuclear cleaved caspase 3. Isoflurane decreased caspase 9 activity, inhibited proliferation, and decreased the proportion of cells in s-phase. messenger ribonucleic acid expression of Sox2 (stem cells) and Ki67 (proliferation) were decreased. Differentiating neural progenitor cells more often select a neuronal fate after isoflurane exposure.

conclusionsThe authors conclude that isoflurane does not cause cell death, but it does act directly on neural progenitor cells independently of effects on the surrounding brain to decrease proliferation and increase neuronal fate selection. These changes could adversely affect cognition after isoflurane anesthesia.

Indexed as

Anesthetics, InhalationAnimalsAntimetabolitesBromodeoxyuridineCaspasesCell DeathCell DifferentiationCell ProliferationGlial Fibrillary Acidic ProteinHippocampusImmunohistochemistryIsofluraneKi-67 AntigenL-Lactate DehydrogenaseNeuronsPluripotent Stem CellsAnesthetics, InhalationAntimetabolitesBromodeoxyuridineCaspasesGlial Fibrillary Acidic ProteinIsofluraneKi-67 AntigenL-Lactate DehydrogenaseSox2 protein, ratSOXB1 Transcription Factors

Identifiers

PMID19293697
PMCPMC2747751
OpenAlexW2118905657

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.