Evidence mapPaperPMID 37449587Full record

ArticleJournal of the American Heart Association2023

Isoflurane Conditioning-Induced Delayed Cerebral Ischemia Protection in Subarachnoid Hemorrhage-Role of Inducible Nitric Oxide Synthase.

Meizi Liu, Keshav Jayaraman, Aaron J Norris, Ahmed Hussein, James W Nelson, Jogender Mehla, Deepti Diwan, Ananth Vellimana, Yousef Abu-Amer, Gregory J Zipfel and 1 more

Open access · goldAbstract read
In one paragraph

Article in Journal of the American Heart Association, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed, 1 pooled it
2.1field-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

7 citing papers in PubMed, 1 synthesis or guideline pooled it, 10 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Review
  5. Article
  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
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

11 authors at 2 institutions in 1 country.

Meizi LiuDepartment of Anesthesiology Washington University St. Louis MO USA.ORCID 0000-0002-7633-3384
Keshav JayaramanDepartment of Anesthesiology Washington University St. Louis MO USA.ORCID 0000-0002-5227-7023
Aaron J NorrisDepartment of Anesthesiology Washington University St. Louis MO USA.
Ahmed HusseinDepartment of Neurological Surgery Washington University St. Louis MO USA.
James W NelsonDepartment of Neurological Surgery Washington University St. Louis MO USA.
Jogender MehlaDepartment of Neurological Surgery Washington University St. Louis MO USA.
Deepti DiwanDepartment of Neurological Surgery Washington University St. Louis MO USA.ORCID 0000-0003-3913-8448
Ananth VellimanaDepartment of Neurological Surgery Washington University St. Louis MO USA.
Yousef Abu-AmerDepartment of Orthopedics Washington University St. Louis MO USA.
Gregory J ZipfelDepartment of Neurological Surgery Washington University St. Louis MO USA.
Umeshkumar AthiramanDepartment of Anesthesiology Washington University St. Louis MO USA.ORCID 0000-0002-9086-0607
Washington University in St. Louis · USNeurological Surgery · US

Funding

Molecular mechanisms underlying isoflurane conditioning-induced neurovascular protection in subarachnoid hemorrhageK08NS125038 · WASHINGTON UNIVERSITY · 2025 to 2025
$179k
NINDS NIH HHS K08 NS125038NINDS NIH HHS R01 NS091603
6 · The paper itself

Abstract

Background Recent evidence implicates inflammation as a key driver in delayed cerebral ischemia after aneurysmal subarachnoid hemorrhage (SAH). Inducible nitric oxide synthase (iNOS) is one of the known major mediators of inflammation. We previously showed that an inhalational anesthetic, isoflurane, provides strong protection against delayed cerebral ischemia after SAH. Our current study aims to define the role of iNOS in isoflurane conditioning-induced protection against delayed cerebral ischemia in a mouse model of SAH. Methods and Results The experiments used 10- to 14-week-old male wild-type (C57BL/6) and iNOS global knockout mice. Anesthetic conditioning was initiated 1 hour after SAH with isoflurane 2% for 1 hour. Isoflurane-induced changes in iNOS expression were measured. N-(3-(aminomethyl) benzyl) acetamidine, a highly selective iNOS inhibitor, was injected intraperitoneally immediately after SAH and then daily. Vasospasm, microvessel thrombosis, and neurological assessment was performed. Data were analyzed by 1-way ANOVA and 2-way repeated measures ANOVA followed by Student Newman Keuls comparison test. Statistical significance was set at

Indexed as

Brain IschemiaIsofluraneSubarachnoid HemorrhageVasospasm, IntracranialAmidinesAnimalsCerebral InfarctionMaleMiceMice, Inbred C57BLMice, KnockoutNitric Oxide Synthase Type IIacetamidineAmidinesIsofluraneNitric Oxide Synthase Type IIDCIiNOSisofluraneneurovascular protectionsubarachnoid hemorrhage

Identifiers

PMID37449587
PMCPMC10382105
OpenAlexW4384340063

What Socratic holds

Textmetadata
LicenceCC BY-NC
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 Socratic graph.