Evidence map›Paper›PMID 27976678›Full record

ArticleScientific reports2016

Distinct effects of isoflurane on basal BOLD signals in tissue/vascular microstructures in rats.

Tomokazu Tsurugizawa, Yukari Takahashi, Fusao Kato

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed, 1 pooled it
2.6field-weighted citation impact, top 11% 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

23 citing papers in PubMed, 1 synthesis or guideline pooled it, 37 citations in OpenAlex.

  1. Pooled it
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  5. Neuroimaging Model of Visceral Manipulation in an Awake Rat.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2025
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  10. Low neuronal metabolism during isoflurane-induced burst suppression is related to synaptic inhibition while neurovascular coupling and mitochondrial function remain intact.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2021
    Article
  11. Article
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  13. The Vasomotor Response to Dopamine Is Altered in the Rat Model of l-dopa-Induced Dyskinesia.Movement disorders : official journal of the Movement Disorder Society · 2021
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  18. Imaging Functional Recovery Following Ischemic Stroke: Clinical and Preclinical fMRI Studies.Journal of neuroimaging : official journal of the American Society of Neuroimaging · 2020
    Review
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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.

Tomokazu TsurugizawaDepartment of Neuroscience, The Jikei University School of Medicine, 3-25-8, Minato-ku, Tokyo 105-8461, Japan.
Yukari TakahashiDepartment of Neuroscience, The Jikei University School of Medicine, 3-25-8, Minato-ku, Tokyo 105-8461, Japan.
Fusao KatoDepartment of Neuroscience, The Jikei University School of Medicine, 3-25-8, Minato-ku, Tokyo 105-8461, Japan.
Jikei University School of Medicine · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Isoflurane is a well-known volatile anesthetic. However, it remains equivocal whether its effects on BOLD signal differ depending on the types of intracranial structures, such as capillaries and large blood vessels. We compared dose-dependent effect of isoflurane on the basal BOLD signals in distinct cerebral structures (tissue structure or large vessels) using high resolution T2*-images at 9.4 T MRI system in rat somatosensory cortex. The local field potential (LFP) in the somatosensory cortex and mean arterial pressure (MAP) were also investigated. Isoflurane induced inverted U-shaped dose-dependent change in BOLD signal in large vessels and tissue regions: BOLD signal under 2.0% and 2.5% isoflurane significantly increased from the maintenance dose (1.5%) and that under 3.0% was similar to maintenance dose. Remarkably, BOLD signal increase in tissue regions under 2.5% was significantly smaller than that in large vessels. The MAP decreased monotonically due to the dose of isoflurane and the LFP was strongly suppressed under high dose (2.5% and 3.0%). These results indicate that isoflurane-induced alteration of MAP and neuronal activity affected BOLD signal and, especially, BOLD signal in the tissue regions was more affected by the neuronal activity.

Indexed as

Cerebral AngiographyCerebral ArteriesMagnetic Resonance AngiographySomatosensory CortexAnimalsBlood PressureCerebrovascular CirculationDose-Response Relationship, DrugIsofluraneMaleRatsRats, WistarIsoflurane

Identifiers

PMID27976678
PMCPMC5157011
OpenAlexW2562959846

What OpenQuestion holds

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LicenceCC BY
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.