Evidence map›Paper›PMID 26218081›Full record

ArticleScientific reports2015

Comparison of stimulus-evoked cerebral hemodynamics in the awake mouse and under a novel anesthetic regime.

Paul S Sharp, Kira Shaw, Luke Boorman, Samuel Harris, Aneurin J Kennerley, Mimoun Azzouz, Jason Berwick

Erratum issuedOpen access · goldAbstract readComparative Study
In one paragraph

Article in Scientific reports, 2015. 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 30 papers.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed
2.4field-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

30 citing papers in PubMed, 54 citations in OpenAlex.

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  8. High-resolution awake mouse fMRI at 14 Tesla.bioRxiv : the preprint server for biology · 2024
    Article
  9. Mesoscopic mapping of hemodynamic responses and neuronal activity during pharmacologically induced interictal spikes in awake and anesthetized mice.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2024
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  10. Review
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  14. Optical measurement of microvascular oxygenation and blood flow responses in awake mouse cortex during functional activation.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2022
    Article
  15. Article
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  18. Neurovascular coupling preserved in a chronic mouse model of Alzheimer's disease: Methodology is critical.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2020
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

7 authors at 1 institution in 1 country.

Paul S Sharp1] Department of Psychology, University of Sheffield, Sheffield, UK [2] Sheffield Institute for Translational Neuroscience, Department of Neuroscience, University of Sheffield, Sheffield, UK.
Kira ShawDepartment of Psychology, University of Sheffield, Sheffield, UK.
Luke BoormanDepartment of Psychology, University of Sheffield, Sheffield, UK.
Samuel HarrisDepartment of Psychology, University of Sheffield, Sheffield, UK.
Aneurin J KennerleyDepartment of Psychology, University of Sheffield, Sheffield, UK.
Mimoun AzzouzSheffield Institute for Translational Neuroscience, Department of Neuroscience, University of Sheffield, Sheffield, UK.
Jason BerwickDepartment of Psychology, University of Sheffield, Sheffield, UK.
University of Sheffield · GB

Funding

Medical Research Council G1002194
6 · The paper itself

Abstract

Neural activity is closely followed by a localised change in cerebral blood flow, a process termed neurovascular coupling. These hemodynamic changes form the basis of contrast in functional magnetic resonance imaging (fMRI) and are used as a correlate for neural activity. Anesthesia is widely employed in animal fMRI and neurovascular studies, however anesthetics are known to profoundly affect neural and vascular physiology, particularly in mice. Therefore, we investigated the efficacy of a novel 'modular' anesthesia that combined injectable (fentanyl-fluanisone/midazolam) and volatile (isoflurane) anesthetics in mice. To characterize sensory-evoked cortical hemodynamic responses, we used optical imaging spectroscopy to produce functional maps of changes in tissue oxygenation and blood volume in response to mechanical whisker stimulation. Following fine-tuning of the anesthetic regime, stimulation elicited large and robust hemodynamic responses in the somatosensory cortex, characterized by fast arterial activation, increases in total and oxygenated hemoglobin, and decreases in deoxygenated hemoglobin. Overall, the magnitude and speed of evoked hemodynamic responses under anesthesia resembled those in the awake state, indicating that the novel anesthetic combination significantly minimizes the impact of anesthesia. Our findings have broad implications for both neurovascular research and longitudinal fMRI studies that increasingly require the use of genetically engineered mice.

Indexed as

AnesthesiaAnimalsButyrophenonesCerebrovascular CirculationFemaleFentanylHemodynamicsHemoglobinsIsofluraneMagnetic Resonance ImagingMice, Inbred C57BLMidazolamOxygenSomatosensory CortexTime FactorsVibrissaeButyrophenonesFentanylfluanisoneHemoglobinsIsofluraneMidazolamOxygen

Identifiers

PMID26218081
PMCPMC4517464
OpenAlexW2159294632

What OpenQuestion holds

Textmetadata
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.