Evidence map›Paper›PMID 28084873›Full record

ArticleJournal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism2017

Hypothermia revisited: Impact of ischaemic duration and between experiment variability.

Sarah Sj Rewell, Amy L Jeffreys, Steven A Sastra, Susan F Cox, John A Fernandez, Elena Aleksoska, H Bart van der Worp, Leonid Churilov, Malcolm R Macleod, David W Howells

Abstract read
In one paragraph

Article in Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed
–field-weighted citation impact
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

5 citing papers in PubMed.

  1. Selective intra-carotid blood cooling in acute ischemic stroke: A safety and feasibility study in an ovine stroke model.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2021
    Article
  2. Article
  3. Barriers and Advances in Kidney Preservation.BioMed research international · 2018
    Review
  4. Article
  5. 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

10 authors.

Sarah Sj Rewell1 Florey Institute of Neuroscience and Mental Health, Melbourne Brain Centre, Heidelberg, Australia.
Amy L Jeffreys1 Florey Institute of Neuroscience and Mental Health, Melbourne Brain Centre, Heidelberg, Australia.
Steven A Sastra1 Florey Institute of Neuroscience and Mental Health, Melbourne Brain Centre, Heidelberg, Australia.
Susan F Cox1 Florey Institute of Neuroscience and Mental Health, Melbourne Brain Centre, Heidelberg, Australia.
John A Fernandez1 Florey Institute of Neuroscience and Mental Health, Melbourne Brain Centre, Heidelberg, Australia.
Elena Aleksoska1 Florey Institute of Neuroscience and Mental Health, Melbourne Brain Centre, Heidelberg, Australia.
H Bart van der Worp3 Department of Neurology and Neurosurgery, Brain Center Rudolf Magus, University Medical Center Utrecht, Utrecht, The Netherlands.
Leonid Churilov1 Florey Institute of Neuroscience and Mental Health, Melbourne Brain Centre, Heidelberg, Australia.
Malcolm R Macleod4 Department of Clinical Neurosciences, University of Edinburgh, Edinburgh, UK.
David W Howells1 Florey Institute of Neuroscience and Mental Health, Melbourne Brain Centre, Heidelberg, Australia.

Funding

National Centre for the Replacement, Refinement and Reduction of Animals in Research NC/L000970/1
6 · The paper itself

Abstract

To assess the true effect of novel therapies for ischaemic stroke, a positive control that can validate the experimental model and design is vital. Hypothermia may be a good candidate for such a positive control, given the convincing body of evidence from animal models of ischaemic stroke. Taking conditions under which substantial efficacy had been seen in a meta-analysis of hypothermia for focal ischaemia in animal models, we undertook three randomised and blinded studies examining the effect of hypothermia induced immediately following the onset of middle cerebral artery occlusion on infarct volume in rats (n = 15, 23, 264). Hypothermia to a depth of 33℃ and maintained for 130 min significantly reduced infarct volume compared to normothermia treatment (by 27-63%) and depended on ischaemic duration (F(3,244) = 21.242, p < 0.05). However, the protective effect varied across experiments with differences in both the size of the infarct observed in normothermic controls and the time to reach target temperature. Our results highlight the need for sample size and power calculations to take into account variations between individual experiments requiring induction of focal ischaemia.

Indexed as

Hypothermia, InducedProtective FactorsAnimalsBrain InfarctionBrain IschemiaDisease Models, AnimalInfarction, Middle Cerebral ArteryRatsReproducibility of ResultsTemperatureTime Factorsanimal modelshypothermiaischaemic durationIschaemic strokepositive control

Identifiers

PMID28084873
PMCPMC5624387

What OpenQuestion holds

Textmetadata
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.