Evidence map›Paper›PMID 23443176›Full record

ArticleJournal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism2013

Certain types of iron oxide nanoparticles are not suited to passively target inflammatory cells that infiltrate the brain in response to stroke.

Christoph Harms, Anna Lena Datwyler, Frank Wiekhorst, Lutz Trahms, Randall Lindquist, Eyk Schellenberger, Susanne Mueller, Gunnar Schütz, Farnoosh Roohi, Andreas Ide and 7 more

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, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing 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

14 citing papers in PubMed.

  1. Article
  2. Review
  3. Glyceryl trinitrate for the treatment of ischaemic stroke: Determining efficacy in rodent and ovine species for enhanced clinical translation.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2021
    Article
  4. Article
  5. Plasma protein adsorption on FeInternational journal of nanomedicine · 2019
    Article
  6. Article
  7. Article
  8. In vivo nanoparticle imaging of innate immune cells can serve as a marker of disease severity in a model of multiple sclerosis.Proceedings of the National Academy of Sciences of the United States of America · 2016
    Article
  9. Article
  10. Article
  11. Article
  12. Review
  13. Review
  14. 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

17 authors.

Christoph HarmsDepartment of Experimental Neurology, Center for Stroke Research Berlin, Charité University Medicine, Berlin, Germany.
Anna Lena Datwyler
Frank Wiekhorst
Lutz Trahms
Randall Lindquist
Eyk Schellenberger
Susanne Mueller
Gunnar Schütz
Farnoosh Roohi
Andreas Ide
Martina Füchtemeier
Karen Gertz
Golo Kronenberg
Ulrike Harms
Matthias Endres
Ulrich Dirnagl
Tracy D Farr

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Intravenous administration of iron oxide nanoparticles during the acute stage of experimental stroke can produce signal intensity changes in the ischemic region. This has been attributed, albeit controversially, to the infiltration of iron-laden blood-borne macrophages. The properties of nanoparticles that render them most suitable for phagocytosis is a matter of debate, as is the most relevant timepoint for administration. Both of these questions are examined in the present study. Imaging experiments were performed in mice with 30 minutes of middle cerebral artery occlusion (MCAO). Iron oxide nanoparticles with different charges and sizes were used, and mice received 300 μmol Fe/kg intravenously: either superparamagnetic iron oxide nanoparticles (SPIOs), ultrasmall SPIOs, or very small SPIOs. The particles were administered 7 days before MCAO, at the time of reperfusion, or 72 hours after MCAO. Interestingly, there was no observable signal change in the ischemic brains that could be attributed to iron. Furthermore, no Prussian blue-positive cells were found in the brains or blood leukocytes, despite intense staining in the livers and spleens. This implies that the nanoparticles selected for this study are not phagocytosed by blood-borne leukocytes and do not enter the ischemic mouse brain.

Indexed as

Contrast MediaMagnetite NanoparticlesAnimalsBrainInfarction, Middle Cerebral ArteryLeukocytesMagnetic Resonance ImagingMaleMiceMice, Inbred C57BLParticle SizePhagocytosisContrast MediaMagnetite Nanoparticles

Identifiers

PMID23443176
PMCPMC3652690

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Registered trials

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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.