Evidence map›Paper›PMID 27799376›Full record

ArticleJournal of neurointerventional surgery2017

Thrombogenicity of flow diverters in an ex vivo shunt model: effect of phosphorylcholine surface modification.

Matthew W Hagen, Gaurav Girdhar, John Wainwright, Monica T Hinds

Open access · hybridAbstract read
In one paragraph

Article in Journal of neurointerventional surgery, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 49 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
49citing papers in PubMed, 5 pooled it
7.4field-weighted citation impact, top 2% 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

49 citing papers in PubMed, 5 syntheses or guidelines pooled it, 92 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Treatment of ruptured intracranial aneurysms using the novel generation of flow-diverters with surface modification: A systematic review and meta-analysis.Interventional neuroradiology : journal of peritherapeutic neuroradiology, surgical procedures and related neurosciences · 2024
    Pooled it
  4. Pooled it
  5. Large animals in neurointerventional research: A systematic review on models, techniques and their application in endovascular procedures for stroke, aneurysms and vascular malformations.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2019
    Pooled it
  6. Trial
  7. Review
  8. Angiographic and clinical outcomes from 396 aneurysms treated with the pipeline flex embolization device with shield technology.Interventional neuroradiology : journal of peritherapeutic neuroradiology, surgical procedures and related neurosciences · 2026
    Article
  9. Article
  10. Early clinical experience with the new generation Pipeline Vantage flow diverter in the treatment of unruptured saccular aneurysms using short-term dual antiplatelet therapy.Interventional neuroradiology : journal of peritherapeutic neuroradiology, surgical procedures and related neurosciences · 2026
    Article
  11. Article
  12. Flow diverter surface modifications for aneurysm treatment: A review of the mechanisms and data behind existing technologies.Interventional neuroradiology : journal of peritherapeutic neuroradiology, surgical procedures and related neurosciences · 2026
    Review
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Thrombogenicity of biodegradable metals.Bioactive materials · 2024
    Article
  19. Article
  20. Biomimetic polymers with phosphorylcholine groups as biomaterials for medical devices.Proceedings of the Japan Academy. Series B, Physical and biological sciences · 2024
    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

4 authors at 2 institutions in 1 country.

Matthew W HagenDepartment of Biomedical Engineering, Oregon Health & Science University, Portland, Oregon, USA.ORCID http://orcid.org/0000-0002-9812-2262
Gaurav GirdharNeurovascular R&D, Medtronic, Irvine, California, USA.
John WainwrightNeurovascular R&D, Medtronic, Irvine, California, USA.
Monica T HindsDepartment of Biomedical Engineering, Oregon Health & Science University, Portland, Oregon, USA.
Medtronic (United States) · USOregon Health & Science University · US

Funding

Upgrade of confocal microscopy at the Oregon National Primate Research CenterP51OD011092 · OD · OREGON HEALTH & SCIENCE UNIVERSITY · PI Bonnie J. Nagel · 2012 to 2026
$203.9M
NIH HHS P51 OD011092
6 · The paper itself

Abstract

backgroundFlow diverters offer a promising treatment for cerebral aneurysms. However, they have associated thromboembolic risks, mandating chronic dual antiplatelet therapy (DAPT). Shield Technology is a phosphorylcholine surface modification of the Pipeline Embolization Device (PED) flow diverter, which has shown significant reductions in material thrombogenicity in vitro.

objectiveTo compare the thrombogenicity of PED, PED with Shield Technology (PED+Shield), and the Flow-Redirection Endoluminal Device (FRED)-with and without single antiplatelet therapy and DAPT-under physiological flow.

methodsAn established non-human primate ex vivo arteriovenous shunt model of stent thrombosis was used. PED, PED+Shield, and FRED were tested without antiplatelet therapy, with acetylsalicylic acid (ASA) monotherapy, and with DAPT. Radiolabeled platelet deposition was quantified over 1 hour for each device and total fibrin deposition was also quantified.

resultsCumulative statistical analysis showed significantly lower platelet deposition on PED compared with FRED. The same statistical model showed significant decreases in platelet deposition when ASA, clopidogrel, or Shield Technology was used. Direct comparisons of device performances within antiplatelet conditions showed consistent significant decreases in platelet accumulation on PED+Shield relative to FRED. PED+Shield showed significant reductions in platelet deposition compared with unmodified PED without antiplatelet therapy and with DAPT. PED accumulated minimal fibrin with and without Shield Technology.

conclusionsIn this preclinical model, we have shown that the Shield Technology phosphorylcholine modification reduces the platelet-specific thrombogenicity of a flow diverter under physiologically relevant flow with and without DAPT. We have further identified increased fibrin-driven thrombogenicity associated with FRED relative to PED.

Indexed as

PhosphorylcholineStentsAnimalsArteriovenous Shunt, SurgicalAspirinClopidogrelEmbolization, TherapeuticIntracranial AneurysmIntracranial ThrombosisMalePapio anubisPlatelet AggregationSurface PropertiesTiclopidineAspirinClopidogrelPhosphorylcholineTiclopidineAneurysmFlow DiverterPlateletsStenosisTechnology

Identifiers

PMID27799376
PMCPMC5629931
OpenAlexW2540715506

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.