Evidence map›Paper›PMID 36180206›Full record

ArticleJournal of neurointerventional surgery2023

Poly(2-methoxyethyl acrylate) (PMEA) improves the thromboresistance of FRED flow diverters: a thrombogenic evaluation of flow diverters with human blood under flow conditions.

Keiko Yoshizawa, Hirohisa Kobayashi, Atsushi Kaneki, Mika Takenouchi, John Belletto, Aaron Baldwin, Takao Anzai

Open access · hybridAbstract read
In one paragraph

Article in Journal of neurointerventional surgery, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed, 1 pooled it
3.4field-weighted citation impact, top 6% 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

13 citing papers in PubMed, 1 synthesis or guideline pooled it, 28 citations in OpenAlex.

  1. Short to mid-term outcomes of flow re-direction endoluminal device X (FREDDiagnostic and interventional radiology (Ankara, Turkey) · 2026
    Pooled it
  2. Article
  3. 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
  4. Article
  5. Article
  6. Article
  7. Article
  8. Multicenter analysis of the incidence of in-stent stenosis following the deployment of flow-redirection endoluminal device in the treatment of intracranial aneurysms.Interventional neuroradiology : journal of peritherapeutic neuroradiology, surgical procedures and related neurosciences · 2025
    Article
  9. Article
  10. Article
  11. Article
  12. Intraluminal Flow Diverter Design Primer for Neurointerventionalists.AJNR. American journal of neuroradiology · 2024
    Review
  13. 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

7 authors at 2 institutions in 2 countries.

Keiko YoshizawaCore Technology Group, Corporate R&D Center, Terumo Co., Ltd, Kanagawa, Japan.
Hirohisa KobayashiEvaluation Center, Terumo Co., Ltd, Kanagawa, Japan.
Atsushi KanekiEvaluation Center, Terumo Co., Ltd, Kanagawa, Japan.
Mika TakenouchiEvaluation Center, Terumo Co., Ltd, Kanagawa, Japan.
John BellettoR&D, MicroVention Inc., Terumo Co., Ltd, Aliso Viejo, California, USA.
Aaron BaldwinR&D, MicroVention Inc., Terumo Co., Ltd, Aliso Viejo, California, USA aaron.baldwin@microvention.com.ORCID http://orcid.org/0000-0002-8444-4244
Takao AnzaiCore Technology Group, Corporate R&D Center, Terumo Co., Ltd, Kanagawa, Japan.
Terumo (Japan) · JPTerumo (United States) · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundSurface modification of flow-diverting stents has been explored to reduce thrombus-related complications that may arise under clinical use. This study investigated the thromboresistant properties of the flow redirection endoluminal device (FRED) X, a flow diverter treated with a copolymer of poly(2-methoxyethyl acrylate) (PMEA; X Technology).

methodsThe performance of FRED, FRED X, and Pipeline Flex with Shield Technology (sPED) was evaluated in an in vitro blood loop model. Blood activation level was assessed by the concentration of thrombin-antithrombin complex (TAT), β-thromboglobulin (β-TG), and platelet count, and qualitatively by scanning electron microscopy (SEM). Cellular adhesion characteristics were measured using human aortic endothelial cells that were seeded on flat sheets mimicking the surface of FRED, FRED X, and sPED, and evaluated with fluorescence microscopy. Statistical comparisons were conducted using one-way analysis of variance (ANOVA) with Tukey post hoc tests.

resultsFRED X, sPED, and control blood loops showed significantly reduced blood activation levels (TAT and β-TG) compared with FRED (p<0.01). Consequently, FRED showed a significant decrease in platelet count compared with FRED X, sPED, and control loops (p<0.01). SEM imaging showed the lowest accumulation of blood cell-like deposits on FRED X compared with sPED and FRED, while FRED had the highest accumulation. Endothelial cells adhered and were widely spread on X Technology-treated sheets, while minimal cell adhesion was observed on phosphorylcholine-treated sheets.

conclusionThe X Technology surface modification of FRED X demonstrated superior thromboresistant properties over untreated FRED while maintaining comparable cellular adhesion. Taken together, these properties may help mitigate material-related thromboembolic complications.

Indexed as

Intracranial AneurysmAcrylatesEndothelial CellsHumansPolymersStentsAcrylatespoly(2-methoxyethylacrylate)PolymersAneurysmBlood FlowDeviceFlow DiverterStent

Identifiers

PMID36180206
PMCPMC10511968
OpenAlexW4298132342

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.