Evidence map›Paper›PMID 26494695›Full record

ArticleAJNR. American journal of neuroradiology2016

Preclinical Testing of a Novel Thin Film Nitinol Flow-Diversion Stent in a Rabbit Elastase Aneurysm Model.

Y Ding, D Dai, D F Kallmes, D Schroeder, C P Kealey, V Gupta, A D Johnson, R Kadirvel

Open access · hybridAbstract read
In one paragraph

Article in AJNR. American journal of neuroradiology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed, 3 pooled it
1.1field-weighted citation impact, top 21% 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

9 citing papers in PubMed, 3 syntheses or guidelines pooled it, 15 citations in OpenAlex.

  1. Pooled it
  2. 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
  3. Pooled it
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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

8 authors at 2 institutions in 1 country.

Y DingFrom the Department of Neurointerventional Radiology (Y.D., D.D., D.F.K., D.S., R.K.), Mayo Clinic, Rochester, Minnesota ding.yonghong@mayo.edu.ORCID http://orcid.org/0000-0003-4329-3192
D DaiFrom the Department of Neurointerventional Radiology (Y.D., D.D., D.F.K., D.S., R.K.), Mayo Clinic, Rochester, Minnesota.ORCID http://orcid.org/0000-0003-4051-6450
D F KallmesFrom the Department of Neurointerventional Radiology (Y.D., D.D., D.F.K., D.S., R.K.), Mayo Clinic, Rochester, Minnesota.ORCID http://orcid.org/0000-0002-8495-0040
D SchroederFrom the Department of Neurointerventional Radiology (Y.D., D.D., D.F.K., D.S., R.K.), Mayo Clinic, Rochester, Minnesota.ORCID http://orcid.org/0000-0002-9676-232X
C P KealeyNeuroSigma Inc. (C.P.K., V.G., A.D.J.), Los Angeles, California.ORCID http://orcid.org/0000-0002-0838-8164
V GuptaNeuroSigma Inc. (C.P.K., V.G., A.D.J.), Los Angeles, California.ORCID http://orcid.org/0000-0002-3422-3486
A D JohnsonNeuroSigma Inc. (C.P.K., V.G., A.D.J.), Los Angeles, California.ORCID http://orcid.org/0000-0002-2277-1813
R KadirvelFrom the Department of Neurointerventional Radiology (Y.D., D.D., D.F.K., D.S., R.K.), Mayo Clinic, Rochester, Minnesota.ORCID http://orcid.org/0000-0002-6786-9953
Mayo Clinic in Florida · USNeuroSigma (United States) · US

Funding

Computational and Biological Approach to Flow DiversionR01NS076491 · NINDS · MAYO CLINIC ROCHESTER · PI Juan R Cebral, DAVID F KALLMES · 2011 to 2026
$7.4M
Preclinical Testing of a Novel Flow Diverting Stent for Treating Intracranial AneurysmsR42NS074576 · NINDS · NEUROSIGMA, INC. · PI KALLMES, DAVID F, KEALEY, COLIN PATRICK · 2016 to 2018
$2.9M
Preclinical Testing of a Novel Flow Diverting Stent for the Treatment of IntracraR41NS074576 · NINDS · NEUROSIGMA, INC. · PI JOHNSON, ALFRED DAVID · 2011 to 2013
$683k
NINDS NIH HHS R01 NS076491NINDS NIH HHS R41 NS074576NINDS NIH HHS R42 NS074576
6 · The paper itself

Abstract

background and purposeThin film nitinol can be processed to produce a thin microporous sheet with a low percentage of metal coverage (<20%) and high pore attenuation (∼70 pores/mm(2)) for flow diversion. We present in vivo results from the treatment of experimental rabbit aneurysms by using a thin film nitinol-based flow-diversion device. MATERIALS AND

methodsNineteen aneurysms in the rabbit elastase aneurysm model were treated with a single thin film nitinol flow diverter. Devices were also placed over 17 lumbar arteries to model perianeurysmal branch arteries of the intracranial circulation. Angiography was performed at 2 weeks (n = 7), 1 month (n = 8), and 3 months (n = 4) immediately before sacrifice. Aneurysm occlusion was graded on a 3-point scale (grade I, complete occlusion; grade II, near-complete occlusion; grade III, incomplete occlusion). Toluidine blue staining was used for histologic evaluation. En face CD31 immunofluorescent staining was performed to quantify neck endothelialization.

resultsMarkedly reduced intra-aneurysmal flow was observed on angiography immediately after device placement in all aneurysms. Grade I or II occlusion was noted in 4 (57%) aneurysms at 2-week, in 6 (75%) aneurysms at 4-week, and in 3 (75%) aneurysms at 12-week follow-up. All 17 lumbar arteries were patent. CD31 staining showed that 75% ± 16% of the aneurysm neck region was endothelialized. Histopathology demonstrated incorporation of the thin film nitinol flow diverter into the vessel wall and no evidence of excessive neointimal hyperplasia.

conclusionsIn this rabbit model, the thin film nitinol flow diverter achieved high rates of aneurysm occlusion and promoted tissue in-growth and aneurysm neck healing, even early after implantation.

Indexed as

AlloysAnimalsCerebral AngiographyDisease Models, AnimalEmbolization, TherapeuticIntracranial AneurysmPancreatic ElastaseRabbitsStentsAlloysnitinolPancreatic Elastase

Identifiers

PMID26494695
PMCPMC4792643
OpenAlexW2175102435

What OpenQuestion holds

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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.