Evidence map›Paper›PMID 26482989›Full record

ArticleJournal of vascular surgery2016

Antithrombin nanoparticles inhibit stent thrombosis in ex vivo static and flow models.

Rohun U Palekar, Chandu Vemuri, Jon N Marsh, Batool Arif, Samuel A Wickline

Open access · bronzeAbstract read
In one paragraph

Article in Journal of vascular surgery, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
0.8field-weighted citation impact, top 25% 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

7 citing papers in PubMed, 13 citations in OpenAlex.

  1. Article
  2. Review
  3. Article
  4. Review
  5. Article
  6. The Future of Nanoparticle-Directed Venous Therapy.Seminars in interventional radiology · 2017
    Review
  7. 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

5 authors at 1 institution in 1 country.

Rohun U PalekarDepartment of Biomedical Engineering, Washington University in St. Louis, St. Louis, Mo.
Chandu VemuriDepartment of Surgery, Washington University in St. Louis, St. Louis, Mo.
Jon N MarshDepartment of Medicine, Washington University in St. Louis, St. Louis, Mo.
Batool ArifDepartment of Surgery, Washington University in St. Louis, St. Louis, Mo.
Samuel A WicklineDepartment of Biomedical Engineering, Washington University in St. Louis, St. Louis, Mo; Department of Medicine, Washington University in St. Louis, St. Louis, Mo. Electronic address: wicklines@aol.com.
Washington University in St. Louis · US

Funding

METHODS IN MOLECULAR IMAGING AND TARGETED THERAPEUTICSR01HL073646 · NHLBI · WASHINGTON UNIVERSITY · PI WICKLINE, SAMUEL A · 2004 to 2016
$13.7M
Translational Research Skills Development CoreU54HL112303 · NHLBI · WASHINGTON UNIVERSITY · PI SADLER, J EVAN · 2012 to 2016
$8.8M
Prevention and Treatment of Acute Kidney InjuryR01DK102691 · NIDDK · WASHINGTON UNIVERSITY · PI WICKLINE, SAMUEL A · 2015 to 2018
$2.0M
THERAPY NANOPARTICLES FOR MODULATION OF INFLAMMATION IN NEUROMUSCULAR DISEASER01AR056223 · NIAMS · WASHINGTON UNIVERSITY · PI WICKLINE, SAMUEL A · 2009 to 2013
$1.6M
QUANTIFYING KIDNEY INJURY AND INFLAMMATION WITH FLUORINE (19F) MRIR21DK095555 · NIDDK · WASHINGTON UNIVERSITY · PI WICKLINE, SAMUEL A · 2012 to 2013
$411k
NHLBI NIH HHS R01 HL073646NHLBI NIH HHS U54 HL112303NIAMS NIH HHS R01 AR056223NIDDK NIH HHS R01 DK102691NIDDK NIH HHS R21 DK095555
6 · The paper itself

Abstract

objectiveDespite significant advances in intravascular stent technology, safe prevention of stent thrombosis over prolonged periods after initial deployment persists as a medical need to decrease device failure. The objective of this project was to assess the potential of perfluorocarbon nanoparticles (NP) conjugated with the direct thrombin inhibitor D-phenylalanyl-L-prolyl-L-arginyl chloromethylketone (PPACK-NP) to inhibit stent thrombosis.

methodsIn a static model of stent thrombosis, 3 × 3-mm pieces of stainless steel coronary stents were cut and adsorbed with thrombin to create a procoagulant surface that would facilitate thrombus development. After treatment with PPACK-NP or control NP, stents were exposed to platelet-poor plasma (PPP) or platelet-rich plasma (PRP) for set time points up to 60 minutes. Measurements of final clot weight in grams were used for assessing the effect of NP treatment on limiting thrombosis. Additionally, groups of stents were exposed to flowing plasma containing various treatments (saline, free PPACK, control NP, and PPACK-NP) and generated thrombi were stained and imaged to investigate the treatment effects of PPACK-NP under flow conditions.

resultsThe static model of stent thrombosis used in this study indicated a significant reduction in thrombus deposition with PPACK-NP treatment (0.00067 ± 0.00026 g; n = 3) compared with control NP (0.0098 ± 0.0015 g; n = 3; P = .026) in PPP. Exposure to PRP demonstrated similar effects with PPACK-NP treatment (0.00033 ± 0.00012 g; n = 3) vs control NP treatment (0.0045 ± 0.00012 g; n = 3; P = .000017). In additional studies, stents were exposed to both PRP pretreated with vorapaxar and PPACK-NP, which illustrated adjunctive benefit to oral platelet inhibitors for prevention of stent thrombosis. Additionally, an in vitro model of stent thrombosis under flow conditions established that PPACK-NP treatment inhibited thrombus deposition on stents significantly.

conclusionsThis study demonstrates that antithrombin perfluorocarbon NPs exert marked focal antithrombin activity to prevent intravascular stent thrombosis and occlusion.

Indexed as

Drug CarriersNanoparticlesStentsAmino Acid Chloromethyl KetonesAntithrombinsBlood CoagulationBlood Flow VelocityCells, CulturedEndothelial CellsFluorocarbonsHumansPercutaneous Coronary InterventionProsthesis DesignStainless SteelSurface PropertiesThrombosisAmino Acid Chloromethyl KetonesAntithrombinsDrug CarriersFluorocarbonsphenylalanyl-prolyl-arginine-chloromethyl ketoneStainless Steel

Identifiers

PMID26482989
PMCPMC4834274
OpenAlexW1780858189

What OpenQuestion holds

Textmetadata
LicenceTDM
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.