Evidence map›Paper›PMID 30458358›Full record

ArticleBiomaterials2019

Active wrinkles to drive self-cleaning: A strategy for anti-thrombotic surfaces for vascular grafts.

Luka Pocivavsek, Sang-Ho Ye, Joseph Pugar, Edith Tzeng, Enrique Cerda, Sachin Velankar, William R Wagner

Abstract read
In one paragraph

Article in Biomaterials, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing 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

17 citing papers in PubMed.

  1. Review
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  9. Topographic de-adhesion in the viscoelastic limit.Journal of the Royal Society, Interface · 2023
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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

7 authors.

Luka PocivavsekDepartment of Surgery, The University of Chicago, Chicago, IL, 60637, USA. Electronic address: Luka.Pocivavsek@uchospitals.edu.
Sang-Ho YeDepartment of Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA, 15213, USA; McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA 15219, USA.
Joseph PugarDepartment of Chemical Engineering, University of Pittsburgh, Pittsburgh, PA, 15213, USA.
Edith TzengDepartment of Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA, 15213, USA.
Enrique CerdaDepartment of Physics, Universidad de Santiago de Chile, Santiago, Chile.
Sachin VelankarDepartment of Chemical Engineering, University of Pittsburgh, Pittsburgh, PA, 15213, USA; Department of Mechanical Engineering, University of Pittsburgh, Pittsburgh, PA, 15213, USA. Electronic address: velankar@pitt.edu.
William R WagnerDepartment of Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA, 15213, USA; Department of Chemical Engineering, University of Pittsburgh, Pittsburgh, PA, 15213, USA; McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA 15219, USA.

Funding

Engineering Biologic Topography into Vascular GraftsR56HL142743 · NHLBI · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI TZENG, EDITH · 2018 to 2018
$455k
NHLBI NIH HHS R56 HL142743
6 · The paper itself

Abstract

The inner surfaces of arteries and veins are naturally anti-thrombogenic, whereas synthetic materials placed in blood contact commonly experience thrombotic deposition that can lead to device failure or clinical complications. Presented here is a bioinspired strategy for self-cleaning anti-thrombotic surfaces using actuating surface topography. As a first test, wrinkled polydimethylsiloxane planar surfaces are constructed that can repeatedly transition between smooth and wrinkled states. When placed in contact with blood, these surfaces display markedly less platelet deposition than control samples. Second, for the specific application of prosthetic vascular grafts, the potential of using pulse pressure, i.e. the continual variation of blood pressure between systole and diastole, to drive topographic actuation was investigated. Soft cylindrical tubes with a luminal surface that transitioned between smooth and wrinkled states were constructed. Upon exposure to blood under continual pressure pulsation, these cylindrical tubes also showed reduced platelet deposition versus control samples under the same fluctuating pressure conditions. In both planar and cylindrical cases, significant reductions in thrombotic deposition were observed, even when the wrinkles had wavelengths of several tens of μm, far larger than individual platelets. We speculate that the observed thrombo-resistance behavior is attributable to a biofilm delamination process in which the bending energy within the biofilm overcomes interfacial adhesion. This novel strategy to reduce thrombotic deposition may be applicable to several types of medical devices placed into the circulatory system, particularly vascular grafts.

Indexed as

Biocompatible MaterialsBlood Vessel ProsthesisDimethylpolysiloxanesEquipment DesignHumansPlatelet AdhesivenessPulsatile FlowSurface PropertiesThrombosisbaysilonBiocompatible MaterialsDimethylpolysiloxanesActive surfacesBiofoulingDynamic topographyPlatelet depositionPulsatile flowThrombosis

Identifiers

PMID30458358
PMCPMC7248685

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.