Evidence map›Paper›PMID 33476892›Full record

ArticleBiomaterials2021

Mechanical, compositional and morphological characterisation of the human male urethra for the development of a biomimetic tissue engineered urethral scaffold.

Eoghan M Cunnane, Niall F Davis, Connor V Cunnane, Katherine L Lorentz, Alan J Ryan, Jochen Hess, Justin S Weinbaum, Michael T Walsh, Fergal J O'Brien, David A Vorp

Open access · greenAbstract read
In one paragraph

Article in Biomaterials, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
9.7field-weighted citation impact, top 1% 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

20 citing papers in PubMed, 58 citations in OpenAlex.

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  18. [Research advances of three-dimensional bioprinting technology in urinary system tissue engineering].Sheng wu yi xue gong cheng xue za zhi = Journal of biomedical engineering = Shengwu yixue gongchengxue zazhi · 2022
    Review
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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

10 authors at 4 institutions in 3 countries.

Eoghan M CunnaneDepartment of Bioengineering, University of Pittsburgh, Pittsburgh, PA, United States; Tissue Engineering Research Group, Deptartment of Anatomy & Regenerative Medicine, Royal College of Surgeons in Ireland (RCSI), Dublin, Ireland.
Niall F DavisTissue Engineering Research Group, Deptartment of Anatomy & Regenerative Medicine, Royal College of Surgeons in Ireland (RCSI), Dublin, Ireland; Department of Urology, Beaumont Hospital, Dublin, Ireland.
Connor V CunnaneSchool of Engineering, Health Research Institute and the Bernal Institute, University of Limerick, Limerick, Ireland.
Katherine L LorentzDepartment of Bioengineering, University of Pittsburgh, Pittsburgh, PA, United States.
Alan J RyanTissue Engineering Research Group, Deptartment of Anatomy & Regenerative Medicine, Royal College of Surgeons in Ireland (RCSI), Dublin, Ireland.
Jochen HessDepartment of Urology, University Hospital Essen, University Duisburg-Essen, Essen, Germany.
Justin S WeinbaumDepartment of Bioengineering, University of Pittsburgh, Pittsburgh, PA, United States; McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA, United States; Department of Pathology, University of Pittsburgh, Pittsburgh, PA, United States.
Michael T WalshSchool of Engineering, Health Research Institute and the Bernal Institute, University of Limerick, Limerick, Ireland.
Fergal J O'BrienTissue Engineering Research Group, Deptartment of Anatomy & Regenerative Medicine, Royal College of Surgeons in Ireland (RCSI), Dublin, Ireland; Trinity Centre for Biomedical Engineering, Trinity College Dublin (TCD), Dublin, Ireland; Advanced Materials and Bioengineering Research Centre (AMBER), RCSI and TCD, Dublin, Ireland.
David A VorpDepartment of Bioengineering, University of Pittsburgh, Pittsburgh, PA, United States; McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA, United States; Department of Surgery, University of Pittsburgh, Pittsburgh, PA, United States; Department of Cardiothoracic Surgery, University of Pittsburgh, Pittsburgh, PA, United States; Department of Chemical and Petroleum Engineering, University of Pittsburgh, PA, United States; Center for Vascular Remodeling and Regeneration, University of Pittsburgh, Pittsburgh, PA, United States; The Clinical & Translational Sciences Institute, University of Pittsburgh, Pittsburgh, PA, United States. Electronic address: vorp@pitt.edu.
Royal College of Surgeons in Ireland · IEUniversity of Pittsburgh · USUniversity of Limerick · IEUniversity of Duisburg-Essen · DE

Funding

Artificial Stem Cells for Vascular Tissue EngineeringR01HL130077 · NHLBI · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI VORP, DAVID ALAN · 2016 to 2019
$1.5M
NHLBI NIH HHS R01 HL130077
6 · The paper itself

Abstract

This study addresses a crucial gap in the literature by characterising the relationship between urethral tissue mechanics, composition and gross structure. We then utilise these data to develop a biomimetic urethral scaffold with physical properties that more accurately mimic the native tissue than existing gold standard scaffolds; small intestinal submucosa (SIS) and urinary bladder matrix (UBM). Nine human urethra samples were mechanically characterised using pressure-diameter and uniaxial extension testing. The composition and gross structure of the tissue was determined using immunohistological staining. A pressure stiffening response is observed during the application of intraluminal pressure. The elastic and viscous tissue responses to extension are free of regional or directional variance. The elastin and collagen content of the tissue correlates significantly with tissue mechanics. Building on these data, a biomimetic urethral scaffold was fabricated from collagen and elastin in a ratio that mimics the composition of the native tissue. The resultant scaffold is comprised of a dense inner layer and a porous outer layer that structurally mimic the submucosa and corpus spongiosum layers of the native tissue, respectively. The porous outer layer facilitated more uniform cell infiltration relative to SIS and UBM when implanted subcutaneously (p < 0.05). The mechanical properties of the biomimetic scaffold better mimic the native tissue compared to SIS and UBM. The tissue characterisation data presented herein paves the way for the development of biomimetic urethral grafts, and the novel scaffold we develop demonstrates positive findings that warrant further in vivo evaluation.

Indexed as

BiomimeticsUrethraCollagenHumansMaleTissue EngineeringTissue ScaffoldsCollagenCollagen-elastin scaffoldMechanical propertiesSubcutaneous implantTissue characterisationUrethral tissue

Identifiers

PMID33476892
PMCPMC7906240
OpenAlexW3121046601

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.