Evidence map›Paper›PMID 24917031›Full record

ArticleBiomaterials2014

The use of bi-layer silk fibroin scaffolds and small intestinal submucosa matrices to support bladder tissue regeneration in a rat model of spinal cord injury.

Yeun Goo Chung, Khalid Algarrahi, Debra Franck, Duong D Tu, Rosalyn M Adam, David L Kaplan, Carlos R Estrada, Joshua R Mauney

Open access · greenAbstract read
In one paragraph

Article in Biomaterials, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers.

0numbers the graph read from it
0cells of the map it votes in
32citing papers in PubMed
5.3field-weighted citation impact, top 4% 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

32 citing papers in PubMed, 59 citations in OpenAlex.

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  17. Scaffolding kidney organoids on silk.Journal of tissue engineering and regenerative medicine · 2019
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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.

Yeun Goo ChungUrological Diseases Research Center, Boston Children's Hospital, Boston, MA 02115, USA.
Khalid AlgarrahiUrological Diseases Research Center, Boston Children's Hospital, Boston, MA 02115, USA.
Debra FranckUrological Diseases Research Center, Boston Children's Hospital, Boston, MA 02115, USA.
Duong D TuUrological Diseases Research Center, Boston Children's Hospital, Boston, MA 02115, USA; Department of Surgery, Harvard Medical School, Boston, MA 02115, USA.
Rosalyn M AdamUrological Diseases Research Center, Boston Children's Hospital, Boston, MA 02115, USA; Department of Surgery, Harvard Medical School, Boston, MA 02115, USA.
David L KaplanDepartment of Biomedical Engineering, Tufts University, Medford, MA 02155, USA.
Carlos R EstradaUrological Diseases Research Center, Boston Children's Hospital, Boston, MA 02115, USA; Department of Surgery, Harvard Medical School, Boston, MA 02115, USA. Electronic address: carlos.estrada@childrens.harvard.edu.
Joshua R MauneyUrological Diseases Research Center, Boston Children's Hospital, Boston, MA 02115, USA; Department of Surgery, Harvard Medical School, Boston, MA 02115, USA. Electronic address: joshua.mauney@childrens.harvard.edu.
Boston Children's Hospital · USTufts University · US

Funding

Translational Bioreactors - Engineering Complex TissuesP41EB002520 · NIBIB · TUFTS UNIVERSITY MEDFORD · PI KAPLAN, DAVID L. · 2004 to 2018
$16.7M
Urethral Tissue BioengineeringP50DK065298 · NIDDK · CHILDREN'S HOSPITAL BOSTON · PI ADAM, ROSALYN M · 2003 to 2012
$9.8M
Research Training in Pediatric Urology/CHB T32T32DK060442 · NIDDK · CHILDREN'S HOSPITAL BOSTON · PI ADAM, ROSALYN M · 2002 to 2023
$2.5M
Cholesterol and Prostate HealthR01DK087806 · NIDDK · CEDARS-SINAI MEDICAL CENTER · PI FREEMAN, MICHAEL R · 2011 to 2015
$1.9M
Novel Strategies in Bladder Tissue Engineering: Stem Cells and Silk BiomaterialsR00DK083616 · NIDDK · BOSTON CHILDREN'S HOSPITAL · PI MAUNEY, JOSHUA ROBERT · 2012 to 2014
$639k
NIBIB NIH HHS P41 EB002520NIDDK NIH HHS P50 DK065298NIDDK NIH HHS R00 DK083616NIDDK NIH HHS R00 DK083616-01A2NIDDK NIH HHS R01 DK087806NIDDK NIH HHS T32 DK060442NIDDK NIH HHS T32-DK60442
6 · The paper itself

Abstract

Adverse side-effects associated with enterocystoplasty for neurogenic bladder reconstruction have spawned the need for the development of alternative graft substitutes. Bi-layer silk fibroin (SF) scaffolds and small intestinal submucosa (SIS) matrices were investigated for their ability to support bladder tissue regeneration and function in a rat model of spinal cord injury (SCI). Bladder augmentation was performed with each scaffold configuration in SCI animals for 10 wk of implantation and compared to non-augmented control groups (normal and SCI alone). Animals subjected to SCI alone exhibited a 72% survival rate (13/18) while SCI rats receiving SIS and bi-layer SF scaffolds displayed respective survival rates of 83% (10/12) and 75% (9/12) over the course of the study period. Histological (Masson's trichrome analysis) and immunohistochemical (IHC) evaluations demonstrated both implant groups supported de novo formation of smooth muscle layers with contractile protein expression [α-smooth muscle actin (α-SMA) and SM22α] as well as maturation of multi-layer urothelia expressing cytokeratin (CK) and uroplakin 3A proteins. Histomorphometric analysis revealed bi-layer SF and SIS scaffolds respectively reconstituted 64% and 56% of the level of α-SMA+ smooth muscle bundles present in SCI-alone controls, while similar degrees of CK+ urothelium across all experimental groups were detected. Parallel evaluations showed similar degrees of vascular area and synaptophysin+ boutons in all regenerated tissues compared to SCI-alone controls. In addition, improvements in certain urodynamic parameters in SCI animals, such as decreased peak intravesical pressure, following implantation with both matrix configurations were also observed. The data presented in this study detail the ability of acellular SIS and bi-layer SF scaffolds to support formation of innervated, vascularized smooth muscle and urothelial tissues in a neurogenic bladder model.

Indexed as

RegenerationAnimalsFemaleFibroinsIntestinal MucosaRatsRats, Sprague-DawleySpinal Cord InjuriesTissue EngineeringTissue ScaffoldsUrinary BladderFibroinsBladder tissue engineeringSilkSmall intestine submucosaUrinary tract

Identifiers

PMID24917031
PMCPMC4111136
OpenAlexW1990115383

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.