Evidence map›Paper›PMID 30808065›Full record

ArticleJournal of tissue engineering and regenerative medicine2019

Combinatorial tissue engineering partially restores function after spinal cord injury.

Jeffrey S Hakim, Brian R Rodysill, Bingkun K Chen, Ann M Schmeichel, Michael J Yaszemski, Anthony J Windebank, Nicolas N Madigan

Open access · greenAbstract read
In one paragraph

Article in Journal of tissue engineering and regenerative medicine, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
1.5field-weighted citation impact, top 20% 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

15 citing papers in PubMed, 25 citations in OpenAlex.

  1. Article
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  7. Open-Spaced Ridged Hydrogel Scaffolds Containing TiOInternational journal of molecular sciences · 2023
    Article
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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 at 1 institution in 1 country.

Jeffrey S HakimDepartment of Neurology, Mayo Clinic, Rochester, Minnesota, USA.
Brian R RodysillDepartment of Neurology, Mayo Clinic, Rochester, Minnesota, USA.
Bingkun K ChenDepartment of Neurology, Mayo Clinic, Rochester, Minnesota, USA.
Ann M SchmeichelDepartment of Neurology, Mayo Clinic, Rochester, Minnesota, USA.
Michael J YaszemskiDepartment of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota, USA.
Anthony J WindebankDepartment of Neurology, Mayo Clinic, Rochester, Minnesota, USA.ORCID 0000-0003-3481-0274
Nicolas N MadiganDepartment of Neurology, Mayo Clinic, Rochester, Minnesota, USA.
Mayo Clinic · US

Funding

NRSA Training CoreTL1TR002380 · NCATS · MAYO CLINIC ROCHESTER · PI Felicity T. B. Enders, ANTHONY John WINDEBANK · 2017 to 2026
$6.0M
Medical Scientist Traning Program at Mayo ClinicT32GM065841 · NIGMS · MAYO CLINIC ROCHESTER · PI KAUFMANN, SCOTT H, SCHIMMENTI, LISA A · 2003 to 2022
$5.8M
Translational Research in Regenerative MedicineT32EB005583 · NIBIB · RUTGERS, THE STATE UNIV OF N.J. · PI LEE, KIBUM, PAREKKADAN, BIJU · 2006 to 2022
$4.7M
Biodegradable Polymer Implants for Spinal Cord RepairR01EB002390 · NIBIB · MAYO CLINIC ROCHESTER · PI WINDEBANK, ANTHONY JOHN · 2003 to 2006
$1.3M
NCATS NIH HHS TL1 TR002380NIBIB NIH HHS R01 EB002390NIBIB NIH HHS T32 EB005583NIGMS NIH HHS T32 GM065841
6 · The paper itself

Abstract

Hydrogel scaffolds provide a beneficial microenvironment in transected rat spinal cord. A combinatorial biomaterials-based strategy provided a microenvironment that facilitated regeneration while reducing foreign body reaction to the three-dimensional spinal cord construct. We used poly lactic-co-glycolic acid microspheres to provide sustained release of rapamycin from Schwann cell (SC)-loaded, positively charged oligo-polyethylene glycol fumarate scaffolds. The biological activity and dose-release characteristics of rapamycin from microspheres alone and from microspheres embedded in the scaffold were determined in vitro. Three dose formulations of rapamycin were compared with controls in 53 rats. We observed a dose-dependent reduction in the fibrotic reaction to the scaffold and improved functional recovery over 6 weeks. Recovery was replicated in a second cohort of 28 animals that included retransection injury. Immunohistochemical and stereological analysis demonstrated that blood vessel number, surface area, vessel diameter, basement membrane collagen, and microvessel phenotype within the regenerated tissue was dependent on the presence of SCs and rapamycin. TRITC-dextran injection demonstrated enhanced perfusion into scaffold channels. Rapamycin also increased the number of descending regenerated axons, as assessed by Fast Blue retrograde axonal tracing. These results demonstrate that normalization of the neovasculature was associated with enhanced axonal regeneration and improved function after spinal cord transection.

Indexed as

Cells, ImmobilizedMicrospheresSchwann CellsSirolimusSpinal Cord RegenerationAnimalsCell LineDelayed-Action PreparationsFemalePolyethylene GlycolsPolylactic Acid-Polyglycolic Acid CopolymerRatsRats, Inbred F344Spinal Cord InjuriesTissue EngineeringTissue ScaffoldsDelayed-Action PreparationsPolyethylene GlycolsPolylactic Acid-Polyglycolic Acid CopolymerSirolimusbiodegradablecombination productnervous systemregenerationscaffoldspinal cord injury

Identifiers

PMID30808065
PMCPMC6529286
OpenAlexW2953289060

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.