Evidence map›Paper›PMID 34396506›Full record

ArticleBiotechnology and bioengineering2021

Mesenchymal stem cells and local tacrolimus delivery synergistically enhance neurite extension.

Sara Saffari, Tiam M Saffari, Katelyn Chan, Gregory H Borschel, Alexander Y Shin

Open access · bronzeAbstract read
In one paragraph

Article in Biotechnology and bioengineering, 2021. 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
1.0field-weighted citation impact, top 28% 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, 11 citations in OpenAlex.

  1. Article
  2. Advancing Peripheral Nerve Regeneration (Nerve SPACE 2025).Journal of hand surgery global online · 2026
    Article
  3. Article
  4. Article
  5. Review
  6. 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

5 authors at 2 institutions in 3 countries.

Sara SaffariDivision of Hand and Microvascular Surgery, Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota, USA.
Tiam M SaffariDivision of Hand and Microvascular Surgery, Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota, USA.
Katelyn ChanDivision of Plastic and Reconstructive Surgery, The Hospital for Sick Children, Toronto, Ontario, Canada.
Gregory H BorschelDivision of Plastic and Reconstructive Surgery, The Hospital for Sick Children, Toronto, Ontario, Canada.
Alexander Y ShinDivision of Hand and Microvascular Surgery, Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota, USA.ORCID 0000-0001-9658-8192
Mayo Clinic · USUniversity of Toronto · CA

Funding

Bridging the gap: Angiogenesis and stem cell seeding of processed nerve allograftR01NS102360 · NINDS · MAYO CLINIC ROCHESTER · PI SHIN, ALEXANDER Y. · 2018 to 2022
$1.7M
NIH HHS R01NS102360NINDS NIH HHS R01 NS102360
6 · The paper itself

Abstract

backgroundThe aim of this study was to investigate the combined effect of mesenchymal stem cells (MSC) and local delivery of tacrolimus (FK506) on nerve regeneration when applied to nerve autografts and decellularized allografts.

methodsA three-dimensional in vitro compartmented cell culture system consisting of a neonatal dorsal root ganglion adjacent to a nerve graft was used to evaluate the regenerating neurites into the peripheral nerve scaffold. Nerve autografts and allografts were treated with (i) undifferentiated MSCs, (ii) FK506 (100 ng/mL) or (iii) both (N = 9/group). After 48 hours, neurite extension was measured to quantify nerve regeneration and stem cell viability was evaluated.

resultsStem cell viability was confirmed in all MSC-treated grafts. Neurite extension was superior in autografts treated with FK506, and MSCs and FK506 combined (p < 0.001 and p = 0.0001, respectively), and autografts treated with MSCs (p = 0.12) were comparable to untreated autografts. In allografts, FK506 treatment and combined treatment were superior to controls (p < 0.001 and p = 0.0001, respectively), and treatment with MSCs (p = 0.09) was comparable to controls. All autograft groups were superior compared to their respective allograft treatment group (p < 0.05) in neurite extension.

conclusionsAlone, either MSC or FK506 treatment improved neurite outgrowth, and combined they further enhanced neurite extension in both autografts and allografts.

Indexed as

Mesenchymal Stem Cell TransplantationAllograftsAnimalsGanglia, SpinalMesenchymal Stem CellsNerve RegenerationNeuritesRatsRats, Inbred LewRats, Sprague-DawleyTacrolimusTacrolimuslocal drug deliverymesenchymal stem cellsnerve regenerationperipheral nerve injurytacrolimus (FK506)

Identifiers

PMID34396506
PMCPMC8744499
OpenAlexW3195856520

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.