Evidence map›Paper›PMID 29921317›Full record

ArticleStem cell research & therapy2018

Bone marrow mesenchymal stem cells do not enhance intra-synovial tendon healing despite engraftment and homing to niches within the synovium.

Mohammad R Khan, Jayesh Dudhia, Frederic H David, Roberta De Godoy, Vedika Mehra, Gillian Hughes, Stephanie G Dakin, Andrew J Carr, Allen E Goodship, Roger K W Smith

Open access · goldAbstract read
In one paragraph

Article in Stem cell research & therapy, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
5.4field-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

16 citing papers in PubMed, 37 citations in OpenAlex.

  1. Review
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  4. The effects of NF-κB suppression on the early healing response following intrasynovial tendon repair in a canine model.Journal of orthopaedic research : official publication of the Orthopaedic Research Society · 2023
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  11. Tendon and Ligament Healing and Current Approaches to Tendon and Ligament Regeneration.Journal of orthopaedic research : official publication of the Orthopaedic Research Society · 2020
    Review
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  15. Combined ascorbic acid and TJournal of orthopaedic surgery and research · 2019
    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

10 authors at 3 institutions in 1 country.

Mohammad R KhanRoyal Veterinary College, Hawkshead Lane, Hatfield, AL9 7TA, UK.
Jayesh DudhiaRoyal Veterinary College, Hawkshead Lane, Hatfield, AL9 7TA, UK. jdudhia@rvc.ac.uk.ORCID 0000-0002-2503-697X
Frederic H DavidRoyal Veterinary College, Hawkshead Lane, Hatfield, AL9 7TA, UK.
Roberta De GodoyRoyal Veterinary College, Hawkshead Lane, Hatfield, AL9 7TA, UK.
Vedika MehraRoyal Veterinary College, Hawkshead Lane, Hatfield, AL9 7TA, UK.
Gillian HughesRoyal Veterinary College, Hawkshead Lane, Hatfield, AL9 7TA, UK.
Stephanie G DakinRoyal Veterinary College, Hawkshead Lane, Hatfield, AL9 7TA, UK.
Andrew J CarrBotnar Research Centre Institute of Musculoskeletal Sciences, University of Oxford, Oxford, OX3 7LD, UK.
Allen E GoodshipUCL Institute of Orthopaedics and Musculoskeletal Science, Stanmore, HA7 4LP, UK.
Roger K W SmithRoyal Veterinary College, Hawkshead Lane, Hatfield, AL9 7TA, UK.
Royal Veterinary College · GBRoyal National Orthopaedic Hospital · GBUniversity of Oxford · GB

Funding

Department of Health II-LB-0715-20001Medical Research Council MR/J006815/1Medical Research Council MRJ0068151
6 · The paper itself

Abstract

backgroundIntra-synovial tendon injuries display poor healing, which often results in reduced functionality and pain. A lack of effective therapeutic options has led to experimental approaches to augment natural tendon repair with autologous mesenchymal stem cells (MSCs) although the effects of the intra-synovial environment on the distribution, engraftment and functionality of implanted MSCs is not known. This study utilised a novel sheep model which, although in an anatomically different location, more accurately mimics the mechanical and synovial environment of the human rotator cuff, to determine the effects of intra-synovial implantation of MSCs.

methodsA lesion was made in the lateral border of the lateral branch of the ovine deep digital flexor tendon within the digital sheath and 2 weeks later 5 million autologous bone marrow MSCs were injected under ultrasound guidance into the digital sheath. Tendons were recovered post mortem at 1 day, and 1-2, 4, 12 and 24 weeks after MSC injection. For the 1-day and 1-2-week groups, MSCs labelled with fluorescent-conjugated magnetic iron-oxide nanoparticles (MIONs) were tracked with MRI, histology and flow cytometry. The 4, 12 and 24-week groups were implanted with non-labelled cells and compared with saline-injected controls for healing.

resultsThe MSCs displayed no reduced viability in vitro to an uptake of 20.0 ± 4.6 pg MIONs per cell, which was detectable by MRI at minimal density of ~ 3 × 10

conclusionsUnlike other laboratory animal models of tendon injury, this novel model mimics the failed tendon healing seen clinically intra-synovially. Importantly, however, implanted stem cells exhibited homing to synovium niches where they survived for at least 14 days. This phenomenon could be utilised in the development of novel physical or biological approaches to enhance localisation of cells in augmenting intra-synovial tendon repair.

Indexed as

Bone MarrowHumansMesenchymal Stem CellsMesenchymal Stem Cell TransplantationSynovial MembraneTendon InjuriesDeep digital flexor tendonIntra-synovial tendon injuryMagnetic iron-oxide nanoparticlesMesenchymal stem cellsOvine

Identifiers

PMID29921317
PMCPMC6009051
OpenAlexW2809159533

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.