Evidence map›Paper›PMID 31022268›Full record

ArticlePloS one2019

Is remaining intervertebral disc tissue interfering with bone generation during fusion of two vertebrae?

D Kok, C M M Peeters, Z Mardina, D L M Oterdoom, S K Bulstra, A G Veldhuizen, R Kuijer, F H Wapstra

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2019. 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
0.9field-weighted citation impact, top 26% 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, 9 citations in OpenAlex.

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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 1 institution in 1 country.

D KokDepartment of Orthopaedics, Rijnstate Hospital, Arnhem, The Netherlands.ORCID 0000-0003-4768-3569
C M M PeetersDepartment of Orthopaedics, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.ORCID 0000-0001-6292-6202
Z MardinaDepartment of Biomedical Engineering, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.
D L M OterdoomDepartment of Neurosurgery, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.
S K BulstraDepartment of Orthopaedics, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.
A G VeldhuizenDepartment of Orthopaedics, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.
R KuijerDepartment of Biomedical Engineering, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.ORCID 0000-0002-7637-4944
F H WapstraDepartment of Orthopaedics, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.
University Medical Center Groningen · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

STUDY

designlaboratory research.

backgroundThrough the increasing number of minimally invasive procedures in spinal fusion surgery, the complete removal of intervertebral disc (IVD) tissue has become more a challenge. Remaining IVD may interfere with the biological process of bone formation.

objectiveIn order to establish whether complete removal of IVD tissue will improve or inhibit the fusion process, the effects of different concentrations of extracts of inflamed disc tissue on the mitochondrial activity of mesenchymal stem cells (MSCs), and the capacity to mineralize their extracellular matrix by osteoblasts and differentiated MSCs were tested in vitro.

methodsA MTT assay was conducted to measure the mitochondrial activity of MSCs, and an Alizarin Red S staining quantification assay to measure the deposition of calcium by osteoblasts and differentiated, bone marrow-derived MSCs.

resultsA significantly higher mitochondrial activity was shown in MSCs co-cultured with extracts of IVD tissue (10%, 50%, and 100%) compared with the control group after 48 hours of incubation, indicating that the IVD tissue extracts stimulated the mitochondrial activity of MSCs. This effect appeared to be inversely proportional to the concentration of IVD tissue extract. No significant differences in mineralization by human osteoblasts or differentiated MSCs were found between the samples incubated with IVD tissue extracts (3% and 33%) and the control samples.

conclusionOur findings indicate that remaining IVD tissue has more of a stimulating than inhibiting effect on the activity of MSCs. Even if inflammatory cytokines are produced, these do not result in a net inhibition of cellular activity or osteogenic differentiation of MSCs.

Indexed as

Cell DifferentiationCells, CulturedCoculture TechniquesExtracellular MatrixHumansIntervertebral DiscIntervertebral Disc DegenerationMesenchymal Stem CellsMitochondriaOsteoblastsOsteogenesisPrimary Cell CultureSpinal Fusion

Identifiers

PMID31022268
PMCPMC6483188
OpenAlexW2942277379

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.