Evidence map›Paper›PMID 28567592›Full record

ArticleEuropean spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society2017

Transcriptional profiling distinguishes inner and outer annulus fibrosus from nucleus pulposus in the bovine intervertebral disc.

Guus G H van den Akker, Marije I Koenders, Fons A J van de Loo, Peter L E M van Lent, Esmeralda Blaney Davidson, Peter M van der Kraan

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Article in European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society, 2017. 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
–field-weighted citation impact
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.

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  14. Stem cells in intervertebral disc regeneration-more talk than action?Biocell : official journal of the Sociedades Latinoamericanas de Microscopia Electronica ... et. al · 2021
    Article
  15. Single-cell RNA-sequencing atlas of bovine caudal intervertebral discs: Discovery of heterogeneous cell populations with distinct roles in homeostasis.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2021
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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

6 authors.

Guus G H van den AkkerDepartment of Rheumatology, Radboud University Medical Center, PO Box 9101, 6500 HB, Nijmegen, The Netherlands.
Marije I KoendersDepartment of Rheumatology, Radboud University Medical Center, PO Box 9101, 6500 HB, Nijmegen, The Netherlands.
Fons A J van de LooDepartment of Rheumatology, Radboud University Medical Center, PO Box 9101, 6500 HB, Nijmegen, The Netherlands.
Peter L E M van LentDepartment of Rheumatology, Radboud University Medical Center, PO Box 9101, 6500 HB, Nijmegen, The Netherlands.
Esmeralda Blaney DavidsonDepartment of Rheumatology, Radboud University Medical Center, PO Box 9101, 6500 HB, Nijmegen, The Netherlands.
Peter M van der KraanDepartment of Rheumatology, Radboud University Medical Center, PO Box 9101, 6500 HB, Nijmegen, The Netherlands. peter.vanderkraan@radboudumc.nl.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundCells in the intervertebral disc have unique phenotypes and marker genes that separate the nucleus pulposus (NP), annulus fibrosus (AF) and articular cartilage (AC) have been identified. Recently, it was shown that phenotypic marker genes exhibit variable expression in humans. In this study, the bovine tail was used to determine the ability of marker genes to distinguish the outer and inner AF from NP tissue and isolated cells.

methodsBovine tail intervertebral discs from 13 donors were dissected and correct isolation of tissue was confirmed. mRNA was isolated directly from tissue or passage 0 monolayer cells and used for gene expression measurements (qPCR). Conventional marker genes (bAcan, bCol1a1, bCol2a1) and novel marker genes (bAdamts17, bBrachyury/T, bCD24, bCol5a1, bCol12a1, bFoxf1, bKrt19, bPax1, bSfrp2) were evaluated.

resultsAs expected bAcan, bCol2a1 and bCol1a1 distinguished outer AF from NP tissue, while inner AF and NP could not be discriminated. The NP markers bT, bCd24 and bKrt19 were significantly higher expressed in NP than inner and outer AF tissue. bFoxF1 and bPax1 only distinguished IVD tissues from AC. The AF markers bAdamts17, bCol5a1, bCol12a1 and bSfrp2 were higher expressed in the outer AF compared with inner AF and NP tissue. Monolayer culturing strongly decreased bAcan, bCol2a1, bCD24 and bCol5a1 expression, while bCol1a1, bT, bKrt19 and bSfrp2 were not affected.

conclusionThe IVD phenotypic marker genes bT, bKrt19, bSfrp2 and bCol12a1 convincingly distinguished NP from outer AF in situ and in vitro.

Indexed as

Gene Expression ProfilingTranscriptomeAnimalsAnnulus FibrosusCattleGenetic MarkersNucleus PulposusPhenotypeGenetic MarkersAnnulus fibrosusCell biologyIntervertebral discNucleus pulposus

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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.