Evidence map›Paper›PMID 31463464›Full record

ArticleJOR spine2019

Annulus fibrosus cell sheets limit disc degeneration in a rat annulus fibrosus injury model.

Tadashi Nukaga, Daisuke Sakai, Jordy Schol, Masato Sato, Masahiko Watanabe

Open access · goldAbstract read
In one paragraph

Article in JOR spine, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
1.8field-weighted citation impact, top 15% 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

14 citing papers in PubMed, 21 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

5 authors at 1 institution in 1 country.

Tadashi NukagaDepartment of Orthopaedic Surgery Tokai University School of Medicine Isehara Kanagawa Japan.
Daisuke SakaiDepartment of Orthopaedic Surgery Tokai University School of Medicine Isehara Kanagawa Japan.ORCID https://orcid.org/0000-0003-4189-9270
Jordy ScholDepartment of Orthopaedic Surgery Tokai University School of Medicine Isehara Kanagawa Japan.ORCID https://orcid.org/0000-0001-5489-2591
Masato SatoDepartment of Orthopaedic Surgery Tokai University School of Medicine Isehara Kanagawa Japan.ORCID https://orcid.org/0000-0003-4049-7325
Masahiko WatanabeDepartment of Orthopaedic Surgery Tokai University School of Medicine Isehara Kanagawa Japan.ORCID https://orcid.org/0000-0001-9038-0446
Tokai University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

In recent years, studies have explored novel approaches for cell transplantation to enable annulus fibrosus (AF) regeneration of the intervertebral disc in particular for lumbar disc herniation. Nevertheless, successful engraftment of cells is structurally challenging, and no definitive method has yet been established. This study investigated the potential of cell sheet technology to facilitate cell engraftment for AF repair. AF injury was induced by a 1 × 1 mm defect in rat tails after which AF cell sheets were transplanted. Its regenerative effects were compared to a nondegenerated and degeneration only conditions. Degenerative changes of the entire intervertebral disc were examined by disc height measurements, histology, and immunohistochemistry for 4-, 8-, and 12-weeks post-transplantation. Cell engraftment was confirmed by tracing PKH26 fluorescent dyed AF cells. In the transplant group, disc degeneration was significantly suppressed after 4, 8, and 12 weeks when compared with the degenerative group, as indicated by histological scoring and DHI observations. At 2 and 4 weeks after transplant, PKH26 positive cells could be detected in defect region and surrounding AF. The results suggest cell engraftment into AF tissue could be established by the cell sheet technology without additional scaffolding or adhesives. In short, AF cell sheets appear to be an effective and accessible tool for AF repair and to support intervertebral disc regeneration.

Indexed as

annulus fibrosiscell sheetcell transplantationdisc herniationintervertebral discratregenerationtissue engineering

Identifiers

PMID31463464
PMCPMC6686811
OpenAlexW2946624380

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.