Evidence map›Paper›PMID 32613167›Full record

ArticleJOR spine2020

Optimization of a rat lumbar IVD degeneration model for low back pain.

Juliane D Glaeser, Wafa Tawackoli, Derek G Ju, Jae H Yang, Linda Ea Kanim, Khosrowdad Salehi, Victoria Yu, Evan Saidara, Jean-Phillipe Vit, Zhanna Khnkoyan and 4 more

Open access · goldAbstract read
In one paragraph

Article in JOR spine, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed
2.8field-weighted citation impact, top 9% 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

30 citing papers in PubMed, 37 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

14 authors at 2 institutions in 3 countries.

Juliane D GlaeserOrthopaedic Stem Cell Research Laboratory Cedars-Sinai Medical Center Los Angeles California USA.
Wafa TawackoliOrthopaedic Stem Cell Research Laboratory Cedars-Sinai Medical Center Los Angeles California USA.
Derek G JuOrthopaedic Stem Cell Research Laboratory Cedars-Sinai Medical Center Los Angeles California USA.
Jae H YangOrthopaedic Stem Cell Research Laboratory Cedars-Sinai Medical Center Los Angeles California USA.
Linda Ea KanimOrthopaedic Stem Cell Research Laboratory Cedars-Sinai Medical Center Los Angeles California USA.
Khosrowdad SalehiOrthopaedic Stem Cell Research Laboratory Cedars-Sinai Medical Center Los Angeles California USA.
Victoria YuOrthopaedic Stem Cell Research Laboratory Cedars-Sinai Medical Center Los Angeles California USA.
Evan SaidaraOrthopaedic Stem Cell Research Laboratory Cedars-Sinai Medical Center Los Angeles California USA.
Jean-Phillipe VitDepartment of Biomedical Sciences Cedars-Sinai Medical Center Los Angeles California USA.
Zhanna KhnkoyanOrthopaedic Stem Cell Research Laboratory Cedars-Sinai Medical Center Los Angeles California USA.
Zachary NaPierOrthopaedic Stem Cell Research Laboratory Cedars-Sinai Medical Center Los Angeles California USA.
Laura S StoneMcGill University, Faculty of Dentistry Alan Edwards Centre for Research on Pain Montreal Canada.
Hyun W BaeOrthopaedic Stem Cell Research Laboratory Cedars-Sinai Medical Center Los Angeles California USA.
Dmitriy SheynOrthopaedic Stem Cell Research Laboratory Cedars-Sinai Medical Center Los Angeles California USA.ORCID https://orcid.org/0000-0002-3333-1485
Cedars-Sinai Medical Center · USMcGill University Health Centre · CA

Funding

Induced pluripotent stem cell therapy for degenerated IVDK01AR071512 · NIAMS · CEDARS-SINAI MEDICAL CENTER · PI SHEYN, DMITRIY · 2018 to 2022
$595k
NIAMS NIH HHS K01 AR071512
6 · The paper itself

Abstract

introductionIntervertebral disc (IVD) degeneration is often associated with low back pain and radiating leg pain. The purpose of this study is to develop a reproducible and standardized preclinical model of painful lumbar IVD degeneration by evaluation of structural and behavioral changes in response to IVD injury with increasing needle sizes. This model can be used to develop new therapies for IVD degeneration.

methodsForty-five female Sprague Dawley rats underwent anterior lumbar disc needle puncture at levels L4-5 and L5-6 under fluoroscopic guidance. Animals were randomly assigned to four different experimental groups: needle sizes of 18 Gauge (G), 21G, 23G, and sham control. To monitor the progression of IVD degeneration and pain, the following methods were employed: μMRI, qRT-PCR, histology, and biobehavioral analysis.

resultsT1- and T2-weighted μMRI analysis showed a correlation between the degree of IVD degeneration and needle diameter, with the most severe degeneration in the 18G group. mRNA expression of markers for IVD degeneration markers were dysregulated in the 18G and 21G groups, while pro-nociceptive markers were increased in the 18G group only. Hematoxylin and Eosin (H&E) and Alcian Blue/Picrosirius Red staining confirmed the most pronounced IVD degeneration in the 18G group. Randall-Selitto and von Frey tests showed increased hindpaw sensitivity in the 18G group.

conclusionOur findings demonstrate that anterior disc injury with an 18G needle creates severe IVD degeneration and mechanical hypersensitivity, while the 21G needle results in moderate degeneration with no increased pain sensitivity. Therefore, needle sizes should be selected depending on the desired phenotype for the pre-clinical model.

Indexed as

degenerationinflammationpainpreclinical models

Identifiers

PMID32613167
PMCPMC7323460
OpenAlexW3037487698

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.