Evidence map›Paper›PMID 19912653›Full record

ArticleArthritis research & therapy2009

Intradiscal injection of simvastatin retards progression of intervertebral disc degeneration induced by stab injury.

Huina Zhang, Lin Wang, Jun Beom Park, Paul Park, Victor C Yang, Scott J Hollister, Frank La Marca, Chia-Ying Lin

Open access · goldAbstract read
In one paragraph

Article in Arthritis research & therapy, 2009. 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
3.0field-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, 75 citations in OpenAlex.

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  12. Bone morphogenic protein-2 signaling in human disc degeneration and correlation to the Pfirrmann MRI grading system.The spine journal : official journal of the North American Spine Society · 2021
    Article
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  16. Minimally Invasive and Regenerative Therapeutics.Advanced materials (Deerfield Beach, Fla.) · 2019
    Review
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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.

Huina ZhangSpine Research Laboratory, Department of Neurosurgery, University of Michigan Medical School, 1500 E, Medical Center Drive, Ann Arbor, Michigan 48109, USA. hnzhang@umich.edu
Lin Wang
Jun Beom Park
Paul Park
Victor C Yang
Scott J Hollister
Frank La Marca
Chia-Ying Lin
University of Michigan–Ann Arbor · US

Funding

Engineering Joint Scaffolds for Function/RegenerationR01DE013608 · NIDCR · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI HOLLISTER, SCOTT J · 2001 to 2005
$3.9M
NIDCR NIH HHS R01 DE13608
6 · The paper itself

Abstract

introductionEarlier work indicates that the cholesterol-lowering drug, simvastatin, is anabolic to chondrogenic expression of rat intervertebral disc (IVD) cells, which suggests a potential role for simvastatin in IVD regeneration. In this study, we expand on our earlier work to test the effectiveness of simvastatin on disc degeneration utilizing a rat tail disc degeneration model.

methods30 rats that underwent 21 G needle-puncture at rat tail discs were injected with simvastatin-loaded poly(ethylene glycol)-poly(lactic acid-co-glycolic acid)-poly(ethylene glycol) (PEG-PLGA-PEG) gel (5 mg/ml) or vehicle control at 4 weeks after needle injury. All animals were sacrificed 2 weeks after simvastatin injection. Bone morphogenetic protein-2 (BMP-2), aggrecan, collagen type II, and collagen type I messenger ribonucleic acid (mRNA) expression in the rat nucleus pulposus (NP) were measured by real-time polymerase chain reaction (PCR). In vivo magnetic resonance imaging (MRI) was performed to monitor changes in disc degeneration. Rat discs were also assessed by histology using hematoxylin and eosin (H&E) and safranin O staining. In addition, the NP weight, glycosaminoglycan (sGAG) and DNA content were also measured.

resultsA single dose of simvastatin loaded in thermo-sensitive PEG-PLGA-PEG gel injected into the NP had the trend to increase aggrecan expression and sGAG content, and significantly increased mRNA levels of BMP-2, collagen type II, and the differentiation index (the ratio of collagen type II to collagen type I). The decreased NP weight, T2 intensity, as well as MRI index in the rat tail discs induced by needle puncture were significantly reversed after 2 weeks of simvastatin treatment. In addition, simvastatin treatment also improved histological changes induced by needle puncture.

conclusionsA single injection of simvastatin loaded in PEG-PLGA-PEG gel into rat tail discs had the potential to retard or regenerate the degenerative disc.

Indexed as

AnimalsBone Morphogenetic Protein 2Drug CarriersGelsGene ExpressionHydroxymethylglutaryl-CoA Reductase InhibitorsIntervertebral DiscIntervertebral Disc DegenerationLactic AcidPolyethylene GlycolsPolyglycolic AcidPolylactic Acid-Polyglycolic Acid CopolymerRatsRats, Sprague-DawleyReverse Transcriptase Polymerase Chain ReactionRNA, MessengerBone Morphogenetic Protein 2Drug CarriersGelsHydroxymethylglutaryl-CoA Reductase InhibitorsLactic AcidPolyethylene GlycolsPolyglycolic AcidPolylactic Acid-Polyglycolic Acid CopolymerRNA, MessengerSimvastatin

Identifiers

PMID19912653
PMCPMC3003500
OpenAlexW2161134772

What OpenQuestion holds

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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.