Evidence map›Paper›PMID 19070514›Full record

ArticleOsteoarthritis and cartilage2009

A novel in vivo murine model of cartilage regeneration. Age and strain-dependent outcome after joint surface injury.

N M Eltawil, C De Bari, P Achan, C Pitzalis, F Dell'accio

Open access · bronzeAbstract readValidation Study
In one paragraph

Article in Osteoarthritis and cartilage, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 55 papers.

0numbers the graph read from it
0cells of the map it votes in
55citing papers in PubMed
2.6field-weighted citation impact, top 11% 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

55 citing papers in PubMed, 116 citations in OpenAlex.

  1. p21 Knockdown as a Therapeutic Strategy for Focal Cartilage Injury Repair.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2026
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  13. p21Cartilage · 2021
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  15. [Comparison of two methods for preparing knee osteochondral injury models in mice].Zhongguo xiu fu chong jian wai ke za zhi = Zhongguo xiufu chongjian waike zazhi = Chinese journal of reparative and reconstructive surgery · 2021
    Article
  16. WNT3A-loaded exosomes enable cartilage repair.Journal of extracellular vesicles · 2021
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  17. Development of anCartilage · 2021
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

5 authors at 3 institutions in 1 country.

N M EltawilWilliam Harvey Research Institute, Barts and the London Queen Mary's School of Medicine and Dentistry, Centre for Experimental Medicine and Rheumatology, London, UK.
C De Bari
P Achan
C Pitzalis
F Dell'accio
William Harvey Research Institute · GBRoyal London Hospital · GBUniversity of Aberdeen · GB

Funding

Arthritis Research UK 16290Medical Research Council G108/620
6 · The paper itself

Abstract

objectivesTo generate and validate a murine model of joint surface repair following acute mechanical injury.

methodsFull thickness defects were generated in the patellar groove of C57BL/6 and DBA/1 mice by microsurgery. Control knees were either sham-operated or non-operated. Outcome was evaluated by histological scoring systems. Apoptosis and proliferation were studied using TUNEL and Phospho-Histone H3 staining, respectively. Type II collagen neo-deposition and degradation were evaluated by immunostaining using antibodies to the CPII telopeptide and C1,2C (Col2-3/4Cshort), respectively. Aggrecanases and matrix metalloproteinases (MMPs) activity were assessed by immunostaining for TEGE(373) and VDIPEN neo-epitopes.

resultsYoung 8-week-old DBA/1 mice displayed consistent and superior healing of the articular cartilage defect. Age-matched C57BL/6 mice repaired poorly and developed features of osteoarthritis (OA). Compared to C57BL/6, DBA/1 mice displayed a progressive decline of chondrocyte apoptosis, cell proliferation within the repair tissue, persistent type II collagen neo-deposition, less type II collagen degradation, less aggrecanases and more MMP-induced aggrecan degradation. Eight-month-old DBA/1 mice failed to repair, but, in contrast to age-matched C57BL/6 mice, developed no signs of OA.

conclusionWe have generated and validated a murine model of cartilage regeneration in which the outcome of joint surface injury is strain and age dependent. This model will allow, for the first time, the dissection of different pathways involved in joint surface regeneration in adult mammals using the powerful technology of mouse genetics.

Indexed as

Age FactorsAnimalsApoptosisArthritis, ExperimentalCartilage, ArticularConnective Tissue Growth FactorKnee InjuriesMatrix MetalloproteinasesMiceMice, Inbred C57BLMice, Inbred DBAOsteoarthritis, KneeConnective Tissue Growth FactorMatrix Metalloproteinases

Identifiers

PMID19070514
PMCPMC2706394
OpenAlexW2102343281

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.