Evidence map›Paper›PMID 21115129›Full record

ArticleOsteoarthritis and cartilage2011

Intrinsic repair of full-thickness articular cartilage defects in the axolotl salamander.

R S Cosden, C Lattermann, S Romine, J Gao, S R Voss, J N MacLeod

Abstract read
In one paragraph

Article in Osteoarthritis and cartilage, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

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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

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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

16 citing papers in PubMed.

  1. Review
  2. Review
  3. Bone Healing Process of a Multiple Humeral Fracture in aAnimals : an open access journal from MDPI · 2023
    Article
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  6. Article
  7. Article
  8. Review
  9. Article
  10. Article
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  12. Article
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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.

R S CosdenDepartment of Veterinary Science, University of Kentucky, Lexington, KY 40546, USA.
C Lattermann
S Romine
J Gao
S R Voss
J N MacLeod

Funding

GENOME RESOURCES FOR MODEL AMPHIBIANSR24RR016344 · NCRR · UNIVERSITY OF KENTUCKY · PI VOSS, STEPHEN RANDAL · 2002 to 2011
$3.5M
NCRR NIH HHS R24 RR016344
6 · The paper itself

Abstract

objectiveThe ability to fully regenerate lost limbs has made the axolotl salamander (Ambystoma mexicanum) a valuable model for studies of tissue regeneration. The current experiments investigate the ability of these vertebrates to repair large articular cartilage defects and restore normal hyaline cartilage and joint structure independent of limb amputation.

methodsFull-thickness articular cartilage defects were made by resection of the medial femoral condyle to the level of the metaphysis. At 0, 2 days, 1, 2, 3, 4, 6, 8, 12, 18, 24, 36 and 48 weeks post-surgery, the repair process was analyzed on H&E and Safranin-O stained 7 μm tissue sections. Symmetric Kullback-Leibler (SKL) divergences were used to assess proteoglycan staining intensities. Immunohistochemistry was performed for collagen types I and II.

resultsA fibrous "interzone-like" tissue occupies the intraarticular space of the axolotl femorotibial joint and no evidence of joint cavitation was observed. By 4 weeks post-surgery, cells within the defect site exhibited morphological similarities to those of the interzone-like tissue. At 24 weeks, joint structure and cartilaginous tissue repair were confirmed by immunohistochemistry for collagen types I and II. Quantitation of Safranin-O staining indicated restoration of proteoglycan content by 18 weeks.

conclusionsThe axolotl femorotibial joint has morphological similarities to the developing mammalian diarthrodial joint. Cells in the intraarticular space may be homologous to the interzone tissue and contribute to intrinsic repair of full-thickness articular cartilage defects. Taken together, these results suggest that the axolotl may serve as a valuable model for the investigation of cellular and molecular mechanisms that achieve full articular cartilage repair.

Indexed as

Wound HealingAnimalsCartilage, ArticularCaudataCollagenFemurImmunohistochemistryKnee InjuriesModels, AnimalProteoglycansCollagenProteoglycans

Identifiers

PMID21115129
PMCPMC3555487

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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.