Evidence map›Paper›PMID 14695332›Full record

ArticleThe American journal of pathology2004

Mechanical overload induces VEGF in cartilage discs via hypoxia-inducible factor.

Thomas Pufe, Angelika Lemke, Bodo Kurz, Wolf Petersen, Bernhard Tillmann, Alan J Grodzinsky, Rolf Mentlein

Open access · bronzeAbstract read
In one paragraph

Article in The American journal of pathology, 2004. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 53 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
53citing papers in PubMed, 1 pooled it
8.5field-weighted citation impact, top 2% 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

53 citing papers in PubMed, 1 synthesis or guideline pooled it, 149 citations in OpenAlex.

  1. Pooled it
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  10. Intra-articular etanercept attenuates pain and hypoxia from TMJ loading in the rat.Journal of orthopaedic research : official publication of the Orthopaedic Research Society · 2020
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  11. Article
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  13. Erythropoietin inhalation enhances adult canine alveolar-capillary formation following pneumonectomy.American journal of physiology. Lung cellular and molecular physiology · 2019
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  15. Review
  16. Inflammatory Biomarker Profiling in Total Joint Arthroplasty and Its Relevance to Circulating Levels of Lubricin, a Novel Proteoglycan.Clinical and applied thrombosis/hemostasis : official journal of the International Academy of Clinical and Applied Thrombosis/Hemostasis · 2018
    Article
  17. Review
  18. Article
  19. Article
  20. Article
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

7 authors at 2 institutions in 2 countries.

Thomas PufeDepartment of Anatomy, University of Kiel, Kiel, Germany.
Angelika Lemke
Bodo Kurz
Wolf Petersen
Bernhard Tillmann
Alan J Grodzinsky
Rolf Mentlein
Kiel University · DEMassachusetts Institute of Technology · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

VEGF (vascular endothelial growth factor) is not only one of the most important angiogenesis factors, but is involved also in inflammatory processes. Recent studies have shown that VEGF as well as its receptor VEGFR-2 are expressed on osteoarthritic chondrocytes, but not on normal adult chondrocytes. Since mechanical overload is one of the causative factors for osteoarthritis, we studied its effect on VEGF expression on bovine cartilage disks that were compressed once with a strain of 50% and a strain rate of 1/second. Under these conditions, control disks (without pressure) were completely negative for VEGF expression as evidenced by immunocytochemical stainings as well as by enzyme-linked immunosorbent assay (ELISA) measurements. In contrast, 4 days after mechanical overload, the cartilage disks were positive in both detection methods. In addition, after mechanical overload chondrocytes were strongly immunopositive for hypoxia-inducible factor-1alpha (HIF-1alpha), the limiting protein of the dimeric transcription factor HIF-1 that is known to induce VEGF expression. Furthermore, the matrix metalloproteases MMP-1, MMP-3, and MMP-13, could be easily detected in pressure-treated disks by immunohistochemistry whereas staining in controls was low or undetectable. The tissue inhibitors of metalloproteinases (TIMP-1 and -2) could be detected in controls but not in samples treated with mechanical overload. To prove that increased MMP or decreased TIMP expression could be a result of the autocrine action of VEGF on chondrocytes, we repeated the experiments in the presence of a specific inhibitor for the kinase activity of the VEGFR-2. This inhibitor was effective to reduce mechanically induced MMP-1, -3, and -13 immunostaining and to restore TIMP expression. Taking together, these findings indicate that VEGF is induced in chondrocytes by mechanical overload and mediates destructive processes in osteoarthritis as an autocrine factor.

Indexed as

Transcription FactorsAnimalsBlotting, WesternCartilageCattleDNA-Binding ProteinsEnzyme InhibitorsEnzyme-Linked Immunosorbent AssayHypoxia-Inducible Factor 1ImmunohistochemistryMetalloproteasesNuclear ProteinsStress, MechanicalTissue Inhibitor of MetalloproteinasesVascular Endothelial Growth Factor ADNA-Binding ProteinsEnzyme InhibitorsHypoxia-Inducible Factor 1MetalloproteasesNuclear ProteinsTissue Inhibitor of MetalloproteinasesTranscription FactorsVascular Endothelial Growth Factor A

Identifiers

PMID14695332
PMCPMC1602231
OpenAlexW2008246498

What OpenQuestion holds

Textmetadata
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.