Evidence map›Paper›PMID 24571576›Full record

ArticleJournal of anatomy2014

3-D ultrastructure and collagen composition of healthy and overloaded human tendon: evidence of tenocyte and matrix buckling.

Jessica Pingel, Yinhui Lu, Tobias Starborg, Ulrich Fredberg, Henning Langberg, Anders Nedergaard, Maryann Weis, David Eyre, Michael Kjaer, Karl E Kadler

Open access · hybridAbstract read
In one paragraph

Article in Journal of anatomy, 2014. 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
8.0field-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

55 citing papers in PubMed, 116 citations in OpenAlex.

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  11. Achilles tendinopathy.Nature reviews. Disease primers · 2025
    Review
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Autophagy guards tendon homeostasis.Cell death & disease · 2022
    Article
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  20. Review
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

10 authors at 6 institutions in 3 countries.

Jessica PingelFaculty of Health and Medical Sciences, Institute of Sports Medicine, Bispebjerg Hospital and Centre for Healthy Aging, University of Copenhagen, Copenhagen, Denmark.
Yinhui Lu
Tobias Starborg
Ulrich Fredberg
Henning Langberg
Anders Nedergaard
Maryann Weis
David Eyre
Michael Kjaer
Karl E Kadler
Bispebjerg Hospital · DKUniversity of Manchester · GBUniversity of Washington · USRegionshospitalet Silkeborg · DKUniversity of Copenhagen · DKWellcome Centre for Cell-Matrix Research · GB

Funding

Project 3: Collagen post-translational modification and cross-linking in OIP01HD070394 · NICHD · BAYLOR COLLEGE OF MEDICINE · PI LEE, BRENDAN · 2011 to 2020
$13.4M
Collagen Cross-linking in Skeletal Aging and DiseaseR37AR037318 · NIAMS · UNIVERSITY OF WASHINGTON · PI EYRE, DAVID R · 2010 to 2019
$3.4M
PATHOLOGY OF INBORN SKELETAL DISEASESR01AR037318 · NIAMS · UNIVERSITY OF WASHINGTON · PI EYRE, DAVID R · 1986 to 2009
$3.4M
Collagens of Cartilage and the Intervertebral DiscR01AR036794 · NIAMS · UNIVERSITY OF WASHINGTON · PI EYRE, DAVID R · 1986 to 2014
$3.3M
NIAMS NIH HHS R01 AR036794NIAMS NIH HHS R01 AR037318NIAMS NIH HHS R37 AR037318NICHD NIH HHS P01 HD070394
6 · The paper itself

Abstract

Achilles tendinopathies display focal tissue thickening with pain and ultrasonography changes. Whilst complete rupture might be expected to induce changes in tissue organization and protein composition, little is known about the consequences of non-rupture-associated tendinopathies, especially with regards to changes in the content of collagen type I and III (the major collagens in tendon), and changes in tendon fibroblast (tenocyte) shape and organization of the extracellular matrix (ECM). To gain new insights, we took biopsies from the tendinopathic region and flanking healthy region of Achilles tendons of six individuals with clinically diagnosed tendinopathy who had no evidence of cholesterol, uric acid and amyloid accumulation. Biochemical analyses of collagen III/I ratio were performed on all six individuals, and electron microscope analysis using transmission electron microscopy and serial block face-scanning electron microscopy were made on two individuals. In the tendinopathic regions, compared with the flanking healthy tissue, we observed: (i) an increase in the ratio of collagen III : I proteins; (ii) buckling of the collagen fascicles in the ECM; (iii) buckling of tenocytes and their nuclei; and (iv) an increase in the ratio of small-diameter : large-diameter collagen fibrils. In summary, load-induced non-rupture tendinopathy in humans is associated with localized biochemical changes, a shift from large- to small-diameter fibrils, buckling of the tendon ECM, and buckling of the cells and their nuclei.

Indexed as

Achilles TendonAdultCollagen Type IIIExtracellular MatrixHumansImaging, Three-DimensionalMicroscopy, ElectronMiddle AgedStress, MechanicalTendinopathyCollagen Type III3View®collagencross-linksfibersfibrilsserial block face-scanning electron microscopy

Identifiers

PMID24571576
PMCPMC3981497
OpenAlexW2064849278

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.