Evidence map›Paper›PMID 22675162›Full record

ArticleJournal of the Royal Society, Interface2012

Immunofluorescence-guided atomic force microscopy to measure the micromechanical properties of the pericellular matrix of porcine articular cartilage.

Rebecca E Wilusz, Louis E DeFrate, Farshid Guilak

Open access · bronzeAbstract read
In one paragraph

Article in Journal of the Royal Society, Interface, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 38 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
38citing papers in PubMed, 1 pooled it
3.5field-weighted citation impact, top 8% 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

38 citing papers in PubMed, 1 synthesis or guideline pooled it, 64 citations in OpenAlex.

  1. Pooled it
  2. Article
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  5. Article
  6. Maternal high-fat high-sugar diet impairs bone quality and strength but not cartilage in aging mice.Journal of orthopaedic research : official publication of the Orthopaedic Research Society · 2025
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  12. Decorin regulates cartilage pericellular matrix micromechanobiology.Matrix biology : journal of the International Society for Matrix Biology · 2021
    Article
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  15. Article
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  18. Effects of dietary fatty acid content on humeral cartilage and bone structure in a mouse model of diet-induced obesity.Journal of orthopaedic research : official publication of the Orthopaedic Research Society · 2019
    Article
  19. Osteoarthritis as a disease of the cartilage pericellular matrix.Matrix biology : journal of the International Society for Matrix Biology · 2018
    Review
  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

3 authors at 2 institutions in 1 country.

Rebecca E WiluszDepartment of Orthopaedic Surgery, Duke University Medical Center, Box 3093, Durham, NC 27710, USA.
Louis E DeFrate
Farshid Guilak
Duke Medical Center · USDuke University · US

Funding

Thermally-Triggered Intra-articular Drug Delivery for OAP01AR050245 · NIAMS · DUKE UNIVERSITY · PI GUILAK, FARSHID · 2003 to 2012
$11.5M
VISCOELASTIC PROPERTIES OF NORMAL AND OA CHONDRONSR01AG015768 · NIA · WASHINGTON UNIVERSITY · PI GUILAK, FARSHID · 1998 to 2022
$7.7M
Mechanical and Osmotic Signaling in ChondrocytesR01AR048182 · NIAMS · DUKE UNIVERSITY · PI GUILAK, FARSHID · 2003 to 2013
$3.0M
Intrinsic Repair of the Knee MeniscusR01AR048852 · NIAMS · DUKE UNIVERSITY · PI GUILAK, FARSHID · 2007 to 2011
$1.4M
The In Vivo Biomechanics of Lateral Ankle Ligament Injury and ReconstructionR03AR055659 · NIAMS · DUKE UNIVERSITY · PI DEFRATE, LOUIS E. · 2008 to 2010
$233k
NIAMS NIH HHS AR055659NIAMS NIH HHS AR48182NIAMS NIH HHS AR48852NIAMS NIH HHS AR50245NIAMS NIH HHS P01 AR050245NIAMS NIH HHS R01 AR048182NIAMS NIH HHS R01 AR048852NIAMS NIH HHS R03 AR055659NIA NIH HHS AG15768NIA NIH HHS R01 AG015768
6 · The paper itself

Abstract

The pericellular matrix (PCM) is a narrow region that is rich in type VI collagen that surrounds each chondrocyte within the extracellular matrix (ECM) of articular cartilage. Previous studies have demonstrated that the chondrocyte micromechanical environment depends on the relative properties of the chondrocyte, its PCM and the ECM. The objective of this study was to measure the influence of type VI collagen on site-specific micromechanical properties of cartilage in situ by combining atomic force microscopy stiffness mapping with immunofluorescence imaging of PCM and ECM regions in cryo-sectioned tissue samples. This method was used to test the hypotheses that PCM biomechanical properties correlate with the presence of type VI collagen and are uniform with depth from the articular surface. Control experiments verified that immunolabelling did not affect the properties of the ECM or PCM. PCM biomechanical properties correlated with the presence of type VI collagen, and matrix regions lacking type VI collagen immediately adjacent to the PCM exhibited higher elastic moduli than regions positive for type VI collagen. PCM elastic moduli were similar in all three zones. Our findings provide further support for type VI collagen in defining the chondrocyte PCM and contributing to its biological and biomechanical properties.

Indexed as

Sus scrofaAnimalsBiomechanical PhenomenaCartilage, ArticularCollagen Type VIElasticityExtracellular MatrixFemaleFluorescent Antibody TechniqueJointsMicroscopy, Atomic ForceMicroscopy, Phase-ContrastCollagen Type VI

Identifiers

PMID22675162
PMCPMC3479909
OpenAlexW2073298576

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.