Evidence map›Paper›PMID 21903884›Full record

ArticleJournal of applied physiology (Bethesda, Md. : 1985)2011

Regional variation in the mechanical role of knee meniscus glycosaminoglycans.

Johannah Sanchez-Adams, Vincent P Willard, Kyriacos A Athanasiou

Abstract read
In one paragraph

Article in Journal of applied physiology (Bethesda, Md. : 1985), 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers.

0numbers the graph read from it
0cells of the map it votes in
32citing papers in PubMed
2.4field-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

32 citing papers in PubMed, 73 citations in OpenAlex.

  1. Article
  2. Review
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Effects of and Response to Mechanical Loading on the Knee.Sports medicine (Auckland, N.Z.) · 2022
    Review
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Degeneration Affects Three-Dimensional Strains in Human Menisci:Frontiers in bioengineering and biotechnology · 2020
    Article
  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

3 authors at 1 institution in 1 country.

Johannah Sanchez-AdamsUC Davis, Dept. of Biomedical Engineering, Davis, CA 95616, USA.
Vincent P Willard
Kyriacos A Athanasiou
University of California, Davis · US

Funding

Toward Tissue Engineering of the Knee MeniscusR01AR047839 · NIAMS · UNIVERSITY OF CALIFORNIA AT DAVIS · PI ATHANASIOU, KYRIACOS A · 2003 to 2010
$2.1M
Regenerating the fibrocartilage spectrum of the TMJ: from disc to condyleR01DE019666 · NIDCR · UNIVERSITY OF CALIFORNIA AT DAVIS · PI ATHANASIOU, KYRIACOS A · 2010 to 2013
$1.4M
NIAMS NIH HHS R01AR-047839NIDCR NIH HHS R01DE-019666
6 · The paper itself

Abstract

High compressive properties of cartilaginous tissues are commonly attributed to the sulfated glycosaminoglycan (GAG) fraction of the extracellular matrix (ECM), but this relationship has not been directly measured in the knee meniscus, which shows regional variation in GAG content. In this study, biopsies from each meniscus region (outer, middle, and inner) were either subjected to chondroitinase ABC (CABC) to remove all sulfated GAGs or not. Compressive testing revealed that GAG depletion in the inner and middle meniscus regions caused a significant decrease in modulus of relaxation (58% and 41% decreases, respectively, at 20% strain), and all regions exhibited a significant decrease in viscosity (outer: 29%; middle: 58%; inner: 62% decrease). Tensile properties following CABC treatment were unaffected for outer and middle meniscus specimens, but the inner meniscus displayed significant increases in Young's modulus (41% increase) and ultimate tensile stress (40% increase) following GAG depletion. These findings suggest that, in the outer meniscus, GAGs contribute to increasing tissue viscosity, whereas in the middle and inner meniscus, where GAGs are most abundant, these molecules also enhance the tissue's ability to withstand compressive loads. GAGs in the inner meniscus also contribute to reducing the circumferential tensile properties of the tissue, perhaps due to the pre-stress on the collagen network from increased hydration of the ECM. Understanding the mechanical role of GAGs in each region of the knee meniscus is important for understanding meniscus structure-function relationships and creating design criteria for functional meniscus tissue engineering efforts.

Indexed as

AnimalsBiomechanical PhenomenaCattleChondroitin ABC LyaseCompressive StrengthExtracellular MatrixGlycosaminoglycansIn Vitro TechniquesMenisci, TibialChondroitin ABC LyaseGlycosaminoglycans

Identifiers

PMID21903884
PMCPMC3233877
OpenAlexW2164121499

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.