Evidence map›Paper›PMID 19074575›Full record

ArticleJournal of applied physiology (Bethesda, Md. : 1985)2009

Contribution of glycosaminoglycans to viscoelastic tensile behavior of human ligament.

Trevor J Lujan, Clayton J Underwood, Nathan T Jacobs, Jeffrey A Weiss

Abstract read
In one paragraph

Article in Journal of applied physiology (Bethesda, Md. : 1985), 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 83 papers.

0numbers the graph read from it
0cells of the map it votes in
83citing papers in PubMed
4.4field-weighted citation impact, top 6% 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

83 citing papers in PubMed, 147 citations in OpenAlex.

  1. Article
  2. Article
  3. Regulators of ECM structure enable functional adaptation to tensile loading in tendon explants.Matrix biology : journal of the International Society for Matrix Biology · 2026
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  12. Age-dependent changes in collagen crosslinks reduce the mechanical toughness of human meniscus.Journal of orthopaedic research : official publication of the Orthopaedic Research Society · 2024
    Article
  13. Article
  14. Article
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  16. Article
  17. Review
  18. Article
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  20. Article

23 more citing papers are in PubMed but not listed here.

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

4 authors at 2 institutions in 2 countries.

Trevor J LujanDepartment of Bioengineering, University of Utah, Salt Lake City, UT 84112, USA.
Clayton J Underwood
Nathan T Jacobs
Jeffrey A Weiss
University of Utah · USBioengineering Center · RU

Funding

Origins of Elasticity/Viscoelasticity in Knee LigamentsR01AR047369 · NIAMS · UNIVERSITY OF UTAH · PI WEISS, JEFFREY A. · 2000 to 2014
$3.4M
NIAMS NIH HHS AR-047369
6 · The paper itself

Abstract

The viscoelastic properties of human ligament potentially guard against structural failure, yet the microstructural origins of these transient behaviors are unknown. Glycosaminoglycans (GAGs) are widely suspected to affect ligament viscoelasticity by forming molecular bridges between neighboring collagen fibrils. This study investigated whether GAGs directly affect viscoelastic material behavior in human medial collateral ligament (MCL) by using nondestructive tensile tests before and after degradation of GAGs with chondroitinase ABC (ChABC). Control and ChABC treatment (83% GAG removal) produced similar alterations to ligament viscoelasticity. This finding was consistent at different levels of collagen fiber stretch and tissue hydration. On average, stress relaxation increased after incubation by 2.2% (control) and 2.1% (ChABC), dynamic modulus increased after incubation by 3.6% (control) and 3.8% (ChABC), and phase shift increased after incubation by 8.5% (control) and 8.4% (ChABC). The changes in viscoelastic behavior after treatment were significantly more pronounced at lower clamp-to-clamp strain levels. A 10% difference in the water content of tested specimens had minor influence on ligament viscoelastic properties. The major finding of this study is that mechanical interactions between collagen fibrils and GAGs are unrelated to tissue-level viscoelastic mechanics in mature human MCL. These findings narrow the possible number of extracellular matrix molecules that have a direct contribution to ligament viscoelasticity.

Indexed as

Biomechanical PhenomenaCadaverChondroitin ABC LyaseElastic ModulusFibrillar CollagensGlycosaminoglycansHumansMedial Collateral Ligament, KneeMiddle AgedReproducibility of ResultsTensile StrengthTime FactorsViscosityWaterChondroitin ABC LyaseFibrillar CollagensGlycosaminoglycansWater

Identifiers

PMID19074575
PMCPMC2644241
OpenAlexW2131968335

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.