Evidence map›Paper›PMID 32923623›Full record

ArticleScience advances2020

Accumulation of collagen molecular unfolding is the mechanism of cyclic fatigue damage and failure in collagenous tissues.

Jared L Zitnay, Gang Seob Jung, Allen H Lin, Zhao Qin, Yang Li, S Michael Yu, Markus J Buehler, Jeffrey A Weiss

Abstract read
In one paragraph

Article in Science advances, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 49 papers.

0numbers the graph read from it
0cells of the map it votes in
49citing papers in PubMed
–field-weighted citation impact
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

49 citing papers in PubMed.

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  13. Shear wave propagation as a noninvasive metric of loading and microdamage in tendon fascicles.Journal of the mechanical behavior of biomedical materials · 2025
    Article
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  20. Achieving tendon enthesis regeneration across length scales.Current opinion in biomedical engineering · 2024
    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

8 authors.

Jared L ZitnayDepartment of Biomedical Engineering, University of Utah, Salt Lake City, UT 84112, USA.ORCID 0000-0002-6134-6473
Gang Seob JungLaboratory for Atomistic and Molecular Mechanics, Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.ORCID 0000-0002-8047-6505
Allen H LinDepartment of Biomedical Engineering, University of Utah, Salt Lake City, UT 84112, USA.ORCID 0000-0001-5169-9083
Zhao QinLaboratory for Atomistic and Molecular Mechanics, Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.ORCID 0000-0001-5696-8553
Yang LiDepartment of Biomedical Engineering, University of Utah, Salt Lake City, UT 84112, USA.
S Michael YuDepartment of Biomedical Engineering, University of Utah, Salt Lake City, UT 84112, USA.ORCID 0000-0002-5171-2644
Markus J BuehlerLaboratory for Atomistic and Molecular Mechanics, Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.ORCID 0000-0002-4173-9659
Jeffrey A WeissDepartment of Biomedical Engineering, University of Utah, Salt Lake City, UT 84112, USA.ORCID 0000-0002-7264-2454

Funding

Models to Predict Protein Biomaterial PerformanceU01EB014976 · NIBIB · TUFTS UNIVERSITY MEDFORD · PI BUEHLER, MARKUS J., KAPLAN, DAVID L. · 2012 to 2020
$5.2M
Targeting Collagen Mechanical Damage using Collagen Hybridizing PeptidesR01AR071358 · NIAMS · UNIVERSITY OF UTAH · PI WEISS, JEFFREY A., YU, MICHAEL S · 2018 to 2022
$1.9M
Functional cellular effects of 3D multiscale tissue structure, using tissue surrogate materialsF31EB023086 · NIBIB · UNIVERSITY OF UTAH · PI ZITNAY, JARED LOUIS · 2016 to 2018
$88k
NIAMS NIH HHS R01 AR071358NIBIB NIH HHS F31 EB023086NIBIB NIH HHS U01 EB014976
6 · The paper itself

Abstract

Overuse injuries to dense collagenous tissues are common, but their etiology is poorly understood. The predominant hypothesis that micro-damage accumulation exceeds the rate of biological repair is missing a mechanistic explanation. Here, we used collagen hybridizing peptides to measure collagen molecular damage during tendon cyclic fatigue loading and computational simulations to identify potential explanations for our findings. Our results revealed that triple-helical collagen denaturation accumulates with increasing cycles of fatigue loading, and damage is correlated with creep strain independent of the cyclic strain rate. Finite-element simulations demonstrated that biphasic fluid flow is a possible fascicle-level mechanism to explain the rate dependence of the number of cycles and time to failure. Molecular dynamics simulations demonstrated that triple-helical unfolding is rate dependent, revealing rate-dependent mechanisms at multiple length scales in the tissue. The accumulation of collagen molecular denaturation during cyclic loading provides a long-sought "micro-damage" mechanism for the development of overuse injuries.

Identifiers

PMID32923623
PMCPMC7455178

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Registered trials

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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.