Evidence map›Paper›PMID 26086850›Full record

ArticlePloS one2015

Moderate Exercise Mitigates the Detrimental Effects of Aging on Tendon Stem Cells.

Jianying Zhang, James H-C Wang

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 39 papers.

0numbers the graph read from it
0cells of the map it votes in
39citing papers in PubMed
6.3field-weighted citation impact, top 3% 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

39 citing papers in PubMed, 65 citations in OpenAlex.

  1. Review
  2. Age-related changes in the quadriceps tendon: Collagen fibril diameter decreases with aging.Asia-Pacific journal of sports medicine, arthroscopy, rehabilitation and technology · 2025
    Article
  3. Review
  4. Review
  5. Review
  6. Animal models of tendon calcification: Past, present, and future.Animal models and experimental medicine · 2024
    Review
  7. Review
  8. Review
  9. Article
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  11. Review
  12. Article
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  14. Review
  15. The role of loading in murine models of rotator cuff disease.Journal of orthopaedic research : official publication of the Orthopaedic Research Society · 2022
    Article
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  17. Review
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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

2 authors at 1 institution in 1 country.

Jianying ZhangMechanoBiology Laboratory, Department of Orthopaedic Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America.
James H-C WangMechanoBiology Laboratory, Department of Orthopaedic Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America; Department of Bioengineering, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America; Department of Mechanical Engineering and Materials Science, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America; Department of Physical Medicine and Rehabilitation, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America.
University of Pittsburgh · US

Funding

Repair of tendinopathic tendonsR01AR061395 · NIAMS · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI WANG, JAMES H-C. · 2011 to 2015
$1.8M
The role of TSCs in the degenerative tendinopathy induced by mechanical loadingR01AR065949 · NIAMS · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI WANG, JAMES H-C. · 2015 to 2019
$1.7M
A tissue specific approach to enhance tendon repairR21AR060920 · NIAMS · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI WANG, JAMES H-C. · 2012 to 2013
$365k
NIAMS NIH HHS AR060920NIAMS NIH HHS AR061395NIAMS NIH HHS AR065949NIAMS NIH HHS R01 AR061395NIAMS NIH HHS R01 AR065949NIAMS NIH HHS R21 AR060920
6 · The paper itself

Abstract

Aging is known to cause tendon degeneration whereas moderate exercise imparts beneficial effects on tendons. Since stem cells play a vital role in maintaining tissue integrity, in this study we aimed to define the effects of aging and moderate exercise on tendon stem/progenitor cells (TSCs) using in vitro and in vivo models. TSCs derived from aging mice (9 and 24 months) proliferated significantly slower than TSCs obtained from young mice (2.5 and 5 months). In addition, expression of the stem cell markers Oct-4, nucleostemin (NS), Sca-1 and SSEA-1 in TSCs decreased in an age-dependent manner. Interestingly, moderate mechanical stretching (4%) of aging TSCs in vitro significantly increased the expression of the stem cell marker, NS, but 8% stretching decreased NS expression. Similarly, 4% mechanical stretching increased the expression of Nanog, another stem cell marker, and the tenocyte-related genes, collagen I and tenomodulin. However, 8% stretching increased expression of the non-tenocyte-related genes, LPL, Sox-9 and Runx-2, while 4% stretching had minimal effects on the expression of these genes. In the in vivo study, moderate treadmill running (MTR) of aging mice (9 months) resulted in the increased proliferation rate of aging TSCs in culture, decreased lipid deposition, proteoglycan accumulation and calcification, and increased the expression of NS in the patellar tendons. These findings indicate that while aging impairs the proliferative ability of TSCs and reduces their stemness, moderate exercise can mitigate the deleterious effects of aging on TSCs and therefore may be responsible for decreased aging-induced tendon degeneration.

Indexed as

AgingAnimalsCell DifferentiationCell ProliferationCells, CulturedGene Expression RegulationMicePatellar LigamentPhysical Conditioning, AnimalRunningStem CellsStress, MechanicalWeight-Bearing

Identifiers

PMID26086850
PMCPMC4472753
OpenAlexW637851215

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.