Evidence map›Paper›PMID 30995070›Full record

ArticleThe American journal of sports medicine2019

Anterior Cruciate Ligament Tear Promotes Skeletal Muscle Myostatin Expression, Fibrogenic Cell Expansion, and a Decline in Muscle Quality.

Bailey D Peck, Camille R Brightwell, Darren L Johnson, Mary Lloyd Ireland, Brian Noehren, Christopher S Fry

Open access · greenAbstract read
In one paragraph

Article in The American journal of sports medicine, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 36 papers.

0numbers the graph read from it
0cells of the map it votes in
36citing papers in PubMed
3.8field-weighted citation impact, top 7% 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

36 citing papers in PubMed, 51 citations in OpenAlex.

  1. Trial
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  4. Article
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  7. Decreased Thigh Muscle Cross-Sectional Area Following Anterior Cruciate Ligament Injury Depends on Concomitant Meniscal Injury and Subject Sex.Journal of orthopaedic research : official publication of the Orthopaedic Research Society · 2026
    Article
  8. Article
  9. Muscle atrophy after ACL reconstruction involves molecular mechanisms beyond unloading.Journal of applied physiology (Bethesda, Md. : 1985) · 2026
    Article
  10. Article
  11. Review
  12. Zinc deficiency contributes to blunted myogenesis in chronic kidney disease.American journal of physiology. Cell physiology · 2026
    Article
  13. Review
  14. Article
  15. Overuse-Induced Muscle Disorder: Establishing a Rat Model to Unravel the Role of Fibro-Adipogenic Progenitor Cells in Intramuscular Fibrosis.Journal of orthopaedic research : official publication of the Orthopaedic Research Society · 2025
    Article
  16. Article
  17. Quadriceps Morphology 6- to 60-Months After Anterior Cruciate Ligament Tear.Scandinavian journal of medicine & science in sports · 2025
    Article
  18. Review
  19. Muscle-specific ERRγ activation mitigates muscle atrophy after ACL injury.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2025
    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

6 authors at 2 institutions in 1 country.

Bailey D PeckDepartment of Rehabilitation Health Sciences, University of Kentucky, Lexington, Kentucky, USA.
Camille R BrightwellDepartment of Nutrition and Metabolism, University of Texas Medical Branch, Galveston, Texas, USA.
Darren L JohnsonDepartment of Orthopedic Surgery and Sports Medicine, University of Kentucky, Lexington, Kentucky, USA.
Mary Lloyd IrelandDepartment of Orthopedic Surgery and Sports Medicine, University of Kentucky, Lexington, Kentucky, USA.
Brian NoehrenDepartment of Rehabilitation Health Sciences, University of Kentucky, Lexington, Kentucky, USA.
Christopher S FryDepartment of Nutrition and Metabolism, University of Texas Medical Branch, Galveston, Texas, USA.
University of Kentucky · USThe University of Texas Medical Branch at Galveston · US

Funding

UTMB OAIC Research Education Component (REC)P30AG024832 · NIA · UNIVERSITY OF TEXAS MEDICAL BR GALVESTON · PI JAMES S. GOODWIN, MD, MELISSA M. MORROW · 2005 to 2026
$26.7M
Myostatin Alters Muscle Composition as The Result of an ACL InjuryR01AR072061 · NIAMS · UNIVERSITY OF TEXAS MED BR GALVESTON · PI FRY, CHRISTOPHER · 2018 to 2023
$2.2M
Prolonged alterations to muscle following knee surgery and physical therapyK23AR062069 · NIAMS · UNIVERSITY OF KENTUCKY · PI NOEHREN, BRIAN · 2013 to 2017
$619k
NIAMS NIH HHS K23 AR062069NIAMS NIH HHS R01 AR072061NIA NIH HHS P30 AG024832
6 · The paper itself

Abstract

backgroundAnterior cruciate ligament (ACL) tears result in significant quadriceps muscle atrophy that is resistant to recovery despite extensive rehabilitation. Recent work suggests an elevated fibrotic burden in the quadriceps muscle after the injury, which may limit recovery. Elucidating the mechanisms and cell types involved in the progression of fibrosis is critical for developing new treatment strategies. PURPOSE: To identify factors contributing to the elevated fibrotic burden found after the injury. STUDY

designDescriptive laboratory study.

methodsAfter an ACL injury, muscle biopsy specimens were obtained from the injured and noninjured vastus lateralis of young adults (n = 14, mean ± SD: 23 ± 4 years). The expression of myostatin, transforming growth factor β, and other regulatory factors was measured, and immunohistochemical analyses were performed to assess turnover of extracellular matrix components.

resultsInjured limb skeletal muscle demonstrated elevated myostatin gene ( P < .005) and protein ( P < .0005) expression, which correlated ( R

conclusionThese findings support a role for myostatin in promoting fibrogenic alterations within skeletal muscle after an ACL injury. CLINICAL RELEVANCE: The current work shows that the cause of muscle quality decline after ACL injury likely involves elevated myostatin expression, and future studies should explore therapeutic inhibition of myostatin to facilitate improvements in muscle recovery and return to sport.

Indexed as

Activin Receptors, Type IIAdultAnterior Cruciate Ligament InjuriesCell ProliferationExtracellular MatrixFemaleFibroblastsHumansMaleMuscle, SkeletalMuscular AtrophyMyostatinQuadriceps MuscleYoung AdultActivin Receptors, Type IIACVR2B protein, humanMSTN protein, humanMyostatincollagenextracellular matrixfibroblastquadriceps

Identifiers

PMID30995070
PMCPMC6995871
OpenAlexW2938107432

What OpenQuestion holds

Textmetadata
LicenceTDM
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.