Evidence map›Paper›PMID 27768799›Full record

ArticleInvestigative ophthalmology & visual science2016

Altered Protein Composition and Gene Expression in Strabismic Human Extraocular Muscles and Tendons.

Andrea B Agarwal, Cheng-Yuan Feng, Amy L Altick, David R Quilici, Dan Wen, L Alan Johnson, Christopher S von Bartheld

Open access · goldAbstract read
In one paragraph

Article in Investigative ophthalmology & visual science, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
34citing papers in PubMed, 1 pooled it
1.4field-weighted citation impact, top 20% 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

34 citing papers in PubMed, 1 synthesis or guideline pooled it, 48 citations in OpenAlex.

  1. Pooled it
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  9. Article
  10. Extreme Tolerance of Extraocular Muscles to Diseases and Aging: Why and How?International journal of molecular sciences · 2024
    Review
  11. Article
  12. Article
  13. Article
  14. Article
  15. Clinical significance of CTGF and Cry61 protein in extraocular muscles of strabismic patients.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2023
    Article
  16. Article
  17. Comitant strabismus etiology: extraocular muscle integrity and central nervous system involvement-a narrative review.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2023
    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

7 authors at 3 institutions in 2 countries.

Andrea B AgarwalDepartment of Physiology and Cell Biology, University of Nevada School of Medicine, Reno, Nevada, United States.
Cheng-Yuan FengDepartment of Physiology and Cell Biology, University of Nevada School of Medicine, Reno, Nevada, United States.
Amy L AltickDepartment of Physiology and Cell Biology, University of Nevada School of Medicine, Reno, Nevada, United States.
David R QuiliciMick Hitchcock Nevada Proteomics Center, University of Nevada, Reno, Nevada, United States.
Dan WenDepartment of Ophthalmology, Xiangya Hospital, Central South University, Changsha, China.
L Alan JohnsonDepartment of Physiology and Cell Biology, University of Nevada School of Medicine, Reno, Nevada, United States 4Sierra Eye Associates, Reno, Nevada, United States.
Christopher S von BartheldDepartment of Physiology and Cell Biology, University of Nevada School of Medicine, Reno, Nevada, United States.
University of Nevada, Reno · USSierra Eye Associates · USXiangya Hospital Central South University · CN

Funding

Outreach/Diversity/Pipeline ProjectP20GM103440 · NIGMS · UNIVERSITY OF NEVADA RENO · PI Julia Petereit · 2012 to 2026
$58.0M
Tracking and EvaluationU54GM104944 · NIGMS · UNIVERSITY OF NEVADA LAS VEGAS · PI MARCHAND, GWEN · 2013 to 2023
$39.6M
UNDERGRADUATE RESEARCH AND TRAININGP20RR016464 · NCRR · UNIVERSITY OF NEVADA RENO · PI REIBER, CARL · 2001 to 2011
$30.3M
Cell Biology of Signaling across MembranesP20GM103554 · NIGMS · UNIVERSITY OF NEVADA RENO · PI VON BARTHELD, CHRISTOPHER S · 2012 to 2016
$8.0M
NCRR NIH HHS P20 RR016464NIGMS NIH HHS P20 GM103440NIGMS NIH HHS P20 GM103554NIGMS NIH HHS U54 GM104944
6 · The paper itself

Abstract

purposeTo determine whether structural protein composition and expression of key regulatory genes are altered in strabismic human extraocular muscles.

methodsSamples from strabismic horizontal extraocular muscles were obtained during strabismus surgery and compared with normal muscles from organ donors. We used proteomics, standard and customized PCR arrays, and microarrays to identify changes in major structural proteins and changes in gene expression. We focused on muscle and connective tissue and its control by enzymes, growth factors, and cytokines.

resultsStrabismic muscles showed downregulation of myosins, tropomyosins, troponins, and titin. Expression of collagens and regulators of collagen synthesis and degradation, the collagenase matrix metalloproteinase (MMP)2 and its inhibitors, tissue inhibitor of metalloproteinase (TIMP)1 and TIMP2, was upregulated, along with tumor necrosis factor (TNF), TNF receptors, and connective tissue growth factor (CTGF), as well as proteoglycans. Growth factors controlling extracellular matrix (ECM) were also upregulated. Among 410 signaling genes examined by PCR arrays, molecules with downregulation in the strabismic phenotype included GDNF, NRG1, and PAX7; CTGF, CXCR4, NPY1R, TNF, NTRK1, and NTRK2 were upregulated. Signaling molecules known to control extraocular muscle plasticity were predominantly expressed in the tendon rather than the muscle component. The two horizontal muscles, medial and lateral rectus, displayed similar changes in protein and gene expression, and no obvious effect of age.

conclusionsQuantification of proteins and gene expression showed significant differences in the composition of extraocular muscles of strabismic patients with respect to important motor proteins, elements of the ECM, and connective tissue. Therefore, our study supports the emerging view that the molecular composition of strabismic muscles is substantially altered.

Indexed as

Gene ExpressionAdolescentAdultAgedChildChild, PreschoolFemaleHumansMaleMass SpectrometryMiddle AgedMuscle ProteinsOculomotor MusclesProteomicsReverse Transcriptase Polymerase Chain ReactionRNAMuscle ProteinsRNA

Identifiers

PMID27768799
PMCPMC5080916
OpenAlexW2535150474

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.