Evidence map›Paper›PMID 33895959›Full record

ArticleGeroScience2021

Profiling age-related muscle weakness and wasting: neuromuscular junction transmission as a driver of age-related physical decline.

Carlos J Padilla, Markus E Harrigan, Hallie Harris, Jan M Schwab, Seward B Rutkove, Mark M Rich, Brian C Clark, W David Arnold

Erratum issuedOpen access · greenAbstract read
In one paragraph

Article in GeroScience, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 47 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
47citing papers in PubMed, 1 pooled it
4.1field-weighted citation impact, top 5% 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

47 citing papers in PubMed, 1 synthesis or guideline pooled it, 60 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Review
  10. Article
  11. The Neuromuscular Junction: A Shared Vulnerability in Aging and Disease.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2025
    Review
  12. Article
  13. 5-HTGeroScience · 2025
    Article
  14. Review
  15. MuSK Regulates Neuromuscular Junction Nav1.4 Localization and Excitability.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2025
    Article
  16. Review
  17. Article
  18. Review
  19. Neuromuscular impairment at different stages of human sarcopenia.Journal of cachexia, sarcopenia and muscle · 2024
    Article
  20. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

8 authors at 3 institutions in 1 country.

Carlos J PadillaDivision of Neuromuscular Diseases, Department of Neurology, The Ohio State University Wexner Medical Center, 1060 Carmack Road, Room 207, Columbus, OH, 43210, USA.
Markus E HarriganDivision of Neuromuscular Diseases, Department of Neurology, The Ohio State University Wexner Medical Center, 1060 Carmack Road, Room 207, Columbus, OH, 43210, USA.
Hallie HarrisDivision of Neuromuscular Diseases, Department of Neurology, The Ohio State University Wexner Medical Center, 1060 Carmack Road, Room 207, Columbus, OH, 43210, USA.
Jan M SchwabDivision of Neuromuscular Diseases, Department of Neurology, The Ohio State University Wexner Medical Center, 1060 Carmack Road, Room 207, Columbus, OH, 43210, USA.
Seward B RutkoveDepartment of Neurology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA.
Mark M RichDepartment of Neuroscience, Cell Biology and Physiology, Wright State University, Dayton, OH, 45435, USA.
Brian C ClarkDepartment of Biomedical Sciences, Ohio Musculoskeletal and Neurological Institute, Athens, OH, 45701, USA.
W David ArnoldDivision of Neuromuscular Diseases, Department of Neurology, The Ohio State University Wexner Medical Center, 1060 Carmack Road, Room 207, Columbus, OH, 43210, USA. william.arnold@osumc.edu.ORCID http://orcid.org/0000-0001-9889-7036
The Ohio State University Wexner Medical Center · USBeth Israel Deaconess Medical Center · USWright State University · US

Funding

Novel Approaches to Therapy of Muscle Ion ChannelopathiesR01AR074985 · NIAMS · WRIGHT STATE UNIVERSITY · PI MARK M RICH · 2019 to 2026
$3.9M
Reducing Infection Susceptibility by Immune Function Restoration in Spinal Cord InjuryR01NS118200 · NINDS · OHIO STATE UNIVERSITY · PI SCHWAB, JAN · 2020 to 2024
$1.9M
Neural mechanisms of dynapeniaR01AG044424 · NIA · OHIO UNIVERSITY ATHENS · PI CLARK, BRIAN C · 2014 to 2018
$1.4M
The Role of SMN in Aging Related Weakness: A Novel Therapeutic TargetR56AG055795 · NIA · OHIO STATE UNIVERSITY · PI ARNOLD, WILLIAM DAVID · 2019 to 2019
$504k
Social Isolation and Loss of Physical Function: Defining a Novel Neuromuscular PhenotypeR03AG067387 · NIA · OHIO STATE UNIVERSITY · PI ARNOLD, WILLIAM DAVID · 2020 to 2021
$156k
ACL HHS 90SI5020NIAMS NIH HHS R01 AR074985NIA NIH HHS R01 AG044424NIA NIH HHS R03 AG067387NIA NIH HHS R56 AG055795NINDS NIH HHS R01 NS118200
6 · The paper itself

Abstract

Pathological age-related loss of skeletal muscle strength and mass contribute to impaired physical function in older adults. Factors that promote the development of these conditions remain incompletely understood, impeding development of effective and specific diagnostic and therapeutic approaches. Inconclusive evidence across species suggests disruption of action potential signal transmission at the neuromuscular junction (NMJ), the crucial connection between the nervous and muscular systems, as a possible contributor to age-related muscle dysfunction. Here we investigated age-related loss of NMJ function using clinically relevant, electrophysiological measures (single-fiber electromyography (SFEMG) and repetitive nerve stimulation (RNS)) in aged (26 months) versus young (6 months) F344 rats. Measures of muscle function (e.g., grip strength, peak plantarflexion contractility torque) and mass were assessed for correlations with physiological measures (e.g., indices of NMJ transmission). Other outcomes also included plantarflexion muscle contractility tetanic torque fade during 1-s trains of stimulation as well as gastrocnemius motor unit size and number. Profiling NMJ function in aged rats identified significant declines in NMJ transmission stability and reliability. Further, NMJ deficits were tightly correlated with hindlimb grip strength, gastrocnemius muscle weight, loss of peak contractility torque, degree of tetanic fade, and motor unit loss. Thus, these findings provide direct evidence for NMJ dysfunction as a potential mechanism of age-related muscle dysfunction pathogenesis and severity. These findings also suggest that NMJ transmission modulation may serve as a target for therapeutic development for age-related loss of physical function.

Indexed as

Muscle WeaknessNeuromuscular JunctionAnimalsElectromyographyRatsRats, Inbred F344Reproducibility of ResultsAgingDynapeniaGrip strengthNeuromuscular junctionSarcopeniaSynapseWeakness

Identifiers

PMID33895959
PMCPMC8190265
OpenAlexW3157050679

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.