Evidence map›Paper›PMID 20226849›Full record

ArticleExperimental gerontology2010

Remodeling of the neuromuscular junction precedes sarcopenia related alterations in myofibers.

Michael R Deschenes, Mackenzie A Roby, Margaret K Eason, M Brennan Harris

Open access · bronzeAbstract read
In one paragraph

Article in Experimental gerontology, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 119 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
119citing papers in PubMed, 2 pooled it
3.8field-weighted citation impact, top 6% 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

119 citing papers in PubMed, 2 syntheses or guidelines pooled it, 188 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Trial
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Review
  10. Review
  11. Article
  12. Review
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Neuromuscular impairment at different stages of human sarcopenia.Journal of cachexia, sarcopenia and muscle · 2024
    Article

59 more citing papers are in PubMed but not listed here.

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

4 authors at 1 institution in 1 country.

Michael R DeschenesDepartment of Kinesiology and Health Sciences, The College of William & Mary, Williamsburg, VA 23187-8795, USA. mrdesc@wm.edu
Mackenzie A Roby
Margaret K Eason
M Brennan Harris
Williams (United States) · US

Funding

Pre-habilitation of Aged and Young Neuromuscular SystemsR15AG017440 · NIA · COLLEGE OF WILLIAM AND MARY · PI DESCHENES, MICHAEL R · 2001 to 2005
$331k
Howard Hughes Medical InstituteNIA NIH HHS R15 AG017440NIA NIH HHS R15 AG17440
6 · The paper itself

Abstract

Several mechanisms contributing to the etiology of sarcopenia (age-related loss of muscle size) have been postulated. One of these attributes the loss of muscle mass to a preceding age-related denervation of myofibers. The aim of this study was to determine if signs of denervation were apparent at the neuromuscular junction (NMJ) before fiber atrophy, or fiber type conversion could be documented, and to reveal if a muscle's activity level impacts its sensitivity to age-related denervation. Plantaris and soleus muscles were obtained from young adult (10 months) and early aged (21 months) rats. Pre- and post-synaptic NMJ morphology was quantified with cytofluorescent staining of nerve terminal branches and endplate regions, respectively. Myofiber profiles (fiber size and fiber type composition) were assessed with histochemical procedures. Results show that in the lightly recruited plantaris, significant (P<0.05) signs of denervation were noted in aged rats, while the same muscles displayed no change in myofiber profile. In the heavily recruited soleus, however, there was little evidence of denervation, and again no alterations in myofiber profile. These results indicate that age-related denervation occurs before myofiber atrophy, and that high amounts of neuromuscular activity may delay the onset of age-related denervation and sarcopenia.

Indexed as

AgingAnimalsAtrophyBody WeightMaleMuscle Fibers, Fast-TwitchMuscle Fibers, Slow-TwitchNeuromuscular JunctionOrgan SizeRatsRats, Inbred F344

Identifiers

PMID20226849
PMCPMC2854317
OpenAlexW2044586724

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.