Evidence map›Paper›PMID 22164231›Full record

ArticlePloS one2011

Striking denervation of neuromuscular junctions without lumbar motoneuron loss in geriatric mouse muscle.

Ruth Jinfen Chai, Jana Vukovic, Sarah Dunlop, Miranda D Grounds, Thea Shavlakadze

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 140 papers.

0numbers the graph read from it
0cells of the map it votes in
140citing papers in PubMed
6.0field-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

140 citing papers in PubMed, 206 citations in OpenAlex.

  1. Article
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  5. Muscle fibre denervation in ageing.Clinical science (London, England : 1979) · 2026
    Review
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  17. LSMEM2, Localized at the Neuromuscular Junction, Modulates Mitochondrial Integration in Skeletal Muscles.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2025
    Article
  18. Article
  19. Article
  20. Article

80 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

5 authors at 2 institutions in 1 country.

Ruth Jinfen ChaiSchool of Anatomy and Human Biology, The University of Western Australia, Perth, Western Australia, Australia.
Jana Vukovic
Sarah Dunlop
Miranda D Grounds
Thea Shavlakadze
University of Western Australia · AUUniversity of Queensland · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Reasons for the progressive age-related loss of skeletal muscle mass and function, namely sarcopenia, are complex. Few studies describe sarcopenia in mice, although this species is the mammalian model of choice for genetic intervention and development of pharmaceutical interventions for muscle degeneration. One factor, important to sarcopenia-associated neuromuscular change, is myofibre denervation. Here we describe the morphology of the neuromuscular compartment in young (3 month) compared to geriatric (29 month) old female C57Bl/6J mice. There was no significant difference in the size or number of motoneuron cell bodies at the lumbar level (L1-L5) of the spinal cord at 3 and 29 months. However, in geriatric mice, there was a striking increase (by ∼2.5 fold) in the percentage of fully denervated neuromuscular junctions (NMJs) and associated deterioration of Schwann cells in fast extensor digitorum longus (EDL), but not in slow soleus muscles. There were also distinct changes in myofibre composition of lower limb muscles (tibialis anterior (TA) and soleus) with a shift at 29 months to a faster phenotype in fast TA muscle and to a slower phenotype in slow soleus muscle. Overall, we demonstrate complex changes at the NMJ and muscle levels in geriatric mice that occur despite the maintenance of motoneuron cell bodies in the spinal cord. The challenge is to identify which components of the neuromuscular system are primarily responsible for the marked changes within the NMJ and muscle, in order to selectively target future interventions to reduce sarcopenia.

Indexed as

AgingAnimalsFemaleLumbar VertebraeMiceMice, Inbred C57BLMotor NeuronsMuscle DenervationMuscle Fibers, Fast-TwitchMuscle Fibers, Slow-TwitchMuscle, SkeletalNeuromuscular JunctionPhenotypeSarcopeniaSchwann CellsSpinal Cord

Identifiers

PMID22164231
PMCPMC3229526
OpenAlexW2104007452

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.