Evidence map›Paper›PMID 34226561›Full record

ArticleNature communications2021

Purkinje cell axonal swellings enhance action potential fidelity and cerebellar function.

Daneck Lang-Ouellette, Kim M Gruver, Amy Smith-Dijak, François G C Blot, Chloe A Stewart, Pauline de Vanssay de Blavous, Connie H Li, Carter Van Eitrem, Charlotte Rosen, Phyllis L Faust and 2 more

Open access · goldAbstract read
In one paragraph

Article in Nature communications, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
5.2field-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

21 citing papers in PubMed, 46 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Review
  5. Article
  6. Axonal pathology differentially affects human Purkinje cell subpopulations in the essential tremor cerebellum.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  7. Article
  8. Review
  9. Article
  10. Article
  11. Article
  12. Article
  13. Beyond a Transmission Cable-New Technologies to Reveal the Richness in Axonal Electrophysiology.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2024
    Review
  14. Article
  15. Review
  16. Article
  17. Article
  18. Unraveling axonal mechanisms of traumatic brain injury.Acta neuropathologica communications · 2022
    Article
  19. Article
  20. Essential tremor: Clinical perspectives and pathophysiology.Journal of the neurological sciences · 2022
    Review
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

12 authors at 3 institutions in 3 countries.

Daneck Lang-OuelletteBiology Department, McGill University, Montreal, QC, Canada.ORCID 0000-0002-8100-2678
Kim M Gruver *Biology Department, McGill University, Montreal, QC, Canada.ORCID 0000-0002-1740-0647
Amy Smith-Dijak *Biology Department, McGill University, Montreal, QC, Canada.ORCID 0000-0003-4763-2825
François G C BlotErasmus University Medical Center, Rotterdam, Netherlands.
Chloe A StewartBiology Department, McGill University, Montreal, QC, Canada.
Pauline de Vanssay de BlavousBiology Department, McGill University, Montreal, QC, Canada.ORCID 0000-0002-5786-7292
Connie H LiBiology Department, McGill University, Montreal, QC, Canada.ORCID 0000-0002-1485-1047
Carter Van EitremBiology Department, McGill University, Montreal, QC, Canada.ORCID 0000-0003-1412-3143
Charlotte RosenBiology Department, McGill University, Montreal, QC, Canada.ORCID 0000-0002-4897-7078
Phyllis L FaustDepartment of Pathology and Cell Biology, Columbia University, New York, NY, USA.ORCID 0000-0001-6533-7921
Martijn SchonewilleErasmus University Medical Center, Rotterdam, Netherlands.ORCID 0000-0002-2675-1393
Alanna J WattBiology Department, McGill University, Montreal, QC, Canada. alanna.watt@mcgill.ca.ORCID 0000-0002-6371-6220
McGill University · CAErasmus MC · NLColumbia University · US

Funding

CIHR 130570CIHR 153150
6 · The paper itself

Abstract

Axonal plasticity allows neurons to control their output, which critically determines the flow of information in the brain. Axon diameter can be regulated by activity, yet how morphological changes in an axon impact its function remains poorly understood. Axonal swellings have been found on Purkinje cell axons in the cerebellum both in healthy development and in neurodegenerative diseases, and computational models predicts that axonal swellings impair axonal function. Here we report that in young Purkinje cells, axons with swellings propagated action potentials with higher fidelity than those without, and that axonal swellings form when axonal failures are high. Furthermore, we observed that healthy young adult mice with more axonal swellings learn better on cerebellar-related tasks than mice with fewer swellings. Our findings suggest that axonal swellings underlie a form of axonal plasticity that optimizes the fidelity of action potential propagation in axons, resulting in enhanced learning.

Indexed as

Action PotentialsPurkinje CellsAnimalsAxonsBrainCerebellumFemaleLearningMaleMiceMice, Inbred C57BLNeurodegenerative Diseases

Identifiers

PMID34226561
PMCPMC8257784
OpenAlexW3181019798

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.