Evidence map›Paper›PMID 23349859›Full record

ArticlePloS one2013

Passive exercise of the hind limbs after complete thoracic transection of the spinal cord promotes cortical reorganization.

Alessandro Graziano, Guglielmo Foffani, Eric B Knudsen, Jed Shumsky, Karen A Moxon

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed, 1 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

22 citing papers in PubMed, 1 synthesis or guideline pooled it, 41 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. Article
  4. Review
  5. Article
  6. Review
  7. Article
  8. Review
  9. Article
  10. Article
  11. Article
  12. Review
  13. Review
  14. Teaching Adult Rats Spinalized as Neonates to Walk Using Trunk Robotic Rehabilitation: Elements of Success, Failure, and Dependence.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2016
    Article
  15. Article
  16. Review
  17. Article
  18. Review
  19. Dissociating movement from movement timing in the rat primary motor cortex.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2014
    Article
  20. Article
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 2 countries.

Alessandro GrazianoDepartment of Physiology and Pharmacology, Drexel University College of Medicine, Philadelphia, Pennsylvania, USA. Alessandro.Graziano@DrexelMed.edu
Guglielmo Foffani
Eric B Knudsen
Jed Shumsky
Karen A Moxon
Drexel University · USServicio de Salud de Castilla La Mancha · ES

Funding

SurgeryP01NS055976 · NINDS · DREXEL UNIVERSITY · PI TOM, VERONICA JEAN · 2007 to 2017
$12.3M
NINDS NIH HHS P01 NS 055976NINDS NIH HHS P01 NS055976NINDS NIH HHS R01 NS05741
6 · The paper itself

Abstract

Physical exercise promotes neural plasticity in the brain of healthy subjects and modulates pathophysiological neural plasticity after sensorimotor loss, but the mechanisms of this action are not fully understood. After spinal cord injury, cortical reorganization can be maximized by exercising the non-affected body or the residual functions of the affected body. However, exercise per se also produces systemic changes - such as increased cardiovascular fitness, improved circulation and neuroendocrine changes - that have a great impact on brain function and plasticity. It is therefore possible that passive exercise therapies typically applied below the level of the lesion in patients with spinal cord injury could put the brain in a more plastic state and promote cortical reorganization. To directly test this hypothesis, we applied passive hindlimb bike exercise after complete thoracic transection of the spinal cord in adult rats. Using western blot analysis, we found that the level of proteins associated with plasticity - specifically ADCY1 and BDNF - increased in the somatosensory cortex of transected animals that received passive bike exercise compared to transected animals that received sham exercise. Using electrophysiological techniques, we then verified that neurons in the deafferented hindlimb cortex increased their responsiveness to tactile stimuli delivered to the forelimb in transected animals that received passive bike exercise compared to transected animals that received sham exercise. Passive exercise below the level of the lesion, therefore, promotes cortical reorganization after spinal cord injury, uncovering a brain-body interaction that does not rely on intact sensorimotor pathways connecting the exercised body parts and the brain.

Indexed as

ExerciseAdenylyl CyclasesAnimalsAnimals, NewbornBrain-Derived Neurotrophic FactorBrain MappingCerebral CortexHindlimbHumansNeuronal PlasticityNeuronsPhysical Conditioning, AnimalRatsRats, Sprague-DawleySomatosensory CortexSpinal Cordadenylyl cyclase 1Adenylyl CyclasesBrain-Derived Neurotrophic Factor

Identifiers

PMID23349859
PMCPMC3551921
OpenAlexW2168217335

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.