Evidence map›Paper›PMID 23904624›Full record

ArticleThe Journal of neuroscience : the official journal of the Society for Neuroscience2013

Selective effects of baclofen on use-dependent modulation of GABAB inhibition after tetraplegia.

Melissa D Barry, Karen L Bunday, Robert Chen, Monica A Perez

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of neuroscience : the official journal of the Society for Neuroscience, 2013. 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
3.8field-weighted citation impact, top 8% 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, 35 citations in OpenAlex.

  1. Trial
  2. Article
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  4. Clinical diagnostic utility of transcranial magnetic stimulation in neurological disorders. Updated report of an IFCN committee.Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology · 2023
    Review
  5. Review
  6. Article
  7. Article
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  10. Imbalanced Corticospinal and Reticulospinal Contributions to Spasticity in Humans with Spinal Cord Injury.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2019
    Article
  11. Article
  12. Article
  13. Article
  14. Review
  15. Article
  16. Article
  17. Article
  18. Article
  19. Challenges in Recruitment for the Study of Noninvasive Brain Stimulation in Stroke: Lessons from Deep Brain Stimulation.Journal of stroke and cerebrovascular diseases : the official journal of National Stroke Association · 2016
    Article
  20. 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

4 authors at 2 institutions in 2 countries.

Melissa D BarryUniversity of Pittsburgh, Department of Physical Medicine and Rehabilitation, Center for the Neural Basis of Cognition, Systems Neuroscience Institute, Pittsburgh, Pennsylvania 15261, USA.
Karen L Bunday
Robert Chen
Monica A Perez
University of Pittsburgh · USToronto Western Hospital · CA

Funding

Neural Control of Bilateral Hand and Arm Movements After Spinal Cord InjuryR01NS076589 · NINDS · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI PEREZ, MONICA A · 2011 to 2016
$1.6M
NINDS NIH HHS R01 NS076589NINDS NIH HHS R01-NS-076589-1
6 · The paper itself

Abstract

Baclofen is a GABAB receptor agonist commonly used to relief spasticity related to motor disorders. The effects of baclofen on voluntary motor output are limited and not yet understood. Using noninvasive transcranial magnetic and electrical stimulation techniques, we examined electrophysiological measures probably involving GABAB (long-interval intracortical inhibition and the cortical silent period) and GABAA (short-interval intracortical inhibition) receptors, which are inhibitory effects mediated by subcortical and cortical mechanisms. We demonstrate increased active long-interval intracortical inhibition and prolonged cortical silent period during voluntary activity of an intrinsic finger muscle in humans with chronic incomplete cervical spinal cord injury (SCI) compared with age-matched controls, whereas resting long-interval intracortical inhibition was unchanged. However, long-term (~6 years) use of baclofen decreased active long-interval intracortical inhibition to similar levels as controls but did not affect the duration of the cortical silent period. We found a correlation between signs of spasticity and long-interval intracortical inhibition in patients with SCI. Short-interval intracortical inhibition was decreased during voluntary contraction compared with rest but there was no effect of SCI or baclofen use. Together, these results demonstrate that baclofen selectively maintains use-dependent modulation of largely subcortical but not cortical GABAB neuronal pathways after human SCI. Thus, cortical GABA(B) circuits may be less sensitive to baclofen than spinal GABAB circuits. This may contribute to the limited effects of baclofen on voluntary motor output in subjects with motor disorders affected by spasticity.

Indexed as

AdultAnalysis of VarianceAntimanic AgentsBaclofenCase-Control StudiesCortical Spreading DepressionElectromyographyEvoked Potentials, MotorFemaleFingersGABA-B Receptor AgonistsHumansLithium ChlorideMaleMiddle AgedMotor CortexAntimanic AgentsBaclofenGABA-B Receptor AgonistsLithium Chloride

Identifiers

PMID23904624
PMCPMC3728695
OpenAlexW1996685266

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.