Evidence map›Paper›PMID 38099572›Full record

ArticleeLife2023

Silencing long-descending inter-enlargement propriospinal neurons improves hindlimb stepping after contusive spinal cord injuries.

Courtney T Shepard, Brandon L Brown, Morgan A Van Rijswijck, Rachel M Zalla, Darlene A Burke, Johnny R Morehouse, Amberly S Riegler, Scott R Whittemore, David S K Magnuson

Open access · goldAbstract read
In one paragraph

Article in eLife, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
5.4field-weighted citation impact, top 4% 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

14 citing papers in PubMed, 21 citations in OpenAlex.

  1. Article
  2. Article
  3. Functional recovery induced by KCC2-enabled relay pathways in completely injured spinal cords in adult rats.Proceedings of the National Academy of Sciences of the United States of America · 2025
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  10. Review
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  13. Neuroplasticity and regeneration after spinal cord injury.North American Spine Society journal · 2023
    Article
  14. Spinal control of locomotion before and after spinal cord injury.bioRxiv : the preprint server for biology · 2023
    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

9 authors at 1 institution in 1 country.

Courtney T ShepardInterdisciplinary Program in Translational Neuroscience, School of Interdisciplinary and Graduate Studies, University of Louisville, Louisville, United States.
Brandon L BrownInterdisciplinary Program in Translational Neuroscience, School of Interdisciplinary and Graduate Studies, University of Louisville, Louisville, United States.
Morgan A Van RijswijckKentucky Spinal Cord Injury Research Center, University of Louisville, Louisville, United States.
Rachel M ZallaKentucky Spinal Cord Injury Research Center, University of Louisville, Louisville, United States.
Darlene A BurkeKentucky Spinal Cord Injury Research Center, University of Louisville, Louisville, United States.
Johnny R MorehouseKentucky Spinal Cord Injury Research Center, University of Louisville, Louisville, United States.
Amberly S RieglerKentucky Spinal Cord Injury Research Center, University of Louisville, Louisville, United States.
Scott R WhittemoreInterdisciplinary Program in Translational Neuroscience, School of Interdisciplinary and Graduate Studies, University of Louisville, Louisville, United States.ORCID 0000-0001-6437-7200
David S K MagnusonInterdisciplinary Program in Translational Neuroscience, School of Interdisciplinary and Graduate Studies, University of Louisville, Louisville, United States.ORCID 0000-0003-3816-3676
University of Louisville · US

Funding

Propriopsinal neuron function in normal and post-SCI locomotionR01NS112304 · NINDS · UNIVERSITY OF LOUISVILLE · PI Simon Michael Danner, David SK Magnuson · 2021 to 2026
$3.0M
Functional consequences of silencing propriospinal pathways after SCI in the adult ratR01NS089324 · NINDS · UNIVERSITY OF LOUISVILLE · PI MAGNUSON, DAVID SK, WHITTEMORE, SCOTT R · 2015 to 2019
$2.0M
The effects of activity on propriospinal neuron morphology and connectivityF31NS116935 · NINDS · UNIVERSITY OF LOUISVILLE · PI BROWN, BRANDON LEE · 2020 to 2023
$95k
NINDS NIH HHS F31 NS116935NINDS NIH HHS R01 NS089324NINDS NIH HHS R01 NS112304NINDS NIH HHS R01 NS112304-01
6 · The paper itself

Abstract

Spinal locomotor circuitry is comprised of rhythm generating centers, one for each limb, that are interconnected by local and long-distance propriospinal neurons thought to carry temporal information necessary for interlimb coordination and gait control. We showed previously that conditional silencing of the long ascending propriospinal neurons (LAPNs) that project from the lumbar to the cervical rhythmogenic centers (L1/L2 to C6), disrupts right-left alternation of both the forelimbs and hindlimbs without significantly disrupting other fundamental aspects of interlimb and speed-dependent coordination (Pocratsky et al., 2020). Subsequently, we showed that silencing the LAPNs after a moderate thoracic contusive spinal cord injury (SCI) resulted in better recovered locomotor function (Shepard et al., 2021). In this research advance, we focus on the descending equivalent to the LAPNs, the long descending propriospinal neurons (LDPNs) that have cell bodies at C6 and terminals at L2. We found that conditional silencing of the LDPNs in the intact adult rat resulted in a disrupted alternation of each limb pair (forelimbs and hindlimbs) and after a thoracic contusion SCI significantly improved locomotor function. These observations lead us to speculate that the LAPNs and LDPNs have similar roles in the exchange of temporal information between the cervical and lumbar rhythm generating centers, but that the partial disruption of the pathway after SCI limits the independent function of the lumbar circuitry. Silencing the LAPNs or LDPNs effectively permits or frees-up the lumbar circuitry to function independently.

Indexed as

ContusionsSpinal Cord InjuriesAnimalsHindlimbLocomotionLower ExtremityNeuronsRatsSpinal Cordlocomotionneurosciencepropriospinal neuronratspinal cord injurysynaptic silencing

Identifiers

PMID38099572
PMCPMC10776087
OpenAlexW4389784769

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.