Stimulation of the cuneiform nucleus enables training and boosts recovery after spinal cord injury.
cuneiform nucleus
deep brain stimulation
mesencephalic locomotor region
rehabilitative training
spinal cord injury
Journal
Brain : a journal of neurology
ISSN: 1460-2156
Titre abrégé: Brain
Pays: England
ID NLM: 0372537
Informations de publication
Date de publication:
21 10 2022
21 10 2022
Historique:
received:
01
01
2022
revised:
07
04
2022
accepted:
04
05
2022
pubmed:
19
5
2022
medline:
26
10
2022
entrez:
18
5
2022
Statut:
ppublish
Résumé
Severe spinal cord injuries result in permanent paraparesis in spite of the frequent sparing of small portions of white matter. Spared fibre tracts are often incapable of maintaining and modulating the activity of lower spinal motor centres. Effects of rehabilitative training thus remain limited. Here, we activated spared descending brainstem fibres by electrical deep brain stimulation of the cuneiform nucleus of the mesencephalic locomotor region, the main control centre for locomotion in the brainstem, in adult female Lewis rats. We show that deep brain stimulation of the cuneiform nucleus enhances the weak remaining motor drive in highly paraparetic rats with severe, incomplete spinal cord injuries and enables high-intensity locomotor training. Stimulation of the cuneiform nucleus during rehabilitative aquatraining after subchronic (n = 8 stimulated versus n = 7 unstimulated versus n = 7 untrained rats) and chronic (n = 14 stimulated versus n = 9 unstimulated versus n = 9 untrained rats) spinal cord injury re-established substantial locomotion and improved long-term recovery of motor function. We additionally identified a safety window of stimulation parameters ensuring context-specific locomotor control in intact rats (n = 18) and illustrate the importance of timing of treatment initiation after spinal cord injury (n = 14). This study highlights stimulation of the cuneiform nucleus as a highly promising therapeutic strategy to enhance motor recovery after subchronic and chronic incomplete spinal cord injury with direct clinical applicability.
Identifiants
pubmed: 35583160
pii: 6587425
doi: 10.1093/brain/awac184
pmc: PMC9586551
doi:
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
3681-3697Informations de copyright
© The Author(s) 2022. Published by Oxford University Press on behalf of the Guarantors of Brain.
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