Paraplegia - New Insights DOI

IntechOpen eBooks, Journal Year: 2022, Volume and Issue: unknown

Published: Oct. 21, 2022

Paraplegia - New Insights reviews different and complementary aspects of one the most common catastrophic conditions. The book, edited organized into five chapters, covers interesting frequently encountered scientific material on spinal cord injury paraplegia. It is hoped that readers will not only find answers to some their questions but also gain a detailed understanding paraplegia holistic approaches its treatment.

Language: Английский

Spinal cord injury: molecular mechanisms and therapeutic interventions DOI Creative Commons
Xiao Hu, Wei Xu, Yilong Ren

et al.

Signal Transduction and Targeted Therapy, Journal Year: 2023, Volume and Issue: 8(1)

Published: June 26, 2023

Abstract Spinal cord injury (SCI) remains a severe condition with an extremely high disability rate. The challenges of SCI repair include its complex pathological mechanisms and the difficulties neural regeneration in central nervous system. In past few decades, researchers have attempted to completely elucidate mechanism identify effective strategies promote axon circuit remodeling, but results not been ideal. Recently, new SCI, especially interactions between immune cell responses, revealed by single-cell sequencing spatial transcriptome analysis. With development bioactive materials stem cells, more attention has focused on forming intermediate networks reconstruction than promoting axonal corticospinal tract. Furthermore, technologies control physical parameters such as electricity, magnetism ultrasound constantly innovated applied fate regulation. Among these advanced novel technologies, therapy, biomaterial transplantation, electromagnetic stimulation entered into stage clinical trials, some them already treatment. this review, we outline overall epidemiology pathophysiology expound latest research progress related detail, propose future directions for applications.

Language: Английский

Citations

309

Functional contribution of mesencephalic locomotor region nuclei to locomotor recovery after spinal cord injury DOI Creative Commons
Marie Roussel,

David Lafrance-Zoubga,

Nicolas Josset

et al.

Cell Reports Medicine, Journal Year: 2023, Volume and Issue: 4(2), P. 100946 - 100946

Published: Feb. 1, 2023

Spinal cord injury (SCI) results in a disruption of information between the brain and spinal circuit. Electrical stimulation mesencephalic locomotor region (MLR) can promote recovery acute chronic SCI rodent models. Although clinical trials are currently under way, there is still debate about organization this supraspinal center which anatomic correlate MLR should be targeted to recovery. Combining kinematics, electromyographic recordings, analysis, mouse genetics, our study reveals that glutamatergic neurons cuneiform nucleus contribute by enhancing motor efficacy hindlimb muscles, increasing rhythm speed on treadmill, over ground, during swimming mice. In contrast, pedunculopontine slow down locomotion. Therefore, identifies its as therapeutical target improve patients living with SCI.

Language: Английский

Citations

13

Stimulation of the cuneiform nucleus enables training and boosts recovery after spinal cord injury DOI Creative Commons

Anna‐Sophie Hofer,

Myriam I. Scheuber, Andrea M. Sartori

et al.

Brain, Journal Year: 2022, Volume and Issue: 145(10), P. 3681 - 3697

Published: May 18, 2022

Abstract Severe spinal cord injuries result in permanent paraparesis spite of the frequent sparing small portions white matter. Spared fibre tracts are often incapable maintaining and modulating activity lower motor centres. Effects rehabilitative training thus remain limited. Here, we activated spared descending brainstem fibres by electrical deep brain stimulation cuneiform nucleus mesencephalic locomotor region, main control centre for locomotion brainstem, adult female Lewis rats. We show that enhances weak remaining drive highly paraparetic rats with severe, incomplete enables high-intensity training. Stimulation during aquatraining after subchronic (n = 8 stimulated versus n 7 unstimulated untrained rats) chronic 14 9 injury re-established substantial improved long-term recovery function. additionally identified a safety window parameters ensuring context-specific intact 18) illustrate importance timing treatment initiation 14). This study highlights as promising therapeutic strategy to enhance direct clinical applicability.

Language: Английский

Citations

19

Deep Brain Stimulation and Brain–Spine Interface for Functional Restoration in Spinal Cord Injury DOI Creative Commons

Barnabas T. Shiferaw,

Max Y. Jin, Milan Patel

et al.

Biomedicines, Journal Year: 2025, Volume and Issue: 13(3), P. 631 - 631

Published: March 5, 2025

Background/Objectives: Spinal cord injury (SCI) presents significant challenges in restoring motor function, with limited therapeutic options available. Recent advancements neuromodulation technologies, such as brain-spine interface (BSI), epidural electrical stimulation (EES), and deep brain (DBS), offer promising solutions. This review article explores the integration of these approaches, focusing on their potential to restore function SCI patients. Findings: DBS has shown efficacy treatment several sites identified, including nucleus raphe magnus (NRM) periaqueductal gray (PAG). However, transitioning from animal human studies highlights challenges, technical risks targeting NRM humans instead rodent models. Additionally, other regions have for rehabilitation, midbrain locomotor region (MLR) pathways, cuneiform (CnF), pedunculopontine (PPN), lateral hypothalamic. EES further supports recovery SCI; however, this approach requires high-DBS amplitude, serotonergic pharmacotherapy, cortical activity decoding attenuate stress-associated locomotion. BSI combined recently emerged a novel therapy. Although are limited, models provided evidence supporting its potential. Despite advancements, effectiveness systems remains cases complete central denervation. Conclusions: The combination DBS, BSI, represent transformational treating patients SCI. While research is needed optimize strategies, hold immense improving quality life advancing field neuromodulation.

Language: Английский

Citations

0

Activation of hypothalamic-pontine-spinal pathway promotes locomotor initiation and functional recovery after spinal cord injury in mice DOI Creative Commons
Yi Li,

Chengyue Ji,

Y. Zhang

et al.

Research Square (Research Square), Journal Year: 2025, Volume and Issue: unknown

Published: March 25, 2025

Abstract The hypothalamus is critical for regulating behaviors essential survival and locomotion, but how it integrates internal needs transmits locomotion commands to the spinal cord (SC) remains unclear. We found that glutamatergic neurons in lateral hypothalamic area (LHA) are motivated locomotor activity. Using single-neuron projectome analysis, trans-synaptic tracing, optogenetic manipulation, we showed LHA facilitates during food seeking via pontine oral part (PnO) projection neurons, rather than direct SC projections or indirect stress signaling medial septum diagonal band. Activating PnO-SC also initiated locomotion. Importantly, LHA-PnO were crucial recovery following mouse injury (SCI). Motor cortex signals gated deep brain stimulation treatment markedly promoted long-term restoration of hindlimb motor functions after severe SCI. Thus, have identified a hypothalamic-pontine-spinal pathway paradigm potential therapeutic intervention

Language: Английский

Citations

0

Cholinergic Modulation of Locomotor Circuits in Vertebrates DOI Open Access
D. Le Ray, Sandrine S. Bertrand, Réjean Dubuc

et al.

International Journal of Molecular Sciences, Journal Year: 2022, Volume and Issue: 23(18), P. 10738 - 10738

Published: Sept. 14, 2022

Locomotion is a basic motor act essential for survival. Amongst other things, it allows animals to move in their environment seek food, escape predators, or mates reproduction. The neural mechanisms involved the control of locomotion have been examined many vertebrate species and clearer picture progressively emerging. muscle synergies responsible propulsion are generated by networks located spinal cord. In turn, descending supraspinal inputs starting, maintaining, stopping as well steering controlling speed. Several neurotransmitter systems play crucial role modulating activity during locomotion. For instance, cholinergic both at levels underlying focus present review. Much information gained on modulation was obtained from lamprey model. Nicotinic increase level excitation brainstem command neurons, reticulospinal neurons (RSNs), whereas muscarinic activate select group hindbrain that project RSNs boost excitation. Muscarinic also reduce transmission sensory brainstem, phenomenon could help sustaining goal directed cord, intrinsic strongly modulate interneurons motoneurons locomotor output. Altogether, review underlines importance vertebrates.

Language: Английский

Citations

16

The Mesencephalic Locomotor Region: Multiple Cell Types, Multiple Behavioral Roles, and Multiple Implications for Disease DOI Creative Commons
Dimitri Ryczko

The Neuroscientist, Journal Year: 2022, Volume and Issue: 30(3), P. 347 - 366

Published: Dec. 28, 2022

The mesencephalic locomotor region (MLR) controls locomotion in vertebrates. In humans with Parkinson disease, deficits are increasingly associated decreased activity the MLR. This brainstem region, commonly considered to include cuneiform and pedunculopontine nuclei, has been explored as a target for deep brain stimulation improve function, but results variable, from modest promising. However, MLR is heterogeneous structure, identification of best cell type only beginning. Here, I review studies that uncovered role genetically defined types, highlight cells whose activation improves function animal models disease. promising types activate comprise some glutamatergic neurons caudal well cholinergic nucleus. Activation GABAergic should be avoided, since they stop or evoke bouts flanked numerous stops. also potential spinal cord injury, supranuclear palsy, primary progressive freezing gait, stroke. Better targeting achieved through optimized protocols, pharmacotherapy, development optogenetics human use.

Language: Английский

Citations

15

Brain region changes following a spinal cord injury DOI

Zhiwu Wu,

Kaiming Feng,

Jinqing Huang

et al.

Neurochemistry International, Journal Year: 2024, Volume and Issue: 174, P. 105696 - 105696

Published: Feb. 12, 2024

Language: Английский

Citations

2

DBS in the restoration of motor functional recovery following spinal cord injury DOI Creative Commons
Wenyuan Li, Wenrui Qu, Yi Li

et al.

Frontiers in Neurology, Journal Year: 2024, Volume and Issue: 15

Published: Dec. 4, 2024

The landscape of therapeutic deep brain stimulation (DBS) for locomotor function recovery is rapidly evolving. This review provides an overview electrical neuromodulation effects on spinal cord injury (SCI), focusing DBS motor functional in human and animal models. We highlight research providing insight into underlying cellular molecular mechanisms. A literature via Web Science PubMed databases from 1990 to May 29, 2024, reveals a growing body evidence SCI recovery. Advances techniques like optogenetics whole-brain tractogram have helped elucidate Neuronal targets sites include the mesencephalic region (MLR), cuneiform nucleus (CNF), raphe magnus (NRG), with pedunculopontine (PPN), periaqueductal gray (PAG), ventroposterolateral thalami (VPL) post-injury treatment. Radiologically guided optimization combination therapy classical rehabilitation become effective method, though ongoing interventional trials are needed enhance understanding validate efficacy SCI. On pre-clinical front, standardization approaches essential quality safety efficacy. Mapping optimizing protocols, aided by combined medical imaging, critical endeavors. Overall, holds promise neurological after SCI, akin other approaches.

Language: Английский

Citations

2

Application of Vagus Nerve Stimulation in Spinal Cord Injury Rehabilitation DOI Open Access
Mohammad Sadegh Fallahi, Sina Azadnajafabad, Seyed Farzad Maroufi

et al.

World Neurosurgery, Journal Year: 2023, Volume and Issue: 174, P. 11 - 24

Published: Feb. 28, 2023

Language: Английский

Citations

4