脊髓损伤后加强:在走路时克服障碍物
Alain Frigon1, Charly G Lecomte
1Department of Pharmacology-Physiology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Centre de recherche du Centre Hospitalier Universitaire de Sherbrooke, Sherbrooke, QC, Canada.
Neural regeneration research
|September 10, 2024
概括
脊髓损伤会破坏大脑和脊髓之间的沟通,损害障碍物谈判. 本综述探讨了跨越障碍物和受伤后恢复的神经机械控制.
科学领域:
- 神经科学是一个神经科学.
- 生物力学 生物力学
- 发动机控制器的控制器
背景情况:
- 步态修改对于日常障碍物谈判至关重要.
- 脊髓损伤 (SCI) 严重影响跨越障碍物的能力.
- 跨越障碍物涉及到大脑区域的复杂的感觉运动转换,如头顶皮层,前运动皮层和运动皮层.
研究的目的:
- 为了审查跨越障碍物的神经机械控制.
- 为了解释SCI后的障碍踩踏失败.
- 讨论SCI后的障碍踩踏恢复的程度.
主要方法:
- 本综述综合了关于神经控制运动和避开障碍物的现有研究.
- 它检查了SCI对感觉运动通路的影响.
- 该审查讨论了与运动恢复和适应相关的发现.
主要成果:
- SCI破坏了大脑发送自发步态修改的运动指令的能力.
- 在SCI之后,大脑和脊髓之间的双向通信受到损害.
- 有SCI的动物和人类努力自愿调整肢体轨迹以清除障碍物.
结论:
- 了解跨越障碍物的神经机械基础对于SCI后的康复至关重要.
- 大脑 - 脊髓通信的破坏是SCI后运动缺陷的关键因素.
- 障碍物跨越能力的部分恢复可能会发生,突出潜在的治疗目标.
相关概念视频
Spinal Cord Injury ll: Pathophysiology
Spinal cord injury progresses through two interconnected phases: primary injury and secondary injury.Primary InjuryPrimary injury happens at the moment of trauma and involves immediate mechanical damage to the spinal cord.Compression happens when broken vertebrae, herniated discs, or accumulating blood (such as a hematoma) press directly against the spinal cord, distorting its normal shape and function. In cases of contusion, the cord is bruised by a blunt force (like penetrating injuries or...
Secondary Spinal Cord Injury llI: Pathophysiology
Early Ischemia and Ionic ImbalanceWithin minutes of spinal cord injury, a secondary cascade begins, progressing over hours to weeks. Vascular damage reduces blood flow, causing ischemia and mitochondrial dysfunction. ATP depletion leads to ion pump failure, membrane depolarization, sodium influx, potassium efflux, and water accumulation, resulting in cellular swelling. Increased intracellular calcium further disrupts mitochondria and accelerates cellular injury.Excitotoxicity and Neuronal...


