脊髓组织的区域生物力学表征:动态的机械反应
Chen Jin1,2,3, Jiang-Ming Yu1,2,3, Ran Li4
1Laboratory of Key Technology and Materials in Minimally Invasive Spine Surgery, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
Frontiers in bioengineering and biotechnology
|September 2, 2024
概括
本研究使用动态机械分析 (DMA) 来描述脊髓组织的动态机械特性. 胸部脊髓组织比宫或腰部区域更为刚硬,为脊髓损伤研究提供了洞察力.
科学领域:
- 生物力学 生物力学
- 神经科学是一个神经科学.
- 材料科学 材料科学 材料科学
背景情况:
- 了解脊髓损伤 (SCI) 机制需要描述动态机械特性.
- 脊髓组织的粘弹性属性是复杂的,并且由于固有的异质性而未被充分探索.
- 脊髓生物力学的区域差异对于伤害研究至关重要.
研究的目的:
- 研究脊髓组织生物机械性质的区域差异.
- 建立一个机械表征方法,用于ex vivo脊髓组织.
- 量化粘弹性特性和响应特征取决于解剖起源.
主要方法:
- 动态机械分析 (DMA) 用于脊髓组织的体外测量.
- 负载-卸载循环被应用在各种阴影频率 (0.051.00 Hz) 死亡后.
- 分析了关键的响应特征,如非线性,速率依赖,歇斯底里和条件.
主要成果:
- 脊髓组织表现出非线性,速率依赖,歇斯底里和调节效应.
- 复杂模量值随着测试频率的增加而非线性增加.
- 胸部脊髓组织比宫或腰部区域显著更为刚硬 (1.5x模量).
- 坦河三角洲值表明各地区粘弹性减缓的差异.
结论:
- 脊髓机械特性存在区域差异,胸部区域是最硬的.
- 这些发现为比较健康和患病的脊髓提供了基础.
- 该研究有助于脊髓支架的发展,并推进神经科学知识.
相关概念视频
The Spinal Cord
The spinal cord is the body’s major nerve tract of the central nervous system, communicating afferent sensory information from the periphery to the brain and efferent motor information from the brain to the body. The human spinal cord extends from the hole at the base of the skull, or foramen magnum, to the level of the first or second lumbar vertebra.
Spinal Cord: Cross-sectional Anatomy
The cross-sectional anatomy of the spinal cord offers a detailed view of its complex structure and function within the central nervous system. At the core of the spinal cord lies the gray matter, characterized by its butterfly or "H"-shaped appearance in cross-section. This central region is enveloped by white matter, with the overall structure divided into symmetrical halves by the dorsal median sulcus and the ventral median fissure.
Gray Matter and its Components
Central to the gray matter is...
Gray Matter and its Components
Central to the gray matter is...
Spinal Cord
The spinal cord, a critical component of the central nervous system, extends from the base of the brainstem to the lumbar region of the vertebral column. It is essential for maintaining physical stability and facilitating communication between the brain and peripheral parts of the body.


