在低幅度高频振动下对骨细胞动态反应的参数依赖性进行模拟研究
Haiying Liu1, Mingzhi Li1, Shenggang Li1
1Tianjin Key Laboratory for Advanced Mechatronic System Design and Intelligent Control, School of Mechanical Engineering, Tianjin University of Technology, Tianjin 300384, PR China; National Demonstration Center for Experimental Mechanical and Electrical Engineering Education, Tianjin University of Technology, Tianjin 300384, PR China.
Medical engineering & physics
|March 8, 2025
概括
全身低振幅高频振动 (LMHFV) 可以积极影响骨细胞机械微环境. 优化的振动参数通过改善流体压力和剪切应力来增强细胞生物活性,支持骨健康.
科学领域:
- 生物医学工程 生物医学工程
- 机械生物学 机械生物学
- 细胞生物力学 细胞生物力学
背景情况:
- 骨细胞是骨中的关键机械传感器,对机械刺激有动态反应.
- 了解骨细胞对全身振动的反应对于骨健康干预至关重要.
- 低振幅高频振动 (LMHFV) 是治疗骨疾病的一种潜在治疗方式.
研究的目的:
- 使用数值模拟研究骨细胞对全身LMHFV的动态反应机制.
- 分析振动参数 (加速幅度和频率) 对骨细胞机械反应的影响.
- 为了确定最佳的LMHFV参数来增强骨细胞机械微环境.
主要方法:
- 开发了一个包括细胞骨在内的单个骨缺口-骨细胞的有限元素模型.
- 进行了数值模拟,以分析各种LMHFV协议下的动态反应.
- 评估了诸如流体压力和·米塞斯应力等关键机械参数.
主要成果:
- LMHFV诱导了交替的正负液压,并增加了骨细胞上的流体剪切应力,其影响取决于加速幅度.
- 最佳的参数范围 (例如,0.026g-0.038g,30Hz) 产生更高的液体压力大小.
- 细胞骨应力,特别是微管,与振动参数发生非线性变化,特定范围 (0.02g-0.03g,30-45Hz) 增强信号传输.
结论:
- 当LMHFV与适当的参数一起应用时,可以显著改善骨细胞的机械微环境.
- 优化的振动协议可以通过调节机械信号来增强骨细胞的生物活性.
- 这项研究提供了有关骨细胞在振动下机械转导通路的见解,支持潜在的治疗应用.
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