在模型中,由跳动负荷诱导的骨-骨肌结合处纤维化的发病因子
Haitao Liu1, Xiaotian Liang2, Haiwei Li3
1College of Physical Education, Henan University, Kaifeng, People's Republic of China.
Journal of applied physiology (Bethesda, Md. : 1985)
|January 8, 2025
概括
在子中,过度使用跳跃会导致骨肌交叉点 (PPTJ) 的纤维化,在第6周达到峰值. 这种肌纤维化与转化生长因子β1 (TGF-β1) 和Smad3信号通路有关.
科学领域:
- 生物医学工程 生物医学工程
- 整形外科 整形外科 整形外科
- 运动医学 运动医学
背景情况:
- 重复的跳跃可能会导致骨-骨肌结 (PPTJ) 的过度使用损伤.
- 了解PPTJ中纤维化的时间进展对于开发有效干预措施至关重要.
研究的目的:
- 通过使用子过度使用跳跃模型,研究PPTJ中纤维化发展的时间模式.
- 确定涉及跳跃诱导PPTJ纤维化的主要分子因素.
主要方法:
- 用32只新西兰白建立了一个子过度使用跳跃模型.
- 在2,4,6和8周进行了组织学和免疫组织化学分析 (血素和欧,沙夫兰素O,TGF-β1,Smad3,CTGF,α-SMA,COL-I,COL-III).
- 纤维软骨区域厚度和蛋白质糖面积的定量分析.
主要成果:
- 与对照组相比,在跳的PPTJ中观察到显著的组织学和纤维变化 (P < 0.01).
- 纤维软骨厚度,蛋白糖含量和TGF-β1,Smad3,CTGF,α-SMA,COL-I和COL-III表达的峰值变化发生在第6周 (P <0.05).
- 跳转负载导致PPTJ的形态和纤维变化.
结论:
- 重复跳跃导致PPTJ的形态和纤维变化,在第6周达到峰值变化.
- PPTJ纤维化与TGF-β1和Smad3信号的增加有关,促进细胞外基质合成.
- 研究结果为与跳跃相关的肌损伤的有针对性的早期干预提供了洞察力.
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