[100赫兹振动对尾部悬吊大鼠比目鱼肌超微结构的影响]
[Effects of 100 Hz vibration on ultrastructure of soleus muscle in tail-suspended rats].
作者信息
Yang Wei, Fan Xiao-li, Song Xin-ai
机构信息
Department of Physiology, Medical School of Xi'an Jiaotong University, Xi'an Shannxi, China.
出版信息
Space Med Med Eng (Beijing). 2005 Aug;18(4):259-61.
OBJECTIVE
To study the effects of 100 Hz vibration on ultrastructure of intrafusal and extrafusal fibers in soleus muscle of tail-suspended rats.
METHOD
Weightlessness was simulated by tail suspension of female rats. The ultrastructure of intrafusal and extrafusal fibers of soleus muscle were examined after exposure to 100 Hz vibration.
RESULT
The ultrastructure of intrafusal and extrafusal fibers of soleus muscles showed obvious retrograde changes after 7 d tail suspension, whereas these changes were not obvious after 7 d tail suspension plus 100 Hz vibration.
CONCLUSION
High frequency vibration can counteract the effect of simulated weightlessness on ultrastructure of intrafusal and extrafusal fibers in soleus muscles of rats.
目的
研究100赫兹振动对尾部悬吊大鼠比目鱼肌梭内和梭外肌纤维超微结构的影响。
方法
通过雌性大鼠尾部悬吊模拟失重。在暴露于100赫兹振动后，检查比目鱼肌梭内和梭外肌纤维的超微结构。
结果
尾部悬吊7天后，比目鱼肌梭内和梭外肌纤维的超微结构出现明显的逆行性改变，而在尾部悬吊7天加100赫兹振动后，这些改变不明显。
结论
高频振动可抵消模拟失重对大鼠比目鱼肌梭内和梭外肌纤维超微结构的影响。
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