[Effects of high frequency vibration on expression of myosin heavy chain (MHC) in intrafusal and extrafusal fibers in soleus muscles of tail-suspended rats].
作者信息
Yang Wei, Fan Xiao-li, Wu Su-di, Song Xin-ai
机构信息
Department of Physiology, Xi'an Jiaotong University, Shanxi Xi'an, China.
出版信息
Space Med Med Eng (Beijing). 2004 Jun;17(3):166-70.
OBJECTIVE
To study the effects of high frequency vibration on expression of myosin heavy chain (MHC) in intrafusal and extrafusal fibers in soleus muscles of tail-suspended rats.
METHOD
Weightlessness was simulated by tail suspension of female rats. Using immunohistochemistry technique, changes of expression of MHC in intrafusal and extrafusal fibers of soleus muscles were detected.
RESULT
Expression of fast MHC in intrafusal and extrafusal fibers of soleus muscles increased during 7 d of simulated weightlessness, whereas during 7 d of tail suspension plus high frequency vibration, these changes were not detected.
CONCLUSION
High frequency vibration can counteract the changes in expression of MHC in intrafusal and extrafusal fibers of rats soleus under muscles of rats in simulated weightlessness situation.
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