Effects of Hindlimb-unloading on Diameter of Intrafusal Fibers and Capsule at Equatorial Region of Rat Soleus Muscle Spindle.
- VernacularTitle:后肢去负荷对大鼠比目鱼肌肌梭梭内肌纤维与赤道部梭囊直径的影响
- Author:
Yongjin ZHU
;
Sudi WU
;
Xiaoli FAN
;
Xinai SONG
;
Linping XU
- Publication Type:Journal Article
- Keywords:
hindlimbunloading;
nuclear-bag fibres;
nuclear-chain fibres;
capsule;
soleus muscle
- From:Space Medicine & Medical Engineering
2006;0(04):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To observe the changes of diameter of intrafusal fibers and capsule at equatorial region of rat soleus muscle spindle caused by hindlimb-unloading.Method Tail-suspended female rats were used as the model of hindlimb-unloading,all rats were randomly divided into 4 groups according to body weight.The four groups were exposed to tail-suspension for: 7 d,14 d,28 d and 0 d,respectively.The diameter of intrafusal fibers and capsule of single muscle spindle was measured and analyzed.Result The diameter of intrafual fibers,including nuclear-bag fibers and nuclear-chain fibers, were reduced slightly in both 7 d group and 28 d group and obviously reduced in 14 d group.The capsule diameter at equatorial region was obviously reduced in 7 d group.Conclusion Hindlimb-unloading can obviously reduce the diameters of intrafusal fibers and capsule at equatorial region of rat soleus muscle spindle.
