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Effects of Motor Skill Learning on Balance and Coordination in Excitoxicity Induced Cerebellar Injury Model of Rat

  • Journal of the Korean Society of Physical Medicine
  • Abbr : J Korean Soc Phys Med
  • 2010, 5(3), pp.455-465
  • Publisher : The Korean Society of Physical Medicine
  • Research Area : Medicine and Pharmacy > Physical Therapy > Other physical therapy

김기도 1 민경옥 2 김용억 3 Kyung-Yoon Kim 3 Kim Gye Yeop 3 심기철 4 Kim Eun Jung 3 Nam Ki Won 3 심재환 5 정재영 5

1동신대학교 물리치료학과
2용인대학교
3동신대학교
4동신대학교 대학원 물리치료 전공
5서강정보대학

Candidate

ABSTRACT

Purpose:This study is intended to examine the motor skill learning on balance and coordination in the cerebellar injured rats by 3AP. Methods:This study selected 60 Sprague-Dawley rats of 8 weeks. Experiment groups were divided into four groups and assigned 15 rats to each group. Group Ⅰ was a normal control group(induced by saline); Group Ⅱwas a experimental control group(cerebellar injured by 3AP); Group Ⅲ was a group of motor skill learning after cerebellar injured by 3AP; Group Ⅳ was a group of treadmill exercise after cerebellar injured by 3AP. In each group, motor performance test, histologic observations, synaptophysin expression and electron microscopy observation were analyzed. Results:In motor performance test, the outcome of group Ⅱ was significantly lower than the group Ⅲ, Ⅳ(especially group Ⅲ)(p<.001). In histological finding, the experimental groups were destroy of dendrities and nucleus of cerebellar neurons. Group Ⅲ, Ⅳ were decreased in degeneration of cerebellar neurons(especially group Ⅲ). In immunohistochemistric response of synaptophysin in cerebellar cortex, experimental groups were decreased than group Ⅰ. Group Ⅲ's expression of synaptophysin was more increased than group Ⅱ, Ⅳ. In electron microscopy finding, the experimental groups were degenerated of Purkinje cell. Conclusion:These result suggest that improved motor performance by motor skill learning after harmaline induced is associated with dynamically altered expression of synaptophysin in cerebellar cortex and that is related with synaptic plasticity.

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