흰쥐의 내측 전정신경핵 흥분성에 대한 전침자극의 효과 (Effects of Electroacupuncture on the excitability in Medial Vestibular Nuclei of Rats)

서지정보

· 발행기관 : 경락경혈학회
· 수록지 정보 : Korean Journal of Acupuncture / 26권 / 3호 / 27 ~ 42페이지
· 저자명 : 김재효, 이성호, 손인철, 김민선, 김영선

초록

Objectives : The vestibular system detects head movement and serve to regulate and maintain the equilibrium and orientation of the body. It is known that the vestibular imbalance leads to vestibular symptoms such as nausea, vomiting, vertigo and postural disturbance. The objectives of the present study were to examine a modification of the dynamic activities of medial vestibular nucleus (MVN) neurons following electroacupuncture (EA) of GB43 (Hyepgye).
Methods : In Sprague-Dawley rats weighing 250~300g, dynamic responses induced by sinusoidal whole body rotation about vertical axis at 0.2 ㎐ were observed in MVN of rats during EA of GB43 (Hyepgye) with 0.2 ms, 40 Hz and 600±200 ㎂. Also, expression of cFos protein was observed 2 hours after EA for 30 mins.
Results : In dynamic response of vestibular neuron, the excitatory or inhibitory responses of gain were predominant in the ipsilateral MVN neurons during EA but not predominant in the contralateral MVN. Most neurons showing decreased gain were classified to inhibitory responses of spontaneous firing discharge during EA and ones showing increased gain were classified to excitatory response of spontaneous firing discharge during EA. Also, EA of the left GB43 (Hyepgye) for 30 mins produced the expression of cFos protein in MVN, inferior olive (IO) and solitary tract nuclei (SOL). Spatial expressions of cFos protein were predominant in the contralateral MVN, ipsilateral IO and bilateral SOL.
Conclusion : These results suggest that the excitability of MVN neurons was influenced by EA of GB43 (Hyepgye) and EA may be related to the convergence on MVN.

영어초록

Objectives : The vestibular system detects head movement and serve to regulate and maintain the equilibrium and orientation of the body. It is known that the vestibular imbalance leads to vestibular symptoms such as nausea, vomiting, vertigo and postural disturbance. The objectives of the present study were to examine a modification of the dynamic activities of medial vestibular nucleus (MVN) neurons following electroacupuncture (EA) of GB43 (Hyepgye).
Methods : In Sprague-Dawley rats weighing 250~300g, dynamic responses induced by sinusoidal whole body rotation about vertical axis at 0.2 ㎐ were observed in MVN of rats during EA of GB43 (Hyepgye) with 0.2 ms, 40 Hz and 600±200 ㎂. Also, expression of cFos protein was observed 2 hours after EA for 30 mins.
Results : In dynamic response of vestibular neuron, the excitatory or inhibitory responses of gain were predominant in the ipsilateral MVN neurons during EA but not predominant in the contralateral MVN. Most neurons showing decreased gain were classified to inhibitory responses of spontaneous firing discharge during EA and ones showing increased gain were classified to excitatory response of spontaneous firing discharge during EA. Also, EA of the left GB43 (Hyepgye) for 30 mins produced the expression of cFos protein in MVN, inferior olive (IO) and solitary tract nuclei (SOL). Spatial expressions of cFos protein were predominant in the contralateral MVN, ipsilateral IO and bilateral SOL.
Conclusion : These results suggest that the excitability of MVN neurons was influenced by EA of GB43 (Hyepgye) and EA may be related to the convergence on MVN.

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