Journal of Acupuncture Research

Korean Acupuncture & Moxibustion Medicine Society (대한침구의학회)
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The Effects of Electroacupuncture on Mechanical Allodynia and Its Involvement with the Sympathetic Nervous System

Tail model의 기계적 이질통에 대한 전침 자극의 효과 및 교감신경계의 관여기전

  • Lee, Hyung-suk (Department of East-West Medicine, Graduate School, Kyung-Hee University) ;
  • Min, Byung-il (Department of East-West Medicine, Graduate School, Kyung-Hee University) ;
  • Hwang, Byung-gil (Department of East-West Medicine, Graduate School, Kyung-Hee University) ;
  • Park, Dong-suk (Department of Acupuncture, College of Oriental Medicine, Kyung-Hee University) ;
  • Lee, Soon-geul (Department of Mechanical Engineering, College of Advanced Technology, Kyung-Hee University)
  • 이형석 (경희대학교 대학원 학과간협동과정 동서의학과) ;
  • 민병일 (경희대학교 대학원 학과간협동과정 동서의학과) ;
  • 황병길 (경희대학교 대학원 학과간협동과정 동서의학과) ;
  • 박동석 (경희대학교 한의과대학 침구과교실) ;
  • 이순걸 (경희대학교 기계산업시스템공학부)
  • Received : 2003.01.07
  • Accepted : 2003.01.18
  • Published : 2003.02.20
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Abstract

Objective : This study was intended to investigate the analgesic effects of electroacupuncture(EA) on mechanical allodynia according to the frequency and intensity of EA. Also to know if mechanical allodynia and the analgesic effects of EA is related to the sympathetci nervous system and/or the purinergic system. Methods : mechanical allodynia-induced rats were produced by resecting S1-S2 nerve. The zusanli(ST36) was used for acupoint and the rats were divided into 4 groups. Each group was given different stimuli[low frequency low intensity-EA(LFLI-EA), low frequency high intensity-EA(LFHI-EA), high frequency low intensity-EA(LFHI-EA), high frequency high intensity-EA(HFHI-EA)]. Futhermore, to make sympathectomy6-OHDA and phentolamine were administered intraperitonially and the concentration of norepinephrine(NE) were measured. As a ATP blocker, suramin was applied for this study. Results : Comparing to control group, each of the 4 groups(LFLI-EA, LFHI-EA, HFLI-EA, HFHI-EA) showed a significant reduction of response frequency of mechanical allodynia. LFHI-EA was more effective than that of LFLI-EA. The LFHI-EA group also had longer lasting effects from the stimulation than the other groups. Sympathectomy didn't show any reduction of response frequency of mechanical allodynia.(Each n=6, n=4). Nor did both sympathectomy and ATP block. The response frequency wasn't reduced by sympathectomy or by sympathectomy and ATP block, but was significantly reduced with LFHI-EA Conclusions : These results suggest that EA has a significant analgesic effect on mechanical allodynia which has no connection with NE and/or ATP.

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