Comparative Studies of the Electroacupuncture with Different Frequency and Duration Time in the Carrageenan-injected Rats

Carrageenan유발 동통에 대한 전침의 빈도와 시간에 따른 완화 효과

  • Choi Byung Tae (Department of Anatomy, College of Oriental Medicine, Dongeui University) ;
  • Choi Yung Hyun (Department of Biochemistry, College of Oriental Medicine, Dongeui University) ;
  • Lee Yang Tae (Department of Physiology, College of Oriental Medicine, Research Institute of Oriental Medicine, Dongeui University)
  • 최병태 (동의대학교 한의과대학 해부학교실) ;
  • 최영현 (동의대학교 한의과대학 생화학교실) ;
  • 이용태 (동의대학교 한의과대학 생리학교실 및 한의학연구소)
  • Published : 2004.02.01

Abstract

We investigated the comparative effect with different frequency and duration time of electroacupuncture(EA) for suppression of pain. Inflammation was induced by an intraplantar injection of 1 % carrageenan into the right hind paw. Bilateral EA stimulation with 2 Hz, 15 Hz and 120 Hz were delivered at those acupoints corresponding to Zusanli and Sanyinjiao in man via the needles in carrageenan-injected rats. The paw and tail thermal hyperalgesia were measured in 30-minute intervals after carrageenan injection using hot plate and tail flick analgesia meter, respectively. The significant difference was found between the control and any of EA frequencies examined. Especially 2 Hz EA presented more effective inhibitory effects compared with other frequency of EA in tail flick latency. The hyperalgesia induced by carrageenan was strongly inhibited by 2 Hz EA from 5 min post and reached sufficient effects from 20 min post EA treatment. These results suggest that EA treatment might be a useful therapy for mitigation of inflammatory pain.

Keywords

References

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