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류승준,강형원,류영수,Lyu, Seung-jun,Kang, Hyung-won,Lyu, Yeoung-su 대한침구의학회 2003 대한침구의학회지 Vol.20 No.4
Objective: Dopamine activity in thenucleus accumbens is an important neuropharmacological component of morphine reinforcement. In this nucleus a shell and core have been distinguished on the basis of anatomical and neurochemical criteria. Although acupuncture has been standard intervention in many detoxication programs worldwide, the central mechanism by which morphine acts to reinforce behavior remain elusive. The present in vivo microdialysis study was conducted, in freely moving rats, to detect the effects of acupuncture on extracellular dopamine release in the nucleus accumbens. Methods: Male Sprague-Dawley rats received acupuncture for 1 min after injection of morphine hydrochloride (5mg/kg, s.c.). The employed acupuncture needle points corresponded to bilateral Neiguan(PC6) on the pericardium channel, which has been used to treat mental and psychosomatic disorders. Extracellular dopamine and its metabolites were measured every 20 mins for 3 hrs following the subcutaneous morphine injection. Results: Results showed that acupuncture at PC6 significantly attenuated increases in dopamine levels induced by a single acute morphine injection in the nucleus accumbens shell and core, respectively. Conclusions: These results provided strong evidence for acupuncture-mediated reduction in morphine-induced dopamine release in the rat nucleus accumbens.
류승준 ( Seung Jun Ryu ),이충식 ( Chung Sik Lee ),박보라 ( Bo Ra Park ),서종훈 ( Jong Hoon Seo ),강형원 ( Hyung Won Kang ),류영수 ( Yeong Su Lyu ),김태헌 ( Tae Heon Kim ) 대한한방신경정신과학회 2007 동의신경정신과학회지 Vol.18 No.1
Objective : The aim of this study was to investigate effects of Gagambosim-Tang(GBT) of focal brain ischemic injury induced by intraluminal filament insertion in the rats.Method : The ischemia was induced by intraluminal filament insertion into middle cerebral artery. Eight-arm radial maze was designed for the behavioral task. Gagambosim-Tang was orally administrated in SD rats for 21 days. The task was started on the 4th week after focal brain injury, and performed two trials per day for 6days. The effects of Gagambosim-Tang on neuroprotective agents in cresyl violet, choline acetyltranferase(ChAT), nerve growth factor (NGF)-stain and c-Fos with ischemic injury were investigated.Results : The errors in the eight-arm radial maze task were significantly decreased in normal group compared with control group on 2-6days, GBT 1X(42.2 mg/ml)orally administrated group on 1days, GBT 6X(253.2 mg/ml) on 3, 5, 6days. The rate of correct choice was increased in normal and GBT 6X groups. The neuroprotective effect in the hippocampal CA1 was increased in normal and GBT 1X, GBT 6X groups compared with control group. The density of ChAT in the hippocampal CA1 was increased in normal and GBT6X groups compared with control group. The density of NGF in the hippocampal CA1 was increased normal and GBT6X groups compared with control group. The number of c-Fos-positive neurons in the hippocampal CA1 was increased in normal and GBT 6X groups compared with control group.Conclusion : These results suggest that Gagambosim-Tang may have protective effect on dementia.
몰핀에 민감화된 흰쥐의 내관부위 자침이 행동과 측핵의 도파민 유리에 미치는 효과
김상호,류승준,김태헌,강형원,류영수,Kim, Sang-Ho,Lyu, Seung-Jun,Kim, Tae-Heon,Kang, Hyung-Won,Lyu, Yeoung-Su 대한동의생리학회 2005 동의생리병리학회지 Vol.19 No.3
Acupuncture as a therapeutic intervention is widely used for the treatment of many functional disorders such as substance abuse and mental dysfunction. Clinical trials are currently underway to determine the effectiveness of acupuncture in the treatment of drug addiction. Yet, there are still many unanswered questions about the basic mechanism of acupuncture. Studies have shown that both the psychomotor stimulant effects and rewarding properties of addictive drugs, including morphine, are sensitized by repeated drug administration and raised the possibility that both of these effects may De linked to the same or closely overlapping the mesolimbic dopamine systems. Neiguan (PC6) point on the pericardium channel which is associated with the brain and its mental function, has been used to treat mental, psychosomatic disorders and gastroenterological disorders. The present study was designed to investigate the effect of acupuncture on repeated morphine-induced changes in extracellular dopamine levels using in vivo microdialysis and to measure the effect of acupuncture on repeated morphine-induced behavioral changes. Male Sprague-Dawley rats were treated twice a day for three days with increasing doses of morphine (10, 20 and 40 mg/kg, s.c.) or with saline. After 15 days of withdrawal, rats were challenged with morphine hydrochloride (5 mg/kg, s.c.). Acupuncture was applied at bilateral Neiguan (PC6) points for 1min after the morphine challenge. Results showed that acupuncture at the specific acupoint PC6, but not at control points (tail and HE8) significantly decreased both dopamine release, behavior induced by a systemic morphine challenge or a single s.c. morphine injection in the morphine-repeated animals. These results suggest that reduction in sensitization may be one mechanism whereby acupuncture alleviates morphine craving in addicts. Moreover, in a more general sense these results suggest that acupuncture can be used as a therapeutic intervention for correcting reversible malfunction of the body by direction of brain pathway and thus acupuncture can contribute to the biochemical balance in the central nervous system by regulating neurotransmitters.