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백서(白鼠)에서 족삼리(足三里) 침 자극이 니코틴 반복처치로 유도된 행동적 민감화 및 뇌(腦)의 측핵에서 c-Fos 발현에 미치는 영향
채윤병 ( Y. B. Chae ),심인섭 ( I. S. Shim ),권영규 ( Y. K. Kwon ),양재하 ( C. H. Yang ),김미려 ( M. R. Kim ),김광중 ( K. J. Kim ),함대현 ( D. H. Hahm ),황은주 ( E. J. Hwang ),이혜정 ( H. J. Lee ) 대한경락경혈학회 2001 Korean Journal of Acupuncture Vol.18 No.2
We have previously demonstrated that repeated injections of nicotine produced an increase in locomotor activity, dopamine (DA) release and c-Fos expression in the nucleus accumbens, one of the major projection areas of the central DA system. Acupuncture as a therapeutic intervention is widely used for the treatment of many functional disorders such as substance abuse and mental dysfunction. In order to investigate whether acupuncture has an influence on nicotine-induced reinforcing and behavioral effects, we examined the effect of acupuncture on nicotine-induced behavioral locomotor activity and c-Fos expression as an important marker of the postsynaptic neuronal activity in the nucleus accumbens utilizing the immunocytochemical detection of the Fos protein. The male Sprague-Dawly rats were given repeated daily nicotine injections (0.4 mg/kg s.c., twice daily for 7 days) followed by one challenging injection on the 4th day after the last daily injection. Systemic challenge with nicotine produced a much larger increase in locomotor activity and accumbal Fos-like immunoreactivity(FLI) in nicotine-pretreated rats. During withdrawal period(from 8th day to 11th day) acupuncture at zusanli(ST36), but not at control points(HT7, L3) significantly attenuated expected increase in nicotine-induced locomtor activity and accumbal FLI to subsequent nicotine challenge. These results demonstrated that reduction in locomotor activity by acupuncture may be mediated by reduction of postsynaptic neuronal activity in the nucleus accumbens. Our results suggest that acupuncture may have therapeutic effect on nicotine addiction.