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Funct Neurol. 1988 Jul-Sep; 3(3): 263-73.

Changes of reactions of neurones in dorsal raphe nucleus and locus coeruleus to electroacupuncture by hypothalamic arcuate nucleus stimulation.

Yin QH, Mao JR, Guo SY.

Laboratory of Neurobiology, Suzhou Medical College, China.

In this experiment the role of the hypothalamic arcuate nucleus (ARC) in acupuncture analgesia and its mechanisms were studied with behavioural and electrophysiological methods. After ARC stimulation the analgesic effect of acupuncture was enhanced significantly and the responses of neurones to electroacupuncture were increased in the dorsal raphe nucleus (DR) and reduced in the locus coeruleus (LC), which could be reversed by intraperitoneal injection of naloxone. The results indicate that ARC might participate in acupuncture analgesia via changing the responses of DR and LC neurones to electroacupuncture, a process in which opiate-like substances (probably beta-endorphin) are involved.

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