Biull Eksp Biol Med. 1979 Nov; 88(11): 556-9.

[Acupuncture analgesia in rats and its changes under the effect of morphine and naloxone]

Vasil've IuN, Ignamov KuD , Kachan AT, Bogdanov NN.

It was established in chronic experiments on rats that electric acupuncture of the acupuncture point noticeably decreases pain reaction to electric stimulation of the tail. Morphine given in a subanalgetic dose (5 mg/kg) potentiated acupuncture analgesia, while 5 mg/kg of naloxone completely abolished it. Potential mechanisms of analgesia realization during electric acupuncture are discussed.