TINGGONG(SI-19), A NOVEL ACUPOINT FOR 2HZ ELECTROACUPUNCTURE-INDUCED DEPRESSOR RESPONSE

In urethane-anesthetized, tubocurarine-immobilized and artificially ve ntilated rats, the specific electroacupuncture (EA, 2 Hz, 3 V) being d elivered to bilateral ''Tinggong (SI 19)-Quchi (L1 11)'' induced a dep ressor response, while 10 Hz-EA, and 2 Hz-EA to either non-acupoints, ''Hegu (LI 4)-Quchi'' or ''Taichong (Liv 3) -Quchi'' did not. Pretreat ment of either phentolamine, Propranolol or methyl atropine (i.v.) cou ld markedly reduce the depressor response, indicating that the sympath etic vasoconstrictor nerve, the cardia sympathetic nerve and cardiac v agal nerve all are involved in the hypotensive response.