摘要
In urethane-anesthetized,curare-immobilized,and artificially ventilatedrats,bilateral cervical vagotomy or atropine(i.v.)attenuated the pressor and tachycardiaresponses to electroacupuncture(EA),but markedly reduced the EA-tachycardia effect.Onthe contrary,the EA-pressor effect was remarkably decreased by phentolamine(i,v.).whilethe tacbycardia effect of EA was not.Similar results were obtained under chloral hydrate(instead of urethane)anesthesia.It is suggested that besides the excitation of the sympa-thetic vasoconstrictor nerve the inhibition of the cardiac vagus nerve also contributes to theEA-pressor effect,and both the cardiac vagus and cardiac sympathetic nerves are responsiblefor the tachycardia response to EA.
In urethane-anesthetized,curare-immobilized,and artificially ventilated rats,bilateral cervical vagotomy or atropine(i.v.)attenuated the pressor and tachycardia responses to electroacupuncture(EA),but markedly reduced the EA-tachycardia effect.On the contrary,the EA-pressor effect was remarkably decreased by phentolamine(i,v.).while the tacbycardia effect of EA was not.Similar results were obtained under chloral hydrate (instead of urethane)anesthesia.It is suggested that besides the excitation of the sympa- thetic vasoconstrictor nerve the inhibition of the cardiac vagus nerve also contributes to the EA-pressor effect,and both the cardiac vagus and cardiac sympathetic nerves are responsible for the tachycardia response to EA.
基金
①This work was supported by a grant from the National Natural Science Foundation of China.
