关于针刺穴位对交感-肾上腺系统活动的影响问题

国内曾有过一些报道

结果颇不一致.一方面电镜观察及生物测定的结果表明

针刺穴位可促使家兔肾上腺髓质释放儿茶酚胺(CA)增多

麻醉猫及清醒大自鼠血中CA水平升高。另一方面针麻临床研究表明

针刺穴位对交感神经系统具有相对抑制作用。鉴于血中CA水平可以反映机体交感-肾上腺系统的活动状态

我们特建立了下腔静脉内埋藏导管以采集肾上腺静脉血、In this study conscious dogs were used. Under resting condition elec- tro-acupuncture of"Zusanli"point was applied bilateterally for 60 minutes. There was a more significant elevation both in plasma CA and pain reac- tion threshold than in those of the control(p<0.01). When electro-acupunc- ture was applied on tails and the adjucent points of "Zusanli" as control

there was no significant change of plasma CA(p>0.05); but there was a significant elevation of pain threshold (p<0.05); its magnitude was how- ever much less than that of acupuncture of "Zusanli". Under anesthesia

electro-acupuncture of "Zusanli" was applied to the dogs. There was no significant change of plasma CA(p>0.05). When the dogs were resting on the table without acupuncture

there was no significant change both of plasma CA and of pain threshold(p>0.05). Noradrenaline and adrenaline were infused into conscious dogs consect- ively for 60 min. and normal saline as control. In all dogs infused with CA there was significant elevation of pain threshold (p<0.01)

and the elevation was maintained for more than 60 min after infusion. From these observation it is suggested that the acupuncture of "Zu- sanli" may excite "sympatho-adrenal" system and cause the adrenal to re- lease CA

(this effect is of relative characteristc of acupuncture points)

and that the increased circulating CA may facilitate the effect of acupunc- ure analgesia and the regulation by way of some humorol factor.