以胃电为指标探讨经络学说中经穴与脏腑的关系

A Study of the Relation between the Acupoints and the Internal Organs Using Gastric Electrical Activity as Indicator

本工作观察电针狗“足三里”穴对胃电活动的影响,并以“合阳”穴为对照,观察这种影响的相对特异性。方法实验在六条埋有电极的清醒狗身上进行。动物性别不拘,体重在7.6～11.5公斤之间。在无菌条件下,将双极白金丝电极埋藏在幽门窦前壁离幽门约2～3厘米的肌层中。白金丝直径为0.5毫米,两极的间距为2毫米。导线出腹腔后由皮下经项背引出。手术后两周待动物恢复健康后开始实验。

Experiments were performed in 6 conscious dogs,each of which had a pair of bipolarplatinum electrodes implanted in the gastricantrum.The gastric electrical activities weredisplayed on a polygraph(time constant:0.3sec).As a background,pentagastrin(0.5-1μg/kg/h)was infused during the whole experi-mental period.A few min after the beginningof pentagastrin infusion,the rate of the basicelectrical rhythm(BER)was markedly increa-sed,and the rate and amplitude of the actionpotential also increased.An hour later,the dogwas given an electric acupuncture on“Zusanli”of the stomach channel or“Heyang”of theurinary bladder channel.when bilateral“Zusan-li”were stimulated,the rate of BER wasdecreaesd immediately(P<0.05).At the endof 25 min of stimulation,the inhibitory effectwas even more significant(P<0.01).After theceasation of the stimulation,the rate of BERincreased gradually and no statistical differencewas found between the rate of BER before thestimulation and that an hour after the ceasationof the sttion.While bilateral“Heyang”were stimulated under tne same conditions,theinhibition was less pronounced.Although therate of BER showed a tendency to diminish,there was no significant statistical difference.Neither electric acupuncture of“Zusanli”norof“Heyang”had effect on gastric actionpotential.These results indicate that“Zusanli”exertssome relatively more specific influences ondog's antral muscle which shows hyperactivitythan“Heyang”.Therefore,the theory of channelsand collaterals is worth further investigating.