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外源性乙酰胆碱和一氧化氮对大鼠胃电节律作用的实验研究

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Author:: No author available

Journal Title:: WORLD CHINESE JOURNAL OF DIGESTOLOGY

Issue:: 7

DOI:: 10.3969/j.issn.1009-3079.2002.07.025

Key Word:: No keyword available

Abstract：目的:观察应用不同的胆碱能神经和氮能神经激动剂或抑制剂后胃电节律的变化,探讨外源性乙酰胆碱和一氧化氮对大鼠胃电节律的影响.方法:20只大鼠随机分为2组:正常对照组(12只)和药物作用组(8只),记录硝普钠、阿托品、氯化氨甲酰胆碱(CCH)、左型精氨酸甲酯(L-NAME)以及新斯的明等药物对胃电节律影响.结果:硝普钠和大剂量阿托品、CCH、L-NAME均可引起明显的胃电节律失常,异常节律指数(ARI)和慢波频率变异系数(CV)明显升高;CCH和硝普钠合用时胃电节律失常较单用硝普钠或新斯的明时好转.结论:一氧化氮和乙酰胆碱之间在调节胃电节律时存在着精细的平衡,当失去平衡尤其是一氧化氮增加而乙酰胆碱减少时,则胃电节律失常明显增加.

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