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大鼠胃电节律失常模型中NO/cGMP信号转导系统的作用
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- Author:
- No author available
- Journal Title:
- WORLD CHINESE JOURNAL OF DIGESTOLOGY
- Issue:
- 8
- DOI:
- 10.3969/j.issn.1009-3079.2001.08.034
- Key Word:
- 一氧化氮;环鸟苷酸;胃/病理生理学;电生理学;大鼠,Wistar;疾病模型,动物
Abstract： 目的研究NO/cGMP信号转导系统在致大鼠胃电节律失常中的作用.方法建立大鼠胃电节律失常模型,计算机采集并分析正常和模型组大鼠胃电信号;肌间神经丛铺片,还原型尼克酰胺腺嘌呤二核苷酸脱氢酶(NADPH-d)组化法显示正常及模型组肌间神经丛氮能神经,并经图象分析定量;放免法测定正常及模型组胃平滑肌组织cGMP含量结果模型组肌间神经丛氮能神经分布面密度(15.0±4.5)%,cGMP含量(17.6±4.6)pmol.L-1.g-1及胃慢波异常节律指数(ARI,20.2%±8.7%)、频率变异系数(CV,34.7%±6.3%)均明显高于正常组,分别为(9.1±2.5)%,(11.8±2.1)pmol.L-1.g-1,(5.1±1.8)%,(21.0±4.2)%,P＜0.01,且模型组氮能神经面密度与该组ARI和CV呈显著正相关,相关系数r分别为0.73和0.69,P＜0.05,模型组cGMP含量与该组ARI和CV亦呈显著正相关,相关系数r分别为0.78和0.79,P＜0.01.结论模型组大鼠胃电节律失常与NO,cGMP升高有关,NO通过NO/cGMP信号转导系统调控胃电节律.
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