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大鼠实验性肝硬化门脉高压形成中肝脏内皮素A、B型受体的动态变化

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摘要 目的观察大鼠实验性肝硬化门脉高压形成过程中外周血中ET-1含量和肝脏中内皮素A和B受体(endothelin receptors,ETR)mRNA表达的动态变化,以期对其在门脉高压中动态变化的特点有进一步的了解。方法通过四氯化碳(CCl4)介导大鼠实验性肝硬化门脉高压模型,放免法检测ET-1;半定量RT-PCR法观察不同时期肝组织中ETRA和ETRB mRNA的表达差异。结果与对照组相比,模型组中外周血ET—1含量在wk8升高了59%(P<0.05),wk10升高的更加明显,且ET-1的升高与门脉高压的形成显著相关(r=0.79,P<0.01);在门脉高压形成过程中,肝脏中ETRA在后期的表达下降了39%(P<0.05),ETRB的表达从wk2开始就有47%的增加(P<0.05),其后一直维持着高水平的表达,且ETRB的表达增高与门脉高压的形成显著相关(r=0.83,P<0.01)。结论外周血中ET—1含量的增高和肝脏中ETRB表达的增加可能是形成肝硬化门脉高压的重要原因之一。
出处 《世界感染杂志》 2005年第1期25-28,共4页 World Journal of Infection
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