中文摘要：

目的本研究以载脂蛋白E基因敲除(apolipoprotein-E knockout,apoE-/-)小鼠为研究对象,给予低剂量的小鼠巨细胞病毒(murine cytomegalovirus,MCMV),以期了解在模拟人体内潜伏感染状态下病毒对动脉粥样硬化形态学方面的影响,以及凝集素样氧化型低密度脂蛋白受体-1(lectin-like ox-LDL receptor-1,LOX-1)基因的表达变化,以探讨MCMV在动脉粥样硬化形成及发展过程中所起的作用。方法采用随机数字表法将32只高脂饮食apoE-/-小鼠随机分为2组,其中1组经腹腔感染MCMV,分别在感染后14周、18周和24周截取主动脉;另1组不感染MCMV。通过HE染色观察2组动物主动脉粥样硬化病变的面积、数目、分级和内膜/中膜比值,实时定量PCR(real-time PCR)检测动脉壁和唾液腺中的MCMV含量以及LOX-1基因表达量的变化。结果研究显示在慢性潜伏感染阶段,MCMV感染明显加重apoE-/-小鼠动脉粥样硬化病变面积;但随感染时间的延长,该作用逐步减弱。小鼠动脉壁中没有MCMV mRNA的表达。血浆MCMV抗体含量、唾液腺MCMV DNA含...

英文摘要：

Objective Atherosclerosis plays an important role in the brain stroke.Cytomegalovirus(CMV) infection has been associated with atherosclerotic process.The goal of this study was to investigate whether murine cytomegalovirus(MCMV) infection is able to exacerbate the atherosclerotic process in atherosclerosis-susceptible mice.Methods The apolipoprotein E knockout(apoE-/-) mice kept on high fat feed were given low dosage of MCMV to mimic the latent stage of CMV infection in human.At 14.18 and 24 weeks post infe...