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兔动脉粥样硬化后血管平滑肌层肉碱棕榈酰基转移酶-1的表达变化

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摘要 目的:观察兔动脉粥样硬化(atherosclerosis,AS)后血管平滑肌层肉碱棕榈酰基转移酶-1(carnitine patmitoyl transferase,CPT-1)mRNA表达变化,从能量代谢的角度去探讨AS形成的机制。方法:通过高胆固醇喂养建立兔AS模型,设对照组(普通饲料,n=8)、高脂组(高胆固醇饲料,n=9),第9周和第20周检测血清血脂水平包括总胆固醇(TC)、甘油三酯(TG)、低密度脂蛋白(LDL);第25周留取兔升主动脉、胸主动脉标本,病理形态学观察升主动脉组织学变化并进行病理形态学定量分析;逆转录多聚酶链式反应(RT-PCR)测定胸主动脉血管平滑肌层CPT-1mRNA的表达。结果:高脂饮食诱导兔高胆固醇血症和AS模型,外周血TC、TG、LDL升高,病理组织学显示内膜(I)/中层(M)厚度比值(I/M)、I+M、内膜/中层面积比值(SI/SM)增大,AS血管平滑肌层CPT-1表达下调,与对照组比较差异有统计学意义(P<0.05)。结论:高胆固醇喂养明显升高兔血脂水平,AS血管平滑肌层CPT-1表达显著下调。
出处 《实用医学杂志》 CAS 2007年第16期2478-2480,共3页 The Journal of Practical Medicine
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