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蛋白酶体抑制剂MG132对球囊损伤后血管狭窄的影响

Chinese Journal of Arteriosclerosis(2009)

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Abstract
目的观察蛋白酶体抑制剂MG132对球囊损伤后血管狭窄的影响。方法将新西兰白兔40只随机分成正常对照组、高脂组、球囊损伤组和MG132组。球囊损伤组和MG132组兔采用球囊拉伤颈总动脉复制血管损伤后狭窄模型;MG132组在损伤血管局部应用蛋白酶体抑制剂MG132。喂养2周、4周和8周后取颈总动脉损伤段血管制成病理切片行HE染色,测定内膜厚度、中膜厚度和管腔面积,评价颈总动脉血管狭窄。结果球囊损伤组颈总动脉发生明显狭窄、管腔减小、内膜增厚,有泡沫细胞和大量血管平滑肌细胞增殖,而MG132组的病变明显减轻。结论用球囊拉伤新西兰白兔颈总动脉复制的血管狭窄模型,颈总动脉发生明显狭窄,局部应用蛋白酶体抑制剂MG132能够抑制血管内膜增生,抑制损伤后血管狭窄。
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Key words
Atherosclerosis,Apoptosis,Vascular Restenosis,Proteasome Inhibitor,Ubiquitin-Proteasome Pathway
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