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慢性肾衰大鼠血管中VEGFa及内皮祖细胞标志物表达变化 被引量:1

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摘要 目的研究大鼠5/6肾切除后引起慢性肾衰,进而诱发的大鼠胸主动脉血管内皮损伤随病程的进展,观察血管内皮细胞生长因子a(VEGFa)及内皮祖细胞标志物在血管组织中的表达变化。方法行5/6肾切除术制作大鼠血管活性损伤模型,自动生化测定仪测定血肌酐(Scr)、尿素氮(BUN)水平,体外灌流法测定胸主动脉舒张活性,real ti me PCR法测定mRNA的表达。结果大鼠血肌酐和尿素氮水平随病程进展显著升高,慢性肾衰形成;6周时乙酰胆碱刺激引起的血管舒张活性显著下降,提示血管内皮损伤,10周和14周时损伤进一步加重;血管中CD34,CD133,VEGFR2,VEGFa表达下调。结论 5/6肾切除可引起大鼠慢性肾衰,诱发大鼠胸主动脉血管内皮损伤;血管内皮生长因子表达下调,内皮祖细胞减少可能是血管随病程持续损伤的机制之一。
出处 《海峡药学》 2011年第8期45-47,共3页 Strait Pharmaceutical Journal
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