富血小板血浆对血管内皮细胞增殖及血管形成的影响

目的:探讨富血小板血浆(platelet-rich plasma,PRP)对人脐静脉血管内皮细胞(human umbilicalvein vessel endothelial cells,HUVECs)增殖及体外形成血管的影响.方法:体外培养HUVECs 细胞系,二次离心法制备自体富血小板血浆,将细胞分为实验组与对照组,实验组以含5%、10%、20%自体富血小板血浆的条件培养液干预,对照组不进行干预.采用四甲基偶氮唑蓝(XTT)法测定HUVECs 的增殖情况,流式细胞仪检测细胞周期,体外成管实验检测细胞形成血管的能力.结果:富血小板血浆实验组较对照组细胞形态饱满、密度增大;XTT 比色法显示各浓度实验组细胞增殖与对照组比较明显增高(P ＜ 0.01);流式细胞仪检测实验组S 期细胞明显增多(P ＜ 0.01);体外成管实验显示实验组细胞能形成完整的管状结构,小管面积明显大于对照组(P ＜ 0.01),对照组小管形成结构不完整、面积小于实验组(P ＜ 0.05).结论:PRP 能在体外明显促进HUVECs 的增殖及形成毛细血管腔,在组织再生或修复过程中可能发挥促新生血管形成的作用.

Effects of platelet-rich plasma on the proliferation and vasoformation of human umbilical vascular endothelial cells in vitro

Objective To investigate the effects of platelet-rich plasma (PRP) on the proliferative and capillary canaliculization of human umbilical vascular endothelial cells in vitro. Methods PRP was prepared by twice centrifugal method, and HUVECs (CEV-304) were cultured in vitro and then randomly divided into experimental group and control group. Special culturing media including 5%, 10%, and 20% PRP were added into the HUVECs separately in the experimental group and none in the control group. The proliferation of...