来源于肝纤维化环境内皮祖细胞移植治疗肝纤维化模型大鼠的逆转作用
发布时间:2019-05-08 04:05
【摘要】:背景:理论上,从肝纤维化大鼠骨髓中提取经过体内病理环境"筛选"作用后的内皮祖细胞,应更能适应肝纤维化微环境,移植入纤维化肝脏后应更倾向于分化为成熟内皮细胞,参与肝内血管重建。目的:探讨来源于大鼠肝纤维化体内环境的骨髓源性内皮祖细胞移植对大鼠肝纤维化的治疗作用。方法:将28只Wistar大鼠随机分为3组:正常组(n=8)皮下注射橄榄油,2次/周;模型组(n=10)皮下注射四氯化碳3 m L/kg,2次/周,首剂加倍,分别于第2,3,5周末尾静脉输注生理盐水;实验组(n=10)皮下注射四氯化碳3 m L/kg,2次/周,首剂加倍,分别于第2,3,5周末尾静脉输注肝纤维化大鼠骨髓源性内皮祖细胞悬液。注射6周末,进行肝功能、凝血功能、肝组织相关蛋白及肝组织病理检查。结果与结论:(1)肝组织病理:模型组肝组织呈广泛而严重的肝细胞脂肪变性和坏死,门静脉和中央静脉周围炎症细胞浸润,汇管区扩大及大量纤维组织增生;与模型组相比,实验组肝细胞变性坏死、炎症细胞浸润及纤维组织增生等均有所减轻;(2)肝组织相关蛋白:与正常组相比,模型组透明质酸、层粘连蛋白和Ⅲ型前胶原、血管内皮生长因子、表皮生长因子水平升高(P0.05);与模型组相比,实验组透明质酸、层粘连蛋白和Ⅲ型前胶原水平明显下降(P0.05),血管内皮生长因子、表皮生长因子水平升高(P0.05);(3)肝功能、凝血功能:与正常组相比,模型组肝功能、凝血功能严重受损(P0.05);与模型组相比,实验组肝功能明显改善(P0.05);(4)结果表明:来源于肝纤维化体内环境的骨髓源性内皮祖细胞移植能有效治疗大鼠肝纤维化,其作用机制可能是通过促进肝脏血管新生来实现的。
[Abstract]:Background: theoretically, endothelial progenitor cells (EPCs) extracted from bone marrow of rats with hepatic fibrosis should be more adaptable to the microenvironment of hepatic fibrosis after being "screened" by pathological environment in vivo. After transplantation into fibrotic liver, it is more likely to differentiate into mature endothelial cells and participate in intrahepatic vascular remodeling. Aim: to investigate the therapeutic effect of bone marrow derived endothelial progenitor cell transplantation from rat liver fibrosis environment on rat liver fibrosis. Methods: 28 Wistar rats were randomly divided into 3 groups: normal group (n = 8) was subcutaneously injected with olive oil twice a week; In the model group (n 鈮,
本文编号:2471603
[Abstract]:Background: theoretically, endothelial progenitor cells (EPCs) extracted from bone marrow of rats with hepatic fibrosis should be more adaptable to the microenvironment of hepatic fibrosis after being "screened" by pathological environment in vivo. After transplantation into fibrotic liver, it is more likely to differentiate into mature endothelial cells and participate in intrahepatic vascular remodeling. Aim: to investigate the therapeutic effect of bone marrow derived endothelial progenitor cell transplantation from rat liver fibrosis environment on rat liver fibrosis. Methods: 28 Wistar rats were randomly divided into 3 groups: normal group (n = 8) was subcutaneously injected with olive oil twice a week; In the model group (n 鈮,
本文编号:2471603
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