目的观察越婢汤对阿霉素肾病大鼠肾脏毛细血管通透性的影响,阐明其干预肾病综合征大鼠水肿的作用机制。方法采用尾静脉注射阿霉素建立大鼠肾病综合征模型。大鼠随机分为正常组、模型组及越婢汤低、中、高剂量组(6.6、11.1、22.2 g/kg),...目的观察越婢汤对阿霉素肾病大鼠肾脏毛细血管通透性的影响,阐明其干预肾病综合征大鼠水肿的作用机制。方法采用尾静脉注射阿霉素建立大鼠肾病综合征模型。大鼠随机分为正常组、模型组及越婢汤低、中、高剂量组(6.6、11.1、22.2 g/kg),灌胃给予相应药物14 d。给药结束后,检测肾脏毛细血管通透性、肾脏及皮肤干湿重比例,观察肾脏病理学变化,检测血清Scr、BUN、TC、ALB及尿液24 h UTP水平,ELISA法检测肾组织VEGF水平,免疫组化法检测肾组织VEGF、VEGFA、VEGFR2阳性表达,Western blot法检测肾组织VEGF、VEGFA、VEGFR2、p-ERK1/2、ERK1/2和Rap1蛋白表达。结果与模型组比较,越婢汤高剂量组大鼠肾脏及皮肤干湿重比例升高(P<0.05,P<0.01),VEGF和VEGFA蛋白表达降低(P<0.01);中、高剂量组大鼠肾脏毛细血管通透性,血清Scr、BUN、TC水平,尿液24 h UTP水平,肾组织VEGF水平和VEGFR2蛋白表达降低(P<0.05,P<0.01),ALB水平升高(P<0.01),肾组织病理学改善;越婢汤各剂量组大鼠肾组织p-ERK1/2/ERK1/2蛋白表达比值降低(P<0.01),Rap1蛋白表达升高(P<0.01)。结论越婢汤可以减轻阿霉素肾病大鼠皮肤和肾脏水肿,其作用机制和调控VEGF/ERK信号通路,改善肾脏毛细血管通透性有关。展开更多
VE-cadherin forms VE-cadherin/catenins complex by interacting with catenins,and VE-cadherin/catenins complex is an important component of adherens junctions(AJ). During inflammation ,different kinds of factors can inc...VE-cadherin forms VE-cadherin/catenins complex by interacting with catenins,and VE-cadherin/catenins complex is an important component of adherens junctions(AJ). During inflammation ,different kinds of factors can increase the microvascular permeability eventually by causing the disassembly of VE-cadherin/catenins complex.展开更多
Angiopoietin-1 (Ang-1) is a newly-found endothelium-specific proangiogenic factor and it had been proved essential roles in both vasculogenesis and angiogensis. Among them, its anti-leakage ability may have great pote...Angiopoietin-1 (Ang-1) is a newly-found endothelium-specific proangiogenic factor and it had been proved essential roles in both vasculogenesis and angiogensis. Among them, its anti-leakage ability may have great potential applications in clinical treatment of vascular hyper-permeability in a variety of diseases such as cancer, diabetic retinopathy, rheumatoid arthritis, asthma. In this review, some research progresses focused on this aspect are discussed. [展开更多
文摘目的观察越婢汤对阿霉素肾病大鼠肾脏毛细血管通透性的影响,阐明其干预肾病综合征大鼠水肿的作用机制。方法采用尾静脉注射阿霉素建立大鼠肾病综合征模型。大鼠随机分为正常组、模型组及越婢汤低、中、高剂量组(6.6、11.1、22.2 g/kg),灌胃给予相应药物14 d。给药结束后,检测肾脏毛细血管通透性、肾脏及皮肤干湿重比例,观察肾脏病理学变化,检测血清Scr、BUN、TC、ALB及尿液24 h UTP水平,ELISA法检测肾组织VEGF水平,免疫组化法检测肾组织VEGF、VEGFA、VEGFR2阳性表达,Western blot法检测肾组织VEGF、VEGFA、VEGFR2、p-ERK1/2、ERK1/2和Rap1蛋白表达。结果与模型组比较,越婢汤高剂量组大鼠肾脏及皮肤干湿重比例升高(P<0.05,P<0.01),VEGF和VEGFA蛋白表达降低(P<0.01);中、高剂量组大鼠肾脏毛细血管通透性,血清Scr、BUN、TC水平,尿液24 h UTP水平,肾组织VEGF水平和VEGFR2蛋白表达降低(P<0.05,P<0.01),ALB水平升高(P<0.01),肾组织病理学改善;越婢汤各剂量组大鼠肾组织p-ERK1/2/ERK1/2蛋白表达比值降低(P<0.01),Rap1蛋白表达升高(P<0.01)。结论越婢汤可以减轻阿霉素肾病大鼠皮肤和肾脏水肿,其作用机制和调控VEGF/ERK信号通路,改善肾脏毛细血管通透性有关。
文摘VE-cadherin forms VE-cadherin/catenins complex by interacting with catenins,and VE-cadherin/catenins complex is an important component of adherens junctions(AJ). During inflammation ,different kinds of factors can increase the microvascular permeability eventually by causing the disassembly of VE-cadherin/catenins complex.
文摘Angiopoietin-1 (Ang-1) is a newly-found endothelium-specific proangiogenic factor and it had been proved essential roles in both vasculogenesis and angiogensis. Among them, its anti-leakage ability may have great potential applications in clinical treatment of vascular hyper-permeability in a variety of diseases such as cancer, diabetic retinopathy, rheumatoid arthritis, asthma. In this review, some research progresses focused on this aspect are discussed. [
