AIM:To study the relationship between the expression of Fas/FasL protein and apoptosis in rats after renal ischemia/reperfusion.METHODS:Establish the models of renal ischemia/reperfusion injury in rat and SABC immuno...AIM:To study the relationship between the expression of Fas/FasL protein and apoptosis in rats after renal ischemia/reperfusion.METHODS:Establish the models of renal ischemia/reperfusion injury in rat and SABC immunohistochemical methods were used to detect the changes of expression of Fas/FasL protein.Pathomorphological changes in renal ischemia/reparfusion injury were observed.RESULTS:The expression of Fas/FasL proteins was negative in the sham operated group.Fas/FasL proteins were increased in renal in ischemia/reperfusion group,and gradually upregulated with the duration of ischemia or reperfusion and peaked at 72h of reperfusion.The expression of Fas/FasL proteins was stronger in 60min ischemia group than 30min ischemia group and they were mainly expressed in renal tubule.We observed local necrosis and inflammatory cells infiltration around infracted areain ischemia/reperfusion group by HE dyeing methods.And the necrosis area was mainly occurred around proximal convoluted tubule.CONCLUSIONS:These findings suggested that Fas/FasL proteins were over expressed after ischemia/reperfusion injury in rats renal.And Fas/FasL system was involved in the process of renal ischemia/reperfusion injury.展开更多
目的探讨槲皮素对多柔比星致乳大鼠心肌细胞损伤的保护作用及机制。方法原代培养乳大鼠心肌细胞,随机分为正常对照组、多柔比星1.72μmol·L-1损伤组和多柔比星+槲皮素25,50及100μmol·L-1组。槲皮素与心肌细胞培养3h后,加入...目的探讨槲皮素对多柔比星致乳大鼠心肌细胞损伤的保护作用及机制。方法原代培养乳大鼠心肌细胞,随机分为正常对照组、多柔比星1.72μmol·L-1损伤组和多柔比星+槲皮素25,50及100μmol·L-1组。槲皮素与心肌细胞培养3h后,加入多柔比星继续培养24h,正常对照组仅加等量DMEM培养液。倒置显微镜下观察细胞生长状态,比色法检测培养液中谷胱甘肽过氧化物酶(GSH-Px)和超氧化物歧化酶(SOD)的活性,用RT-PCR和Western印迹法检测Fas和FasL的mRNA和蛋白的表达。结果与正常对照组相比,多柔比星损伤组心肌细胞生长状态差,GSH-Px和SOD的活性降低,Fas和FasL的mRNA和蛋白的表达均升高。槲皮素25,50及100μmo·lL-1均可拮抗多柔比星所致的上述变化:GSH-Px分别为(76±3),(73±4),(71±3)vs(69±3)kU·L-1;SOD活性分别为(31±2),(29±2),(29±2)vs(26±2)kU.L-1;Fas mRNA:0.61±0.11,1.04±0.12,1.29±0.11 vs 1.61±0.16;FasL mRNA:0.81±0.07,1.24±0.10,1.57±0.09vs1.79±0.11;Fas蛋白:1.08±0.12,1.54±0.10,1.89±0.11 vs 2.15±0.15;FasL蛋白:1.51±0.08,1.70±0.12,2.20±0.09 vs 2.41±0.26。结论槲皮素可减轻多柔比星致乳大鼠心肌细胞凋亡,Fas和FasL蛋白表达的减少是其可能机制之一。展开更多
文摘AIM:To study the relationship between the expression of Fas/FasL protein and apoptosis in rats after renal ischemia/reperfusion.METHODS:Establish the models of renal ischemia/reperfusion injury in rat and SABC immunohistochemical methods were used to detect the changes of expression of Fas/FasL protein.Pathomorphological changes in renal ischemia/reparfusion injury were observed.RESULTS:The expression of Fas/FasL proteins was negative in the sham operated group.Fas/FasL proteins were increased in renal in ischemia/reperfusion group,and gradually upregulated with the duration of ischemia or reperfusion and peaked at 72h of reperfusion.The expression of Fas/FasL proteins was stronger in 60min ischemia group than 30min ischemia group and they were mainly expressed in renal tubule.We observed local necrosis and inflammatory cells infiltration around infracted areain ischemia/reperfusion group by HE dyeing methods.And the necrosis area was mainly occurred around proximal convoluted tubule.CONCLUSIONS:These findings suggested that Fas/FasL proteins were over expressed after ischemia/reperfusion injury in rats renal.And Fas/FasL system was involved in the process of renal ischemia/reperfusion injury.
文摘目的探讨槲皮素对多柔比星致乳大鼠心肌细胞损伤的保护作用及机制。方法原代培养乳大鼠心肌细胞,随机分为正常对照组、多柔比星1.72μmol·L-1损伤组和多柔比星+槲皮素25,50及100μmol·L-1组。槲皮素与心肌细胞培养3h后,加入多柔比星继续培养24h,正常对照组仅加等量DMEM培养液。倒置显微镜下观察细胞生长状态,比色法检测培养液中谷胱甘肽过氧化物酶(GSH-Px)和超氧化物歧化酶(SOD)的活性,用RT-PCR和Western印迹法检测Fas和FasL的mRNA和蛋白的表达。结果与正常对照组相比,多柔比星损伤组心肌细胞生长状态差,GSH-Px和SOD的活性降低,Fas和FasL的mRNA和蛋白的表达均升高。槲皮素25,50及100μmo·lL-1均可拮抗多柔比星所致的上述变化:GSH-Px分别为(76±3),(73±4),(71±3)vs(69±3)kU·L-1;SOD活性分别为(31±2),(29±2),(29±2)vs(26±2)kU.L-1;Fas mRNA:0.61±0.11,1.04±0.12,1.29±0.11 vs 1.61±0.16;FasL mRNA:0.81±0.07,1.24±0.10,1.57±0.09vs1.79±0.11;Fas蛋白:1.08±0.12,1.54±0.10,1.89±0.11 vs 2.15±0.15;FasL蛋白:1.51±0.08,1.70±0.12,2.20±0.09 vs 2.41±0.26。结论槲皮素可减轻多柔比星致乳大鼠心肌细胞凋亡,Fas和FasL蛋白表达的减少是其可能机制之一。