As a kind of cytoskeleton protein,vimentin is a major member of intermediate filament family.Vimentin is found mainly in mesenchymal cells,and its expression and phosphorylation are regulated by many factors.In the pa...As a kind of cytoskeleton protein,vimentin is a major member of intermediate filament family.Vimentin is found mainly in mesenchymal cells,and its expression and phosphorylation are regulated by many factors.In the past,vimentin was revealed as a scaffold maintaining cellular integrity,and recent studies shed lights on the evidence that vimentin played many important roles in cellular adhension,growth,apoptosis,cell signaling as well as inflammatory response.This article summarizes the recent progress of vimentin about its expression and function.Abstract:SUMM ARY As a kind of cytoskeleton protein,vimentin is a majormember of intermed iate filament fam i-ly.V imentin is found mainly in mesenchymal cells,and its expression and phosphorylation are regulated by many factors.In the past,vimentin was revealed as a scaffold maintaining cellular integrity,and re-cent stud ies shed lights on the evidence that vimentin played many important roles in cellular adhension,growth,apoptosis,cell signaling as well as inflammatory response.This article summarizes the recent progress of vimentin about its expression and function.展开更多
目的:观察黄芪皂甙、丹参酮IIA注射液对大鼠骨骼肌钝挫伤后胚胎型肌球蛋白重链(embryonicmyosin heavy chain,MHC-emb)及波形蛋白(vimentin)mRNA表达的影响。方法:用打击装置将120只雄性Wistar大鼠右侧腓肠肌中段造成钝挫伤模型,随机分...目的:观察黄芪皂甙、丹参酮IIA注射液对大鼠骨骼肌钝挫伤后胚胎型肌球蛋白重链(embryonicmyosin heavy chain,MHC-emb)及波形蛋白(vimentin)mRNA表达的影响。方法:用打击装置将120只雄性Wistar大鼠右侧腓肠肌中段造成钝挫伤模型,随机分为5组,在损伤局部分别注射黄芪皂甙、丹参酮IIA、黄芪皂甙丹参酮IIA混合液、黄芪丹参混合液及生理盐水。以后每3天注射1次,直到损伤后第27天。各组分别于损伤后第1、4、7、14、28和42天取损伤处骨骼肌标本。采用荧光定量聚合酶链式反应(realtime quantitativePCR)方法分析MHC-emb及波形蛋白mRNA表达。结果:(1)在骨骼肌急性钝挫伤修复早期,各组MHC-embmRNA和波形蛋白mRNA表达量均明显升高,分别于第7～14天和第4天达到高峰,然后下降。(2)从第4天至42天,各干预组MHC-emb mRNA表达水平显著高于生理盐水组,黄芪皂甙丹参酮IIA混合组和黄芪丹参组显著高于黄芪皂甙组和丹参酮IIA组。(3)从第4天至28天,各干预组波形蛋白mRNA表达水平显著低于生理盐水组,黄芪皂甙丹参酮IIA混合组和黄芪丹参组显著低于黄芪皂甙组和丹参酮IIA组。结论:在急性骨骼肌钝挫伤修复过程中,黄芪皂甙、丹参酮IIA能促进MHC-emb mRNA表达,抑制波形蛋白mRNA表达,但其单独使用时的作用均弱于黄芪丹参,混合使用效果与黄芪丹参基本一致。展开更多
目的:观察黄芪皂甙和丹参酮ⅡA对大鼠骨骼肌急性钝挫伤后胚胎型肌球蛋白重链(embryonic Myosin Heavy Chain,MHC-emb)和波形蛋白(vimentin)表达的影响。方法:80只雄性Wistar大鼠(体重180～200g)随机分为A组(黄芪皂甙组)、B组(丹参酮ⅡA...目的:观察黄芪皂甙和丹参酮ⅡA对大鼠骨骼肌急性钝挫伤后胚胎型肌球蛋白重链(embryonic Myosin Heavy Chain,MHC-emb)和波形蛋白(vimentin)表达的影响。方法:80只雄性Wistar大鼠(体重180～200g)随机分为A组(黄芪皂甙组)、B组(丹参酮ⅡA组)、C组(黄芪皂甙+丹参酮ⅡA组)、D组(黄芪丹参注射液组)、E组(生理盐水对照组),每组16只。采用打击装置造成右侧腓肠肌中段钝挫伤模型,分别于损伤局部注射相应药物,并于损伤后4、7、14和28天进行腓肠肌损伤部位取材。Western Blotting方法检测各组MHC-emb和波形蛋白表达量的变化。结果:①与生理盐水组相比,各干预组MHC-emb表达均明显升高,差异有统计学意义(P<0.05),这种情况一直持续到伤后28天;其中又以C组和D组升高最为明显;②与生理盐水组相比,各干预组波形蛋白表达均明显降低,差异有统计学意义(P<0.05),这种情况一直持续到伤后28天;其中又以C组和D组降低最为明显。结论:在急性骨骼肌钝挫伤修复过程中,黄芪皂甙、丹参酮ⅡA均能促进MHC-embmRNA表达,抑制波形蛋白mRNA表达,联合使用时效果最佳,与黄芪丹参复方成分基本一致。展开更多
目的探讨重组反义波形蛋白cDNA逆转录病毒重组质粒对体外培养损伤的星形胶质细胞(astrocyte,AST)波形蛋白(vim entin)表达的影响。方法采用体外培养AST划伤模型,设实验组及对照组,通过免疫荧光、RT-PCR、W est-ern b lot等方法,研究反...目的探讨重组反义波形蛋白cDNA逆转录病毒重组质粒对体外培养损伤的星形胶质细胞(astrocyte,AST)波形蛋白(vim entin)表达的影响。方法采用体外培养AST划伤模型,设实验组及对照组,通过免疫荧光、RT-PCR、W est-ern b lot等方法,研究反义波形蛋白逆转录病毒感染对损伤AST波形蛋白表达的影响。结果反义波形蛋白逆转录病毒使损伤AST生长抑制,突起回缩,波形蛋白mRNA及蛋白水平表达降低。结论反义波形蛋白可有效抑制体外培养损伤AST的生长及其波形蛋白的表达。展开更多
文摘As a kind of cytoskeleton protein,vimentin is a major member of intermediate filament family.Vimentin is found mainly in mesenchymal cells,and its expression and phosphorylation are regulated by many factors.In the past,vimentin was revealed as a scaffold maintaining cellular integrity,and recent studies shed lights on the evidence that vimentin played many important roles in cellular adhension,growth,apoptosis,cell signaling as well as inflammatory response.This article summarizes the recent progress of vimentin about its expression and function.Abstract:SUMM ARY As a kind of cytoskeleton protein,vimentin is a majormember of intermed iate filament fam i-ly.V imentin is found mainly in mesenchymal cells,and its expression and phosphorylation are regulated by many factors.In the past,vimentin was revealed as a scaffold maintaining cellular integrity,and re-cent stud ies shed lights on the evidence that vimentin played many important roles in cellular adhension,growth,apoptosis,cell signaling as well as inflammatory response.This article summarizes the recent progress of vimentin about its expression and function.
文摘目的:观察黄芪皂甙和丹参酮ⅡA对大鼠骨骼肌急性钝挫伤后胚胎型肌球蛋白重链(embryonic Myosin Heavy Chain,MHC-emb)和波形蛋白(vimentin)表达的影响。方法:80只雄性Wistar大鼠(体重180～200g)随机分为A组(黄芪皂甙组)、B组(丹参酮ⅡA组)、C组(黄芪皂甙+丹参酮ⅡA组)、D组(黄芪丹参注射液组)、E组(生理盐水对照组),每组16只。采用打击装置造成右侧腓肠肌中段钝挫伤模型,分别于损伤局部注射相应药物,并于损伤后4、7、14和28天进行腓肠肌损伤部位取材。Western Blotting方法检测各组MHC-emb和波形蛋白表达量的变化。结果:①与生理盐水组相比,各干预组MHC-emb表达均明显升高,差异有统计学意义(P<0.05),这种情况一直持续到伤后28天;其中又以C组和D组升高最为明显;②与生理盐水组相比,各干预组波形蛋白表达均明显降低,差异有统计学意义(P<0.05),这种情况一直持续到伤后28天;其中又以C组和D组降低最为明显。结论:在急性骨骼肌钝挫伤修复过程中,黄芪皂甙、丹参酮ⅡA均能促进MHC-embmRNA表达,抑制波形蛋白mRNA表达,联合使用时效果最佳,与黄芪丹参复方成分基本一致。
文摘目的探讨重组反义波形蛋白cDNA逆转录病毒重组质粒对体外培养损伤的星形胶质细胞(astrocyte,AST)波形蛋白(vim entin)表达的影响。方法采用体外培养AST划伤模型,设实验组及对照组,通过免疫荧光、RT-PCR、W est-ern b lot等方法,研究反义波形蛋白逆转录病毒感染对损伤AST波形蛋白表达的影响。结果反义波形蛋白逆转录病毒使损伤AST生长抑制,突起回缩,波形蛋白mRNA及蛋白水平表达降低。结论反义波形蛋白可有效抑制体外培养损伤AST的生长及其波形蛋白的表达。
