Objective: To investigate the distribution and contents of vimentin(Vim) and glial fibrillary acidic protein(GFAP) immunoreactivities in the central nervous system(CNS)of normal newborn, adult and aged rats.Methods: I...Objective: To investigate the distribution and contents of vimentin(Vim) and glial fibrillary acidic protein(GFAP) immunoreactivities in the central nervous system(CNS)of normal newborn, adult and aged rats.Methods: In this study, thirty healthy and normal Sprague–Dawley rats were simply classified into three groups: Newborn(7 days aged), adult(5 months aged) and aged(24 months aged) rats. Brains and spinal cord were dissected and cut into frozen sections. The expression of Vim and GFAP in CNS were detected by confocal immunofluorescence.Results: In each group, Vim was expressed in all the regions of CNS including the hippocampal, cerebral cortex, the third ventricle and spinal cord, and the expression was highest in neuron-like cell of newborn rats, while Vim was mainly expressed in cell bodies in adult and aged rats. GFAP was expressed in all the regions of CNS including the hippocampal, cerebral cortex, the third ventricle and spinal cord, and the expression was in astrocytes of aged rats. In the third ventricle, Vim was detected in all groups, and only observed in neuron-like cells of newborn. Meanwhile, the GFAP expression showed no significant differences between adult and aged rats in this region. The co-localization of Vim and GFAP were mainly observed in hippocampus and cerebral cortex of newborn,but this co-localization was found in the third ventricle of the rats in all groups.Conclusion: Our data demonstrate for the first time that the expression of Vim and GFAP in the rat's CNS during development. This data may provide a foundation for the further mechanistic studies of these two main intermediate filaments during development of CNS.展开更多
目的探究波形蛋白(vimentin)、肿瘤蛋白p53(tumor protein p53,TP53)和平足蛋白(podoplanin)在卵巢癌中的表达及预后价值。方法收集116例卵巢癌组织标本作为卵巢癌组,另选取90例正常卵巢组织标本作为对照组,RT-PCR法和免疫组织化学法测...目的探究波形蛋白(vimentin)、肿瘤蛋白p53(tumor protein p53,TP53)和平足蛋白(podoplanin)在卵巢癌中的表达及预后价值。方法收集116例卵巢癌组织标本作为卵巢癌组,另选取90例正常卵巢组织标本作为对照组,RT-PCR法和免疫组织化学法测定卵巢组织中vimentin、TP53和podoplanin表达,分析vimentin、TP53和podoplanin蛋白表达与临床病理特征的关系。采用Kaplan-Meier法对3年生存情况进行分析,Log-rank法检测组间生存差异;COX风险回归对影响卵巢癌患者的无生存进展期(progression-free survival,PFS)和总体生存期(overall survival,OS)进行分析。结果卵巢癌组vimentin、TP53和podoplanin m RNA表达水平均高于对照组(均P<0.05)。免疫组织化学检测结果显示,vimentin、TP53和podoplanin蛋白阳性表达以及平均吸光度均高于对照组(均P<0.05)。Vimentin表达与临床分期、淋巴结转移、组织分化程度相关(U=37.286、19.041、35.478,均P<0.05),TP53表达与组织分化程度相关(U=25.481,P<0.05),podoplanin表达与年龄相关(U=24.471,P<0.05)。Vimentin、TP53和podoplanin蛋白阳性表达者3年PFS和OS均低于阴性表达者(均P<0.05)。Cox风险回归分析结果显示,年龄和vimentin表达是影响卵巢癌患者PFS和OS的独立预后因素。结论 Vimentin、TP53和podoplanin在卵巢癌组织中高表达,其中vimentin可作为卵巢癌患者独立预后指标。展开更多
基金supported by National Natural Science Foundation of China(No:81500377)the Joint Special Fund between Yunnan Provincial Science and Technology Department and Kunming Medical University(No:2015FB009,2015FB153)Program for Students Innovation in Kunming Medical University
文摘Objective: To investigate the distribution and contents of vimentin(Vim) and glial fibrillary acidic protein(GFAP) immunoreactivities in the central nervous system(CNS)of normal newborn, adult and aged rats.Methods: In this study, thirty healthy and normal Sprague–Dawley rats were simply classified into three groups: Newborn(7 days aged), adult(5 months aged) and aged(24 months aged) rats. Brains and spinal cord were dissected and cut into frozen sections. The expression of Vim and GFAP in CNS were detected by confocal immunofluorescence.Results: In each group, Vim was expressed in all the regions of CNS including the hippocampal, cerebral cortex, the third ventricle and spinal cord, and the expression was highest in neuron-like cell of newborn rats, while Vim was mainly expressed in cell bodies in adult and aged rats. GFAP was expressed in all the regions of CNS including the hippocampal, cerebral cortex, the third ventricle and spinal cord, and the expression was in astrocytes of aged rats. In the third ventricle, Vim was detected in all groups, and only observed in neuron-like cells of newborn. Meanwhile, the GFAP expression showed no significant differences between adult and aged rats in this region. The co-localization of Vim and GFAP were mainly observed in hippocampus and cerebral cortex of newborn,but this co-localization was found in the third ventricle of the rats in all groups.Conclusion: Our data demonstrate for the first time that the expression of Vim and GFAP in the rat's CNS during development. This data may provide a foundation for the further mechanistic studies of these two main intermediate filaments during development of CNS.
文摘目的探究波形蛋白(vimentin)、肿瘤蛋白p53(tumor protein p53,TP53)和平足蛋白(podoplanin)在卵巢癌中的表达及预后价值。方法收集116例卵巢癌组织标本作为卵巢癌组,另选取90例正常卵巢组织标本作为对照组,RT-PCR法和免疫组织化学法测定卵巢组织中vimentin、TP53和podoplanin表达,分析vimentin、TP53和podoplanin蛋白表达与临床病理特征的关系。采用Kaplan-Meier法对3年生存情况进行分析,Log-rank法检测组间生存差异;COX风险回归对影响卵巢癌患者的无生存进展期(progression-free survival,PFS)和总体生存期(overall survival,OS)进行分析。结果卵巢癌组vimentin、TP53和podoplanin m RNA表达水平均高于对照组(均P<0.05)。免疫组织化学检测结果显示,vimentin、TP53和podoplanin蛋白阳性表达以及平均吸光度均高于对照组(均P<0.05)。Vimentin表达与临床分期、淋巴结转移、组织分化程度相关(U=37.286、19.041、35.478,均P<0.05),TP53表达与组织分化程度相关(U=25.481,P<0.05),podoplanin表达与年龄相关(U=24.471,P<0.05)。Vimentin、TP53和podoplanin蛋白阳性表达者3年PFS和OS均低于阴性表达者(均P<0.05)。Cox风险回归分析结果显示,年龄和vimentin表达是影响卵巢癌患者PFS和OS的独立预后因素。结论 Vimentin、TP53和podoplanin在卵巢癌组织中高表达,其中vimentin可作为卵巢癌患者独立预后指标。
