A transient ischemic attack(TIA)can cause reversible and delayed impairment of cognition,but the specific mechanisms arestill unclear.Annexin al(ANXA1)is a phospholipid-binding protein.Here,we confirmed that cognition...A transient ischemic attack(TIA)can cause reversible and delayed impairment of cognition,but the specific mechanisms arestill unclear.Annexin al(ANXA1)is a phospholipid-binding protein.Here,we confirmed that cognition and hippocampal synapses were impaired in TIA-treated mice,and this could be rescued by multiple mild stimulations(MMS).TIA promoted the interaction of ANXAl and CX3CR1,increased the membrane distribution of CX3CR1 in microglila,and thus enhanced the CX3CR1 and CX3CL1 interaction.These phenomena induced by TIA could be reversed by MMS.Meanwhile,the CX3CR1 membrane distribution and CX3CR1-CX3CL1 interaction were upregulated in primary cultured microglia overexpressing ANXAl,and the spine density was significantly reduced in co-cultured microglia overexpressing ANXAl and neurons.Moreover,ANXAl overexpression in microglia abolished the protection of MMS after TIA.Collectively,our study provides a potential strategy for treating the delayed synaptic injury caused by TIA.展开更多
目的:检测膜联蛋白A1(annexin A1,ANXA1)在小细胞肺癌(small-cell lung cancer,SCLC)组织中的表达水平,并探讨其临床意义。方法:采用实时荧光定量PCR法检测ANXA1 m RNA在102例SCLC组织、36例癌旁组织和66例正常肺组织中的表达水平,免疫...目的:检测膜联蛋白A1(annexin A1,ANXA1)在小细胞肺癌(small-cell lung cancer,SCLC)组织中的表达水平,并探讨其临床意义。方法:采用实时荧光定量PCR法检测ANXA1 m RNA在102例SCLC组织、36例癌旁组织和66例正常肺组织中的表达水平,免疫组织化学法检测ANXA1蛋白在36例癌及癌旁组织中的表达情况,分析ANXA1 m RNA表达水平与SCLC患者临床病理特征及预后的关系。结果:无论在基因还是蛋白水平,ANXA1在SCLC组织中的表达水平较正常组织明显降低,差异具有统计学意义(P<0.01)。ANXA1的表达与疾病的分期、对化疗的敏感性及生存时间密切相关,差异均具有统计学意义(P值均<0.05)。高表达ANXA1患者的总生存和无进展生存优于低表达者,差异均具有统计学意义(P值均<0.001)。单因素和多因素方差分析发现,ANXA1可作为SCLC的独立预后指标。结论:ANXA1可能作为评估SCLC临床预后的潜在靶标。展开更多
基金This work.was supported bythe National Natural Science Foundation of China(31771126).
文摘A transient ischemic attack(TIA)can cause reversible and delayed impairment of cognition,but the specific mechanisms arestill unclear.Annexin al(ANXA1)is a phospholipid-binding protein.Here,we confirmed that cognition and hippocampal synapses were impaired in TIA-treated mice,and this could be rescued by multiple mild stimulations(MMS).TIA promoted the interaction of ANXAl and CX3CR1,increased the membrane distribution of CX3CR1 in microglila,and thus enhanced the CX3CR1 and CX3CL1 interaction.These phenomena induced by TIA could be reversed by MMS.Meanwhile,the CX3CR1 membrane distribution and CX3CR1-CX3CL1 interaction were upregulated in primary cultured microglia overexpressing ANXAl,and the spine density was significantly reduced in co-cultured microglia overexpressing ANXAl and neurons.Moreover,ANXAl overexpression in microglia abolished the protection of MMS after TIA.Collectively,our study provides a potential strategy for treating the delayed synaptic injury caused by TIA.
文摘目的:检测膜联蛋白A1(annexin A1,ANXA1)在小细胞肺癌(small-cell lung cancer,SCLC)组织中的表达水平,并探讨其临床意义。方法:采用实时荧光定量PCR法检测ANXA1 m RNA在102例SCLC组织、36例癌旁组织和66例正常肺组织中的表达水平,免疫组织化学法检测ANXA1蛋白在36例癌及癌旁组织中的表达情况,分析ANXA1 m RNA表达水平与SCLC患者临床病理特征及预后的关系。结果:无论在基因还是蛋白水平,ANXA1在SCLC组织中的表达水平较正常组织明显降低,差异具有统计学意义(P<0.01)。ANXA1的表达与疾病的分期、对化疗的敏感性及生存时间密切相关,差异均具有统计学意义(P值均<0.05)。高表达ANXA1患者的总生存和无进展生存优于低表达者,差异均具有统计学意义(P值均<0.001)。单因素和多因素方差分析发现,ANXA1可作为SCLC的独立预后指标。结论:ANXA1可能作为评估SCLC临床预后的潜在靶标。
