Na^(+)/K^(+)-ATPase is a transmembrane protein that has important roles in the maintenance of electrochemical gradients across cell membranes by transporting three Na^(+)out of and two K^(+)into cells.Additionally,Na^...Na^(+)/K^(+)-ATPase is a transmembrane protein that has important roles in the maintenance of electrochemical gradients across cell membranes by transporting three Na^(+)out of and two K^(+)into cells.Additionally,Na^(+)/K^(+)-ATPase participates in Ca^(2+)-signaling transduction and neurotransmitter release by coordinating the ion concentration gradient across the cell membrane.Na^(+)/K^(+)-ATPase works synergistically with multiple ion channels in the cell membrane to form a dynamic network of ion homeostatic regulation and affects cellular communication by regulating chemical signals and the ion balance among different types of cells.Therefo re,it is not surprising that Na^(+)/K^(+)-ATPase dysfunction has emerged as a risk factor for a variety of neurological diseases.However,published studies have so far only elucidated the important roles of Na^(+)/K^(+)-ATPase dysfunction in disease development,and we are lacking detailed mechanisms to clarify how Na^(+)/K^(+)-ATPase affects cell function.Our recent studies revealed that membrane loss of Na^(+)/K^(+)-ATPase is a key mechanism in many neurological disorders,particularly stroke and Parkinson's disease.Stabilization of plasma membrane Na^(+)/K^(+)-ATPase with an antibody is a novel strategy to treat these diseases.For this reason,Na^(+)/K^(+)-ATPase acts not only as a simple ion pump but also as a sensor/regulator or cytoprotective protein,participating in signal transduction such as neuronal autophagy and apoptosis,and glial cell migration.Thus,the present review attempts to summarize the novel biological functions of Na^(+)/K^(+)-ATPase and Na^(+)/K^(+)-ATPase-related pathogenesis.The potential for novel strategies to treat Na^(+)/K^(+)-ATPase-related brain diseases will also be discussed.展开更多
目的:探究动态对比增强磁共振成像(dynamic contrast-enhanced magnetic resonance imaging,DCE-MRI)技术定量容积运转常数(Ktrans)、速率常数(K_(ep))指导肝脏肿块定性诊断的价值。方法:选取2018年1月—2022年12月期间苏州市相城区中...目的:探究动态对比增强磁共振成像(dynamic contrast-enhanced magnetic resonance imaging,DCE-MRI)技术定量容积运转常数(Ktrans)、速率常数(K_(ep))指导肝脏肿块定性诊断的价值。方法:选取2018年1月—2022年12月期间苏州市相城区中医医院收治的肝脏不明肿块患者共计92例,全部研究对象均接受DCE-MRI定量的Ktrans、K_(ep)检测,以组织病理学活检结果作为金标准,评估DCE-MRI定量的K^(trans)、K_(ep)检测应用于肝脏肿块定性诊断的价值。结果:在92例研究对象中,最终确诊为恶性病变者28例;非恶性病变者64例。两组研究对象的DCE-MRI检测结果显示,恶性病变组患者的Ktrans、K_(ep)水平均高于非恶性病变组,差异存在统计学意义(P<0.05);ROC曲线显示,DCE-MRI定量K^(trans)、K_(ep)应用于肝脏肿块定性检查的曲线下面积(AUC)分别为0.878、0.922,两项指标联合诊断的AUC为0.972。由此可见,K^(trans)、K_(ep)应用于肝脏肿块定性均具有较高的评估价值(P<0.05),且联合检测的评估效果优于单项检测。结论:DCE-MRI定量K^(trans)、K_(ep)应用于肝脏肿块定性均具有较高的评估价值,且联合检测的评估效果优于单项检测,值得借鉴应用。展开更多
基金supported by the National Natural Science Foundation of China,No.82173800 (to JB)Shenzhen Science and Technology Program,No.KQTD20200820113040070 (to JB)。
文摘Na^(+)/K^(+)-ATPase is a transmembrane protein that has important roles in the maintenance of electrochemical gradients across cell membranes by transporting three Na^(+)out of and two K^(+)into cells.Additionally,Na^(+)/K^(+)-ATPase participates in Ca^(2+)-signaling transduction and neurotransmitter release by coordinating the ion concentration gradient across the cell membrane.Na^(+)/K^(+)-ATPase works synergistically with multiple ion channels in the cell membrane to form a dynamic network of ion homeostatic regulation and affects cellular communication by regulating chemical signals and the ion balance among different types of cells.Therefo re,it is not surprising that Na^(+)/K^(+)-ATPase dysfunction has emerged as a risk factor for a variety of neurological diseases.However,published studies have so far only elucidated the important roles of Na^(+)/K^(+)-ATPase dysfunction in disease development,and we are lacking detailed mechanisms to clarify how Na^(+)/K^(+)-ATPase affects cell function.Our recent studies revealed that membrane loss of Na^(+)/K^(+)-ATPase is a key mechanism in many neurological disorders,particularly stroke and Parkinson's disease.Stabilization of plasma membrane Na^(+)/K^(+)-ATPase with an antibody is a novel strategy to treat these diseases.For this reason,Na^(+)/K^(+)-ATPase acts not only as a simple ion pump but also as a sensor/regulator or cytoprotective protein,participating in signal transduction such as neuronal autophagy and apoptosis,and glial cell migration.Thus,the present review attempts to summarize the novel biological functions of Na^(+)/K^(+)-ATPase and Na^(+)/K^(+)-ATPase-related pathogenesis.The potential for novel strategies to treat Na^(+)/K^(+)-ATPase-related brain diseases will also be discussed.
文摘目的:探究动态对比增强磁共振成像(dynamic contrast-enhanced magnetic resonance imaging,DCE-MRI)技术定量容积运转常数(Ktrans)、速率常数(K_(ep))指导肝脏肿块定性诊断的价值。方法:选取2018年1月—2022年12月期间苏州市相城区中医医院收治的肝脏不明肿块患者共计92例,全部研究对象均接受DCE-MRI定量的Ktrans、K_(ep)检测,以组织病理学活检结果作为金标准,评估DCE-MRI定量的K^(trans)、K_(ep)检测应用于肝脏肿块定性诊断的价值。结果:在92例研究对象中,最终确诊为恶性病变者28例;非恶性病变者64例。两组研究对象的DCE-MRI检测结果显示,恶性病变组患者的Ktrans、K_(ep)水平均高于非恶性病变组,差异存在统计学意义(P<0.05);ROC曲线显示,DCE-MRI定量K^(trans)、K_(ep)应用于肝脏肿块定性检查的曲线下面积(AUC)分别为0.878、0.922,两项指标联合诊断的AUC为0.972。由此可见,K^(trans)、K_(ep)应用于肝脏肿块定性均具有较高的评估价值(P<0.05),且联合检测的评估效果优于单项检测。结论:DCE-MRI定量K^(trans)、K_(ep)应用于肝脏肿块定性均具有较高的评估价值,且联合检测的评估效果优于单项检测,值得借鉴应用。
