目的探讨血清抗Vinculin足细胞自身抗体在儿童特发性肾病综合征(INS)中的表达阳性率,及对INS诊断、预后的价值。方法采用ELISA方法检测80例INS患儿及320例健康儿童血清Vinculin-IgG抗体水平,根据抗体滴度水平将80例INS患儿分为抗体阳性...目的探讨血清抗Vinculin足细胞自身抗体在儿童特发性肾病综合征(INS)中的表达阳性率,及对INS诊断、预后的价值。方法采用ELISA方法检测80例INS患儿及320例健康儿童血清Vinculin-IgG抗体水平,根据抗体滴度水平将80例INS患儿分为抗体阳性组和阴性组,并对不同组病例的临床资料进行分析。结果与健康儿童相比较,INS患儿抗Vinculin抗体阳性率显著升高(30/80 vs 10/320,P<0.05),抗体阳性率与患儿激素敏感性无关(24/63 vs 6/13,P>0.05)。与抗体阴性INS患儿相比较,抗体阳性INS患儿24 h尿蛋白定量水平升高[(3200.7±1286.8)mg/24 h vs(1051.2±266.3)mg/24 h,P<0.05]。抗体阳性患儿组血清抗Vinculin抗体滴度与INS患儿24 h尿蛋白定量存在相关性(r=0.586,P<0.05),尿蛋白转阴后,抗体滴度较确诊时明显下降(P<0.05)。结论血清抗Vinculin足细胞抗体在INS早期诊断、疗效评估、预后判断中可能具有重要的临床意义。展开更多
Rho-associated protein kinase is an essential regulator of cytoskeletal dynamics during the process of neurite extension. However, whether Rho kinase regulates microtubule remodeling or the distri- bution of adhesive ...Rho-associated protein kinase is an essential regulator of cytoskeletal dynamics during the process of neurite extension. However, whether Rho kinase regulates microtubule remodeling or the distri- bution of adhesive proteins to mediate neurite outgrowth remains unclear. By specifically modulat- ing Rho kinase activity with pharmacological agents, we studied the morpho-dynamics of neurite outgrowth. We found that lysophosphatidic acid, an activator of Rho kinase, inhibited neurite out- growth, which could be reversed by Y-27632, an inhibitor of Rho kinase. Meanwhile, reorganization of microtubules was noticed during these processes, as indicated by their significant changes in the soma and growth cone. In addition, exposure to lysophosphatidic acid led to a decreased mem- brane distribution of vinculin, a focal adhesion protein in neurons, whereas Y-27632 recruited vin- culin to the membrane. Taken together, our data suggest that Rho kinase regulates rat hippocampal neurite growth and microtubule formation via a mechanism associated with the redistribution of vinculin.展开更多
文摘目的探讨血清抗Vinculin足细胞自身抗体在儿童特发性肾病综合征(INS)中的表达阳性率,及对INS诊断、预后的价值。方法采用ELISA方法检测80例INS患儿及320例健康儿童血清Vinculin-IgG抗体水平,根据抗体滴度水平将80例INS患儿分为抗体阳性组和阴性组,并对不同组病例的临床资料进行分析。结果与健康儿童相比较,INS患儿抗Vinculin抗体阳性率显著升高(30/80 vs 10/320,P<0.05),抗体阳性率与患儿激素敏感性无关(24/63 vs 6/13,P>0.05)。与抗体阴性INS患儿相比较,抗体阳性INS患儿24 h尿蛋白定量水平升高[(3200.7±1286.8)mg/24 h vs(1051.2±266.3)mg/24 h,P<0.05]。抗体阳性患儿组血清抗Vinculin抗体滴度与INS患儿24 h尿蛋白定量存在相关性(r=0.586,P<0.05),尿蛋白转阴后,抗体滴度较确诊时明显下降(P<0.05)。结论血清抗Vinculin足细胞抗体在INS早期诊断、疗效评估、预后判断中可能具有重要的临床意义。
基金supported by the National Natural Science Foundation of China,No.31170941the Fundamental Research Funds for the Central Universities,No.21612424the Science and Technology Planning Project of Guangdong Province,No.2010B031600102
文摘Rho-associated protein kinase is an essential regulator of cytoskeletal dynamics during the process of neurite extension. However, whether Rho kinase regulates microtubule remodeling or the distri- bution of adhesive proteins to mediate neurite outgrowth remains unclear. By specifically modulat- ing Rho kinase activity with pharmacological agents, we studied the morpho-dynamics of neurite outgrowth. We found that lysophosphatidic acid, an activator of Rho kinase, inhibited neurite out- growth, which could be reversed by Y-27632, an inhibitor of Rho kinase. Meanwhile, reorganization of microtubules was noticed during these processes, as indicated by their significant changes in the soma and growth cone. In addition, exposure to lysophosphatidic acid led to a decreased mem- brane distribution of vinculin, a focal adhesion protein in neurons, whereas Y-27632 recruited vin- culin to the membrane. Taken together, our data suggest that Rho kinase regulates rat hippocampal neurite growth and microtubule formation via a mechanism associated with the redistribution of vinculin.
