目的:分析血清同型半胱氨酸(Homocysteine,Hcy)、D-二聚体(D-dimer,D-D)指标在脑梗死患者中的表达及临床意义。方法:回顾性收集2020年1月至2023年8月期间本院收治的65例脑梗死患者的临床资料,纳入观察组。同时纳入同期本院收治的非脑梗...目的:分析血清同型半胱氨酸(Homocysteine,Hcy)、D-二聚体(D-dimer,D-D)指标在脑梗死患者中的表达及临床意义。方法:回顾性收集2020年1月至2023年8月期间本院收治的65例脑梗死患者的临床资料,纳入观察组。同时纳入同期本院收治的非脑梗死患者65例作为对照组。分析比较两组的血清Hcy、D-D水平。根据美国国立卫生研究院卒中量表评分将观察组分为轻型组、中型组、重型组,比较三组患者血清Hcy、D-D水平;统计患者预后情况,并绘制受试者工作曲线(Receiver operating characteristic,ROC)分析血清Hcy、D-D对预后的预测价值。结果:65例脑梗死患者中31例预后不良,34例预后良好。观察组血清Hcy、D-D水平均显著高于对照组(P<0.05)。不同神经缺损程度患者的血清Hcy、D-D水平有显著差异(P<0.05)。预后不良组血清Hcy、D-D水平均显著高于对照组(P<0.05)。绘制ROC曲线,血清Hcy、D-D及联合预测预后的曲线下面积(Area under curve,AUC)均>0.70,有一定的预测价值,且联合预测价值更高。结论:血清Hcy、D-D在脑梗死患者中呈高水平表达,神经缺损程度越重,血清Hcy、D-D越高,且可预测患者预后情况。展开更多
A novel modified electrode was constructed by casting α-cyclodextrin-incorporated carbon nanotubes on graphite surface to form a functionalized interfacial layer. The modified electrode exhibits an excellent electroc...A novel modified electrode was constructed by casting α-cyclodextrin-incorporated carbon nanotubes on graphite surface to form a functionalized interfacial layer. The modified electrode exhibits an excellent electrocatalytic activity for the oxidation of L-cysteine. The currents(measured by different pulse voltammetric techniques) increase linearly with the increase of the concentration of L-cysteine in the range from 1×10 -6 to 2×10 -3 mol/L. The detection limit is 2×10 -7 mol/L. The modified electrode has the best properties of the two components of the system, such as the electrocatalytic properties of carbon nanotubes and the molecular recognition and accumulation abilities of α-cyclodextrin. The result demonstrates that it has a good stability and reproducibility and is available in the detection of L-cysteine in urine.展开更多
文摘目的:分析血清同型半胱氨酸(Homocysteine,Hcy)、D-二聚体(D-dimer,D-D)指标在脑梗死患者中的表达及临床意义。方法:回顾性收集2020年1月至2023年8月期间本院收治的65例脑梗死患者的临床资料,纳入观察组。同时纳入同期本院收治的非脑梗死患者65例作为对照组。分析比较两组的血清Hcy、D-D水平。根据美国国立卫生研究院卒中量表评分将观察组分为轻型组、中型组、重型组,比较三组患者血清Hcy、D-D水平;统计患者预后情况,并绘制受试者工作曲线(Receiver operating characteristic,ROC)分析血清Hcy、D-D对预后的预测价值。结果:65例脑梗死患者中31例预后不良,34例预后良好。观察组血清Hcy、D-D水平均显著高于对照组(P<0.05)。不同神经缺损程度患者的血清Hcy、D-D水平有显著差异(P<0.05)。预后不良组血清Hcy、D-D水平均显著高于对照组(P<0.05)。绘制ROC曲线,血清Hcy、D-D及联合预测预后的曲线下面积(Area under curve,AUC)均>0.70,有一定的预测价值,且联合预测价值更高。结论:血清Hcy、D-D在脑梗死患者中呈高水平表达,神经缺损程度越重,血清Hcy、D-D越高,且可预测患者预后情况。
文摘A novel modified electrode was constructed by casting α-cyclodextrin-incorporated carbon nanotubes on graphite surface to form a functionalized interfacial layer. The modified electrode exhibits an excellent electrocatalytic activity for the oxidation of L-cysteine. The currents(measured by different pulse voltammetric techniques) increase linearly with the increase of the concentration of L-cysteine in the range from 1×10 -6 to 2×10 -3 mol/L. The detection limit is 2×10 -7 mol/L. The modified electrode has the best properties of the two components of the system, such as the electrocatalytic properties of carbon nanotubes and the molecular recognition and accumulation abilities of α-cyclodextrin. The result demonstrates that it has a good stability and reproducibility and is available in the detection of L-cysteine in urine.
