过敏性紫癜患儿血管内皮细胞损伤及凝血功能变化的临床意义

目的 检测过敏性紫癜(HSP)患儿血浆血栓调节蛋白(TM)、血管性假血友病因子(vWF)水平及凝血状态指标,探讨其在HSP发病机制中的作用及临床意义.方法 检测HSP患儿急性期56例、缓解期50例及30例健康对照者血浆TM、vWF以及D-二聚体、PT、APTT、血小板计数水平,比较它们在HSP患儿不同时期及其在肾受损组及非肾受损组的变化.结果 急性期HSP患儿TM、vWF、D-二聚体、血小板计数高于缓解期和对照组,差异有非常显著性(P=0.000),PT、APTT较缓解期和对照组差异无显著性(P＞0.05).缓解期TM、vWF仍较对照组升高,差异有显著性(P=0.013,P=0.000),D-二聚体、血小板计数、PT、APTT较对照组差异无显著性(P＞0.05).急性期肾功能受损组TM、vWF、D-二聚体高于非肾功能受损组,差异有显著性(P＜0.05,P＜0.01),PT、APTT、血小板计数较非肾功能受损组差异无显著性(P＞0.05).结论 在HSP的发病机制中存在血管内皮细胞损伤及血液高凝状态,血浆TM、vWF、D-二聚体水平测定有助于了解病情活动及是否合并肾脏损害,动态监测有助于观察病情演变、判断预后及指导治疗.

Damage of vascular endothelium and the changes of coagulation in children with Henoch-Schonlein purpura

Objective To investigate the changes and the role of plasma thrombomodulin(TM),von willebrand factor (vWF) ,and coagulation status indicators in children with Henoch-Schonlein purpura(HSP).Methods The plasma concentrations of TM,vWF were measured by ELISA method and the levels of D-dimer,PT,APTT,palatelet count were measured in 56 acute SHP patients,50 recovery patients and 40 healthy controls. Results The plasma levels of TM、vWF、D-dimer、palatelet count in acute group were significantly higher than those in healthy controls group and those of recovery group ( P = 0. 000). The plasma levels of PT、APTT showed no significant difference among three groups( P ＞ 0. 05 ). The plasma levels of TM、vWF in recovery group were significantly higher than those in healthy controls group ( P ＜ 0. 05, P ＜ 0. 01 ), while the levels of D-dimer、palatelet count reduced to nomal levels(P ＞0. 05). As compared to non-renal damage group, The plasma levels of TM、vWF、 D-dimer were higher in renal damage group ( P ＜ 0. 05, P ＜ 0. 01 ), the levels of PT 、APTT、palatelet count showed no significant difference ( P ＞ 0. 05 ). Conclusion The damage of vascular endothelium and hypercoagulability play an important role in the pathogenesis of HSP. Changes of plasma TM、 vWF、palatelet count can be used as an indicator of the early lesion of renal function.