同种异体肾移植患者肱动脉内皮依赖性舒张功能损伤的研究

目的 研究同种异体肾移植患者肱动脉内皮依赖性舒张功能损伤。方法 应用高频超声分别探测肾移植术后应用环孢素A抗排异、肾移植术后应用他克莫司(FK-506)抗排异及正常对照3组患者静息条件下、反应性充血后及舌下含服硝酸甘油后肱动脉内径及内径变化，从而判断肱动脉内皮依赖性舒张功能。结果 反应性充血后，肾移植术后患者肱动脉内径舒张的绝对值及相对值均明显小于正常对照，含服硝酸甘油后3组患者肱动脉内径的舒张差别无显著性意义。应用环孢素A抗排异与应用FK-506抗排异组在反应性充血后肱动脉内径的绝对值与相对值差异无显著性意义。结论 同种异体肾移植患者肱动脉内皮依赖性舒张功能受到损伤。

Study on endothelial dependent vasodilation function of brachial artery in renal allograft recipients

Objective To detect the endothelial dependent vasodilation function of brachial artery in renal allograft recipients. Methods Using high resolution ultrasound, the inner diameter and changes of diameter of brachial artery at rest, after reactive hyperemia and sublingual nitroglycerin were measured in 20 cyclosporine treated allograft recipients, 20 FK 506 treated allograft recipients and 20 controls, reactive hyperemia mediated vasodilation was measured to assess endothelial dependent vasodilation, nitroglycerin mediated vasodilation was measured to assess endothelial independent vasodilation, in order know if the endothelial function was injuried by comparing the endothelial dependent and endothelial independent vasodilation. Results After reactive hyperemia, the absolute and relative values(reactive increase) in brachial artery inner diameter were significantly reduced in renal allograft recipients, nitroglycerin mediated vasodilation was similar between renal allograft recipients and controls. There was no significant difference of the inner diameter of brachial artery in renal allograft recipients treated with cyclosporine and FK 506 after reactive hyperemia. Conclusions The endothelial dependent vasodilation function of brachial artery was injuried in renal allograft recipients.