目的造影剂诱导的急性肾损伤是临床常见并发症。文中探讨法舒地尔通过抑制Rho/ROCK信号通路改善肾血流动力学障碍、抑制细胞凋亡等肾保护作用。方法选取40只BALB/C野生型小鼠行单侧肾蒂结扎术。术后1周按照随机数字表法分为4组(n=10):对照组、注射碘克沙醇诱导的造影剂肾病模型组(CM组)、低剂量法舒地尔干预组(LD组)和高剂量法舒地尔干预组(HD组)。CM、LD和HD组小鼠按4.0 g I/kg剂量经尾静脉注射碘克沙醇注射液,对照组小鼠注射等剂量的等渗盐水。分别于注射碘克沙醇前12、2 h以及注射后4h的3个时间点,按高剂量10mg/kg和低剂量3 mg/kg予HD和LD组小鼠腹腔注射法舒地尔注射液。造模后24 h分别检测各组小鼠肾动脉血流量、血清及尿液肾功能标志物、肾组织形态学变化以及细胞凋亡相关蛋白的表达水平。结果与CM组尿液β-N-乙酰氨基葡萄糖苷酶水平[(21.82±2.07)U/L]相比,LD与HD组均显著降低,分别为[(14.89±1.48)U/L]和[(15.71±2.24)U/L]。HD组较CM组组织切片TUNEL染色阳性细胞百分比显著降低[(30.79±1.30)%vs(65.74±2....
【英文摘要】
Objective Contrast medium-induced acute kidney injury( CM-AKI) is a serious complication in radiodiagnostic procedures. The present study was to assess the effects of fasudil,a Rho kinase inhibitor,in the prevention of CM-AKI. Methods Forty mice were subjected to unilateral ligation of the left anterior renal pedicle. Seven days later,we divided the animals into four groups: control,CM-AKI,CM-AKI intervened with low-dose fasudil( LDF),and CM-AKI intervened with high-dose fasudil( HDF),those in the latter th...