内毒素致大鼠急性肾损伤早期NGAL和KIM-1的变化

目的研究中性粒细胞明胶酶相关脂质运载蛋白（NGAL）和肾损伤分子-1（KIM-1）在内毒素（LPS）致大鼠急性肾损伤（AKI）早期的表达变化。方法健康雄性Wistar大鼠32只随机分为4组。正常对照组（NC）：经尾静脉注射1ml生理盐水;LPS2、4、6h组：LPS剂量为5mg/kg体重,生理盐水稀释至1ml尾静脉注射,复制AKI模型。造模后在各时间点,ELISA法测大鼠血清和尿液中NGAL的含量及尿液中KIM-1的含量,除蛋白法测定血肌酐（SCr）值并比较各组大鼠光镜下肾脏的病理改变。结果与NC组Scr比较：LPS2h组略升高（P〉0.05）,LPS4、6h组显著升高（P〈0.01）;LPS2、4、6h组血清和尿液中NGAL及尿液中KIM-1的水平均明显高于NC组（P〈0.01）,与LPS2h组相比,LPS4h组血清和尿液中NGAL升高幅度小（P〉0.05）,而尿液中KIM-1显著性升高（P〈0.01）;光镜下,NC组肾组织结构正常,LPS2、4、6h组肾组织出现不同程度的病理改变。结论 NGAL和KIM-1在AKI早期即出现升高,可作为AKI的早期诊断指标,并且KIM-1有明显的时间依赖性,可作为病情监测指标。

Change of NGAL and KIM-1 in the early period of acute kidney injury by lipopolysaccharide-induced in rats

Objective To explore early changes of neutrophil gelatinase associated lipocalin(NGAL) and kideny injury molecule-1(KIM-1) in lipopolysaccharide(LPS)-induced acute kidney injury(AKI) in rats.Methods Thirty-two male Wistar rats were randomized to receive caudal injection of 1 ml normal saline(control group),or 5mg/kg LPS(LPS2,4,6 hour group).After the prescribed time,the blood and urine levels of NGAL and the urine level of KIM-1 were determined with enzyme-linked immunosorbent assay(ELISA),serum creatinine(...