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缺血后处理对大鼠缺血再灌注肾损伤后尿NGAL蛋白表达的影响 被引量:7

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摘要 目的:评估缺血后处理(ischemic postconditioning,IPO)对大鼠缺血再灌注肾损伤(ischemia/reperfusion injury,IRI)的保护作用,及其对尿中性粒细胞明胶酶脂质相关运载蛋白(neutrophil gelatinase-associated lipocalin,NGAL)表达的影响。方法:雄性SD大鼠144只,体重180~200 g,随机分为3组(n=48):缺血再灌注组(IRI组):夹闭双侧肾蒂45 min后恢复灌注;缺血后处理组(IPO组):在IRI组基础上进行短暂反复6遍再灌注10 s/缺血损伤10 s处理后恢复灌注;假手术组(sham组):仅开腹,游离双侧肾脏,分离肾蒂不夹闭;每组于术前及术后2 h、6 h、12 h、24 h、48 h、72 h、96 h收集血、尿液及肾组织标本,苦味酸法检测大鼠血清肌酐(Scr),自动生化分析仪检测大鼠血尿素氮(BUN),ELISA法检测尿NGAL表达改变,显微镜下观察肾组织病理学改变。结果:肾组织病理检查结果示:12 h、24 h、48 h IPO组大鼠肾损伤程度较相应时间IRI组均明显减轻,与肾功能(Scr、BUN)结果一致(P〈0.05);与sham组相比:IPO及IRI组大鼠尿NGAL均在术后2 h开始升高,12 h到达峰值,除再灌注0 h、2 h外,IPO组各时间点尿NGAL表达均明显低于IRI组(P值均〈0.05)。结论:IPO对大鼠缺血再灌注肾损伤肾功能有保护作用,并可降低IRI所致的尿NGAL蛋白表达水平,NGAL可能成为肾IRI新的治疗靶点。
出处 《中国中西医结合肾病杂志》 2016年第4期337-339,I0006,共4页 Chinese Journal of Integrated Traditional and Western Nephrology
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