章韵,王海嵘,费爱华,高成金,郑运江

• 1:上海交通大学医学院附属新华医院

摘要(Abstract)：

目的探讨肾康注射液对缺血再灌注致急性肾损伤小鼠的保护作用。方法随机选取相同数量C57BL/6小鼠,夹闭双侧肾动脉不同时间(15、25、45 min),以制备轻、中、重度缺血再灌注急性肾损伤小鼠模型,并根据造模后立即腹腔注射10 m L/kg肾康注射液(SKI)或10 m L/kg无菌生理盐水(NS)下分为6组各6只:Ⅰ轻度损伤+SKI干预组;Ⅱ轻度损伤+NS组;Ⅲ中度损伤+SKI组;Ⅳ中度损伤+NS组;Ⅴ重度损伤+SKI组;Ⅵ重度损伤+NS组;同时设置一组空白对照组(Ⅶ组):只开关腹,不做夹闭肾动脉处理。干预24 h后,处死小鼠取标本,予生化法检测血肌酐(Scr)、血尿素氮(BUN)、组织超氧歧化酶(SOD)及丙二醛(MDA);HE染色法观察肾小管坏死、免疫组织化学染色法观察肾小管细胞凋亡及中性粒细胞浸润;实时PCR检测组织炎症因子表达。结果 SKI干预后轻、中度肾损伤小鼠Scr下降,轻度损伤+SKI组对比轻度损伤+NS组,下降明显(P<0.05);中度损伤+SKI组比中度损伤+NS组Scr明显下降(P<0.05)。同时轻、中度模型组肾组织病理损伤也有所改善,但重度损伤组均无改善。进一步机制探究发现SKI干预后氧化应激改善:SKI干预组较NS干预组肾组织SOD活性更高,MDA则更低(P<0.01)。在组织炎症方面,SKI干预后组织浸润的中性粒细胞减少,i NOS、IL-6表达下降。此外肾小管凋亡减轻。结论SKI可以改善缺血再灌注急性肾损伤小鼠肾功能,并逆转一定程度的病理损伤,其机制与改善氧化应激、炎症反应相关。

关键词(KeyWords)： 肾康注射液;急性肾损伤;缺血再灌注损伤;坏死;氧化应激

Abstract:

Keywords:

基金项目(Foundation): 上海市崇明区科技发展基金(CKY2017-04)

作者(Author): 章韵,王海嵘,费爱华,高成金,郑运江

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