阿魏酸钠对甘油致小鼠肾脏氧化性损伤的拮抗效应阿魏酸钠对甘油致小鼠肾脏氧化性损伤的拮抗效应

目的从氧化应激角度,探讨阿魏酸钠对实验动物中毒性肾损害的防治作用。方法建立甘油所致小鼠急性肾小管损伤模型,观察不同剂量的阿魏酸钠对肾损伤小鼠肾功能指标、抗氧化指标和组织学的影响。结果在甘油注射后6和72 h,阿魏酸钠100～200 mg·kg^-1 ip能剂量依赖性的降低甘油所致血清尿素氮、肌酐和N-乙酰-β-葡糖苷酶的升高。阿魏酸钠200 mg·kg^-1减少肾组织丙二醛生成,提高肾脏谷胱甘肽含量及谷胱甘肽过氧化物酶、谷胱甘肽S-转移酶、过氧化氢酶和超氧化物歧化酶活性,且可明显减轻肾组织病理改变。结论阿魏酸钠对甘油致肾损伤有防治作用,其机制与增强肾脏抗氧化功能有关。

Antagonistic effect of sodium ferulate on glycerol-induced renal oxidative injury in mice

AIM: To investigate the effect of sodium ferulate (SF) on glycerol-induced renal injury. METHODS: Glycerol solution 50% was injected intramuscularly to establish a model of acute tubular necrosis in mice. SF was administered intraperitoneally at the dose of 100-200 mg.kg-1 at the beginning of establishing the model and its effect was observed by monitoring renal function, antioxidative functions and renal pathologic histology. RESULTS: At 6 and 72 h after glycerol injection, SF treatment (100-200 mg.kg-1) showed significant and dose-dependent antagonistic actions on the increment of blood urea nitrogen (BUN), creatinine (Cr), and N-acetyl-beta-glucosaminidase (NAG) induced by glycerol. The increase of renal malondialdehyde (MDA) content and the decrease of glutathione content, glutathione peroxidase (GSH-Px), glutathione S-transferase (GST), catalase (Cat) and superoxide dismutase (SOD) activities resulting from glycerol injection were remarkably inversed by SF at the dose of 200 mg.kg-1. Meanwhile, improvement of the renal histology was observed as well. CONCLUSION: SF showed beneficial effect on glycerol-induced acute tubular necrosis due to its antioxidative action.