出 处:《中国临床药理学杂志》2017年第2期131-135,共5页The Chinese Journal of Clinical Pharmacology
基 金:广西省自然科学基金重点项目基金资助项目(2011GXNSFD018030);南宁市青秀区科学研究与技术开发计划科技攻关与新产品试制基金资助项目(2013S12)
摘 要:目的研究吊竹梅水提物(AEZPS)对链脲佐菌素(STZ)所致糖尿病肾损伤小鼠的肾保护作用。方法采用尾静脉注射STZ建立糖尿病模型,然后按照体重随机分4组:模型组、大中小3个剂量实验组(吊竹梅提取物相当于生药40,20,10 g·kg^(-1)),每组10只。同时,另设10只健康小鼠作为空白组,模型组与空白组灌胃双蒸水(20 m L·kg^(-1))。灌胃给药28 d,取血。测定空腹血糖(FBG)、血尿素氮(BUN)、血肌酸酐(Scr)和血脂水平,取双肾称重,计算肾指数(肾重/体重)。以苏木精-伊红染色观察肾组织的病理变化。以免疫组化染色观察肾组织的Toll样受体4(TLR4)因子和核转录因子-κB(NF-κB)的表达情况。结果与空白组比较,模型组的空腹血糖、三酰甘油(TG)、总胆固醇(TC)、血尿素氮、血肌酸酐水平和肾指数分别为(28.01±3.94),(1.73±0.29),(3.16±0.39),(15.12±2.23)mmol·L^(-1)和(64.98±4.45)μmol·L^(-1)及(22.36±2.04)mg·g^(-1),明显升高;而高密度脂蛋白胆固醇(HDL-C)水平为(1.57±0.29)mmol·L^(-1),显著下降,差异均有统计学意义(均P<0.01)。与模型组相比,大剂量实验组的FBG、TG、TC、BUN、Scr和肾指数分别为(20.93±3.39),(1.52±0.26),(2.54±0.20),(12.57±1.43)mmol·L^(-1)和(57.36±8.99)μmol·L^(-1)及(19.32±3.68)mg·g^(-1),有明显下降;而HDL-C为(1.81±0.16)mmol·L^(-1),有明显地升高,差异均有统计学意义(P<0.01或P<0.05)。中剂量实验组的FBG、TG、TC和BUN分别为(21.81±4.89),(1.44±0.24),(2.60±0.38)和(13.46±1.73)mmol·L^(-1),明显下降,差异均有统计学意义(P<0.01或P<0.05)。给药后,肾的病理学变化得到改善,肾组织TLR4和NF-κB的表达明显下调。结论 AEZPS可能通过降低血糖,调节血脂、改善肾功能和下调肾组织TLR4和NF-κB的表达来保护糖尿病小鼠的肾。Objective To investigate the protective effects of aqueous extracts of Zebrina pendula Schnizl.( AEZPS) on kidney of diabetic mice. Methods Diabetic mice were induced by intravenous injection of streptozocin( STZ). After identifying diabetes mellitus( DM) mice by fasting blood glucose( FBG) assay,DM mice were randomly assigned as follows: model group,stepwise dose experimental groups( AEZPS: 40,20,10 g · kg^(-1)),each group had ten mice. In addition,10 healthy mice were added as blank group. The model group and blank group were given distilled water( 20 m L·kg^(-1)). The drugs were given to mice daily for 28 d. After 28 days,the FBG levels,blood urea nitrogen( BUN),serum creatinine( Scr) and the blood lipid levels were measured.Pathological changes of kidney were observed through Hematoxylin- eosin staining( HE staining). Immunohistochemical analysis was used to perform the expression of Toll- like receptor 4( TLR4) and nuclear factor- kappa B( NF- κB) in the kidney tissues. Results Compared with blank group,the FBG,triglyceride( TG),total cholesterol( TC),BUN,Scr and kidney index were( 28. 01 ± 3. 94) mmol·L^(-1),( 1. 73 ± 0. 29) mmol·L^(-1),( 3. 16 ± 0. 39)mmo·L^(-1),( 15. 12 ± 2. 23) mmol·L^(-1),( 64. 98 ± 4. 45) μmol·L^(-1)and( 22. 36 ± 2. 04) mg·g^(-1)in model group with statistical difference( all P〈0. 01); the content of high- density lipoprotein cholesterol( HDL- C) was( 1. 57 ± 0. 29)mmol·L^(-1)in model group with statistical difference( P〈0. 01). Compared with model group,FBG,TG,TC,BUN,HDL- C,Scr and kidney index were( 20. 93 ± 3. 39) mmol · L^(-1),( 1. 52 ± 0. 26) mmol · L^(-1),( 2. 54 ± 0. 20)mmol·L^(-1),( 12. 57 ± 1. 43) mmol · L^(-1),( 1. 81 ± 0. 16) mmol · L^(-1),( 57. 36 ± 8. 99) μmol · L^(-1)and( 19. 32 ± 3. 68) mg·g^(-1)in high dose experimental group with statistical differ
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