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成都中医药大学,成都 611137
李彦桥,在读硕士,从事中药药理与毒理研究,E-mail:614756744@qq.com
孟宪丽,教授,从事中药药理与毒理研究,E-mail:xlm999@cdutcm.edu.cn
收稿日期:2018-08-06,
网络出版日期:2018-11-05,
纸质出版日期:2019-06-05
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李彦桥, 黄婉奕, 梁雨生, 等. 芦荟大黄素对小鼠肾毒性的作用机制[J]. 中国实验方剂学杂志, 2019,25(11):48-53.
Yan-qiao LI, Wan-yi HUANG, Yu-sheng LIANG, et al. Mechanism of Nephrotoxicity of Aloe Emodin in Mice[J]. Chinese journal of experimental traditional medical formulae, 2019, 25(11): 48-53.
李彦桥, 黄婉奕, 梁雨生, 等. 芦荟大黄素对小鼠肾毒性的作用机制[J]. 中国实验方剂学杂志, 2019,25(11):48-53. DOI: 10.13422/j.cnki.syfjx.20190424.
Yan-qiao LI, Wan-yi HUANG, Yu-sheng LIANG, et al. Mechanism of Nephrotoxicity of Aloe Emodin in Mice[J]. Chinese journal of experimental traditional medical formulae, 2019, 25(11): 48-53. DOI: 10.13422/j.cnki.syfjx.20190424.
目的:
2
研究长期给予不同剂量的芦荟大黄素导致小鼠肾毒性,并探讨其毒性机制。
方法:
2
将30只昆明种小鼠随机分为雌雄空白组、雌雄芦荟大黄素低、高剂量组(0.8,1.6 g·kg
-1
)。芦荟大黄素各剂量组连续灌胃给药11周,每日早晚各1次。采用生化试剂盒检测小鼠血清尿素氮(urea nitrogen,BUN),肌酐(creatinine,SCr),超氧化物歧化酶(superoxide dismustase,SOD)和丙二醛(malondialdehyde,MDA)含量,肾脏总谷胱甘肽(total glutathione,T-GSH)/氧化性谷胱甘肽试剂盒(oxidized glutathione,GSSG)和谷胱甘肽过氧化物酶(glutathione peroxidase,GSH-Px)水平;酶联免疫吸附试验(ELISA)检测血清中肿瘤坏死因子-
α
(tumor necrosis factor alpha,TNF-
α
)和白细胞介素-6(interleukins-6,IL-6)水平;苏木素-伊红(HE)染色检测肾脏病理变化;免疫组化检测肾脏半胱氨酸蛋白酶-3(cysteine aspartic acid specific protease-3,Caspase-3)和转化生长因子-
β
1
(transforming growth factor-
β
1
,TGF-
β
1
)蛋白表达。
结果:
2
与同性别空白组比较,芦荟大黄素高剂量组雌、雄小鼠血清中BUN含量升高(
P
<
0.05,
P
<
0.01),芦荟大黄素高剂量组雄性小鼠血清中SCr含量升高(
P
<
0.05),芦荟大黄素低剂量组肾小管轻度损伤,高剂量肾小管和肾小球中度损伤;与空白组比较,芦荟大黄素高剂量组雌、雄小鼠血清MDA含量升高(
P
<
0.05),SOD活性降低(
P
<
0.05),芦荟大黄素高剂量组雌雄小鼠肾脏中GSH/GSSG含量降低(
P
<
0.05),雄性小鼠Caspase-3蛋白表达增加(
P
<
0.05);与空白组比较,芦荟大黄素高剂量组雄性小鼠TNF-
α
和IL-6含量升高(
P
<
0.05),芦荟大黄素低、高剂量组雌雄小鼠肾脏TGF-
β
1
蛋白表达均增加(
P
<
0.05)。
结论:
2
芦荟大黄素1.6 g·kg
-1
给药11周,对小鼠肾脏有毒性作用,其机制与机体氧化应激、细胞凋亡和TGF-
β
1
蛋白表达有关。
Objective:
2
To study nephrotoxicity induced by long-term administration of different doses of aloe-emodin in mice
and explore its mechanism.
Method:
2
A total of 30 male and female Kunming mice were randomly divided into normal control group
and low-dose aloe-emodin group
high-dose aloe-emodin group (0.8
1.6 g·kg
-1
). Every dose of group was administered intragastrically for 11 weeks
twice daily. effect of serum urea nitrogen (BUN)
creatinine (SCr)
superoxide dismutase (SOD)
malondialdehyde (MDA)
Glutathione (GSH/GSSG) and Glutathione Peroxidase (GSH-Px) levels were detected by biochemical kits according to manufacturer's instruction. Enzyme-linked immune assay was used to determine serum tumor necrosis factor (TNF)-
α
and interleukins(IL)-6 levels. Hematoxylin eosin(HE) staining was used to detect renal pathological changes in kidney tissues
and cysteine aspartic acid specific protease(Caspase)-3 and transforming growth factor(TGF)-
β
1
proteins were determined by immunohistochemistry.
Result:
2
According to results
compared with normal control group
the levels of BUN and SCr in serum with high-dose aloe-emodin were increased. The renal tubules in low-dose group were mildly injured
while renal tubules and glomeruli of high-dose group were moderately damaged. Compared with normal control group
the level of SOD was significant decreased (
P
<
0.05)
MDA was increased (
P
<
0.05)
the levels of GSH/GSSG in kidneys of high-dose groups were decreased (
P
<
0.05). In high-dose group
the expression of Caspase-3 protein was increased in kidneys
especially in males (
P
<
0.05). Compared with normal control group
the levels of TNF-
α
and IL-6 were increased
the expression of TGF-
β
1
protein in kidneys was increased in low-dose and high-dose groups (
P
<
0.05).
Conclusion:
2
results show that 1.6 g·kg
-1
aloe-emodin was administered intragastrically for 11 weeks
which had toxic effects on kidney in mice. The mechanism may be related to oxidative stress
apoptosis and TGF-
β
1
protein expression.
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