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The renoprotective effect of diosgenin on aristolochic acid I-induced renal injury in rats: Impact on apoptosis, mitochondrial dynamics and autophagy
被引:0
|作者:
Jin, Chengni
[1
]
Miao, Xin
[1
]
Zhong, Yujie
[1
]
Han, Jiahui
[1
]
Liu, Qi
[1
]
Zhu, Jiachang
[1
]
Xia, Xiaodong
[1
]
Peng, Xiaoli
[1
,2
]
机构:
[1] College of Food Science and Engineering, Northwest AandF University, Yangling Shaanxi,712100, China
[2] Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University (BTBU), Beijing,100048, China
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关键词:
Aristolochic acid I (AA-I) remains a leading cause of aristolochic acid nephropathy (AAN);
however few prevention and treatment strategies exist. In this work;
the nephroprotective effect of diosgenin;
a steroidal saponin distributed abundantly in several plants;
on AA-I-induced renal injury and its underlying mechanism were investigated. Sprague-Dawley rats were intragastrically administered with 30 mg kg-1 d-1 diosgenin two hours before exposure to 10 mg kg-1 d-1 AA-I for consecutive four weeks;
and the histological change;
the renal and liver function;
apoptosis;
autophagy and the involved pathways were investigated. The results showed that diosgenin relieved AA-I-induced renal histological damage;
including mild edematous disorder of renal tubular arrangement and widening of renal tubular lumen. No obvious changes in the hepatic tissue structure were observed in all treatment groups. Moreover;
diosgenin up-regulated the expression of Bcl-2 and down-regulated Bax;
and subsequently inhibited AIF expression and the cleaved form of Caspase-3;
thereby alleviating apoptosis triggered by AA-I. Diosgenin also mitigated AA-I-induced renal mitochondrial dynamics disorder by increasing the expression of mitochondrial dynamics-related proteins including DRP1 and MFN2. Diosgenin inhibited AA-I-evoked autophagy via ULK1-mediated inhibition of the mTOR pathway. Overall;
these results suggest that diosgenin has a protective effect against AA-I-induced renal damage and it may be a potential agent for preventing AA-I-induced AAN. © 2020 The Royal Society of Chemistry;
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页码:7456 / 7467
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