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Niclosamide ethanolamine protects kidney in adriamycin nephropathy by regulating mitochondrial redox balance
Pengxun Han1, Changjian Yuan1, Yao Wang1
1Department of Nephrology, Shenzhen Traditional Chinese Medicine Hospital, The Fourth Clinical Medical College of Guangzhou University of Chinese Medicine Shenzhen, Guangdong, China.
Abstract:
Chronic kidney disease (CKD) is commonly characterized by proteinuria and leads to progressive glomerulosclerosis and tubulointerstitial fibrosis. Accumulating evidence implicates mitochondrial dysfunction including reactive oxygen species (ROS) overproduction in the pathogenesis of CKD. Mitochondrial function and ROS production are regulated by mitochondrial uncoupling. Niclosamide ethanolamine salt (NEN) is a mild mitochondrial uncoupler, which reduces urinary albumin excretion in mice with diabetic kidney disease. However, its role in nondiabetic kidney disease has not been investigated. Here we show that NEN exerts renoprotective effects in adriamycin induced nondiabetic kidney disease. It reduces urinary protein excretion, restores podocyte function, ameliorates renal pathological injury, and decreases the excretion of the urinary tubular injury biomarkers NGAL and Kim-1. Specifically, NEN uncouples isolated kidney mitochondria, and dose-dependently decreases the renal production and urinary excretion of H2O2. Moreover, NEN increases catalase and PGC-1α expression, which might accelerate H2O2 scavenging. The results of this study provide the first evidence that NEN protects kidney in nondiabetic kidney disease by regulating redox balance.
Insights
Niclosamide ethanolamine salt (NEN) offers kidney protection in non-diabetic kidney disease by reducing protein and hydrogen peroxide excretion. This mitochondrial uncoupler also improves renal pathology and biomarkers of tubular injury.
Area of Science:
- Nephrology
- Mitochondrial Biology
- Oxidative Stress Research
Background:
- Chronic kidney disease (CKD) involves proteinuria, glomerulosclerosis, and tubulointerstitial fibrosis.
- Mitochondrial dysfunction and reactive oxygen species (ROS) overproduction are key in CKD pathogenesis.
- Mitochondrial uncoupling regulates mitochondrial function and ROS production.
Purpose of the Study:
- To investigate the renoprotective effects of Niclosamide ethanolamine salt (NEN) in non-diabetic kidney disease.
- To determine NEN's impact on proteinuria, podocyte function, renal pathology, and tubular injury biomarkers.
- To elucidate the mechanisms underlying NEN's effects on mitochondrial function and redox balance.
Main Methods:
- Adriamycin-induced non-diabetic kidney disease model in mice.
- Assessment of urinary protein excretion and tubular injury biomarkers (NGAL, Kim-1).
- Evaluation of kidney mitochondrial function, hydrogen peroxide (H2O2) production and excretion, and expression of catalase and PGC-1α.
Main Results:
- NEN significantly reduced urinary protein excretion and ameliorated renal pathological injury.
- NEN restored podocyte function and decreased urinary excretion of NGAL and Kim-1.
- NEN uncoupled kidney mitochondria, dose-dependently decreased renal H2O2 production and excretion, and increased catalase and PGC-1α expression.
Conclusions:
- NEN demonstrates significant renoprotective effects in adriamycin-induced non-diabetic kidney disease.
- NEN protects the kidney by regulating redox balance, decreasing oxidative stress, and improving mitochondrial function.
- These findings highlight NEN as a potential therapeutic agent for non-diabetic kidney diseases.
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