Metformin alleviates cholestasis-associated nephropathy through regulating oxidative stress and mitochondrial function
| Autor: | Omid Farshad, Negar Azarpira, Hamidreza Mohammadi, Hossein Niknahad, Reyhaneh Dehghani, Asma Najibi, Sedigheh Kamran, Khadijeh Mousavi, Reza Heidari, Mohammad Mehdi Ommati |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
0301 basic medicine
RC799-869 Pharmacology medicine.disease_cause Nephropathy Lipid peroxidation 03 medical and health sciences chemistry.chemical_compound 0302 clinical medicine Fibrosis Medicine chemistry.chemical_classification Reactive oxygen species Kidney Cholestasis Hepatology business.industry Gastroenterology Glutathione Diseases of the digestive system. Gastroenterology medicine.disease Metformin Bile acids 030104 developmental biology medicine.anatomical_structure chemistry Cirrhosis Oxidative stress 030211 gastroenterology & hepatology Mitochondrial function business medicine.drug |
| Zdroj: | Liver Research, Vol 5, Iss 3, Pp 171-180 (2021) |
| ISSN: | 2542-5684 |
| Popis: | Background and aim Cholestasis-associated renal injury or cholemic nephropathy (CN) is a serious clinical problem. Previous studies mentioned that oxidative stress and mitochondrial impairment play a role in CN. There is no specific pharmacological intervention for CN. Metformin is an anti-diabetic drug administered for decades. On the other hand, novel pharmacological properties have emerged for this drug. The effect of metformin on oxidative stress parameters has been well-recognized in different experimental models. It has also been found that metformin positively affected mitochondrial function. The current study aimed to evaluate the effects of metformin in an animal model of CN. Methods Rats underwent bile duct ligation (BDL) and were treated with metformin (250 and 500 mg/kg) for 14 consecutive days. Two weeks after the BDL operations, urine, serum, and kidney samples were collected and analyzed. Results Markers of oxidative stress, including reactive oxygen species (ROS) formation, lipid peroxidation, protein carbonylation, depleted antioxidant capacity, and decreased glutathione (GSH) levels were detected in BDL animals. Moreover, mitochondrial indices, including adenosine triphosphate (ATP) level, dehydrogenase activity, mitochondrial membrane potential, and mitochondrial permeability, were impaired in the kidney of cholestatic rats. Renal histopathological alterations in cholestatic animals included tubular degeneration and interstitial inflammation, cast formation, and fibrosis. It was found that metformin significantly alleviated oxidative stress and improved mitochondrial indices in the kidney of cholestatic rats. Tissue histopathological alterations were also mitigated in metformin-treated groups. Conclusions Metformin could be a candidate for managing CN. The nephroprotective role of metformin is primarily associated with its effects on oxidative stress parameters and mitochondrial function. |
| Databáze: | OpenAIRE |
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