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Phenylsulfate-induced oxidative stress and mitochondrial dysfunction in podocytes are ameliorated by Astragaloside IV activation of the SIRT1/PGC1α /Nrf1 signaling pathway.
Li, Liu; Zou, Junju; Zhou, Min; Li, Hong; Zhou, Tongyi; Liu, Xiu; Huang, Qiuqing; Yang, Shiyao; Xiang, Qin; Yu, Rong.
Affiliation
  • Li L; School of Traditional Chinese Medicine, Hunan University of Chinese Medicine, Changsha, Hunan 410208, China; Hunan Key Laboratory of Traditional Chinese Medicine Prescription and Syndromes Translational Medicine, Hunan University of Chinese Medicine, Changsha, Hunan 410208, China.
  • Zou J; School of Traditional Chinese Medicine, Hunan University of Chinese Medicine, Changsha, Hunan 410208, China; Hunan Key Laboratory of Traditional Chinese Medicine Prescription and Syndromes Translational Medicine, Hunan University of Chinese Medicine, Changsha, Hunan 410208, China.
  • Zhou M; School of Traditional Chinese Medicine, Hunan University of Chinese Medicine, Changsha, Hunan 410208, China; Hunan Key Laboratory of Traditional Chinese Medicine Prescription and Syndromes Translational Medicine, Hunan University of Chinese Medicine, Changsha, Hunan 410208, China.
  • Li H; School of Traditional Chinese Medicine, Hunan University of Chinese Medicine, Changsha, Hunan 410208, China; Hunan Key Laboratory of Traditional Chinese Medicine Prescription and Syndromes Translational Medicine, Hunan University of Chinese Medicine, Changsha, Hunan 410208, China.
  • Zhou T; School of Traditional Chinese Medicine, Hunan University of Chinese Medicine, Changsha, Hunan 410208, China; Hunan Key Laboratory of Traditional Chinese Medicine Prescription and Syndromes Translational Medicine, Hunan University of Chinese Medicine, Changsha, Hunan 410208, China.
  • Liu X; School of Traditional Chinese Medicine, Hunan University of Chinese Medicine, Changsha, Hunan 410208, China; Hunan Key Laboratory of Traditional Chinese Medicine Prescription and Syndromes Translational Medicine, Hunan University of Chinese Medicine, Changsha, Hunan 410208, China.
  • Huang Q; School of Traditional Chinese Medicine, Hunan University of Chinese Medicine, Changsha, Hunan 410208, China; Hunan Key Laboratory of Traditional Chinese Medicine Prescription and Syndromes Translational Medicine, Hunan University of Chinese Medicine, Changsha, Hunan 410208, China.
  • Yang S; School of Traditional Chinese Medicine, Hunan University of Chinese Medicine, Changsha, Hunan 410208, China; Hunan Key Laboratory of Traditional Chinese Medicine Prescription and Syndromes Translational Medicine, Hunan University of Chinese Medicine, Changsha, Hunan 410208, China.
  • Xiang Q; School of Traditional Chinese Medicine, Hunan University of Chinese Medicine, Changsha, Hunan 410208, China; Hunan Key Laboratory of Traditional Chinese Medicine Prescription and Syndromes Translational Medicine, Hunan University of Chinese Medicine, Changsha, Hunan 410208, China.
  • Yu R; School of Traditional Chinese Medicine, Hunan University of Chinese Medicine, Changsha, Hunan 410208, China; Hunan Key Laboratory of Traditional Chinese Medicine Prescription and Syndromes Translational Medicine, Hunan University of Chinese Medicine, Changsha, Hunan 410208, China. Electronic address
Biomed Pharmacother ; 177: 117008, 2024 Aug.
Article in En | MEDLINE | ID: mdl-38901196
ABSTRACT
Astragaloside IV (AS-IV) exhibits diverse biological activities. Despite this, the detailed molecular mechanisms by which AS-IV ameliorates diabetic nephropathy (DN) and shields podocytes from oxidative stress (OS) and mitochondrial dysfunction remain poorly understood. In this study, we used biochemical assays, histopathological analysis, Doppler ultrasound, transmission electron microscopy,flow cytometry, fluorescence staining, and Western blotting and other methods. AS-IV was administered to db/db mice for in vivo experimentation. Our findings indicated that AS-IV treatment significantly reduced diabetes-associated markers, proteinuria, and kidney damage. It also diminished ROS levels in the kidney, enhanced the expression of endogenous antioxidant enzymes, and improved mitochondrial health. Phenyl sulfate (PS), a protein-bound uremic solute of enteric origin, has been closely linked with DN and represents a promising avenue for further research. In vitro, PS exposure induced OS and mitochondrial dysfunction in podocytes, increasing ROS levels while decreasing antioxidant enzyme activity (Catalase, Heme Oxygenase-1, Superoxide Dismutase, and Glutathione Peroxidase). ROS inhibitors (N-acetyl-L-cysteine, NAC) as the positive control group can significantly reduce the levels of ROS and restore antioxidant enzymes protein levels. Additionally, PS reduced markers associated with mitochondrial biosynthesis and function (SIRT1, PGC1α, Nrf1, and TFAM). These adverse effects were partially reversed by AS-IV treatment. However, co-treatment with AS-IV and the SIRT1 inhibitor EX527 failed to restore these indicators. Overall, our study demonstrates that AS-IV effectively attenuates DN and mitigates PS-induced OS and mitochondrial dysfunction in podocytes via the SIRT1/PGC1α/Nrf1 pathway.
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Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Saponins / Triterpenes / Signal Transduction / Oxidative Stress / Podocytes / Sirtuin 1 / Peroxisome Proliferator-Activated Receptor Gamma Coactivator 1-alpha / Mitochondria Limits: Animals Language: En Journal: Biomed Pharmacother Year: 2024 Document type: Article

Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Saponins / Triterpenes / Signal Transduction / Oxidative Stress / Podocytes / Sirtuin 1 / Peroxisome Proliferator-Activated Receptor Gamma Coactivator 1-alpha / Mitochondria Limits: Animals Language: En Journal: Biomed Pharmacother Year: 2024 Document type: Article