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N-acetylcysteine protects septic acute kidney injury by inhibiting SIRT3-mediated mitochondrial dysfunction and apoptosis
- Source :
- Iranian Journal of Basic Medical Sciences, Vol 27, Iss 7, Pp 850-856 (2024)
- Publication Year :
- 2024
- Publisher :
- Mashhad University of Medical Sciences, 2024.
-
Abstract
- Objective(s): To investigate the protective effect of N-acetylcysteine (NAC) on septic acute kidney injury (SAKI) via regulating Sirtuin3 (SIRT3)-mediated mitochondrial dysfunction and apoptosis.Materials and Methods: By constructing SIRT3 knockout mice and culturing kidney tubular epithelial cells (KTECs), we assessed the changes of renal function and detected the protein expression of adenine nucleotide translocator (ANT), cyclophilin (CypD) and voltage-dependent anion channel (VDAC) using western-blotting, and simultaneously detected toll-like receptor 4 (TLR4), inhibitor of kappa B kinase (IKKβ), inhibitor of Kappa Bα (IκBα), and p65 protein expression. We observed mitochondrial damage of KTECs using a transmission electron microscope and assessed apoptosis by TdT-mediated dUTP Nick-End Labeling and flow cytometry. Results: SIRT3 deficiency led to the deterioration of renal function, and caused a significant increase in inducible nitric oxide synthase production, a decrease in mitochondrial volume, up-regulation of TLR4, IκBα, IKKβ, and p65 proteins, and up-regulation of ANT, CypD and VDAC proteins. However, NAC significantly improved renal function and down-regulated the expression of TLR4, IκBα, IKKβ, and p65 proteins. Furthermore, SIRT3 deficiency led to a significant increase in KTEC apoptosis, while NAC up-regulated the expression of SIRT3 and inhibited apoptosis.Conclusion: NAC has a significant protective effect on SAKI by inhibiting SIRT3-mediated mitochondrial dysfunction and apoptosis of KTECs.
Details
- Language :
- English
- ISSN :
- 20083866 and 20083874
- Volume :
- 27
- Issue :
- 7
- Database :
- Directory of Open Access Journals
- Journal :
- Iranian Journal of Basic Medical Sciences
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.7c2b177e84bf4ce89796f9822404afc6
- Document Type :
- article
- Full Text :
- https://doi.org/10.22038/ijbms.2024.72882.15853