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Chao SP, Cheng WL, Yi W, Cai HH, Deng K, Cao JL, Zeng Z, Wang H, Wu X. N-Acetylcysteine Alleviates Phenylephrine-Induced Cardiomyocyte Dysfunction via Engaging PI3K/AKT Signaling Pathway. Am J Hypertens 2024; 37:230-238. [PMID: 37864839 DOI: 10.1093/ajh/hpad100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 09/20/2023] [Accepted: 10/16/2023] [Indexed: 10/23/2023] Open
Abstract
BACKGROUND Increased reactive oxygen species (ROS) and oxidative stress response lead to cardiomyocyte hypertrophy and apoptosis, which play crucial roles in the pathogenesis of heart failure. The purpose of current research was to explore the role of antioxidant N-acetylcysteine (NAC) on cardiomyocyte dysfunction and the underlying molecular mechanisms. METHODS AND RESULTS Compared with control group without NAC treatment, NAC dramatically inhibited the cell size of primary cultured neonatal rat cardiomyocytes (NRCMs) tested by immunofluorescence staining and reduced the expression of representative markers associated with hypertrophic, fibrosis and apoptosis subjected to phenylephrine administration examined by reverse transcription-polymerase chain reaction (RT-PCR) and western blot. Moreover, enhanced ROS expression was attenuated, whereas activities of makers related to oxidative stress response examined by individual assay Kits, including total antioxidation capacity (T-AOC), glutathione peroxidase (GSH-Px), and primary antioxidant enzyme Superoxide dismutase (SOD) were induced by NAC treatment in NRCMs previously treated with phenylephrine. Mechanistically, we noticed that the protein expression levels of phosphorylated phosphatidylinositol 3-kinase (PI3K) and AKT were increased by NAC stimulation. More importantly, we identified that the negative regulation of NAC in cardiomyocyte dysfunction was contributed by PI3K/AKT signaling pathway through further utilization of PI3K/AKT inhibitor (LY294002) or agonist (SC79). CONCLUSIONS Collected, NAC could attenuate cardiomyocyte dysfunction subjected to phenylephrine, partially by regulating the ROS-induced PI3K/AKT-dependent signaling pathway.
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Affiliation(s)
- Sheng-Ping Chao
- Department of Cardiology, Zhongnan Hospital, Wuhan University, WuhanChina
- Institute of Myocardial Injury and Repair, Wuhan University, Wuhan, China
| | - Wen-Lin Cheng
- Department of Cardiology, Zhongnan Hospital, Wuhan University, WuhanChina
- Institute of Myocardial Injury and Repair, Wuhan University, Wuhan, China
| | - Wenjuan Yi
- Department of Dermatology, Zhongnan Hospital, Wuhan University, Wuhan, China
| | - Huan-Huan Cai
- Department of Cardiology, Zhongnan Hospital, Wuhan University, WuhanChina
- Institute of Myocardial Injury and Repair, Wuhan University, Wuhan, China
| | - Keqiong Deng
- Department of Cardiology, Zhongnan Hospital, Wuhan University, WuhanChina
- Institute of Myocardial Injury and Repair, Wuhan University, Wuhan, China
| | - Jian-Lei Cao
- Department of Cardiology, Zhongnan Hospital, Wuhan University, WuhanChina
- Institute of Myocardial Injury and Repair, Wuhan University, Wuhan, China
| | - Ziyue Zeng
- Department of Cardiology, Zhongnan Hospital, Wuhan University, WuhanChina
- Institute of Myocardial Injury and Repair, Wuhan University, Wuhan, China
| | - Hairong Wang
- Department of Cardiology, Zhongnan Hospital, Wuhan University, WuhanChina
- Institute of Myocardial Injury and Repair, Wuhan University, Wuhan, China
| | - Xiaoyan Wu
- Department of Cardiology, Zhongnan Hospital, Wuhan University, WuhanChina
- Institute of Myocardial Injury and Repair, Wuhan University, Wuhan, China
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