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Ma P, Zhao M, Li Y, Zhang G, Ma Y, Shi Y, Su P, Chen R, Tang ZG, Zhang Y, Liu B, Zhang Q, Liu X, Li F. The protective effects of uric acid against myocardial ischemia via the Nrf2 pathway. Eur J Pharmacol 2023; 959:176062. [PMID: 37793494 DOI: 10.1016/j.ejphar.2023.176062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Revised: 09/03/2023] [Accepted: 09/18/2023] [Indexed: 10/06/2023]
Abstract
Uric acid (UA) possesses both pro- and anti-oxidative properties in ischemic heart disease, but the underlying mechanism remains unclear. We aimed to investigate UA's protective effect on myocardial ischemia by examining its effects on ECG Ischemic Alterations (EIA) and H2O2-induced oxidative stress in H9C2 myocardial cells. The incidence of EIA decreased over time and was more prevalent among women than men. A U-shaped relationship was observed between UA levels and EIA incidence, with the third quartile exhibiting a protective association. Addition of 237.9 μmol/L UA improved cellular damage and oxidative stress in H2O2-treated H9C2 cells, as determined by cell viability, LDH release, ROS levels, and total antioxidant capacity assays. UA activated the Nrf2 pathway, evidenced by increased expression of Nrf2, GCLC, and HO-1 proteins. By reversing cell cycle blockage, promoting wound healing ability, improving colony-forming capacity, and increasing angiogenesis in H2O2-treated cells, UA exhibited positive effects on cardiomyocyte growth characteristics. Additionally, use of Nrf2 inhibitor ML385 confirmed the involvement of the Nrf2 pathway by negating UA's effects on oxidatively damaged cardiomyocytes. Our findings suggest that UA induces downstream antioxidant factors to ameliorate oxidative stress by activating the Nrf2 pathway, which could be one of the targets responsible for UA's beneficial effects in myocardial ischemia.
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Affiliation(s)
- Pengqiang Ma
- Department of Preventive Medicine, School of Public Health, Hubei University of Medicine, Shiyan, China; Hubei Biomedical Detection Sharing Platform in Water Source Area of South to North Water Diversion Project, Hubei University of Medicine, Shiyan, China
| | - Menghui Zhao
- Department of Preventive Medicine, School of Public Health, Hubei University of Medicine, Shiyan, China; Hubei Biomedical Detection Sharing Platform in Water Source Area of South to North Water Diversion Project, Hubei University of Medicine, Shiyan, China
| | - Yue Li
- Department of Preventive Medicine, School of Public Health, Hubei University of Medicine, Shiyan, China; Hubei Biomedical Detection Sharing Platform in Water Source Area of South to North Water Diversion Project, Hubei University of Medicine, Shiyan, China
| | - Guanqian Zhang
- Department of Preventive Medicine, School of Public Health, Hubei University of Medicine, Shiyan, China; Hubei Biomedical Detection Sharing Platform in Water Source Area of South to North Water Diversion Project, Hubei University of Medicine, Shiyan, China
| | - Yuxia Ma
- Department of Preventive Medicine, School of Public Health, Hubei University of Medicine, Shiyan, China; Hubei Biomedical Detection Sharing Platform in Water Source Area of South to North Water Diversion Project, Hubei University of Medicine, Shiyan, China
| | - Youlan Shi
- Department of Preventive Medicine, School of Public Health, Hubei University of Medicine, Shiyan, China; Hubei Biomedical Detection Sharing Platform in Water Source Area of South to North Water Diversion Project, Hubei University of Medicine, Shiyan, China
| | - Peihui Su
- Department of Preventive Medicine, School of Public Health, Hubei University of Medicine, Shiyan, China; Hubei Biomedical Detection Sharing Platform in Water Source Area of South to North Water Diversion Project, Hubei University of Medicine, Shiyan, China
| | - Rongxia Chen
- Department of Preventive Medicine, School of Public Health, Hubei University of Medicine, Shiyan, China; Hubei Biomedical Detection Sharing Platform in Water Source Area of South to North Water Diversion Project, Hubei University of Medicine, Shiyan, China; Department of Drug Quality Inspection, School of Pharmaceutical Sciences, Hubei University of Medicine, Shiyan, China
| | - Zhen-Gang Tang
- Health Management Center, Shiyan Renmin Hospital, Hubei University of Medicine, Shiyan, China
| | - Yan Zhang
- Health Management Center, Shiyan Renmin Hospital, Hubei University of Medicine, Shiyan, China
| | - Bing Liu
- Department of Preventive Medicine, School of Public Health, Hubei University of Medicine, Shiyan, China
| | - Qiong Zhang
- Department of Preventive Medicine, School of Public Health, Hubei University of Medicine, Shiyan, China; Hubei Biomedical Detection Sharing Platform in Water Source Area of South to North Water Diversion Project, Hubei University of Medicine, Shiyan, China; Hubei Key Laboratory of Wudang Local Chinese Medicine Research, Hubei University of Medicine, Shiyan, China; Department of Drug Quality Inspection, School of Pharmaceutical Sciences, Hubei University of Medicine, Shiyan, China.
| | - Xiang Liu
- Health Management Center, Shiyan Renmin Hospital, Hubei University of Medicine, Shiyan, China.
| | - Feifeng Li
- Department of Preventive Medicine, School of Public Health, Hubei University of Medicine, Shiyan, China; Hubei Biomedical Detection Sharing Platform in Water Source Area of South to North Water Diversion Project, Hubei University of Medicine, Shiyan, China; Hubei Key Laboratory of Wudang Local Chinese Medicine Research, Hubei University of Medicine, Shiyan, China; Department of Drug Quality Inspection, School of Pharmaceutical Sciences, Hubei University of Medicine, Shiyan, China; Health Management Center, Shiyan Renmin Hospital, Hubei University of Medicine, Shiyan, China.
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Carmona-Puerta R, Lorenzo-Martínez E. Nonspecific ventricular repolarization abnormalities: A wolf in sheep's clothing. Rev Clin Esp 2022; 222:S2254-8874(22)00054-6. [PMID: 35842412 DOI: 10.1016/j.rceng.2022.03.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Accepted: 03/16/2022] [Indexed: 10/17/2022]
Abstract
The term nonspecific ventricular repolarization abnormalities refers to a set of minor alterations of the ST segment and/or the T wave. For a long time, they have been of little clinical interest as they do not translate into specific diagnoses. It has even been asserted that they constitute benign electrocardiographic findings. Their presence has been reported in various cardiovascular and non-cardiovascular diseases. However, it is frequently identified in apparently healthy asymptomatic people. A growing number of studies demonstrate their importance as predictors of cardiovascular morbidity and mortality, expanding their spectrum towards cardiovascular prevention. In light of the body of scientific evidence, it is imperative that the traditional view of nonspecific ventricular repolarization abnormalities changes.
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Affiliation(s)
- R Carmona-Puerta
- Servicio de Electrofisiología y Arritmología, Hospital Universitario Cardiocentro Ernesto Guevara, Santa Clara, Cuba.
| | - E Lorenzo-Martínez
- Departamento de Fisiología, Universidad de Ciencias Médicas de Villa Clara, Santa Clara, Cuba
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