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Henry BV, Chen H, Edwards MA, Faber L, Freischlag JA. A New Look at an Old Problem: Improving Diversity, Equity, and Inclusion in Scientific Research. Am Surg 2021; 87:1722-1726. [PMID: 34253091 DOI: 10.1177/00031348211029853] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- Brandon V Henry
- Department of Surgery, 1374Morehouse School of Medicine, Atlanta, GA, USA
| | - Herbert Chen
- Department of Surgery, University of Alabama at Birmingham, Birmingham, AL, USA
| | | | - Lydia Faber
- Department of Surgery, 12279Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - Julie A Freischlag
- Department of Surgery, 12279Wake Forest School of Medicine, Winston-Salem, NC, USA
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Li Z, He Q, Wu C, Chen L, Bi F, Zhou Y, Shan H. Apelin shorten QT interval by inhibiting Kir2.1/I K1 via a PI3K way in acute myocardial infarction. Biochem Biophys Res Commun 2019; 517:272-277. [PMID: 31349969 DOI: 10.1016/j.bbrc.2019.07.041] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Accepted: 07/15/2019] [Indexed: 12/24/2022]
Abstract
QT interval prolongation and depolarization of resting membrane potential (RMP) were found in acute myocardial infarction (MI) which is involved in the arrhythmogenic mechanism and raising the risk to initiate torsade de pointes. However, clinical anti-arrhythmic agents that primarily act on QT interval and RMP are not currently available. Our objective was to determine whether Apelin, an endogenous peptide ligand of receptor APJ, affects QT interval and RMP and underlying mechanisms. To test this viewpoint, mice were subjected to MI by ligating the left main coronary artery and Apelin was applied through tail vein at 5 min prior coronary occlusion in tested group. Compared to MI group, pretreatment of Apelin (15 μg/kg) shortened QTc and QT interval induced by MI, significantly elevated RMP and shortened action potential duration (APD) by increased IK1 currents recorded using whole-cell patch technique from cardiomyocytes underwent MI. In cultured neonatal mouse cardiomyocytes, Apelin (1 μmol/L) restored hypoxia-induced Kir2.1 down-regulation, which was abolished by IP3K inhibitor LY-294002. Additionally, Apelin elicited a time-dependent increase in phosphorylation of Akt leading to increase in PI3-kinase activity. These results showed that Apelin enhanced IK1/Kir2.1 currents via IP3K pathway as by rescue ischemia- and hypoxia-induced RMP depolarization and prolongation of QT interval, which may prevent or cure acute ischemic-mediated arrhythmias. This study brings new information to anti-arrhythmic theories and provides a potential target for the clinical management of acute ischemia-related arrhythmias.
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Affiliation(s)
- Zhongrui Li
- Department of Pharmacology (the State-Province Key Laboratories of Biomedicine Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, 150081, China; Department of Ophthalmology, The First Affiliated Hospital of Harbin Medical University, Harbin Medical University, Harbin, 150081, China
| | - Qiufu He
- Department of General Practice, The Forth Affiliated Hospital of Harbin Medical University, Harbin Medical University, Harbin, 150081, China
| | - Chengyu Wu
- Department of Pharmacology (the State-Province Key Laboratories of Biomedicine Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, 150081, China
| | | | - Fangfang Bi
- Department of Pharmacology (the State-Province Key Laboratories of Biomedicine Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, 150081, China
| | - Yuhong Zhou
- Department of Pharmacology (the State-Province Key Laboratories of Biomedicine Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, 150081, China.
| | - Hongli Shan
- Department of Pharmacology (the State-Province Key Laboratories of Biomedicine Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, 150081, China.
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