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Zhang Y, Chen H, Ma Q, Jia H, Ma H, Du Z, Liu Y, Zhang X, Zhang Y, Guan Y, Ma H. Electrophysiological Mechanism of Catestatin Antiarrhythmia: Enhancement of Ito, IK, and IK1 and Inhibition of ICa-L in Rat Ventricular Myocytes. J Am Heart Assoc 2024; 13:e035415. [PMID: 39158577 DOI: 10.1161/jaha.124.035415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/23/2024] [Accepted: 07/09/2024] [Indexed: 08/20/2024]
Abstract
BACKGROUND Cardiovascular disease remains one of the leading causes of death globally. Myocardial ischemia and infarction, in particular, frequently cause disturbances in cardiac electrical activity that can trigger ventricular arrhythmias. We aimed to investigate whether catestatin, an endogenous catecholamine-inhibiting peptide, ameliorates myocardial ischemia-induced ventricular arrhythmias in rats and the underlying ionic mechanisms. METHODS AND RESULTS Adult male Sprague-Dawley rats were randomly divided into control and catestatin groups. Ventricular arrhythmias were induced by ligation of the left anterior descending coronary artery and electrical stimulation. Action potential, transient outward potassium current, delayed rectifier potassium current, inward rectifying potassium current, and L-type calcium current (ICa-L) of rat ventricular myocytes were recorded using a patch-clamp technique. Catestatin notably reduced ventricular arrhythmia caused by myocardial ischemia/reperfusion and electrical stimulation of rats. In ventricular myocytes, catestatin markedly shortened the action potential duration of ventricular myocytes, which was counteracted by potassium channel antagonists TEACl and 4-AP, and ICa-L current channel agonist Bay K8644. In addition, catestatin significantly increased transient outward potassium current, delayed rectifier potassium current, and inward rectifying potassium current density in a concentration-dependent manner. Catestatin accelerated the activation and decelerated the inactivation of the transient outward potassium current channel. Furthermore, catestatin decreased ICa-L current density in a concentration-dependent manner. Catestatin also accelerated the inactivation of the ICa-L channel and slowed down the recovery of ICa-L from inactivation. CONCLUSIONS Catestatin enhances the activity of transient outward potassium current, delayed rectifier potassium current, and inward rectifying potassium current, while suppressing the ICa-L in ventricular myocytes, leading to shortened action potential duration and ultimately reducing the ventricular arrhythmia in rats.
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MESH Headings
- Animals
- Male
- Myocytes, Cardiac/drug effects
- Myocytes, Cardiac/metabolism
- Rats, Sprague-Dawley
- Chromogranin A/pharmacology
- Chromogranin A/metabolism
- Action Potentials/drug effects
- Peptide Fragments/pharmacology
- Calcium Channels, L-Type/metabolism
- Calcium Channels, L-Type/drug effects
- Arrhythmias, Cardiac/physiopathology
- Arrhythmias, Cardiac/prevention & control
- Arrhythmias, Cardiac/metabolism
- Anti-Arrhythmia Agents/pharmacology
- Heart Ventricles/drug effects
- Heart Ventricles/metabolism
- Heart Ventricles/physiopathology
- Potassium Channels, Inwardly Rectifying/metabolism
- Potassium Channels, Inwardly Rectifying/drug effects
- Disease Models, Animal
- Potassium Channel Blockers/pharmacology
- Rats
- Patch-Clamp Techniques
- Delayed Rectifier Potassium Channels/metabolism
- Delayed Rectifier Potassium Channels/drug effects
- Potassium Channels/metabolism
- Potassium Channels/drug effects
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Affiliation(s)
- Ying Zhang
- Department of Physiology Hebei Medical University Shijiazhuang Hebei China
| | - Hua Chen
- Department of Cardiovascular Care Unit Hebei General Hospital Shijiazhuang Hebei China
| | - Qingmin Ma
- Department of Ophthalmology Hebei General Hospital Shijiazhuang Hebei China
| | - Hui Jia
- Department of Physiology Hebei Medical University Shijiazhuang Hebei China
| | - Hongyu Ma
- Department of Physiology Hebei Medical University Shijiazhuang Hebei China
| | - Zishuo Du
- Department of Physiology Hebei Medical University Shijiazhuang Hebei China
| | - Yan Liu
- Department of Endocrinology The Third Hospital of Hebei Medical University Shijiazhuang Hebei China
| | - Xiangjian Zhang
- Hebei Collaborative Innovation Center for Cardio-Cerebrovascular Disease Shijiazhuang Hebei China
| | - Yi Zhang
- Department of Physiology Hebei Medical University Shijiazhuang Hebei China
- Hebei Collaborative Innovation Center for Cardio-Cerebrovascular Disease Shijiazhuang Hebei China
| | - Yue Guan
- Department of Physiology Hebei Medical University Shijiazhuang Hebei China
- Hebei Collaborative Innovation Center for Cardio-Cerebrovascular Disease Shijiazhuang Hebei China
| | - Huijie Ma
- Department of Physiology Hebei Medical University Shijiazhuang Hebei China
- The Key Laboratory of Neural and Vascular Biology, Ministry of Education Hebei Medical University Shijiazhuang Hebei China
- Key Laboratory of Neurophysiology of Hebei Province Shijiazhuang Hebei China
- Hebei Collaborative Innovation Center for Cardio-Cerebrovascular Disease Shijiazhuang Hebei China
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Guo X, Ma H, Cui Z, Zhao Q, Zhang Y, Jia L, Zhang L, Guo H, Zhang X, Zhang Y, Guan Y, Ma H. Chronic Intermittent Hypobaric Hypoxia Reduces Hypothalamic N-Methyl-d-Aspartate Receptor Activity and Sympathetic Outflow in Spontaneously Hypertensive Rats. High Alt Med Biol 2024; 25:77-88. [PMID: 38241485 DOI: 10.1089/ham.2023.0098] [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] [Indexed: 01/21/2024] Open
Abstract
Guo, Xinqi, Hongyu Ma, Ziye Cui, Qiyue Zhao, Ying Zhang, Lu Jia, Liping Zhang, Hui Guo, Xiangjian Zhang, Yi Zhang, Yue Guan, and Huijie Ma. Chronic intermittent hypobaric hypoxia reduces hypothalamic N-Methyl-d-Aspartate Receptor activity and sympathetic outflow in spontaneously hypertensive rats. High Alt Med Biol. 25:77-88, 2024. Objective: This study aims to determine the role of hypothalamic renin-angiotensin system (RAS) in the antihypertensive effect of chronic intermittent hypobaric hypoxia (CIHH). Methods: Wistar-Kyoto (WKY) rats and spontaneously hypertensive rats (SHRs) received 35 days of hypobaric hypoxia simulating an altitude of 4,000 m, 5 h/day. The levels of RAS, blood pressure, and N-methyl-d-aspartate receptor (NMDAR) activities of hypothalamic paraventricular nucleus (PVN) presympathetic neurons from each group of rats were determined. Results: The systolic blood pressure, diastolic blood pressure, and mean arterial blood pressure (MAP) of SHRs significantly decreased from the third week of CIHH treatment. This blood pressure reduction effect could be maintained for at least 2 weeks after stopping the CIHH treatment. CIHH treatment also attenuated the decrease in MAP and renal sympathetic nerve activity induced by hexamethonium administration in SHRs, but not in WKY rats. Furthermore, CIHH reversed the increase in serum angiotensin (Ang)II concentration and the expression of PVN angiotensin-converting enzyme (ACE) and AngII type 1 (AT1) receptors, as well as the decrease in serum Ang1-7 concentration and the expression of PVN ACE2 and Mas receptors in SHRs. In addition, the administration of CIHH resulted in a reduction in the frequency of miniature excitatory postsynaptic currents and amplitude of NMDAR current in PVN presympathetic neurons of SHRs, which means that CIHH decreased the pre- and postsynaptic NMDAR activity of PVN presympathetic neurons in SHRs. However, pretreatment with A779 (a Mas receptor blocker) or AngII abrogated the above effects. Meanwhile, Ang1-7 pretreatment mimicked the CIHH effect on pre- and postsynaptic NMDAR activity of presympathetic neurons in SHRs. Conclusions: Our data indicate that CIHH reduces pre- and postsynaptic NMDAR activity of PVN presympathetic neurons, sympathetic outflow, and blood pressure by decreasing the activity of the ACE/AngII/AT1 axis and increasing the activity of ACE2/Ang1-7/Mas axis in the hypothalamus in hypertension.
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Affiliation(s)
- Xinqi Guo
- Department of Physiology, Hebei Medical University, Shijiazhuang, China
| | - Hongyu Ma
- Department of Physiology, Hebei Medical University, Shijiazhuang, China
| | - Ziye Cui
- Department of Physiology, Hebei Medical University, Shijiazhuang, China
| | - Qiyue Zhao
- Department of Physiology, Hebei Medical University, Shijiazhuang, China
| | - Ying Zhang
- Department of Physiology, Hebei Medical University, Shijiazhuang, China
| | - Lu Jia
- Department of Physiology, Hebei Medical University, Shijiazhuang, China
| | - Liping Zhang
- Department of Physiology, Hebei Medical University, Shijiazhuang, China
| | - Hui Guo
- Department of Gynaecology and Obstetrics, Fourth Hospital of Hebei Medical University, Shijiazhuang, China
| | - Xiangjian Zhang
- Hebei Collaborative Innovation Center for Cardio-Cerebrovascular Disease, Shijiazhuang, China
| | - Yi Zhang
- Department of Physiology, Hebei Medical University, Shijiazhuang, China
- Hebei Collaborative Innovation Center for Cardio-Cerebrovascular Disease, Shijiazhuang, China
| | - Yue Guan
- Department of Physiology, Hebei Medical University, Shijiazhuang, China
| | - Huijie Ma
- Department of Physiology, Hebei Medical University, Shijiazhuang, China
- Hebei Collaborative Innovation Center for Cardio-Cerebrovascular Disease, Shijiazhuang, China
- The Key Laboratory of Neural and Vascular Biology, Ministry of Education, Hebei Medical University, Shijiazhuang, China
- Key Laboratory of Neurophysiology of Hebei Province, Shijiazhuang, China
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Wang H, Liu Z, Yang Q, Wang Y, Chen Y, Bao Y, Zhu H. Quinazoline-Assisted Acylation with Aldehydes through Pd(II)-Catalyzed C(sp2)–H Activation. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.154320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Honglin D, Xiaojie S, Lingling C, Hao W, Chao G, Zhengjie W, Limin L, Jiajie M, Fuqiang Y, Hongmin L, Yu K, Qiurong Z. Synthesis and Antitumor Activity Evaluation of 2,4,6-Trisubstituted Quinazoline Derivatives Containing Thiazole Structure. CHINESE J ORG CHEM 2022. [DOI: 10.6023/cjoc202205028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Tsvetkova AS, Bernikova OG, Mikhaleva NJ, Khramova DS, Ovechkin AO, Demidova MM, Platonov PG, Azarov JE. Melatonin Prevents Early but Not Delayed Ventricular Fibrillation in the Experimental Porcine Model of Acute Ischemia. Int J Mol Sci 2020; 22:ijms22010328. [PMID: 33396934 PMCID: PMC7795598 DOI: 10.3390/ijms22010328] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Revised: 12/16/2020] [Accepted: 12/26/2020] [Indexed: 01/09/2023] Open
Abstract
Antiarrhythmic effects of melatonin have been demonstrated ex vivo and in rodent models, but its action in a clinically relevant large mammalian model remains largely unknown. Objectives of the present study were to evaluate electrophysiological and antiarrhythmic effects of melatonin in a porcine model of acute myocardial infarction. Myocardial ischemia was induced by 40-min coronary occlusion in 25 anesthetized pigs. After ischemia onset, 12 animals received melatonin (4 mg/kg). 48 intramyocardial electrograms were recorded from left ventricular wall and interventricular septum (IVS). In each lead, activation time (AT) and repolarization time (RT) were determined. During ischemia, ATs and dispersion of repolarization (DOR = RTmax − RTmin) increased reaching maximal values by 3–5 and 20–25 min, respectively. Ventricular fibrillation (VF) incidence demonstrated no relations to redox state markers and was associated with increased DOR and delayed ATs (specifically, in an IVS base, an area adjacent to the ischemic zone) (p = 0.031). Melatonin prevented AT increase in the IVS base, (p < 0.001) precluding development of early VF (1–5 min, p = 0.016). VF occurrence in the delayed phase (17–40 min) where DOR was maximal was not modified by melatonin. Thus, melatonin-related enhancement of activation prevented development of early VF in the myocardial infarction model.
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Affiliation(s)
- Alena S. Tsvetkova
- Department of Cardiac Physiology, Institute of Physiology, Komi Science Center, Ural Branch, Russian Academy of Sciences, 167000 Syktyvkar, Russia; (O.G.B.); (N.J.M.); (A.O.O.); (J.E.A.)
- Correspondence: ; Tel.: +7-908-3280-936
| | - Olesya G. Bernikova
- Department of Cardiac Physiology, Institute of Physiology, Komi Science Center, Ural Branch, Russian Academy of Sciences, 167000 Syktyvkar, Russia; (O.G.B.); (N.J.M.); (A.O.O.); (J.E.A.)
| | - Natalya J. Mikhaleva
- Department of Cardiac Physiology, Institute of Physiology, Komi Science Center, Ural Branch, Russian Academy of Sciences, 167000 Syktyvkar, Russia; (O.G.B.); (N.J.M.); (A.O.O.); (J.E.A.)
| | - Darya S. Khramova
- Department of Molecular Immunology and Biotechnology, Institute of Physiology, Komi Science Center, Ural Branch, Russian Academy of Sciences, 167000 Syktyvkar, Russia;
| | - Alexey O. Ovechkin
- Department of Cardiac Physiology, Institute of Physiology, Komi Science Center, Ural Branch, Russian Academy of Sciences, 167000 Syktyvkar, Russia; (O.G.B.); (N.J.M.); (A.O.O.); (J.E.A.)
- Department of Therapy, Institute of Medicine, Pitirim Sorokin Syktyvkar State University, 55 Starovskiist., 167001 Syktyvkar, Russia
| | - Marina M. Demidova
- Department of Cardiology, Clinical Sciences, Lund University, 22185 Lund, Sweden; (M.M.D.); (P.G.P.)
- V.A. Almazov National Medical Research Center, 197341 Saint Petersburg, Russia
| | - Pyotr G. Platonov
- Department of Cardiology, Clinical Sciences, Lund University, 22185 Lund, Sweden; (M.M.D.); (P.G.P.)
- Arrhythmia Clinic, Skåne University Hospital, 22185 Lund, Sweden
| | - Jan E. Azarov
- Department of Cardiac Physiology, Institute of Physiology, Komi Science Center, Ural Branch, Russian Academy of Sciences, 167000 Syktyvkar, Russia; (O.G.B.); (N.J.M.); (A.O.O.); (J.E.A.)
- Department of Cardiology, Clinical Sciences, Lund University, 22185 Lund, Sweden; (M.M.D.); (P.G.P.)
- Department of Biochemistry and Physiology, Institute of Medicine, Pitirim Sorokin Syktyvkar State University, 55 Starovskiist., 167001 Syktyvkar, Russia
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