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Chen ZL, Lin J, Li Q, Zhang X, Song Y, Li H, Huang WH, Xu J. Microelectrochemical Sensor Reveals Tunneling Nanotube-Mediated Intercellular Communication of Endothelial Mechanotransduction. Anal Chem 2024; 96:9659-9665. [PMID: 38798234 DOI: 10.1021/acs.analchem.4c01542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/29/2024]
Abstract
The intercellular communication of mechanotransduction has a significant impact on various cellular processes. Tunneling nanotubes (TNTs) have been documented to possess the capability of transmitting mechanical stimulation between cells, thereby triggering an influx of Ca2+ ions. However, the related kinetic information on the TNT-mediated intercellular mechanotransduction communication is still poorly explored. Herein, we developed a classic and sensitive Pt-functionalized carbon fiber microelectrochemical sensor (Pt/CF) to study the intercellular communication of endothelial mechanotransduction through TNTs. The experimental findings demonstrate that the transmission of mechanical stimulation from stimulated human umbilical vein endothelial cells (HUVECs) to recipient HUVECs connected by TNTs occurred quickly (<100 ms) and effectively promoted nitric oxide (NO) production in the recipient HUVECs. The kinetic profile of NO release exhibited remarkable similarity in stimulated and recipient HUVECs. But the production of NO in the recipient cell is significantly attenuated (16.3%) compared to that in the stimulated cell, indicating a transfer efficiency of approximately 16.3% for TNTs. This study unveils insights into the TNT-mediated intercellular communication of mechanotransduction.
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Affiliation(s)
- Zhi-Liang Chen
- School of Pharmacy, Shaoyang University, Shaoyang 422000, P. R China
| | - Jiamei Lin
- Jiangxi Key Laboratory for Mass Spectrometry and Instrumentation, East China University of Technology, Nanchang 330013, P. R. China
| | - Qianming Li
- Jiangxi Administration of Traditional Chinese Medicine, Jiangxi University of Chinese Medicine, Nanchang 330006, P. R. China
| | - Xinglei Zhang
- Jiangxi Key Laboratory for Mass Spectrometry and Instrumentation, East China University of Technology, Nanchang 330013, P. R. China
| | - Yonggui Song
- Jiangxi Administration of Traditional Chinese Medicine, Jiangxi University of Chinese Medicine, Nanchang 330006, P. R. China
| | - Hui Li
- Jiangxi Key Laboratory for Mass Spectrometry and Instrumentation, East China University of Technology, Nanchang 330013, P. R. China
| | - Wei-Hua Huang
- Sauvage Center for Molecular Sciences, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
| | - Jiaquan Xu
- Jiangxi Key Laboratory for Mass Spectrometry and Instrumentation, East China University of Technology, Nanchang 330013, P. R. China
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2
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Zhou Q, Hao G, Xie W, Chen B, Lu W, Wang G, Zhong R, Chen J, Ye J, Shen J, Cao P. Exenatide reduces atrial fibrillation susceptibility by inhibiting hKv1.5 and hNav1.5 channels. J Biol Chem 2024; 300:107294. [PMID: 38636665 PMCID: PMC11109313 DOI: 10.1016/j.jbc.2024.107294] [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: 06/15/2023] [Revised: 04/02/2024] [Accepted: 04/12/2024] [Indexed: 04/20/2024] Open
Abstract
Exenatide, a promising cardioprotective agent, protects against cardiac structural remodeling and diastolic dysfunction. Combined blockade of sodium and potassium channels is valuable for managing atrial fibrillation (AF). Here, we explored whether exenatide displayed anti-AF effects by inhibiting human Kv1.5 and Nav1.5 channels. We used the whole-cell patch-clamp technique to investigate the effects of exenatide on hKv1.5 and hNav1.5 channels expressed in human embryonic kidney 293 cells and studied the effects of exenatide on action potential (AP) and other cardiac ionic currents in rat atrial myocytes. Additionally, an electrical mapping system was used to explore the effects of exenatide on electrical properties and AF activity in isolated rat hearts. Finally, a rat AF model, established using acetylcholine and calcium chloride, was employed to evaluate the anti-AF potential of exenatide in rats. Exenatide reversibly suppressed IKv1.5 with IC50 of 3.08 μM, preferentially blocked the hKv1.5 channel in its closed state, and positively shifted the voltage-dependent activation curve. Exenatide also reversibly inhibited INav1.5 with IC50 of 3.30 μM, negatively shifted the voltage-dependent inactivation curve, and slowed its recovery from inactivation with significant use-dependency at 5 and 10 Hz. Furthermore, exenatide prolonged AP duration and suppressed the sustained K+ current (Iss) and transient outward K+ current (Ito), but without inhibition of L-type Ca2+ current (ICa,L) in rat atrial myocytes. Exenatide prevented AF incidence and duration in rat hearts and rats. These findings demonstrate that exenatide inhibits IKv1.5 and INav1.5in vitro and reduces AF susceptibility in isolated rat hearts and rats.
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Affiliation(s)
- Qian Zhou
- Jiangsu Provincial Medical Innovation Center, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, China
| | - Guoliang Hao
- Institute of Electrophysiology, Henan Academy of Innovations in Medical Science, Zhengzhou, China; Henan SCOPE Research Institute of Electrophysiology Co Ltd, Kaifeng, China; Burdon Sanderson Cardiac Science Centre and BHF Centre of Research Excellence, Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, UK
| | - Wensen Xie
- Jiangsu Provincial Medical Innovation Center, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, China
| | - Bin Chen
- Jiangsu Provincial Medical Innovation Center, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, China; Nanjing Research Institute for Comprehensive Utilization of Wild Plants, Nanjing, China
| | - Wuguang Lu
- Jiangsu Provincial Medical Innovation Center, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, China
| | - Gongxin Wang
- Institute of Electrophysiology, Henan Academy of Innovations in Medical Science, Zhengzhou, China; Henan SCOPE Research Institute of Electrophysiology Co Ltd, Kaifeng, China
| | - Rongling Zhong
- Jiangsu Provincial Medical Innovation Center, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, China
| | - Jiao Chen
- Jiangsu Provincial Medical Innovation Center, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, China
| | - Juan Ye
- Jiangsu Provincial Medical Innovation Center, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, China
| | - Jianping Shen
- Jiangsu Provincial Medical Innovation Center, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, China
| | - Peng Cao
- Jiangsu Provincial Medical Innovation Center, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, China; State Key Laboratory on Technologies for Chinese Medicine Pharmaceutical Process Control and Intelligent Manufacture, Nanjing University of Chinese Medicine, Nanjing, China; Animal-Derived Chinese Medicine and Functional Peptides International Collaboration Joint Laboratory, Nanjing University of Chinese Medicine, Nanjing, China; Shandong Academy of Chinese Medicine, Jinan, China.
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3
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Mohammed ASA, Mohácsi G, Naveed M, Prorok J, Jost N, Virág L, Baczkó I, Topal L, Varró A. Cellular electrophysiological effects of the citrus flavonoid hesperetin in dog and rabbit cardiac ventricular preparations. Sci Rep 2024; 14:7237. [PMID: 38538818 PMCID: PMC10973458 DOI: 10.1038/s41598-024-57828-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Accepted: 03/21/2024] [Indexed: 05/01/2024] Open
Abstract
Recent experimental data shows that hesperetin, a citrus flavonoid, affects potassium channels and can prolong the QTc interval in humans. Therefore, in the present study we investigated the effects of hesperetin on various transmembrane ionic currents and on ventricular action potentials. Transmembrane current measurements and action potential recordings were performed by patch-clamp and the conventional microelectrode techniques in dog and rabbit ventricular preparations. At 10 µM concentration hesperetin did not, however, at 30 µM significantly decreased the amplitude of the IK1, Ito, IKr potassium currents. Hesperetin at 3-30 µM significantly and in a concentration-dependent manner reduced the amplitude of the IKs current. The drug significantly decreased the amplitudes of the INaL and ICaL currents at 30 µM. Hesperetin (10 and 30 µM) did not change the action potential duration in normal preparations, however, in preparations where the repolarization reserve had been previously attenuated by 100 nM dofetilide and 1 µg/ml veratrine, caused a moderate but significant prolongation of repolarization. These results suggest that hesperetin at close to relevant concentrations inhibits the IKs outward potassium current and thereby reduces repolarization reserve. This effect in certain specific situations may prolong the QT interval and consequently may enhance proarrhythmic risk.
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Affiliation(s)
- Aiman Saleh A Mohammed
- Department of Pharmacology and Pharmacotherapy, Albert Szent-Györgyi School of Medicine, University of Szeged, Szeged, Hungary
| | - Gábor Mohácsi
- Department of Pharmacology and Pharmacotherapy, Albert Szent-Györgyi School of Medicine, University of Szeged, Szeged, Hungary
| | - Muhammad Naveed
- Department of Pharmacology and Pharmacotherapy, Albert Szent-Györgyi School of Medicine, University of Szeged, Szeged, Hungary
| | - János Prorok
- Department of Pharmacology and Pharmacotherapy, Albert Szent-Györgyi School of Medicine, University of Szeged, Szeged, Hungary
- HUN-REN-SZTE Research Group for Cardiovascular Pharmacology, Hungarian Research Network, Szeged, Hungary
| | - Norbert Jost
- Department of Pharmacology and Pharmacotherapy, Albert Szent-Györgyi School of Medicine, University of Szeged, Szeged, Hungary
- HUN-REN-SZTE Research Group for Cardiovascular Pharmacology, Hungarian Research Network, Szeged, Hungary
| | - László Virág
- Department of Pharmacology and Pharmacotherapy, Albert Szent-Györgyi School of Medicine, University of Szeged, Szeged, Hungary
| | - István Baczkó
- Department of Pharmacology and Pharmacotherapy, Albert Szent-Györgyi School of Medicine, University of Szeged, Szeged, Hungary.
- HUN-REN-SZTE Research Group for Cardiovascular Pharmacology, Hungarian Research Network, Szeged, Hungary.
| | - Leila Topal
- Department of Pharmacology and Pharmacotherapy, Albert Szent-Györgyi School of Medicine, University of Szeged, Szeged, Hungary
| | - András Varró
- Department of Pharmacology and Pharmacotherapy, Albert Szent-Györgyi School of Medicine, University of Szeged, Szeged, Hungary.
- HUN-REN-SZTE Research Group for Cardiovascular Pharmacology, Hungarian Research Network, Szeged, Hungary.
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Bian Y, Tuo J, He L, Li W, Li S, Chu H, Zhao Y. Voltage-gated sodium channels in cancer and their specific inhibitors. Pathol Res Pract 2023; 251:154909. [PMID: 37939447 DOI: 10.1016/j.prp.2023.154909] [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: 02/19/2023] [Revised: 10/23/2023] [Accepted: 10/24/2023] [Indexed: 11/10/2023]
Abstract
Voltage-gated sodium channels (VGSCs) participate in generating and spreading action potentials in electrically excited cells such as neurons and muscle fibers. Abnormal expression of VGSCs has been observed in various types of tumors, while they are either not expressed or expressed at a low level in the matching normal tissue. Hence, this abnormal expression suggests that VGSCs confer some advantage or viability on tumor cells, making them a valuable indicator for identifying tumor cells. In addition, overexpression of VGSCs increased the ability of cancer cells to metastasize and invade, as well as correlated with the metastatic behavior of different cancers. Therefore, blocking VGSCs presents a new strategy for the treatment of cancers. A portion of this review summarizes the structure and function of VGSCs and also describes the correlation between VGSCs and cancers. Most importantly, we provide an overview of current research on various subtype-selective VGSC inhibitors and updates on ongoing clinical studies.
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Affiliation(s)
- Yuan Bian
- School of Life Science and Bio-Pharmaceutics, Shenyang Pharmaceutical University, Shenyang, Liaoning 110016, PR China
| | - Jiale Tuo
- School of Life Science and Bio-Pharmaceutics, Shenyang Pharmaceutical University, Shenyang, Liaoning 110016, PR China
| | - Liangpeng He
- School of Life Science and Bio-Pharmaceutics, Shenyang Pharmaceutical University, Shenyang, Liaoning 110016, PR China
| | - Wenwen Li
- School of Life Science and Bio-Pharmaceutics, Shenyang Pharmaceutical University, Shenyang, Liaoning 110016, PR China
| | - Shangxiao Li
- School of Medical Devices, Shenyang Pharmaceutical University, Benxi, Liaoning 117004, PR China
| | - Huiying Chu
- Laboratory of Molecular Modeling and Design, State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China
| | - Yongshan Zhao
- School of Life Science and Bio-Pharmaceutics, Shenyang Pharmaceutical University, Shenyang, Liaoning 110016, PR China.
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5
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Plijter IS, Verkerk AO, Wilders R. The Antidepressant Paroxetine Reduces the Cardiac Sodium Current. Int J Mol Sci 2023; 24:ijms24031904. [PMID: 36768229 PMCID: PMC9915920 DOI: 10.3390/ijms24031904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 01/05/2023] [Accepted: 01/13/2023] [Indexed: 01/21/2023] Open
Abstract
A considerable amount of literature has been published on antidepressants and cardiac ion channel dysfunction. The antidepressant paroxetine has been associated with Brugada syndrome and long QT syndrome, albeit on the basis of conflicting findings. The cardiac voltage-gated sodium channel (NaV1.5) is related to both of these syndromes, suggesting that paroxetine may have an effect on this channel. In the present study, we therefore carried out patch clamp experiments to examine the effect of paroxetine on human NaV1.5 channels stably expressed in human embryonic kidney 293 (HEK-293) cells as well as on action potentials of isolated rabbit left ventricular cardiomyocytes. Additionally, computer simulations were conducted to test the functional effects of the experimentally observed paroxetine-induced changes in the NaV1.5 current. We found that paroxetine led to a decrease in peak NaV1.5 current in a concentration-dependent manner with an IC50 of 6.8 ± 1.1 µM. In addition, paroxetine caused a significant hyperpolarizing shift in the steady-state inactivation of the NaV1.5 current as well as a significant increase in its rate of inactivation. Paroxetine (3 µM) affected the action potential of the left ventricular cardiomyocytes, significantly decreasing its maximum upstroke velocity and amplitude, both of which are mainly regulated by the NaV1.5 current. Our computer simulations demonstrated that paroxetine substantially reduces the fast sodium current of human left ventricular cardiomyocytes, thereby slowing conduction and reducing excitability in strands of cells, in particular if conduction and excitability are already inhibited by a loss-of-function mutation in the NaV1.5 encoding SCN5A gene. In conclusion, paroxetine acts as an inhibitor of NaV1.5 channels, which may enhance the effects of loss-of-function mutations in SCN5A.
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Affiliation(s)
- Ingmar S. Plijter
- Department of Medical Biology, Amsterdam Cardiovascular Sciences, Amsterdam UMC, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands
| | - Arie O. Verkerk
- Department of Medical Biology, Amsterdam Cardiovascular Sciences, Amsterdam UMC, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands
- Department of Experimental Cardiology, Heart Center, Amsterdam Cardiovascular Sciences, Amsterdam UMC, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands
| | - Ronald Wilders
- Department of Medical Biology, Amsterdam Cardiovascular Sciences, Amsterdam UMC, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands
- Correspondence:
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6
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Gu Y, Wang J, Li M, Zhong F, Xiang J, Xu Z. Inhibitory Effects of Nobiletin on Voltage-Gated Na + Channel in Rat Ventricular Myocytes Based on Electrophysiological Analysis and Molecular Docking Method. Int J Mol Sci 2022; 23:ijms232315175. [PMID: 36499507 PMCID: PMC9736168 DOI: 10.3390/ijms232315175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 11/27/2022] [Accepted: 11/30/2022] [Indexed: 12/07/2022] Open
Abstract
Nobiletin (NOB) has attracted much attention owing to its outstanding bioactivities. This study aimed to investigate its anti-arrhythmic effect through electrophysiological and molecular docking studies. We assessed the anti-arrhythmic effects of NOB using aconitine-induced ventricular arrhythmia in a rat model and the electrophysiological effects of NOB on rat cardiomyocytes utilizing whole-cell patch-clamp techniques. Moreover, we investigated the binding characters of NOB with rNav1.5, rNav1.5/QQQ, and hNaV1.5 via docking analysis, comparing them with amiodarone and aconitine. NOB pretreatment delayed susceptibility to ventricular premature and ventricular tachycardia and decreased the incidence of fatal ventricular fibrillation. Whole-cell patch-clamp assays demonstrated that the peak current density of the voltage-gated Na+ channel current was reversibly reduced by NOB in a concentration-dependent manner. The steady-state activation and recovery curves were shifted in the positive direction along the voltage axis, and the steady-state inactivation curve was shifted in the negative direction along the voltage axis, as shown by gating kinetics. The molecular docking study showed NOB formed a π-π stacking interaction with rNav1.5 and rNav1.5/QQQ upon Phe-1762, which is the homolog to Phe-1760 in hNaV1.5 and plays an important role in antiarrhythmic action This study reveals that NOB may act as a class I sodium channel anti-arrhythmia agent.
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Affiliation(s)
- Youwei Gu
- Department of Pharmacology, School of Medicine, Yangzhou University, Yangzhou 225009, China
| | - Jieru Wang
- Department of Pharmacology, School of Medicine, Yangzhou University, Yangzhou 225009, China
| | - Mengting Li
- Department of Pharmacology, School of Medicine, Yangzhou University, Yangzhou 225009, China
| | - Fei Zhong
- Department of Pharmacology, School of Medicine, Yangzhou University, Yangzhou 225009, China
| | - Jie Xiang
- Department of Pharmacology, School of Medicine, Yangzhou University, Yangzhou 225009, China
- Correspondence: (Z.X.); (J.X.)
| | - Zhengxin Xu
- Department of Pharmacology, School of Medicine, Yangzhou University, Yangzhou 225009, China
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou 225009, China
- Jingsu Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Treatment of Senile Diseases, Yangzhou 225001, China
- Jiangsu Key Laboratory of Experimental & Translational Non-Coding RNA Research, Yangzhou 225009, China
- Yeda Institute of Gene and Cell Therapy, Taizhou 318000, China
- Correspondence: (Z.X.); (J.X.)
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7
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Salehi B, Cruz-Martins N, Butnariu M, Sarac I, Bagiu IC, Ezzat SM, Wang J, Koay A, Sheridan H, Adetunji CO, Semwal P, Schoebitz M, Martorell M, Sharifi-Rad J. Hesperetin's health potential: moving from preclinical to clinical evidence and bioavailability issues, to upcoming strategies to overcome current limitations. Crit Rev Food Sci Nutr 2021; 62:4449-4464. [PMID: 33491467 DOI: 10.1080/10408398.2021.1875979] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Flavonoids are common in the plant kingdom and many of them have shown a wide spectrum of bioactive properties. Hesperetin (Hst), the aglycone form of hesperidin, is a great example, and is the most abundant flavonoid found in Citrus plants. This review aims to provide an overview on the in vitro, in vivo and clinical studies reporting the Hst pharmacological effects and to discuss the bioavailability-related issues. Preclinical studies have shown promising effects on cancer, cardiovascular diseases, carbohydrate dysregulation, bone health, and other pathologies. Clinical studies have supported the Hst promissory effects as cardioprotective and neuroprotective agent. However, further well-designed clinical trials are needed to address the other Hst effects observed in preclinical trials, as well as to a more in-depth understanding of its safety profile.
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Affiliation(s)
- Bahare Salehi
- Medical Ethics and Law Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Natália Cruz-Martins
- Faculty of Medicine, University of Porto, Alameda Professor Hernâni Monteiro, Porto, Portugal.,Institute for Research and Innovation in Health (i3S), University of Porto, Porto, Portugal.,Laboratory of Neuropsychophysiology, Faculty of Psychology and Education Sciences, University of Porto, Portugal
| | - Monica Butnariu
- Banat's University of Agricultural Sciences and Veterinary Medicine "King Michael I of Romania" from Timisoara, Timisoara, Romania
| | - Ioan Sarac
- Banat's University of Agricultural Sciences and Veterinary Medicine "King Michael I of Romania" from Timisoara, Timisoara, Romania
| | - Iulia-Cristina Bagiu
- Timisoara, Discipline of Microbiology, Victor Babes University of Medicine and Pharmacy, Timisoara, Romania
| | - Shahira M Ezzat
- Pharmacognosy Department, Faculty of Pharmacy, Cairo University, Cairo, Egypt.,Department of Pharmacognosy, Faculty of Pharmacy, October University for Modern Sciences and Arts (MSA), Giza, Egypt
| | - Jinfan Wang
- Trinity College Dublin. NatPro (Natural Products Research Centre), School of Pharmacy and Pharmaceutical Science, Dublin, Ireland
| | - Aaron Koay
- Trinity College Dublin. NatPro (Natural Products Research Centre), School of Pharmacy and Pharmaceutical Science, Dublin, Ireland
| | - Helen Sheridan
- Trinity College Dublin. NatPro (Natural Products Research Centre), School of Pharmacy and Pharmaceutical Science, Dublin, Ireland
| | - Charles Oluwaseun Adetunji
- Applied Microbiology, Biotechnology and Nanotechnology Laboratory, Department of Microbiology, Edo University Iyamho, Auchi, Edo State, Nigeria
| | - Prabhakar Semwal
- Department of Biotechnology, Graphic Era University, Dehradun, Uttarakhand, India.,Uttarakhand State Council for Science and Technology, Dehradun, Uttarakhand, India
| | - Mauricio Schoebitz
- Departamento de Suelos y Recursos Naturales, Facultad de Agronomía, Universidad de Concepción, Concepción, Chile
| | - Miquel Martorell
- Department of Nutrition and Dietetics, Faculty of Pharmacy, and Centre for Healthy Living, University of Concepción, Concepción, Chile.,Unidad de Desarrollo Tecnológico, Universidad de Concepción UDT, Concepcion, Chile
| | - Javad Sharifi-Rad
- Phytochemistry Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.,Facultad de Medicina, Universidad del Azuay, Cuenca, Ecuador
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Alvarez-Collazo J, López-Requena A, Galán L, Talavera A, Alvarez JL, Talavera K. The citrus flavanone hesperetin preferentially inhibits slow-inactivating currents of a long QT syndrome type 3 syndrome Na + channel mutation. Br J Pharmacol 2019; 176:1090-1105. [PMID: 30650182 DOI: 10.1111/bph.14577] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Revised: 12/12/2018] [Accepted: 12/21/2018] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND AND PURPOSE The citrus flavanone hesperetin has been proposed for the treatment of several human pathologies, but its cardiovascular actions remain largely unexplored. Here, we evaluated the effect of hesperetin on cardiac electrical and contractile activities, on aortic contraction, on the wild-type voltage-gated NaV 1.5 channel, and on a channel mutant (R1623Q) associated with lethal ventricular arrhythmias in the long QT syndrome type 3 (LQT3). EXPERIMENTAL APPROACH We used cardiac surface ECG and contraction force recordings to evaluate the effects of hesperetin in rat isolated hearts and aortic rings. Whole-cell patch clamp was used to record NaV 1.5 currents (INa ) in rat ventricular cardiomyocytes and in HEK293T cells expressing hNaV 1.5 wild-type or mutant channels. KEY RESULTS Hesperetin increased the QRS interval and heart rate and decreased the corrected QT interval and the cardiac and aortic contraction forces at concentrations equal or higher than 30 μmol·L-1 . Hesperetin blocked rat and human NaV 1.5 channels with an effective inhibitory concentration of ≈100 μmol·L-1 . This inhibition was enhanced at depolarized holding potentials and higher stimulation frequency and was reduced by the disruption of the binding site for local anaesthetics. Hesperetin increased the rate of inactivation and preferentially inhibited INa during the slow inactivation phase, these effects being more pronounced in the R1623Q mutant. CONCLUSIONS AND IMPLICATIONS Hesperetin preferentially inhibits the slow inactivation phase of INa , more markedly in the mutant R1623Q. Hesperetin could be used as a template to develop drugs against lethal cardiac arrhythmias in LQT3.
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Affiliation(s)
- Julio Alvarez-Collazo
- Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, VIB-KU Leuven Center for Brain & Disease Research, Leuven, Belgium
| | - Alejandro López-Requena
- Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, VIB-KU Leuven Center for Brain & Disease Research, Leuven, Belgium
| | - Loipa Galán
- Laboratory of Electrophysiology, Institute of Cardiology and Cardiovascular Surgery, Havana, Cuba
| | - Ariel Talavera
- Laboratory of Microscopy, Center for Microscopy and Molecular Imaging, Université Libre de Bruxelles, Gosselies, Belgium
| | - Julio L Alvarez
- Laboratory of Electrophysiology, Institute of Cardiology and Cardiovascular Surgery, Havana, Cuba
| | - Karel Talavera
- Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, VIB-KU Leuven Center for Brain & Disease Research, Leuven, Belgium
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