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Kang M, Mun SY, Zhuang W, Park M, Jeong J, Park H, Jung WK, Choi IW, Na S, Park WS. Inhibition of voltage-gated potassium channel by aripiprazole in rabbit coronary arterial smooth muscle cells. Eur J Pharmacol 2024; 973:176610. [PMID: 38663541 DOI: 10.1016/j.ejphar.2024.176610] [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: 03/24/2024] [Accepted: 04/22/2024] [Indexed: 05/08/2024]
Abstract
Aripiprazole, a third-generation antipsychotic, has been widely used to treat schizophrenia. In this study, we evaluated the effect of aripiprazole on voltage-gated potassium (Kv) channels in rabbit coronary arterial smooth muscle cells using the patch clamp technique. Aripiprazole reduced the Kv current in a concentration-dependent manner with a half-maximal inhibitory concentration of 0.89 ± 0.20 μM and a Hill coefficient of 1.30 ± 0.25. The inhibitory effect of aripiprazole on Kv channels was voltage-dependent, and an additional aripiprazole-induced decrease in the Kv current was observed in the voltage range of full channel activation. The decay rate of Kv channel inactivation was accelerated by aripiprazole. Aripiprazole shifted the steady-state activation curve to the right and the inactivation curve to the left. Application of a repetitive train of pulses (1 and 2 Hz) promoted inhibition of the Kv current by aripiprazole. Furthermore, the recovery time constant from inactivation increased in the presence of aripiprazole. Pretreatment of Kv1.5 subtype inhibitor reduced the inhibitory effect of aripiprazole. However, pretreatment with Kv 7 and Kv2.1 subtype inhibitors did not change the degree of aripiprazole-induced inhibition of the Kv current. We conclude that aripiprazole inhibits Kv channels in a concentration-, voltage-, time-, and use (state)-dependent manner by affecting the gating properties of the channels.
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Affiliation(s)
- Minji Kang
- Institute of Medical Sciences, Department of Physiology, Kangwon National University School of Medicine, Chuncheon, 24341, South Korea
| | - Seo-Yeong Mun
- Institute of Medical Sciences, Department of Physiology, Kangwon National University School of Medicine, Chuncheon, 24341, South Korea
| | - Wenwen Zhuang
- Institute of Medical Sciences, Department of Physiology, Kangwon National University School of Medicine, Chuncheon, 24341, South Korea
| | - Minju Park
- Institute of Medical Sciences, Department of Physiology, Kangwon National University School of Medicine, Chuncheon, 24341, South Korea
| | - Junsu Jeong
- Institute of Medical Sciences, Department of Physiology, Kangwon National University School of Medicine, Chuncheon, 24341, South Korea
| | - Hongzoo Park
- Institute of Medical Sciences, Department of Urology, Kangwon National University School of Medicine, Chuncheon, 24341, South Korea
| | - Won-Kyo Jung
- Department of Biomedical Engineering, and Center for Marine-Integrated Biomedical Technology (BK21 Plus), Pukyong National University, Busan, 48513, South Korea
| | - Il-Whan Choi
- Department of Microbiology, College of Medicine, Inje University, Busan, 48516, South Korea
| | - Sunghun Na
- Institute of Medical Sciences, Department of Obstetrics and Gynecology, Kangwon National University School of Medicine, Chuncheon, 24341, South Korea
| | - Won Sun Park
- Institute of Medical Sciences, Department of Physiology, Kangwon National University School of Medicine, Chuncheon, 24341, South Korea.
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Olivencia MA, Martínez-Casales M, Peraza DA, García-Redondo AB, Mondéjar-Parreño G, Hernanz R, Salaices M, Cogolludo A, Pennington MW, Valenzuela C, Briones AM. K V 1.3 channels are novel determinants of macrophage-dependent endothelial dysfunction in angiotensin II-induced hypertension in mice. Br J Pharmacol 2021; 178:1836-1854. [PMID: 33556997 DOI: 10.1111/bph.15407] [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: 07/16/2020] [Revised: 01/28/2021] [Accepted: 01/31/2021] [Indexed: 11/27/2022] Open
Abstract
BACKGROUND AND PURPOSE KV 1.3 channels are expressed in vascular smooth muscle cells (VSMCs), where they contribute to proliferation rather than contraction and participate in vascular remodelling. KV 1.3 channels are also expressed in macrophages, where they assemble with KV 1.5 channels (KV 1.3/KV 1.5), whose activation generates a KV current. In macrophages, the KV 1.3/KV 1.5 ratio is increased by classical activation (M1). Whether these channels are involved in angiotensin II (AngII)-induced vascular remodelling, and whether they can modulate the macrophage phenotype in hypertension, remains unknown. We characterized the role of KV 1.3 channels in vascular damage in hypertension. EXPERIMENTAL APPROACH We used AngII-infused mice treated with two selective KV 1.3 channel inhibitors (HsTX[R14A] and [EWSS]ShK). Vascular function and structure were measured using wire and pressure myography, respectively. VSMC and macrophage electrophysiology were studied using the patch-clamp technique; gene expression was analysed using RT-PCR. KEY RESULTS AngII increased KV 1.3 channel expression in mice aorta and peritoneal macrophages which was abolished by HsTX[R14A] treatment. KV 1.3 inhibition did not prevent hypertension, vascular remodelling, or stiffness but corrected AngII-induced macrophage infiltration and endothelial dysfunction in the small mesenteric arteries and/or aorta, via a mechanism independent of electrophysiological changes in VSMCs. AngII modified the electrophysiological properties of peritoneal macrophages, indicating an M1-like activated state, with enhanced expression of proinflammatory cytokines that induced endothelial dysfunction. These effects were prevented by KV 1.3 blockade. CONCLUSIONS AND IMPLICATIONS We unravelled a new role for KV 1.3 channels in the macrophage-dependent endothelial dysfunction induced by AngII in mice which might be due to modulation of macrophage phenotype.
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Affiliation(s)
- Miguel A Olivencia
- Departamento de Farmacología, Universidad Autónoma de Madrid, Instituto de Investigación Hospital La Paz, Madrid, Spain.,Departamento de Farmacología y Toxicología, Facultad de Medicina, Universidad Complutense de Madrid, Instituto de Investigación Sanitaria Gregorio Marañón (IiSGM), Madrid, Spain.,Ciber de Enfermedades Respiratorias (CIBERES), Spain
| | - Marta Martínez-Casales
- Departamento de Farmacología, Universidad Autónoma de Madrid, Instituto de Investigación Hospital La Paz, Madrid, Spain.,Departamento de Ciencias Básicas de la Salud, Facultad de Ciencias de la Salud, Universidad Rey Juan Carlos, Alcorcón, Spain
| | - Diego A Peraza
- Instituto de Investigaciones Biomédicas Alberto Sols (CSIC-UAM), Madrid, Spain
| | - Ana B García-Redondo
- Departamento de Farmacología, Universidad Autónoma de Madrid, Instituto de Investigación Hospital La Paz, Madrid, Spain.,Ciber de Enfermedades Cardiovasculares (CIBERCV), Spain
| | - Gema Mondéjar-Parreño
- Departamento de Farmacología y Toxicología, Facultad de Medicina, Universidad Complutense de Madrid, Instituto de Investigación Sanitaria Gregorio Marañón (IiSGM), Madrid, Spain.,Ciber de Enfermedades Respiratorias (CIBERES), Spain
| | - Raquel Hernanz
- Departamento de Ciencias Básicas de la Salud, Facultad de Ciencias de la Salud, Universidad Rey Juan Carlos, Alcorcón, Spain.,Ciber de Enfermedades Cardiovasculares (CIBERCV), Spain
| | - Mercedes Salaices
- Departamento de Farmacología, Universidad Autónoma de Madrid, Instituto de Investigación Hospital La Paz, Madrid, Spain.,Ciber de Enfermedades Cardiovasculares (CIBERCV), Spain
| | - Angel Cogolludo
- Departamento de Farmacología y Toxicología, Facultad de Medicina, Universidad Complutense de Madrid, Instituto de Investigación Sanitaria Gregorio Marañón (IiSGM), Madrid, Spain.,Ciber de Enfermedades Respiratorias (CIBERES), Spain
| | | | - Carmen Valenzuela
- Instituto de Investigaciones Biomédicas Alberto Sols (CSIC-UAM), Madrid, Spain.,Ciber de Enfermedades Cardiovasculares (CIBERCV), Spain
| | - Ana M Briones
- Departamento de Farmacología, Universidad Autónoma de Madrid, Instituto de Investigación Hospital La Paz, Madrid, Spain.,Ciber de Enfermedades Cardiovasculares (CIBERCV), Spain
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Hua C, Zhao J, Wang H, Chen F, Meng H, Chen L, Zhang Q, Yan J, Yuan L. Apple polyphenol relieves hypoxia-induced pulmonary arterial hypertension via pulmonary endothelium protection and smooth muscle relaxation: In vivo and in vitro studies. Biomed Pharmacother 2018; 107:937-944. [DOI: 10.1016/j.biopha.2018.08.080] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Revised: 08/15/2018] [Accepted: 08/15/2018] [Indexed: 12/25/2022] Open
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Moral-Sanz J, Menendez C, Moreno L, Moreno E, Cogolludo A, Perez-Vizcaino F. Pulmonary arterial dysfunction in insulin resistant obese Zucker rats. Respir Res 2011; 12:51. [PMID: 21513515 PMCID: PMC3111360 DOI: 10.1186/1465-9921-12-51] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2010] [Accepted: 04/22/2011] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Insulin resistance and obesity are strongly associated with systemic cardiovascular diseases. Recent reports have also suggested a link between insulin resistance with pulmonary arterial hypertension. The aim of this study was to analyze pulmonary vascular function in the insulin resistant obese Zucker rat. METHODS Large and small pulmonary arteries from obese Zucker rat and their lean counterparts were mounted for isometric tension recording. mRNA and protein expression was measured by RT-PCR or Western blot, respectively. KV currents were recorded in isolated pulmonary artery smooth muscle cells using the patch clamp technique. RESULTS Right ventricular wall thickness was similar in obese and lean Zucker rats. Lung BMPR2, KV1.5 and 5-HT2A receptor mRNA and protein expression and KV current density were also similar in the two rat strains. In conductance and resistance pulmonary arteries, the similar relaxant responses to acetylcholine and nitroprusside and unchanged lung eNOS expression revealed a preserved endothelial function. However, in resistance (but not in conductance) pulmonary arteries from obese rats a reduced response to several vasoconstrictor agents (hypoxia, phenylephrine and 5-HT) was observed. The hyporesponsiveness to vasoconstrictors was reversed by L-NAME and prevented by the iNOS inhibitor 1400W. CONCLUSIONS In contrast to rat models of type 1 diabetes or other mice models of insulin resistance, the obese Zucker rats did not show any of the characteristic features of pulmonary hypertension but rather a reduced vasoconstrictor response which could be prevented by inhibition of iNOS.
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Affiliation(s)
- Javier Moral-Sanz
- Departamento de Farmacologia, Facultad de Medicina, Universidad Complutense de Madrid, 28040 Madrid, Spain
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