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Llucià-Carol L, Muiño E, Cullell N, Cárcel-Márquez J, Lledós M, Gallego-Fabrega C, Martin-Campos J, Martí-Fàbregas J, Aguilera-Simón A, Planas AM, DeDiego ML, de Felipe Mimbrera A, Masjuan J, García-Madrona S, Segura T, González-Villar E, Serrano-Heras G, Domínguez Mayoral A, Menéndez-Valladares P, Montaner J, Migeotte I, Rahmouni S, Darcis G, Bernardo D, Rojo S, Schulte EC, Protzer U, Fricke L, Winter C, Niemi MEK, Cordioli M, Delgado P, Fernández-Cadenas I. Genetic Architecture of Ischaemic Strokes after COVID-19 Shows Similarities with Large Vessel Strokes. Int J Mol Sci 2023; 24:13452. [PMID: 37686257 PMCID: PMC10487930 DOI: 10.3390/ijms241713452] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 08/03/2023] [Accepted: 08/18/2023] [Indexed: 09/10/2023] Open
Abstract
We aimed to analyse whether patients with ischaemic stroke (IS) occurring within eight days after the onset of COVID-19 (IS-COV) are associated with a specific aetiology of IS. We used SUPERGNOVA to identify genome regions that correlate between the IS-COV cohort (73 IS-COV cases vs. 701 population controls) and different aetiological subtypes. Polygenic risk scores (PRSs) for each subtype were generated and tested in the IS-COV cohort using PRSice-2 and PLINK to find genetic associations. Both analyses used the IS-COV cohort and GWAS from MEGASTROKE (67,162 stroke patients vs. 454,450 population controls), GIGASTROKE (110,182 vs. 1,503,898), and the NINDS Stroke Genetics Network (16,851 vs. 32,473). Three genomic regions were associated (p-value < 0.05) with large artery atherosclerosis (LAA) and cardioembolic stroke (CES). We found four loci targeting the genes PITX2 (rs10033464, IS-COV beta = 0.04, p-value = 2.3 × 10-2, se = 0.02), previously associated with CES, HS6ST1 (rs4662630, IS-COV beta = -0.04, p-value = 1.3 × 10-3, se = 0.01), TMEM132E (rs12941838 IS-COV beta = 0.05, p-value = 3.6 × 10-4, se = 0.01), and RFFL (rs797989 IS-COV beta = 0.03, p-value = 1.0 × 10-2, se = 0.01). A statistically significant PRS was observed for LAA. Our results suggest that IS-COV cases are genetically similar to LAA and CES subtypes. Larger cohorts are needed to assess if the genetic factors in IS-COV cases are shared with the general population or specific to viral infection.
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Affiliation(s)
- Laia Llucià-Carol
- Stroke Pharmacogenomics and Genetics, Institut d’Investigació Biomèdica Sant Pau (IIB SANT PAU), Sant Quintí 77-79, 08041 Barcelona, Spain; (L.L.-C.); (M.L.)
- Departament de Genètica i de Microbiologia, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain
| | - Elena Muiño
- Stroke Pharmacogenomics and Genetics, Institut d’Investigació Biomèdica Sant Pau (IIB SANT PAU), Sant Quintí 77-79, 08041 Barcelona, Spain; (L.L.-C.); (M.L.)
| | - Natalia Cullell
- Stroke Pharmacogenomics and Genetics, Institut d’Investigació Biomèdica Sant Pau (IIB SANT PAU), Sant Quintí 77-79, 08041 Barcelona, Spain; (L.L.-C.); (M.L.)
- Department of Neurology, Hospital Universitari MútuaTerrassa, Fundació Docència i Recerca MútuaTerrassa, 08221 Terrassa, Spain
| | - Jara Cárcel-Márquez
- Stroke Pharmacogenomics and Genetics, Institut d’Investigació Biomèdica Sant Pau (IIB SANT PAU), Sant Quintí 77-79, 08041 Barcelona, Spain; (L.L.-C.); (M.L.)
| | - Miquel Lledós
- Stroke Pharmacogenomics and Genetics, Institut d’Investigació Biomèdica Sant Pau (IIB SANT PAU), Sant Quintí 77-79, 08041 Barcelona, Spain; (L.L.-C.); (M.L.)
| | - Cristina Gallego-Fabrega
- Stroke Pharmacogenomics and Genetics, Institut d’Investigació Biomèdica Sant Pau (IIB SANT PAU), Sant Quintí 77-79, 08041 Barcelona, Spain; (L.L.-C.); (M.L.)
| | - Jesús Martin-Campos
- Stroke Pharmacogenomics and Genetics, Institut d’Investigació Biomèdica Sant Pau (IIB SANT PAU), Sant Quintí 77-79, 08041 Barcelona, Spain; (L.L.-C.); (M.L.)
| | - Joan Martí-Fàbregas
- Department of Neurology, Institut d’Investigació Biomèdica Sant Pau (IIB SANT PAU), Hospital de la Santa Creu i Sant Pau, 08041 Barcelona, Spain
| | - Ana Aguilera-Simón
- Department of Neurology, Institut d’Investigació Biomèdica Sant Pau (IIB SANT PAU), Hospital de la Santa Creu i Sant Pau, 08041 Barcelona, Spain
| | - Anna M. Planas
- Institute for Biomedical Research of Barcelona (IIBB), Spanish National Research Council (CSIC), 08036 Barcelona, Spain
- Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), 08036 Barcelona, Spain
| | - Marta L. DeDiego
- Department of Molecular and Cell Biology, Centro Nacional de Biotecnología (CNB-CSIC), Campus Universidad Autónoma de Madrid, 28049 Madrid, Spain;
| | - Alicia de Felipe Mimbrera
- Instituto Ramón y Cajal de Investigación Sanitaria, Hospital Universitario Ramón Y Cajal, 28034 Madrid, Spain
| | - Jaime Masjuan
- Instituto Ramón y Cajal de Investigación Sanitaria, Hospital Universitario Ramón Y Cajal, 28034 Madrid, Spain
| | - Sebastián García-Madrona
- Instituto Ramón y Cajal de Investigación Sanitaria, Hospital Universitario Ramón Y Cajal, 28034 Madrid, Spain
| | - Tomás Segura
- Department of Neurology, University Hospital of Albacete, 02006 Albacete, Spain
| | | | - Gemma Serrano-Heras
- Department of Neurology, University Hospital of Albacete, 02006 Albacete, Spain
| | - Ana Domínguez Mayoral
- Institute of Biomedicine of Seville (IBiS), Hospital Universitario Virgen del Rocío, CSIC, Universidad de Sevilla, 410113 Seville, Spain
- Department of Neurology, Hospital Universitario Virgen Macarena, 41009 Seville, Spain
| | - Paloma Menéndez-Valladares
- Institute of Biomedicine of Seville (IBiS), Hospital Universitario Virgen del Rocío, CSIC, Universidad de Sevilla, 410113 Seville, Spain
- Department of Neurology, Hospital Universitario Virgen Macarena, 41009 Seville, Spain
| | - Joan Montaner
- Institute of Biomedicine of Seville (IBiS), Hospital Universitario Virgen del Rocío, CSIC, Universidad de Sevilla, 410113 Seville, Spain
- Department of Neurology, Hospital Universitario Virgen Macarena, 41009 Seville, Spain
| | - Isabelle Migeotte
- Fonds de la Recherche Scientifique (FNRS), 1000 Brussels, Belgium
- Centre de Génétique Humaine, Hopital Erasme, Université Libre de Bruxelles, 1050 Brussels, Belgium
| | - Souad Rahmouni
- Fonds de la Recherche Scientifique (FNRS), 1000 Brussels, Belgium
- Department of Biomedical and Preclinical Sciences, Faculty of Medicine, GIGA-Insitute, University of Liege, 4000 Liège, Belgium
| | - Gilles Darcis
- Fonds de la Recherche Scientifique (FNRS), 1000 Brussels, Belgium
- CHU of Liege, 4000 Liège, Belgium
| | - David Bernardo
- Mucosal Immunology Lab, Unidad de Excelencia del Instituto de Biomedicina y Genética Molecular (IBGM), Universidad de Valladolid-CSIC, 47005 Valladolid, Spain
| | - Silvia Rojo
- Department of Microbiology, Hospital Clínico Universitario de Valladolid, Gerencia Regional de Salud de Castilla y León (SACYL), 47003 Valladolid, Spain
| | - Eva C. Schulte
- Institute of Virology, Technical University Munich/Helmholtz Zentrum München, 81377 Munich, Germany
- Institute of Psychiatric Phenomics and Genomics, University Hospital, LMU Munich University, 80336 Munich, Germany
- Department of Psychiatry, University Hospital, LMU Munich University, 80336 Munich, Germany
- Institute of Human Genetics, University Hospital Bonn, Medical Faculty, University of Bonn, 53127 Bonn, Germany
- Department of Psychiatry and Psychotherapy, University Hospital Bonn, Medical Faculty, University of Bonn, 53127 Bonn, Germany
| | - Ulrike Protzer
- Institute of Virology, Technical University Munich/Helmholtz Zentrum München, 81377 Munich, Germany
| | - Lisa Fricke
- Department of Internal Medicine II, Klinikum Rechts der Isar, School of Medicine, Technical University of Munich (TUM), 81675 Munich, Germany;
| | - Christof Winter
- Institute of Clinical Chemistry and Pathobiochemistry, School of Medicine, Technische Universität München (TUM), 81675 Munich, Germany
- TranslaTUM, Center for Translational Cancer Research, Technische Universität München, 81675 Munich, Germany
| | - Mari E. K. Niemi
- Institute for Molecular Medicine Finland (FIMM), University of Helsinki, 00014 Helsinki, Finland; (M.E.K.N.)
| | - Mattia Cordioli
- Institute for Molecular Medicine Finland (FIMM), University of Helsinki, 00014 Helsinki, Finland; (M.E.K.N.)
| | - Pilar Delgado
- Department of Neurology, Hospital Universitari de la Vall d’Hebrón, Universitat Autònoma de Barcelona, 08035 Barcelona, Spain
| | - Israel Fernández-Cadenas
- Stroke Pharmacogenomics and Genetics, Institut d’Investigació Biomèdica Sant Pau (IIB SANT PAU), Sant Quintí 77-79, 08041 Barcelona, Spain; (L.L.-C.); (M.L.)
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Ernst J, Ehrenreich H, Weissenborn K, Grosse GM. Unraveling Mechanisms of Cryptogenic Stroke at the Genetic Level: A Systematic Literature Review. J Am Heart Assoc 2023; 12:e029843. [PMID: 37489722 PMCID: PMC10492995 DOI: 10.1161/jaha.123.029843] [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: 04/05/2023] [Accepted: 06/26/2023] [Indexed: 07/26/2023]
Abstract
Background A substantial proportion of ischemic strokes remain cryptogenic, which has important implications for secondary prevention. Identifying genetic variants related to mechanisms of stroke causes may provide a chance to clarify the actual causes of cryptogenic strokes. Methods and Results In a 2-step process, 2 investigators independently and systematically screened studies that reported genetic variants in regard to stroke causes that were published between January 1991 and April 2021. Studies on monogenetic disorders, investigation of vascular risk factors as the primary end point, reviews, meta-analyses, and studies not written in English were excluded. We extracted information on study types, ancestries, corresponding single nucleotide polymorphisms, and sample and effect sizes. There were 937 studies screened, and 233 were eligible. We identified 35 single nucleotide polymorphisms and allele variants that were associated with an overlap between cryptogenic strokes and another defined cause. Conclusions Associations of single variants with an overlap between cryptogenic stroke and another defined cause were limited to a few polymorphisms. A limitation of all studies is a low granularity of clinical data, which is of major importance in a complex disease such as stroke. Deep phenotyping is in supposed contradiction with large sample sizes but needed for genome-wide analyses. Future studies should attempt to address this restriction to advance the promising approach of elucidating the cause of stroke at the genetic level. Especially in a highly heterogenous disease such as ischemic stroke, genetics are promising to establish a personalized approach in diagnostics and treatment in the sense of precision medicine.
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Affiliation(s)
- Johanna Ernst
- Department of NeurologyHannover Medical SchoolHannoverGermany
| | - Hannelore Ehrenreich
- Clinical NeuroscienceMax Planck Institute for Multidisciplinary SciencesGöttingenGermany
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杨 若, 王 梦, 李 春, 于 欢, 王 小, 吴 俊, 王 斯, 王 伽, 陈 大, 吴 涛, 胡 永. [Interaction between ischemic stroke risk loci identified by genome-wide association studies and sleep habits]. BEIJING DA XUE XUE BAO. YI XUE BAN = JOURNAL OF PEKING UNIVERSITY. HEALTH SCIENCES 2022; 54:412-420. [PMID: 35701116 PMCID: PMC9197694 DOI: 10.19723/j.issn.1671-167x.2022.03.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 02/27/2022] [Indexed: 06/15/2023]
Abstract
OBJECTIVE To explore the relationship between sleep habits (sleep duration, sleep efficiency, sleep onset timing) and ischemic stroke, and whether there is an interaction between sleep habits and ischemic stroke susceptibility gene loci. METHODS A questionnaire survey, physical examination, blood biochemical testing and genotyping were conducted among rural residents in Beijing, and the gene loci of ischemic stroke suggested by previous genome-wide association studies (GWAS) were screened. Multivariable generalized linear model was used to analyze the correlation between sleep habits, sleep-gene interaction and ischemic stroke. RESULTS A total of 4 648 subjects with an average age of (58.5±8.7) years were enrolled, including 1 316 patients with ischemic stroke. Compared with non-stroke patients, stroke patients with sleep duration ≥9 hours, sleep efficiency < 80%, and sleep onset timing earlier than 22:00 accounted for a higher proportion (P < 0.05). There was no significant association between sleep duration and risk of ischemic stroke (OR=1.04, 95%CI: 0.99-1.10, P=0.085). Sleep efficiency was inversely associated with the risk of ischemic stroke (OR=0.18, 95%CI: 0.06-0.53, P=0.002). The risk of ischemic stroke in the subjects with sleep efficiency < 80% was 1.47-fold (95%CI: 1.03-2.10, P=0.033) of that in the subjects with sleep efficiency ≥80%. Falling asleep earlier than 22:00 was associated with 1.26 times greater risk of stroke than falling asleep between 22:00 and 22:59 (95%CI: 1.04-1.52, P=0.017). Multifactorial adjustment model showed that rs579459 on ABO gene had an interaction with sleep time (P for interaction =0.040). When there were two T alleles for rs579459 on the ABO gene, those who fell asleep before 22:00 had 1.56 times (95%CI: 1.20-2.04, P=0.001) the risk of stroke compared with those who fell asleep between 22:00 and 22:59, and there was no significant difference when the number of pathogenic alleles was 0 or 1. In the model adjusted only for gender, age and family structure, sleep duration and the number of T allele rs2634074 on PITX2 gene had an interaction with ischemic stroke (P for interaction=0.033). CONCLUSION Decreased sleep efficiency is associated with increased risk of ischemic stroke, and falling asleep earlier than 22:00 is associated with higher risk of ischemic stroke. Sleep onset timing interacted with rs579459 in ABO gene and the risk of ischemic stroke. Sleep duration and PITX2 rs2634074 may have a potential interaction with ischemic stroke risk.
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Affiliation(s)
- 若彤 杨
- />北京大学公共卫生学院流行病与卫生统计学系,北京 100191Department of epidemiology and Biostatistics, Peking University School of Public Health, Beijing 100191, China
| | - 梦莹 王
- />北京大学公共卫生学院流行病与卫生统计学系,北京 100191Department of epidemiology and Biostatistics, Peking University School of Public Health, Beijing 100191, China
| | - 春男 李
- />北京大学公共卫生学院流行病与卫生统计学系,北京 100191Department of epidemiology and Biostatistics, Peking University School of Public Health, Beijing 100191, China
| | - 欢 于
- />北京大学公共卫生学院流行病与卫生统计学系,北京 100191Department of epidemiology and Biostatistics, Peking University School of Public Health, Beijing 100191, China
| | - 小文 王
- />北京大学公共卫生学院流行病与卫生统计学系,北京 100191Department of epidemiology and Biostatistics, Peking University School of Public Health, Beijing 100191, China
| | - 俊慧 吴
- />北京大学公共卫生学院流行病与卫生统计学系,北京 100191Department of epidemiology and Biostatistics, Peking University School of Public Health, Beijing 100191, China
| | - 斯悦 王
- />北京大学公共卫生学院流行病与卫生统计学系,北京 100191Department of epidemiology and Biostatistics, Peking University School of Public Health, Beijing 100191, China
| | - 伽婷 王
- />北京大学公共卫生学院流行病与卫生统计学系,北京 100191Department of epidemiology and Biostatistics, Peking University School of Public Health, Beijing 100191, China
| | - 大方 陈
- />北京大学公共卫生学院流行病与卫生统计学系,北京 100191Department of epidemiology and Biostatistics, Peking University School of Public Health, Beijing 100191, China
| | - 涛 吴
- />北京大学公共卫生学院流行病与卫生统计学系,北京 100191Department of epidemiology and Biostatistics, Peking University School of Public Health, Beijing 100191, China
| | - 永华 胡
- />北京大学公共卫生学院流行病与卫生统计学系,北京 100191Department of epidemiology and Biostatistics, Peking University School of Public Health, Beijing 100191, China
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Two-Pore-Domain Potassium (K 2P-) Channels: Cardiac Expression Patterns and Disease-Specific Remodelling Processes. Cells 2021; 10:cells10112914. [PMID: 34831137 PMCID: PMC8616229 DOI: 10.3390/cells10112914] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 10/18/2021] [Accepted: 10/22/2021] [Indexed: 12/23/2022] Open
Abstract
Two-pore-domain potassium (K2P-) channels conduct outward K+ currents that maintain the resting membrane potential and modulate action potential repolarization. Members of the K2P channel family are widely expressed among different human cell types and organs where they were shown to regulate important physiological processes. Their functional activity is controlled by a broad variety of different stimuli, like pH level, temperature, and mechanical stress but also by the presence of lipids or pharmacological agents. In patients suffering from cardiovascular diseases, alterations in K2P-channel expression and function have been observed, suggesting functional significance and a potential therapeutic role of these ion channels. For example, upregulation of atrial specific K2P3.1 (TASK-1) currents in atrial fibrillation (AF) patients was shown to contribute to atrial action potential duration shortening, a key feature of AF-associated atrial electrical remodelling. Therefore, targeting K2P3.1 (TASK-1) channels might constitute an intriguing strategy for AF treatment. Further, mechanoactive K2P2.1 (TREK-1) currents have been implicated in the development of cardiac hypertrophy, cardiac fibrosis and heart failure. Cardiovascular expression of other K2P channels has been described, functional evidence in cardiac tissue however remains sparse. In the present review, expression, function, and regulation of cardiovascular K2P channels are summarized and compared among different species. Remodelling patterns, observed in disease models are discussed and compared to findings from clinical patients to assess the therapeutic potential of K2P channels.
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Dmitrzak-Weglarz M, Szczepankiewicz A, Kapelski, Chaberska J, Kwiatkowska K, Duda J, Dziuda S, Skibinska M, Reszka E, Pawlak J. Transcripts of orphan nuclear receptor (NR4A1) & potassium channel (KCNK17) genes as new potential biomarkers for depression. Meta Gene 2020. [DOI: 10.1016/j.mgene.2020.100786] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/08/2022] Open
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Wiedmann F, Schlund D, Voigt N, Ratte A, Kraft M, Katus HA, Schmidt C. N-glycosylation-dependent regulation of hK 2P17.1 currents. Mol Biol Cell 2019; 30:1425-1436. [PMID: 30969900 PMCID: PMC6724686 DOI: 10.1091/mbc.e18-10-0687] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Two pore-domain potassium (K2P) channels mediate potassium background currents that stabilize the resting membrane potential and facilitate action potential repolarization. In the human heart, hK2P17.1 channels are predominantly expressed in the atria and Purkinje cells. Reduced atrial hK2P17.1 protein levels were described in patients with atrial fibrillation or heart failure. Genetic alterations in hK2P17.1 were associated with cardiac conduction disorders. Little is known about posttranslational modifications of hK2P17.1. Here, we characterized glycosylation of hK2P17.1 and investigated how glycosylation alters its surface expression and activity. Wild-type hK2P17.1 channels and channels lacking specific glycosylation sites were expressed in Xenopus laevis oocytes, HEK-293T cells, and HeLa cells. N-glycosylation was disrupted using N-glycosidase F and tunicamycin. hK2P17.1 expression and activity were assessed using immunoblot analysis and a two-electrode voltage clamp technique. Channel subunits of hK2P17.1 harbor two functional N-glycosylation sites at positions N65 and N94. In hemi-glycosylated hK2P17.1 channels, functionality and membrane trafficking remain preserved. Disruption of both N-glycosylation sites results in loss of hK2P17.1 currents, presumably caused by impaired surface expression. This study confirms diglycosylation of hK2P17.1 channel subunits and its pivotal role in cell-surface targeting. Our findings underline the functional relevance of N-glycosylation in biogenesis and membrane trafficking of ion channels.
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Affiliation(s)
- Felix Wiedmann
- Department of Cardiology, University of Heidelberg, 69120 Heidelberg, Germany.,DZHK (German Center for Cardiovascular Research), Partner Site Heidelberg/Mannheim, University of Heidelberg, 69120 Heidelberg, Germany.,HCR, Heidelberg Center for Heart Rhythm Disorders, University of Heidelberg, 69120 Heidelberg, Germany
| | - Daniel Schlund
- Department of Cardiology, University of Heidelberg, 69120 Heidelberg, Germany
| | - Niels Voigt
- Institute of Pharmacology and Toxicology, University Medical Center Göttingen, Georg-August University of Göttingen, 37073 Göttingen, Germany.,DZHK (German Center for Cardiovascular Research), Partner Site Göttingen, University of Göttingen, 37073 Göttingen, Germany
| | - Antonius Ratte
- Department of Cardiology, University of Heidelberg, 69120 Heidelberg, Germany.,DZHK (German Center for Cardiovascular Research), Partner Site Heidelberg/Mannheim, University of Heidelberg, 69120 Heidelberg, Germany.,HCR, Heidelberg Center for Heart Rhythm Disorders, University of Heidelberg, 69120 Heidelberg, Germany
| | - Manuel Kraft
- Department of Cardiology, University of Heidelberg, 69120 Heidelberg, Germany.,DZHK (German Center for Cardiovascular Research), Partner Site Heidelberg/Mannheim, University of Heidelberg, 69120 Heidelberg, Germany.,HCR, Heidelberg Center for Heart Rhythm Disorders, University of Heidelberg, 69120 Heidelberg, Germany
| | - Hugo A Katus
- Department of Cardiology, University of Heidelberg, 69120 Heidelberg, Germany.,DZHK (German Center for Cardiovascular Research), Partner Site Heidelberg/Mannheim, University of Heidelberg, 69120 Heidelberg, Germany.,HCR, Heidelberg Center for Heart Rhythm Disorders, University of Heidelberg, 69120 Heidelberg, Germany
| | - Constanze Schmidt
- Department of Cardiology, University of Heidelberg, 69120 Heidelberg, Germany.,DZHK (German Center for Cardiovascular Research), Partner Site Heidelberg/Mannheim, University of Heidelberg, 69120 Heidelberg, Germany.,HCR, Heidelberg Center for Heart Rhythm Disorders, University of Heidelberg, 69120 Heidelberg, Germany
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Cardiovascular pharmacology of K 2P17.1 (TASK-4, TALK-2) two-pore-domain K + channels. Naunyn Schmiedebergs Arch Pharmacol 2018; 391:1119-1131. [PMID: 30008082 DOI: 10.1007/s00210-018-1535-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Accepted: 07/06/2018] [Indexed: 10/28/2022]
Abstract
K2P17.1 (TASK-4, TALK-2) potassium channels are expressed in the heart and represent potential targets for pharmacological management of atrial and ventricular arrhythmias. Reduced K2P17.1 expression was found in atria and ventricles of heart failure (HF) patients. Modulation of K2P17.1 currents by antiarrhythmic compounds has not been comprehensively studied to date. The objective of this study was to investigate acute effects of clinically relevant antiarrhythmic drugs on human K2P17.1 channels to provide a more complete picture of K2P17.1 electropharmacology. Whole-cell patch clamp and two-electrode voltage clamp electrophysiology was employed to study human K2P17.1 channel pharmacology. K2P17.1 channels expressed in Xenopus laevis oocytes were screened for sensitivity to antiarrhythmic drugs, revealing significant activation by propafenone (+ 296%; 100 μM), quinidine (+ 58%; 100 μM), mexiletine (+ 21%; 100 μM), propranolol (+ 139%; 100 μM), and metoprolol (+ 17%; 100 μM) within 60 min. In addition, the currents were inhibited by amiodarone (- 13%; 100 μM), sotalol (- 10%; 100 μM), verapamil (- 21%; 100 μM), and ranolazine (- 8%; 100 μM). K2P17.1 channels were not significantly affected by ajmaline and carvedilol. Concentration-dependent K2P17.1 activation by propafenone was characterized in more detail. The onset of activation was fast, and current-voltage relationships were not modulated by propafenone. K2P17.1 activation was confirmed in mammalian Chinese hamster ovary cells, revealing 7.8-fold current increase by 100 μM propafenone. Human K2P17.1 channels were sensitive to multiple antiarrhythmic drugs. Differential pharmacological regulation of repolarizing K2P17.1 background K+ channels may be employed for personalized antiarrhythmic therapy.
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Staudacher I, Illg C, Gierten J, Seehausen S, Schweizer PA, Katus HA, Thomas D. Identification and functional characterization of zebrafish K 2P 17.1 (TASK-4, TALK-2) two-pore-domain K + channels. Eur J Pharmacol 2018; 831:94-102. [DOI: 10.1016/j.ejphar.2018.05.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Revised: 05/04/2018] [Accepted: 05/08/2018] [Indexed: 12/12/2022]
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Chai S, Wan X, Nassal DM, Liu H, Moravec CS, Ramirez-Navarro A, Deschênes I. Contribution of two-pore K + channels to cardiac ventricular action potential revealed using human iPSC-derived cardiomyocytes. Am J Physiol Heart Circ Physiol 2017; 312:H1144-H1153. [PMID: 28341634 DOI: 10.1152/ajpheart.00107.2017] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2017] [Revised: 03/16/2017] [Accepted: 03/22/2017] [Indexed: 01/12/2023]
Abstract
Two-pore K+ (K2p) channels have been described in modulating background conductance as leak channels in different physiological systems. In the heart, the expression of K2p channels is heterogeneous with equivocation regarding their functional role. Our objective was to determine the K2p expression profile and their physiological and pathophysiological contribution to cardiac electrophysiology. Induced pluripotent stem cells (iPSCs) generated from humans were differentiated into cardiomyocytes (iPSC-CMs). mRNA was isolated from these cells, commercial iPSC-CM (iCells), control human heart ventricular tissue (cHVT), and ischemic (iHF) and nonischemic heart failure tissues (niHF). We detected 10 K2p channels in the heart. Comparing quantitative PCR expression of K2p channels between human heart tissue and iPSC-CMs revealed K2p1.1, K2p2.1, K2p5.1, and K2p17.1 to be higher expressed in cHVT, whereas K2p3.1 and K2p13.1 were higher in iPSC-CMs. Notably, K2p17.1 was significantly lower in niHF tissues compared with cHVT. Action potential recordings in iCells after K2p small interfering RNA knockdown revealed prolongations in action potential depolarization at 90% repolarization for K2p2.1, K2p3.1, K2p6.1, and K2p17.1. Here, we report the expression level of 10 human K2p channels in iPSC-CMs and how they compared with cHVT. Importantly, our functional electrophysiological data in human iPSC-CMs revealed a prominent role in cardiac ventricular repolarization for four of these channels. Finally, we also identified K2p17.1 as significantly reduced in niHF tissues and K2p4.1 as reduced in niHF compared with iHF. Thus, we advance the notion that K2p channels are emerging as novel players in cardiac ventricular electrophysiology that could also be remodeled in cardiac pathology and therefore contribute to arrhythmias.NEW & NOTEWORTHY Two-pore K+ (K2p) channels are traditionally regarded as merely background leak channels in myriad physiological systems. Here, we describe the expression profile of K2p channels in human-induced pluripotent stem cell-derived cardiomyocytes and outline a salient role in cardiac repolarization and pathology for multiple K2p channels.
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Affiliation(s)
- Sam Chai
- Department of Physiology and Biophysics, Case Western Reserve University, Cleveland, Ohio.,Heart and Vascular Research Center, Department of Medicine, MetroHealth Campus, Case Western Reserve University, Cleveland, Ohio; and
| | - Xiaoping Wan
- Heart and Vascular Research Center, Department of Medicine, MetroHealth Campus, Case Western Reserve University, Cleveland, Ohio; and
| | - Drew M Nassal
- Department of Physiology and Biophysics, Case Western Reserve University, Cleveland, Ohio.,Heart and Vascular Research Center, Department of Medicine, MetroHealth Campus, Case Western Reserve University, Cleveland, Ohio; and
| | - Haiyan Liu
- Heart and Vascular Research Center, Department of Medicine, MetroHealth Campus, Case Western Reserve University, Cleveland, Ohio; and
| | | | - Angelina Ramirez-Navarro
- Heart and Vascular Research Center, Department of Medicine, MetroHealth Campus, Case Western Reserve University, Cleveland, Ohio; and
| | - Isabelle Deschênes
- Department of Physiology and Biophysics, Case Western Reserve University, Cleveland, Ohio; .,Heart and Vascular Research Center, Department of Medicine, MetroHealth Campus, Case Western Reserve University, Cleveland, Ohio; and
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10
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IMPA2 polymorphisms and risk of ischemic stroke in a northwest Han Chinese population. Oncotarget 2016; 7:75273-75278. [PMID: 27661109 PMCID: PMC5342739 DOI: 10.18632/oncotarget.12133] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2016] [Accepted: 09/05/2016] [Indexed: 01/17/2023] Open
Abstract
Genetic association analysis has suggested that IMPA2 is a susceptibility gene for ischemic stroke (IS). To explore the association between IMPA2 polymorphisms and the risk of IS in a Han Chinese population, candidate gene association was performed using data from a case-control study of 488 IS patients and 503 control subjects. Odds ratios (ORs) and 95% confidence intervals (CIs) were used to assess the association, and associations were evaluated under dominant, recessive, and additive genetic models using PLINK software. There was a statistically significant difference in the “TC” genotype frequency of the IMPA2 polymorphism rs589247, between cases and controls (50.0% vs. 45.3%). Under the dominant model, rs589247 was associated with an increased risk of IS (OR=1.32, 95%CI: 1.01-1.73; P=0.040). There were no other associations between any of the seven additional IMPA2 polymorphisms and IS risk. This study is the first to find a correlation between an IMPA2 polymorphism and IS risk in a northwest Han Chinese population. These results may help to elucidate the molecular pathogenesis of this disease, and could potentially be used to predict IS risk. However, further studies are still needed to validate this association in other populations and with larger sample sizes.
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11
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Therapeutic targeting of two-pore-domain potassium (K(2P)) channels in the cardiovascular system. Clin Sci (Lond) 2016; 130:643-50. [PMID: 26993052 DOI: 10.1042/cs20150533] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
The improvement of treatment strategies in cardiovascular medicine is an ongoing process that requires constant optimization. The ability of a therapeutic intervention to prevent cardiovascular pathology largely depends on its capacity to suppress the underlying mechanisms. Attenuation or reversal of disease-specific pathways has emerged as a promising paradigm, providing a mechanistic rationale for patient-tailored therapy. Two-pore-domain K(+) (K(2P)) channels conduct outward K(+) currents that stabilize the resting membrane potential and facilitate action potential repolarization. K(2P) expression in the cardiovascular system and polymodal K2P current regulation suggest functional significance and potential therapeutic roles of the channels. Recent work has focused primarily on K(2P)1.1 [tandem of pore domains in a weak inwardly rectifying K(+) channel (TWIK)-1], K(2P)2.1 [TWIK-related K(+) channel (TREK)-1], and K(2P)3.1 [TWIK-related acid-sensitive K(+) channel (TASK)-1] channels and their role in heart and vessels. K(2P) currents have been implicated in atrial and ventricular arrhythmogenesis and in setting the vascular tone. Furthermore, the association of genetic alterations in K(2P)3.1 channels with atrial fibrillation, cardiac conduction disorders and pulmonary arterial hypertension demonstrates the relevance of the channels in cardiovascular disease. The function, regulation and clinical significance of cardiovascular K(2P) channels are summarized in the present review, and therapeutic options are emphasized.
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12
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Hancox JC, James AF, Marrion NV, Zhang H, Thomas D. Novel ion channel targets in atrial fibrillation. Expert Opin Ther Targets 2016; 20:947-58. [DOI: 10.1517/14728222.2016.1159300] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Jules C. Hancox
- School of Physiology, Pharmacology and Neuroscience, University Walk, Bristol, UK
| | - Andrew F. James
- School of Physiology, Pharmacology and Neuroscience, University Walk, Bristol, UK
| | - Neil V. Marrion
- School of Physiology, Pharmacology and Neuroscience, University Walk, Bristol, UK
| | - Henggui Zhang
- Biological Physics Group, School of Physics and Astronomy, University of Manchester, Manchester, United Kingdom
| | - Dierk Thomas
- Department of Cardiology, University of Heidelberg, Heidelberg, Germany
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13
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He L, Ma Q, Wang Y, Liu X, Yuan Y, Zhang Y, Ou W, Liu L, Tan X, Wang X. Association of variants in KCNK17 gene with ischemic stroke and cerebral hemorrhage in a Chinese population. J Stroke Cerebrovasc Dis 2014; 23:2322-7. [PMID: 25179130 DOI: 10.1016/j.jstrokecerebrovasdis.2014.04.029] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2014] [Revised: 04/10/2014] [Accepted: 04/16/2014] [Indexed: 01/24/2023] Open
Abstract
BACKGROUND KCNK17 (potassium channel, subfamily K, member17) has a role in the pathogenesis of stroke. We reported previously that rs10947803 single-nucleotide polymorphism (SNP) in KCNK17 is associated with cerebral hemorrhage in a Chinese population. The aim of the present study was to examine other SNPs in the KCNK17 gene that are associated with cerebral hemorrhage and other subtypes of stroke in the Chinese population. METHODS A total of 1356 subjects with stroke and 1225 control patients were examined by a case-control methodology. The SNPs (rs12214600, rs12195376, rs2758912, and rs10807204) in KCNK17 gene were genotyped with the TaqMan real-time polymerase chain reaction assay. RESULTS rs12214600 SNP in KCNK17 was significantly associated with cerebral hemorrhage (unadjusted odds ratio = .55, 95% confidence interval = .35-.86, P = .008, q = .0328) under the allele model. After adjusting for age, sex, and hypertension, we found that the association remained significant (odds ratio = .56, 95% confidence interval = .35-.90, P = .0158). There was no association detected for other SNPs in KCNK17 with cerebral hemorrhage, and none of the SNPs in KCNK17 had an association with ischemic stroke. CONCLUSIONS The T carrier of an SNP (rs12214600) is associated with reduced risk of cerebral hemorrhage in the Chinese population, together with previous findings that SNPs rs10947803 and rs12214600 in the KCNK17 gene are associated with hemorrhagic stroke, but none of the SNPs tested had an association with ischemic stroke. KCNK17 may be important in the pathogenesis of cerebral hemorrhage.
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Affiliation(s)
- Lingbin He
- The First Affiliated Hospital, Medical College of Shantou University, Shantou, Guangdong, China; Laboratory of Human Genetics, Beijing Hypertension League Institute, Beijing, China
| | - Qingfeng Ma
- Department of Neurology, Xuanwu Hospital, Beijing, China
| | - Yongqin Wang
- Laboratory of Human Genetics, Beijing Hypertension League Institute, Beijing, China; School of Basic Courses, Baotou Medical College, Baotou, Neimenggu, China
| | - Xin Liu
- Laboratory of Human Genetics, Beijing Hypertension League Institute, Beijing, China
| | - Yuan Yuan
- The First Affiliated Hospital, Medical College of Shantou University, Shantou, Guangdong, China; Laboratory of Human Genetics, Beijing Hypertension League Institute, Beijing, China
| | - Yongzhi Zhang
- The First Affiliated Hospital, Medical College of Shantou University, Shantou, Guangdong, China; Laboratory of Human Genetics, Beijing Hypertension League Institute, Beijing, China
| | - Wenjing Ou
- Laboratory of Human Genetics, Beijing Hypertension League Institute, Beijing, China; Public Health School; Harbin Medical University, Harbin, Heilongjiang, China
| | - Lisheng Liu
- Laboratory of Human Genetics, Beijing Hypertension League Institute, Beijing, China
| | - Xuerui Tan
- The First Affiliated Hospital, Medical College of Shantou University, Shantou, Guangdong, China.
| | - Xingyu Wang
- The First Affiliated Hospital, Medical College of Shantou University, Shantou, Guangdong, China; Laboratory of Human Genetics, Beijing Hypertension League Institute, Beijing, China; National Research Institute for Family Planning, Beijing, China.
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Seyler C, Schweizer PA, Zitron E, Katus HA, Thomas D. Vernakalant activates human cardiac K(2P)17.1 background K(+) channels. Biochem Biophys Res Commun 2014; 451:415-20. [PMID: 25108155 DOI: 10.1016/j.bbrc.2014.07.133] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2014] [Accepted: 07/30/2014] [Indexed: 01/12/2023]
Abstract
Atrial fibrillation (AF) contributes significantly to cardiovascular morbidity and mortality. The growing epidemic is associated with cardiac repolarization abnormalities and requires the development of more effective antiarrhythmic strategies. Two-pore-domain K(+) channels stabilize the resting membrane potential and repolarize action potentials. Recently discovered K2P17.1 channels are expressed in human atrium and represent potential targets for AF therapy. However, cardiac electropharmacology of K2P17.1 channels remains to be investigated. This study was designed to elucidate human K2P17.1 regulation by antiarrhythmic drugs. Two-electrode voltage clamp and whole-cell patch clamp electrophysiology was used to record K2P currents from Xenopus oocytes and Chinese hamster ovary (CHO) cells. The class III antiarrhythmic compound vernakalant activated K2P17.1 currents in oocytes an in mammalian cells (EC50,CHO=40 μM) in frequency-dependent manner. K2P17.1 channel activation by vernakalant was specific among K2P channel family members. By contrast, vernakalant reduced K2P4.1 and K2P10.1 currents, in line with K2P2.1 blockade reported earlier. K2P17.1 open rectification characteristics and current-voltage relationships were not affected by vernakalant. The class I drug flecainide did not significantly modulate K2P currents. In conclusion, vernakalant activates K2P17.1 background potassium channels. Pharmacologic K2P channel activation by cardiovascular drugs has not been reported previously and may be employed for personalized rhythm control in patients with AF-associated reduction of K(+) channel function.
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Affiliation(s)
- Claudia Seyler
- Department of Cardiology, Medical University Hospital, Heidelberg, Im Neuenheimer Feld 410, D-69120 Heidelberg, Germany
| | - Patrick A Schweizer
- Department of Cardiology, Medical University Hospital, Heidelberg, Im Neuenheimer Feld 410, D-69120 Heidelberg, Germany
| | - Edgar Zitron
- Department of Cardiology, Medical University Hospital, Heidelberg, Im Neuenheimer Feld 410, D-69120 Heidelberg, Germany
| | - Hugo A Katus
- Department of Cardiology, Medical University Hospital, Heidelberg, Im Neuenheimer Feld 410, D-69120 Heidelberg, Germany
| | - Dierk Thomas
- Department of Cardiology, Medical University Hospital, Heidelberg, Im Neuenheimer Feld 410, D-69120 Heidelberg, Germany.
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15
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Cocchi E, Drago A, de Ronchi D, Serretti A. The genetics of vascular incidents associated with second-generation antipsychotic administration. Expert Rev Clin Pharmacol 2013; 7:75-90. [PMID: 24325740 DOI: 10.1586/17512433.2014.865515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Second-generation antipsychotics (SGA) have been associated with risk of stroke in elderly patients, but the molecular and genetic background under this association has been poorly investigated. The aim of the present study was to prioritize a list of genes with an SGA altered expression in order to characterize the genetic background of the SGA-associated stroke risk. Genes with evidence of an altered expression after SGA treatments in genome-wide investigations, both in animals and men, were identified. The Genetic Association Database (GAD) served to verify which of these genes had a proven positive association with an increased stroke risk, and along with it each evidence was tested and recorded. Seven hundred and forty five genes had evidence of a change of their expression profile after SGA administration in various studies. Nine out of them have also been significantly related to an increased strokes risk. We identified and described nine genes as potential candidates for future genetic studies aimed at identifying the genetic background of the SGA-related stroke risk. Further, we identify the molecular pathways in which these genes operate in order to provide a molecular framework to understand on which basis SGA may enhance the risk for stroke.
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Affiliation(s)
- Enrico Cocchi
- Department of Biomedical and NeuroMotor Sciences, University of Bologna, Italy
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16
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An Association Study on Renalase Polymorphisms and Ischemic Stroke in a Chinese Population. Neuromolecular Med 2013; 15:396-404. [DOI: 10.1007/s12017-013-8227-0] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2013] [Accepted: 03/16/2013] [Indexed: 01/29/2023]
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17
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The rs10947803 SNP of KCNK17 is associated with cerebral hemorrhage but not ischemic stroke in a Chinese population. Neurosci Lett 2013; 539:82-5. [PMID: 23391755 DOI: 10.1016/j.neulet.2013.01.041] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2012] [Revised: 01/16/2013] [Accepted: 01/18/2013] [Indexed: 11/22/2022]
Abstract
KCNK17 (potassium channel, subfamily K, member17) was first discovered to associate with the pathogenesis of ischemic stroke in the first genome-wide association study. The rs10947803 SNP in KCNK17 is significantly associated with ischemic stroke in Caucasian populations. The aim of the present study was to investigate the association with strokes in the Chinese population. A total of 1364 stroke patients and 1293 controls were examined using a case-control methodology. The rs10947803 SNP in KCNK17 was genotyped by a TaqMan real-time PCR assay. The rs10947803 SNP (A allele) of KCNK17 was significantly associated with cerebral hemorrhage (for AA+AC versus CC, unadjusted odds ratio [OR]=1.70; 95% confidence interval [CI], 1.08-2.69; P=0.020). After adjustment for age and sex, the association remained significant for AA+AC versus CC, OR=1.65; 95% CI, 1.04-2.62; P=0.033. In addition, the rs10947803 SNP in KCNK17 was not associated with ischemic stroke (for AA+AC versus CC, unadjusted OR=0.92; 95% CI, 0.81-1.05; P=0.212, after age- and sex-adjustment, OR=0.87; 95% CI, 0.72-1.05; P=0.143). The rs10947803 SNP (A allele) in KCNK17 increases the risk of cerebral hemorrhage but not ischemic stroke in the Chinese population.
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18
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Fernández-Cadenas I, del Río-Espínola A, Giralt D, Domingues-Montanari S, Quiroga A, Mendióroz M, Ruíz A, Ribó M, Serena J, Obach V, Freijo MM, Martí-Fábregas J, Delgado P, Montaner J. IL1BandVWFVariants Are Associated With Fibrinolytic Early Recanalization in Patients With Ischemic Stroke. Stroke 2012; 43:2659-65. [DOI: 10.1161/strokeaha.112.657007] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Israel Fernández-Cadenas
- From the Neurovascular Research Laboratory and Neurovascular Unit, Neurology and Medicine Departments-Universitat Autònoma de Barcelona (I.F.-C., A.d.R.-E., D.G., S.D.-M., M.M., M.R., P.D., J.M.) and the Experimental Cardiology Research Laboratory (A.Q.), Vall d'Hebrón Hospital, Barcelona, Spain; the Department of Structural Genomics, Neocodex (A.R.), Seville, Spain; the Memory Clinic of Fundació ACE, Institut Català de Neurociències Aplicades, Barcelona, Spain (A.R.); the Department of Neurology,
| | - Alberto del Río-Espínola
- From the Neurovascular Research Laboratory and Neurovascular Unit, Neurology and Medicine Departments-Universitat Autònoma de Barcelona (I.F.-C., A.d.R.-E., D.G., S.D.-M., M.M., M.R., P.D., J.M.) and the Experimental Cardiology Research Laboratory (A.Q.), Vall d'Hebrón Hospital, Barcelona, Spain; the Department of Structural Genomics, Neocodex (A.R.), Seville, Spain; the Memory Clinic of Fundació ACE, Institut Català de Neurociències Aplicades, Barcelona, Spain (A.R.); the Department of Neurology,
| | - Dolors Giralt
- From the Neurovascular Research Laboratory and Neurovascular Unit, Neurology and Medicine Departments-Universitat Autònoma de Barcelona (I.F.-C., A.d.R.-E., D.G., S.D.-M., M.M., M.R., P.D., J.M.) and the Experimental Cardiology Research Laboratory (A.Q.), Vall d'Hebrón Hospital, Barcelona, Spain; the Department of Structural Genomics, Neocodex (A.R.), Seville, Spain; the Memory Clinic of Fundació ACE, Institut Català de Neurociències Aplicades, Barcelona, Spain (A.R.); the Department of Neurology,
| | - Sophie Domingues-Montanari
- From the Neurovascular Research Laboratory and Neurovascular Unit, Neurology and Medicine Departments-Universitat Autònoma de Barcelona (I.F.-C., A.d.R.-E., D.G., S.D.-M., M.M., M.R., P.D., J.M.) and the Experimental Cardiology Research Laboratory (A.Q.), Vall d'Hebrón Hospital, Barcelona, Spain; the Department of Structural Genomics, Neocodex (A.R.), Seville, Spain; the Memory Clinic of Fundació ACE, Institut Català de Neurociències Aplicades, Barcelona, Spain (A.R.); the Department of Neurology,
| | - Adoracion Quiroga
- From the Neurovascular Research Laboratory and Neurovascular Unit, Neurology and Medicine Departments-Universitat Autònoma de Barcelona (I.F.-C., A.d.R.-E., D.G., S.D.-M., M.M., M.R., P.D., J.M.) and the Experimental Cardiology Research Laboratory (A.Q.), Vall d'Hebrón Hospital, Barcelona, Spain; the Department of Structural Genomics, Neocodex (A.R.), Seville, Spain; the Memory Clinic of Fundació ACE, Institut Català de Neurociències Aplicades, Barcelona, Spain (A.R.); the Department of Neurology,
| | - Maite Mendióroz
- From the Neurovascular Research Laboratory and Neurovascular Unit, Neurology and Medicine Departments-Universitat Autònoma de Barcelona (I.F.-C., A.d.R.-E., D.G., S.D.-M., M.M., M.R., P.D., J.M.) and the Experimental Cardiology Research Laboratory (A.Q.), Vall d'Hebrón Hospital, Barcelona, Spain; the Department of Structural Genomics, Neocodex (A.R.), Seville, Spain; the Memory Clinic of Fundació ACE, Institut Català de Neurociències Aplicades, Barcelona, Spain (A.R.); the Department of Neurology,
| | - Agustin Ruíz
- From the Neurovascular Research Laboratory and Neurovascular Unit, Neurology and Medicine Departments-Universitat Autònoma de Barcelona (I.F.-C., A.d.R.-E., D.G., S.D.-M., M.M., M.R., P.D., J.M.) and the Experimental Cardiology Research Laboratory (A.Q.), Vall d'Hebrón Hospital, Barcelona, Spain; the Department of Structural Genomics, Neocodex (A.R.), Seville, Spain; the Memory Clinic of Fundació ACE, Institut Català de Neurociències Aplicades, Barcelona, Spain (A.R.); the Department of Neurology,
| | - Marc Ribó
- From the Neurovascular Research Laboratory and Neurovascular Unit, Neurology and Medicine Departments-Universitat Autònoma de Barcelona (I.F.-C., A.d.R.-E., D.G., S.D.-M., M.M., M.R., P.D., J.M.) and the Experimental Cardiology Research Laboratory (A.Q.), Vall d'Hebrón Hospital, Barcelona, Spain; the Department of Structural Genomics, Neocodex (A.R.), Seville, Spain; the Memory Clinic of Fundació ACE, Institut Català de Neurociències Aplicades, Barcelona, Spain (A.R.); the Department of Neurology,
| | - Joaquin Serena
- From the Neurovascular Research Laboratory and Neurovascular Unit, Neurology and Medicine Departments-Universitat Autònoma de Barcelona (I.F.-C., A.d.R.-E., D.G., S.D.-M., M.M., M.R., P.D., J.M.) and the Experimental Cardiology Research Laboratory (A.Q.), Vall d'Hebrón Hospital, Barcelona, Spain; the Department of Structural Genomics, Neocodex (A.R.), Seville, Spain; the Memory Clinic of Fundació ACE, Institut Català de Neurociències Aplicades, Barcelona, Spain (A.R.); the Department of Neurology,
| | - Victor Obach
- From the Neurovascular Research Laboratory and Neurovascular Unit, Neurology and Medicine Departments-Universitat Autònoma de Barcelona (I.F.-C., A.d.R.-E., D.G., S.D.-M., M.M., M.R., P.D., J.M.) and the Experimental Cardiology Research Laboratory (A.Q.), Vall d'Hebrón Hospital, Barcelona, Spain; the Department of Structural Genomics, Neocodex (A.R.), Seville, Spain; the Memory Clinic of Fundació ACE, Institut Català de Neurociències Aplicades, Barcelona, Spain (A.R.); the Department of Neurology,
| | - Mari Mar Freijo
- From the Neurovascular Research Laboratory and Neurovascular Unit, Neurology and Medicine Departments-Universitat Autònoma de Barcelona (I.F.-C., A.d.R.-E., D.G., S.D.-M., M.M., M.R., P.D., J.M.) and the Experimental Cardiology Research Laboratory (A.Q.), Vall d'Hebrón Hospital, Barcelona, Spain; the Department of Structural Genomics, Neocodex (A.R.), Seville, Spain; the Memory Clinic of Fundació ACE, Institut Català de Neurociències Aplicades, Barcelona, Spain (A.R.); the Department of Neurology,
| | - Joan Martí-Fábregas
- From the Neurovascular Research Laboratory and Neurovascular Unit, Neurology and Medicine Departments-Universitat Autònoma de Barcelona (I.F.-C., A.d.R.-E., D.G., S.D.-M., M.M., M.R., P.D., J.M.) and the Experimental Cardiology Research Laboratory (A.Q.), Vall d'Hebrón Hospital, Barcelona, Spain; the Department of Structural Genomics, Neocodex (A.R.), Seville, Spain; the Memory Clinic of Fundació ACE, Institut Català de Neurociències Aplicades, Barcelona, Spain (A.R.); the Department of Neurology,
| | - Pilar Delgado
- From the Neurovascular Research Laboratory and Neurovascular Unit, Neurology and Medicine Departments-Universitat Autònoma de Barcelona (I.F.-C., A.d.R.-E., D.G., S.D.-M., M.M., M.R., P.D., J.M.) and the Experimental Cardiology Research Laboratory (A.Q.), Vall d'Hebrón Hospital, Barcelona, Spain; the Department of Structural Genomics, Neocodex (A.R.), Seville, Spain; the Memory Clinic of Fundació ACE, Institut Català de Neurociències Aplicades, Barcelona, Spain (A.R.); the Department of Neurology,
| | - Joan Montaner
- From the Neurovascular Research Laboratory and Neurovascular Unit, Neurology and Medicine Departments-Universitat Autònoma de Barcelona (I.F.-C., A.d.R.-E., D.G., S.D.-M., M.M., M.R., P.D., J.M.) and the Experimental Cardiology Research Laboratory (A.Q.), Vall d'Hebrón Hospital, Barcelona, Spain; the Department of Structural Genomics, Neocodex (A.R.), Seville, Spain; the Memory Clinic of Fundació ACE, Institut Català de Neurociències Aplicades, Barcelona, Spain (A.R.); the Department of Neurology,
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TTC7B emerges as a novel risk factor for ischemic stroke through the convergence of several genome-wide approaches. J Cereb Blood Flow Metab 2012; 32:1061-72. [PMID: 22453632 PMCID: PMC3367223 DOI: 10.1038/jcbfm.2012.24] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
We hereby propose a novel approach to the identification of ischemic stroke (IS) susceptibility genes that involves converging data from several unbiased genetic and genomic tools. We tested the association between IS and genes differentially expressed between cases and controls, then determined which data mapped to previously reported linkage peaks and were nominally associated with stroke in published genome-wide association studies. We first performed gene expression profiling in peripheral blood mononuclear cells of 20 IS cases and 20 controls. Sixteen differentially expressed genes mapped to reported whole-genome linkage peaks, including the TTC7B gene, which has been associated with major cardiovascular disease. At the TTC7B locus, 46 tagging polymorphisms were tested for association in 565 Portuguese IS cases and 520 controls. Markers nominally associated in at least one test and defining associated haplotypes were then examined in 570 IS Spanish cases and 390 controls. Several polymorphisms and haplotypes in the intron 5-intron 6 region of TTC7B were also associated with IS risk in the Spanish and combined data sets. Multiple independent lines of evidence therefore support the role of TTC7B in stroke susceptibility, but further work is warranted to identify the exact risk variant and its pathogenic potential.
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20
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Domingues-Montanari S, Fernandez-Cadenas I, del Rio-Espinola A, Mendioroz M, Ribo M, Obach V, Marti-Fabregas J, Freijo M, Serena J, Corbeto N, Chacon P, Alvarez-Sabin J, Montaner J. The I/D polymorphism of the ACE1 gene is not associated with ischaemic stroke in Spanish individuals. Eur J Neurol 2011; 17:1390-2. [PMID: 20402757 DOI: 10.1111/j.1468-1331.2010.03022.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
BACKGROUND The angiotensin-converting enzyme 1 (ACE1) gene has been extensively studied in stroke, yet generating conflicting results. The goal of our study was thus to clarify the influence of the ACE1 on the risk of suffering an ischaemic stroke (IS). METHODS We genotyped the rs4341 (in linkage disequilibrium with the I/D polymorphism) of the ACE1 gene in 531 patients with IS and 549 healthy controls, and the rs1799752 (I/D polymorphism) in a subset of 68 patients with IS and 27 controls. We also performed functional studies by measuring serum ACE protein levels and enzymatic activity in 27 controls, 68 patients with IS at baseline and 35 patients with IS 24 h after onset of stroke symptoms. RESULTS There was no association of the ACE1 variant with IS, although it affected ACE protein levels (P = 0.001). Indeed, patients with IS showed lower ACE levels than controls in the acute phase (115.9 } 38.9 vs. 174.1 } 56.1 ng/ml, P < 0.001), but not in the chronic phase (168.2 } 51.2, P = 0.673), and ACE protein levels did not differ between IS etiologies. Similar results were found for ACE activity. CONCLUSIONS The D allele of the ACE1 I/D and ACE protein levels was not associated with a higher risk of IS in Spanish individuals.
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Affiliation(s)
- S Domingues-Montanari
- Neurovascular Research Laboratory and Neurovascular Unit, Neurology Department-Universitat Autonoma of Barcelona, Institute of Research of Vall dHebron Hospital, Barcelona, Spain
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21
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Es-Salah-Lamoureux Z, Steele DF, Fedida D. Research into the therapeutic roles of two-pore-domain potassium channels. Trends Pharmacol Sci 2010; 31:587-95. [PMID: 20951446 DOI: 10.1016/j.tips.2010.09.001] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2010] [Revised: 09/04/2010] [Accepted: 09/07/2010] [Indexed: 12/27/2022]
Abstract
The K(2P) potassium channels are responsible for the background conductance observed in several tissues. Their ubiquitous localization and thus their potential implications in diseases have led to increased research on these channels over the last few years. In this review, we outline different aspects of the research on K(2P) channels and highlight some of the latest discoveries in this area. We focus on research into K(2P) channels as potential therapeutic targets in ischemia/hypoxia, depression, memory disorders, pain, cardiovascular disease and disorders of the immune system. We address the challenge of developing novel pharmacological compounds to target these channels. We also discuss the regulation of expression of the K(2P) gene in health and disease, as well as the value of assessing the expression of K(2P) channels as potential biomarkers of disease.
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Affiliation(s)
- Zeineb Es-Salah-Lamoureux
- Department of Anesthesiology Pharmacology and Therapeutics, University of British Columbia, Vancouver, British Columbia, Canada
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22
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del Río-Espínola A, Fernández-Cadenas I, Rubiera M, Quintana M, Domingues-Montanari S, Mendióroz M, Fernández-Morales J, Giralt D, Molina CA, Alvarez-Sabín J, Montaner J. CD40-1C>T polymorphism (rs1883832) is associated with brain vessel reocclusion after fibrinolysis in ischemic stroke. Pharmacogenomics 2010; 11:763-72. [PMID: 20504251 DOI: 10.2217/pgs.10.44] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
AIMS To find genetic predictors of reocclusion after successful fibrinolytic therapy during the acute phase of ischemic stroke. PATIENTS & METHODS This was a case-case prospective study analyzing 236 polymorphisms in a cohort of 222 patients treated with tissue plasminogen activator, from which 16 patients suffered a reocclusion event (7.2%). A predictive scale was generated using independent polymorphisms with a dominant/recessive model and tandem occlusion, weighted by their beta-coefficients in logistic regression. RESULTS Using a dominant/recessive model, the rs1800801 SNP from the MGP gene (odds ratio [OR]: 15.25; 95% CI: 2.23-104.46; adjusted p = 0.006) and the rs1883832 SNP from CD40 gene (OR: 0.077; 95% CI: 0.009-0.66; adjusted p = 0.019) were independently associated with reocclusion after logistic regression adjustment by clinical predictors. In an additive model, only the rs1883832 SNP (OR: 4.43; 95% CI: 1.62-12.15; adjusted p = 0.004) was related to reocclusion occurrence. The predictive model that was generated stratified the reocclusion risk from less than 1% to more than 70%. Reocclusions were associated with neurological worsening at 24 h (patients with reocclusion: 26.7%, versus patients without reocclusion: 4.9%; p = 0.002), as it was seen for MGP -7A>G (AA: 17.2% vs AG+GG: 4.5%; p = 0.027), but not for CD40 1C>T (CC: 4.5% vs CT+TT: 7.7%; p = 0.565). There was an association between CD40 -1C>T genotype and CD40 transcriptional activity in peripheral blood mononuclear cells (median expression values TT: 65.75%, CT: 70.80%, CC: 96.00%; p = 0.023). However, CD40 soluble fraction was not a useful biomarker of reocclusion status. CONCLUSION An association was found between MGP -7A>G and CD40 -1C>T polymorphisms, and reocclusion risk. The predictive scale that was generated permits the stratification of patients by their reocclusion risk with higher accuracy than clinical parameters alone.
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Affiliation(s)
- Alberto del Río-Espínola
- Neurovascular Research Laboratory, Institut de Recerca, Hospital Vall d'Hebron, Pg Vall d'Hebron 119-129, 08035, Barcelona, Spain
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