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Mărgulescu AD, Mas-Lladó C, Prat-Gonzàlez S, Perea RJ, Borras R, Benito E, Alarcón F, Guasch E, Tolosana JM, Arbelo E, Sitges M, Brugada J, Mont L. Combined Area of Left and Right Atria May Outperform Atrial Volumes as a Predictor of Recurrences after Ablation in Patients with Persistent Atrial Fibrillation-A Pilot Study. Medicina (Kaunas) 2024; 60:151. [PMID: 38256411 PMCID: PMC10818489 DOI: 10.3390/medicina60010151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Revised: 01/04/2024] [Accepted: 01/09/2024] [Indexed: 01/24/2024]
Abstract
Background and Objectives: Left atrial (LA) remodelling and dilatation predicts atrial fibrillation (AF) recurrences after catheter ablation. However, whether right atrial (RA) remodelling and dilatation predicts AF recurrences after ablation has not been fully evaluated. Materials and Methods: This is an observational study of 85 consecutive patients (aged 57 ± 9 years; 70 [82%] men) who underwent cardiac magnetic resonance before first catheter ablation for AF (40 [47.1%] persistent AF). Four-chamber cine-sequence was selected to measure LA and RA area, and ventricular end-systolic image phase to obtain atrial 3D volumes. The effect of different variables on event-free survival was investigated using the Cox proportional hazards model. Results: In patients with persistent AF, combined LA and RA area indexed to body surface area (AILA + RA) predicted AF recurrences (HR = 1.08, 95% CI 1.00-1.17, p = 0.048). An AILA + RA cut-off value of 26.7 cm2/m2 had 72% sensitivity and 73% specificity for predicting recurrences in patients with persistent AF. In this group, 65% of patients with AILA + RA > 26.7 cm2/m2 experienced AF recurrence within 2 years of follow-up (median follow-up 11 months), compared to 25% of patients with AILA + RA ≤ 26.7 cm2/m2 (HR 4.28, 95% CI 1.50-12.22; p = 0.007). Indices of LA and RA dilatation did not predict AF recurrences in patients with paroxysmal AF. Atrial 3D volumes did not predict AF recurrences after ablation. Conclusions: In this pilot study, the simple measurement of AILA + RA may predict recurrences after ablation of persistent AF, and may outperform measurements of atrial volumes. In paroxysmal AF, atrial dilatation did not predict recurrences. Further studies on the role of RA and LA remodelling are needed.
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Affiliation(s)
| | - Caterina Mas-Lladó
- Unitat de Fibril·lació Auricular (UFA), Hospital Clinic, Universitat de Barcelona, 08036 Barcelona, Spain; (C.M.-L.); (L.M.)
| | - Susanna Prat-Gonzàlez
- Unitat de Fibril·lació Auricular (UFA), Hospital Clinic, Universitat de Barcelona, 08036 Barcelona, Spain; (C.M.-L.); (L.M.)
- Institut d’Investigació Biomèdica August Pi i Sunyer (IDIBAPS), 08036 Barcelona, Spain
| | - Rosario Jesus Perea
- Unitat de Fibril·lació Auricular (UFA), Hospital Clinic, Universitat de Barcelona, 08036 Barcelona, Spain; (C.M.-L.); (L.M.)
- Institut d’Investigació Biomèdica August Pi i Sunyer (IDIBAPS), 08036 Barcelona, Spain
| | - Roger Borras
- Unitat de Fibril·lació Auricular (UFA), Hospital Clinic, Universitat de Barcelona, 08036 Barcelona, Spain; (C.M.-L.); (L.M.)
- Institut d’Investigació Biomèdica August Pi i Sunyer (IDIBAPS), 08036 Barcelona, Spain
| | - Eva Benito
- Unitat de Fibril·lació Auricular (UFA), Hospital Clinic, Universitat de Barcelona, 08036 Barcelona, Spain; (C.M.-L.); (L.M.)
- Institut d’Investigació Biomèdica August Pi i Sunyer (IDIBAPS), 08036 Barcelona, Spain
| | - Francisco Alarcón
- Unitat de Fibril·lació Auricular (UFA), Hospital Clinic, Universitat de Barcelona, 08036 Barcelona, Spain; (C.M.-L.); (L.M.)
- Institut d’Investigació Biomèdica August Pi i Sunyer (IDIBAPS), 08036 Barcelona, Spain
| | - Eduard Guasch
- Unitat de Fibril·lació Auricular (UFA), Hospital Clinic, Universitat de Barcelona, 08036 Barcelona, Spain; (C.M.-L.); (L.M.)
- Institut d’Investigació Biomèdica August Pi i Sunyer (IDIBAPS), 08036 Barcelona, Spain
| | - Jose María Tolosana
- Unitat de Fibril·lació Auricular (UFA), Hospital Clinic, Universitat de Barcelona, 08036 Barcelona, Spain; (C.M.-L.); (L.M.)
- Institut d’Investigació Biomèdica August Pi i Sunyer (IDIBAPS), 08036 Barcelona, Spain
- Centro de Investigación Biomédica en Red (CIBER Cardiovascular), 08036 Barcelona, Spain
| | - Elena Arbelo
- Unitat de Fibril·lació Auricular (UFA), Hospital Clinic, Universitat de Barcelona, 08036 Barcelona, Spain; (C.M.-L.); (L.M.)
- Institut d’Investigació Biomèdica August Pi i Sunyer (IDIBAPS), 08036 Barcelona, Spain
- Centro de Investigación Biomédica en Red (CIBER Cardiovascular), 08036 Barcelona, Spain
| | - Marta Sitges
- Institut d’Investigació Biomèdica August Pi i Sunyer (IDIBAPS), 08036 Barcelona, Spain
- Centro de Investigación Biomédica en Red (CIBER Cardiovascular), 08036 Barcelona, Spain
| | - Josep Brugada
- Unitat de Fibril·lació Auricular (UFA), Hospital Clinic, Universitat de Barcelona, 08036 Barcelona, Spain; (C.M.-L.); (L.M.)
- Institut d’Investigació Biomèdica August Pi i Sunyer (IDIBAPS), 08036 Barcelona, Spain
- Centro de Investigación Biomédica en Red (CIBER Cardiovascular), 08036 Barcelona, Spain
| | - Lluís Mont
- Unitat de Fibril·lació Auricular (UFA), Hospital Clinic, Universitat de Barcelona, 08036 Barcelona, Spain; (C.M.-L.); (L.M.)
- Institut d’Investigació Biomèdica August Pi i Sunyer (IDIBAPS), 08036 Barcelona, Spain
- Centro de Investigación Biomédica en Red (CIBER Cardiovascular), 08036 Barcelona, Spain
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2
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Jeong H, Grimes K, Rauwolf KK, Bruch PM, Rausch T, Hasenfeld P, Benito E, Roider T, Sabarinathan R, Porubsky D, Herbst SA, Erarslan-Uysal B, Jann JC, Marschall T, Nowak D, Bourquin JP, Kulozik AE, Dietrich S, Bornhauser B, Sanders AD, Korbel JO. Functional analysis of structural variants in single cells using Strand-seq. Nat Biotechnol 2022:10.1038/s41587-022-01551-4. [PMID: 36424487 DOI: 10.1038/s41587-022-01551-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Accepted: 10/07/2022] [Indexed: 11/27/2022]
Abstract
Somatic structural variants (SVs) are widespread in cancer, but their impact on disease evolution is understudied due to a lack of methods to directly characterize their functional consequences. We present a computational method, scNOVA, which uses Strand-seq to perform haplotype-aware integration of SV discovery and molecular phenotyping in single cells by using nucleosome occupancy to infer gene expression as a readout. Application to leukemias and cell lines identifies local effects of copy-balanced rearrangements on gene deregulation, and consequences of SVs on aberrant signaling pathways in subclones. We discovered distinct SV subclones with dysregulated Wnt signaling in a chronic lymphocytic leukemia patient. We further uncovered the consequences of subclonal chromothripsis in T cell acute lymphoblastic leukemia, which revealed c-Myb activation, enrichment of a primitive cell state and informed successful targeting of the subclone in cell culture, using a Notch inhibitor. By directly linking SVs to their functional effects, scNOVA enables systematic single-cell multiomic studies of structural variation in heterogeneous cell populations.
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Affiliation(s)
- Hyobin Jeong
- Genome Biology Unit, European Molecular Biology Laboratory (EMBL), Heidelberg, Germany.,Hanyang Institute of Bioscience and Biotechnology, Hanyang University, Seoul, Republic of Korea
| | - Karen Grimes
- Genome Biology Unit, European Molecular Biology Laboratory (EMBL), Heidelberg, Germany.,Faculty of Biosciences, EMBL and Heidelberg University, Heidelberg, Germany
| | - Kerstin K Rauwolf
- Division of Pediatric Oncology, University Children's Hospital, Zürich, Switzerland
| | - Peter-Martin Bruch
- Department of Hematology, Oncology and Rheumatology, Heidelberg University Hospital, Heidelberg, Germany.,Molecular Medicine Partnership Unit, European Molecular Biology Laboratory, University of Heidelberg, Heidelberg, Germany.,Department of Hematology and Oncology, University Hospital Düsseldorf, Düsseldorf, Germany
| | - Tobias Rausch
- Genome Biology Unit, European Molecular Biology Laboratory (EMBL), Heidelberg, Germany.,Molecular Medicine Partnership Unit, European Molecular Biology Laboratory, University of Heidelberg, Heidelberg, Germany
| | - Patrick Hasenfeld
- Genome Biology Unit, European Molecular Biology Laboratory (EMBL), Heidelberg, Germany
| | - Eva Benito
- Genome Biology Unit, European Molecular Biology Laboratory (EMBL), Heidelberg, Germany
| | - Tobias Roider
- Genome Biology Unit, European Molecular Biology Laboratory (EMBL), Heidelberg, Germany.,Department of Hematology, Oncology and Rheumatology, Heidelberg University Hospital, Heidelberg, Germany.,Molecular Medicine Partnership Unit, European Molecular Biology Laboratory, University of Heidelberg, Heidelberg, Germany
| | | | - David Porubsky
- Center for Bioinformatics, Saarland University, Saarbrücken, Germany.,Max Planck Institute for Informatics, Saarbrücken, Germany.,Department of Genome Sciences, University of Washington School of Medicine, Seattle, WA, USA
| | - Sophie A Herbst
- Department of Hematology, Oncology and Rheumatology, Heidelberg University Hospital, Heidelberg, Germany.,Molecular Medicine Partnership Unit, European Molecular Biology Laboratory, University of Heidelberg, Heidelberg, Germany
| | - Büşra Erarslan-Uysal
- Molecular Medicine Partnership Unit, European Molecular Biology Laboratory, University of Heidelberg, Heidelberg, Germany.,Department of Pediatric Oncology, Hematology, and Immunology, University of Heidelberg and Hopp Children's Cancer Center, Heidelberg, Germany
| | - Johann-Christoph Jann
- Department of Hematology and Oncology, Medical Faculty Mannheim of the Heidelberg University, Heidelberg, Germany
| | - Tobias Marschall
- Institute for Medical Biometry and Bioinformatics, Medical Faculty, Heinrich Heine University, Düsseldorf, Germany
| | - Daniel Nowak
- Department of Hematology and Oncology, Medical Faculty Mannheim of the Heidelberg University, Heidelberg, Germany
| | - Jean-Pierre Bourquin
- Division of Pediatric Oncology, University Children's Hospital, Zürich, Switzerland
| | - Andreas E Kulozik
- Molecular Medicine Partnership Unit, European Molecular Biology Laboratory, University of Heidelberg, Heidelberg, Germany.,Department of Pediatric Oncology, Hematology, and Immunology, University of Heidelberg and Hopp Children's Cancer Center, Heidelberg, Germany
| | - Sascha Dietrich
- Department of Hematology, Oncology and Rheumatology, Heidelberg University Hospital, Heidelberg, Germany.,Molecular Medicine Partnership Unit, European Molecular Biology Laboratory, University of Heidelberg, Heidelberg, Germany.,Department of Hematology and Oncology, University Hospital Düsseldorf, Düsseldorf, Germany.,Department of Translational Medical Oncology, National Center for Tumor Diseases (NCT) Heidelberg and German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Beat Bornhauser
- Division of Pediatric Oncology, University Children's Hospital, Zürich, Switzerland
| | - Ashley D Sanders
- Genome Biology Unit, European Molecular Biology Laboratory (EMBL), Heidelberg, Germany. .,Berlin Institute for Medical Systems Biology, Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC), Berlin, Germany. .,Berlin Institute of Health (BIH), Berlin, Germany. .,Charité-Universitätsmedizin, Berlin, Germany.
| | - Jan O Korbel
- Genome Biology Unit, European Molecular Biology Laboratory (EMBL), Heidelberg, Germany. .,Molecular Medicine Partnership Unit, European Molecular Biology Laboratory, University of Heidelberg, Heidelberg, Germany. .,Bridging Research Division on Mechanisms of Genomic Variation and Data Science, German Cancer Research Center (DKFZ), Heidelberg, Germany.
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3
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Porubsky D, Höps W, Ashraf H, Hsieh P, Rodriguez-Martin B, Yilmaz F, Ebler J, Hallast P, Maria Maggiolini FA, Harvey WT, Henning B, Audano PA, Gordon DS, Ebert P, Hasenfeld P, Benito E, Zhu Q, Lee C, Antonacci F, Steinrücken M, Beck CR, Sanders AD, Marschall T, Eichler EE, Korbel JO. Recurrent inversion polymorphisms in humans associate with genetic instability and genomic disorders. Cell 2022; 185:1986-2005.e26. [PMID: 35525246 PMCID: PMC9563103 DOI: 10.1016/j.cell.2022.04.017] [Citation(s) in RCA: 41] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Revised: 02/14/2022] [Accepted: 04/08/2022] [Indexed: 12/13/2022]
Abstract
Unlike copy number variants (CNVs), inversions remain an underexplored genetic variation class. By integrating multiple genomic technologies, we discover 729 inversions in 41 human genomes. Approximately 85% of inversions <2 kbp form by twin-priming during L1 retrotransposition; 80% of the larger inversions are balanced and affect twice as many nucleotides as CNVs. Balanced inversions show an excess of common variants, and 72% are flanked by segmental duplications (SDs) or retrotransposons. Since flanking repeats promote non-allelic homologous recombination, we developed complementary approaches to identify recurrent inversion formation. We describe 40 recurrent inversions encompassing 0.6% of the genome, showing inversion rates up to 2.7 × 10-4 per locus per generation. Recurrent inversions exhibit a sex-chromosomal bias and co-localize with genomic disorder critical regions. We propose that inversion recurrence results in an elevated number of heterozygous carriers and structural SD diversity, which increases mutability in the population and predisposes specific haplotypes to disease-causing CNVs.
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4
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Vallès E, Martí-Almor J, Grau N, Casteigt B, Benito B, Cabrera S, Alcalde O, Benito E, Bas D, Conejos J, Cabero P, Soler C, Duran X, Fan R, Jimenez J. Influence of PACE score and conduction disturbances in the incidence of early new onset atrial fibrillation after typical atrial flutter ablation. J Cardiol 2021; 79:417-422. [PMID: 34774385 DOI: 10.1016/j.jjcc.2021.10.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 09/25/2021] [Accepted: 10/05/2021] [Indexed: 10/19/2022]
Abstract
PURPOSE Patients undergoing cavotricuspid isthmus (CTI) ablation for typical flutter (AFL) have a high incidence of new onset atrial fibrillation (AF). We aimed to analyze the influence of PACE score to predict new onset AF in this subset of patients to stratify thromboembolic risk. METHODS Between 2017 and 2019, patients undergoing CTI ablation for AFL and without history of AF were prospectively included. All patients were monitored continuously by implantable loop recorder and followed by remote monitoring. RESULTS Overall 48 patients were included. New onset AF rate at 12 months was 56.3%. We observed two very strong independent predictors for new onset AF: a PACE score ≥ 30 (HR:6.9; 95% CI:1.71-27.91; p = 0.007) and an HV interval ≥ 55 (HR:11.86; 95% CI:2.57-54.8; p = 0.002). CONCLUSIONS The incidence of newly diagnosed AF is high in patients with AFL after CTI ablation, and can occur early. A high PACE score and/or long HV interval predict even higher risk, and may be useful in the decision for empiric long-term anticoagulation.
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Affiliation(s)
- Ermengol Vallès
- Electrophysiology Unit, Cardiology Department, Hospital del Mar, Universitat Autònoma de Barcelona, 25-27 Passeig marítim de la Barceloneta, Barcelona 08003, Spain; Institut Hospital del Mar Investigacions Mèdiques (IMIM), Barcelona, Spain.
| | - Julio Martí-Almor
- Electrophysiology Unit, Cardiology Department, Hospital del Mar, Universitat Autònoma de Barcelona, 25-27 Passeig marítim de la Barceloneta, Barcelona 08003, Spain; Institut Hospital del Mar Investigacions Mèdiques (IMIM), Barcelona, Spain
| | - Nuria Grau
- Electrophysiology Unit, Cardiology Department, Hospital del Mar, Universitat Autònoma de Barcelona, 25-27 Passeig marítim de la Barceloneta, Barcelona 08003, Spain; Institut Hospital del Mar Investigacions Mèdiques (IMIM), Barcelona, Spain
| | - Benjamin Casteigt
- Electrophysiology Unit, Cardiology Department, Hospital del Mar, Universitat Autònoma de Barcelona, 25-27 Passeig marítim de la Barceloneta, Barcelona 08003, Spain; Institut Hospital del Mar Investigacions Mèdiques (IMIM), Barcelona, Spain
| | - Begoña Benito
- Electrophysiology Unit, Cardiology Department, Hospital del Mar, Universitat Autònoma de Barcelona, 25-27 Passeig marítim de la Barceloneta, Barcelona 08003, Spain; Institut Hospital del Mar Investigacions Mèdiques (IMIM), Barcelona, Spain
| | - Sandra Cabrera
- Electrophysiology Unit, Cardiology Department, Hospital del Mar, Universitat Autònoma de Barcelona, 25-27 Passeig marítim de la Barceloneta, Barcelona 08003, Spain; Institut Hospital del Mar Investigacions Mèdiques (IMIM), Barcelona, Spain
| | - Oscar Alcalde
- Electrophysiology Unit, Cardiology Department, Hospital del Mar, Universitat Autònoma de Barcelona, 25-27 Passeig marítim de la Barceloneta, Barcelona 08003, Spain; Institut Hospital del Mar Investigacions Mèdiques (IMIM), Barcelona, Spain
| | - Eva Benito
- Electrophysiology Unit, Cardiology Department, Hospital del Mar, Universitat Autònoma de Barcelona, 25-27 Passeig marítim de la Barceloneta, Barcelona 08003, Spain; Institut Hospital del Mar Investigacions Mèdiques (IMIM), Barcelona, Spain
| | - Deva Bas
- Electrophysiology Unit, Cardiology Department, Hospital del Mar, Universitat Autònoma de Barcelona, 25-27 Passeig marítim de la Barceloneta, Barcelona 08003, Spain; Institut Hospital del Mar Investigacions Mèdiques (IMIM), Barcelona, Spain
| | - Javi Conejos
- Electrophysiology Unit, Cardiology Department, Hospital del Mar, Universitat Autònoma de Barcelona, 25-27 Passeig marítim de la Barceloneta, Barcelona 08003, Spain; Institut Hospital del Mar Investigacions Mèdiques (IMIM), Barcelona, Spain
| | - Paula Cabero
- Electrophysiology Unit, Cardiology Department, Hospital del Mar, Universitat Autònoma de Barcelona, 25-27 Passeig marítim de la Barceloneta, Barcelona 08003, Spain; Institut Hospital del Mar Investigacions Mèdiques (IMIM), Barcelona, Spain
| | - Cristina Soler
- Electrophysiology Unit, Cardiology Department, Hospital del Mar, Universitat Autònoma de Barcelona, 25-27 Passeig marítim de la Barceloneta, Barcelona 08003, Spain; Institut Hospital del Mar Investigacions Mèdiques (IMIM), Barcelona, Spain
| | - Xavier Duran
- Institut Hospital del Mar Investigacions Mèdiques (IMIM), Barcelona, Spain
| | - Roger Fan
- Stony Brook University School of Medicine, Stony Brook, NY, USA
| | - Jesus Jimenez
- Electrophysiology Unit, Cardiology Department, Hospital del Mar, Universitat Autònoma de Barcelona, 25-27 Passeig marítim de la Barceloneta, Barcelona 08003, Spain; Institut Hospital del Mar Investigacions Mèdiques (IMIM), Barcelona, Spain
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5
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Islam MR, Kaurani L, Berulava T, Heilbronner U, Budde M, Centeno TP, Elerdashvili V, Zafieriou M, Benito E, Sertel SM, Goldberg M, Senner F, Kalman JL, Burkhardt S, Oepen AS, Sakib MS, Kerimoglu C, Wirths O, Bickeböller H, Bartels C, Brosseron F, Buerger K, Cosma N, Fliessbach K, Heneka MT, Janowitz D, Kilimann I, Kleinedam L, Laske C, Metzger CD, Munk MH, Perneczky R, Peters O, Priller J, Rauchmann BS, Roy N, Schneider A, Spottke A, Spruth EJ, Teipel S, Tscheuschler M, Wagner M, Wiltfang J, Düzel E, Jessen F, Rizzoli SO, Zimmermann W, Schulze TG, Falkai P, Sananbenesi F, Fischer A. A microRNA signature that correlates with cognition and is a target against cognitive decline. EMBO Mol Med 2021; 13:e13659. [PMID: 34633146 PMCID: PMC8573587 DOI: 10.15252/emmm.202013659] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Revised: 08/23/2021] [Accepted: 08/24/2021] [Indexed: 12/25/2022] Open
Abstract
While some individuals age without pathological memory impairments, others develop age-associated cognitive diseases. Since changes in cognitive function develop slowly over time in these patients, they are often diagnosed at an advanced stage of molecular pathology, a time point when causative treatments fail. Thus, there is great need for the identification of inexpensive and minimal invasive approaches that could be used for screening with the aim to identify individuals at risk for cognitive decline that can then undergo further diagnostics and eventually stratified therapies. In this study, we use an integrative approach combining the analysis of human data and mechanistic studies in model systems to identify a circulating 3-microRNA signature that reflects key processes linked to neural homeostasis and inform about cognitive status. We furthermore provide evidence that expression changes in this signature represent multiple mechanisms deregulated in the aging and diseased brain and are a suitable target for RNA therapeutics.
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6
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Jiménez-López J, Vallès E, Martí-Almor J, Casteigt B, Villuendas R, Bisbal F, Sarrias A, Benito E, Trucco E, Conejos J, Alcalde O, Figueras-Mari L, Fan R, Bazan V. Merged two-way mapping technique: an alternative 3D electroanatomical mapping approach to guide challenging ablation procedures of accessory pathways with bidirectional conduction properties. J Interv Card Electrophysiol 2021; 63:591-599. [PMID: 34595692 DOI: 10.1007/s10840-021-01069-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Accepted: 09/22/2021] [Indexed: 10/20/2022]
Abstract
BACKGROUND Catheter ablation of accessory pathways (AP) with bidirectional conduction may be challenging due to issues related to anatomical course or location. OBJECTIVE We describe an alternative electro-anatomical mapping technique which aims at depicting the entire anatomic course of the AP from the atrial toward the ventricular insertion in order to guide catheter ablation. METHODS Twenty consecutive patients with confirmed bidirectional AP conduction and at least one previous ablation procedure or para-Hisian location were included. 3-D electro-anatomical mapping was used to depict the merged 10-ms isochrone area of maximum early activation of both the ventricular and atrial signals during sinus rhythm and ventricular pacing/orthodromic tachycardia, respectively. Catheter ablation was performed within the depicted earliest isochrone area. RESULTS Acute bidirectional AP conduction block was achieved in all patients 4.2 ± 1.7 s after the first radiofrequency energy pulse was delivered, without reconnection during a 30 ± 10 min post-ablation observation time. No procedural complications were seen. After a mean follow-up period of 9 ± 7 months (range 3 to 16), no recurrences were documented. CONCLUSION This merged two-way mapping technique is a safe, efficient, and effective technique for ablation of APs with bidirectional conduction.
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Affiliation(s)
- Jesús Jiménez-López
- Electrophysiology Unit, Cardiovascular Division, Department of Medicine, Hospital del Mar, Universitat Autònoma de Barcelona, 25-27 Passeig Marítim, 08003, Barcelona, Spain.
| | - Ermengol Vallès
- Electrophysiology Unit, Cardiovascular Division, Department of Medicine, Hospital del Mar, Universitat Autònoma de Barcelona, 25-27 Passeig Marítim, 08003, Barcelona, Spain
| | - Julio Martí-Almor
- Electrophysiology Unit, Cardiovascular Division, Department of Medicine, Hospital del Mar, Universitat Autònoma de Barcelona, 25-27 Passeig Marítim, 08003, Barcelona, Spain
| | - Benjamin Casteigt
- Electrophysiology Unit, Cardiovascular Division, Department of Medicine, Hospital del Mar, Universitat Autònoma de Barcelona, 25-27 Passeig Marítim, 08003, Barcelona, Spain
| | - Roger Villuendas
- Electrophysiology Unit, Cardiology Department, Hospital Universitari Germans Trias I Pujol, Badalona, Spain
| | - Felipe Bisbal
- Electrophysiology Unit, Cardiology Department, Hospital Universitari Germans Trias I Pujol, Badalona, Spain.,Centro de Investigación Biomédica en Red (CIBERCV), Madrid, Spain
| | - Axel Sarrias
- Electrophysiology Unit, Cardiology Department, Hospital Universitari Germans Trias I Pujol, Badalona, Spain
| | - Eva Benito
- Electrophysiology Unit, Cardiology Department, Hospital Universitari Dr. Josep Trueta, Girona, Spain
| | - Emilce Trucco
- Electrophysiology Unit, Cardiology Department, Hospital Universitari Dr. Josep Trueta, Girona, Spain
| | - Javier Conejos
- Electrophysiology Unit, Cardiology Department, Hospital Universitari Dr. Josep Trueta, Girona, Spain
| | - Oscar Alcalde
- Arrhythmia Unit, Cardiology Department, Complejo Hospitalario de Navarra, Navarra, Spain
| | | | - Roger Fan
- Electrophysiology Unit, Cardiology Department, Stony Brook Heart Institute, Stony Brook, NY, USA
| | - Victor Bazan
- Electrophysiology Unit, Cardiology Department, Hospital Universitari Germans Trias I Pujol, Badalona, Spain
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7
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Arbelo E, Angera I, Trucco E, Rivas-Gándara N, Guerra JM, Bisbal F, Jáuregui-Abularach M, Vallés E, Martin G, Sbraga F, Tolosana JM, Linhart M, Francisco-Pascual J, Montiel-Serrano J, Pereferrer D, Menéndez-Ramírez D, Jiménez J, Elamrani A, Borrás R, Dallaglio PD, Benito E, Santos-Ortega A, Rodríguez-Font E, Sarrias A, González-Matos CE, Martí-Almor J, Cabrera S, Mont L. Reduction in new cardiac electronic device implantations in Catalonia during COVID-19. Europace 2021; 23:456-463. [PMID: 33595062 PMCID: PMC7928966 DOI: 10.1093/europace/euab011] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Accepted: 01/13/2021] [Indexed: 12/27/2022] Open
Abstract
Aims During the COVID-19 pandemic, concern regarding its effect on the management of non-communicable diseases has been raised. However, there are no data on the impact on cardiac implantable electronic devices (CIED) implantation rates. We aimed to determine the impact of SARS-CoV2 on the monthly incidence rates and type of pacemaker (PM) and implantable cardiac defibrillator (ICD) implantations in Catalonia before and after the declaration of the state of alarm in Spain on 14 March 2020. Methods and results Data on new CIED implantations for 2017–20 were prospectively collected by nine hospitals in Catalonia. A mixed model with random intercepts corrected for time was used to estimate the change in monthly CIED implantations. Compared to the pre-COVID-19 period, an absolute decrease of 56.5% was observed (54.7% in PM and 63.7% in ICD) in CIED implantation rates. Total CIED implantations for 2017–19 and January and February 2020 was 250/month (>195 PM and >55 ICD), decreasing to 207 (161 PM and 46 ICD) in March and 131 (108 PM and 23 ICD) in April 2020. In April 2020, there was a significant fall of 185.25 CIED implantations compared to 2018 [95% confidence interval (CI) 129.6–240.9; P < 0.001] and of 188 CIED compared to 2019 (95% CI 132.3–243.7; P < 0.001). No significant differences in the type of PM or ICD were observed, nor in the indication for primary or secondary prevention. Conclusions During the first wave of the COVID-19 pandemic, a substantial decrease in CIED implantations was observed in Catalonia. Our findings call for measures to avoid long-term social impact.
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Affiliation(s)
- Elena Arbelo
- Arrhythmia Section, Cardiology Department, Hospital Clínic, Universitat de Barcelona, Barcelona, Spain.,Institut d'Investigació August Pi iSunyer (IDIBAPS), Barcelona, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), Madrid, Spain
| | - Ignasi Angera
- Arrhythmia Section, Cardiology Department, Hospital Universitari de Bellvitge, Barcelona, Spain.,Institut d'Investigació Biomèdica de Bellvitge (IDIBELL), Spain
| | - Emilce Trucco
- Arrhythmia Section, Cardiology Department, Hospital Universitari Doctor Josep Trueta. Girona, Spain.,Institut d'Investigació Biomèdica de Girona (IDIBGI), Girona, Spain
| | - Nuria Rivas-Gándara
- Arrhythmia Unit, Department of Cardiology, Hospital Universitari Vall d'Hebron, Universitat Autònoma de Barcelona, Barcelona, Spain.,Vall d'Hebron Institut de Recerca (VHIR), Centro de investigación biomédica en red de enfermedades cardiovasculares (CIBER-CV), Barcelona, Spain
| | - José M Guerra
- Arrhythmia Unit, Department of Cardiology, Hospital de la Santa Creu i Sant Pau, CIBER-CV, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Felipe Bisbal
- Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), Madrid, Spain.,Arrhythmia Section, Cardiology Department, Heart Institute (iCOR), University Hospital Germans Trias i Pujol, Badalona, Spain.,Fundació Institut d'Investigació en Ciències de la Salut Germans Trias i Pujol (IGTP), Badalona, Spain
| | - Miguel Jáuregui-Abularach
- Arrhythmia Unit, Department of Cardiology, Hospital Universitari Arnau de Vilanova, Lleida, Spain.,Institut de Recerca Biomèdica de Lleida Fundació Dr Pifarré (IRBLleida), Lleida, Spain
| | - Ermengol Vallés
- Arrhythmia Section, Cardiology Department, Hospital del Mar-IMIM. Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Gabriel Martin
- Arrhythmia Section, Cardiology Department, Hospital Joan XXIII, Universitat Rovira i Virgili, Tarragona, Spain.,IISPV, Institut d'Investigació Sanitària Pere Virgili, Tarragona, Spain
| | - Fabrizio Sbraga
- Department of Cardiac Surgery, Hospital Universitari de Bellvitge, Barcelona, Spain
| | - José María Tolosana
- Arrhythmia Section, Cardiology Department, Hospital Clínic, Universitat de Barcelona, Barcelona, Spain.,Institut d'Investigació August Pi iSunyer (IDIBAPS), Barcelona, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), Madrid, Spain
| | - Markus Linhart
- Arrhythmia Section, Cardiology Department, Hospital Universitari Doctor Josep Trueta. Girona, Spain.,Institut d'Investigació Biomèdica de Girona (IDIBGI), Girona, Spain
| | - Jaume Francisco-Pascual
- Arrhythmia Unit, Department of Cardiology, Hospital Universitari Vall d'Hebron, Universitat Autònoma de Barcelona, Barcelona, Spain.,Vall d'Hebron Institut de Recerca (VHIR), Centro de investigación biomédica en red de enfermedades cardiovasculares (CIBER-CV), Barcelona, Spain
| | - José Montiel-Serrano
- Arrhythmia Unit, Department of Cardiology, Hospital de la Santa Creu i Sant Pau, CIBER-CV, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Damià Pereferrer
- Arrhythmia Section, Cardiology Department, Heart Institute (iCOR), University Hospital Germans Trias i Pujol, Badalona, Spain.,Fundació Institut d'Investigació en Ciències de la Salut Germans Trias i Pujol (IGTP), Badalona, Spain
| | - Diego Menéndez-Ramírez
- Arrhythmia Unit, Department of Cardiology, Hospital Universitari Arnau de Vilanova, Lleida, Spain.,Institut de Recerca Biomèdica de Lleida Fundació Dr Pifarré (IRBLleida), Lleida, Spain
| | - Jesús Jiménez
- Arrhythmia Section, Cardiology Department, Hospital del Mar-IMIM. Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Amin Elamrani
- Arrhythmia Section, Cardiology Department, Hospital Joan XXIII, Universitat Rovira i Virgili, Tarragona, Spain.,IISPV, Institut d'Investigació Sanitària Pere Virgili, Tarragona, Spain
| | - Roger Borrás
- Arrhythmia Section, Cardiology Department, Hospital Clínic, Universitat de Barcelona, Barcelona, Spain.,Institut d'Investigació August Pi iSunyer (IDIBAPS), Barcelona, Spain
| | - Paolo Domenico Dallaglio
- Arrhythmia Section, Cardiology Department, Hospital Universitari de Bellvitge, Barcelona, Spain.,Institut d'Investigació Biomèdica de Bellvitge (IDIBELL), Spain
| | - Eva Benito
- Arrhythmia Section, Cardiology Department, Hospital Universitari Doctor Josep Trueta. Girona, Spain.,Institut d'Investigació Biomèdica de Girona (IDIBGI), Girona, Spain
| | - Alba Santos-Ortega
- Arrhythmia Unit, Department of Cardiology, Hospital Universitari Vall d'Hebron, Universitat Autònoma de Barcelona, Barcelona, Spain.,Vall d'Hebron Institut de Recerca (VHIR), Centro de investigación biomédica en red de enfermedades cardiovasculares (CIBER-CV), Barcelona, Spain
| | - Enrique Rodríguez-Font
- Arrhythmia Unit, Department of Cardiology, Hospital de la Santa Creu i Sant Pau, CIBER-CV, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Axel Sarrias
- Arrhythmia Section, Cardiology Department, Heart Institute (iCOR), University Hospital Germans Trias i Pujol, Badalona, Spain.,Fundació Institut d'Investigació en Ciències de la Salut Germans Trias i Pujol (IGTP), Badalona, Spain
| | - Carlos E González-Matos
- Arrhythmia Unit, Department of Cardiology, Hospital Universitari Arnau de Vilanova, Lleida, Spain.,Institut de Recerca Biomèdica de Lleida Fundació Dr Pifarré (IRBLleida), Lleida, Spain
| | - Julio Martí-Almor
- Arrhythmia Section, Cardiology Department, Hospital del Mar-IMIM. Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Sandra Cabrera
- Arrhythmia Section, Cardiology Department, Hospital Joan XXIII, Universitat Rovira i Virgili, Tarragona, Spain.,IISPV, Institut d'Investigació Sanitària Pere Virgili, Tarragona, Spain
| | - Lluis Mont
- Arrhythmia Section, Cardiology Department, Hospital Clínic, Universitat de Barcelona, Barcelona, Spain.,Institut d'Investigació August Pi iSunyer (IDIBAPS), Barcelona, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), Madrid, Spain
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8
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Bisbal F, Benito E, Teis A, Alarcón F, Sarrias A, Caixal G, Villuendas R, Garre P, Soto N, Cozzari J, Guasch E, Juncà G, Prat-Gonzalez S, Perea RJ, Bazán V, Tolosana JM, Arbelo E, Bayés-Genís A, Mont L. Magnetic Resonance Imaging-Guided Fibrosis Ablation for the Treatment of Atrial Fibrillation. Circ Arrhythm Electrophysiol 2020; 13:e008707. [DOI: 10.1161/circep.120.008707] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background:
Myocardial fibrosis is key for atrial fibrillation maintenance. We aimed to test the efficacy of ablating cardiac magnetic resonance (CMR)-detected atrial fibrosis plus pulmonary vein isolation (PVI).
Methods:
This was an open-label, parallel-group, randomized, controlled trial. Patients with symptomatic drug-refractory atrial fibrillation (paroxysmal and persistent) undergoing first or repeat ablation were randomized in a 1:1 basis to receive PVI plus CMR-guided fibrosis ablation (CMR group) or PVI alone (PVI-alone group). The primary end point was the rate of recurrence (>30 seconds) at 12 months of follow-up using a 12-lead ECG and Holter monitoring at 3, 6, and 12 months. The analysis was conducted by intention-to-treat.
Results:
In total, 155 patients (71% male, age 59±10, CHA
2
DS
2
-VASc 1.3±1.1, 54% paroxysmal atrial fibrillation) were allocated to the PVI-alone group (N=76) or CMR group (N=79). First ablation was performed in 80% and 71% of patients in the PVI-alone and CMR groups, respectively. The mean atrial fibrosis burden was 12% (only ≈50% of patients had fibrosis outside the pulmonary vein area). One hundred percent and 99% of patients received the assigned intervention in the PVI-alone and CMR group, respectively. The primary outcome was achieved in 21 patients (27.6%) in the PVI-alone group and 22 patients (27.8%) in the CMR group (odds ratio: 1.01 [95% CI, 0.50–2.04];
P
=0.976). There were no differences in the rate of adverse events (3 in the CMR group and 2 in the PVI-alone group;
P
=0.68).
Conclusions:
A pragmatic ablation approach targeting CMR-detected atrial fibrosis plus PVI was not more effective than PVI alone in an unselected population undergoing atrial fibrillation ablation with low fibrosis burden.
Registration:
URL:
https://www.clinicaltrials.gov
. Unique identifier: NCT02698631.
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Affiliation(s)
- Felipe Bisbal
- Heart Institute (iCor), University Hospital Germans Trias i Pujol, Badalona, Catalonia (F.B., A.T., A.S., R.V., N.S., G.J., V.B., A.B.-G.)
- CIBERCV, Instituto de Salud Carlos III, Madrid (F.B., A.B.-G., L.M.)
| | - Eva Benito
- Cardiovascular Institute, Hospital Clinic, University of Barcelona, Spain (E.B., F.A., G.C., P.G., J.C., E.G., S.P.-G., R.J.P., J.M.T., E.A., L.M.)
| | - Albert Teis
- Heart Institute (iCor), University Hospital Germans Trias i Pujol, Badalona, Catalonia (F.B., A.T., A.S., R.V., N.S., G.J., V.B., A.B.-G.)
| | - Francisco Alarcón
- Cardiovascular Institute, Hospital Clinic, University of Barcelona, Spain (E.B., F.A., G.C., P.G., J.C., E.G., S.P.-G., R.J.P., J.M.T., E.A., L.M.)
| | - Axel Sarrias
- Heart Institute (iCor), University Hospital Germans Trias i Pujol, Badalona, Catalonia (F.B., A.T., A.S., R.V., N.S., G.J., V.B., A.B.-G.)
| | - Gala Caixal
- Cardiovascular Institute, Hospital Clinic, University of Barcelona, Spain (E.B., F.A., G.C., P.G., J.C., E.G., S.P.-G., R.J.P., J.M.T., E.A., L.M.)
| | - Roger Villuendas
- Heart Institute (iCor), University Hospital Germans Trias i Pujol, Badalona, Catalonia (F.B., A.T., A.S., R.V., N.S., G.J., V.B., A.B.-G.)
| | - Paz Garre
- Cardiovascular Institute, Hospital Clinic, University of Barcelona, Spain (E.B., F.A., G.C., P.G., J.C., E.G., S.P.-G., R.J.P., J.M.T., E.A., L.M.)
| | - Nina Soto
- Heart Institute (iCor), University Hospital Germans Trias i Pujol, Badalona, Catalonia (F.B., A.T., A.S., R.V., N.S., G.J., V.B., A.B.-G.)
| | - Jennifer Cozzari
- Cardiovascular Institute, Hospital Clinic, University of Barcelona, Spain (E.B., F.A., G.C., P.G., J.C., E.G., S.P.-G., R.J.P., J.M.T., E.A., L.M.)
| | - Eduard Guasch
- Cardiovascular Institute, Hospital Clinic, University of Barcelona, Spain (E.B., F.A., G.C., P.G., J.C., E.G., S.P.-G., R.J.P., J.M.T., E.A., L.M.)
- Institut d’Investigació Biomèdica August Pi I Sunyer (IDIBAPS), Barcelona, Catalonia, Spain (E.G, L.M.)
| | - Gladys Juncà
- Heart Institute (iCor), University Hospital Germans Trias i Pujol, Badalona, Catalonia (F.B., A.T., A.S., R.V., N.S., G.J., V.B., A.B.-G.)
| | - Susanna Prat-Gonzalez
- Cardiovascular Institute, Hospital Clinic, University of Barcelona, Spain (E.B., F.A., G.C., P.G., J.C., E.G., S.P.-G., R.J.P., J.M.T., E.A., L.M.)
| | - Rosario J. Perea
- Cardiovascular Institute, Hospital Clinic, University of Barcelona, Spain (E.B., F.A., G.C., P.G., J.C., E.G., S.P.-G., R.J.P., J.M.T., E.A., L.M.)
| | - Victor Bazán
- Heart Institute (iCor), University Hospital Germans Trias i Pujol, Badalona, Catalonia (F.B., A.T., A.S., R.V., N.S., G.J., V.B., A.B.-G.)
| | - José María Tolosana
- Cardiovascular Institute, Hospital Clinic, University of Barcelona, Spain (E.B., F.A., G.C., P.G., J.C., E.G., S.P.-G., R.J.P., J.M.T., E.A., L.M.)
| | - Elena Arbelo
- Cardiovascular Institute, Hospital Clinic, University of Barcelona, Spain (E.B., F.A., G.C., P.G., J.C., E.G., S.P.-G., R.J.P., J.M.T., E.A., L.M.)
| | - Antoni Bayés-Genís
- Heart Institute (iCor), University Hospital Germans Trias i Pujol, Badalona, Catalonia (F.B., A.T., A.S., R.V., N.S., G.J., V.B., A.B.-G.)
- CIBERCV, Instituto de Salud Carlos III, Madrid (F.B., A.B.-G., L.M.)
| | - Lluis Mont
- CIBERCV, Instituto de Salud Carlos III, Madrid (F.B., A.B.-G., L.M.)
- Cardiovascular Institute, Hospital Clinic, University of Barcelona, Spain (E.B., F.A., G.C., P.G., J.C., E.G., S.P.-G., R.J.P., J.M.T., E.A., L.M.)
- Institut d’Investigació Biomèdica August Pi I Sunyer (IDIBAPS), Barcelona, Catalonia, Spain (E.G, L.M.)
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9
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Quinto L, Cozzari J, Benito E, Alarcón F, Bisbal F, Trotta O, Caixal G, San Antonio R, Garre P, Prat-Gonzalez S, Perea RJ, Tolosana JM, Berruezo A, Arbelo E, Roca-Luque I, Sitges M, Brugada J, Guasch E, Mont L. Magnetic resonance-guided re-ablation for atrial fibrillation is associated with a lower recurrence rate: a case–control study. Europace 2020; 22:1805-1811. [DOI: 10.1093/europace/euaa252] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Accepted: 06/30/2020] [Indexed: 12/15/2022] Open
Abstract
Abstract
Aims
Our aim was to analyse whether using delayed enhancement cardiac magnetic resonance imaging (DE-CMR) to localize veno-atrial gaps in atrial fibrillation (AF) redo ablation procedures improves outcomes during follow-up.
Methods and results
We conducted a case–control study with 35 consecutive patients undergoing a DE-CMR-guided Repeat-pulmonary vein isolation (Re-PVI) procedure. Those with more extensive ablations (e.g. roof lines, box) were excluded. Patients were matched for age, sex, AF pattern, and left atrial dimension with 35 patients who had undergone a conventional Re-PVI procedure guided with a three dimensional (3D)-navigation system. Procedural characteristics were recorded, and patients were followed for 24 months in a specialized outpatient clinic. The primary endpoint was freedom from recurrent AF, atrial tachycardia, or flutter. The duration of CMR-guided procedures was shorter compared to the conventional group (161 ± 52 vs. 195 ± 72 min, respectively, P = 0.049), with no significant differences in fluoroscopy or total radiofrequency time. At the 2-year follow-up, more patients in the DE-CMR-guided group remained free from recurrences compared with the conventional group (70% vs. 39%, respectively, P = 0.007). In univariate Cox-regression analyses, AF pattern [persistent AF, hazard ratio (HR) 2.66 (1.27–5.46), P = 0.006] and the use of DE-CMR [HR 0.36 (0.17–0.79), P = 0.009] predicted recurrences during follow-up; both factors remained independent predictors in multivariate analyses.
Conclusion
The substrate characterization provided by DE-CMR facilitates the identification of anatomical veno-atrial gaps and associates with shorter procedures and better clinical outcomes in repeated AF ablation procedures.
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Affiliation(s)
- Levio Quinto
- Department of Cardiology, Cardiovascular Clinical Institute, UFA (Unitat de Fibril.laciò Auricular de l’Hospital Clìnic), Hospital Clìnic, Universitat de Barcelona, C/Villarroel 170, 08036 Barcelona, Spain
- Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Catalonia, Spain
| | - Jenniffer Cozzari
- Department of Cardiology, Cardiovascular Clinical Institute, UFA (Unitat de Fibril.laciò Auricular de l’Hospital Clìnic), Hospital Clìnic, Universitat de Barcelona, C/Villarroel 170, 08036 Barcelona, Spain
- Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Catalonia, Spain
| | - Eva Benito
- Department of Cardiology, Cardiovascular Clinical Institute, UFA (Unitat de Fibril.laciò Auricular de l’Hospital Clìnic), Hospital Clìnic, Universitat de Barcelona, C/Villarroel 170, 08036 Barcelona, Spain
- Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Catalonia, Spain
| | - Francisco Alarcón
- Department of Cardiology, Cardiovascular Clinical Institute, UFA (Unitat de Fibril.laciò Auricular de l’Hospital Clìnic), Hospital Clìnic, Universitat de Barcelona, C/Villarroel 170, 08036 Barcelona, Spain
- Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Catalonia, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), Madrid, Spain
| | - Felipe Bisbal
- Department of Cardiology, Cardiovascular Clinical Institute, UFA (Unitat de Fibril.laciò Auricular de l’Hospital Clìnic), Hospital Clìnic, Universitat de Barcelona, C/Villarroel 170, 08036 Barcelona, Spain
- Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Catalonia, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), Madrid, Spain
- Cardiology Department, Hospital Germans Triasi i Pujol, Badalona, Spain
| | - Omar Trotta
- Department of Cardiology, Cardiovascular Clinical Institute, UFA (Unitat de Fibril.laciò Auricular de l’Hospital Clìnic), Hospital Clìnic, Universitat de Barcelona, C/Villarroel 170, 08036 Barcelona, Spain
- Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Catalonia, Spain
| | - Gala Caixal
- Department of Cardiology, Cardiovascular Clinical Institute, UFA (Unitat de Fibril.laciò Auricular de l’Hospital Clìnic), Hospital Clìnic, Universitat de Barcelona, C/Villarroel 170, 08036 Barcelona, Spain
- Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Catalonia, Spain
| | - Rodolfo San Antonio
- Department of Cardiology, Cardiovascular Clinical Institute, UFA (Unitat de Fibril.laciò Auricular de l’Hospital Clìnic), Hospital Clìnic, Universitat de Barcelona, C/Villarroel 170, 08036 Barcelona, Spain
- Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Catalonia, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), Madrid, Spain
| | - Paz Garre
- Department of Cardiology, Cardiovascular Clinical Institute, UFA (Unitat de Fibril.laciò Auricular de l’Hospital Clìnic), Hospital Clìnic, Universitat de Barcelona, C/Villarroel 170, 08036 Barcelona, Spain
- Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Catalonia, Spain
| | - Susana Prat-Gonzalez
- Department of Cardiology, Cardiovascular Clinical Institute, UFA (Unitat de Fibril.laciò Auricular de l’Hospital Clìnic), Hospital Clìnic, Universitat de Barcelona, C/Villarroel 170, 08036 Barcelona, Spain
- Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Catalonia, Spain
| | - Rosario Jesús Perea
- Department of Cardiology, Cardiovascular Clinical Institute, UFA (Unitat de Fibril.laciò Auricular de l’Hospital Clìnic), Hospital Clìnic, Universitat de Barcelona, C/Villarroel 170, 08036 Barcelona, Spain
- Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Catalonia, Spain
| | - José Maria Tolosana
- Department of Cardiology, Cardiovascular Clinical Institute, UFA (Unitat de Fibril.laciò Auricular de l’Hospital Clìnic), Hospital Clìnic, Universitat de Barcelona, C/Villarroel 170, 08036 Barcelona, Spain
- Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Catalonia, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), Madrid, Spain
| | - Antonio Berruezo
- Department of Cardiology, Cardiovascular Clinical Institute, UFA (Unitat de Fibril.laciò Auricular de l’Hospital Clìnic), Hospital Clìnic, Universitat de Barcelona, C/Villarroel 170, 08036 Barcelona, Spain
- Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Catalonia, Spain
| | - Elena Arbelo
- Department of Cardiology, Cardiovascular Clinical Institute, UFA (Unitat de Fibril.laciò Auricular de l’Hospital Clìnic), Hospital Clìnic, Universitat de Barcelona, C/Villarroel 170, 08036 Barcelona, Spain
- Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Catalonia, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), Madrid, Spain
| | - Ivo Roca-Luque
- Department of Cardiology, Cardiovascular Clinical Institute, UFA (Unitat de Fibril.laciò Auricular de l’Hospital Clìnic), Hospital Clìnic, Universitat de Barcelona, C/Villarroel 170, 08036 Barcelona, Spain
- Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Catalonia, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), Madrid, Spain
| | - Marta Sitges
- Department of Cardiology, Cardiovascular Clinical Institute, UFA (Unitat de Fibril.laciò Auricular de l’Hospital Clìnic), Hospital Clìnic, Universitat de Barcelona, C/Villarroel 170, 08036 Barcelona, Spain
- Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Catalonia, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), Madrid, Spain
| | - Josep Brugada
- Department of Cardiology, Cardiovascular Clinical Institute, UFA (Unitat de Fibril.laciò Auricular de l’Hospital Clìnic), Hospital Clìnic, Universitat de Barcelona, C/Villarroel 170, 08036 Barcelona, Spain
- Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Catalonia, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), Madrid, Spain
| | - Eduard Guasch
- Department of Cardiology, Cardiovascular Clinical Institute, UFA (Unitat de Fibril.laciò Auricular de l’Hospital Clìnic), Hospital Clìnic, Universitat de Barcelona, C/Villarroel 170, 08036 Barcelona, Spain
- Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Catalonia, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), Madrid, Spain
| | - Lluís Mont
- Department of Cardiology, Cardiovascular Clinical Institute, UFA (Unitat de Fibril.laciò Auricular de l’Hospital Clìnic), Hospital Clìnic, Universitat de Barcelona, C/Villarroel 170, 08036 Barcelona, Spain
- Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Catalonia, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), Madrid, Spain
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10
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Abstract
From development to aging and disease, the brain parenchyma is under the constant threat of debris accumulation, in the form of dead cells and protein aggregates. To prevent garbage buildup, the brain is equipped with efficient phagocytes: the microglia. Microglia are similar, but not identical to other tissue macrophages, and in this review, we will first summarize the differences in the origin, lineage and population maintenance of microglia and macrophages. Then, we will discuss several principles that govern macrophage phagocytosis of apoptotic cells (efferocytosis), including the existence of redundant recognition mechanisms ("find-me" and "eat-me") that lead to a tight coupling between apoptosis and phagocytosis. We will then describe that resulting from engulfment and degradation of apoptotic cargo, phagocytes undergo an epigenetic, transcriptional and metabolic rewiring that leads to trained immunity, and discuss its relevance for microglia and brain function. In summary, we will show that neuroimmunologists can learn many lessons from the well-developed field of macrophage phagocytosis biology.
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Affiliation(s)
- Mar Márquez-Ropero
- Achucarro Basque Center for Neuroscience, Parque Científico, University of the Basque Country (UPV/EHU), Leioa, Spain
- Department of Neuroscience, University of the Basque Country (UPV/EHU), Leioa, Spain
| | - Eva Benito
- Achucarro Basque Center for Neuroscience, Parque Científico, University of the Basque Country (UPV/EHU), Leioa, Spain
- Department of Neuroscience, University of the Basque Country (UPV/EHU), Leioa, Spain
- Ikerbasque Foundation, Bilbao, Spain
| | - Ainhoa Plaza-Zabala
- Achucarro Basque Center for Neuroscience, Parque Científico, University of the Basque Country (UPV/EHU), Leioa, Spain
- Department of Neuroscience, University of the Basque Country (UPV/EHU), Leioa, Spain
| | - Amanda Sierra
- Achucarro Basque Center for Neuroscience, Parque Científico, University of the Basque Country (UPV/EHU), Leioa, Spain
- Department of Neuroscience, University of the Basque Country (UPV/EHU), Leioa, Spain
- Ikerbasque Foundation, Bilbao, Spain
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11
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Alarcón F, Cabanelas N, Izquierdo M, Benito E, Figueras I Ventura R, Guasch E, Prat-Gonzalez S, Perea RJ, Borràs R, Trotta O, Arbelo E, Tolosana JM, Sitges M, Berruezo A, Brugada J, Mont L. Cryoballoon vs. radiofrequency lesions as detected by late-enhancement cardiac magnetic resonance after ablation of paroxysmal atrial fibrillation: a case-control study. Europace 2020; 22:382-387. [PMID: 31821484 DOI: 10.1093/europace/euz309] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Accepted: 10/17/2019] [Indexed: 12/12/2022] Open
Abstract
AIMS Cryoballoon (CB) ablation has emerged as a reliable modality to isolate pulmonary veins (PVs) in atrial fibrillation. Ablation lesions and the long-term effects of energy delivery can be assessed by delayed-enhancement cardiac magnetic resonance (DE-CMR). The aim of the study was to compare the number, extension, and localization of gaps in CB and radiofrequency (RF) techniques in pulmonary vein isolation (PVI). METHODS AND RESULTS Consecutive patients submitted to PVI with CB in whom DE-CMR images were available (n = 30) were matched (1:1) to patients who underwent PVI with RF (n = 30), considering age, sex, hypertension, and diabetes. Delayed-enhancement cardiac magnetic resonance was obtained at 3 months post-procedure, and images were processed to assess the mean number of gaps around PV ostia, their localization, and the normalized gap length (NGL), calculated as the difference between total gap length and total PV perimeter. Patients were followed up for 12 months. The CB and RF procedures did not differ in the mean number of gaps per patient (4.40 vs. 5.13 gaps, respectively; P = 0.21) nor NGL (0.35 vs. 0.32, P = 0.59). For both techniques, a higher mean number of gaps were detected in right vs. left PVs (3.18 vs. 1.58, respectively; P = 0.01). The incidence of recurrences did not differ between techniques (odds ratio 1.87, 95% confidence interval 0.66-4.97; P = 0.29). CONCLUSION Location and extension of ablation gaps in PVI did not differ between CB and RF groups in DE-CMR image analysis.
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Affiliation(s)
- Francisco Alarcón
- Arrhythmia Unit, Department of Cardiology, Cardiovascular Clinical Institute, UFA (Unitat de Fibril·lació Auricular de l'Hospital Clínic), Hospital Clínic, Universitat de Barcelona. C/Villarroel N° 170, 08036 Barcelona, Spain.,Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Catalonia, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), Madrid, Spain
| | - Nuno Cabanelas
- Arrhythmia Unit, Department of Cardiology, Cardiovascular Clinical Institute, UFA (Unitat de Fibril·lació Auricular de l'Hospital Clínic), Hospital Clínic, Universitat de Barcelona. C/Villarroel N° 170, 08036 Barcelona, Spain.,Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Catalonia, Spain
| | - Marc Izquierdo
- Arrhythmia Unit, Department of Cardiology, Cardiovascular Clinical Institute, UFA (Unitat de Fibril·lació Auricular de l'Hospital Clínic), Hospital Clínic, Universitat de Barcelona. C/Villarroel N° 170, 08036 Barcelona, Spain.,Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Catalonia, Spain
| | - Eva Benito
- Arrhythmia Unit, Department of Cardiology, Cardiovascular Clinical Institute, UFA (Unitat de Fibril·lació Auricular de l'Hospital Clínic), Hospital Clínic, Universitat de Barcelona. C/Villarroel N° 170, 08036 Barcelona, Spain.,Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Catalonia, Spain
| | - Rosa Figueras I Ventura
- Arrhythmia Unit, Department of Cardiology, Cardiovascular Clinical Institute, UFA (Unitat de Fibril·lació Auricular de l'Hospital Clínic), Hospital Clínic, Universitat de Barcelona. C/Villarroel N° 170, 08036 Barcelona, Spain.,Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Catalonia, Spain
| | - Eduard Guasch
- Arrhythmia Unit, Department of Cardiology, Cardiovascular Clinical Institute, UFA (Unitat de Fibril·lació Auricular de l'Hospital Clínic), Hospital Clínic, Universitat de Barcelona. C/Villarroel N° 170, 08036 Barcelona, Spain.,Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Catalonia, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), Madrid, Spain
| | - Susana Prat-Gonzalez
- Arrhythmia Unit, Department of Cardiology, Cardiovascular Clinical Institute, UFA (Unitat de Fibril·lació Auricular de l'Hospital Clínic), Hospital Clínic, Universitat de Barcelona. C/Villarroel N° 170, 08036 Barcelona, Spain.,Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Catalonia, Spain
| | - Rosario Jesus Perea
- Arrhythmia Unit, Department of Cardiology, Cardiovascular Clinical Institute, UFA (Unitat de Fibril·lació Auricular de l'Hospital Clínic), Hospital Clínic, Universitat de Barcelona. C/Villarroel N° 170, 08036 Barcelona, Spain.,Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Catalonia, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), Madrid, Spain
| | - Roger Borràs
- Arrhythmia Unit, Department of Cardiology, Cardiovascular Clinical Institute, UFA (Unitat de Fibril·lació Auricular de l'Hospital Clínic), Hospital Clínic, Universitat de Barcelona. C/Villarroel N° 170, 08036 Barcelona, Spain.,Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Catalonia, Spain
| | - Omar Trotta
- Arrhythmia Unit, Department of Cardiology, Cardiovascular Clinical Institute, UFA (Unitat de Fibril·lació Auricular de l'Hospital Clínic), Hospital Clínic, Universitat de Barcelona. C/Villarroel N° 170, 08036 Barcelona, Spain.,Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Catalonia, Spain
| | - Elena Arbelo
- Arrhythmia Unit, Department of Cardiology, Cardiovascular Clinical Institute, UFA (Unitat de Fibril·lació Auricular de l'Hospital Clínic), Hospital Clínic, Universitat de Barcelona. C/Villarroel N° 170, 08036 Barcelona, Spain.,Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Catalonia, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), Madrid, Spain
| | - José Maria Tolosana
- Arrhythmia Unit, Department of Cardiology, Cardiovascular Clinical Institute, UFA (Unitat de Fibril·lació Auricular de l'Hospital Clínic), Hospital Clínic, Universitat de Barcelona. C/Villarroel N° 170, 08036 Barcelona, Spain.,Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Catalonia, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), Madrid, Spain
| | - Marta Sitges
- Arrhythmia Unit, Department of Cardiology, Cardiovascular Clinical Institute, UFA (Unitat de Fibril·lació Auricular de l'Hospital Clínic), Hospital Clínic, Universitat de Barcelona. C/Villarroel N° 170, 08036 Barcelona, Spain.,Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Catalonia, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), Madrid, Spain
| | - Antonio Berruezo
- Arrhythmia Unit, Department of Cardiology, Cardiovascular Clinical Institute, UFA (Unitat de Fibril·lació Auricular de l'Hospital Clínic), Hospital Clínic, Universitat de Barcelona. C/Villarroel N° 170, 08036 Barcelona, Spain.,Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Catalonia, Spain
| | - Josep Brugada
- Arrhythmia Unit, Department of Cardiology, Cardiovascular Clinical Institute, UFA (Unitat de Fibril·lació Auricular de l'Hospital Clínic), Hospital Clínic, Universitat de Barcelona. C/Villarroel N° 170, 08036 Barcelona, Spain.,Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Catalonia, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), Madrid, Spain
| | - Lluís Mont
- Arrhythmia Unit, Department of Cardiology, Cardiovascular Clinical Institute, UFA (Unitat de Fibril·lació Auricular de l'Hospital Clínic), Hospital Clínic, Universitat de Barcelona. C/Villarroel N° 170, 08036 Barcelona, Spain.,Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Catalonia, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), Madrid, Spain
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12
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Bertelsen L, Alarcón F, Andreasen L, Benito E, Olesen MS, Vejlstrup N, Mont L, Svendsen JH. Verification of threshold for image intensity ratio analyses of late gadolinium enhancement magnetic resonance imaging of left atrial fibrosis in 1.5T scans. Int J Cardiovasc Imaging 2019; 36:513-520. [PMID: 31748945 PMCID: PMC7080681 DOI: 10.1007/s10554-019-01728-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Accepted: 11/03/2019] [Indexed: 11/25/2022]
Abstract
The use of cardiovascular magnetic resonance imaging left atrial late gadolinium enhancement (LA LGE) is increasing for fibrosis evaluation though the use is still limited to specialized centres due to complex image acquisition and lack of consensus on image analyses. Analysis of LA LGE with image intensity ratio (IIR) (pixel intensity of atrial wall normalized by blood pool intensity) provides an objective method to obtain quantitative data on atrial fibrosis. A threshold between healthy myocardium and fibrosis of 1.2 has previously been established in 3T scans. The aim of the study was to reaffirm this threshold in 1.5T scans. LA LGE was performed using a 1.5T magnetic resonance scanner on: 11 lone-AF patients, 11 age-matched healthy volunteers (aged 27-44) and 11 elderly patients without known history of AF but varying degrees of comorbidities. Mean values of IIR for all healthy volunteers +2SD were set as upper limit of normality and was reproduced to 1.21 and the original IIR-threshold of 1.20 was maintained. The degree of fibrosis in lone-AF patients [median 9.0% (IQR 3.9-12.0)] was higher than in healthy volunteers [2.8% (1.3-8.3)] and even higher in elderly non-AF [20.1% (10.2-35.8), p = 0.001]. The previously established IIR-threshold of 1.2 was reaffirmed in 1.5T LA LGE scans. Patients with lone AF presented with increased degrees of atrial fibrosis compared to healthy volunteers in the same age-range. Elderly patients with no history of AF showed significantly higher degrees of fibrosis compared to both groups with younger individuals.
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Affiliation(s)
- Litten Bertelsen
- Department of Cardiology, Centre for Cardiac-, Vascular-, Pulmonary and Infectious Diseases, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
| | - Francisco Alarcón
- Department of Cardiology, Unitat de Fibril.lació Auricular (UFA) Hospital Clinic, University of Barcelona, Barcelona, Spain
- Institut d’Investigacions Biomédiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
| | - Laura Andreasen
- Department of Cardiology, Centre for Cardiac-, Vascular-, Pulmonary and Infectious Diseases, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
- Department of Biomedical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Eva Benito
- Department of Cardiology, Unitat de Fibril.lació Auricular (UFA) Hospital Clinic, University of Barcelona, Barcelona, Spain
- Institut d’Investigacions Biomédiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
| | | | - Niels Vejlstrup
- Department of Cardiology, Centre for Cardiac-, Vascular-, Pulmonary and Infectious Diseases, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
| | - Lluis Mont
- Department of Cardiology, Unitat de Fibril.lació Auricular (UFA) Hospital Clinic, University of Barcelona, Barcelona, Spain
- Institut d’Investigacions Biomédiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
| | - Jesper Hastrup Svendsen
- Department of Cardiology, Centre for Cardiac-, Vascular-, Pulmonary and Infectious Diseases, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
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13
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Urban I, Kerimoglu C, Sakib MS, Wang H, Benito E, Thaller C, Zhou X, Yan J, Fischer A, Eichele G. TIP60/KAT5 is required for neuronal viability in hippocampal CA1. Sci Rep 2019; 9:16173. [PMID: 31700011 PMCID: PMC6838100 DOI: 10.1038/s41598-019-50927-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2018] [Accepted: 09/18/2019] [Indexed: 12/24/2022] Open
Abstract
Aberrant histone acetylation contributes to age-dependent cognitive decline and neurodegenerative diseases. We analyze the function of lysine acetyltransferase TIP60/KAT5 in neurons of the hippocampus using an inducible mouse model. TIP60-deficiency in the adult forebrain leads within days to extensive transcriptional dysfunction characterized by the presence of a neurodegeneration-related signature in CA1. Cell cycle- and immunity-related genes are upregulated while learning- and neuronal plasticity-related genes are downregulated. The dysregulated genes seen under TIP60-deficiency overlap with those in the well-characterized CK-p25 neurodegeneration model. We found that H4K12 is hypoacetylated at the transcriptional start sites of those genes whose expression is dampened in TIP60-deficient mice. Transcriptional dysregulation is followed over a period of weeks by activation of Caspase 3 and fragmentation of β-actin in CA1 neurites, eventually leading to severe neuronal loss. TIP60-deficient mice also develop mild memory impairment. These phenotypes point to a central role of TIP60 in transcriptional networks that are critical for neuronal viability.
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Affiliation(s)
- Inga Urban
- Genes and Behavior Department, Max Planck Institute for Biophysical Chemistry, 37077, Göttingen, Germany
| | - Cemil Kerimoglu
- Department of Epigenetics and Systems Medicine in Neurodegenerative Diseases, German Center for Neurodegenerative Diseases (DZNE) Göttingen, 37075, Göttingen, Germany
| | - M Sadman Sakib
- Department of Epigenetics and Systems Medicine in Neurodegenerative Diseases, German Center for Neurodegenerative Diseases (DZNE) Göttingen, 37075, Göttingen, Germany
| | - Haifang Wang
- Institute of Neuroscience, State Key Laboratory of Neuroscience, CAS Center for Excellence in Brain Science and Intelligence Technology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, 200031, China
| | - Eva Benito
- Department of Epigenetics and Systems Medicine in Neurodegenerative Diseases, German Center for Neurodegenerative Diseases (DZNE) Göttingen, 37075, Göttingen, Germany.,European Molecular Biology Organization (EMBO), 69117, Heidelberg, Germany
| | - Christina Thaller
- Genes and Behavior Department, Max Planck Institute for Biophysical Chemistry, 37077, Göttingen, Germany
| | - Xunlei Zhou
- Genes and Behavior Department, Max Planck Institute for Biophysical Chemistry, 37077, Göttingen, Germany.,Institute of Anatomy and Cell Biology, University of Heidelberg, 69120, Heidelberg, Germany
| | - Jun Yan
- Institute of Neuroscience, State Key Laboratory of Neuroscience, CAS Center for Excellence in Brain Science and Intelligence Technology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, 200031, China.,University of Chinese Academy of Sciences, Beijing, China
| | - André Fischer
- Department of Epigenetics and Systems Medicine in Neurodegenerative Diseases, German Center for Neurodegenerative Diseases (DZNE) Göttingen, 37075, Göttingen, Germany. .,Department for Psychiatry and Psychotherapy, University Medical Center Göttingen, 37075, Göttingen, Germany.
| | - Gregor Eichele
- Genes and Behavior Department, Max Planck Institute for Biophysical Chemistry, 37077, Göttingen, Germany.
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14
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Benito E, Kerimoglu C, Ramachandran B, Pena-Centeno T, Jain G, Stilling RM, Islam MR, Capece V, Zhou Q, Edbauer D, Dean C, Fischer A. RNA-Dependent Intergenerational Inheritance of Enhanced Synaptic Plasticity after Environmental Enrichment. Cell Rep 2019; 23:546-554. [PMID: 29642011 PMCID: PMC5912949 DOI: 10.1016/j.celrep.2018.03.059] [Citation(s) in RCA: 85] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2017] [Revised: 02/05/2018] [Accepted: 03/14/2018] [Indexed: 01/05/2023] Open
Abstract
Physical exercise in combination with cognitive training is known to enhance synaptic plasticity, learning, and memory and lower the risk for various complex diseases including Alzheimer's disease. Here, we show that exposure of adult male mice to an environmental enrichment paradigm leads to enhancement of synaptic plasticity and cognition also in the next generation. We show that this effect is mediated through sperm RNA and especially miRs 212/132. In conclusion, our study reports intergenerational inheritance of an acquired cognitive benefit and points to specific miRs as candidates mechanistically involved in this type of transmission.
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Affiliation(s)
- Eva Benito
- Department for Epigenetics and Systems Medicine in Neurodegenerative Diseases, German Center for Neurodegenerative Diseases (DZNE) Göttingen, von Siebold Strasse 3A, 37075 Göttingen, Germany
| | - Cemil Kerimoglu
- Department for Epigenetics and Systems Medicine in Neurodegenerative Diseases, German Center for Neurodegenerative Diseases (DZNE) Göttingen, von Siebold Strasse 3A, 37075 Göttingen, Germany
| | - Binu Ramachandran
- Trans-synaptic Signaling Group, European Neuroscience Institute, Grisebachstrasse 5, 37077 Göttingen, Germany
| | - Tonatiuh Pena-Centeno
- Department for Epigenetics and Systems Medicine in Neurodegenerative Diseases, German Center for Neurodegenerative Diseases (DZNE) Göttingen, von Siebold Strasse 3A, 37075 Göttingen, Germany; Bioinformatics Unit, German Center for Neurodegenerative Diseases (DZNE) Göttingen, von Siebold Strasse 3A, 37075 Göttingen, Germany
| | - Gaurav Jain
- Department for Epigenetics and Systems Medicine in Neurodegenerative Diseases, German Center for Neurodegenerative Diseases (DZNE) Göttingen, von Siebold Strasse 3A, 37075 Göttingen, Germany; Bioinformatics Unit, German Center for Neurodegenerative Diseases (DZNE) Göttingen, von Siebold Strasse 3A, 37075 Göttingen, Germany
| | - Roman Manuel Stilling
- Department for Epigenetics and Systems Medicine in Neurodegenerative Diseases, German Center for Neurodegenerative Diseases (DZNE) Göttingen, von Siebold Strasse 3A, 37075 Göttingen, Germany
| | - Md Rezaul Islam
- Department for Epigenetics and Systems Medicine in Neurodegenerative Diseases, German Center for Neurodegenerative Diseases (DZNE) Göttingen, von Siebold Strasse 3A, 37075 Göttingen, Germany
| | - Vincenzo Capece
- Department for Epigenetics and Systems Medicine in Neurodegenerative Diseases, German Center for Neurodegenerative Diseases (DZNE) Göttingen, von Siebold Strasse 3A, 37075 Göttingen, Germany; Bioinformatics Unit, German Center for Neurodegenerative Diseases (DZNE) Göttingen, von Siebold Strasse 3A, 37075 Göttingen, Germany
| | - Qihui Zhou
- German Center for Neurodegenerative Diseases (DZNE), Munich, Feodor Lynen Strasse 17, 81377 Munich, Germany
| | - Dieter Edbauer
- German Center for Neurodegenerative Diseases (DZNE), Munich, Feodor Lynen Strasse 17, 81377 Munich, Germany
| | - Camin Dean
- Trans-synaptic Signaling Group, European Neuroscience Institute, Grisebachstrasse 5, 37077 Göttingen, Germany
| | - André Fischer
- Department for Epigenetics and Systems Medicine in Neurodegenerative Diseases, German Center for Neurodegenerative Diseases (DZNE) Göttingen, von Siebold Strasse 3A, 37075 Göttingen, Germany; Department of Psychiatry and Psychotherapy, University Medical Center Göttingen, Von Siebold Strasse 5, 37075 Göttingen, Germany.
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15
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Burk K, Ramachandran B, Ahmed S, Hurtado-Zavala JI, Awasthi A, Benito E, Faram R, Ahmad H, Swaminathan A, McIlhinney J, Fischer A, Perestenko P, Dean C. Regulation of Dendritic Spine Morphology in Hippocampal Neurons by Copine-6. Cereb Cortex 2019; 28:1087-1104. [PMID: 28158493 DOI: 10.1093/cercor/bhx009] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2015] [Indexed: 12/20/2022] Open
Abstract
Dendritic spines compartmentalize information in the brain, and their morphological characteristics are thought to underly synaptic plasticity. Here we identify copine-6 as a novel modulator of dendritic spine morphology. We found that brain-derived neurotrophic factor (BDNF) - a molecule essential for long-term potentiation of synaptic strength - upregulated and recruited copine-6 to dendritic spines in hippocampal neurons. Overexpression of copine-6 increased mushroom spine number and decreased filopodia number, while copine-6 knockdown had the opposite effect and dramatically increased the number of filopodia, which lacked PSD95. Functionally, manipulation of post-synaptic copine-6 levels affected miniature excitatory post-synaptic current (mEPSC) kinetics and evoked synaptic vesicle recycling in contacting boutons, and post-synaptic knockdown of copine-6 reduced hippocampal LTP and increased LTD. Mechanistically, copine-6 promotes BDNF-TrkB signaling and recycling of activated TrkB receptors back to the plasma membrane surface, and is necessary for BDNF-induced increases in mushroom spines in hippocampal neurons. Thus copine-6 regulates BDNF-dependent changes in dendritic spine morphology to promote synaptic plasticity.
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Affiliation(s)
- Katja Burk
- Trans-synaptic Signaling Group, European Neuroscience Institute, Grisebachstrasse 5, 37077 Göttingen, Germany
| | - Binu Ramachandran
- Trans-synaptic Signaling Group, European Neuroscience Institute, Grisebachstrasse 5, 37077 Göttingen, Germany
| | - Saheeb Ahmed
- Trans-synaptic Signaling Group, European Neuroscience Institute, Grisebachstrasse 5, 37077 Göttingen, Germany.,Department of Diagnostic and Interventional Radiology, University Medical Center Göttingen, Robert Koch Strasse 40, 37075 Göttingen, Germany
| | - Joaquin I Hurtado-Zavala
- Trans-synaptic Signaling Group, European Neuroscience Institute, Grisebachstrasse 5, 37077 Göttingen, Germany
| | - Ankit Awasthi
- Trans-synaptic Signaling Group, European Neuroscience Institute, Grisebachstrasse 5, 37077 Göttingen, Germany
| | - Eva Benito
- German Center for Neurodegenerative Diseases (DZNE) Göttingen, von Siebold Str. 3A, 37075 Göttingen , Germany
| | - Ruth Faram
- MRC Anatomical Neuropharmacology Unit, University of Oxford, Mansfield Road, Oxford OX1 3TH , UK
| | - Hamid Ahmad
- Trans-synaptic Signaling Group, European Neuroscience Institute, Grisebachstrasse 5, 37077 Göttingen, Germany.,Johannes Gutenberg University Mainz, Saarstrasse 21, 55122 Mainz, Germany
| | - Aarti Swaminathan
- Trans-synaptic Signaling Group, European Neuroscience Institute, Grisebachstrasse 5, 37077 Göttingen, Germany
| | - Jeffrey McIlhinney
- MRC Anatomical Neuropharmacology Unit, University of Oxford, Mansfield Road, Oxford OX1 3TH , UK
| | - Andre Fischer
- German Center for Neurodegenerative Diseases (DZNE) Göttingen, von Siebold Str. 3A, 37075 Göttingen , Germany
| | - Pavel Perestenko
- MRC Anatomical Neuropharmacology Unit, University of Oxford, Mansfield Road, Oxford OX1 3TH , UK
| | - Camin Dean
- Trans-synaptic Signaling Group, European Neuroscience Institute, Grisebachstrasse 5, 37077 Göttingen, Germany
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16
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Bisbal F, Alarcón F, Ferrero‐De‐Loma‐Osorio A, González‐Ferrer JJ, Alonso‐Martín C, Pachón M, Vallés E, Cabanas‐Grandío P, Sanchez M, Benito E, Sarrias A, Ruiz‐Granell R, Pérez‐Villacastín J, Viñolas X, Arias MA, Martí‐Almor J, García‐Campo E, Fernández‐Lozano I, Villuendas R, Mont L. Diagnosis‐to‐ablation time in atrial fibrillation: A modifiable factor relevant to clinical outcome. J Cardiovasc Electrophysiol 2019; 30:1483-1490. [DOI: 10.1111/jce.14000] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Revised: 04/05/2019] [Accepted: 04/20/2019] [Indexed: 01/01/2023]
Affiliation(s)
- Felipe Bisbal
- Heart Institute (iCor)University Hospital Germans Trias i PujolBadalona Spain
- Instituto de Salud Carlos IIICIBERCVMadrid Spain
| | - Francisco Alarcón
- Atrial Fibrillation Unit (UFA), Hospital ClinicUniversitat de Barcelona, IDIBAPSBarcelona Spain
| | | | - Juan Jose González‐Ferrer
- Instituto de Salud Carlos IIICIBERCVMadrid Spain
- Cardiology DepartmentHospital Clinico San CarlosMadrid Spain
| | | | - Marta Pachón
- Cardiology DepartmentHospital Virgen de la SaludToledo Spain
| | | | | | - Manuel Sanchez
- Cardiology DepartmentHospital Puerta de HierroMajadahonda Spain
| | - Eva Benito
- Atrial Fibrillation Unit (UFA), Hospital ClinicUniversitat de Barcelona, IDIBAPSBarcelona Spain
| | - Axel Sarrias
- Heart Institute (iCor)University Hospital Germans Trias i PujolBadalona Spain
| | | | - Julián Pérez‐Villacastín
- Instituto de Salud Carlos IIICIBERCVMadrid Spain
- Cardiology DepartmentHospital Clinico San CarlosMadrid Spain
| | - Xavier Viñolas
- Cardiology DepartmentHospital de la Santa Creu i Sant PauBarcelona Spain
| | | | | | | | | | - Roger Villuendas
- Heart Institute (iCor)University Hospital Germans Trias i PujolBadalona Spain
| | - Lluís Mont
- Instituto de Salud Carlos IIICIBERCVMadrid Spain
- Atrial Fibrillation Unit (UFA), Hospital ClinicUniversitat de Barcelona, IDIBAPSBarcelona Spain
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17
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Martinez Hernandez A, Urbanke H, Gillman AL, Lee J, Ryazanov S, Agbemenyah HY, Benito E, Jain G, Kaurani L, Grigorian G, Leonov A, Rezaei-Ghaleh N, Wilken P, Arce FT, Wagner J, Fuhrmann M, Caruana M, Camilleri A, Vassallo N, Zweckstetter M, Benz R, Giese A, Schneider A, Korte M, Lal R, Griesinger C, Eichele G, Fischer A. The diphenylpyrazole compound anle138b blocks Aβ channels and rescues disease phenotypes in a mouse model for amyloid pathology. EMBO Mol Med 2019; 10:32-47. [PMID: 29208638 PMCID: PMC5760857 DOI: 10.15252/emmm.201707825] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Alzheimer's disease is a devastating neurodegenerative disease eventually leading to dementia. An effective treatment does not yet exist. Here we show that oral application of the compound anle138b restores hippocampal synaptic and transcriptional plasticity as well as spatial memory in a mouse model for Alzheimer's disease, when given orally before or after the onset of pathology. At the mechanistic level, we provide evidence that anle138b blocks the activity of conducting Aβ pores without changing the membrane embedded Aβ-oligomer structure. In conclusion, our data suggest that anle138b is a novel and promising compound to treat AD-related pathology that should be investigated further.
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Affiliation(s)
- Ana Martinez Hernandez
- Department for Epigenetics and Systems Medicine in Neurodegenerative Diseases, German Center for Neurodegenerative Diseases (DZNE), Göttingen, Germany.,Department for Genes and Behavior, Max Planck Institute for Biophysical Chemistry, Göttingen, Germany
| | - Hendrik Urbanke
- Department for Epigenetics and Systems Medicine in Neurodegenerative Diseases, German Center for Neurodegenerative Diseases (DZNE), Göttingen, Germany
| | - Alan L Gillman
- Department of Bioengineering, Materials Science and Engineering, Department of Mechanical and Aerospace Engineering and Institute of Engineering in Medicine, University of California San Diego, La Jolla, CA, USA
| | - Joon Lee
- Department of Bioengineering, Materials Science and Engineering, Department of Mechanical and Aerospace Engineering and Institute of Engineering in Medicine, University of California San Diego, La Jolla, CA, USA
| | - Sergey Ryazanov
- Department of NMR Based Structural Biology, Max Planck Institute for Biophysical Chemistry, Göttingen, Germany.,DFG Research Center Nanoscale Microscopy and Molecular Physiology of the Brain, Göttingen, Germany
| | - Hope Y Agbemenyah
- Department of Psychiatry and Psychotherapy, University Medical Center Göttingen, Göttingen, Germany
| | - Eva Benito
- Department for Epigenetics and Systems Medicine in Neurodegenerative Diseases, German Center for Neurodegenerative Diseases (DZNE), Göttingen, Germany
| | - Gaurav Jain
- Department for Epigenetics and Systems Medicine in Neurodegenerative Diseases, German Center for Neurodegenerative Diseases (DZNE), Göttingen, Germany
| | - Lalit Kaurani
- DFG Research Center Nanoscale Microscopy and Molecular Physiology of the Brain, Göttingen, Germany
| | - Gayane Grigorian
- Department of Cellular Neurobiology, Technical University Braunschweig, Braunschweig, Germany
| | - Andrei Leonov
- Department of NMR Based Structural Biology, Max Planck Institute for Biophysical Chemistry, Göttingen, Germany.,DFG Research Center Nanoscale Microscopy and Molecular Physiology of the Brain, Göttingen, Germany
| | - Nasrollah Rezaei-Ghaleh
- Department of NMR Based Structural Biology, Max Planck Institute for Biophysical Chemistry, Göttingen, Germany.,Department of Translational Structural Biology of Dementia, German Center for Neurodegenerative Diseases (DZNE), Göttingen, Germany
| | - Petra Wilken
- DFG Research Center Nanoscale Microscopy and Molecular Physiology of the Brain, Göttingen, Germany.,Department of Psychiatry and Psychotherapy, University Medical Center Göttingen, Göttingen, Germany.,Group for Translational Research in Neurodegenerative Diseases, German Center for Neurodegenerative Diseases (DZNE) Göttingen, Göttingen, Germany
| | - Fernando Teran Arce
- Department of Bioengineering, Materials Science and Engineering, Department of Mechanical and Aerospace Engineering and Institute of Engineering in Medicine, University of California San Diego, La Jolla, CA, USA
| | - Jens Wagner
- Group for Neuroimmunology and Imaging, German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany
| | - Martin Fuhrmann
- Group for Neuroimmunology and Imaging, German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany
| | - Mario Caruana
- Department of Physiology and Biochemistry, Centre for Molecular Medicine and Biobanking, University of Malta, Msida, Malta
| | - Angelique Camilleri
- Department of Physiology and Biochemistry, Centre for Molecular Medicine and Biobanking, University of Malta, Msida, Malta
| | - Neville Vassallo
- Department of Physiology and Biochemistry, Centre for Molecular Medicine and Biobanking, University of Malta, Msida, Malta
| | - Markus Zweckstetter
- Department of NMR Based Structural Biology, Max Planck Institute for Biophysical Chemistry, Göttingen, Germany.,DFG Research Center Nanoscale Microscopy and Molecular Physiology of the Brain, Göttingen, Germany.,Department of Translational Structural Biology of Dementia, German Center for Neurodegenerative Diseases (DZNE), Göttingen, Germany.,Department of Neurology, University Medical Center Göttingen, University of Göttingen, Göttingen, Germany
| | - Roland Benz
- Life Sciences and Chemistry, Jacobs University of Bremen, Bremen, Germany
| | - Armin Giese
- Center for Neuropathology and Prion Research, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Anja Schneider
- DFG Research Center Nanoscale Microscopy and Molecular Physiology of the Brain, Göttingen, Germany.,Department of Psychiatry and Psychotherapy, University Medical Center Göttingen, Göttingen, Germany.,Group for Translational Research in Neurodegenerative Diseases, German Center for Neurodegenerative Diseases (DZNE) Göttingen, Göttingen, Germany
| | - Martin Korte
- Department of Cellular Neurobiology, Technical University Braunschweig, Braunschweig, Germany .,Helmholtz Center for Infections Research, Braunschweig, Germany
| | - Ratnesh Lal
- Department of Bioengineering, Materials Science and Engineering, Department of Mechanical and Aerospace Engineering and Institute of Engineering in Medicine, University of California San Diego, La Jolla, CA, USA
| | - Christian Griesinger
- Department of NMR Based Structural Biology, Max Planck Institute for Biophysical Chemistry, Göttingen, Germany .,DFG Research Center Nanoscale Microscopy and Molecular Physiology of the Brain, Göttingen, Germany
| | - Gregor Eichele
- Department for Genes and Behavior, Max Planck Institute for Biophysical Chemistry, Göttingen, Germany
| | - Andre Fischer
- Department for Epigenetics and Systems Medicine in Neurodegenerative Diseases, German Center for Neurodegenerative Diseases (DZNE), Göttingen, Germany .,Department of Psychiatry and Psychotherapy, University Medical Center Göttingen, Göttingen, Germany
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18
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Awasthi A, Ramachandran B, Ahmed S, Benito E, Shinoda Y, Nitzan N, Heukamp A, Rannio S, Martens H, Barth J, Burk K, Wang YT, Fischer A, Dean C. Synaptotagmin-3 drives AMPA receptor endocytosis, depression of synapse strength, and forgetting. Science 2018; 363:science.aav1483. [PMID: 30545844 DOI: 10.1126/science.aav1483] [Citation(s) in RCA: 79] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2018] [Accepted: 11/01/2018] [Indexed: 01/01/2023]
Abstract
Forgetting is important. Without it, the relative importance of acquired memories in a changing environment is lost. We discovered that synaptotagmin-3 (Syt3) localizes to postsynaptic endocytic zones and removes AMPA receptors from synaptic plasma membranes in response to stimulation. AMPA receptor internalization, long-term depression (LTD), and decay of long-term potentiation (LTP) of synaptic strength required calcium-sensing by Syt3 and were abolished through Syt3 knockout. In spatial memory tasks, mice in which Syt3 was knocked out learned normally but exhibited a lack of forgetting. Disrupting Syt3:GluA2 binding in a wild-type background mimicked the lack of LTP decay and lack of forgetting, and these effects were occluded in the Syt3 knockout background. Our findings provide evidence for a molecular mechanism in which Syt3 internalizes AMPA receptors to depress synaptic strength and promote forgetting.
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Affiliation(s)
- Ankit Awasthi
- Trans-synaptic Signaling Group, European Neuroscience Institute, 37077 Goettingen, Germany
| | - Binu Ramachandran
- Trans-synaptic Signaling Group, European Neuroscience Institute, 37077 Goettingen, Germany
| | - Saheeb Ahmed
- Trans-synaptic Signaling Group, European Neuroscience Institute, 37077 Goettingen, Germany
| | - Eva Benito
- German Center for Neurodegenerative Disease, 37075 Goettingen, Germany.,Department of Psychiatry and Psychotherapy, University Medical Center Goettingen, 37075 Goettingen, Germany
| | - Yo Shinoda
- Trans-synaptic Signaling Group, European Neuroscience Institute, 37077 Goettingen, Germany
| | - Noam Nitzan
- Trans-synaptic Signaling Group, European Neuroscience Institute, 37077 Goettingen, Germany
| | - Alina Heukamp
- Trans-synaptic Signaling Group, European Neuroscience Institute, 37077 Goettingen, Germany
| | - Sabine Rannio
- Trans-synaptic Signaling Group, European Neuroscience Institute, 37077 Goettingen, Germany
| | | | - Jonas Barth
- German Center for Neurodegenerative Disease, 37075 Goettingen, Germany.,Department of Psychiatry and Psychotherapy, University Medical Center Goettingen, 37075 Goettingen, Germany
| | - Katja Burk
- Trans-synaptic Signaling Group, European Neuroscience Institute, 37077 Goettingen, Germany
| | - Yu Tian Wang
- Brain Research Center and Department of Medicine, University of British Columbia, Vancouver, BC V6T2B5, Canada
| | - Andre Fischer
- German Center for Neurodegenerative Disease, 37075 Goettingen, Germany.,Department of Psychiatry and Psychotherapy, University Medical Center Goettingen, 37075 Goettingen, Germany
| | - Camin Dean
- Trans-synaptic Signaling Group, European Neuroscience Institute, 37077 Goettingen, Germany.
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19
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Mandad S, Rahman RU, Centeno TP, Vidal RO, Wildhagen H, Rammner B, Keihani S, Opazo F, Urban I, Ischebeck T, Kirli K, Benito E, Fischer A, Yousefi RY, Dennerlein S, Rehling P, Feussner I, Urlaub H, Bonn S, Rizzoli SO, Fornasiero EF. The codon sequences predict protein lifetimes and other parameters of the protein life cycle in the mouse brain. Sci Rep 2018; 8:16913. [PMID: 30443017 PMCID: PMC6237891 DOI: 10.1038/s41598-018-35277-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Accepted: 11/02/2018] [Indexed: 12/14/2022] Open
Abstract
The homeostasis of the proteome depends on the tight regulation of the mRNA and protein abundances, of the translation rates, and of the protein lifetimes. Results from several studies on prokaryotes or eukaryotic cell cultures have suggested that protein homeostasis is connected to, and perhaps regulated by, the protein and the codon sequences. However, this has been little investigated for mammals in vivo. Moreover, the link between the coding sequences and one critical parameter, the protein lifetime, has remained largely unexplored, both in vivo and in vitro. We tested this in the mouse brain, and found that the percentages of amino acids and codons in the sequences could predict all of the homeostasis parameters with a precision approaching experimental measurements. A key predictive element was the wobble nucleotide. G-/C-ending codons correlated with higher protein lifetimes, protein abundances, mRNA abundances and translation rates than A-/U-ending codons. Modifying the proportions of G-/C-ending codons could tune these parameters in cell cultures, in a proof-of-principle experiment. We suggest that the coding sequences are strongly linked to protein homeostasis in vivo, albeit it still remains to be determined whether this relation is causal in nature.
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Affiliation(s)
- Sunit Mandad
- Department of Neuro- and Sensory Physiology, University Medical Center Göttingen, Cluster of Excellence Nanoscale Microscopy and Molecular Physiology of the Brain, 37073, Göttingen, Germany
- Bioanalytical Mass Spectrometry Group, Max Planck Institute of Biophysical Chemistry, 37077, Göttingen, Germany
| | - Raza-Ur Rahman
- Laboratory of Computational Systems Biology, German Center for Neurodegenerative Diseases (DZNE), 37075, Göttingen, Germany
- Institute of Medical Systems Biology, Center for Molecular Neurobiology (ZMNH), University Medical Center Hamburg-Eppendorf (UKE), 20246, Hamburg, Germany
| | - Tonatiuh Pena Centeno
- Laboratory of Computational Systems Biology, German Center for Neurodegenerative Diseases (DZNE), 37075, Göttingen, Germany
| | - Ramon O Vidal
- Laboratory of Computational Systems Biology, German Center for Neurodegenerative Diseases (DZNE), 37075, Göttingen, Germany
| | - Hanna Wildhagen
- Department of Neuro- and Sensory Physiology, University Medical Center Göttingen, Cluster of Excellence Nanoscale Microscopy and Molecular Physiology of the Brain, 37073, Göttingen, Germany
| | - Burkhard Rammner
- Department of Neuro- and Sensory Physiology, University Medical Center Göttingen, Cluster of Excellence Nanoscale Microscopy and Molecular Physiology of the Brain, 37073, Göttingen, Germany
| | - Sarva Keihani
- Department of Neuro- and Sensory Physiology, University Medical Center Göttingen, Cluster of Excellence Nanoscale Microscopy and Molecular Physiology of the Brain, 37073, Göttingen, Germany
| | - Felipe Opazo
- Department of Neuro- and Sensory Physiology, University Medical Center Göttingen, Cluster of Excellence Nanoscale Microscopy and Molecular Physiology of the Brain, 37073, Göttingen, Germany
| | - Inga Urban
- Genes and Behavior Department, Max Planck Institute of Biophysical Chemistry, 37073, Göttingen, Germany
| | - Till Ischebeck
- Department of Plant Biochemistry, Albrecht-von-Haller-Institute, Georg-August-University, 37073, Göttingen, Germany
| | - Koray Kirli
- Department of Cellular Logistics, Max Planck Institute for Biophysical Chemistry, 37073, Göttingen, Germany
| | - Eva Benito
- Laboratory of Epigenetics in Neurodegenerative Diseases, German Center for Neurodegenerative Diseases (DZNE), 37075, Göttingen, Germany
| | - André Fischer
- Laboratory of Epigenetics in Neurodegenerative Diseases, German Center for Neurodegenerative Diseases (DZNE), 37075, Göttingen, Germany
- Department of Psychiatry and Psychotherapy, University Medical Center Göttingen, 37075, Göttingen, Germany
| | - Roya Y Yousefi
- Department of Cellular Biochemistry, University Medical Center Göttingen, Göttingen, 37073, Germany
| | - Sven Dennerlein
- Department of Cellular Biochemistry, University Medical Center Göttingen, Göttingen, 37073, Germany
| | - Peter Rehling
- Department of Cellular Biochemistry, University Medical Center Göttingen, Göttingen, 37073, Germany
- Max Planck Institute for Biophysical Chemistry, 37073, Göttingen, Germany
| | - Ivo Feussner
- Department of Plant Biochemistry, Albrecht-von-Haller-Institute, Georg-August-University, 37073, Göttingen, Germany
| | - Henning Urlaub
- Department of Clinical Chemistry, University Medical Center Göttingen, 37077, Göttingen, Germany
- Bioanalytical Mass Spectrometry Group, Max Planck Institute of Biophysical Chemistry, 37077, Göttingen, Germany
| | - Stefan Bonn
- Laboratory of Computational Systems Biology, German Center for Neurodegenerative Diseases (DZNE), 37075, Göttingen, Germany.
- Institute of Medical Systems Biology, Center for Molecular Neurobiology (ZMNH), University Medical Center Hamburg-Eppendorf (UKE), 20246, Hamburg, Germany.
- German Center for Neurodegenerative Diseases (DZNE), 72076, Tübingen, Germany.
| | - Silvio O Rizzoli
- Department of Neuro- and Sensory Physiology, University Medical Center Göttingen, Cluster of Excellence Nanoscale Microscopy and Molecular Physiology of the Brain, 37073, Göttingen, Germany.
- Center for Biostructural Imaging of Neurodegeneration (BIN), 37075, Göttingen, Germany.
| | - Eugenio F Fornasiero
- Department of Neuro- and Sensory Physiology, University Medical Center Göttingen, Cluster of Excellence Nanoscale Microscopy and Molecular Physiology of the Brain, 37073, Göttingen, Germany.
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20
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Fornasiero EF, Mandad S, Wildhagen H, Alevra M, Rammner B, Keihani S, Opazo F, Urban I, Ischebeck T, Sakib MS, Fard MK, Kirli K, Centeno TP, Vidal RO, Rahman RU, Benito E, Fischer A, Dennerlein S, Rehling P, Feussner I, Bonn S, Simons M, Urlaub H, Rizzoli SO. Precisely measured protein lifetimes in the mouse brain reveal differences across tissues and subcellular fractions. Nat Commun 2018; 9:4230. [PMID: 30315172 PMCID: PMC6185916 DOI: 10.1038/s41467-018-06519-0] [Citation(s) in RCA: 165] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Accepted: 09/07/2018] [Indexed: 01/03/2023] Open
Abstract
The turnover of brain proteins is critical for organism survival, and its perturbations are linked to pathology. Nevertheless, protein lifetimes have been difficult to obtain in vivo. They are readily measured in vitro by feeding cells with isotopically labeled amino acids, followed by mass spectrometry analyses. In vivo proteins are generated from at least two sources: labeled amino acids from the diet, and non-labeled amino acids from the degradation of pre-existing proteins. This renders measurements difficult. Here we solved this problem rigorously with a workflow that combines mouse in vivo isotopic labeling, mass spectrometry, and mathematical modeling. We also established several independent approaches to test and validate the results. This enabled us to measure the accurate lifetimes of ~3500 brain proteins. The high precision of our data provided a large set of biologically significant observations, including pathway-, organelle-, organ-, or cell-specific effects, along with a comprehensive catalog of extremely long-lived proteins (ELLPs). Measuring precise protein turnover rates in animals is technically challenging at the proteomic level. Here, Fornasiero and colleagues use isotopic labeling with mass spectrometry and mathematical modeling to accurately determine protein lifetimes in the mouse brain
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Affiliation(s)
- Eugenio F Fornasiero
- Department of Neuro- and Sensory Physiology, University Medical Center Göttingen, Cluster of Excellence Nanoscale Microscopy and Molecular Physiology of the Brain, 37073, Göttingen, Germany.
| | - Sunit Mandad
- Department of Neuro- and Sensory Physiology, University Medical Center Göttingen, Cluster of Excellence Nanoscale Microscopy and Molecular Physiology of the Brain, 37073, Göttingen, Germany.,Department of Clinical Chemistry, University Medical Center Göttingen, 37077, Göttingen, Germany.,Bioanalytical Mass Spectrometry Group, Max Planck Institute of Biophysical Chemistry, 37077, Göttingen, Germany
| | - Hanna Wildhagen
- Department of Neuro- and Sensory Physiology, University Medical Center Göttingen, Cluster of Excellence Nanoscale Microscopy and Molecular Physiology of the Brain, 37073, Göttingen, Germany
| | - Mihai Alevra
- Department of Neuro- and Sensory Physiology, University Medical Center Göttingen, Cluster of Excellence Nanoscale Microscopy and Molecular Physiology of the Brain, 37073, Göttingen, Germany
| | - Burkhard Rammner
- Department of Neuro- and Sensory Physiology, University Medical Center Göttingen, Cluster of Excellence Nanoscale Microscopy and Molecular Physiology of the Brain, 37073, Göttingen, Germany
| | - Sarva Keihani
- Department of Neuro- and Sensory Physiology, University Medical Center Göttingen, Cluster of Excellence Nanoscale Microscopy and Molecular Physiology of the Brain, 37073, Göttingen, Germany
| | - Felipe Opazo
- Department of Neuro- and Sensory Physiology, University Medical Center Göttingen, Cluster of Excellence Nanoscale Microscopy and Molecular Physiology of the Brain, 37073, Göttingen, Germany.,Center for Biostructural Imaging of Neurodegeneration (BIN), 37075, Göttingen, Germany
| | - Inga Urban
- Genes and Behavior Department, Max Planck Institute of Biophysical Chemistry, 37073, Göttingen, Germany
| | - Till Ischebeck
- Department of Plant Biochemistry, Albrecht-von-Haller-Institute, Georg-August-University, 37073, Göttingen, Germany
| | - M Sadman Sakib
- Laboratory of Epigenetics in Neurodegenerative Diseases, German Center for Neurodegenerative Diseases (DZNE), 37075, Göttingen, Germany
| | - Maryam K Fard
- German Center for Neurodegenerative Disease (DZNE), 81377, Munich, Germany
| | - Koray Kirli
- Department of Cellular Logistics, Max Planck Institute for Biophysical Chemistry, 37077, Göttingen, Germany
| | - Tonatiuh Pena Centeno
- Laboratory of Computational Systems Biology, German Center for Neurodegenerative Diseases (DZNE), 37075, Göttingen, Germany
| | - Ramon O Vidal
- Laboratory of Computational Systems Biology, German Center for Neurodegenerative Diseases (DZNE), 37075, Göttingen, Germany
| | - Raza-Ur Rahman
- Laboratory of Computational Systems Biology, German Center for Neurodegenerative Diseases (DZNE), 37075, Göttingen, Germany
| | - Eva Benito
- Laboratory of Epigenetics in Neurodegenerative Diseases, German Center for Neurodegenerative Diseases (DZNE), 37075, Göttingen, Germany
| | - André Fischer
- Laboratory of Epigenetics in Neurodegenerative Diseases, German Center for Neurodegenerative Diseases (DZNE), 37075, Göttingen, Germany.,Department of Psychiatry and Psychotherapy, University Medical Center Göttingen, 37075, Göttingen, Germany
| | - Sven Dennerlein
- Department of Cellular Biochemistry, University Medical Center Göttingen, 37077, Göttingen, Germany.,Max Planck Institute for Biophysical Chemistry, Göttingen, 37077, Germany
| | - Peter Rehling
- Department of Cellular Biochemistry, University Medical Center Göttingen, 37077, Göttingen, Germany.,Max Planck Institute for Biophysical Chemistry, Göttingen, 37077, Germany
| | - Ivo Feussner
- Department of Plant Biochemistry, Albrecht-von-Haller-Institute, Georg-August-University, 37073, Göttingen, Germany
| | - Stefan Bonn
- Laboratory of Computational Systems Biology, German Center for Neurodegenerative Diseases (DZNE), 37075, Göttingen, Germany.,Institute of Medical Systems Biology, Center for Molecular Neurobiology (ZMNH), University Medical Center Hamburg-Eppendorf (UKE), 20246, Hamburg, Germany.,German Center for Neurodegenerative Diseases (DZNE), 72076, Tübingen, Germany
| | - Mikael Simons
- German Center for Neurodegenerative Disease (DZNE), 81377, Munich, Germany.,Munich Cluster for Systems Neurology (SyNergy), 81377, Munich, Germany.,Institute of Neuronal Cell Biology, Technical University Munich, 80805, Munich, Germany
| | - Henning Urlaub
- Department of Clinical Chemistry, University Medical Center Göttingen, 37077, Göttingen, Germany. .,Bioanalytical Mass Spectrometry Group, Max Planck Institute of Biophysical Chemistry, 37077, Göttingen, Germany.
| | - Silvio O Rizzoli
- Department of Neuro- and Sensory Physiology, University Medical Center Göttingen, Cluster of Excellence Nanoscale Microscopy and Molecular Physiology of the Brain, 37073, Göttingen, Germany. .,Center for Biostructural Imaging of Neurodegeneration (BIN), 37075, Göttingen, Germany.
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21
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Pontecorboli G, Figueras I Ventura RM, Carlosena A, Benito E, Prat-Gonzales S, Padeletti L, Mont L. Use of delayed-enhancement magnetic resonance imaging for fibrosis detection in the atria: a review. Europace 2018; 19:180-189. [PMID: 28172967 DOI: 10.1093/europace/euw053] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2015] [Accepted: 02/02/2016] [Indexed: 11/13/2022] Open
Abstract
This paper presents a review of the different approaches existing in the literature to detect and quantify fibrosis in contrast-enhanced magnetic resonance images of the left atrial wall. The paper provides a critical analysis of the different methods, stating their advantages and limitations, and providing detailed analysis on the possible sources of variability in the final amount of detected fibrosis coming from the use of different techniques.
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Affiliation(s)
| | | | | | - Eva Benito
- Hospital Clinic, Universitat de Barcelona, Catalonia, Spain
| | | | - Luigi Padeletti
- Department of Heart and Vessels, University of Florence, Florence, Italy.,IRCCS Multimedica, Milan, Italy
| | - Lluís Mont
- Hospital Clinic, Universitat de Barcelona, Catalonia, Spain
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22
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Scandaglia M, Lopez-Atalaya JP, Medrano-Fernandez A, Lopez-Cascales MT, Del Blanco B, Lipinski M, Benito E, Olivares R, Iwase S, Shi Y, Barco A. Loss of Kdm5c Causes Spurious Transcription and Prevents the Fine-Tuning of Activity-Regulated Enhancers in Neurons. Cell Rep 2018; 21:47-59. [PMID: 28978483 DOI: 10.1016/j.celrep.2017.09.014] [Citation(s) in RCA: 67] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2017] [Revised: 07/29/2017] [Accepted: 09/04/2017] [Indexed: 12/17/2022] Open
Abstract
During development, chromatin-modifying enzymes regulate both the timely establishment of cell-type-specific gene programs and the coordinated repression of alternative cell fates. To dissect the role of one such enzyme, the intellectual-disability-linked lysine demethylase 5C (Kdm5c), in the developing and adult brain, we conducted parallel behavioral, transcriptomic, and epigenomic studies in Kdm5c-null and forebrain-restricted inducible knockout mice. Together, genomic analyses and functional assays demonstrate that Kdm5c plays a critical role as a repressor responsible for the developmental silencing of germline genes during cellular differentiation and in fine-tuning activity-regulated enhancers during neuronal maturation. Although the importance of these functions declines after birth, Kdm5c retains an important genome surveillance role preventing the incorrect activation of non-neuronal and cryptic promoters in adult neurons.
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Affiliation(s)
- Marilyn Scandaglia
- Instituto de Neurociencias (Universidad Miguel Hernández-Consejo Superior de Investigaciones Científicas), Molecular Neurobiology and Neuropathology Unit, Av. Santiago Ramón y Cajal s/n, Sant Joan d'Alacant, 03550 Alicante, Spain
| | - Jose P Lopez-Atalaya
- Instituto de Neurociencias (Universidad Miguel Hernández-Consejo Superior de Investigaciones Científicas), Molecular Neurobiology and Neuropathology Unit, Av. Santiago Ramón y Cajal s/n, Sant Joan d'Alacant, 03550 Alicante, Spain
| | - Alejandro Medrano-Fernandez
- Instituto de Neurociencias (Universidad Miguel Hernández-Consejo Superior de Investigaciones Científicas), Molecular Neurobiology and Neuropathology Unit, Av. Santiago Ramón y Cajal s/n, Sant Joan d'Alacant, 03550 Alicante, Spain
| | - Maria T Lopez-Cascales
- Instituto de Neurociencias (Universidad Miguel Hernández-Consejo Superior de Investigaciones Científicas), Molecular Neurobiology and Neuropathology Unit, Av. Santiago Ramón y Cajal s/n, Sant Joan d'Alacant, 03550 Alicante, Spain
| | - Beatriz Del Blanco
- Instituto de Neurociencias (Universidad Miguel Hernández-Consejo Superior de Investigaciones Científicas), Molecular Neurobiology and Neuropathology Unit, Av. Santiago Ramón y Cajal s/n, Sant Joan d'Alacant, 03550 Alicante, Spain
| | - Michal Lipinski
- Instituto de Neurociencias (Universidad Miguel Hernández-Consejo Superior de Investigaciones Científicas), Molecular Neurobiology and Neuropathology Unit, Av. Santiago Ramón y Cajal s/n, Sant Joan d'Alacant, 03550 Alicante, Spain
| | - Eva Benito
- Instituto de Neurociencias (Universidad Miguel Hernández-Consejo Superior de Investigaciones Científicas), Molecular Neurobiology and Neuropathology Unit, Av. Santiago Ramón y Cajal s/n, Sant Joan d'Alacant, 03550 Alicante, Spain
| | - Roman Olivares
- Instituto de Neurociencias (Universidad Miguel Hernández-Consejo Superior de Investigaciones Científicas), Molecular Neurobiology and Neuropathology Unit, Av. Santiago Ramón y Cajal s/n, Sant Joan d'Alacant, 03550 Alicante, Spain
| | - Shigeki Iwase
- Department of Human Genetics, University of Michigan, 5815 Medical Science II, Ann Arbor, MI 48109, USA
| | - Yang Shi
- Division of Newborn Medicine, Boston Children's Hospital, Boston, MA 02115, USA; Department of Cell Biology, Harvard Medical School, 300 Longwood Avenue, Boston, MA 02115, USA
| | - Angel Barco
- Instituto de Neurociencias (Universidad Miguel Hernández-Consejo Superior de Investigaciones Científicas), Molecular Neurobiology and Neuropathology Unit, Av. Santiago Ramón y Cajal s/n, Sant Joan d'Alacant, 03550 Alicante, Spain.
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23
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Bisbal F, Alarcón F, Ferrero-de-Loma-Osorio A, González-Ferrer JJ, Alonso C, Pachón M, Tizón H, Cabanas-Grandío P, Sanchez M, Benito E, Teis A, Ruiz-Granell R, Pérez-Villacastín J, Viñolas X, Arias MA, Vallés E, García-Campo E, Fernández-Lozano I, Villuendas R, Mont L. Left atrial geometry and outcome of atrial fibrillation ablation: results from the multicentre LAGO-AF study. Eur Heart J Cardiovasc Imaging 2018; 19:1002-1009. [DOI: 10.1093/ehjci/jey060] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/28/2017] [Accepted: 04/03/2018] [Indexed: 11/14/2022] Open
Affiliation(s)
- Felipe Bisbal
- Heart Institute (iCor), University Hospital Germans Trias i Pujol, Ctra Canyet s/n, Badalona, Barcelona, Spain
- CIBERCV, Instituto de Salud Carlos III, Madrid, Spain
| | - Francisco Alarcón
- Atrial Fibrillation Unit (UFA), Hospital Clinic, Universitat de Barcelona, IDIBAPS, Villarroel 170, Barcelona, Spain
| | | | - Juan Jose González-Ferrer
- CIBERCV, Instituto de Salud Carlos III, Madrid, Spain
- Hospital Clinico San Carlos, Calle del Prof Martín Lagos, s/n, Madrid, Spain
| | - Concepción Alonso
- Hospital de la Santa Creu i Sant Pau, Carrer de Sant Quintí, 89, Barcelona, Spain
| | - Marta Pachón
- Hospital Virgen de la Salud, Av. de Barber, 30, Toledo, Spain
| | - Helena Tizón
- Hospital del Mar, Passeig Marîtim, 25-29, Barcelona, Spain
| | | | - Manuel Sanchez
- Hospital Puerta de Hierro, Calle Manuel de Falla, 1, Majadahonda, Madrid, Spain
| | - Eva Benito
- Atrial Fibrillation Unit (UFA), Hospital Clinic, Universitat de Barcelona, IDIBAPS, Villarroel 170, Barcelona, Spain
| | - Albert Teis
- Heart Institute (iCor), University Hospital Germans Trias i Pujol, Ctra Canyet s/n, Badalona, Barcelona, Spain
| | | | - Julián Pérez-Villacastín
- CIBERCV, Instituto de Salud Carlos III, Madrid, Spain
- Hospital Clinico San Carlos, Calle del Prof Martín Lagos, s/n, Madrid, Spain
| | - Xavier Viñolas
- Hospital de la Santa Creu i Sant Pau, Carrer de Sant Quintí, 89, Barcelona, Spain
| | | | | | | | | | - Roger Villuendas
- Heart Institute (iCor), University Hospital Germans Trias i Pujol, Ctra Canyet s/n, Badalona, Barcelona, Spain
| | - Lluís Mont
- CIBERCV, Instituto de Salud Carlos III, Madrid, Spain
- Atrial Fibrillation Unit (UFA), Hospital Clinic, Universitat de Barcelona, IDIBAPS, Villarroel 170, Barcelona, Spain
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Bisbal Van Bylen F, Mont L, Ferrero A, Gonzalez-Ferrer JJ, Alonso C, Pachon M, Valles E, Cabanas-Grandio P, Fernandez-Lozano I, Benito E, Sarrias A, Ruiz-Granell R, Perez-Villacastin J, Vinolas X, Arias MA. 529Diagnostic-to-ablation Time in Atrial Fibrillation: A modifiable factor relevant to clinical outcome. Europace 2018. [DOI: 10.1093/europace/euy015.296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
| | - L Mont
- Hospital Clinic de Barcelona, Barcelona, Spain
| | - A Ferrero
- University Hospital Clinic of Valencia, Valencia, Spain
| | | | - C Alonso
- Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
| | - M Pachon
- Hospital Virgen de la Salud, Toledo, Spain
| | - E Valles
- Hospital del Mar, Barcelona, Spain
| | | | | | - E Benito
- Hospital Clinic de Barcelona, Barcelona, Spain
| | - A Sarrias
- Germans Trias i Pujol University Hospital, Badalona, Spain
| | | | | | - X Vinolas
- Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
| | - M A Arias
- Hospital Virgen de la Salud, Toledo, Spain
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25
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Caixal Vila G, Benito E, Alarcon F, Borras R, Cozzari J, Munoz M, Perea R, Chipa F, Fernandez H, Tolosana JM, Berruezo A, Arbelo E, Guasch E, Matiello M, Mont L. P826How to improve the success of atrial fibrillation ablation. Evaluation of cardiac magnetic resonance and fractionated electrograms in first ablation procedures. Europace 2018. [DOI: 10.1093/europace/euy015.430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
| | - E Benito
- Barcelona Clinic Hospital, Barcelona, Spain
| | - F Alarcon
- Barcelona Clinic Hospital, Barcelona, Spain
| | - R Borras
- Barcelona Clinic Hospital, Barcelona, Spain
| | - J Cozzari
- Barcelona Clinic Hospital, Barcelona, Spain
| | - M Munoz
- Barcelona Clinic Hospital, Barcelona, Spain
| | - R Perea
- Barcelona Clinic Hospital, Barcelona, Spain
| | - F Chipa
- Barcelona Clinic Hospital, Barcelona, Spain
| | | | | | - A Berruezo
- Barcelona Clinic Hospital, Barcelona, Spain
| | - E Arbelo
- Barcelona Clinic Hospital, Barcelona, Spain
| | - E Guasch
- Barcelona Clinic Hospital, Barcelona, Spain
| | - M Matiello
- Barcelona Clinic Hospital, Barcelona, Spain
| | - L Mont
- Barcelona Clinic Hospital, Barcelona, Spain
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26
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Margulescu AD, Enomoto N, Alarcon F, Fernandez H, Benito E, Guasch E, Mont L. P373Left atrial pressure correlates with atrial sphericity but not with the degree of atrial dilatation and scar burden, in patients who underwent pulmonary vein isolation. Europace 2018. [DOI: 10.1093/europace/euy015.184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- A D Margulescu
- Hospital Clínic, Universitat de Barcelona. Institut d’Investigacions Biomèdiques August Pi i Sunyer , Institut Clínic Cardiovascular, Barcelona, Spain
| | - N Enomoto
- Hospital Clínic, Universitat de Barcelona. Institut d’Investigacions Biomèdiques August Pi i Sunyer , Institut Clínic Cardiovascular, Barcelona, Spain
| | - F Alarcon
- Hospital Clínic, Universitat de Barcelona. Institut d’Investigacions Biomèdiques August Pi i Sunyer , Institut Clínic Cardiovascular, Barcelona, Spain
| | - H Fernandez
- Hospital Clínic, Universitat de Barcelona. Institut d’Investigacions Biomèdiques August Pi i Sunyer , Institut Clínic Cardiovascular, Barcelona, Spain
| | - E Benito
- Hospital Clínic, Universitat de Barcelona. Institut d’Investigacions Biomèdiques August Pi i Sunyer , Institut Clínic Cardiovascular, Barcelona, Spain
| | - E Guasch
- Hospital Clínic, Universitat de Barcelona. Institut d’Investigacions Biomèdiques August Pi i Sunyer , Institut Clínic Cardiovascular, Barcelona, Spain
| | - L Mont
- Hospital Clínic, Universitat de Barcelona. Institut d’Investigacions Biomèdiques August Pi i Sunyer , Institut Clínic Cardiovascular, Barcelona, Spain
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27
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Tomas-Roig J, Benito E, Agis-Balboa RC, Piscitelli F, Hoyer-Fender S, Di Marzo V, Havemann-Reinecke U. Chronic exposure to cannabinoids during adolescence causes long-lasting behavioral deficits in adult mice. Addict Biol 2017; 22:1778-1789. [PMID: 27578457 PMCID: PMC5697667 DOI: 10.1111/adb.12446] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2016] [Revised: 08/07/2016] [Accepted: 08/09/2016] [Indexed: 01/23/2023]
Abstract
Regular use of marijuana during adolescence enhances the risk of long-lasting neurobiological changes in adulthood. The present study was aimed at assessing the effect of long-term administration of the synthetic cannabinoid WIN55212.2 during adolescence in young adult mice. Adolescent mice aged 5 weeks were subjected daily to the pharmacological action of WIN55212.2 for 3 weeks and were then left undisturbed in their home cage for a 5-week period and finally evaluated by behavioral testing. Mice that received the drug during adolescence showed memory impairment in the Morris water maze, as well as a dose-dependent memory impairment in fear conditioning. In addition, the administration of 3 mg/kg WIN55212.2 in adolescence increased adult hippocampal AEA levels and promoted DNA hypermethylation at the intragenic region of the intracellular signaling modulator Rgs7, which was accompanied by a lower rate of mRNA transcription of this gene, suggesting a potential causal relation. Although the concrete mechanisms underlying the behavioral observations remain to be elucidated, we demonstrate that long-term administration of 3 mg/kg of WIN during adolescence leads to increased endocannabinoid levels and altered Rgs7 expression in adulthood and establish a potential link to epigenetic changes.
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Affiliation(s)
- J Tomas-Roig
- Department of Psychiatry and Psychotherapy; University of Göttingen; Germany
- Center Nanoscale Microscopy and Molecular Physiology of the Brain (CNMPB); Germany
| | - E Benito
- Research Group for Epigenetic Mechanisms in Dementia; German Center for Neurodegenerative Diseases (DZNE); Germany
| | - RC Agis-Balboa
- Department of Psychiatry and Psychotherapy; University Medical Center Göttingen; Germany
- Instituto de Investigación Sanitaria Galicia Sur; Spain
| | - F Piscitelli
- Endocannabinoid Research Group; Institute of Biomolecular Chemistry; Italy
| | - S Hoyer-Fender
- Johann-Friedrich-Blumenbach Institute for Zoology and Anthropology; Developmental Biology; Germany
| | - V Di Marzo
- Endocannabinoid Research Group; Institute of Biomolecular Chemistry; Italy
| | - U Havemann-Reinecke
- Department of Psychiatry and Psychotherapy; University of Göttingen; Germany
- Center Nanoscale Microscopy and Molecular Physiology of the Brain (CNMPB); Germany
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28
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Agís-Balboa RC, Pinheiro PS, Rebola N, Kerimoglu C, Benito E, Gertig M, Bahari-Javan S, Jain G, Burkhardt S, Delalle I, Jatzko A, Dettenhofer M, Zunszain PA, Schmitt A, Falkai P, Pape JC, Binder EB, Mulle C, Fischer A, Sananbenesi F. Formin 2 links neuropsychiatric phenotypes at young age to an increased risk for dementia. EMBO J 2017; 36:2815-2828. [PMID: 28768717 PMCID: PMC5623844 DOI: 10.15252/embj.201796821] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2017] [Revised: 06/23/2017] [Accepted: 06/27/2017] [Indexed: 12/12/2022] Open
Abstract
Age-associated memory decline is due to variable combinations of genetic and environmental risk factors. How these risk factors interact to drive disease onset is currently unknown. Here we begin to elucidate the mechanisms by which post-traumatic stress disorder (PTSD) at a young age contributes to an increased risk to develop dementia at old age. We show that the actin nucleator Formin 2 (Fmn2) is deregulated in PTSD and in Alzheimer's disease (AD) patients. Young mice lacking the Fmn2 gene exhibit PTSD-like phenotypes and corresponding impairments of synaptic plasticity, while the consolidation of new memories is unaffected. However, Fmn2 mutant mice develop accelerated age-associated memory decline that is further increased in the presence of additional risk factors and is mechanistically linked to a loss of transcriptional homeostasis. In conclusion, our data present a new approach to explore the connection between AD risk factors across life span and provide mechanistic insight to the processes by which neuropsychiatric diseases at a young age affect the risk for developing dementia.
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Affiliation(s)
- Roberto Carlos Agís-Balboa
- Department for Epigenetics and Systems Medicine in Neurodegenerative Diseases, German Center for Neurodegenerative Diseases (DZNE) Göttingen, Göttingen, Germany
| | - Paulo S Pinheiro
- Interdisciplinary Institute for Neuroscience, University of Bordeaux, Bordeaux, France
- CNRS UMR 5297, Bordeaux, France
- Department of Pathology and Laboratory Medicine, Boston University School of Medicine, Boston, MA, USA
| | - Nelson Rebola
- Interdisciplinary Institute for Neuroscience, University of Bordeaux, Bordeaux, France
- CNRS UMR 5297, Bordeaux, France
| | - Cemil Kerimoglu
- Department for Epigenetics and Systems Medicine in Neurodegenerative Diseases, German Center for Neurodegenerative Diseases (DZNE) Göttingen, Göttingen, Germany
- Department of Psychiatry and Psychotherapy, University Medical Center Göttingen, Göttingen, Germany
| | - Eva Benito
- Department for Epigenetics and Systems Medicine in Neurodegenerative Diseases, German Center for Neurodegenerative Diseases (DZNE) Göttingen, Göttingen, Germany
| | - Michael Gertig
- Department for Epigenetics and Systems Medicine in Neurodegenerative Diseases, German Center for Neurodegenerative Diseases (DZNE) Göttingen, Göttingen, Germany
| | - Sanaz Bahari-Javan
- Department of Psychiatry and Psychotherapy, University Medical Center Göttingen, Göttingen, Germany
| | - Gaurav Jain
- Department for Epigenetics and Systems Medicine in Neurodegenerative Diseases, German Center for Neurodegenerative Diseases (DZNE) Göttingen, Göttingen, Germany
| | - Susanne Burkhardt
- Department for Epigenetics and Systems Medicine in Neurodegenerative Diseases, German Center for Neurodegenerative Diseases (DZNE) Göttingen, Göttingen, Germany
| | - Ivana Delalle
- Department of Pathology and Laboratory Medicine, Boston University School of Medicine, Boston, MA, USA
| | - Alexander Jatzko
- Department of Psychosomatics, Westpfalzklinikum-Kaiserslautern, Teaching Hospital, University of Mainz, Mainz, Germany
| | - Markus Dettenhofer
- CEITEC - Central European Institute of Technology, Masaryk University, Brno, Czech Republic
| | - Patricia A Zunszain
- Stress, Psychiatry and Immunology Laboratory, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, UK
| | - Andrea Schmitt
- Department of Psychiatry and Psychotherapy, LMU Munich, Munich, Germany
- Laboratory of Neuroscience (LIM27), Institute of Psychiatry, University of Sao Paulo, São Paulo, Brazil
| | - Peter Falkai
- Department of Psychiatry and Psychotherapy, LMU Munich, Munich, Germany
| | - Julius C Pape
- Department of Translational Research in Psychiatry, Max Planck Institute of Psychiatry, Munich, Germany
| | - Elisabeth B Binder
- Department of Translational Research in Psychiatry, Max Planck Institute of Psychiatry, Munich, Germany
| | - Christophe Mulle
- Interdisciplinary Institute for Neuroscience, University of Bordeaux, Bordeaux, France
- CNRS UMR 5297, Bordeaux, France
| | - Andre Fischer
- Department for Epigenetics and Systems Medicine in Neurodegenerative Diseases, German Center for Neurodegenerative Diseases (DZNE) Göttingen, Göttingen, Germany
- Department of Psychiatry and Psychotherapy, University Medical Center Göttingen, Göttingen, Germany
| | - Farahnaz Sananbenesi
- Department for Epigenetics and Systems Medicine in Neurodegenerative Diseases, German Center for Neurodegenerative Diseases (DZNE) Göttingen, Göttingen, Germany
- Research Group for Genome Dynamics in Brain Diseases, Göttingen, Germany
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Alarcon F, Cabanelas N, Izquierdo M, Benito E, Chipa F, Prat S, Pereda C, Figueras R, Linhart M, Berruezo A, Mont L. 66Comparison of gaps detected by delayed-enhancement cardiac magnetic resonance after radiofrequency and cryoballon ablation of paroxysmal atrial fibrillation: a case-control study. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx501.66] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Linhart M, Benito E, Alarcon F, Carlosena A, Cabanelas N, Guasch E, Arbelo E, Tolosana J, Berruezo A, Mont L. P2659The length but not the number of late-enhanced gadolinum MRI gaps was associated with increased risk of recurrences of atrial fibrillation (AF) after pulmonary vein isolation in paroxysmal AF patients. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx502.p2659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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31
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Figueras I Ventura RM, Benito E, Alarcon F, Prat S, Perea RJ, Chipa F, Cozzari J, Berruezo A, Mont L. P1417Ablation lesions from laser and radio-frequency pulmonary vein isolation compared by magnetic resonance imaging. Europace 2017. [DOI: 10.1093/ehjci/eux158.045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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32
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Benito E, Cozzari J, Cabanelas N, Nunez-Garcia M, Guasch E, Alarcon F, Figueras R, Prats S, Linhart M, Chipa F, Margulescu A, Berruezo A, Mont L. P892Predominant distribution of atrial fibrosis around the left inferior pulmonary vein identified by LGE-MRI in patients with atrial fibrilation. Europace 2017. [DOI: 10.1093/ehjci/eux151.074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Alarcon F, Cabanelas N, Izquierdo M, Benito E, Chipa F, Prat S, Pereda C, Figueras R, Berruezo A, Mont L. P345Comparison of cryoballoon versus radiofrequency gaps detected by delayed-enhancement cardiac magnetic resonance after ablation of paroxysmal atrial fibrillation: a case-control study. Europace 2017. [DOI: 10.1093/ehjci/eux141.071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Nagarajan S, Benito E, Fischer A, Johnsen SA. H4K12ac is regulated by estrogen receptor-alpha and is associated with BRD4 function and inducible transcription. Oncotarget 2016; 6:7305-17. [PMID: 25788266 PMCID: PMC4466686 DOI: 10.18632/oncotarget.3439] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2014] [Accepted: 01/28/2015] [Indexed: 11/25/2022] Open
Abstract
Hormone-dependent gene expression requires dynamic and coordinated epigenetic changes. Estrogen receptor-positive (ER+) breast cancer is particularly dependent upon extensive chromatin remodeling and changes in histone modifications for the induction of hormone-responsive gene expression. Our previous studies established an important role of bromodomain-containing protein-4 (BRD4) in promoting estrogen-regulated transcription and proliferation of ER+ breast cancer cells. Here, we investigated the association between genome-wide occupancy of histone H4 acetylation at lysine 12 (H4K12ac) and BRD4 in the context of estrogen-induced transcription. Similar to BRD4, we observed that H4K12ac occupancy increases near the transcription start sites (TSS) of estrogen-induced genes as well as at distal ERα binding sites in an estrogen-dependent manner. Interestingly, H4K12ac occupancy highly correlates with BRD4 binding and enhancer RNA production on ERα-positive enhancers. Consistent with an importance in estrogen-induced gene transcription, H4K12ac occupancy globally increased in ER-positive cells relative to ER-negative cells and these levels were further increased by estrogen treatment in an ERα-dependent manner. Together, these findings reveal a strong correlation between H4K12ac and BRD4 occupancy with estrogen-dependent gene transcription and further suggest that modulators of H4K12ac and BRD4 may serve as new therapeutic targets for hormone-dependent cancers.
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Affiliation(s)
- Sankari Nagarajan
- Department of General, Visceral and Pediatric Surgery, University Medical Center Göttingen, Göttingen, Germany
| | - Eva Benito
- Department of Psychiatry and Psychotherapy, University Medical Center Göttingen, Göttingen, Germany
| | - Andre Fischer
- Department of Psychiatry and Psychotherapy, University Medical Center Göttingen, Göttingen, Germany.,Research Group for Epigenetics in Neurodegenerative Diseases, German Center for Neurodegenerative Diseases (DZNE) Göttingen, Göttingen, Germany
| | - Steven A Johnsen
- Department of General, Visceral and Pediatric Surgery, University Medical Center Göttingen, Göttingen, Germany
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Scandaglia M, Benito E, Morenilla-Palao C, Fiorenza A, Del Blanco B, Coca Y, Herrera E, Barco A. Fine-tuned SRF activity controls asymmetrical neuronal outgrowth: implications for cortical migration, neural tissue lamination and circuit assembly. Sci Rep 2015; 5:17470. [PMID: 26638868 PMCID: PMC4671020 DOI: 10.1038/srep17470] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2015] [Accepted: 10/29/2015] [Indexed: 01/09/2023] Open
Abstract
The stimulus-regulated transcription factor Serum Response Factor (SRF) plays an important role in diverse neurodevelopmental processes related to structural plasticity and motile functions, although its precise mechanism of action has not yet been established. To further define the role of SRF in neural development and distinguish between cell-autonomous and non cell-autonomous effects, we bidirectionally manipulated SRF activity through gene transduction assays that allow the visualization of individual neurons and their comparison with neighboring control cells. In vitro assays showed that SRF promotes survival and filopodia formation and is required for normal asymmetric neurite outgrowth, indicating that its activation favors dendrite enlargement versus branching. In turn, in vivo experiments demonstrated that SRF-dependent regulation of neuronal morphology has important consequences in the developing cortex and retina, affecting neuronal migration, dendritic and axonal arborization and cell positioning in these laminated tissues. Overall, our results show that the controlled and timely activation of SRF is essential for the coordinated growth of neuronal processes, suggesting that this event regulates the switch between neuronal growth and branching during developmental processes.
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Affiliation(s)
- Marilyn Scandaglia
- Instituto de Neurociencias (Universidad Miguel Hernández-Consejo Superior de Investigaciones Científicas). Av. Santiago Ramón y Cajal s/n. Sant Joan d'Alacant. 03550. Alicante, Spain
| | - Eva Benito
- Instituto de Neurociencias (Universidad Miguel Hernández-Consejo Superior de Investigaciones Científicas). Av. Santiago Ramón y Cajal s/n. Sant Joan d'Alacant. 03550. Alicante, Spain
| | - Cruz Morenilla-Palao
- Instituto de Neurociencias (Universidad Miguel Hernández-Consejo Superior de Investigaciones Científicas). Av. Santiago Ramón y Cajal s/n. Sant Joan d'Alacant. 03550. Alicante, Spain
| | - Anna Fiorenza
- Instituto de Neurociencias (Universidad Miguel Hernández-Consejo Superior de Investigaciones Científicas). Av. Santiago Ramón y Cajal s/n. Sant Joan d'Alacant. 03550. Alicante, Spain
| | - Beatriz Del Blanco
- Instituto de Neurociencias (Universidad Miguel Hernández-Consejo Superior de Investigaciones Científicas). Av. Santiago Ramón y Cajal s/n. Sant Joan d'Alacant. 03550. Alicante, Spain
| | - Yaiza Coca
- Instituto de Neurociencias (Universidad Miguel Hernández-Consejo Superior de Investigaciones Científicas). Av. Santiago Ramón y Cajal s/n. Sant Joan d'Alacant. 03550. Alicante, Spain
| | - Eloísa Herrera
- Instituto de Neurociencias (Universidad Miguel Hernández-Consejo Superior de Investigaciones Científicas). Av. Santiago Ramón y Cajal s/n. Sant Joan d'Alacant. 03550. Alicante, Spain
| | - Angel Barco
- Instituto de Neurociencias (Universidad Miguel Hernández-Consejo Superior de Investigaciones Científicas). Av. Santiago Ramón y Cajal s/n. Sant Joan d'Alacant. 03550. Alicante, Spain
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Benito E, Urbanke H, Ramachandran B, Barth J, Halder R, Awasthi A, Jain G, Capece V, Burkhardt S, Navarro-Sala M, Nagarajan S, Schütz AL, Johnsen SA, Bonn S, Lührmann R, Dean C, Fischer A. HDAC inhibitor-dependent transcriptome and memory reinstatement in cognitive decline models. J Clin Invest 2015; 125:3572-84. [PMID: 26280576 DOI: 10.1172/jci79942] [Citation(s) in RCA: 128] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2014] [Accepted: 07/08/2015] [Indexed: 12/19/2022] Open
Abstract
Aging and increased amyloid burden are major risk factors for cognitive diseases such as Alzheimer's disease (AD). Effective therapies for these diseases are lacking. Here, we evaluated mouse models of age-associated memory impairment and amyloid deposition to study transcriptome and cell type-specific epigenome plasticity in the brain and peripheral organs. We determined that aging and amyloid pathology are associated with inflammation and impaired synaptic function in the hippocampal CA1 region as the result of epigenetic-dependent alterations in gene expression. In both amyloid and aging models, inflammation was associated with increased gene expression linked to a subset of transcription factors, while plasticity gene deregulation was differentially mediated. Amyloid pathology impaired histone acetylation and decreased expression of plasticity genes, while aging altered H4K12 acetylation-linked differential splicing at the intron-exon junction in neurons, but not nonneuronal cells. Furthermore, oral administration of the clinically approved histone deacetylase inhibitor vorinostat not only restored spatial memory, but also exerted antiinflammatory action and reinstated epigenetic balance and transcriptional homeostasis at the level of gene expression and exon usage. This study provides a systems-level investigation of transcriptome plasticity in the hippocampal CA1 region in aging and AD models and suggests that histone deacetylase inhibitors should be further explored as a cost-effective therapeutic strategy against age-associated cognitive decline.
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37
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Stilling RM, Benito E, Gertig M, Barth J, Capece V, Burkhardt S, Bonn S, Fischer A. De-regulation of gene expression and alternative splicing affects distinct cellular pathways in the aging hippocampus. Front Cell Neurosci 2014; 8:373. [PMID: 25431548 PMCID: PMC4230043 DOI: 10.3389/fncel.2014.00373] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2014] [Accepted: 10/21/2014] [Indexed: 01/20/2023] Open
Abstract
Aging is accompanied by gradually increasing impairment of cognitive abilities and constitutes the main risk factor of neurodegenerative conditions like Alzheimer's disease (AD). The underlying mechanisms are however not well understood. Here we analyze the hippocampal transcriptome of young adult mice and two groups of mice at advanced age using RNA sequencing. This approach enabled us to test differential expression of coding and non-coding transcripts, as well as differential splicing and RNA editing. We report a specific age-associated gene expression signature that is associated with major genetic risk factors for late-onset AD (LOAD). This signature is dominated by neuroinflammatory processes, specifically activation of the complement system at the level of increased gene expression, while de-regulation of neuronal plasticity appears to be mediated by compromised RNA splicing.
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Affiliation(s)
- Roman M Stilling
- Department of Psychiatry and Psychotherapy, University Medical Center Göttingen Göttingen, Germany ; Research Group for Epigenetics in Neurodegenerative Diseases, German Center for Neurodegenerative Diseases (DZNE) Göttingen Göttingen, Germany
| | - Eva Benito
- Research Group for Epigenetics in Neurodegenerative Diseases, German Center for Neurodegenerative Diseases (DZNE) Göttingen Göttingen, Germany
| | - Michael Gertig
- Research Group for Epigenetics in Neurodegenerative Diseases, German Center for Neurodegenerative Diseases (DZNE) Göttingen Göttingen, Germany
| | - Jonas Barth
- Research Group for Epigenetics in Neurodegenerative Diseases, German Center for Neurodegenerative Diseases (DZNE) Göttingen Göttingen, Germany
| | - Vincenzo Capece
- Research Group for Computational Analysis of Biological Networks, German Center for Neurodegenerative Diseases (DZNE) Göttingen Göttingen, Germany
| | - Susanne Burkhardt
- Research Group for Epigenetics in Neurodegenerative Diseases, German Center for Neurodegenerative Diseases (DZNE) Göttingen Göttingen, Germany
| | - Stefan Bonn
- Research Group for Computational Analysis of Biological Networks, German Center for Neurodegenerative Diseases (DZNE) Göttingen Göttingen, Germany
| | - Andre Fischer
- Department of Psychiatry and Psychotherapy, University Medical Center Göttingen Göttingen, Germany ; Research Group for Epigenetics in Neurodegenerative Diseases, German Center for Neurodegenerative Diseases (DZNE) Göttingen Göttingen, Germany
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Martinez-Hervas S, Navarro I, Garcia-Garcia A, Savall EN, Benito E, Chaves F, Real J, Ascaso J. Oxidative stress and mrna expression after an oral unsaturated fat load test in subjects with abdominal obesity. Atherosclerosis 2014. [DOI: 10.1016/j.atherosclerosis.2014.05.488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Stilling RM, Rönicke R, Benito E, Urbanke H, Capece V, Burkhardt S, Bahari-Javan S, Barth J, Sananbenesi F, Schütz AL, Dyczkowski J, Martinez-Hernandez A, Kerimoglu C, Dent SYR, Bonn S, Reymann KG, Fischer A. K-Lysine acetyltransferase 2a regulates a hippocampal gene expression network linked to memory formation. EMBO J 2014; 33:1912-27. [PMID: 25024434 DOI: 10.15252/embj.201487870] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Neuronal histone acetylation has been linked to memory consolidation, and targeting histone acetylation has emerged as a promising therapeutic strategy for neuropsychiatric diseases. However, the role of histone-modifying enzymes in the adult brain is still far from being understood. Here we use RNA sequencing to screen the levels of all known histone acetyltransferases (HATs) in the hippocampal CA1 region and find that K-acetyltransferase 2a (Kat2a)--a HAT that has not been studied for its role in memory function so far--shows highest expression. Mice that lack Kat2a show impaired hippocampal synaptic plasticity and long-term memory consolidation. We furthermore show that Kat2a regulates a highly interconnected hippocampal gene expression network linked to neuroactive receptor signaling via a mechanism that involves nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB). In conclusion, our data establish Kat2a as a novel and essential regulator of hippocampal memory consolidation.
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Affiliation(s)
- Roman M Stilling
- Department of Psychiatry and Psychotherapy, University Medical Center, Göttingen, Germany
| | - Raik Rönicke
- Research group for Pathophysiology in Dementia, German Center for Neurodegenerative Diseases (DZNE), Magdeburg, Germany
| | - Eva Benito
- Research group for Epigenetics in Neurodegenerative Diseases, German Center for Neurodegenerative Diseases (DZNE), Göttingen, Germany
| | - Hendrik Urbanke
- Research group for Epigenetics in Neurodegenerative Diseases, German Center for Neurodegenerative Diseases (DZNE), Göttingen, Germany
| | - Vincenzo Capece
- Research group for Computational Analysis of Biological Networks, German Center for Neurodegenerative Diseases (DZNE), Göttingen, Germany
| | - Susanne Burkhardt
- Research group for Epigenetics in Neurodegenerative Diseases, German Center for Neurodegenerative Diseases (DZNE), Göttingen, Germany
| | - Sanaz Bahari-Javan
- Research group for Epigenetics in Neurodegenerative Diseases, German Center for Neurodegenerative Diseases (DZNE), Göttingen, Germany
| | - Jonas Barth
- Research group for Epigenetics in Neurodegenerative Diseases, German Center for Neurodegenerative Diseases (DZNE), Göttingen, Germany
| | - Farahnaz Sananbenesi
- Department of Psychiatry and Psychotherapy, University Medical Center, Göttingen, Germany
| | - Anna L Schütz
- Research group for Computational Analysis of Biological Networks, German Center for Neurodegenerative Diseases (DZNE), Göttingen, Germany
| | - Jerzy Dyczkowski
- Research group for Computational Analysis of Biological Networks, German Center for Neurodegenerative Diseases (DZNE), Göttingen, Germany
| | - Ana Martinez-Hernandez
- Research group for Epigenetics in Neurodegenerative Diseases, German Center for Neurodegenerative Diseases (DZNE), Göttingen, Germany
| | - Cemil Kerimoglu
- Department of Psychiatry and Psychotherapy, University Medical Center, Göttingen, Germany
| | - Sharon Y R Dent
- MD Anderson Cancer Center, University of Texas, Smithville, TX, USA
| | - Stefan Bonn
- Research group for Computational Analysis of Biological Networks, German Center for Neurodegenerative Diseases (DZNE), Göttingen, Germany
| | - Klaus G Reymann
- Research group for Pathophysiology in Dementia, German Center for Neurodegenerative Diseases (DZNE), Magdeburg, Germany
| | - Andre Fischer
- Department of Psychiatry and Psychotherapy, University Medical Center, Göttingen, Germany Research group for Epigenetics in Neurodegenerative Diseases, German Center for Neurodegenerative Diseases (DZNE), Göttingen, Germany
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Banzhaf-Strathmann J, Benito E, May S, Arzberger T, Tahirovic S, Kretzschmar H, Fischer A, Edbauer D. MicroRNA-125b induces tau hyperphosphorylation and cognitive deficits in Alzheimer's disease. EMBO J 2014; 33:1667-80. [PMID: 25001178 DOI: 10.15252/embj.201387576] [Citation(s) in RCA: 219] [Impact Index Per Article: 21.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
Sporadic Alzheimer's disease (AD) is the most prevalent form of dementia, but no clear disease-initiating mechanism is known. Aβ deposits and neuronal tangles composed of hyperphosphorylated tau are characteristic for AD. Here, we analyze the contribution of microRNA-125b (miR-125b), which is elevated in AD. In primary neurons, overexpression of miR-125b causes tau hyperphosphorylation and an upregulation of p35, cdk5, and p44/42-MAPK signaling. In parallel, the phosphatases DUSP6 and PPP1CA and the anti-apoptotic factor Bcl-W are downregulated as direct targets of miR-125b. Knockdown of these phosphatases induces tau hyperphosphorylation, and overexpression of PPP1CA and Bcl-W prevents miR-125b-induced tau phosphorylation, suggesting that they mediate the effects of miR-125b on tau. Conversely, suppression of miR-125b in neurons by tough decoys reduces tau phosphorylation and kinase expression/activity. Injecting miR-125b into the hippocampus of mice impairs associative learning and is accompanied by downregulation of Bcl-W, DUSP6, and PPP1CA, resulting in increased tau phosphorylation in vivo. Importantly, DUSP6 and PPP1CA are also reduced in AD brains. These data implicate miR-125b in the pathogenesis of AD by promoting pathological tau phosphorylation.
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Affiliation(s)
| | - Eva Benito
- German Center for Neurodegenerative Diseases, c/o European Neuroscience Institute ENI-G, Göttingen, Germany
| | - Stephanie May
- German Center for Neurodegenerative Diseases, Munich, Germany
| | - Thomas Arzberger
- German Center for Neurodegenerative Diseases, Munich, Germany Center for Neuropathology and Prion Research, Ludwig-Maximilians-University Munich, Munich, Germany Department of Psychiatry and Psychotherapy, Ludwig-Maximilians-University Munich, Munich, Germany
| | | | - Hans Kretzschmar
- Center for Neuropathology and Prion Research, Ludwig-Maximilians-University Munich, Munich, Germany
| | - André Fischer
- German Center for Neurodegenerative Diseases, c/o European Neuroscience Institute ENI-G, Göttingen, Germany Department of Psychiatry and Psychotherapy, University Medical Center, University Göttingen, Göttingen, Germany
| | - Dieter Edbauer
- German Center for Neurodegenerative Diseases, Munich, Germany Adolf Butenandt Institute, Biochemistry, Ludwig-Maximilians-University Munich, Munich, Germany Munich Cluster of Systems Neurology (SyNergy), Munich, Germany
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Yildirim F, Ji S, Kronenberg G, Barco A, Olivares R, Benito E, Dirnagl U, Gertz K, Endres M, Harms C, Meisel A. Histone acetylation and CREB binding protein are required for neuronal resistance against ischemic injury. PLoS One 2014; 9:e95465. [PMID: 24748101 PMCID: PMC3991684 DOI: 10.1371/journal.pone.0095465] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2013] [Accepted: 03/26/2014] [Indexed: 11/19/2022] Open
Abstract
Epigenetic transcriptional regulation by histone acetylation depends on the balance between histone acetyltransferase (HAT) and deacetylase activities (HDAC). Inhibition of HDAC activity provides neuroprotection, indicating that the outcome of cerebral ischemia depends crucially on the acetylation status of histones. In the present study, we characterized the changes in histone acetylation levels in ischemia models of focal cerebral ischemia and identified cAMP-response element binding protein (CREB)–binding protein (CBP) as a crucial factor in the susceptibility of neurons to ischemic stress. Both neuron-specific RNA interference and neurons derived from CBP heterozygous knockout mice showed increased damage after oxygen-glucose deprivation (OGD) in vitro. Furthermore, we demonstrated that ischemic preconditioning by a short (5 min) subthreshold occlusion of the middle cerebral artery (MCA), followed 24 h afterwards by a 30 min occlusion of the MCA, increased histone acetylation levels in vivo. Ischemic preconditioning enhanced CBP recruitment and histone acetylation at the promoter of the neuroprotective gene gelsolin leading to increased gelsolin expression in neurons. Inhibition of CBP's HAT activity attenuated neuronal ischemic preconditioning. Taken together, our findings suggest that the levels of CBP and histone acetylation determine stroke outcome and are crucially associated with the induction of an ischemia-resistant state in neurons.
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Affiliation(s)
- Ferah Yildirim
- Department of Experimental Neurology, Center for Stroke Research Berlin (CSB) and Klinik und Hochschulambulanz für Neurologie, Charité–Universitätsmedizin Berlin, Berlin, Germany
| | - Shengbo Ji
- Department of Experimental Neurology, Center for Stroke Research Berlin (CSB) and Klinik und Hochschulambulanz für Neurologie, Charité–Universitätsmedizin Berlin, Berlin, Germany
| | - Golo Kronenberg
- Department of Experimental Neurology, Center for Stroke Research Berlin (CSB) and Klinik und Hochschulambulanz für Neurologie, Charité–Universitätsmedizin Berlin, Berlin, Germany
- Klinik und Poliklinik für Psychiatrie, Campus Mitte, Charité–Universitätsmedizin Berlin, Berlin, Germany
| | - Angel Barco
- Instituto de Neurociencias de Alicante (Universidad Miguel Hernandez-Consejo Superior de Investigaciones Cientificas), Campus de Sant Joan, Sant Joan d'Alacant, Alicante, Spain
| | - Roman Olivares
- Instituto de Neurociencias de Alicante (Universidad Miguel Hernandez-Consejo Superior de Investigaciones Cientificas), Campus de Sant Joan, Sant Joan d'Alacant, Alicante, Spain
| | - Eva Benito
- Instituto de Neurociencias de Alicante (Universidad Miguel Hernandez-Consejo Superior de Investigaciones Cientificas), Campus de Sant Joan, Sant Joan d'Alacant, Alicante, Spain
| | - Ulrich Dirnagl
- Department of Experimental Neurology, Center for Stroke Research Berlin (CSB) and Klinik und Hochschulambulanz für Neurologie, Charité–Universitätsmedizin Berlin, Berlin, Germany
- ExcellenceCluster NeuroCure, Charité–Universitätsmedizin Berlin, Berlin, Germany
| | - Karen Gertz
- Department of Experimental Neurology, Center for Stroke Research Berlin (CSB) and Klinik und Hochschulambulanz für Neurologie, Charité–Universitätsmedizin Berlin, Berlin, Germany
- ExcellenceCluster NeuroCure, Charité–Universitätsmedizin Berlin, Berlin, Germany
| | - Matthias Endres
- Department of Experimental Neurology, Center for Stroke Research Berlin (CSB) and Klinik und Hochschulambulanz für Neurologie, Charité–Universitätsmedizin Berlin, Berlin, Germany
- ExcellenceCluster NeuroCure, Charité–Universitätsmedizin Berlin, Berlin, Germany
| | - Christoph Harms
- Department of Experimental Neurology, Center for Stroke Research Berlin (CSB) and Klinik und Hochschulambulanz für Neurologie, Charité–Universitätsmedizin Berlin, Berlin, Germany
- * E-mail:
| | - Andreas Meisel
- Department of Experimental Neurology, Center for Stroke Research Berlin (CSB) and Klinik und Hochschulambulanz für Neurologie, Charité–Universitätsmedizin Berlin, Berlin, Germany
- ExcellenceCluster NeuroCure, Charité–Universitätsmedizin Berlin, Berlin, Germany
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Abstract
For many neurological diseases, the efficacy and outcome of treatment depend on early detection. Diagnosis is currently based on the detection of symptoms and neuroimaging abnormalities, which appear at relatively late stages in the pathogenesis. However, the underlying molecular responses to genetic and environmental insults begin much earlier and non-coding RNA networks are critically involved in these cellular regulatory mechanisms. Profiling RNA expression patterns could thus facilitate presymptomatic disease detection. Obtaining indirect readouts of pathological processes is particularly important for brain disorders because of the lack of direct access to tissue for molecular analyses. Living neurons and other CNS cells secrete microRNA and other small non-coding RNA into the extracellular space packaged in exosomes, microvesicles, or lipoprotein complexes. This discovery, together with the rapidly evolving massive sequencing technologies that allow detection of virtually all RNA species from small amounts of biological material, has allowed significant progress in the use of extracellular RNA as a biomarker for CNS malignancies, neurological, and psychiatric diseases. There is also recent evidence that the interactions between external stimuli and brain pathological processes may be reflected in peripheral tissues, facilitating their use as potential diagnostic markers. In this review, we explore the possibilities and challenges of using microRNA and other small RNAs as a signature for neurodegenerative and other neuropsychatric conditions.
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Affiliation(s)
- Pooja Rao
- Department of Psychiatry and Psychotherapy, University Medical Center Göttingen Göttingen, Germany
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Lopez-Atalaya JP, Ito S, Valor LM, Benito E, Barco A. Genomic targets, and histone acetylation and gene expression profiling of neural HDAC inhibition. Nucleic Acids Res 2013; 41:8072-84. [PMID: 23821663 PMCID: PMC3783173 DOI: 10.1093/nar/gkt590] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Histone deacetylase inhibitors (HDACis) have been shown to potentiate hippocampal-dependent memory and synaptic plasticity and to ameliorate cognitive deficits and degeneration in animal models for different neuropsychiatric conditions. However, the impact of these drugs on hippocampal histone acetylation and gene expression profiles at the genomic level, and the molecular mechanisms that underlie their specificity and beneficial effects in neural tissue, remains obscure. Here, we mapped four relevant histone marks (H3K4me3, AcH3K9,14, AcH4K12 and pan-AcH2B) in hippocampal chromatin and investigated at the whole-genome level the impact of HDAC inhibition on acetylation profiles and basal and activity-driven gene expression. HDAC inhibition caused a dramatic histone hyperacetylation that was largely restricted to active loci pre-marked with H3K4me3 and AcH3K9,14. In addition, the comparison of Chromatin immunoprecipitation sequencing and gene expression profiles indicated that Trichostatin A-induced histone hyperacetylation, like histone hypoacetylation induced by histone acetyltransferase deficiency, had a modest impact on hippocampal gene expression and did not affect the transient transcriptional response to novelty exposure. However, HDAC inhibition caused the rapid induction of a homeostatic gene program related to chromatin deacetylation. These results illuminate both the relationship between hippocampal gene expression and histone acetylation and the mechanism of action of these important neuropsychiatric drugs.
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Affiliation(s)
- Jose P Lopez-Atalaya
- Instituto de Neurociencias de Alicante (Universidad Miguel Hernández - Consejo Superior de Investigaciones Científicas), Campus de Sant Joan. Apt. 18. Sant Joan d'Alacant, 03550 Alicante, Spain
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Lavilla C, Alla A, Martínez de Ilarduya A, Benito E, García-Martín M, Galbis J, Muñoz-Guerra S. Biodegradable aromatic copolyesters made from bicyclic acetalized galactaric acid. ACTA ACUST UNITED AC 2012. [DOI: 10.1002/pola.26128] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Lavilla C, Alla A, de Ilarduya AM, Benito E, García-Martín MG, Galbis JA, Muñoz-Guerra S. Carbohydrate-based copolyesters made from bicyclic acetalized galactaric acid. ACTA ACUST UNITED AC 2012. [DOI: 10.1002/pola.25930] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Lavilla C, Alla A, Martínez de Ilarduya A, Benito E, García-Martín MG, Galbis JA, Muñoz-Guerra S. Carbohydrate-Based Polyesters Made from Bicyclic Acetalized Galactaric Acid. Biomacromolecules 2011; 12:2642-52. [DOI: 10.1021/bm200445w] [Citation(s) in RCA: 91] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- C. Lavilla
- Departament d’Enginyeria Química, Universitat Politècnica de Catalunya, ETSEIB, Diagonal 647, 08028 Barcelona, Spain
| | - A. Alla
- Departament d’Enginyeria Química, Universitat Politècnica de Catalunya, ETSEIB, Diagonal 647, 08028 Barcelona, Spain
| | - A. Martínez de Ilarduya
- Departament d’Enginyeria Química, Universitat Politècnica de Catalunya, ETSEIB, Diagonal 647, 08028 Barcelona, Spain
| | - E. Benito
- Departamento de Química Orgánica y Farmacéutica, Universidad de Sevilla, Profesor García González 2, 41012 Sevilla, Spain
| | - M. G. García-Martín
- Departamento de Química Orgánica y Farmacéutica, Universidad de Sevilla, Profesor García González 2, 41012 Sevilla, Spain
| | - J. A. Galbis
- Departamento de Química Orgánica y Farmacéutica, Universidad de Sevilla, Profesor García González 2, 41012 Sevilla, Spain
| | - S. Muñoz-Guerra
- Departament d’Enginyeria Química, Universitat Politècnica de Catalunya, ETSEIB, Diagonal 647, 08028 Barcelona, Spain
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Falo C, Varela MAR, Moreno A, Villalba E, Serra JM, Benito E, Fernandez A, Morilla I, Guma A, Escobedo AP. Abstract P1-01-26: Clinical Implications of pN0 mol+ in Breast Cancer Patients. Cancer Res 2010. [DOI: 10.1158/0008-5472.sabcs10-p1-01-26] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Introduction: Axillary lymph node involvement is the most significant prognostic factor in breast cancer patients. The real-time PCR (RT-PCR) appeared to be a sensitive method to diagnose the lymph node axillary stage, but the clinical relevance of pN0 (mol+) has not yet been established. We present the clinical characteristics of the subgroup of patients diagnosed as pN0 (mol+) and their clinical outcome after a mean follow-up of 72 months.
Material & Methods: Between June 2000 and November 2006, 674 patients with T1-T3 primary invasive breast cancer and low probability of axillary lymph node involvement, were included in a prospective study of the molecular analyses of the sentinel lymph node (SLN) biopsy. Each SLN was bi-dissected; one half was snap frozen for subsequent molecular analysis, on the other half, routine pathological analyses was performed, including immunoassaying for cam 5.2 antibody. The molecular analyses was performed by RT-PCR using the gene marker KRT 19. Adjuvant treatment and clinical outcome has been recorded after a mean follow-up of 72 months.
Results: 135 cases were staged as pN0 (mol+). Most of them corresponded to infiltrating ductal carcinoma (95%), 2.2% lobular, 1.5% colloid and 1.5% medullar. Nuclear grade: I in 5% of cases, II in 35% and III in 34% of them. By tumour stage, 1.5% were pT1a; 24% pT1b: 58% pT1c; 15% pT2 and 1.5% pT3. According to molecular subtypes, 73% of cases were luminal, 18.5% triple negative ones and 8.5% HER2 positive. All the patients except 5 ones received adjuvant systemic treatment: 41.5% hormonal therapy for at least 5 years; 32% chemotherapy followed by hormonotherapy and 18.5% chemotherapy, of those two patients received trastuzumab for 1 year. At the time of the analysis, there have been 4 local recurrences, 3 metastasic recurrences and 2 contra lateral ones. For survival analyses, 2 cases were excluded for presenting a previous breast cancer history, and one patient died after the last CMF from a septic shock. Of the 132 resting patients, 122 are free of relapse at the time of this analysis, the 3 patients with distant metastasis are on treatment for metastatic disease, 2 patients were death by other neoplastic diseases and 5 cases were death by other medical causes (4 cardiac and 1 respiratory failure). Survival rate for N0 mol+ was 94%, no specific breast cancer death have occurred at the present survival analyses.
Conclusions: Tumours diagnosed as pN0 (mol+) presented clinical and molecular characteristics of worse prognosis than pN0 (mol-) and this is translated in a higher proportion of patients staged N0 (mol+) treated with chemotherapy than pN0 (mol-). Survival in this subgroup of patients is high in relation to the adjuvant treatment delivered.
Citation Information: Cancer Res 2010;70(24 Suppl):Abstract nr P1-01-26.
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Affiliation(s)
- C Falo
- Institut Catala D'oncologia, L'Hospitalet, Barcelona, Spain; Hospital Universitari de Bellvitge, L'Hospitalet, Barcelona, Spain
| | - MAR Varela
- Institut Catala D'oncologia, L'Hospitalet, Barcelona, Spain; Hospital Universitari de Bellvitge, L'Hospitalet, Barcelona, Spain
| | - A Moreno
- Institut Catala D'oncologia, L'Hospitalet, Barcelona, Spain; Hospital Universitari de Bellvitge, L'Hospitalet, Barcelona, Spain
| | - E Villalba
- Institut Catala D'oncologia, L'Hospitalet, Barcelona, Spain; Hospital Universitari de Bellvitge, L'Hospitalet, Barcelona, Spain
| | - JM Serra
- Institut Catala D'oncologia, L'Hospitalet, Barcelona, Spain; Hospital Universitari de Bellvitge, L'Hospitalet, Barcelona, Spain
| | - E Benito
- Institut Catala D'oncologia, L'Hospitalet, Barcelona, Spain; Hospital Universitari de Bellvitge, L'Hospitalet, Barcelona, Spain
| | - A Fernandez
- Institut Catala D'oncologia, L'Hospitalet, Barcelona, Spain; Hospital Universitari de Bellvitge, L'Hospitalet, Barcelona, Spain
| | - I Morilla
- Institut Catala D'oncologia, L'Hospitalet, Barcelona, Spain; Hospital Universitari de Bellvitge, L'Hospitalet, Barcelona, Spain
| | - A Guma
- Institut Catala D'oncologia, L'Hospitalet, Barcelona, Spain; Hospital Universitari de Bellvitge, L'Hospitalet, Barcelona, Spain
| | - AP. Escobedo
- Institut Catala D'oncologia, L'Hospitalet, Barcelona, Spain; Hospital Universitari de Bellvitge, L'Hospitalet, Barcelona, Spain
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Benito E, Barco A. CREB's control of intrinsic and synaptic plasticity: implications for CREB-dependent memory models. Trends Neurosci 2010; 33:230-40. [DOI: 10.1016/j.tins.2010.02.001] [Citation(s) in RCA: 326] [Impact Index Per Article: 23.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2009] [Revised: 02/01/2010] [Accepted: 02/10/2010] [Indexed: 01/04/2023]
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Fernández CE, Bermúdez M, Alla A, Mancera M, García-Martín MG, Benito E, Roffé I, Galbis JA, Muñoz-Guerra S. Crystallization studies on linear aliphatic polyamides derived from naturally occurring carbohydrates. J Appl Polym Sci 2010. [DOI: 10.1002/app.31759] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Viosca J, Malleret G, Bourtchouladze R, Benito E, Vronskava S, Kandel ER, Barco A. Chronic enhancement of CREB activity in the hippocampus interferes with the retrieval of spatial information. Learn Mem 2009; 16:198-209. [PMID: 19237642 DOI: 10.1101/lm.1220309] [Citation(s) in RCA: 65] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The activation of cAMP-responsive element-binding protein (CREB)-dependent gene expression is thought to be critical for the formation of different types of long-term memory. To explore the consequences of chronic enhancement of CREB function on spatial memory in mammals, we examined spatial navigation in bitransgenic mice that express in a regulated and restricted manner a constitutively active form of CREB, VP16-CREB, in forebrain neurons. We found that chronic enhancement of CREB activity delayed the acquisition of an allocentric strategy to solve the hidden platform task. The ability to turn on and off transgene expression allowed us to dissect the role of CREB in dissociable memory processes. In mice in which transgene expression was turned on during memory acquisition, turning off the transgene re-established the access to the memory trace, whereas in mice in which transgene expression was turned off during acquisition, turning on the transgene impaired memory expression in a reversible manner, indicating that CREB enhancement specifically interfered with the retrieval of spatial information. The defects on spatial navigation in mice with chronic enhancement of CREB function were not corrected by conditions that increased further CREB-dependent activation of hippocampal memory systems, such as housing in an enriched environment. These results along with previous findings in CREB-deficient mutants indicate that the relationship of CREB-mediated plasticity to spatial memory is an inverted-U function, and that optimal learning in the water maze requires accurate regulation of this pathway.
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Affiliation(s)
- Jose Viosca
- Instituto de Neurociencias de Alicante, Universidad Miguel Hernández-Consejo Superior de Investigaciones Científicas, Alicante 03550, Spain
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