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Hu S, Li Y, Zhou J, Xu K, Pang Y, Weiskirchen R, Ocker M, Ouyang F. Identification of acetylshikonin as a novel tubulin polymerization inhibitor with antitumor activity in human hepatocellular carcinoma cells. J Gastrointest Oncol 2023; 14:2574-2586. [PMID: 38196542 PMCID: PMC10772698 DOI: 10.21037/jgo-23-842] [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] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Accepted: 12/08/2023] [Indexed: 01/11/2024] Open
Abstract
Background Microtubules are attractive targets for anticancer drugs. However, the microtubule-targeting agents (MTAs) currently in clinical use exhibit inevitable drug resistance. Therefore, there is an urgent need to discover novel MTAs for the clinical treatment of cancer. Methods Bioactive compounds extracted from Lithospermum erythrorhizon were assessed for in vitro anti-proliferative activities against a panel of human cancer cell lines using cell counting kit-8 (CCK-8) assay. Tubulin polymerization inhibition assay, colchicine competitive binding site assay, and immunofluorescence were used to validate the tubulin inhibition effect of acetylshikonin. Flow cytometry, Hoechst staining, and caspase-3 activity evaluation were performed to assess cell cycle arrest and cell apoptosis. 5,5',6,6'-tetrachloro-1,1',3,3'-tetramethylbenzimidazolylcarbocyanine iodide (JC-1) staining and dichloro-dihydro-fluorescein diacetate (DCFH-DA) staining were used to evaluate mitochondrial membrane potential (MMP) and reactive oxygen species (ROS), respectively. Results Acetylshikonin exhibited potent anti-proliferative activities against a panel of human cancer cell lines (IC50 values: 1.09-7.26 µM) and displayed comparable cytotoxicity against several drug-resistant cell lines. Further mechanism studies revealed that acetylshikonin induced cell cycle arrest of MHCC-97H cells at G2/M phase, and significantly promoted apoptosis marked by a collapse of MMP and abnormal ROS accumulation. Conclusions In this study, acetylshikonin was identified as MTA against hepatocellular carcinoma and can serve as a promising lead compound for further development of anti-cancer drug, underscoring its potential clinical significance.
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Affiliation(s)
- Siming Hu
- Department of Laboratory Medicine, Nanfang Hospital Taihe Branch, Guangzhou, China
| | - Yongchuan Li
- First Clinical Medical College, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Junqiu Zhou
- Department of Laboratory Medicine, Nanfang Hospital Baiyun Branch, Southern Medical University, Guangzhou, China
| | - Kun Xu
- Department of Laboratory Medicine, Nanfang Hospital Baiyun Branch, Southern Medical University, Guangzhou, China
| | - Yanqing Pang
- Second Clinical Medical College, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Ralf Weiskirchen
- Institute of Molecular Pathobiochemistry, Experimental Gene Therapy, and Clinical Chemistry (IFMPEGKC), RWTH University Hospital Aachen, Aachen, Germany
| | - Matthias Ocker
- Medical Department, Division of Hematology, Oncology, and Cancer Immunology Campus Charité Mitte, Charité University Medicine Berlin, Berlin, Germany
| | - Fen Ouyang
- Department of Laboratory Medicine, Nanfang Hospital Baiyun Branch, Southern Medical University, Guangzhou, China
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Ouyang F, Wu Q, Duan B, Yuan X, Wang B, Chen Y, Yin M, Zeng X. Diagnosis of spinal dural arteriovenous fistula: a multimodal MRI assessment strategy. Clin Radiol 2023; 78:e958-e965. [PMID: 37821323 DOI: 10.1016/j.crad.2023.08.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 07/11/2023] [Accepted: 08/31/2023] [Indexed: 10/13/2023]
Abstract
AIM To identify more specific screening indicators at magnetic resonance imaging (MRI) for the diagnosis of spinal dural arteriovenous fistulas (SDAVFs) and to determine an efficient diagnostic strategy. MATERIALS AND METHODS This retrospective study analysed clinical and imaging data of patients diagnosed with SDAVF and alternative myelopathy who underwent conventional MRI examinations. Additionally, three-dimensional (3D) T2-weighted sampling perfection with application-optimised contrasts using different flip-angle evolutions (3D-T2-SPACE) and contrast-enhanced magnetic resonance angiography (CE-MRA) data from patients with SDAVF were compared with digital subtraction angiography (DSA) data. RESULTS The age of onset, perimedullary flow voids (PFV), distribution of lesions, syringomyelia, degree of spinal oedema, and cauda equina disorder (CED) were factors that showed statistically significance in the identification of SDAVF with alternative myelopathy. After controlling for age, gender, PFV, degree of spinal cord swelling, and syringomyelia, the multivariable ordinal logistic regression model showed that the CED sign (OR = 32.46; 95% confidence interval [CI]: 2.47-427.15; p=0.008) was an independent predictor for SDAVF. The diagnostic model constructed using the PFV and CED signs had better diagnostic performance, with an area under the curve of 0.957 (p<0.001), maximum Youden index of 0.844, sensitivity of 92.9%, and specificity of 91.5%. Both 3D-T2-SPACE (77.8%) and CE-MRA (83.3%) sequences had good localisation values for SDAVF. Combining the two imaging examinations had better diagnostic accuracy than that of DSA. CONCLUSION CED and PFV on conventional MRI were specific indicators for the diagnosis of SDAVF. To compensate for the lack of fistula localisation on conventional MRI, 3D-T2-SPACE and CE-MRA can be used. Together they complement each other and have good diagnostic potential.
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Affiliation(s)
- F Ouyang
- Department of Radiology, The First Affiliated Hospital of Nanchang University, 330006 Nanchang, Jiangxi, China
| | - Q Wu
- Department of Radiology, The First Affiliated Hospital of Nanchang University, 330006 Nanchang, Jiangxi, China
| | - B Duan
- Class 211, Innovation Experiment, Nanchang University, 330031 Nanchang, Jiangxi, China
| | - X Yuan
- Department of Radiology, The First Affiliated Hospital of Nanchang University, 330006 Nanchang, Jiangxi, China
| | - B Wang
- Department of Radiology, The First Affiliated Hospital of Nanchang University, 330006 Nanchang, Jiangxi, China
| | - Y Chen
- Department of Radiology, The First Affiliated Hospital of Nanchang University, 330006 Nanchang, Jiangxi, China
| | - M Yin
- Department of Radiology, The First Affiliated Hospital of Nanchang University, 330006 Nanchang, Jiangxi, China
| | - X Zeng
- Department of Radiology, The First Affiliated Hospital of Nanchang University, 330006 Nanchang, Jiangxi, China.
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Ouyang F, Zhang H, Jiang Y, Wang H, Peng T, Xi C, Yu J, Li Z, Chen J, Wu L, Zhang B, Zhao W, Li B, Ouyang S, Shen C. Humoral immune response characteristics of the elderly, children and pregnant women after XBB infection. J Infect 2023; 87:e96-e99. [PMID: 37844670 DOI: 10.1016/j.jinf.2023.10.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Accepted: 10/12/2023] [Indexed: 10/18/2023]
Affiliation(s)
- Fen Ouyang
- Baiyun Branch, Nanfang Hospital, Southern Medical University, People's Republic of China; BSL-3 Laboratory (Guangdong), Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, People's Republic of China; Department of Laboratory Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, People's Republic of China
| | - Huan Zhang
- Guangdong Workstation for Emerging Infectious Disease Control and Prevention, Chinese Academy of Medical Sciences, Guangdong Provincial Center for Disease Control and Prevention, Guangzhou, Guangdong, China
| | - Yushan Jiang
- BSL-3 Laboratory (Guangdong), Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, People's Republic of China; Department of Laboratory Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, People's Republic of China; Department of Infectious Diseases, Key Laboratory of Biological Targeting Diagnosis, Therapy and Rehabilitation of Guangdong Higher Education Institutes, The Fifth Affiliated Hospital of Guangzhou Medical University, Guangzhou 510000, People's Republic of China
| | - Hesong Wang
- Baiyun Branch, Nanfang Hospital, Southern Medical University, People's Republic of China
| | - Tingting Peng
- Department of Infectious Diseases, Key Laboratory of Biological Targeting Diagnosis, Therapy and Rehabilitation of Guangdong Higher Education Institutes, The Fifth Affiliated Hospital of Guangzhou Medical University, Guangzhou 510000, People's Republic of China
| | - Chang Xi
- Department of Infectious Diseases, Key Laboratory of Biological Targeting Diagnosis, Therapy and Rehabilitation of Guangdong Higher Education Institutes, The Fifth Affiliated Hospital of Guangzhou Medical University, Guangzhou 510000, People's Republic of China
| | - Jianhai Yu
- BSL-3 Laboratory (Guangdong), Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, People's Republic of China; Department of Laboratory Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, People's Republic of China
| | - Zhuolin Li
- BSL-3 Laboratory (Guangdong), Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, People's Republic of China; Department of Laboratory Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, People's Republic of China
| | - Jiayin Chen
- BSL-3 Laboratory (Guangdong), Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, People's Republic of China; Department of Laboratory Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, People's Republic of China
| | - Linfan Wu
- BSL-3 Laboratory (Guangdong), Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, People's Republic of China; Department of Laboratory Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, People's Republic of China
| | - Bao Zhang
- BSL-3 Laboratory (Guangdong), Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, People's Republic of China; Department of Laboratory Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, People's Republic of China
| | - Wei Zhao
- BSL-3 Laboratory (Guangdong), Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, People's Republic of China; Department of Laboratory Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, People's Republic of China.
| | - Baisheng Li
- Guangdong Workstation for Emerging Infectious Disease Control and Prevention, Chinese Academy of Medical Sciences, Guangdong Provincial Center for Disease Control and Prevention, Guangzhou, Guangdong, China.
| | - Shi Ouyang
- Department of Infectious Diseases, Key Laboratory of Biological Targeting Diagnosis, Therapy and Rehabilitation of Guangdong Higher Education Institutes, The Fifth Affiliated Hospital of Guangzhou Medical University, Guangzhou 510000, People's Republic of China.
| | - Chenguang Shen
- BSL-3 Laboratory (Guangdong), Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, People's Republic of China; Department of Laboratory Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, People's Republic of China; Key Laboratory of Infectious Diseases Research in South China (Southern Medical University), Ministry of Education, People's Republic of China.
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Leclercq N, Marshall L, Weekers T, Basu P, Benda D, Bevk D, Bhattacharya R, Bogusch P, Bontšutšnaja A, Bortolotti L, Cabirol N, Calderón-Uraga E, Carvalho R, Castro S, Chatterjee S, De La Cruz Alquicira M, de Miranda JR, Dirilgen T, Dorchin A, Dorji K, Drepper B, Flaminio S, Gailis J, Galloni M, Gaspar H, Gikungu MW, Hatteland BA, Hinojosa-Diaz I, Hostinská L, Howlett BG, Hung KLJ, Hutchinson L, Jesus RO, Karklina N, Khan MS, Loureiro J, Men X, Molenberg JM, Mudri-Stojnić S, Nikolic P, Normandin E, Osterman J, Ouyang F, Oygarden AS, Ozolina-Pole L, Ozols N, Parra Saldivar A, Paxton RJ, Pitts-Singer T, Poveda K, Prendergast K, Quaranta M, Read SFJ, Reinhardt S, Rojas-Oropeza M, Ruiz C, Rundlöf M, Sade A, Sandberg C, Sgolastra F, Shah SF, Shebl MA, Soon V, Stanley DA, Straka J, Theodorou P, Tobajas E, Vaca-Uribe JL, Vera A, Villagra CA, Williams MK, Wolowski M, Wood TJ, Yan Z, Zhang Q, Vereecken NJ. Global taxonomic, functional, and phylogenetic diversity of bees in apple orchards. Sci Total Environ 2023; 901:165933. [PMID: 37536603 DOI: 10.1016/j.scitotenv.2023.165933] [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] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 07/27/2023] [Accepted: 07/29/2023] [Indexed: 08/05/2023]
Abstract
An essential prerequisite to safeguard pollinator species is characterisation of the multifaceted diversity of crop pollinators and identification of the drivers of pollinator community changes across biogeographical gradients. The extent to which intensive agriculture is associated with the homogenisation of biological communities at large spatial scales remains poorly understood. In this study, we investigated diversity drivers for 644 bee species/morphospecies in 177 commercial apple orchards across 33 countries and four global biogeographical biomes. Our findings reveal significant taxonomic dissimilarity among biogeographical zones. Interestingly, despite this dissimilarity, species from different zones share similar higher-level phylogenetic groups and similar ecological and behavioural traits (i.e. functional traits), likely due to habitat filtering caused by perennial monoculture systems managed intensively for crop production. Honey bee species dominated orchard communities, while other managed/manageable and wild species were collected in lower numbers. Moreover, the presence of herbaceous, uncultivated open areas and organic management practices were associated with increased wild bee diversity. Overall, our study sheds light on the importance of large-scale analyses contributing to the emerging fields of functional and phylogenetic diversity, which can be related to ecosystem function to promote biodiversity as a key asset in agroecosystems in the face of global change pressures.
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Affiliation(s)
- N Leclercq
- Agroecology Lab, Université Libre de Bruxelles (ULB), Boulevard du Triomphe CP 264/02, B-1050 Brussels, Belgium.
| | - L Marshall
- Agroecology Lab, Université Libre de Bruxelles (ULB), Boulevard du Triomphe CP 264/02, B-1050 Brussels, Belgium; Naturalis Biodiversity Center, Darwinweg 2, 2333 CR, Leiden, Netherlands
| | - T Weekers
- Agroecology Lab, Université Libre de Bruxelles (ULB), Boulevard du Triomphe CP 264/02, B-1050 Brussels, Belgium
| | - P Basu
- Centre for Pollination Studies, University of Calcutta, Kolkata, India
| | - D Benda
- Department of Zoology, Faculty of Science, Charles University, Prague, Czech Republic; Department of Entomology, National Museum, Prague, Czech Republic
| | - D Bevk
- Department of Organisms and Ecosystems Research, National Institute of Biology, Ljubljana, Slovenia
| | - R Bhattacharya
- Centre for Pollination Studies, University of Calcutta, Kolkata, India
| | - P Bogusch
- Department of Biology, Faculty of Science, University of Hradec Králové, Hradec Králové, Czech Republic
| | - A Bontšutšnaja
- Institute of Agricultural and Environmental Sciences, Estonian University of Life Sciences, Tartu, Estonia
| | - L Bortolotti
- CREA Research Centre for Agriculture and Environment, Bologna, Italy
| | - N Cabirol
- Department of Ecology and Natural Resources, Faculty of Science, UNAM, México City, Mexico
| | - E Calderón-Uraga
- Department of Ecology and Natural Resources, Faculty of Science, UNAM, México City, Mexico
| | - R Carvalho
- Centre for Functional Ecology, Associate Laboratory TERRA, Department of Life Sciences, University of Coimbra, Coimbra, Portugal
| | - S Castro
- Centre for Functional Ecology, Associate Laboratory TERRA, Department of Life Sciences, University of Coimbra, Coimbra, Portugal
| | - S Chatterjee
- Centre for Pollination Studies, University of Calcutta, Kolkata, India
| | - M De La Cruz Alquicira
- Department of Ecology and Natural Resources, Faculty of Science, UNAM, México City, Mexico
| | - J R de Miranda
- Department of Ecology, Swedish University of Agricultural Sciences, Uppsala, 750 05, Sweden
| | - T Dirilgen
- School of Agriculture and Food Science and Earth Institute, University College Dublin, Belfield, Dublin 4, Ireland
| | - A Dorchin
- Laboratory of Zoology, Université de Mons, Mons, Belgium; The Steinhardt Museum of Natural History, Tel Aviv University, 69978 Tel Aviv, Israel; Department of Entomology, Royal Museum for Central Africa, Tervuren, Belgium
| | - K Dorji
- College of Natural Resources, Royal University of Bhutan, Punakha, Bhutan
| | - B Drepper
- Division of Forest, Nature and Landscape, University of Leuven, Leuven, Belgium
| | - S Flaminio
- CREA Research Centre for Agriculture and Environment, Bologna, Italy; Laboratory of Zoology, Université de Mons, Mons, Belgium
| | - J Gailis
- Institute for Plant Protection Research Agrihorts, Latvia University of Life Sciences and Technologies, Jelgava, Latvia
| | - M Galloni
- Department of Biological, Geological, and Environmental Sciences, University of Bologna, Bologna, Italy
| | - H Gaspar
- Centre for Functional Ecology, Associate Laboratory TERRA, Department of Life Sciences, University of Coimbra, Coimbra, Portugal
| | - M W Gikungu
- Department of Zoology, National Museums of Kenya, Nairobi, Kenya
| | - B A Hatteland
- Division for Biotechnology and Plant Health, Norwegian Institute of Bioeconomy Research, Aas, Norway; Department of Biological Sciences, University of Bergen, Bergen, Norway
| | - I Hinojosa-Diaz
- Department of Zoology, Institute of Biology, UNAM, México City, Mexico
| | - L Hostinská
- Department of Biology, Faculty of Science, University of Hradec Králové, Hradec Králové, Czech Republic
| | - B G Howlett
- The New Zealand Institute for Plant & Food Research Limited, Lincoln, Canterbury, New Zealand
| | - K-L J Hung
- Department of Ecology and Evolutionary Biology, University of Toronto, Toronto, ON M5S 3B2, Canada; Oklahoma Biological Survey, University of Oklahoma, Norman, OK 73019, USA
| | - L Hutchinson
- School of Agriculture, Policy and Development, University of Reading, Reading, United Kingdom
| | - R O Jesus
- Graduate Program in Ecology, State University of Campinas, Campinas, São Paulo, Brazil
| | - N Karklina
- Institute for Plant Protection Research Agrihorts, Latvia University of Life Sciences and Technologies, Jelgava, Latvia
| | - M S Khan
- Department of Entomology, University of Agriculture, Peshawar, Pakistan
| | - J Loureiro
- Centre for Functional Ecology, Associate Laboratory TERRA, Department of Life Sciences, University of Coimbra, Coimbra, Portugal
| | - X Men
- Institute of Plant Protection, Shandong Academy of Agricultural Sciences/Shandong Provincial Key Laboratory of Plant Virology,Jinan 250100, China
| | - J-M Molenberg
- Agroecology Lab, Université Libre de Bruxelles (ULB), Boulevard du Triomphe CP 264/02, B-1050 Brussels, Belgium
| | - S Mudri-Stojnić
- Department of Biology and Ecology, Faculty of Sciences, University of Novi Sad, Trg Dositeja Obradovića 2, 21000 Novi Sad, Serbia
| | - P Nikolic
- Faculty of Agriculture, University of Banja Luka, Banja Luka, Bosnia and Herzegovina
| | - E Normandin
- Centre sur la biodiversité, Département des sciences biologiques, Université de Montréal, QC, Québec H1X 2B2, Canada
| | - J Osterman
- General Zoology, Institute for Biology, Martin Luther University Halle-Wittenberg, Hoher Weg 8, 06120 Halle (Saale), Germany; Nature Conservation and Landscape Ecology, University of Freiburg, Tennenbacherstrasse 4, 79106, Freiburg im Breisgau, Germany
| | - F Ouyang
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
| | - A S Oygarden
- Department of Natural Sciences and Environmental Health, University of South-Eastern Norway, Bø, Norway
| | - L Ozolina-Pole
- Institute for Plant Protection Research Agrihorts, Latvia University of Life Sciences and Technologies, Jelgava, Latvia
| | - N Ozols
- Institute for Plant Protection Research Agrihorts, Latvia University of Life Sciences and Technologies, Jelgava, Latvia
| | - A Parra Saldivar
- Instituto de Entomología, Universidad Metropolitana de Ciencias de la Educación (UMCE), Santiago, Chile
| | - R J Paxton
- General Zoology, Institute for Biology, Martin Luther University Halle-Wittenberg, Hoher Weg 8, 06120 Halle (Saale), Germany
| | - T Pitts-Singer
- USDA Agricultural Research Service, Pollinating Insects Research Unit, Logan, UT 84322, USA
| | - K Poveda
- Department of Entomology, Cornell University, 4126 Comstock Hall, Ithaca, NY 14853, USA
| | - K Prendergast
- Molecular and Life Sciences, Curtin University, Bentley, WA 6102, Australia
| | - M Quaranta
- CREA Research Centre for Agriculture and Environment, Bologna, Italy
| | - S F J Read
- The New Zealand Institute for Plant & Food Research Limited, Lincoln, Canterbury, New Zealand
| | - S Reinhardt
- Department of Natural Sciences and Environmental Health, University of South-Eastern Norway, Bø, Norway
| | - M Rojas-Oropeza
- Department of Ecology and Natural Resources, Faculty of Science, UNAM, México City, Mexico
| | - C Ruiz
- Departamento Biología Animal, Edafología y Geología, Facultad de Ciencias, Universidad de La Laguna, La Laguna, 38206, Tenerife, Spain
| | - M Rundlöf
- Department of Biology, Lund University, Lund, Sweden
| | - A Sade
- Department of Evolutionary and Environmental Biology, University of Haifa, Mt. Carmel, 31905 Haifa, Israel
| | - C Sandberg
- Department of Biology, Lund University, Lund, Sweden; Calluna AB, Husargatan 3, Malmö, 211 28, Sweden
| | - F Sgolastra
- Department of Agricultural and Food Sciences, University of Bologna, Bologna, Italy
| | - S F Shah
- Department of Entomology, University of Agriculture, Peshawar, Pakistan
| | - M A Shebl
- Department of Plant Protection, Faculty of Agriculture, Suez Canal University, Ismailia 41522, Egypt
| | - V Soon
- Natural History Museum and Botanical Garden, University of Tartu, Vanemuise 46, 51003 Tartu, Estonia
| | - D A Stanley
- School of Agriculture and Food Science and Earth Institute, University College Dublin, Belfield, Dublin 4, Ireland
| | - J Straka
- Department of Zoology, Faculty of Science, Charles University, Prague, Czech Republic
| | - P Theodorou
- General Zoology, Institute for Biology, Martin Luther University Halle-Wittenberg, Hoher Weg 8, 06120 Halle (Saale), Germany
| | - E Tobajas
- Department of Biology, Lund University, Lund, Sweden; Department of Animal Biology, University of Salamanca, Campus Miguel de Unamuno, Salamanca, 37007, Spain
| | - J L Vaca-Uribe
- Laboratorio de Investigaciones en Abejas LABUN, Departamento de Biología, Facultad de Ciencias, Universidad Nacional de Colombia, Bogotá,111321, Colombia
| | - A Vera
- Departamento de Biología, Universidad Metropolitana de Ciencias de la Educación (UMCE), Santiago, Chile
| | - C A Villagra
- Instituto de Entomología, Universidad Metropolitana de Ciencias de la Educación (UMCE), Santiago, Chile
| | - M-K Williams
- Department of Biology, Utah State University, Logan, UT 84322, USA
| | - M Wolowski
- Institute of Natural Sciences, Federal University of Alfenas, Alfenas, Minas Gerais, Brazil
| | - T J Wood
- Laboratory of Zoology, Université de Mons, Mons, Belgium
| | - Z Yan
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
| | - Q Zhang
- Beijing Biodiversity Conservation Research Center/Beijing Milu Ecological Research Center, Beijing 100076, China
| | - N J Vereecken
- Agroecology Lab, Université Libre de Bruxelles (ULB), Boulevard du Triomphe CP 264/02, B-1050 Brussels, Belgium
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Lemes C, Rottner L, Heeger CH, Maurer T, Reissmann B, Ouyang F, Mathew S, Metzner A, Schlueter M, Kuck KH. Acute and long-term success of left atrial anterior line and mitral isthmus line ablation in patients after mitral valve surgery. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.641] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Perimitral flutter and atrial fibrillation may occur in patients with prior surgical mitral valve (MV) repair or replacement and can be challenging for percutaneous catheter ablation.
Objective
This study sought to determine the feasibility, acute success and durability of catheter ablation of atrial fibrillation or atrial tachycardia by way of a mitral isthmus line (MIL) or an anterior line (AL).
Methods
A total of 81 patients (49 males, mean age 62±11 years) with prior MV replacement (n=30) or repair (n=51) underwent creation of a MIL (n=34) and/or an AL (n=72). Control group patients without prior surgery were matched 1:1 with the valve group (MIL, n=34; AL, n=72).
Results
Acute bidirectional block of the MIL was successfully achieved in 24/34 cases and of the AL in 64/72 patients with prior MV surgery. In the control group, acute bidirectional block was achieved in 31/34 MIL patients and 65/72 AL patients. In terms of durability, the MIL valve subgroup showed the poorest results (probability of long-term failure 2.224, as opposed to 0.605 in the MIL control subgroup; hazard ratio [HR]=0.27, 95% confidence interval [CI], 0.11–0.65; p=0.004). In the AL subgroups, long-term outcomes were similar (probability of failure in AL valve subgroup 0.844 vs. AL control subgroup 1.03; HR=1.22, 95% CI, 0.66–2.26; p=0.523).
Conclusions
Percutaneous creation of MIL and AL is feasible and safe in patients with prior MV replacement/repair. Because of poor long-term outcomes, MIL creation appears not advisable in patient with prior MV surgery.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- C Lemes
- University Heart Center , Luebeck , Germany
| | - L Rottner
- The University Medical Center Hamburg-Eppendorf , Hamburg , Germany
| | - C H Heeger
- University Heart Center , Luebeck , Germany
| | - T Maurer
- Asklepios Clinic St. Georg , Hamburg , Germany
| | - B Reissmann
- The University Medical Center Hamburg-Eppendorf , Hamburg , Germany
| | - F Ouyang
- The University Medical Center Hamburg-Eppendorf , Hamburg , Germany
| | - S Mathew
- University Hospital Giessen and Marburg, Cardiology , Giessen , Germany
| | - A Metzner
- The University Medical Center Hamburg-Eppendorf , Hamburg , Germany
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6
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Obergassel J, Taraba S, Nies M, Atzor C, Lemoine MD, Rottner L, Schleberger R, Dinshaw LWH, Meyer C, Willems S, Reissmann B, Ouyang F, Metzner A, Kirchhof P, Rillig A. Why are redo AF ablations required and what does it take? Type of index PVI predicts pattern of redo ablations. Europace 2022. [DOI: 10.1093/europace/euac053.228] [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: 11/14/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: None.
Background
Catheter ablation targeting isolation of the pulmonary veins (PVI) is the most effective treatment for atrial fibrillation (AF). Despite its high overall effectiveness, repeat AF ablations (re-do procedures, RDP) are often required to maintain sinus rhythm.
Purpose
Determine predictors for multiple and/or complex RDP, evaluate reference values for procedure duration and radiation exposure during index PVI (iPVI) and nth RDP in a large cohort.
Methods and Results
Data mining identified 934 (mean age 62.6 ± 12.3 years, 346 females) out of 6848 total AF ablation patients from a large German AF ablation center between 09/2008 and 09/2021 with an index PVI and at least one RDP. Analysis included 2152 procedures (out of 8750 total AF-related ablations). At iPVI, AF pattern was classified as paroxysmal AF (PAF) in 387 patients (41%). All others (59%) were classified as non-paroxysmal AF (Non-PAF). Non-PAF was significantly more frequent in males (64% vs. 49%, p<0.01). Median period between first PVI and RDP was 558 days (25th/75th percentiles 244.0/1175.5 days). Non-PAF patients had a significantly higher probability of multiple RDP compared to patients with PAF at iPVI (p<0.01, Figure 1A). 18% (8%) of patients with non-PAF had 2 (3) or more RDP while only 13% (3%) of pat. with PAF had 2 (3) or more RDP.
iPVI was classified as PVI-only or PVI with additional substrate modification (SM). 724/934 patients (78%) received PVI-only as initial procedure. Of these, 572 (79%) had only 1 RDP, 116 (16%) had 2 RDP and 36 (5%) had 3 or more RDP. This distribution was 77%, 15% and 8% for 1, 2 and 3 or more RDP for patients with complex PVI as iPVI.
An algorithm based on regular expressions classified all RDP as repeat PVI (Re-PVI) due to reconduction (PV reconduction), ablation of atrial tachycardia (AT) or SM, e. g. defragmentation of fractionated signals, or combinations. The results were manually quality-controlled. 798/934 (85%) patients required PV re-isolation due to PV reconduction, 298/934 (32%) required ablation for atrial tachycardia (AT) at least once during FU (Figure 1B). Comparing PVI-only iPVI patients with patients who received substrate modification during iPVI, significantly less patients with PVI-only iPVI had RDP for AT compared to those with SM during iPVI (27% vs. 50%, p<0.01). More PVI-only iPVI patients required PV-reisolation at any time during FU (87% vs 79%, p<0.01). Considering PVI-only (+/- CTI) iPVIs only, dose-area product decreased in RDP compared to first PVI, while procedure duration slightly increased (Figure 1C). Data on periprocedural complications will be reported.
Conclusion
Redo AF ablations procedures are mainly required due to reconnected pulmonary veins or AT. Patients with PAF at iPVI are less likely to require more than one RDP which provides indirect support for early rhythm control in treatment of AF. SM at iPVI might be a predictor for occurrence of AT in the further course.
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Affiliation(s)
- J Obergassel
- University Heart & Vascular Center Hamburg, Hamburg, Germany
| | - S Taraba
- University Heart & Vascular Center Hamburg, Hamburg, Germany
| | - M Nies
- University Heart & Vascular Center Hamburg, Hamburg, Germany
| | - C Atzor
- University Heart & Vascular Center Hamburg, Hamburg, Germany
| | - MD Lemoine
- University Heart & Vascular Center Hamburg, Hamburg, Germany
| | - L Rottner
- University Heart & Vascular Center Hamburg, Hamburg, Germany
| | - R Schleberger
- University Heart & Vascular Center Hamburg, Hamburg, Germany
| | - LWH Dinshaw
- University Heart & Vascular Center Hamburg, Hamburg, Germany
| | - C Meyer
- Evangelical Hospital, Cardiology, Duesseldorf, Germany
| | - S Willems
- Asklepios Clinic St. Georg, Hamburg, Germany
| | - B Reissmann
- University Heart & Vascular Center Hamburg, Hamburg, Germany
| | - F Ouyang
- University Heart & Vascular Center Hamburg, Hamburg, Germany
| | - A Metzner
- University Heart & Vascular Center Hamburg, Hamburg, Germany
| | - P Kirchhof
- University Heart & Vascular Center Hamburg, Hamburg, Germany
| | - A Rillig
- University Heart & Vascular Center Hamburg, Hamburg, Germany
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7
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Lemoine M, My I, Mencke C, Butt M, Schleberger R, Muenkler P, Rottner L, Moser F, Moser J, Dinshaw L, Reissmann B, Ouyang F, Kirchhof P, Rillig A, Metzner A. Comparison of left atrial lesion size and troponin release of two novel single shot devices for pulmonary vein isolation: pulsed field ablation vs. multi-electrode radiofrequency balloon. Europace 2022. [DOI: 10.1093/europace/euac053.253] [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: 11/13/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: None.
Introduction
Pulsed-field ablation (PFA) and the multi-electrode radiofrequency balloon (RFB) are two novel ablation technologies to perform pulmonary vein isolation (PVI). It is currently unknown whether these technologies differ in lesion formation and lesion extent.
Purpose
We compared the acute lesion extent after PVI induced by PFA and RFB by measuring low-voltage area in high-density maps and the release of biomolecules reflecting cardiac injury.
Methods
PVI was performed with a pentaspline catheter (FARAPULSE) applying PFA or with the compliant multi-electrode radiofrequency balloon (HELIOSTAR). Before and after PVI high-density mapping with CARTO3 was performed. In addition, blood samples were taken before transseptal puncture and after post-PVI remapping. Serum concentrations of high-sensitive Troponin I (hsTropI) were quantified by Immunoassay.
Results
50 patients undergoing PVI by PFA (n=26, age 71±10 y, 58% males, 58% persistent AF) or RFB (n=24; age 64±13 y, 54% males, 25% persistent AF) were evaluated. Acute PVI was achieved in all patients in both groups. Mean number of PFA pulses were n=34±5 and mean number RFB applications were n=8±3. Total posterior ablation area was bigger in PFA (19.0±6.2 cm²) than in RFB (9.0±2.2 cm²; p<0.001). The posterior distance between septal and lateral lesions was shorter in PFA (23.7±10.5 mm) than in RFB (30.0±7.3 mm; p=0.021). In a total of 38 patients increase of hsTropI was higher after PFA (625±138 pg/ml, n=28) vs. RFB (148±36 pg/ml; n=10; p=0.049) supporting the evidence of larger lesion extent by PFA.
Conclusion
Pulse-field ablation delivers larger acute lesion areas and higher troponin release upon successful pulmonary vein isolation than multi-electrode array balloon-based pulmonary vein isolation in this single-center series.
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Affiliation(s)
- M Lemoine
- University Heart Center Hamburg, Department of Cardiology and Electrophysiology, Hamburg, Germany
| | - I My
- University Heart Center Hamburg, Department of Cardiology and Electrophysiology, Hamburg, Germany
| | - C Mencke
- University Heart Center Hamburg, Department of Cardiology and Electrophysiology, Hamburg, Germany
| | - M Butt
- University Heart Center Hamburg, Department of Cardiology and Electrophysiology, Hamburg, Germany
| | - R Schleberger
- University Heart Center Hamburg, Department of Cardiology and Electrophysiology, Hamburg, Germany
| | - P Muenkler
- University Heart Center Hamburg, Department of Cardiology and Electrophysiology, Hamburg, Germany
| | - L Rottner
- University Heart Center Hamburg, Department of Cardiology and Electrophysiology, Hamburg, Germany
| | - F Moser
- University Heart Center Hamburg, Department of Cardiology and Electrophysiology, Hamburg, Germany
| | - J Moser
- University Heart Center Hamburg, Department of Cardiology and Electrophysiology, Hamburg, Germany
| | - L Dinshaw
- University Heart Center Hamburg, Department of Cardiology and Electrophysiology, Hamburg, Germany
| | - B Reissmann
- University Heart Center Hamburg, Department of Cardiology and Electrophysiology, Hamburg, Germany
| | - F Ouyang
- University Heart Center Hamburg, Department of Cardiology and Electrophysiology, Hamburg, Germany
| | - P Kirchhof
- University Heart Center Hamburg, Department of Cardiology and Electrophysiology, Hamburg, Germany
| | - A Rillig
- University Heart Center Hamburg, Department of Cardiology and Electrophysiology, Hamburg, Germany
| | - A Metzner
- University Heart Center Hamburg, Department of Cardiology and Electrophysiology, Hamburg, Germany
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8
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Winkelmann SJ, Lemoine MD, Wuerger T, Schleberger R, Rottner L, Dinshaw L, Moser JM, Muenkler P, Nikorowitsch J, Reissmann B, Ouyang F, Toennis T, Kirchhof P, Metzner A, Rillig A. Safety of pulsed-field ablation in patients with cardiac implantable electronic devices. A single-center pilot study. Europace 2022. [DOI: 10.1093/europace/euac053.234] [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: 11/13/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: None.
Introduction
Pulsed-field ablation (PFA) is a novel energy source to perform pulmonary vein isolation (PVI) in patients with atrial fibrillation or cavo-tricuspid isthmus ablation (CTI) in patients with atrial flutter. Whether strong electrical fields generated by PFA could change the function and integrity of cardiac implantable electronic devices (CIED) is not known.
Aim
To assess the function and integrity of implanted devices before and after pulsed-field ablation.
Methods
This study included consecutive patients with CIED undergoing PFA at a large single center. Real-time CIED electrograms were recorded during PFA applications. CIED were interrogated before and after PFA assessing function (threshold, sensing), integrity (impedance), and arrhythmia episodes.
Results
We performed PFA in six patients (age 69±12 years, 1/6 female, left atrial diameter was 44±3 mm, left-ventricular ejection fraction 40±14%) for PVI in five patients with atrial fibrillation and CTI ablation in one patient with atrial flutter. All patients had CIEDs (one cardiac resynchronization device, two implantable cardioverter-defibrillators, three two-chamber pacemakers). Each patient undergoing PVI received 32 PFA applications of 2.5 s. (4x basket configuration and 4x flower configuration at each pulmonary vein), amounting to a total ablation time of 80 s and resulting in complete PVI in all five patients. For CTI ablation we applied 8 PFA applications of 2.5 s (20 s total ablation time) resulting in CTI blockade. Real-time intracardiac electrograms (iEGM) during PFA applications revealed sensing of single PFA application impulses in three patients and blanking of the iEGM in three patients. Postinterventional device testing revealed no changes in impedance, stimulation threshold or sensing. No leads were dislocated or damaged. No other device malfunctions occurred during the procedure, as well as no other major periprocedural complications occurred.
Conclusion
The function and integrity of pacemakers and defibrillators is not affected by PFA in our patient sample. Larger series are needed to confirm the apparent safety of PFA in patients with CIED.
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Affiliation(s)
- SJ Winkelmann
- University Heart & Vascular Center Hamburg, Hamburg, Germany
| | - MD Lemoine
- University Heart & Vascular Center Hamburg, Hamburg, Germany
| | - T Wuerger
- University Heart & Vascular Center Hamburg, Hamburg, Germany
| | - R Schleberger
- University Heart & Vascular Center Hamburg, Hamburg, Germany
| | - L Rottner
- University Heart & Vascular Center Hamburg, Hamburg, Germany
| | - L Dinshaw
- University Heart & Vascular Center Hamburg, Hamburg, Germany
| | - JM Moser
- University Heart & Vascular Center Hamburg, Hamburg, Germany
| | - P Muenkler
- University Heart & Vascular Center Hamburg, Hamburg, Germany
| | - J Nikorowitsch
- University Heart & Vascular Center Hamburg, Hamburg, Germany
| | - B Reissmann
- University Heart & Vascular Center Hamburg, Hamburg, Germany
| | - F Ouyang
- University Heart & Vascular Center Hamburg, Hamburg, Germany
| | - T Toennis
- University Heart & Vascular Center Hamburg, Hamburg, Germany
| | - P Kirchhof
- University Heart & Vascular Center Hamburg, Hamburg, Germany
| | - A Metzner
- University Heart & Vascular Center Hamburg, Hamburg, Germany
| | - A Rillig
- University Heart & Vascular Center Hamburg, Hamburg, Germany
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9
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Lemoine M, Mencke C, Schleberger R, Muenkler P, Wieboldt H, Scherschel C, Dinshaw L, Reissmann B, Ouyang F, Fabritz L, Zeller T, Meyer C, Rillig A, Metzner A, Kirchhof P. Pulmonary vein isolation by pulsed-field ablation induces smaller neurocardiac damage than cryoballoon ablation. Europace 2022. [DOI: 10.1093/europace/euac053.251] [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: 11/14/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: Private company. Main funding source(s): FARAPULSE, Inc.
Introduction
Thermal energy sources damage the entire atrial tissue during pulmonary vein isolation (PVI) including cardiac nerves and ganglia. This induces a postinterventional increase in heart rate. Pulsed-field ablation (PFA), a new non-thermal energy source for PVI, primarily damages cardiomyocytes by electroporation. Whether use of PFA reduces damage to cardiac nerves and ganglia and influences postinterventional increase of heart rate is not known.
Purpose
We compared the acute effects of PFA with a pentaspline catheter and cryoballoon ablation (CBA) on secretion of circulating biomolecules reflecting cardiomyocyte and neuronal injury and postinterventional increase in heart rate to estimate damage to the cardiac autonomic nervous system and autonomic dysfunction after PVI.
Methods
Blood samples were taken before and after PVI in consecutive patients undergoing PFA and CBA. All patients participated in the TRUST registry. Serum concentrations of high-sensitive Troponin I (hsTropI, Immunoassay) and S100b (ELISA), a surrogate marker for neuronal injury, were quantified in blood samples taken prior to PVI and directly after PVI. Pre- and postinterventional heart rates were measured in ECGs and Holter-ECGs.
Results
Fifty-six patients underwent PVI, either by PFA (n=28, age 63 [54; 75] y, 64% males, 57% persistent AF) or CBA (n=28, age 71 [62; 78] y, 61% males, 54% persistent AF). All 112 blood samples were analyzable. Acute success of PVI was 100% in both groups without major complications, especially, no TIA and no stroke. After CBA, one patient suffered from phrenic palsy, which reversed after 3 months. HsTropI increased 3.3-fold more after PFA compared to CBA (625±138 vs. 185±42 pg/ml; p=0.004) suggesting more damage to cardiomyocytyes. S100b increased 2.9-fold less after PFA compared to CBA (21.1±3.7 vs. 61.2±8.1 pg/ml; p<0.001). The ratio of ∆S100b/∆hsTropI was five-fold smaller after PFA compared to CBA (0.19±0.1 vs. 0.98±0.3; p=0.007), suggesting a lower neurocardiac injury in comparison to lesion size. Concomitantly, increase in heart rate at the postinterventional day was smaller in PFA (-0.2±3.0 bpm; n=45) than in CBA (+6.1±2.7 bpm, n=15; p=0.024).
Conclusion
This study in patients validates the experimental concept that PFA-based AF ablation leads to more specific damage to cardiomyocytes than to cardiac nerves and ganglia, reflected by lower S100B concentrations and no post-interventional heart rate increase compared to CBA.
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Affiliation(s)
- M Lemoine
- University Heart & Vascular Center Hamburg, Cardiology, Hamburg, Germany
| | - C Mencke
- University Heart & Vascular Center Hamburg, Cardiology, Hamburg, Germany
| | - R Schleberger
- University Heart & Vascular Center Hamburg, Cardiology, Hamburg, Germany
| | - P Muenkler
- University Heart & Vascular Center Hamburg, Cardiology, Hamburg, Germany
| | - H Wieboldt
- University Heart & Vascular Center Hamburg, Cardiology, Hamburg, Germany
| | - C Scherschel
- Evangelical Hospital, Cardiology, Duesseldorf, Germany
| | - L Dinshaw
- University Heart & Vascular Center Hamburg, Cardiology, Hamburg, Germany
| | - B Reissmann
- University Heart & Vascular Center Hamburg, Cardiology, Hamburg, Germany
| | - F Ouyang
- University Heart & Vascular Center Hamburg, Cardiology, Hamburg, Germany
| | - L Fabritz
- University Heart & Vascular Center Hamburg, Cardiology, Hamburg, Germany
| | - T Zeller
- University Heart & Vascular Center Hamburg, Cardiology, Hamburg, Germany
| | - C Meyer
- Evangelical Hospital, Cardiology, Duesseldorf, Germany
| | - A Rillig
- University Heart & Vascular Center Hamburg, Cardiology, Hamburg, Germany
| | - A Metzner
- University Heart & Vascular Center Hamburg, Cardiology, Hamburg, Germany
| | - P Kirchhof
- University Heart & Vascular Center Hamburg, Cardiology, Hamburg, Germany
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10
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Rottner L, Schleberger R, Lemoine M, My I, Moser F, Moser J, Dinshaw L, Kirchhof P, Ouyang F, Rillig A, Metzner A, Reissmann B. Catheter ablation of the mitral isthmus line using the novel DiamondTemp ablation system: first experience using two different ablation protocols. Europace 2022. [DOI: 10.1093/europace/euac053.070] [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: 11/13/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: None.
Background
Mitral ishmus ablation is an established approach to treat perimitral reentrant tachycardia, and is often performed as substrat modification in patients with persistent atrial fibrillation (AF). Bidirectional block of the mitral isthmus line (MIL) is still a great challenge using conventional ablation catheters, but is essential to prevent recurrence of atrial arrhythmia.
Recently, the novel DiamondTempTM (DT) ablation system was introduced and allows for high-power, short-duration ablation in a temperature-controlled mode. Its use during pulmonary vein isolation (PVI) using a recommended ablation setting with a catheter-tip temperature limit of 60°C, a temperature-controlled power of 50 W and an application duration of 10 sec has shown to be effective and safe. However, data on DT ablation settings for substrate modification, i.e., creation of linear lesions are lacking.
Aim
The aim of the present study was to evaluate acute efficacy and safety of the novel DT ablation system for bidirectional block of the MIL using two different protocols.
Methods
The study population comprised 14 patients [67±8 years, 10/14 male (71%)] suffering from persistent AF and/or atrial tachycardia who underwent catheter re-ablation with creation of a MIL using the DT ablation system. Ablation settings were a catheter-tip temperature limit of 60°C, a temperature-controlled power of 50 W with an application duration of either 10 sec (group A, n=7) or 20 sec (group B, n=7). Additional epicardial ablation from within the coronary sinus with a temperature limit of 60°C, a temperature-controlled power of 20 W and an application duration of 20 sec was performed, if bidirectional block could not be achieved with endocardial ablation only.
Results
Mean procedure and fluoroscopy time, and dose area product for group A and group B were 103±24 vs. 119±38 min, 12±5 vs. 13±4 min, and 572±270 vs. 537±202 cGycm, respectively. Bidirectional block of the MIL was achieved in 7/7 (100%) patients in group A and in 6/7 (86%) patients in group B. Additional epicardial ablation was required in 6/7 patients (86%) in group A and in 4/7 (57%) patients in group B. In group B, bidirectional block of the MIL required fewer endocardial (31±11 vs. 26±10 applications) as well as epicardial RF-applications (10±6 vs. 7±3 applications). Pericardial effusion without hemodynamic relevance occurred in 1/7 (14%) patients of group B. No further complications occurred.
Conclusion
Catheter ablation of the MIL using the novel DT ablation system is safe and associated with high acute efficacy. A lower number of RF-applications and a less frequent need for additional epicardial ablation was observed when applying longer RF-applications of 20 sec. Further analyses are warranted to confirm these findings.
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Affiliation(s)
- L Rottner
- University Heart & Vascular Center Hamburg, Hamburg, Germany
| | - R Schleberger
- University Heart & Vascular Center Hamburg, Hamburg, Germany
| | - M Lemoine
- University Heart & Vascular Center Hamburg, Hamburg, Germany
| | - I My
- University Heart & Vascular Center Hamburg, Hamburg, Germany
| | - F Moser
- University Heart & Vascular Center Hamburg, Hamburg, Germany
| | - J Moser
- University Heart & Vascular Center Hamburg, Hamburg, Germany
| | - L Dinshaw
- University Heart & Vascular Center Hamburg, Hamburg, Germany
| | - P Kirchhof
- University Heart & Vascular Center Hamburg, Hamburg, Germany
| | - F Ouyang
- University Heart & Vascular Center Hamburg, Hamburg, Germany
| | - A Rillig
- University Heart & Vascular Center Hamburg, Hamburg, Germany
| | - A Metzner
- University Heart & Vascular Center Hamburg, Hamburg, Germany
| | - B Reissmann
- University Heart & Vascular Center Hamburg, Hamburg, Germany
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11
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Rottner L, Moser F, Schleberger R, Moser J, My I, Lemoine M, Dinshaw L, Kirchhof P, Ouyang F, Reissmann B, Metzner A, Rillig A. Optimizing catheter ablation of atrial fibrillation by a novel wide-band dielectric imaging system: first experience on real-time wall thickness measurement. Europace 2022. [DOI: 10.1093/europace/euac053.059] [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: 11/12/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: None.
Background
Conventional mapping systems do not provide wall-thickness data, which is, however, known to be a determinant of radiofrequency ablation lesion transmurality. KODEX-EPD is a novel open-platform system, which uses dielectric tissue properties to provide real-time, high-resolution cardiac images, tissue characteristics and wall-thickness measurement to guide ablation procedures.
Aim
The aim of this case series was to report on our first experiences with KODEX-EPD regarding estimation of myocardial wall-thickness during catheter ablation of atrial fibrillation (AF).
Methods
We retrospectively analyzed consecutive patients undergoing radiofrequency AF-ablation in combination with KODEX-EPD. A high-resolution image from the left atrium (LA) and the pulmonary veins (PV) was obtained prior to ablation using a spiral mapping catheter in conjunction with KODEX-EPD. Wall-viewer points were collected within the LA, the PVs and the left atrial appendage (LAA) using a standard radiofrequency non-contact force ablation catheter and analyzed for wall-thickness applying the latest KODEX-EPD software version (1.5.0, not yet commercially released). Wall-viewer points were divided into a total of 10 segments (PV ostia, anterior wall, posterior wall, LA roof, LA floor, LAA and PV carina, details see Figure 1) in order to characterize wall-thickness in respective areas.
Results
A total of 570 wall-viewer points in 5 patients were analyzed. Most of the wall-viewer points were collected at the PV ostia as well as along the posterior and anterior wall (449/570, 79%). Actual myocardial atrial thickness ranged from 1.6 to 3.9 mm. Thickest myocardial LA-tissue was measured at the anterior wall (median 3.1 mm) and thinnest at the LA-roof (median 2.2 mm). Figure 2 gives a detailed distribution of wall-thickness measurements at different sites in the LA and PVs.
Conclusion
Atrial wall thickness can be estimated in patients during AF ablation procedures using dielectric tissue properties. Further evaluation and validation of the method are needed to study its reliability and utility for clinical practice.
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Affiliation(s)
- L Rottner
- The University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - F Moser
- The University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - R Schleberger
- The University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - J Moser
- The University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - I My
- The University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - M Lemoine
- The University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - L Dinshaw
- The University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - P Kirchhof
- The University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - F Ouyang
- The University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - B Reissmann
- The University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - A Metzner
- The University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - A Rillig
- The University Medical Center Hamburg-Eppendorf, Hamburg, Germany
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12
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Han L, Wang Y, Huang X, Wang J, Zhang Q, Yan J, Ouyang F, Cai Z, Huang X, Zhuang J. A Method for Production of Human Adenosine Deaminase 1 (ADA1) in Pichia pastoris Provides Needed Quality Control Material for Clinical Laboratories. Ann Clin Lab Sci 2022; 52:154-160. [PMID: 35181629] [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] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
OBJECTIVE Adenosine deaminase (ADA) plays a major role in maintaining metabolic homeostasis via catalysis of hydrolytic deamination of adenosine to inosine. The ADA1 isoenzyme of ADA is an analyte tested in clinical laboratories; however, lack of quality control (QC) material in terms of enzyme homogeneity, stability, and coverage of the clinically relevant analytical measurement range (AMR), poses a challenge for adequate monitoring of this analyte. The aim of this study was to address the need for manufacture of QC material through recombinant expression of catalytically active ADA1 in eukaryotic cells (Pichia pastoris GS115). METHODS The coding region of ADA1 gene was amplified by PCR and ligated into plasmid pPICZαA, followed by transfer into P. pastoris using electroporation. Recombinant ADA1 produced by P. pastoris was purified using a Ni-NTA resin column, yielding 5 mL of purified ADA1 with an activity of 4200.6 U/L. Purified ADA1 protein was added to human donor serum as the appropriate matrix for QC materials preparation. RESULTS One hundred vials of lyophilized ADA1 were prepared at clinically significant concentrations at 41.6 U/L and 115.5 U/L (50 vials each). Both concentrations were homogenous and stable at room temperature (RT, 22-24°C) for at least 7 d, at 4°C for 3 months, and at -20°C for 12 months. Reconstituted aliquots of QC material were found to be stable at -20°C for up to 60 d and should be used within 8 h or 48 h when stored at RT or 4°C, respectively. CONCLUSION Success of this ADA1 expression system presents a potential solution to increase production options available to clinical laboratories.
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Affiliation(s)
- Liqiao Han
- Department of Laboratory Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Yunxiu Wang
- Department of Laboratory Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Xiaoting Huang
- Department of Laboratory Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Jianbing Wang
- Department of Laboratory Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Qiaoxuan Zhang
- Department of Laboratory Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Jun Yan
- Department of Laboratory Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Fen Ouyang
- Department of Laboratory Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Zhiliang Cai
- Department of Laboratory Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Xianzhang Huang
- Department of Laboratory Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Junhua Zhuang
- Department of Laboratory Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
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13
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Rottner L, Moser F, Schleberger R, Weimann J, Moser J, Lemoine M, Muenkler P, Dinshaw L, Risius T, Kirchhof P, Ouyang F, Reissmann B, Metzner A, Rillig A. Accuracy and acute efficacy of a novel occlusion tool to guide cryoballoon-based pulmonary vein isolation. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.0354] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Abstract
Background
Cryoballoon (CB)-based pulmonary vein isolation (PVI) currently requires to verify occlusion of each pulmonary vein (PV) using fluoroscopy and dye injection.
Objective
The current study evaluated whether the novel CB-occlusion tool integrated into the wide-band dielectric imaging system KODEX-EPD reliably verifies occlusion of PV according to a novel dye-injection based algorithm.
Methods
Consecutive patients suffering from symptomatic atrial fibrillation (AF) underwent CB-based PVI using the KODEX-EPD and the novel occlusion-tool (group I). To confirm accurate display of the PVs, selective PV-angiography was performed in the first half of the patients of group I (group Ia) in addition to a three-dimensional left atrial (LA) map using a spiral mapping catheter (Achieve, SMC1, Medtronic, MN, USA). PV-angiographies were waived for the following patients (group Ib). Procedural duration and radiation exposure were compared to a control group of patients undergoing conventional CB-based PVI.
Results
CB-based PVI was successful in 50/50 patients of group I (mean age 63±11 years, 18 paroxysmal (36%)) and 25/25 patients of group II (66±10 years, 9 paroxysmal (60%)). Concordance of PV-occlusion as assessed by either PV-occlusion-angiography or KODEX-EPD, was documented in 237/272 (87%) occlusion-analyses among 198 PVs (95% for left superior PV, 93% for left inferior PV, 86% for right inferior PV and 77% for right superior PV).
In the final evaluation phase (group Ib) LA fluoroscopy times and dose area products were comparable to the conventional CB-ablation group (10.5±5 vs 8.8±4 minutes (p=0.23) and 403±425 vs 321±202 cGycm2 (p=0.44), whereas the amount of dye could be significantly reduced (group Ib: 31±10 ml vs group II: 70±20 ml, p<0.0001).
Conclusion
The novel KODEX-EPD PV-occlusion tool allows for accurate PV-occlusion assessment in the majority of PVs and a high acute success rate. The system has the potential to reduce dye and radiation exposure. This should be evaluated in controlled clinical trials.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- L Rottner
- University Heart & Vascular Center Hamburg, Hamburg, Germany
| | - F Moser
- University Heart & Vascular Center Hamburg, Hamburg, Germany
| | - R Schleberger
- University Heart & Vascular Center Hamburg, Hamburg, Germany
| | - J Weimann
- University Heart & Vascular Center Hamburg, Hamburg, Germany
| | - J Moser
- University Heart & Vascular Center Hamburg, Hamburg, Germany
| | - M Lemoine
- University Heart & Vascular Center Hamburg, Hamburg, Germany
| | - P Muenkler
- University Heart & Vascular Center Hamburg, Hamburg, Germany
| | - L Dinshaw
- University Heart & Vascular Center Hamburg, Hamburg, Germany
| | - T Risius
- University Heart & Vascular Center Hamburg, Hamburg, Germany
| | - P Kirchhof
- University Heart & Vascular Center Hamburg, Hamburg, Germany
| | - F Ouyang
- University Heart & Vascular Center Hamburg, Hamburg, Germany
| | - B Reissmann
- University Heart & Vascular Center Hamburg, Hamburg, Germany
| | - A Metzner
- University Heart & Vascular Center Hamburg, Hamburg, Germany
| | - A Rillig
- University Heart & Vascular Center Hamburg, Hamburg, Germany
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14
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Lin H, Cai Z, Zhang Q, Yang W, Yan J, Han L, Ouyang F, Wang J, Wan Z, Ke P, Zhuang J, Huang X. Performances Evaluation of Four Systems for Homocysteine Determination by LC-MS/MS Reference Method. Clin Lab 2021; 67. [PMID: 33739036 DOI: 10.7754/clin.lab.2020.200501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
BACKGROUND The aim of this study is to verify the analytical performance of four homocysteine detection systems made in China and to explore the comparability of homocysteine detection systems by isotope dilution liquid chromatography-tandem mass spectrometry (ID-LC-MS/MS) reference method. METHODS The intra-batch precision, inter-batch precision, accuracy, and linear range of four homocysteine detection systems were evaluated. The ID-LC-MS/MS reference method was used to evaluate the comparability and accuracy of fresh frozen serum samples in four different detection systems of homocysteine. The ID-LC-MS/MS reference method is used to assign samples as calibrators to calibrate each system. The variation and deviation of fresh serum samples between different systems before and after calibration were compared. RESULTS The intra-batch imprecision of the four detection systems was less than 5%, and the coefficient of variation of inter-batch imprecision was less than 6.7%. The precision met the clinical requirements. Before calibration, the results measured by detection system 2 are consistent with the ID-LC-MS/MS reference method, which meets the requirements of accuracy verification. The regression equation of R² ≥ 0.975 in the regression equation of linear analysis of the four systems, the linearity of the four detection systems is good in the range of evaluation concentration, and all of them can meet the declared linear range. The absolute average bias of fresh serum measured by the four detection systems after calibration decreased from 3.76 μmol/L, 0.96 μmol/L, 1.30 μmol/L, -1.56 μmol/L to 0.31 μmol/L, 0.28 μmol/L, 0.4 μmol/L, 0.40 μmol/L, respectively. The relative average bias decreased from 22.6%, 7.50%, 11.0% and -8.50% to 1.98%, 1.78%, 2.59%, 2.34%, respectively. After calibration, the slope and intercept of the regression curve of the fresh serum measured by the four detection systems and the reference method are closer to 1 and 0 than before calibration. CONCLUSIONS The precision, reference interval, and linear evaluation of the four detection systems are good. The ID-LC-MS/MS reference method assigning fresh frozen serum samples as calibrators can improve the accuracy and comparability of the results of different detection systems.
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15
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Zhang Q, Han L, Zheng S, Ouyang F, Wu X, Yan J, Zhan M, Ke P, Zhuang J, Huang X. An isotope dilution liquid chromatography-tandem mass spectrometry candidate reference measurement procedure for aldosterone measurement in human plasma. Anal Bioanal Chem 2021; 413:4471-4481. [PMID: 34018033 DOI: 10.1007/s00216-021-03405-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Revised: 05/04/2021] [Accepted: 05/10/2021] [Indexed: 01/15/2023]
Abstract
Accurate quantitation of aldosterone is clinically important in standardized testing for primary aldosteronism. The results are often variable when performed by clinical immunoassays. To standardize and ensure the accuracy of clinical systems, reference measurement procedures (RMPs) with higher metrological order are required. A simple and reliable isotope dilution LC-IDMS/MS-based measurement procedure for human plasma aldosterone has been developed. This method involved plasma spiked with a deuterium-labelled internal standard, equilibrated for 0.5 h, and extracted by liquid-liquid extraction (LLE) without derivatization. Aldosterone and its structural analogues were baseline separated with a C18-packed UHPLC column with gradient elution within 7 min. The signal intensity variability and measurement imprecision were reduced by bracketing calibration during plasma aldosterone value assignment. The limit of detection (LoD) was 19.4 pmol/L with a signal-to-noise ratio (S/N) > 3. The lowest limit of quantification (LLoQ) was 27.7 pmol/L (S/N > 10 and CV < 10.0%). LLE was performed with 1 mL of n-hexane/ethyl acetate (3:2, v/v), and the extraction recovery was determined to be 92.15 ± 3.54%. The imprecisions were ≤ 3.18% for samples at 124.8, 867.0, and 2628.5 pmol/L. The recoveries were 98.11-101.61%. The relative bias between this candidate RMP and the established RMP was 2.76-1.89%. The linearity response ranged from 27.7 to 2774.4 pmol/L with R2 = 0.999. The method performance met the requirements of RMPs (≤ 5% total CV and ≤ 3% bias). Furthermore, the developed method was applied to evaluate immunoassays through 41 patient sample comparisons. The calibration and measurement capability (CMC) of this method were also evaluated by measuring these samples. The candidate RMP can serve as an accurate reference baseline for routine methods and can be used for value assignment for reference materials. Selected ion chromatograms by LC-MS/MS using a C18 column for aldosterone and its structural analogues.
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Affiliation(s)
- Qiaoxuan Zhang
- Department of Laboratory Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, 510120, Guangdong, China.,Second Clinical Medical College, Guangzhou University of Chinese Medicine, Guangzhou, 510120, Guangdong, China
| | - Liqiao Han
- Department of Laboratory Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, 510120, Guangdong, China
| | - Songbai Zheng
- Fujian Huayin Medical Laboratory Center, Xiamen, 361101, Fujian, China
| | - Fen Ouyang
- Department of Laboratory Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, 510120, Guangdong, China
| | - Xiaobin Wu
- Department of Laboratory Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, 510120, Guangdong, China
| | - Jun Yan
- Department of Laboratory Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, 510120, Guangdong, China
| | - Min Zhan
- Department of Laboratory Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, 510120, Guangdong, China
| | - Peifeng Ke
- Department of Laboratory Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, 510120, Guangdong, China
| | - Junhua Zhuang
- Department of Laboratory Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, 510120, Guangdong, China.
| | - Xianzhang Huang
- Department of Laboratory Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, 510120, Guangdong, China.
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Schenker N, Hashiguchi N, Maurer T, Lemes C, Rottner L, Reissmann B, Rillig A, Kuck KH, Ouyang F, Mathew S. P1361Impact of radiation/chemotherapy for breast cancer on the electroanatomic features in patients receiving catheter ablation for left atrial arrhythmia. Europace 2020. [DOI: 10.1093/europace/euaa162.177] [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: 11/13/2022] Open
Abstract
Abstract
Background
Atrial fibrillation (AF) is a common cardiac arrhythmia and catheter ablation a viable treatment option for patients with AF. Extensive left atrial (LA) scars, frequently seen in patients with persistent AF, can limit its efficacy. Radiation for breast cancer treatment is known to have serious long-term effects (e.g. fibrosis) on the targeted tissue. At the same time, chemotherapy often leads to organ dysfunction. We sought to examine the effects of radiation and chemotherapy on the electroanatomic features of the LA in patients who received catheter ablation for left atrial arrhythmias with prior breast cancer treatment.
Methods and Results
We compared 38 patients (mean age 68.4 ± 7.1 years) who underwent catheter ablation for LA arrhythmia and had a previous diagnosis of breast cancer with 38 patients (mean age 65.4 ± 7.3 years) without breast cancer who formed our control group. LA scar area, as well as its distribution was measured during the electrophysiology (EP) study and graded according to the Utah classification.
The existence of LA scarring did not differ significantly between both groups (71.1% vs. 76.3%, p = 0.602). LA scar area (excluding PVs) was 107.5cm2 ± 19.0cm2 in the breast cancer group compared to 110.1cm2 ± 18.5cm2 in the control group (p = 0.536). The distribution of the scar area revealed no significant difference between both groups, however an involvement of the anterior wall was common (65.8% vs. 73.7%; p = 0.454). We further investigated whether the location of breast cancer had an impact on the LA scar development of the patients in our study cohort. Here, we found no significant difference in the amount of LA scarring when comparing patients with left-sided breast cancer to patients with right-sided breast cancer (66.7% vs. 73.9%). In a sub-analysis patients with breast cancer and persistent AF showed a non-significant trend towards greater LA scar areas (17.4cm2 vs. 6.8cm2) in comparison to patients of the control group with similar LA volumes.
The patient’s age (>65 years) was the only independent predictor for greater LA scarring we could identify. Neither former radiotherapy, nor chemotherapy showed a positive correlation with greater LA scarring.
Conclusion
There is no change in the distribution as well as an increase of the extent of LA scars after thoracic irradiation and/or chemotherapy. A trend towards greater LA scar areas was seen in patients with breast cancer and persistent AF. The patient’s age was identified as an independent predictor for LA scar development.
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Affiliation(s)
- N Schenker
- Asklepios Clinic St. Georg, Hamburg, Germany
| | | | - T Maurer
- Asklepios Clinic St. Georg, Hamburg, Germany
| | - C Lemes
- Asklepios Clinic St. Georg, Hamburg, Germany
| | - L Rottner
- University Heart Center Hamburg, Hamburg, Germany
| | - B Reissmann
- University Heart Center Hamburg, Hamburg, Germany
| | - A Rillig
- University Heart Center Hamburg, Hamburg, Germany
| | - K H Kuck
- Asklepios Clinic St. Georg, Hamburg, Germany
| | - F Ouyang
- Fuwai Hospital, CAMS and PUMC, Beijing, China
| | - S Mathew
- Justus-Liebig University of Giessen, Giessen, Germany
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Li HL, Miao SY, Qiu L, Ouyang F, Xiao LP. Effect of Tin Dioxide Modified F-TiO2/SiO2 Nano-Powder Catalysts on Photocatalytic Degradation of Acrylonitrile. RUSS J APPL CHEM+ 2019. [DOI: 10.1134/s1070427219100161] [Citation(s) in RCA: 1] [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: 11/23/2022]
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18
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Heeger CH, Metzner A, Schlueter M, Rillig A, Mathew S, Fink T, Reissmann B, Lemes C, Maurer T, Santoro F, Schmidt T, Ghanem A, Frerker C, Kuck KH, Ouyang F. 2117Cerebral protection during catheter ablation of ventricular tachycardia in patients with ischemic heart disease. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.2117] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- C H Heeger
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - A Metzner
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - M Schlueter
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - A Rillig
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - S Mathew
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - T Fink
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - B Reissmann
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - C Lemes
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - T Maurer
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - F Santoro
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - T Schmidt
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - A Ghanem
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - C Frerker
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - K H Kuck
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - F Ouyang
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
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Heeger CH, Rillig A, Geisler D, Fink T, Mathew S, Tilz RR, Reissmann B, Lemes C, Maurer T, Santoro F, Alessandrini H, Dotz I, Metzner A, Kuck KH, Ouyang F. P4827Wide area left atrial appendage isolation in patients non responding to pulmonary vein isolation: Benefit, risk and prevention of thromboembolism. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.p4827] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- C H Heeger
- University of Luebeck, Medical clinic II, Luebeck, Germany
| | - A Rillig
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - D Geisler
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - T Fink
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - S Mathew
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - R R Tilz
- University of Luebeck, Medical clinic II, Luebeck, Germany
| | - B Reissmann
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - C Lemes
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - T Maurer
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - F Santoro
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - H Alessandrini
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - I Dotz
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - A Metzner
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - K H Kuck
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - F Ouyang
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
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20
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Heeger CH, Metzner A, Rillig A, Mathew S, Fink T, Reissmann B, Lemes C, Maurer T, Santoro F, Schmidt T, Frerker C, Ghanem A, Kuck KH, Ouyang F. 997Embolic debris captured by a cerebral protection system during catheter ablation of ventricular tachycardia in patients with ischemic heart disease. Europace 2018. [DOI: 10.1093/europace/euy015.546] [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)
- C H Heeger
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - A Metzner
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - A Rillig
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - S Mathew
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - T Fink
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - B Reissmann
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - C Lemes
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - T Maurer
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - F Santoro
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - T Schmidt
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - C Frerker
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - A Ghanem
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - K H Kuck
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - F Ouyang
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
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21
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Heeger CH, Tscholl V, Wissner E, Fink T, Bellmann B, Mathew S, Reissmann B, Lemes C, Maurer T, Goldmann B, Landmesser U, Ouyang F, Kuck KH, Rillig A, Metzner A. P278Acute efficacy, safety and clinical outcomes utilizing the second-generation cryoballoon for pulmonary vein isolation in patients with previously implanted cardiac devices for continuous atrial monito. Europace 2018. [DOI: 10.1093/europace/euy015.090] [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)
- C H Heeger
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - V Tscholl
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - E Wissner
- University of Illinois at Chicago, Cardiology, Chicago, United States of America
| | - T Fink
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - B Bellmann
- Charite - Campus Benjamin Franklin, Cardiology, Berlin, Germany
| | - S Mathew
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - B Reissmann
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - C Lemes
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - T Maurer
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - B Goldmann
- Asklepios Klinik Harburg, Cardiology, Hamburg, Germany
| | - U Landmesser
- Charite - Campus Benjamin Franklin, Cardiology, Berlin, Germany
| | - F Ouyang
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - K H Kuck
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - A Rillig
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - A Metzner
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
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22
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Rottner L, Schmidt T, Dotz I, Lemes C, Heeger CH, Fink T, Mathew S, Reissmann B, Rexha E, Riedl J, Frerker C, Ouyang F, Kuck KH, Metzner A, Maurer T. P1212The clip and the tip: Long-term clinical outcome after ablation of atrial fibrillation in patients with MitraClip. Europace 2018. [DOI: 10.1093/europace/euy015.694] [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)
- L Rottner
- Asklepios Clinic St. Georg, Cardiology, Hamburg, Germany
| | - T Schmidt
- Asklepios Clinic St. Georg, Cardiology, Hamburg, Germany
| | - I Dotz
- Asklepios Clinic St. Georg, Cardiology, Hamburg, Germany
| | - C Lemes
- Asklepios Clinic St. Georg, Cardiology, Hamburg, Germany
| | - C H Heeger
- Asklepios Clinic St. Georg, Cardiology, Hamburg, Germany
| | - T Fink
- Asklepios Clinic St. Georg, Cardiology, Hamburg, Germany
| | - S Mathew
- Asklepios Clinic St. Georg, Cardiology, Hamburg, Germany
| | - B Reissmann
- Asklepios Clinic St. Georg, Cardiology, Hamburg, Germany
| | - E Rexha
- Asklepios Clinic St. Georg, Cardiology, Hamburg, Germany
| | - J Riedl
- Asklepios Clinic St. Georg, Cardiology, Hamburg, Germany
| | - C Frerker
- Asklepios Clinic St. Georg, Cardiology, Hamburg, Germany
| | - F Ouyang
- Asklepios Clinic St. Georg, Cardiology, Hamburg, Germany
| | - K H Kuck
- Asklepios Clinic St. Georg, Cardiology, Hamburg, Germany
| | - A Metzner
- Asklepios Clinic St. Georg, Cardiology, Hamburg, Germany
| | - T Maurer
- Asklepios Clinic St. Georg, Cardiology, Hamburg, Germany
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Mathew S, Maurer T, Lemes C, Heeger C, Reissmann B, Santoro F, Metzner A, Rillig A, Kuck KH, Ouyang F. P296Ablation of ventricular tachycardia in patients with structural heart disease and electrical storm. Europace 2018. [DOI: 10.1093/europace/euy015.108] [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)
- S Mathew
- Asklepios Clinic St. Georg, Hamburg, Germany
| | - T Maurer
- Asklepios Clinic St. Georg, Hamburg, Germany
| | - C Lemes
- Asklepios Clinic St. Georg, Hamburg, Germany
| | - C Heeger
- Asklepios Clinic St. Georg, Hamburg, Germany
| | - B Reissmann
- Asklepios Clinic St. Georg, Hamburg, Germany
| | - F Santoro
- Asklepios Clinic St. Georg, Hamburg, Germany
| | - A Metzner
- Asklepios Clinic St. Georg, Hamburg, Germany
| | - A Rillig
- Asklepios Clinic St. Georg, Hamburg, Germany
| | - K H Kuck
- Asklepios Clinic St. Georg, Hamburg, Germany
| | - F Ouyang
- Asklepios Clinic St. Georg, Hamburg, Germany
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24
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Santoro F, Heeger CH, Heeger CH, Reissmann B, Reissmann B, Maurer T, Maurer T, Fink T, Fink T, Lemes C, Lemes C, Mathew S, Mathew S, Rillig A, Rillig A, Ouyang F, Ouyang F, Kuck KH, Kuck KH, Metzner A, Metzner A. P1155Left atrial appendage flow velocity is an independent predictor of recurrence in patients referred for cryoablation of atrial fibrillation. Europace 2018. [DOI: 10.1093/europace/euy015.641] [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)
- F Santoro
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - C H Heeger
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - C H Heeger
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - B Reissmann
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - B Reissmann
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - T Maurer
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - T Maurer
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - T Fink
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - T Fink
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - C Lemes
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - C Lemes
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - S Mathew
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - S Mathew
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - A Rillig
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - A Rillig
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - F Ouyang
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - F Ouyang
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - K H Kuck
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - K H Kuck
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - A Metzner
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - A Metzner
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
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25
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Santoro F, Mathew S, Heeger CH, Fink T, Maurer T, Lemes C, Reissmann B, Rillig A, Metzner A, Kuck KH, Ouyang F. P293Prognostic significance of Ventricular Tachycardia clustering after catheter ablation in non-ischemic dilated cardiomyopathy. Europace 2018. [DOI: 10.1093/europace/euy015.105] [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)
- F Santoro
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - S Mathew
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - C H Heeger
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - T Fink
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - T Maurer
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - C Lemes
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - B Reissmann
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - A Rillig
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - A Metzner
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - K H Kuck
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - F Ouyang
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
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26
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Santoro F, Metzner A, Reissmann B, Maurer T, Fink T, Heeger CH, Lemes C, Mathew S, Ouyang F, Kuck KH, Rillig A. P365First in-human experience with ablation index to perform left atrial anterior line in patients with persistent atrial fibrillation. Europace 2018. [DOI: 10.1093/europace/euy015.176] [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)
- F Santoro
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - A Metzner
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - B Reissmann
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - T Maurer
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - T Fink
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - C H Heeger
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - C Lemes
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - S Mathew
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - F Ouyang
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - K H Kuck
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - A Rillig
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
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27
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Heeger CH, Rillig A, Tilz RR, Fink T, Mathew S, Reissmann B, Lemes C, Maurer T, Santoro F, Inaba O, Alessandrini H, Dotz I, Metzner A, Kuck KH, Ouyang F. 520Wide area left atrial appendage isolation for atrial fibrillation therapy: Long-term succes and incidence of stroke and thrombus formation. Europace 2018. [DOI: 10.1093/europace/euy015.287] [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)
- C H Heeger
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - A Rillig
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - R R Tilz
- University of Luebeck, Medical clinic II, Luebeck, Germany
| | - T Fink
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - S Mathew
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - B Reissmann
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - C Lemes
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - T Maurer
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - F Santoro
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - O Inaba
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - H Alessandrini
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - I Dotz
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - A Metzner
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - K H Kuck
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - F Ouyang
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
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28
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Sohns C, Heeger CH, Volkmer M, Metzner A, Nuernberg JH, Buchwalsky G, Ventura R, Reinhardt A, Jansen H, Kuck KH, Hebe JH, Ouyang F, Siebels JH. P298VT therapy in patients with noncompaction cardiomyopathy. Europace 2018. [DOI: 10.1093/europace/euy015.110] [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)
- C Sohns
- Elektrophysiologie Bremen, Bremen, Germany
| | - C H Heeger
- Asklepios Clinic St. Georg, Hamburg, Germany
| | - M Volkmer
- Elektrophysiologie Bremen, Bremen, Germany
| | - A Metzner
- Asklepios Clinic St. Georg, Hamburg, Germany
| | | | | | - R Ventura
- Elektrophysiologie Bremen, Bremen, Germany
| | | | - H Jansen
- Elektrophysiologie Bremen, Bremen, Germany
| | - K H Kuck
- Asklepios Clinic St. Georg, Hamburg, Germany
| | - J H Hebe
- Elektrophysiologie Bremen, Bremen, Germany
| | - F Ouyang
- Asklepios Clinic St. Georg, Hamburg, Germany
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29
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Heeger CH, Bellmann B, Fink T, Mathew S, Reissmann B, Lemes C, Maurer T, Santoro F, Sultan A, Plenge T, Ouyang F, Kuck KH, Metzner A, Steven D, Rillig A. P286Safety and long-term clinical success of pulmonary vein isolation utilizing the second generation cryoballoon in patients over 75 years of age: A multicenter study. Europace 2018. [DOI: 10.1093/europace/euy015.098] [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)
- C H Heeger
- University of Luebeck, Medical clinic II, Luebeck, Germany
| | - B Bellmann
- University of Cologne, Cardiology, Cologne, Germany
| | - T Fink
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - S Mathew
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - B Reissmann
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - C Lemes
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - T Maurer
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - F Santoro
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - A Sultan
- University of Cologne, Cardiology, Cologne, Germany
| | - T Plenge
- University of Cologne, Cardiology, Cologne, Germany
| | - F Ouyang
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - K H Kuck
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - A Metzner
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - D Steven
- University of Cologne, Cardiology, Cologne, Germany
| | - A Rillig
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
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Sohns C, Rottner L, Reissmann B, Heeger CH, Lemes CH, Fink T, Volkmer M, Ventura R, Wohlmuth P, Mathew S, Metzner A, Ouyang F, Kuck KH, Maurer T. P835The force awakens: one year clinical outcome after pulmonary vein isolation using the novel ThermoCool SmartTouch Surround Flow catheter. Europace 2018. [DOI: 10.1093/europace/euy015.439] [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)
- C Sohns
- Elektrophysiologie Bremen, Bremen, Germany
| | - L Rottner
- Asklepios Clinic St. Georg, Hamburg, Germany
| | - B Reissmann
- Asklepios Clinic St. Georg, Hamburg, Germany
| | - C H Heeger
- Asklepios Clinic St. Georg, Hamburg, Germany
| | - C H Lemes
- Asklepios Clinic St. Georg, Hamburg, Germany
| | - T Fink
- Asklepios Clinic St. Georg, Hamburg, Germany
| | - M Volkmer
- Elektrophysiologie Bremen, Bremen, Germany
| | - R Ventura
- Elektrophysiologie Bremen, Bremen, Germany
| | - P Wohlmuth
- Asklepios Clinic St. Georg, Hamburg, Germany
| | - S Mathew
- Asklepios Clinic St. Georg, Hamburg, Germany
| | - A Metzner
- Asklepios Clinic St. Georg, Hamburg, Germany
| | - F Ouyang
- Asklepios Clinic St. Georg, Hamburg, Germany
| | - K H Kuck
- Asklepios Clinic St. Georg, Hamburg, Germany
| | - T Maurer
- Asklepios Clinic St. Georg, Hamburg, Germany
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31
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Heeger CH, Bellmann B, Fink T, Mathew S, Reissmann B, Lemes C, Maurer T, Santoro F, Sultan A, Plenge T, Ouyang F, Kuck KH, Metzner A, Steven D, Rillig A. P284Long-term clinical success of pulmonary vein isolation utilizing the second generation cryoballoon in patients with persistent atrial fibrillation: A multicenter study. Europace 2018. [DOI: 10.1093/europace/euy015.096] [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)
- C H Heeger
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - B Bellmann
- University of Cologne, Cardiology, Cologne, Germany
| | - T Fink
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - S Mathew
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - B Reissmann
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - C Lemes
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - T Maurer
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - F Santoro
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - A Sultan
- University of Cologne, Cardiology, Cologne, Germany
| | - T Plenge
- University of Cologne, Cardiology, Cologne, Germany
| | - F Ouyang
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - K H Kuck
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - A Metzner
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
| | - D Steven
- University of Cologne, Cardiology, Cologne, Germany
| | - A Rillig
- Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany
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32
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Fink T, Schlueter M, Heeger CH, Rillig A, Lemes C, Maurer T, Reissmann B, Rottner L, Santoro F, Tilz RR, Mathew S, Ouyang F, Kuck KH, Metzner A. P398Acute and long-term outcomes of epicardial left atrial appendage ligation with the second generation LARIAT device: A European high-volume electrophysiology center experience. Europace 2018. [DOI: 10.1093/europace/euy015.209] [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)
- T Fink
- Asklepios Clinic St. Georg, Cardiology, Hamburg, Germany
| | - M Schlueter
- Asklepios Clinic St. Georg, Cardiology, Hamburg, Germany
| | - C-H Heeger
- Asklepios Clinic St. Georg, Cardiology, Hamburg, Germany
| | - A Rillig
- Asklepios Clinic St. Georg, Cardiology, Hamburg, Germany
| | - C Lemes
- Asklepios Clinic St. Georg, Cardiology, Hamburg, Germany
| | - T Maurer
- Asklepios Clinic St. Georg, Cardiology, Hamburg, Germany
| | - B Reissmann
- Asklepios Clinic St. Georg, Cardiology, Hamburg, Germany
| | - L Rottner
- Asklepios Clinic St. Georg, Cardiology, Hamburg, Germany
| | - F Santoro
- Asklepios Clinic St. Georg, Cardiology, Hamburg, Germany
| | - R R Tilz
- Asklepios Clinic St. Georg, Cardiology, Hamburg, Germany
| | - S Mathew
- Asklepios Clinic St. Georg, Cardiology, Hamburg, Germany
| | - F Ouyang
- Asklepios Clinic St. Georg, Cardiology, Hamburg, Germany
| | - K H Kuck
- Asklepios Clinic St. Georg, Cardiology, Hamburg, Germany
| | - A Metzner
- Asklepios Clinic St. Georg, Cardiology, Hamburg, Germany
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Luo X, Zhang B, Lian Z, Dong Y, Liu J, Pei S, Mo X, Zhang L, Huang W, Ouyang F, Guo B, Liang C, Zhang S. Value of two-cycle docetaxel, cisplatin, and 5-fluorouracil induction chemotherapy in hypopharyngeal carcinoma. Neoplasma 2018; 65:269-277. [PMID: 29368529 DOI: 10.4149/neo_2018_170213n102] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Various studies have investigated laryngeal function and survival after induction chemotherapy in hypopharyngeal carcinoma, but potential factors to help predict response rates after induction chemotherapy remain unknown. This retro- spective study evaluated which factors are related to an ineffective response to two-cycle docetaxel, cisplatin, and 5-fluoro- uracil (TPF) induction chemotherapy in hypopharyngeal carcinoma to determine potential candidates for this treatment in clinical practice. From Jan 2005 to Dec 2015, 81 patients diagnosed with hypopharyngeal squamous cell carcinoma based on a pathological examination were analyzed. They were administered two-cycle TPF induction chemotherapy, and magnetic resonance imaging was performed before and after induction chemotherapy. The mean survival time was 5.7 years (95% confidence interval, 5.1-6.2 years). The 1, 3, 5 and 6-year survival rates were 98.8%, 80.1%, 64.5%, and 54.2%, respectively. TPF induction chemotherapy was well tolerated; the main adverse effects resolved with symptomatic treatment. A response to TPF induction chemotherapy was associated with lymph node size, tumor grade, invasion region, T stage, and primary tumor. The following issues were significantly associated with an increasing non-response rate to two-cycle induction chemotherapy: increasing lymph node size, moderately differentiated squamous cell carcinoma, invasion of the esophagus along with the thyroid cartilage, and primary tumor in the piriform sinus. Lymph nodes of ≥2.15 cm, moderately differenti- ated tumor grade, or thyroid cartilage invasion were the best cutoff values for patients who did not respond to induction chemotherapy. However, the initial cancer site, cancer stage, and degree of cancer differentiation were not closely related to the efficacy of induction chemotherapy.
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Lemes C, Sohns C, Maurer T, Chmelevsky M, Budanova M, Mathew S, Fink T, Reissmann B, Heeger C, Ouyang F, Kuck K, Metzner A. P5513Rotor distribution and stability in atrial fibrillation using a non invasive body-surface mapping system. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx493.p5513] [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: 11/12/2022] Open
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Maurer T, Sohns C, Metzner A, Rottner L, Riedl J, Reissmann B, Heeger CH, Lemes C, Fink T, Santoro F, Mathew S, Kuck KH, Ouyang F. P1713A balancing act - contact force along the anterior aspect of the lateral pulmonary veins during catheter ablation of atrial fibrillation. Europace 2017. [DOI: 10.1093/ehjci/eux161.023] [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: 11/14/2022] Open
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36
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Hayashi K, Heeger CH, Saguner AM, Mathew S, Maurer T, Lemes C, Riedl J, Sohns C, Santoro F, Reissmann B, Tilz RR, Metzner A, Kuck KH, Ouyang F. P1054Antegrade-transseptal approach for left ventricular tachyarrhythmia in patients with previous mitraclip implantation. Europace 2017. [DOI: 10.1093/ehjci/eux151.233] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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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37
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Heeger C, Wissner E, Knoell M, Knoop B, Reissmann B, Mathew S, Lemes C, Maurer T, Santoro F, Riedl J, Inaba O, Goldmann B, Ouyang F, Kuck KH, Metzner A. P326Three-year clinical outcome after second-generation cryoballoon based pulmonary vein isolation for the treatment of paroxysmal and persistent atrial fibrillation: A two-center experience. Europace 2017. [DOI: 10.1093/ehjci/eux141.053] [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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38
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Maurer T, Metzner A, Wohlmuth P, Reissmann B, Heeger CH, Lemes C, Fink T, Hayashi K, Saguner AM, Riedl J, Sohns C, Mathew S, Wissner E, Kuck KH, Ouyang F. P1712A novel design for the mitral isthmus line reducing the need for epicardial ablation. Europace 2017. [DOI: 10.1093/ehjci/eux161.022] [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: 11/14/2022] Open
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Santoro F, Heeger CH, Zhang P, Inaba O, Reissmann B, Maurer T, Lemes C, Riedl J, Fink T, Mathew S, Metzner A, Kuck KH, Ouyang F. P1051P wave morphology during pacing inside pulmonary veins and prevalence of m wave pattern on 12 lead surface ECG. Europace 2017. [DOI: 10.1093/ehjci/eux151.230] [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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40
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Saguner AM, Mathew S, Schenker N, Metzner A, Santoro F, Reissmann B, Yashuiro Y, Maurer T, Lemes C, Heeger CH, Riedl J, Sohns C, Kuck KH, Ouyang F. P482Catheter ablation of ventricular tachycardia in patients with arrhythmogenic right ventricular cardiomyopathy/dysplasia - the hamburg sequential approach. Europace 2017. [DOI: 10.1093/ehjci/eux141.205] [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: 11/14/2022] Open
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41
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Lemes C, Sohns C, Maurer T, Chmelevsky M, Budanova M, Reissmann B, Mathew S, Heeger C, Ouyang F, Kuck KH, Metzner A. P291Rotor distribution and stability in atrial fibrillation using a non invasive body-surface mapping system. Europace 2017. [DOI: 10.1093/ehjci/eux141.019] [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: 11/12/2022] Open
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42
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Rexha E, Riedl J, Lemes C, Maurer T, Reissmann B, Heeger C, Rottner L, Santoro F, Sohns C, Metzner A, Kuck K, Ouyang F, Mathew S. P328Initial clinical results with a novel contact force sensing catheter: assessment of safety and feasibility. Europace 2017. [DOI: 10.1093/ehjci/eux141.055] [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: 11/12/2022] Open
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43
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Heeger C, Rillig A, Wissner E, Tscholl V, Bellmann B, Roser M, Mathew S, Sohns C, Reissmann B, Lemes C, Maurer T, Goldmann B, Ouyang F, Kuck KH, Metzner A. P325Acute efficacy, safety and long-term clinical outcomes utilizing the second-generation cryoballoon for pulmonary vein isolation in patients with a left common pulmonary vein. Europace 2017. [DOI: 10.1093/ehjci/eux141.052] [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: 11/14/2022] Open
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44
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Maurer T, Sohns C, Deiss S, Rottner L, Wohlmuth P, Reissmann B, Heeger CH, Lemes C, Riedl J, Santoro F, Mathew S, Metzner A, Ouyang F, Kuck KH, Wissner E. P1711Significant reduction in procedure duration in remote magnetic-guided catheter ablation of atrial fibrillation using the third-generation magnetic navigation system. Europace 2017. [DOI: 10.1093/ehjci/eux161.021] [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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45
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Rexha E, Metzner A, Wissner E, Reissmann B, Maurer T, Heeger C, Lemes C, Rottner L, Fink T, Riedl J, Santoro F, Mathew S, Ouyang F, Kuck K, Sohns C. 758Man vs. Maschine for ablation of ventricular arrhythmias: a direct comparison of remote magnetic navigation versus manual-guided ablation of ventricular arrhythmias. Europace 2017. [DOI: 10.1093/ehjci/eux147.007] [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: 11/14/2022] Open
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46
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Heeger C, Rillig A, Tilz RR, Fink T, Mathew S, Reissmann B, Lemes C, Maurer T, Santoro F, Riedl J, Sohns C, Metzner A, Kuck KH, Ouyang F. P245Long-term outcome and incidence of embolic stroke and left atrial appendage thrombus formation after electrical isolation of the left atrial appendage for the treatment of atrial tachyarrhythmias. Europace 2017. [DOI: 10.1093/ehjci/eux171.002] [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: 11/14/2022] Open
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47
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Sohns C, Maurer T, Rottner L, Heeger CH, Fink T, Lemes C, Mathew S, Reissmann B, Rexha E, Riedl J, Santoro F, Metzner A, Ouyang F, Kuck KH. P308Never underestimate the power of the force: lessions from catheter ablation of atrial fibrillation using the novel thermocool smarttouch surround flow ablation catheter. Europace 2017. [DOI: 10.1093/ehjci/eux141.035] [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: 11/14/2022] Open
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48
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Rexha E, Metzner A, Wissner E, Mathew S, Reissmann B, Maurer T, Heeger C, Lemes C, Rottner L, Fink T, Riedl J, Santoro F, Ouyang F, Kuck K, Sohns C. P391Current role and further prospective of catheter ablation of ventricular arrhythmias using Remote Magnetic Navigation: A single center observational study. Europace 2017. [DOI: 10.1093/ehjci/eux141.116] [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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49
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Heeger CH, Kuck KH, Ouyang F. Pulmonalvenenisolation bei Vorhofflimmern. Herz 2017; 42:343-351. [DOI: 10.1007/s00059-017-4565-2] [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: 10/19/2022]
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Zhu Y, Lü H, Horton R, Yu Z, Ouyang F. A Modified Soil Moisture Model for Two-Layer Soil. Ground Water 2016; 54:569-578. [PMID: 26728919 DOI: 10.1111/gwat.12387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2014] [Accepted: 11/08/2015] [Indexed: 06/05/2023]
Abstract
There can be marked variations in soil hydraulic properties in a soil vertical profile from the soil surface to the base of the root zone. Many existing two-layer soil moisture (TLSM) models cannot well describe typical stratified soil profiles. A modified TLSM model is presented in this study. The modified model results and those from two existing models are compared with field observations. The modified TLSM model had the best agreement with the field observations. In both the surface layer and the root zone layer, the root mean square errors of soil moisture estimated by the modified model were smaller than those for the other models. The parameters in the modified TLSM model are relatively easy to determine. The modified TLSM model offers clear advantages over current TLSM models.
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Affiliation(s)
- Yonghua Zhu
- State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing, 210098, China
| | - Haishen Lü
- State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing, 210098, China
| | - Robert Horton
- Department of Agronomy, Iowa State University, Ames, IA, 50011
| | - Zhongbo Yu
- State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing, 210098, China
| | - Fen Ouyang
- State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing, 210098, China
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