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Kapusta L, Beer G, Rothschild E, Baruch G, Barkay G, Marom D, Grinshpun-Cohen Y, Raskind C, Constantini S, Toledano-Alhadef H. Cardiac screening in pediatric patients with neurofibromatosis type 1: similarities with Noonan syndrome? Int J Cardiovasc Imaging 2024:10.1007/s10554-024-03125-8. [PMID: 38739321 DOI: 10.1007/s10554-024-03125-8] [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: 02/24/2024] [Accepted: 04/28/2024] [Indexed: 05/14/2024]
Abstract
Both Neurofibromatosis type 1 (NF1) and Noonan syndrome (NS) are RASopathies. Characteristic cardiac phenotypes of NS, including specific electrocardiographic changes, pulmonary valve stenosis and hypertrophic cardiomyopathy have not been completely studied in NF1. PURPOSE The aims of this study were to assess: (1) similarities in the prevalence and types of ECG and conventional echocardiographic findings described in NS in asymptomatic patients with NF1, and (2) the presence of discrete myocardial dysfunction in NF1 patients using myocardial strain imaging. METHODS Fifty-eight patients with NF1 (ages 0-18 years), and thirty-one age-matched healthy controls underwent cardiac assessment including blood pressure measurements, a 12-lead ECG, and detailed echocardiography. Quantification of cardiac chamber size, mass and function were measured using conventional echocardiography. Myocardial strain parameters were assessed using 2-Dimensional (2D) Speckle tracking echocardiography. RESULTS Asymptomatic patients with NF1 had normal electrocardiograms, none with the typical ECG patterns described in NS. However, patients with NF1 showed significantly decreased calculated Z scores of the left ventricular internal diameter in diastole and systole, reduced left ventricular mass index and a higher incidence of cardiac abnormal findings, mainly of the mitral valve, in contrast to the frequently described types of cardiac abnormalities in NS. Peak and end systolic global circumferential strain were the only significantly reduced speckle tracking derived myocardial strain parameter. CONCLUSIONS Children with NF1 demonstrated more dissimilarities than similarities in the prevalence and types of ECG and conventional echocardiographic findings described in NS. The role of the abnormal myocardial strain parameter needs to be explored.
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Affiliation(s)
- Livia Kapusta
- Pediatric Cardiology Unit, Faculty of Medicine, Dana-Dwek children's hospital, Tel Aviv Sourasky Medical Center, Tel Aviv University, Tel Aviv, Israel
- Department of Pediatrics, Amalia Children's Hospital, Radboud University Medical Centre, Nijmegen, The Netherlands
| | - Gil Beer
- Pediatric Cardiology Unit, Faculty of Medicine, Dana-Dwek children's hospital, Tel Aviv Sourasky Medical Center, Tel Aviv University, Tel Aviv, Israel
| | - Ehud Rothschild
- Department of Internal medicine, Tel-Aviv Sourasky Medical Center, Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Guy Baruch
- Department of Internal medicine, Tel-Aviv Sourasky Medical Center, Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Gili Barkay
- Gilbert Israeli and International Neurofibromatosis Center and the Child Neurology Institute and Child Development Center, Faculty of Medicine, Dana-Dwek Children's Hospital, Tel Aviv Sourasky Medical Center, Tel Aviv University, 6 Weizmann Street, Tel Aviv, 6423906, Israel
| | - Daphna Marom
- Genetic Institute, Faculty of Medicine, Tel Aviv Sourasky Medical Center, Tel Aviv University, Tel Aviv, Israel
| | - Yulia Grinshpun-Cohen
- Gilbert Israeli and International Neurofibromatosis Center and the Child Neurology Institute and Child Development Center, Faculty of Medicine, Dana-Dwek Children's Hospital, Tel Aviv Sourasky Medical Center, Tel Aviv University, 6 Weizmann Street, Tel Aviv, 6423906, Israel
- Genetic Institute, Faculty of Medicine, Tel Aviv Sourasky Medical Center, Tel Aviv University, Tel Aviv, Israel
| | - Craig Raskind
- Department of Neonatology, Faculty of Medicine, Tel Aviv Sourasky Medical Center, Tel Aviv University, Tel Aviv, Israel
| | - Shlomi Constantini
- Gilbert Israeli and International Neurofibromatosis Center and the Child Neurology Institute and Child Development Center, Faculty of Medicine, Dana-Dwek Children's Hospital, Tel Aviv Sourasky Medical Center, Tel Aviv University, 6 Weizmann Street, Tel Aviv, 6423906, Israel
- Department of Pediatric Neurosurgery, The Pediatric Brain Institute, Faculty of Medicine, Dana-Dwek Children's Hospital, Tel Aviv Sourasky Medical Center, Tel Aviv University, Tel Aviv, Israel
| | - Hagit Toledano-Alhadef
- Gilbert Israeli and International Neurofibromatosis Center and the Child Neurology Institute and Child Development Center, Faculty of Medicine, Dana-Dwek Children's Hospital, Tel Aviv Sourasky Medical Center, Tel Aviv University, 6 Weizmann Street, Tel Aviv, 6423906, Israel.
- Child Neurology Institute and Child development Center, Faculty of Medicine, Dana-Dwek Children's Hospital, Tel Aviv Sourasky Medical Center, Tel Aviv University, Tel Aviv, Israel.
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Giorgione V, Krajden Haratz K, Gull I, Brusilov M, Birnbaum R, Blecher Y, Malinger G, Kaplan A, Beer G, Kapusta L. Myocardial Function in Fetuses with Congenital Cytomegalovirus Infection. Fetal Diagn Ther 2023; 50:430-437. [PMID: 37517386 DOI: 10.1159/000533280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Accepted: 07/14/2023] [Indexed: 08/01/2023]
Abstract
INTRODUCTION The objective of this study was to investigate myocardial deformation of left (LV) and right ventricle (RV) using 2-dimensional speckle-tracking echocardiography (2D-STE) in fetuses with and without congenital cytomegalovirus (CMV) infection. METHODS This was a prospective single-center study. Vertical transmission was defined by a positive CMV polymerase chain reaction (PCR) test on the amniotic fluid or on the neonate's urine. Fetuses were divided into group 1 and group 2 if CMV-PCR was positive or negative, respectively. LV and RV global longitudinal strain (GLS) values were obtained and adjusted for gestational age by calculating Z-scores. Univariate analysis was carried out to compare cardiac indices between group 1 and group 2. RESULTS Fetuses from group 1 (n = 11) had a significantly lower LV myocardial shortening than those from group 2 (n = 32). GLS was -20.7 ± 5.2% and -26.3 ± 4.1%, respectively (p = 0.001). Similarly, GLS Z-score was lower (0.02 ± 0.72) in group 1 than in group 2 (-0.80 ± 0.59) (p = 0.001). Similarly, RV GLS Z-score was significantly impaired in group 1 compared to group 2 (-0.44 ± 1.03 vs. -1.04 ± 0.71, p = 0.041). CONCLUSION Fetuses with congenital CMV showed subclinical biventricular myocardial dysfunction. Further studies are needed to confirm the potential role of 2D-STE in identifying fetuses with congenital CMV at risk of postnatal cardiovascular morbidities.
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Affiliation(s)
- Veronica Giorgione
- Division of ObGyn Ultrasound, Lis Maternity and Women's Health Hospital, Tel Aviv Sourasky Medical Center, Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel,
- Molecular and Clinical Sciences Research Institute, St George's University of London, London, UK,
| | - Karina Krajden Haratz
- Division of ObGyn Ultrasound, Lis Maternity and Women's Health Hospital, Tel Aviv Sourasky Medical Center, Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Ilan Gull
- Division of ObGyn Ultrasound, Lis Maternity and Women's Health Hospital, Tel Aviv Sourasky Medical Center, Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Michael Brusilov
- Division of ObGyn Ultrasound, Lis Maternity and Women's Health Hospital, Tel Aviv Sourasky Medical Center, Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Roee Birnbaum
- Division of ObGyn Ultrasound, Lis Maternity and Women's Health Hospital, Tel Aviv Sourasky Medical Center, Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Yair Blecher
- Division of ObGyn Ultrasound, Lis Maternity and Women's Health Hospital, Tel Aviv Sourasky Medical Center, Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Gustavo Malinger
- Division of ObGyn Ultrasound, Lis Maternity and Women's Health Hospital, Tel Aviv Sourasky Medical Center, Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Alon Kaplan
- The Chaim Sheba Medical Center, Tel Hashomer, Ramat-Gan, Israel
| | - Gil Beer
- Department of Pediatrics, Pediatric Cardiology Unit, Dana Dwek Children's Hospital, Tel Aviv Sourasky Medical Center, Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Livia Kapusta
- Department of Pediatrics, Pediatric Cardiology Unit, Dana Dwek Children's Hospital, Tel Aviv Sourasky Medical Center, Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
- Department of Pediatrics, Amalia Children's Hospital, Radboud University Medical Center, Nijmegen, The Netherlands
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Ben-Joya D, Kaplan A, Baruch G, Rothschild E, Beer G, Banai S, Topilsky Y, Kapusta L, Laufer-Perl M. The prevalence of abnormal right ventricle speckle strain in the setting of acute myocarditis and preserved left ventricle function. Int J Cardiovasc Imaging 2023:10.1007/s10554-023-02829-7. [PMID: 37149840 PMCID: PMC10163986 DOI: 10.1007/s10554-023-02829-7] [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] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Accepted: 03/03/2023] [Indexed: 05/08/2023]
Abstract
BACKGROUND Acute myocarditis has a wide spectrum of clinical presentation, from subclinical disease to acute heart failure, and sudden cardiac death. Two-dimensional speckle tracking echocardiography (2D-STE) has been proven effective in early diagnosis of subclinical cardiac injury, however, there is a limited data regarding the right ventricle (RV) involvement among patients with acute myocarditis. PURPOSE We evaluated the prevalence of early subclinical RV injury assessed by 2D-STE, among patients with acute myocarditis and preserved left ventricle (LV) function. METHODS We performed a retrospective single-center study at Tel-Aviv Sourasky Medical Center, including all adult patients hospitalized with acute myocarditis, who presented with preserved LV function. 2D-STE analysis of the RV was performed offline, assessing both the RV four-chamber longitudinal strain peak systolic (RV4CLS PK) and the free wall longitudinal strain peak systolic (RVFWLS PK). The myocarditis group was compared to a healthy control group. RESULTS From 2011 to 2020, a total of 90 patients included in the study and were compared to 70 healthy subjects. RV 2D-STE emerged as significantly lower for both the RV4CLS PK (-21.8 ± 4.2 vs. -24.9 ± 4.8, P < 0.001) and RVFWLS PK (-24.7 ± 4.9 vs. -28.4 ± 5, P < 0.001), and remained significant in a multivariate analysis. CONCLUSION We presented for the first time the presence of subclinical RV dysfunction, assessed by 2D-STE, in patients diagnosed with acute myocarditis, in the presence of preserved LV function. Further studies are needed to evaluate its' role in the development of LV dysfunction, heart failure and mortality.
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Affiliation(s)
- Daniel Ben-Joya
- Department of Cardiology, Tel Aviv Sourasky Medical Center, 6 Weizman Street, 6423906, Tel Aviv, Israel
- Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Alon Kaplan
- Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
- Chaim Sheba Medical Center, Tel Hashomer, Israel
| | - Guy Baruch
- Department of Cardiology, Tel Aviv Sourasky Medical Center, 6 Weizman Street, 6423906, Tel Aviv, Israel
- Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Ehud Rothschild
- Department of Cardiology, Tel Aviv Sourasky Medical Center, 6 Weizman Street, 6423906, Tel Aviv, Israel
- Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Gil Beer
- Pediatric Cardiology Unit, Tel-Aviv Sourasky Medical Center, Tel Aviv, Israel
- Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Shmuel Banai
- Department of Cardiology, Tel Aviv Sourasky Medical Center, 6 Weizman Street, 6423906, Tel Aviv, Israel
- Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Yan Topilsky
- Department of Cardiology, Tel Aviv Sourasky Medical Center, 6 Weizman Street, 6423906, Tel Aviv, Israel
- Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Livia Kapusta
- Pediatric Cardiology Unit, Tel-Aviv Sourasky Medical Center, Tel Aviv, Israel
- Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
- Department of Pediatric Cardiology, Amalia Children's Hospital, Radboud University Medical Centre, Nijmegen, The Netherlands
| | - Michal Laufer-Perl
- Department of Cardiology, Tel Aviv Sourasky Medical Center, 6 Weizman Street, 6423906, Tel Aviv, Israel.
- Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel.
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Rothschild E, Baruch G, Kaplan A, Laufer-Perl M, Beer G, Kapusta L, Topilsky Y. The prognostic value of right ventricular strain and mechanical dispersion on mortality in patients with normal left ventricle function. Int J Cardiol 2023; 372:130-137. [PMID: 36450336 DOI: 10.1016/j.ijcard.2022.11.040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Revised: 11/15/2022] [Accepted: 11/22/2022] [Indexed: 11/29/2022]
Abstract
AIMS We aimed to assess if right ventricular (RV) 4-chamber longitudinal strain (RV4CLS), RV free wall longitudinal strain (RVFWLS) and RV mechanical dispersion index (RVMDI) have prognostic independent value in patients with preserved ejection fraction (pEF), without clearly elevated LV filling pressure. METHODS Retrospective analysis of Peak RV4CLS, RVFWLS, RVMDI and comprehensive echocardiographic assessment including left ventricle (LV), atrium (LA) strain and RV parameters in patients with pEF (EF ≥ 50%; E/e' < 14). Multivariate Cox regression hazards model were used to determine the independent association between RV strain parameters to all-cause mortality and cardiovascular events. RESULTS We analyzed 224 consecutive patients with pEF (age 65.2 ± 19.8, 44% female, Charlson Comorbidity Index median = 3.8), with all-cause mortality of 64 patients and 28 cardiovascular events, during a median follow-up of 8.2 years (interquartile range: 6.8 to 8.4 years). The best strain univariate predictors of mortality were RV4CSL [1.16 (1.07-1.26); p = 0.0001] and RVMDI [1.01 (1.001-1.02); p = 0.02] being superior to LV and LA strain, or other RV functional indices. Moreover, after adjustment for clinical (age, gender, Charlson Comorbidity Index), conventional echocardiographic parameters (LA volume, E/e' average, LVEDD, routine RV functional indices), LV and LA STE, RV4CLS and RVFWLS remained statistically significant associates of all-cause mortality and cardiac events. RV4CLS, or RVFWLS remained statistically significant associated for all-cause mortality, after additional adjustment for RVFAC and RVMDI. CONCLUSIONS RV4CSL and RVMDI provide significant prognostic additive value in patients with preserved ejection fraction with excellent reproducibility, incremental to routine clinical, hemodynamic and LV and LA STE parameters.
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Affiliation(s)
- Ehud Rothschild
- Department of Cardiology, Tel Aviv Sourasky Medical Center and Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel; Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Guy Baruch
- Department of Cardiology, Tel Aviv Sourasky Medical Center and Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel; Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Alon Kaplan
- Department of Cardiology, Tel Aviv Sourasky Medical Center and Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel; Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Michal Laufer-Perl
- Department of Cardiology, Tel Aviv Sourasky Medical Center and Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Gil Beer
- Department of Paediatrics, Paediatric Cardiology Unit, Tel Aviv Sourasky Medical Centre and Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Livia Kapusta
- Department of Paediatrics, Paediatric Cardiology Unit, Tel Aviv Sourasky Medical Centre and Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel; Department of Paediatric Cardiology, Amalia Children's Hospital, Radboud University Medical Centre, Nijmegen, the Netherlands
| | - Yan Topilsky
- Department of Cardiology, Tel Aviv Sourasky Medical Center and Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel.
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Ministrini S, Liberale L, Beer G, Puspitasari YM, Schwarz L, Niederberger R, Katan Kahles M, Bacigaluppi M, Akhmedov A, Montecucco F, Luescher TF, Camici GG. Endothelial expression of JCAD worsens outcome after acute ischemic stroke: a translational study. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.1993] [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
Introduction
Despite the increasing availability of early reperfusion, acute ischemic stroke (AIS) is still burdened by high mortality and long-time disability. Junctional protein associated with Coronary Artery Disease (JCAD) was associated to multiple cardiovascular disorders, but its role in AIS has not been investigated so far.
Purpose
To investigate the role of endothelial JCAD in the pathogenesis of AIS and its potential as a therapeutic target.
Methods
Cerebral ischemia was induced by transient Middle Cerebral Artery Occlusion (tMCAO) in mice with either global or endothelial-specific JCAD genetic deletion, and littermate controls. Stroke size was assessed ex-vivo by tetrazolium chloride staining 48 hours after reperfusion. For neurological assessment, RotaRod Test and Bederson score were recorded 24 and 48 hours after reperfusion. In vivo silencing of JCAD was achieved by intravenous injection of a JCAD small interfering RNA (siRNA) after tMCAO.
In parallel, JCAD silencing was performed in vitro in human brain microvascular endothelial cells (HBMVECs) using siRNA transfection, followed by hypoxia/reoxygenation (H/R) injury. Cell death and trans-endothelial electrical resistance (TEER) were measured by LDH assay and electrical cell-substrate impedance sensing, respectively. Molecular mechanisms were investigated in vivo by immunohistochemistry and in vitro by Western blot, respectively.
Lastly, JCAD plasma levels were measured by ELISA in two independent cohorts of patients with AIS.
Results
The expression of JCAD was up-regulated in the ipsilateral hemisphere of stroke in wild-type mice. Both global and endothelial-specific JCAD knockout mice displayed reduced stroke size after tMCAO and a significantly improved Bederson score. Similarly, mice with post-ischemic JCAD silencing had a reduced stroke size and a better motor performance at the RotaRod test (Figure 1).
In vitro, JCAD-silenced HBMVECs showed a reduced cell death rate and a higher TEER after H/R injury, compared to controls. JCAD-silenced HBMVECs also had an increased phosphorylation of Akt. After treatment with the Akt/PI3K inhibitor Wortmannin, JCAD-silenced HBMVECs showed similar TEER and cell death rates to non-silenced cells, following H/R (Figure 2).
Lastly, an increase of circulating levels of JCAD was observed in patients with AIS within 24 hours from symptoms onset. Furthermore, higher levels of JCAD at the time of hospitalization were associated with a higher risk of death within 90 days after the event.
Conclusions
JCAD expression is associated with a larger brain damage in mice in vivo and with a higher mortality in patients. In vitro results suggest that JCAD plays a pivotal role in regulating the integrity of endothelium after a H/R injury, inducing cellular death through the inhibition of the Akt/PI3K pathway. Thus, post-ischemic silencing of JCAD may represent a therapeutic strategy to improve the prognosis of patients with acute ischemic stroke.
Funding Acknowledgement
Type of funding sources: Public grant(s) – National budget only. Main funding source(s): Swiss National Science Foundation
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Affiliation(s)
- S Ministrini
- University of Zurich, Center for Molecular Cardiology , Zurich , Switzerland
| | - L Liberale
- University of Genoa, Department of Internal Medicine and Medical Specialities , Genova , Italy
| | - G Beer
- University of Zurich, Center for Molecular Cardiology , Zurich , Switzerland
| | - Y M Puspitasari
- University of Zurich, Center for Molecular Cardiology , Zurich , Switzerland
| | - L Schwarz
- University of Zurich, Center for Molecular Cardiology , Zurich , Switzerland
| | - R Niederberger
- University of Zurich, Center for Molecular Cardiology , Zurich , Switzerland
| | | | | | - A Akhmedov
- University of Zurich, Center for Molecular Cardiology , Zurich , Switzerland
| | - F Montecucco
- University of Genoa, Department of Internal Medicine and Medical Specialities , Genova , Italy
| | - T F Luescher
- University of Zurich, Center for Molecular Cardiology , Zurich , Switzerland
| | - G G Camici
- University of Zurich, Center for Molecular Cardiology , Zurich , Switzerland
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Liberale L, Arnold M, Ministrini S, Puspitasari Y, Beer G, Montecucco F, Katan M, Camici G. High and low levels of serum Sirtuin6 in patients with acute ischemic stroke. Atherosclerosis 2022. [DOI: 10.1016/j.atherosclerosis.2022.06.943] [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: 11/02/2022]
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Laufer-Perl M, Perelman-Gvili M, Sirota Dorfman S, Baruch G, Rothschild E, Beer G, Arbel Y, Arnold JH, Rozenbaum Z, Banai S, Topilsky Y, Kapusta L. Prevalence of Right Ventricle Strain Changes following Anthracycline Therapy. Life (Basel) 2022; 12:life12020291. [PMID: 35207578 PMCID: PMC8877607 DOI: 10.3390/life12020291] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Revised: 02/04/2022] [Accepted: 02/11/2022] [Indexed: 11/16/2022] Open
Abstract
Background: Anthracycline (ANT) is the most recognized therapy known to cause cardiotoxicity, mainly left ventricle (LV) dysfunction. Global Longitudinal Strain (GLS) is the optimal tool for assessment of subclinical LV dysfunction. Right ventricle (RV) function has been recognized as an independent factor for cardiac outcomes; however, data evaluating RV GLS is limited. We aimed to evaluate the change in RV GLS following ANT therapy. Methods: The study cohort is part of the Israel Cardio-Oncology Registry (ICOR). All patients performed echocardiography before (T1) and at the end (T3) of ANT therapy. A significant reduction was defined as a relative reduction of ≥10% in RV GLS values. Results: The study included 40 female patients with breast cancer treated with ANT. During follow-up, both RV GLS and free wall longitudinal strain systolic peak (RV FWLS PK) decreased significantly (p < 0.001 and p = 0.002). Altogether, 30 (75%) and 23 (58%) patients showed RV GLS and RV FWLS PK ≥ 10% relative reduction. At T3, LV ejection fraction and LV GLS were within normal range. Conclusions: RV GLS and RV FWLS PK reduction following ANT exposure is extremely frequent, comparing to LV GLS reduction.
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Affiliation(s)
- Michal Laufer-Perl
- Department of Cardiology, Tel Aviv Sourasky Medical Center, 6 Weizman Street, Tel Aviv 6423906, Israel; (S.S.D.); (G.B.); (E.R.); (Y.A.); (Z.R.); (S.B.); (Y.T.)
- Sackler School of Medicine, Tel Aviv University, Ramat Aviv, P.O. Box 39040, Tel Aviv 6997801, Israel; (G.B.); (J.H.A.); (L.K.)
- Correspondence: (M.L.-P.); (M.P.-G.); Tel.: +972-3-6974509 (M.L.-P.); Fax: +972-3-6974388 (M.L.-P.)
| | - Moran Perelman-Gvili
- Sackler School of Medicine, Tel Aviv University, Ramat Aviv, P.O. Box 39040, Tel Aviv 6997801, Israel; (G.B.); (J.H.A.); (L.K.)
- Internal Medicine T, Tel Aviv Sourasky Medical Center, 6 Weizman Street, Tel Aviv 6423906, Israel
- Correspondence: (M.L.-P.); (M.P.-G.); Tel.: +972-3-6974509 (M.L.-P.); Fax: +972-3-6974388 (M.L.-P.)
| | - Svetlana Sirota Dorfman
- Department of Cardiology, Tel Aviv Sourasky Medical Center, 6 Weizman Street, Tel Aviv 6423906, Israel; (S.S.D.); (G.B.); (E.R.); (Y.A.); (Z.R.); (S.B.); (Y.T.)
- Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva 8410501, Israel
| | - Guy Baruch
- Department of Cardiology, Tel Aviv Sourasky Medical Center, 6 Weizman Street, Tel Aviv 6423906, Israel; (S.S.D.); (G.B.); (E.R.); (Y.A.); (Z.R.); (S.B.); (Y.T.)
- Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva 8410501, Israel
| | - Ehud Rothschild
- Department of Cardiology, Tel Aviv Sourasky Medical Center, 6 Weizman Street, Tel Aviv 6423906, Israel; (S.S.D.); (G.B.); (E.R.); (Y.A.); (Z.R.); (S.B.); (Y.T.)
- Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva 8410501, Israel
| | - Gil Beer
- Sackler School of Medicine, Tel Aviv University, Ramat Aviv, P.O. Box 39040, Tel Aviv 6997801, Israel; (G.B.); (J.H.A.); (L.K.)
- Pediatric Cardiology Unit, Tel Aviv Sourasky Medical Center, 6 Weizman Street, Tel Aviv 6423906, Israel
| | - Yaron Arbel
- Department of Cardiology, Tel Aviv Sourasky Medical Center, 6 Weizman Street, Tel Aviv 6423906, Israel; (S.S.D.); (G.B.); (E.R.); (Y.A.); (Z.R.); (S.B.); (Y.T.)
- Sackler School of Medicine, Tel Aviv University, Ramat Aviv, P.O. Box 39040, Tel Aviv 6997801, Israel; (G.B.); (J.H.A.); (L.K.)
| | - Joshua H. Arnold
- Sackler School of Medicine, Tel Aviv University, Ramat Aviv, P.O. Box 39040, Tel Aviv 6997801, Israel; (G.B.); (J.H.A.); (L.K.)
- Department of Medicine, University of Illinois at Chicago, 1853 W. Polk (MC 785), Chicago, IL 60612-7332, USA
| | - Zach Rozenbaum
- Department of Cardiology, Tel Aviv Sourasky Medical Center, 6 Weizman Street, Tel Aviv 6423906, Israel; (S.S.D.); (G.B.); (E.R.); (Y.A.); (Z.R.); (S.B.); (Y.T.)
- Sackler School of Medicine, Tel Aviv University, Ramat Aviv, P.O. Box 39040, Tel Aviv 6997801, Israel; (G.B.); (J.H.A.); (L.K.)
| | - Shmuel Banai
- Department of Cardiology, Tel Aviv Sourasky Medical Center, 6 Weizman Street, Tel Aviv 6423906, Israel; (S.S.D.); (G.B.); (E.R.); (Y.A.); (Z.R.); (S.B.); (Y.T.)
- Sackler School of Medicine, Tel Aviv University, Ramat Aviv, P.O. Box 39040, Tel Aviv 6997801, Israel; (G.B.); (J.H.A.); (L.K.)
| | - Yan Topilsky
- Department of Cardiology, Tel Aviv Sourasky Medical Center, 6 Weizman Street, Tel Aviv 6423906, Israel; (S.S.D.); (G.B.); (E.R.); (Y.A.); (Z.R.); (S.B.); (Y.T.)
- Sackler School of Medicine, Tel Aviv University, Ramat Aviv, P.O. Box 39040, Tel Aviv 6997801, Israel; (G.B.); (J.H.A.); (L.K.)
| | - Livia Kapusta
- Sackler School of Medicine, Tel Aviv University, Ramat Aviv, P.O. Box 39040, Tel Aviv 6997801, Israel; (G.B.); (J.H.A.); (L.K.)
- Pediatric Cardiology Unit, Tel Aviv Sourasky Medical Center, 6 Weizman Street, Tel Aviv 6423906, Israel
- Department of Pediatric Cardiology, Amalia Children’s Hospital, Radboud University Medical Centre, Greet Grooteplein Zuid 32, 6525 Nijmegen, The Netherlands
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Laufer-Perl M, Gvili M, Sirota Dorfman S, Baruch G, Rothschild E, Beer G, Arbel Y, Rozenbaum Z, Topilsky Y, Kapusta L. Right ventricle strain changes in patients with breast cancer during anthracycline therapy. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.2855] [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: 11/12/2022] Open
Abstract
Abstract
Background
Cardiotoxicity has become a significant adverse effect of cancer therapy, with Anthracyclines (ANT) in particular. There is a crucial need for the early subclinical detection of cardiotoxic effect. We aimed to evaluate Right ventricle (RV) two-dimensional speckle tracking echocardiography (2D-STE) changes during ANT therapy and to assess the correlation between RV 2D-STE and the routine echocardiographic RV parameters.
Methods
Data were prospectively collected as part of the Israel Cardio-Oncology Registry (ICOR). All female patients with breast cancer, planned for ANT therapy were included. All patients underwent serial echocardiography exams including baseline RV 2D-STE (before chemotherapy, T1) and shortly after the completion of ANT therapy (T3). RV 2D-STE was evaluated using the apical 4 chamber (4C) RV-focused view, assessing both the combined RV free wall and inter-ventricular septum (RV GLS) and solely the RV free wall strain (RV FWLS). Significant reduction in both RV GLS and RV FWLS was determined by either a relative reduction of >10% or an absolute value of >−25% for RV GLS and >−29% for RV FWLS.
Results
From September 2016 to June 2019, 40 patients were evaluated with a mean Doxorubicin (type of ANT) dose of 238.5±9.4 mg/m2. RV FWLS showed significant correlation to Tricuspid annular plane systolic excursion. At T3, significant reduction in both RV GLS and RV FWLS was observed among 77% and 62% of the patients with a mean RV GLS and RV FWLS reduction from −26.8 (±4.7) % to −21.5 (±4.4) % and −28.9 (±5.1) % to −25.6 (±5.9) % (p<0.001, p=0.002), respectively. Left ventricle (LV) ejection fraction and LV GLS were within the normal range.
Conclusions
RV GLS and RV FWLS reduction are frequent and occur early in the course of ANT therapy, preceding LV dysfunction, which may imply for the role of RV 2D-STE in the detection of early cardiotoxicity.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- M Laufer-Perl
- Tel Aviv Sourasky Medical Center, Cardiology, Tel Aviv, Israel
| | - M Gvili
- Tel Aviv Sourasky Medical Center, Cardiology, Tel Aviv, Israel
| | | | - G Baruch
- Ben Gurion University of the Negev, Beer Sheva, Israel
| | - E Rothschild
- Ben Gurion University of the Negev, Beer Sheva, Israel
| | - G Beer
- Tel Aviv Sourasky Medical Center, Cardiology, Tel Aviv, Israel
| | - Y Arbel
- Tel Aviv Sourasky Medical Center, Cardiology, Tel Aviv, Israel
| | - Z Rozenbaum
- Tel Aviv Sourasky Medical Center, Cardiology, Tel Aviv, Israel
| | - Y Topilsky
- Tel Aviv Sourasky Medical Center, Cardiology, Tel Aviv, Israel
| | - L Kapusta
- Tel Aviv Sourasky Medical Center, Cardiology, Tel Aviv, Israel
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9
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Baruch G, Rothschild E, Sadon S, Szekely Y, Lichter Y, Kaplan A, Taieb P, Banai A, Hochstadt A, Merdler I, Arbel Y, Laufer-Perl M, Beer G, Kapusta L, Topilsky Y. Evolution of right and left ventricle routine and speckle-tracking echocardiography in patients recovering from coronavirus disease 2019: a longitudinal study. Eur Heart J Cardiovasc Imaging 2021; 23:1055-1065. [PMID: 34542601 PMCID: PMC8500022 DOI: 10.1093/ehjci/jeab190] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [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: 06/10/2021] [Accepted: 09/04/2021] [Indexed: 12/12/2022] Open
Abstract
Aims We aim to assess changes in routine echocardiographic and longitudinal strain parameters in patients recovering from Coronavirus disease 2019 during hospitalization and at 3-month follow-up. Methods and results Routine comprehensive echocardiography and STE of both ventricles were performed during hospitalization for acute coronavirus disease 2019 (COVID-19) infection as part of a prospective pre-designed protocol and compared with echocardiography performed ∼3 months after recovery in 80 patients, using a similar protocol. Significantly improved right ventricle (RV) fractional area change, longer pulmonary acceleration time, lower right atrial pressure, and smaller RV end-diastolic and end-systolic area were observed at the recovery assessment (P < 0.05 for all). RV global longitudinal strain improved at the follow-up evaluation (23.2 ± 5 vs. 21.7 ± 4, P = 0.03), mostly due to improvement in septal segments. Only eight (10%) patients recovering from COVID-19 infection had abnormal ejection fraction (EF) at follow-up. However, LV related routine (E, E/e′, stroke volume, LV size), or STE parameters did not change significantly from the assessment during hospitalization. A significant proportion [36 (45%)] of patients had some deterioration of longitudinal strain at follow-up, and 20 patients (25%) still had abnormal LV STE ∼3 months after COVID-19 acute infection. Conclusion In patients previously discharged from hospitalization due to COVID-19 infection, RV routine echocardiographic and RV STE parameters improve significantly concurrently with improved RV haemodynamics. In contrast, a quarter of patients still have LV systolic dysfunction based on STE cut-offs. Moreover, LV STE does not improve significantly, implying subclinical LV dysfunction may be part and parcel of recovering from COVID-19 infection.
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Affiliation(s)
- Guy Baruch
- Department of Cardiology, Tel Aviv Sourasky Medical Center and Sackler School of Medicine, Tel Aviv University, Weizmann 6, Tel Aviv 6423919, Israel.,Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Ehud Rothschild
- Department of Cardiology, Tel Aviv Sourasky Medical Center and Sackler School of Medicine, Tel Aviv University, Weizmann 6, Tel Aviv 6423919, Israel.,Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Sapir Sadon
- Department of Cardiology, Tel Aviv Sourasky Medical Center and Sackler School of Medicine, Tel Aviv University, Weizmann 6, Tel Aviv 6423919, Israel
| | - Yishay Szekely
- Department of Cardiology, Tel Aviv Sourasky Medical Center and Sackler School of Medicine, Tel Aviv University, Weizmann 6, Tel Aviv 6423919, Israel
| | - Yael Lichter
- Department of Intensive Care, Tel Aviv Sourasky Medical Center and Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Alon Kaplan
- Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Philippe Taieb
- Department of Cardiology, Tel Aviv Sourasky Medical Center and Sackler School of Medicine, Tel Aviv University, Weizmann 6, Tel Aviv 6423919, Israel
| | - Ariel Banai
- Department of Cardiology, Tel Aviv Sourasky Medical Center and Sackler School of Medicine, Tel Aviv University, Weizmann 6, Tel Aviv 6423919, Israel
| | - Aviram Hochstadt
- Department of Cardiology, Tel Aviv Sourasky Medical Center and Sackler School of Medicine, Tel Aviv University, Weizmann 6, Tel Aviv 6423919, Israel
| | - Ilan Merdler
- Department of Cardiology, Tel Aviv Sourasky Medical Center and Sackler School of Medicine, Tel Aviv University, Weizmann 6, Tel Aviv 6423919, Israel
| | - Yaron Arbel
- Department of Cardiology, Tel Aviv Sourasky Medical Center and Sackler School of Medicine, Tel Aviv University, Weizmann 6, Tel Aviv 6423919, Israel
| | - Michal Laufer-Perl
- Department of Cardiology, Tel Aviv Sourasky Medical Center and Sackler School of Medicine, Tel Aviv University, Weizmann 6, Tel Aviv 6423919, Israel
| | - Gil Beer
- Department of Paediatrics, Paediatric Cardiology Unit, Tel Aviv Sourasky Medical Centre and Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Livia Kapusta
- Department of Paediatrics, Paediatric Cardiology Unit, Tel Aviv Sourasky Medical Centre and Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel.,Department of Paediatric Cardiology, Amalia Children's Hospital, Radboud University Medical Centre, Nijmegen, The Netherlands
| | - Yan Topilsky
- Department of Cardiology, Tel Aviv Sourasky Medical Center and Sackler School of Medicine, Tel Aviv University, Weizmann 6, Tel Aviv 6423919, Israel
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10
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Laufer-Perl M, Arias O, Dorfman SS, Baruch G, Rothschild E, Beer G, Hasson SP, Arbel Y, Rozenbaum Z, Topilsky Y, Kapusta L. Left Atrial Strain changes in patients with breast cancer during anthracycline therapy. Int J Cardiol 2021; 330:238-244. [PMID: 33581179 DOI: 10.1016/j.ijcard.2021.02.013] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Revised: 01/25/2021] [Accepted: 02/04/2021] [Indexed: 12/28/2022]
Abstract
BACKGROUND Cardiotoxicity has become a significant adverse effect of cancer therapy, with Anthracyclines (ANT) in particular. There is a crucial need for new imaging techniques for the early subclinical detection of cardiotoxic effect. We aimed to evaluate left atrial strain (LAS) changes during ANT therapy and to assess the correlation between LAS and the routine echocardiographic diastolic parameters. METHODS AND RESULTS Data were prospectively collected as part of the Israel Cardio-Oncology Registry (ICOR). All female patients with breast cancer, planned for ANT therapy were included. All patients underwent serial echocardiography exams including baseline LAS (before chemotherapy, T1) and shortly after the completion of ANT therapy (T3). LAS was assessed in 3 phases: Reservoir (LASr), Conduit (LASc) and Pump (LASp). Significant reduction in LASr was determined by either a relative reduction of >10% or an absolute value of <35%. From September 2016 to June 2019, 40 patients were evaluated with a mean Doxorubicin (type of ANT) dose of 237±13.24mg/m2. At T3, significant reduction in LASr was observed among 50% of the patients with a mean LASr reduction from 40.15 ± 6.83% to 36.04 ± 7.73% (p < 0.001). LASc showed significant reduction as well (p < 0.004) as opposed to LASp (p=0.076). Both LASr and LASc showed significant correlation to the routine diastolic parameters. CONCLUSIONS LASr and LASc reduction are frequent and occur early in the course of ANT therapy, showing significant correlation to the routine echocardiographic diastolic parameters, which may imply a role in the detection of early cardiotoxicity.
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Affiliation(s)
- Michal Laufer-Perl
- Department of Cardiology, Tel-Aviv Sourasky Medical Center, Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel; Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel.
| | - Orly Arias
- Department of Internal medicine B, Tel-Aviv Sourasky Medical Center, Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel; Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Svetlana Sirota Dorfman
- Department of Cardiology, Tel-Aviv Sourasky Medical Center, Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel; Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Guy Baruch
- Department of Cardiology, Tel-Aviv Sourasky Medical Center, Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel; Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Ehud Rothschild
- Department of Cardiology, Tel-Aviv Sourasky Medical Center, Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel; Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Gil Beer
- Pediatric Cardiology Unit, Tel-Aviv Sourasky Medical Center, Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel; Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Shira Peleg Hasson
- Department of Oncology, Tel-Aviv Sourasky Medical Center, Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel; Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Yaron Arbel
- Department of Cardiology, Tel-Aviv Sourasky Medical Center, Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel; Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Zach Rozenbaum
- Department of Cardiology, Tel-Aviv Sourasky Medical Center, Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel; Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Yan Topilsky
- Department of Cardiology, Tel-Aviv Sourasky Medical Center, Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel; Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Livia Kapusta
- Pediatric Cardiology Unit, Tel-Aviv Sourasky Medical Center, Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel; Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel; Department of Pediatrics Cardiology, Amalia Children's Hospital, Radboud University Medical Centre, Nijmegen, The Netherlands
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11
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Rothschild E, Baruch G, Szekely Y, Lichter Y, Kaplan A, Taieb P, Laufer-Perl M, Beer G, Kapusta L, Topilsky Y. The Predictive Role of Left and Right Ventricular Speckle-Tracking Echocardiography in COVID-19. JACC Cardiovasc Imaging 2020; 13:2471-2474. [PMID: 33011117 PMCID: PMC7434478 DOI: 10.1016/j.jcmg.2020.07.026] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Accepted: 07/10/2020] [Indexed: 11/16/2022]
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12
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Fridman E, Mangel L, Mandel D, Beer G, Kapusta L, Marom R. Effects of maternal aspirin treatment on hemodynamically significant patent ductus arteriosus in preterm infants - pilot study. J Matern Fetal Neonatal Med 2020; 35:958-963. [PMID: 32138560 DOI: 10.1080/14767058.2020.1736028] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Aim: To assess the burden of hemodynamically significant patent ductus arteriosus (hs-PDA) in preterm infants exposed to aspirin in utero.Methods: We retrospectively reviewed the medical records of 21 preterm infants <34 weeks whose mothers were treated with aspirin during gestation, and were screened for patent ductus arteriosus due to severe respiratory distress syndrome and the need for positive pressure ventilation. These infants were compared to 42 preterm infants born without exposure to aspirin in utero.Results: We found significantly lower frequency of hs-PDA and higher rate of successful pharmacological PDA closure after single course of ibuprofen treatment along with significantly lower cumulative doses of ibuprofen in the study group. Furthermore, PDA closure was achieved significantly earlier in the study group (day 4 versus 11, p = .02).Conclusion: Aspirin treatment during pregnancy seemed to reduce the incidence of hs-PDA in preterm infant and to increase infant responsiveness to postnatal medical treatment of PDA.
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Affiliation(s)
- Elena Fridman
- Department of Neonatology, Assuta Medical Center, Ashdod, Israel.,Be'er Sheva School of Medicine, Ben Gurion University of the Negev, Beersheba, Israel
| | - Laurence Mangel
- Department of Neonatology, Lis Maternity Hospital, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - Dror Mandel
- Department of Neonatology, Lis Maternity Hospital, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Gil Beer
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.,Pediatric Cardiology Unit, Dana-Dwek Children Hospital, Tel Aviv Sourasky Medical Centre, Tel Aviv, Israel
| | - Livia Kapusta
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.,Pediatric Cardiology Unit, Dana-Dwek Children Hospital, Tel Aviv Sourasky Medical Centre, Tel Aviv, Israel.,Department of Pediatric Cardiology, Radboud University Medical Centre, Amalia Children's Hospital, Nijmegen, The Netherlands
| | - Ronella Marom
- Department of Neonatology, Lis Maternity Hospital, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
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13
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Kariv R, Caspi M, Fliss-Isakov N, Shorer Y, Shor Y, Rosner G, Brazowski E, Beer G, Cohen S, Rosin-Arbesfeld R. Resorting the function of the colorectal cancer gatekeeper adenomatous polyposis coli. Int J Cancer 2019; 146:1064-1074. [PMID: 31283021 DOI: 10.1002/ijc.32557] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2019] [Accepted: 07/01/2019] [Indexed: 01/13/2023]
Abstract
As a large number of cancers are caused by nonsense mutations in key genes, read-through of these mutations to restore full-length protein expression is a potential therapeutic strategy. Mutations in the adenomatous polyposis coli (APC) gene initiate the majority of both sporadic and hereditary colorectal cancers (CRC) and around 30% of these mutations are nonsense mutations. Our goal was to test the feasibility and effectiveness of APC nonsense mutation read-through as a potential chemo-preventive therapy in Familial Adenomatous Polyposis (FAP), an inherited CRC syndrome patients. Ten FAP patients harboring APC nonsense mutations were treated with the read-through inducing antibiotic erythromycin for 4 months. Endoscopic assessment of the adenomas was performed at baseline, after 4 and after 12 months. Adenoma burden was documented in terms of adenoma number, maximal polyp size and cumulative polyp size per procedure. Tissue samples were collected and subjected to molecular and genetic analyses. Our results show that in the majority of patients the treatment led to a decrease in cumulative adenoma burden, median reduction in cumulative adenoma size and median reduction in adenoma number. Molecular and genetic analyses of the adenomas revealed that the treatment led to a reduced number of somatic APC mutations, reduced cellular proliferation and restoration of APC tumor-suppressing activity. Together, our findings show that induced read-through of APC nonsense mutations leads to promising clinical results and should be further investigated to establish its therapeutic potential in FAP and sporadic CRCs harboring nonsense APC mutations.
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Affiliation(s)
- Revital Kariv
- Department of Gastroenterology, Tel Aviv Medical Center, Tel Aviv, Israel.,Department of Clinical Microbiology and Immunology, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Michal Caspi
- Department of Clinical Microbiology and Immunology, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Naomi Fliss-Isakov
- Department of Gastroenterology, Tel Aviv Medical Center, Tel Aviv, Israel
| | - Yamit Shorer
- Department of Clinical Microbiology and Immunology, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Yarden Shor
- Department of Clinical Microbiology and Immunology, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Guy Rosner
- Department of Gastroenterology, Tel Aviv Medical Center, Tel Aviv, Israel.,Department of Clinical Microbiology and Immunology, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Eli Brazowski
- Department of Clinical Microbiology and Immunology, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.,Department of Pathology, Tel Aviv Medical Center, Tel Aviv, Israel
| | - Gil Beer
- Department of Clinical Microbiology and Immunology, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.,Tel Aviv Sourasky Medical Center, Pediatric Cardiology Unit, "Dana-Dwek" Children's Hospital, Tel Aviv, Israel
| | - Shlomi Cohen
- Department of Clinical Microbiology and Immunology, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.,Tel Aviv Sourasky Medical Center, Pediatric Cardiology Unit, "Dana-Dwek" Children's Hospital, Tel Aviv, Israel
| | - Rina Rosin-Arbesfeld
- Department of Clinical Microbiology and Immunology, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
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14
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Alsaaod M, Huber S, Beer G, Kohler P, Schüpbach-Regula G, Steiner A. Locomotion characteristics of dairy cows walking on pasture and the effect of artificial flooring systems on locomotion comfort. J Dairy Sci 2017; 100:8330-8337. [DOI: 10.3168/jds.2017-12760] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2017] [Accepted: 06/03/2017] [Indexed: 11/19/2022]
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15
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Bayramian AJ, Armstrong JP, Beer G, Campbell R, Cross R, Erlandson A, Freitas B, Menapace J, Molander W, Perkins LJ, Schaffers K, Siders C, Sutton S, Tassano J, Telford S, Ebbers CA, Caird J, Barty C. High Average Power Petawatt Laser Pumped by the Mercury Laser for Fusion Materials Engineering. Fusion Science and Technology 2017. [DOI: 10.13182/fst18-p2.34] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- A. J. Bayramian
- Lawrence Livermore National Laboratory, 7000 East Ave., Livermore, CA 94551
| | - J. P. Armstrong
- Lawrence Livermore National Laboratory, 7000 East Ave., Livermore, CA 94551
| | - G. Beer
- Lawrence Livermore National Laboratory, 7000 East Ave., Livermore, CA 94551
| | - R. Campbell
- Lawrence Livermore National Laboratory, 7000 East Ave., Livermore, CA 94551
| | - R. Cross
- Lawrence Livermore National Laboratory, 7000 East Ave., Livermore, CA 94551
| | - A. Erlandson
- Lawrence Livermore National Laboratory, 7000 East Ave., Livermore, CA 94551
| | - B. Freitas
- Lawrence Livermore National Laboratory, 7000 East Ave., Livermore, CA 94551
| | - J. Menapace
- Lawrence Livermore National Laboratory, 7000 East Ave., Livermore, CA 94551
| | - W. Molander
- Lawrence Livermore National Laboratory, 7000 East Ave., Livermore, CA 94551
| | - L. J. Perkins
- Lawrence Livermore National Laboratory, 7000 East Ave., Livermore, CA 94551
| | - K. Schaffers
- Lawrence Livermore National Laboratory, 7000 East Ave., Livermore, CA 94551
| | - C. Siders
- Lawrence Livermore National Laboratory, 7000 East Ave., Livermore, CA 94551
| | - S. Sutton
- Lawrence Livermore National Laboratory, 7000 East Ave., Livermore, CA 94551
| | - J. Tassano
- Lawrence Livermore National Laboratory, 7000 East Ave., Livermore, CA 94551
| | - S. Telford
- Lawrence Livermore National Laboratory, 7000 East Ave., Livermore, CA 94551
| | - C. A. Ebbers
- Lawrence Livermore National Laboratory, 7000 East Ave., Livermore, CA 94551
| | - J. Caird
- Lawrence Livermore National Laboratory, 7000 East Ave., Livermore, CA 94551
| | - C.P.J. Barty
- Lawrence Livermore National Laboratory, 7000 East Ave., Livermore, CA 94551
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16
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Pourier MS, Mavinkurve-Groothuis AMC, Loonen J, Bökkerink JPM, Roeleveld N, Beer G, Bellersen L, Kapusta L. Is screening for abnormal ECG patterns justified in long-term follow-up of childhood cancer survivors treated with anthracyclines? Pediatr Blood Cancer 2017; 64. [PMID: 27654133 DOI: 10.1002/pbc.26243] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/17/2016] [Revised: 07/22/2016] [Accepted: 08/10/2016] [Indexed: 12/17/2022]
Abstract
BACKGROUND ECG and echocardiography are noninvasive screening tools to detect subclinical cardiotoxicity in childhood cancer survivors (CCSs). Our aims were as follows: (1) assess the prevalence of abnormal ECG patterns, (2) determine the agreement between abnormal ECG patterns and echocardiographic abnormalities; and (3) determine whether ECG screening for subclinical cardiotoxicity in CCSs is justified. PROCEDURE We retrospectively studied ECG and echocardiography in asymptomatic CCSs more than 5 years after anthracycline treatment. Exclusion criteria were abnormal ECG and/or echocardiogram at the start of therapy, incomplete follow-up data, clinical heart failure, cardiac medication, and congenital heart disease. ECG abnormalities were classified using the Minnesota Code. Level of agreement between ECG and echocardiography was calculated with Cohen kappa. RESULTS We included 340 survivors with a mean follow-up of 14.5 years (range 5-32). ECG was abnormal in 73 survivors (21.5%), with ventricular conduction disorders, sinus bradycardia, and high-amplitude R waves being most common. Prolonged QTc (>0.45 msec) was found in two survivors, both with a cumulative anthracycline dose of 300 mg/m2 or higher. Echocardiography showed abnormalities in 44 survivors (12.9%), mostly mild valvular abnormalities. The level of agreement between ECG and echocardiography was low (kappa 0.09). Male survivors more often had an abnormal ECG (corrected odds ratio: 3.00, 95% confidence interval: 1.68-5.37). CONCLUSIONS Abnormal ECG patterns were present in 21% of asymptomatic long-term CCSs. Lack of agreement between abnormal ECG patterns and echocardiographic abnormalities may suggest that ECG is valuable in long-term follow-up of CCSs. However, it is not clear whether these abnormal ECG patterns will be clinically relevant.
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Affiliation(s)
- Milanthy S Pourier
- Department of Pediatric Hematology and Oncology, Radboud University Medical Center, Amalia Children's Hospital, Nijmegen, The Netherlands
| | | | - Jacqueline Loonen
- Department of Pediatric Hematology and Oncology, Radboud University Medical Center, Amalia Children's Hospital, Nijmegen, The Netherlands
| | - Jos P M Bökkerink
- Department of Pediatric Hematology and Oncology, Radboud University Medical Center, Amalia Children's Hospital, Nijmegen, The Netherlands
| | - Nel Roeleveld
- Department for Health Evidence, Radboud University Medical Center, Nijmegen, The Netherlands.,Department of Pediatrics, Radboud University Medical Center, Amalia Children's Hospital, Nijmegen, The Netherlands
| | - Gil Beer
- Pediatric Cardiology Unit, Tel Aviv University, Tel-Aviv Sourasky Medical Centre, Tel Aviv, Israel
| | - Louise Bellersen
- Department of Cardiology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Livia Kapusta
- Pediatric Cardiology Unit, Tel Aviv University, Tel-Aviv Sourasky Medical Centre, Tel Aviv, Israel.,Children's Heart Centre, Radboud University Medical Center, Amalia Children's Hospital, Nijmegen, The Netherlands
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17
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Shi H, Bazzi M, Beer G, Bellotti G, Berucci C, Bragadireanu A, Bosnar D, Cargnelli M, Curceanu C, Butt A, d’Uffizi A, Fiorini C, Ghio F, Guaraldo C, Hayano R, Iliescu M, Ishiwatari T, Iwasaki M, Levi Sandri P, Marton J, Okada S, Pietreanu D, Piscicchia K, Romero Vidal A, Sbardella E, Scordo A, Sirghi D, Sirghi F, Tatsuno H, Vazquez Doce O, Widmann E, Zmeskal J. Precision X-ray spectroscopy of kaonic atoms as a probe of low-energy kaon-nucleus interaction. EPJ Web Conf 2016. [DOI: 10.1051/epjconf/201612604045] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [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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18
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Kohler P, Alsaaod M, Dolf G, O'Brien R, Beer G, Steiner A. A single prolonged milking interval of 24h compromises the well-being and health of dairy Holstein cows. J Dairy Sci 2016; 99:9080-9093. [PMID: 27592425 DOI: 10.3168/jds.2015-10839] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2015] [Accepted: 07/16/2016] [Indexed: 12/16/2022]
Abstract
Cows are often shown at dairy shows with overfilled udders to achieve a better show placing. However, it is unclear to what degree "over-bagging" affects the health and well-being of show cows. The goal of this study was to assess the effect of a single prolonged milking interval (PMI) of 24h on the measurable signs of health and well-being in dairy cows in early and mid-lactation and to assess the effect of a nonsteroidal anti-inflammatory drug (NSAID) on well-being during a PMI. Fifteen Holstein cows were studied in early lactation (89.5±2.7d in milk) and were given an NSAID or physiological saline in a crossover design. Ten cows were studied again in mid-lactation (151.6±4.0d in milk). Data on clinical signs of cows' health, behavior, and well-being were collected at 1 or 2h intervals before and during a PMI of 24h. Data from the last 6h of a 12h milking interval were compared with the last 6h of the PMI. Compared with that of a cow in the last 6h of a 12-h milking interval, the behavior of cows in early lactation (saline group) changed during the last 6h of the PMI: we observed decreased eating time (22.4 vs. 16.2min/h), increased ruminating time (13.3 vs. 25.0min/h), and increased hind limb abduction while walking (score 41.7 vs. 62.6) and standing (31.2 vs. 38.9cm). Udder firmness was increased (2.9 vs. 4.5kg) during this period and more weight was placed on the hind limbs (46.4 vs. 47.0%). We also found pathological signs at the end of the PMI: all cows showed milk leaking, and 10 of 15 cows developed edema in the subcutaneous udder tissue. Somatic cell count was significantly increased from 12h to 72h after the PMI. Administration of an NSAID had no influence on measured variables, except that the occurrence of edema was not significantly increased during PMI in the flunixin group (10 of 15 and 6 of 15 cows for the saline and flunixin groups, respectively). In the cows in mid-lactation, different variables were not significantly changed in the PMI compared with baseline values (e.g., eating and ruminating time, occurrence of edema, and abduction). We conclude that the cows' health and well-being were compromised by a single PMI of 24h, because their behavior changed and pathological signs were recorded. Administration of an NSAID had a slight effect on cows' well-being during a PMI. The stage of lactation had more effect on the cows' health and well-being, because fewer variables were changed in mid-lactation.
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Affiliation(s)
- P Kohler
- Clinic for Ruminants, University of Bern, 3001 Bern, Switzerland.
| | - M Alsaaod
- Clinic for Ruminants, University of Bern, 3001 Bern, Switzerland
| | - G Dolf
- Institute of Genetics, Vetsuisse-Faculty, University of Bern, 3001 Bern, Switzerland
| | - R O'Brien
- Department of Veterinary Clinical Medicine, College of Veterinary Medicine, University of Illinois, Urbana 61820
| | - G Beer
- Clinic for Ruminants, University of Bern, 3001 Bern, Switzerland
| | - A Steiner
- Clinic for Ruminants, University of Bern, 3001 Bern, Switzerland
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Affiliation(s)
- H. Romanoff
- Department of Vascular Surgery, Hadassah Hebrew University Medical School, Jerusalem, Israel
| | - G. Beer
- Department of Vascular Surgery, Hadassah Hebrew University Medical School, Jerusalem, Israel
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Tatsuno H, Bazzi M, Beer G, Bellotti G, Berucci C, Bragadireanu A, Bosnar D, Cargnelli M, Curceanu C, Butt A, d’Uffizi A, Fiorini C, Ghio F, Guaraldo C, Hayano R, Iliescu M, Ishiwatari T, Iwasaki M, Levi Sandri P, Marton J, Okada S, Pietreanu D, Piscicchia K, Romero Vidal A, Sbardella E, Scordo A, Shi H, Sirghi D, Sirghi F, Vazquez Doce O, Widmann E, Zmeskal J. Future projects of light kaonic atom X-ray spectroscopy. EPJ Web Conf 2016. [DOI: 10.1051/epjconf/201613001018] [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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Marton J, Bazzi M, Beer G, Berucci C, Bosnar D, Bragadireanu A, Cargnelli M, Clozza A, Curceanu C, d’Uffizi A, Fiorini C, Ghio F, Guaraldo C, Hayano R, Iliescu M, Ishiwatari T, Iwasaki M, Sandri PL, Okada S, Pietreanu D, Piscicchia K, Ponta T, Quaglia R, Vidal AR, Sbardella E, Scordo A, Shi H, Sirghi D, Sirghi F, Tatsuno H, Doce OV, Widmann E, Zmeskal J. Strong interaction studies with kaonic atoms. EPJ Web of Conferences 2016. [DOI: 10.1051/epjconf/201611303009] [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: 11/14/2022] Open
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Shaw M, Crisp E, Beer G, Pugh L, Pamballi J, Wong SYS. 42COMMUNICATION OF DNACPR DECISIONS - ARE WE COMPLIANT WITH THE LAW?:. Age Ageing 2015. [DOI: 10.1093/ageing/afv106.42] [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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Alsaaod M, Niederhauser J, Beer G, Zehner N, Schuepbach-Regula G, Steiner A. Development and validation of a novel pedometer algorithm to quantify extended characteristics of the locomotor behavior of dairy cows. J Dairy Sci 2015; 98:6236-42. [DOI: 10.3168/jds.2015-9657] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2015] [Accepted: 05/28/2015] [Indexed: 11/19/2022]
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Hashimoto T, Ajimura S, Beer G, Bhang H, Bragadireanu M, Buehler P, Busso L, Cargnelli M, Choi S, Curceanu C, Enomoto S, Faso D, Fujioka H, Fujiwara Y, Fukuda T, Guaraldo C, Hayano RS, Hiraiwa T, Iio M, Iliescu M, Inoue K, Ishiguro Y, Ishikawa T, Ishimoto S, Ishiwatari T, Itahashi K, Iwai M, Iwasaki M, Kato Y, Kawasaki S, Kienle P, Kou H, Ma Y, Marton J, Matsuda Y, Mizoi Y, Morra O, Nagae T, Noumi H, Ohnishi H, Okada S, Outa H, Piscicchia K, Poli Lener M, Romero Vida A, Sada Y, Sakaguchi A, Sakuma F, Sato M, Scordo A, Sekimoto M, Shi H, Sirghi D, Sirghi F, Suzuki K, Suzuki S, Suzuki T, Tanida K, Tatsuno H, Tokuda M, Tomono D, Toyoda A, Tsukada K, Vazquez Doce O, Widmann E, Wuenschek BK, Yamaga T, Yamazaki T, Yim H, Zhang Q, Zmeska J. A search for the K−ppbound state in the 3He( K−in-flight, n) reaction at J-PARC. EPJ Web of Conferences 2014. [DOI: 10.1051/epjconf/20146609008] [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: 11/14/2022] Open
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Ishiwatari T, Bazzi M, Beer G, Berucci C, Bombelli L, Bragadireanu A, Cargnelli M, Curceanu C, d’Uffizi A, Fiorini C, Ghio F, Guaraldo C, Hayano R, Iliescu M, Iwasaki M, Kienle P, Levi Sandri P, Longoni A, Marton J, Okada S, Pietreanu D, Ponta T, Quaglia R, Romero Vidal A, Sbardella E, Scordo A, Shi H, Sirghi D, Sirghi F, Tatsuno H, Tudorache A, Tudorache V, Vazquez Doce O, Wünschek B, Widmann E, Zmeskal J. New precision era of experiments on strong interaction with strangeness at DAFNE/LNF-INFN. EPJ Web of Conferences 2014. [DOI: 10.1051/epjconf/20146605016] [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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Sada Y, Ajimura S, Beer G, Bhang H, Bragadireanu M, Buehler P, Busso L, Cargnelli M, Choi S, Curceanu C, Enomoto S, Faso D, Fujioka H, Fujiwara Y, Fukuda T, Guaraldo C, Hashimoto T, Hayano RS, Hiraiwa T, Iio M, Iliescu M, Inoue K, Ishiguro Y, Ishikawa T, Ishimoto S, Ishiwatari T, Itahashi K, Iwai M, Iwasaki M, Kato Y, Kawasaki S, Kienle P, Kou H, Ma Y, Marton J, Matsuda Y, Mizoi Y, Morra O, Nagae T, Noumi H, Ohnishi H, Okada S, Outa H, Piscicchia K, Poli Lener M, Romero Vidal A, Sakaguchi A, Sakuma F, Sato M, Scordo A, Sekimoto M, Shi H, Sirghi D, Sirghi F, Suzuki K, Suzuki S, Suzuki T, Tanida K, Tatsuno H, Tokuda M, Tomono D, Toyoda A, Tsukada K, Vazquez Doce O, Widmann E, Weunschek BK, Yamaga T, Yamazaki T, Yim H, Zhang Q, Zmeskal J. Search for the K−ppbound state via the in-flight 3He( K−, n) reaction. EPJ Web of Conferences 2014. [DOI: 10.1051/epjconf/20148102016] [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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Cargnelli M, Bazzi M, Beer G, Berucci C, Bragadireanu A, Curceanu C, d'Uffizi A, Fiorini C, Ghio F, Guaraldo C, Hayano R, Iliescu M, Ishiwatari T, Iwasaki M, Levi Sandri P, Marton J, Okada S, Pietreanu D, Ponta T, Quaglia R, Romero Vidal A, Sbardella E, Scordo A, Shi H, Sirghi D, Sirghi F, Tatsuno H, Vazquez Doce O, Widmann E, Wünschek B, Zmeskal J. X-ray spectroscopy of kaonic atoms at SIDDHARTA. EPJ Web of Conferences 2014. [DOI: 10.1051/epjconf/20147305008] [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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Shi H, Bazzi M, Beer G, Berucci C, Bragadireanu A, Cargnelli M, Curceanu C, d’Uffizi A, Fiorini C, Ghio F, Guaraldo C, Hayano R, Iliescu M, Ishiwatari T, Iwasaki M, Kienle P, Levi Sandri P, Marton J, Okada S, Pietreanu D, Piscicchia K, Ponta T, Quaglia R, Romero Vidal A, Sbardella E, Scordo A, Sirghi D, Sirghi F, Tatsuno H, Vazquez Doce O, Widmann E, Zmeskal J. The yield of kaonic hydrogen X-rays in the SIDDHARTA experiment. EPJ Web of Conferences 2014. [DOI: 10.1051/epjconf/20146609016] [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: 11/14/2022] Open
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Marton J, Bazzi M, Beer G, Berucci C, Bragadireanu A, Cargnelli M, Curceanu C, d’Uffizi A, Fiorini C, Ghio F, Guaraldo C, Hayano R, Iliescu M, Ishiwatari T, Iwasaki M, Levi Sandri P, Okada S, Pietreanu D, Ponta T, Quaglia R, Romero Vidal A, Sbardella E, Scordo A, Shi H, Sirghi D, Sirghi F, Tatsuno H, Vazquez Doce O, Widmann E, Wünschek B, Zmeskal J. Kaonic atoms – studies of the strong interaction with strangeness. EPJ Web of Conferences 2014. [DOI: 10.1051/epjconf/20148101017] [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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Curceanu C, Bazzi M, Beer G, Berucci C, Bosnar D, Bragadireanu A, Cargnelli M, Clozza A, D’Uffizi A, Fabbietti L, Fiorini C, Ghio F, Guaraldo C, Hayano R, Iliescu M, Ishiwatari T, Iwasaki M, Levi Sandri P, Marton J, Okada S, Pietreanu D, Piscicchia K, Poli Lener M, Ponta T, Quaglia R, Romero Vidal A, Sbardella E, Scordo A, Shi H, Sirghi D, Sirghi F, Tatsuno H, Tucaković I, Vazquez Doce O, Widmann E, Zmeskal J. Unveiling the strangeness secrets: low-energy kaon-nucleon/nuclei interactions studies at DAΦNE. EPJ Web of Conferences 2014. [DOI: 10.1051/epjconf/20146609004] [Citation(s) in RCA: 2] [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: 11/14/2022] Open
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Ishiwatari T, Bazzi M, Beer G, Bombelli L, Bragadireanu AM, Cargnelli M, Curceanu Petrascu C, Dʼuffizi A, Fiorini C, Frizzi T, Ghio F, Guaraldo C, Hayano RS, Iliescu M, Iwasaki M, Kienle P, Levi Sandri P, Longoni A, Marton J, Okada S, Pietreanu D, Ponta T, Rizzo A, Romero Vidal A, Sbardella E, Scordo A, Shi H, Sirghi DL, Sirghi F, Tatsuno H, Tudorache A, Tudorache V, Vazquez Doce O, Widmann E, Wünschek B, Zmeskal J. Strong-interaction shifts and widths of kaonic helium isotopes. Nucl Phys A 2013; 914:305-309. [PMID: 24068854 PMCID: PMC3778894 DOI: 10.1016/j.nuclphysa.2012.12.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2012] [Revised: 11/27/2012] [Accepted: 12/07/2012] [Indexed: 06/02/2023]
Abstract
The kaonic 3He and 4He [Formula: see text] transitions in gaseous targets were observed by the SIDDHARTA experiment. The X-ray energies of these transitions were measured with large-area silicon-drift detectors using the timing information of the [Formula: see text] pairs produced by the DAΦNE [Formula: see text] collider. The strong-interaction shifts and widths both of the kaonic 3He and 4He 2p states were determined, which are much smaller than the results obtained by the previous experiments. The "kaonic helium puzzle" (a discrepancy between theory and experiment) was now resolved.
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Bazzi M, Beer G, Berucci C, Bombelli L, Bragadireanu A, Cargnelli M, Curceanu (Petrascu) C, dʼUffizi A, Fiorini C, Frizzi T, Ghio F, Guaraldo C, Hayano R, Iliescu M, Ishiwatari T, Iwasaki M, Kienle P, Levi Sandri P, Longoni A, Marton J, Okada S, Pietreanu D, Ponta T, Romero Vidal A, Sbardella E, Scordo A, Shi H, Sirghi D, Sirghi F, Tatsuno H, Tudorache A, Tudorache V, Vazquez Doce O, Widmann E, Zmeskal J. Preliminary study of kaonic deuterium X-rays by the SIDDHARTA experiment at DAΦNE. Nucl Phys A 2013; 907:69-77. [PMID: 23805024 PMCID: PMC3688359 DOI: 10.1016/j.nuclphysa.2013.03.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2013] [Revised: 02/27/2013] [Accepted: 03/01/2013] [Indexed: 05/28/2023]
Abstract
The study of the [Formula: see text] system at very low energies plays a key role for the understanding of the strong interaction between hadrons in the strangeness sector. At the DAΦNE electron-positron collider of Laboratori Nazionali di Frascati we studied kaonic atoms with [Formula: see text] and [Formula: see text], taking advantage of the low-energy charged kaons from Φ-mesons decaying nearly at rest. The SIDDHARTA experiment used X-ray spectroscopy of the kaonic atoms to determine the transition yields and the strong interaction induced shift and width of the lowest experimentally accessible level (1s for H and D and 2p for He). Shift and width are connected to the real and imaginary part of the scattering length. To disentangle the isospin dependent scattering lengths of the antikaon-nucleon interaction, measurements of [Formula: see text] and of [Formula: see text] are needed. We report here on an exploratory deuterium measurement, from which a limit for the yield of the K-series transitions was derived: [Formula: see text] and [Formula: see text] (CL 90%). Also, the upcoming SIDDHARTA-2 kaonic deuterium experiment is introduced.
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Affiliation(s)
- M. Bazzi
- INFN, Laboratori Nazionali di Frascati, C.P. 13, Via E. Fermi 40, I-00044 Frascati (Roma), Italy
| | - G. Beer
- Department of Physics and Astronomy, University of Victoria, P.O. Box 3055, Victoria BC V8W3P6, Canada
| | - C. Berucci
- INFN, Laboratori Nazionali di Frascati, C.P. 13, Via E. Fermi 40, I-00044 Frascati (Roma), Italy
- Stefan-Meyer-Institut für subatomare Physik, Boltzmanngasse 3, 1090 Wien, Austria
| | - L. Bombelli
- Politecnico di Milano, Dipartimento di Elettronica e Informazione, Piazza L. da Vinci 32, I-20133 Milano, Italy
| | - A.M. Bragadireanu
- INFN, Laboratori Nazionali di Frascati, C.P. 13, Via E. Fermi 40, I-00044 Frascati (Roma), Italy
- IFIN-HH, Institutul National pentru Fizica si Inginerie Nucleara Horia Hulubei, Reactorului 30, Magurele, Romania
| | - M. Cargnelli
- Stefan-Meyer-Institut für subatomare Physik, Boltzmanngasse 3, 1090 Wien, Austria
| | - C. Curceanu (Petrascu)
- INFN, Laboratori Nazionali di Frascati, C.P. 13, Via E. Fermi 40, I-00044 Frascati (Roma), Italy
| | - A. dʼUffizi
- INFN, Laboratori Nazionali di Frascati, C.P. 13, Via E. Fermi 40, I-00044 Frascati (Roma), Italy
| | - C. Fiorini
- Politecnico di Milano, Dipartimento di Elettronica e Informazione, Piazza L. da Vinci 32, I-20133 Milano, Italy
| | - T. Frizzi
- Politecnico di Milano, Dipartimento di Elettronica e Informazione, Piazza L. da Vinci 32, I-20133 Milano, Italy
| | - F. Ghio
- INFN Sezione di Roma I and Instituto Superiore di Sanita, I-00161 Roma, Italy
| | - C. Guaraldo
- INFN, Laboratori Nazionali di Frascati, C.P. 13, Via E. Fermi 40, I-00044 Frascati (Roma), Italy
| | - R. Hayano
- University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, Japan
| | - M. Iliescu
- INFN, Laboratori Nazionali di Frascati, C.P. 13, Via E. Fermi 40, I-00044 Frascati (Roma), Italy
| | - T. Ishiwatari
- Stefan-Meyer-Institut für subatomare Physik, Boltzmanngasse 3, 1090 Wien, Austria
| | - M. Iwasaki
- RIKEN, Institute of Physical and Chemical Research, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - P. Kienle
- Stefan-Meyer-Institut für subatomare Physik, Boltzmanngasse 3, 1090 Wien, Austria
- Excellence Cluster Universe, Technische Universität München, Boltzmannstraße 2, D-85748 Garching, Germany
| | - P. Levi Sandri
- INFN, Laboratori Nazionali di Frascati, C.P. 13, Via E. Fermi 40, I-00044 Frascati (Roma), Italy
| | - A. Longoni
- Politecnico di Milano, Dipartimento di Elettronica e Informazione, Piazza L. da Vinci 32, I-20133 Milano, Italy
| | - J. Marton
- Stefan-Meyer-Institut für subatomare Physik, Boltzmanngasse 3, 1090 Wien, Austria
| | - S. Okada
- RIKEN, Institute of Physical and Chemical Research, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - D. Pietreanu
- INFN, Laboratori Nazionali di Frascati, C.P. 13, Via E. Fermi 40, I-00044 Frascati (Roma), Italy
- IFIN-HH, Institutul National pentru Fizica si Inginerie Nucleara Horia Hulubei, Reactorului 30, Magurele, Romania
| | - T. Ponta
- IFIN-HH, Institutul National pentru Fizica si Inginerie Nucleara Horia Hulubei, Reactorului 30, Magurele, Romania
| | - A. Romero Vidal
- Universidade de Santiago de Compostela, Casas Reais 8, 15782 Santiago de Compostela, Spain
| | - E. Sbardella
- INFN, Laboratori Nazionali di Frascati, C.P. 13, Via E. Fermi 40, I-00044 Frascati (Roma), Italy
| | - A. Scordo
- INFN, Laboratori Nazionali di Frascati, C.P. 13, Via E. Fermi 40, I-00044 Frascati (Roma), Italy
| | - H. Shi
- University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, Japan
| | - D.L. Sirghi
- INFN, Laboratori Nazionali di Frascati, C.P. 13, Via E. Fermi 40, I-00044 Frascati (Roma), Italy
- IFIN-HH, Institutul National pentru Fizica si Inginerie Nucleara Horia Hulubei, Reactorului 30, Magurele, Romania
| | - F. Sirghi
- INFN, Laboratori Nazionali di Frascati, C.P. 13, Via E. Fermi 40, I-00044 Frascati (Roma), Italy
- IFIN-HH, Institutul National pentru Fizica si Inginerie Nucleara Horia Hulubei, Reactorului 30, Magurele, Romania
| | - H. Tatsuno
- INFN, Laboratori Nazionali di Frascati, C.P. 13, Via E. Fermi 40, I-00044 Frascati (Roma), Italy
| | - A. Tudorache
- IFIN-HH, Institutul National pentru Fizica si Inginerie Nucleara Horia Hulubei, Reactorului 30, Magurele, Romania
| | - V. Tudorache
- IFIN-HH, Institutul National pentru Fizica si Inginerie Nucleara Horia Hulubei, Reactorului 30, Magurele, Romania
| | - O. Vazquez Doce
- Excellence Cluster Universe, Technische Universität München, Boltzmannstraße 2, D-85748 Garching, Germany
| | - E. Widmann
- Stefan-Meyer-Institut für subatomare Physik, Boltzmanngasse 3, 1090 Wien, Austria
| | - J. Zmeskal
- Stefan-Meyer-Institut für subatomare Physik, Boltzmanngasse 3, 1090 Wien, Austria
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Rojek J, Karlis G, Malinowski L, Beer G. Setting up virgin stress conditions in discrete element models. Comput Geotech 2013; 48:228-248. [PMID: 27087731 PMCID: PMC4819035 DOI: 10.1016/j.compgeo.2012.07.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/20/2011] [Revised: 06/27/2012] [Accepted: 07/19/2012] [Indexed: 06/05/2023]
Abstract
In the present work, a methodology for setting up virgin stress conditions in discrete element models is proposed. The developed algorithm is applicable to discrete or coupled discrete/continuum modeling of underground excavation employing the discrete element method (DEM). Since the DEM works with contact forces rather than stresses there is a need for the conversion of pre-excavation stresses to contact forces for the DEM model. Different possibilities of setting up virgin stress conditions in the DEM model are reviewed and critically assessed. Finally, a new method to obtain a discrete element model with contact forces equivalent to given macroscopic virgin stresses is proposed. The test examples presented show that good results may be obtained regardless of the shape of the DEM domain.
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Affiliation(s)
- J. Rojek
- Institute of Fundamental Technological Research, Polish Academy of Sciences, Pawińskiego 5B, 02-106 Warsaw, Poland
| | - G.F. Karlis
- Institute for Structural Analysis, Graz University of Technology, Lessingstraße 25/II, 8010 Graz, Austria
| | - L.J. Malinowski
- Institute for Structural Analysis, Graz University of Technology, Lessingstraße 25/II, 8010 Graz, Austria
| | - G. Beer
- Institute for Structural Analysis, Graz University of Technology, Lessingstraße 25/II, 8010 Graz, Austria
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Bazzi M, Beer G, Bombelli L, Bragadireanu A, Cargnelli M, Curceanu (Petrascu) C, dʼUffizi A, Fiorini C, Frizzi T, Ghio F, Guaraldo C, Hayano R, Iliescu M, Ishiwatari T, Iwasaki M, Kienle P, Levi Sandri P, Longoni A, Marton J, Okada S, Pietreanu D, Ponta T, Rizzo A, Romero Vidal A, Sbardella E, Scordo A, Shi H, Sirghi D, Sirghi F, Tatsuno H, Tudorache A, Tudorache V, Vazquez Doce O, Wünschek B, Widmann E, Zmeskal J. Measurements of the strong-interaction widths of the kaonic (3)He and (4)He 2p levels. Phys Lett B 2012; 714:40-43. [PMID: 22876000 PMCID: PMC3405488 DOI: 10.1016/j.physletb.2012.06.071] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/04/2012] [Revised: 06/06/2012] [Accepted: 06/26/2012] [Indexed: 06/01/2023]
Abstract
The kaonic (3)He and (4)He X-rays emitted in the [Formula: see text] transitions were measured in the SIDDHARTA experiment. The widths of the kaonic (3)He and (4)He 2p states were determined to be [Formula: see text], and [Formula: see text], respectively. Both results are consistent with the theoretical predictions. The width of kaonic (4)He is much smaller than the value of [Formula: see text] determined by the experiments performed in the 70's and 80's, while the width of kaonic (3)He was determined for the first time.
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Affiliation(s)
| | - M. Bazzi
- INFN, Laboratori Nazionali di Frascati, Frascati (Roma), Italy
| | - G. Beer
- Dep. of Phys. and Astro., Univ. of Victoria, Victoria B.C., Canada
| | - L. Bombelli
- Politecnico di Milano, Sez. di Elettronica, Milano, Italy
| | - A.M. Bragadireanu
- INFN, Laboratori Nazionali di Frascati, Frascati (Roma), Italy
- IFIN-HH, Magurele, Bucharest, Romania
| | - M. Cargnelli
- Stefan-Meyer-Institut für subatomare Physik, Vienna, Austria
| | | | - A. dʼUffizi
- INFN, Laboratori Nazionali di Frascati, Frascati (Roma), Italy
| | - C. Fiorini
- Politecnico di Milano, Sez. di Elettronica, Milano, Italy
| | - T. Frizzi
- Politecnico di Milano, Sez. di Elettronica, Milano, Italy
| | - F. Ghio
- INFN Sez. di Roma I and Inst. Superiore di Sanita, Roma, Italy
| | - C. Guaraldo
- INFN, Laboratori Nazionali di Frascati, Frascati (Roma), Italy
| | | | - M. Iliescu
- INFN, Laboratori Nazionali di Frascati, Frascati (Roma), Italy
- IFIN-HH, Magurele, Bucharest, Romania
| | - T. Ishiwatari
- Stefan-Meyer-Institut für subatomare Physik, Vienna, Austria
| | - M. Iwasaki
- RIKEN, The Inst. of Phys. and Chem. Research, Saitama, Japan
| | - P. Kienle
- Stefan-Meyer-Institut für subatomare Physik, Vienna, Austria
- Excellence Cluster Universe, Tech. Univ. München, Garching, Germany
| | - P. Levi Sandri
- INFN, Laboratori Nazionali di Frascati, Frascati (Roma), Italy
| | - A. Longoni
- Politecnico di Milano, Sez. di Elettronica, Milano, Italy
| | - J. Marton
- Stefan-Meyer-Institut für subatomare Physik, Vienna, Austria
| | - S. Okada
- RIKEN, The Inst. of Phys. and Chem. Research, Saitama, Japan
| | - D. Pietreanu
- INFN, Laboratori Nazionali di Frascati, Frascati (Roma), Italy
- IFIN-HH, Magurele, Bucharest, Romania
| | - T. Ponta
- IFIN-HH, Magurele, Bucharest, Romania
| | - A. Rizzo
- INFN, Laboratori Nazionali di Frascati, Frascati (Roma), Italy
| | - A. Romero Vidal
- INFN, Laboratori Nazionali di Frascati, Frascati (Roma), Italy
| | - E. Sbardella
- INFN, Laboratori Nazionali di Frascati, Frascati (Roma), Italy
| | - A. Scordo
- INFN, Laboratori Nazionali di Frascati, Frascati (Roma), Italy
| | - H. Shi
- Univ. of Tokyo, Tokyo, Japan
| | - D.L. Sirghi
- INFN, Laboratori Nazionali di Frascati, Frascati (Roma), Italy
- IFIN-HH, Magurele, Bucharest, Romania
| | - F. Sirghi
- INFN, Laboratori Nazionali di Frascati, Frascati (Roma), Italy
- IFIN-HH, Magurele, Bucharest, Romania
| | - H. Tatsuno
- INFN, Laboratori Nazionali di Frascati, Frascati (Roma), Italy
| | | | | | - O. Vazquez Doce
- Excellence Cluster Universe, Tech. Univ. München, Garching, Germany
| | - B. Wünschek
- Stefan-Meyer-Institut für subatomare Physik, Vienna, Austria
| | - E. Widmann
- Stefan-Meyer-Institut für subatomare Physik, Vienna, Austria
| | - J. Zmeskal
- Stefan-Meyer-Institut für subatomare Physik, Vienna, Austria
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Tatsuno H, Bazzi M, Beer G, Bombelli L, Bragadireanu A, Cargnelli M, Curceanu (Petrascu) C, d’Uffizi A, Fiorini C, Frizzi T, Ghio F, Guaraldo C, Hayano R, Iliescu M, Ishiwatari T, Iwasaki M, Kienle P, Levi Sandri P, Longoni A, Marton J, Okada S, Pietreanu D, Ponta T, Rizzo A, Romero Vidal A, Sbardella E, Scordo A, Shi H, Sirghi D, Sirghi F, Tudorache A, Tudorache V, Vazquez Doce O, Widmann E, Wünschek B, Zmeskal J. Kaonic 3He and 4He measurements in the SIDDHARTA experiment at the DAΦNE collider. EPJ Web of Conferences 2012. [DOI: 10.1051/epjconf/20123702002] [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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37
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Bazzi M, Beer G, Bombelli L, Bragadireanu A, Cargnelli M, Corradi G, Curceanu (Petrascu) C, d'Uffizi A, Fiorini C, Frizzi T, Ghio F, Girolami B, Guaraldo C, Hayano R, Iliescu M, Ishiwatari T, Iwasaki M, Kienle P, Levi Sandri P, Longoni A, Marton J, Okada S, Pietreanu D, Ponta T, Rizzo A, Romero Vidal A, Scordo A, Shi H, Sirghi D, Sirghi F, Tatsuno H, Tudorache A, Tudorache V, Vazquez Doce O, Widmann E, Wünschek B, Zmeskal J. First measurement of kaonic helium-3 X-rays. Phys Lett B 2011; 697:199-202. [PMID: 21633519 PMCID: PMC3087507 DOI: 10.1016/j.physletb.2011.02.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2010] [Revised: 01/10/2011] [Accepted: 02/01/2011] [Indexed: 05/28/2023]
Abstract
The first observation of the kaonic (3)He 3d→2p transition was made, using slow K- mesons stopped in a gaseous (3)He target. The kaonic atom X-rays were detected with large-area silicon drift detectors using the timing information of the K+K- pairs of ϕ-meson decays produced by the DAΦNE e+e- collider. The strong interaction shift of the kaonic (3)He 2p state was determined to be -2±2(stat)±4(syst) eV.
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Affiliation(s)
| | - M. Bazzi
- INFN, Laboratori Nazionali di Frascati, Frascati (Roma), Italy
| | - G. Beer
- Dep. of Phys. and Astro., Univ. of Victoria, Victoria B.C., Canada
| | - L. Bombelli
- Politechno di Milano, Sez. di Elettronica, Milano, Italy
| | - A.M. Bragadireanu
- INFN, Laboratori Nazionali di Frascati, Frascati (Roma), Italy
- IFIN-HH, Magurele, Bucharest, Romania
| | - M. Cargnelli
- Stefan-Meyer-Institut für subatomare Physik, Vienna, Austria
| | - G. Corradi
- INFN, Laboratori Nazionali di Frascati, Frascati (Roma), Italy
| | | | - A. d'Uffizi
- INFN, Laboratori Nazionali di Frascati, Frascati (Roma), Italy
| | - C. Fiorini
- Politechno di Milano, Sez. di Elettronica, Milano, Italy
| | - T. Frizzi
- Politechno di Milano, Sez. di Elettronica, Milano, Italy
| | - F. Ghio
- INFN Sez. di Roma I and Inst. Superiore di Sanita, Roma, Italy
| | - B. Girolami
- INFN Sez. di Roma I and Inst. Superiore di Sanita, Roma, Italy
| | - C. Guaraldo
- INFN, Laboratori Nazionali di Frascati, Frascati (Roma), Italy
| | | | - M. Iliescu
- INFN, Laboratori Nazionali di Frascati, Frascati (Roma), Italy
- IFIN-HH, Magurele, Bucharest, Romania
| | - T. Ishiwatari
- Stefan-Meyer-Institut für subatomare Physik, Vienna, Austria
| | - M. Iwasaki
- RIKEN, Inst. of Phys. and Chem. Research, Saitama, Japan
| | - P. Kienle
- Stefan-Meyer-Institut für subatomare Physik, Vienna, Austria
- Tech. Univ. München, Physik Dep., Garching, Germany
| | - P. Levi Sandri
- INFN, Laboratori Nazionali di Frascati, Frascati (Roma), Italy
| | - A. Longoni
- Politechno di Milano, Sez. di Elettronica, Milano, Italy
| | - J. Marton
- Stefan-Meyer-Institut für subatomare Physik, Vienna, Austria
| | - S. Okada
- INFN, Laboratori Nazionali di Frascati, Frascati (Roma), Italy
| | - D. Pietreanu
- INFN, Laboratori Nazionali di Frascati, Frascati (Roma), Italy
| | - T. Ponta
- IFIN-HH, Magurele, Bucharest, Romania
| | - A. Rizzo
- INFN, Laboratori Nazionali di Frascati, Frascati (Roma), Italy
| | - A. Romero Vidal
- INFN, Laboratori Nazionali di Frascati, Frascati (Roma), Italy
| | - A. Scordo
- INFN, Laboratori Nazionali di Frascati, Frascati (Roma), Italy
| | - H. Shi
- Univ. of Tokyo, Tokyo, Japan
| | - D.L. Sirghi
- INFN, Laboratori Nazionali di Frascati, Frascati (Roma), Italy
- IFIN-HH, Magurele, Bucharest, Romania
| | - F. Sirghi
- INFN, Laboratori Nazionali di Frascati, Frascati (Roma), Italy
- IFIN-HH, Magurele, Bucharest, Romania
| | | | | | | | - O. Vazquez Doce
- INFN, Laboratori Nazionali di Frascati, Frascati (Roma), Italy
| | - E. Widmann
- Stefan-Meyer-Institut für subatomare Physik, Vienna, Austria
| | - B. Wünschek
- Stefan-Meyer-Institut für subatomare Physik, Vienna, Austria
| | - J. Zmeskal
- Stefan-Meyer-Institut für subatomare Physik, Vienna, Austria
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Okada S, Bazzi M, Beer G, Bombelli L, Bragadireanu A, Cargnelli M, Corradi G, Curceanu (Petrascu) C, d’Uffizi A, Fiorini C, Frizzi T, Ghio F, Girolami B, Guaraldo C, Hayano R, Iliescu M, Ishiwatari T, Iwasaki M, Kienle P, Levi Sandri P, Longoni A, Lucherini V, Marton J, Pietreanu D, Ponta T, Rizzo A, Romero Vidal A, Scordo A, Shi H, Sirghi D, Sirghi F, Tatsuno H, Tudorache A, Tudorache V, Vazquez Doce O, Widmann E, Zmeskal J. Precision Spectroscopy of Kaonic Atoms at DAΦNE. EPJ Web of Conferences 2010. [DOI: 10.1051/epjconf/20100303023] [Citation(s) in RCA: 2] [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: 11/14/2022] Open
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39
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Ajimura S, Beer G, Bhang H, Bragadireanu M, Buehler P, Busso L, Cargnelli M, Choi S, Curceanu C, Enomoto S, Faso D, Fujioka H, Fujiwara Y, Fukuda T, Fukuda Y, Guaraldo C, Hashimoto T, Hayano R, Hiraiwa T, Iio M, Iliescu M, Inoue K, Ishikawa T, Ishimoto S, Ishiwatari T, Itahashi K, Iwai M, Iwasaki M, Kienle P, Kou H, Marton J, Matsuda Y, Mizoi Y, Morra O, Nagae T, Noumi H, Ohnishi H, Okada S, Outa H, Pietreanu D, Sada Y, Sakaguchi A, Sakuma F, Sato M, Sekimoto M, Sirghi D, Sirghi F, Suzuki K, Suzuki S, Suzuki T, Tatsuno H, Tokuda M, Tomono D, Toyoda A, Tsukada K, Widmann E, Yamazaki T, Yim H, Zmeskal J. A search for deeply-bound kaonic nuclear states at J-PARC. EPJ Web of Conferences 2010. [DOI: 10.1051/epjconf/20100307015] [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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Agnello M, Beer G, Benussi L, Bertani M, Bianco S, Botta E, Bressani T, Busso L, Calvo D, Camerini P, Cerello P, Dalena B, De Mori F, D'Erasmo G, Di Santo D, Fabbri FL, Faso D, Feliciello A, Filippi A, Filippini V, Fiore EM, Fujioka H, Gianotti P, Grion N, Lucherini V, Marcello S, Maruta T, Mirfakhrai N, Morra O, Nagae T, Olin A, Outa H, Pace E, Palomba M, Pantaleo A, Panzarasa A, Paticchio V, Piano S, Pompili F, Rui R, Simonetti G, So H, Tomassini S, Toyoda A, Wheadon R, Zenoni A. Evidence for a kaon-bound state K(-)pp produced in K(-) absorption reactions at rest. Phys Rev Lett 2005; 94:212303. [PMID: 16090313 DOI: 10.1103/physrevlett.94.212303] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2005] [Indexed: 05/03/2023]
Abstract
We have searched for a deeply bound kaonic state by using the FINUDA spectrometer installed at the e(+)e(-) collider DAPhiNE. Almost monochromatic K(-)'s produced through the decay of phi(1020) mesons are used to observe K(-) absorption reactions stopped on very thin nuclear targets. Taking this unique advantage, we have succeeded to detect a kaon-bound state K(-)pp through its two-body decay into a Lambda hyperon and a proton. The binding energy and the decay width are determined from the invariant-mass distribution as 115(+6)(-5)(stat)(+3)(-4)(syst) MeV and 67(+14)(-11)(stat)(+2)(-3)(syst) MeV, respectively.
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Affiliation(s)
- M Agnello
- Dipartimento di Fisica del Politecnico di Torino, I-10129 Torino, Italy and INFN Sezione di Torino, I-10125 Torino, Italy
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Beer G, Bragadireanu AM, Cargnelli M, Curceanu-Petrascu C, Egger JP, Fuhrmann H, Guaraldo C, Iliescu M, Ishiwatari T, Itahashi K, Iwasaki M, Kienle P, Koike T, Lauss B, Lucherini V, Ludhova L, Marton J, Mulhauser F, Ponta T, Schaller LA, Seki R, Sirghi DL, Sirghi F, Zmeskal J. Measurement of the kaonic hydrogen x-ray spectrum. Phys Rev Lett 2005; 94:212302. [PMID: 16090312 DOI: 10.1103/physrevlett.94.212302] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2004] [Indexed: 05/03/2023]
Abstract
The DEAR (DAPhiNE exotic atom research) experiment measured the energy of x rays emitted in the transitions to the ground state of kaonic hydrogen. The measured values for the shift epsilon and the width Gamma of the 1s state due to the K(-)p strong interaction are epsilon(1s)=-193 +/- 37 (stat) +/- 6 (syst) eV and Gamma(1s)=249 +/- 111 (stat) +/- 30 (syst) eV, the most precise values yet obtained. The pattern of the kaonic hydrogen K-series lines, K(alpha), K(beta), and K(gamma), was disentangled for the first time.
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Affiliation(s)
- G Beer
- Department of Physics and Astronomy, University of Victoria, P. O. Box 3055, Victoria, British Columbia V8W 3P6, Canada
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Breithardt OA, Beer G, Stolle B, Lieder F, Franke A, Lawrenz T, Hanrath P, Kuhn H. Mid systolic septal deceleration in hypertrophic cardiomyopathy: clinical value and insights into the pathophysiology of outflow tract obstruction by tissue Doppler echocardiography. Heart 2005; 91:379-80. [PMID: 15710730 PMCID: PMC1768773 DOI: 10.1136/hrt.2004.036103] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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44
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Beer G, Kuhn. H. 5�DIAGNOSTIC PITFALLS IN THE ECHOCARDIOGRAPHIC EVALUATION OF HYPERTROPHIC OBSTRUCTIVE CARDIOMYOPATHY (HOCM) REFERRED FOR CATHETER INTERVENTIONAL THERAPY. Echocardiography 2004. [DOI: 10.1111/j.0742-2822.2004.t01-4-09069.x] [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: 11/29/2022] Open
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45
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Abstract
Fabry disease is an X-linked recessive lysosomal storage disorder with variable phenotype characterized by the accumulation of glycosphingolipid in various tissues. Unlike patients with the classical systemic Fabry disease entity, who present with multiple organ involvement, patients with a cardiac variant of Fabry disease are characterized mainly by myocardial hypertrophy. Therefore, the cardiac variant of Fabry disease may be defined as a cardiomyocytic storage disorder, thus, mimicking the clinical features of hypertrophic obstructive and especially non-obstructive cardiomyopathy. In patients with unexplained left ventricular hypertrophy the diagnosis of a cardiac variant of Fabry disease is performed by light- and electron microscopic evaluation of endomyocardial catheter biopsy specimens and/or serologic investigations (decreased activity of alpha-galactosidase A in plasma or leucocytes). Several studies show that between 4% and 8% of unselected patients with the clinical features of hypertrophic non-obstructive cardiomyopathy have a cardiac variant of Fabry disease. In each patient with unexplained myocardial hypertrophy concealed myocardial storage disease, especially cardiac Fabry disease has to be considered and should be ruled out or confirmed by endomyocardial catheter biopsy. This is important because of the recently reported alpha-galactosidase A enzyme replacement therapy in Fabry disease. Randomized, multicenter studies are mandatory to test the hypothesis that enzyme replacement therapy leads to a beneficial clinical effect in the cardiac variant form of Fabry disease and may prevent the progression of the disease in asymptomatic patients.
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Affiliation(s)
- G Beer
- Department of Cardiology and Internal Intensive Care, The Bielefeld Klinikum, Teutoburgerstr. 50, 33604 Bielefeld, Germany.
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Stoob K, Beer G, Weishaupt D. [Adult, afebrile patient with rapidly growing tumor of the upper arm: Bartonella henselae as the etiology]. ROFO-FORTSCHR RONTG 2002; 174:363-4. [PMID: 11885017 DOI: 10.1055/s-2002-20594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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Burg D, Infanger M, Meuli-Simmen C, Stallmach T, Beer G, Amgwerd S, Meyer VE. [Methods, indications and validation of intraoperative nerve conductivity testing]. HANDCHIR MIKROCHIR P 2002; 34:3-16. [PMID: 11898050 DOI: 10.1055/s-2002-22109] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022] Open
Abstract
During nerve surgery, electrodiagnostic methods are applied to assess the availability and viability of nerve fibers and to adjust operative measures accordingly. The validity of this procedure is verified by histology and by the outcome of the operation. This paper explains the techniques of intraoperative nerve action potential (NAP) and somatosensory evoked potential (SEP) recording, how to interpret the electrodiagnostic results, and describes both the special features and the limitations of the methods. We found reliable results of neurography, detecting the presence or absence of spontaneous nerve regeneration across a lesion in continuity months before the reinnervation reached its final target. Based on our results, we suggest that NAP recording of the exposed nerve can widely prevent unnecessary nerve or fascicle resection. Besides this important indication, the nerve function evaluation was successfully used in nerve surgery whenever the quality of the nerve parenchyma was crucial to the operative management. Further indications such as evaluating brachial plexus lesions and the condition of nerve roots, judging the proximal coaptation site in nerve reconstruction, tracing the site of a nerve lesion and identifying the pathophysiology of nerve malfunction are exemplified. Intraoperative nerve conductivity testing should not be considered as a replacement of but rather as a complement to preoperative clinical, electrophysiological and imaging evaluations and a thorough intraoperative morphological examination.
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Affiliation(s)
- D Burg
- Klinik für Wiederherstellungschirurgie, Universitätsspital Zürich, Switzerland.
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Wildi SM, Gämperli A, Beer G, Markwalder K. Severe envenoming by a Gaboon viper (Bitis gabonica). Swiss Med Wkly 2001; 131:54-5. [PMID: 11219193 DOI: 10.4414/smw.2001.06142] [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: 11/07/2022] Open
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49
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Wildi SM, Gämperli A, Beer G, Markwalder K. Severe envenoming by a Gaboon viper (Bitis gabonica). Swiss Med Wkly 2001; 131:54-5. [PMID: 11219193 DOI: 2001/03/smw-06142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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50
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Abstract
BACKGROUND Aggressive angiomyxoma (AAM) is a tumor of the soft tissues predominately occurring in the genital and pelvic area with a strong propensity to local recurrences. The entity was first described in 1983. The tumor is regarded as low-grade sarcoma by some authors; its cause and pathogenesis are presently unknown. PATIENT AND METHOD This is a case report on a 27-year-old man who underwent 4 surgical procedures of the left lower extremity because of a recurrent soft tissue neoplasm, initially (August 1993) diagnosed as a myxolipoma. The patient suffered from recurrences in February 1995, September 1996 and February 1998. The diagnosis was revised at the time of the latest recurrence. A palliative resection with macroscopic residuals left was performed in February 1998, followed by a radiation therapy with 56 Gy total dose and a concomitant administration of the radiosensitizer razoxane per os. The single radiation doses were 200 cGy 5 times a week. RESULTS The small residuals of the tumor obviously regressed although an objective response could not be shown because the lesion was not clearly measurable. A follow-up 2 years after the radiation treatment revealed no recurrence. The time of the local control achieved as yet is already longer than any former time to regrowth between the surgical procedures. This is, to our knowledge, the first description of a therapeutic irradiation of a recurrent aggressive angiomyxoma. CONCLUSION Radiation therapy combined with the sensitizer razoxane is able to control a recurrent AAM for an unknown time. It remains open whether a radiation treatment alone would have had a similar effect.
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Affiliation(s)
- W Rhomberg
- Abteilung für Radioonkologie, Landeskrankenhaus Feldkirch, Austria
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