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Sommer I, Assa S, Bachmann C, Chen 陈未 W, Elcin M, Funk E, Kamisli C, Liu 刘涛 T, Maass AH, Merse S, Morbach C, Neumann A, Neumann T, Quasinowski B, Störk S, Weingartz S, Wietasch G, Weiss Weiß A. Medical Care as Flea Market Bargaining? An International Interdisciplinary Study of Varieties of Shared Decision Making in Physician-Patient Interactions. Teach Learn Med 2024:1-13. [PMID: 38577850 DOI: 10.1080/10401334.2024.2322456] [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: 07/03/2023] [Accepted: 02/05/2024] [Indexed: 04/06/2024]
Abstract
Phenomenon: Shared decision making (SDM) is a core ideal in the interaction between healthcare providers and patients, but the implementation of the SDM ideal in clinical routines has been a relatively slow process. Approach: In a sociological study, 71 interactions between physicians and simulated patients enacting chronic heart failure were video-recorded in China, Germany, the Netherlands, and Turkey as part of a quasi-experimental research design. Participating physicians varied in specialty and level of experience. The secondary analysis presented in this article used content analysis to study core components of SDM in all of the 71 interactions and a grounded theory approach to observe how physicians responded actively to patients even though they did not actively employ the SDM ideal. Findings: Full realization of the SDM ideal remains an exception, but various aspects of SDM in physician-patient interaction were observed in all four locations. Analyses of longer interactions show dynamic processes of interaction that sometimes surprised both patient and physician. We observed varieties of SDM that differ from the SDM ideal but arguably achieve what the SDM ideal is intended to achieve. Our analysis suggests a need to revisit the SDM ideal-to consider whether varieties of SDM may be acceptable, even valuable, in their own right. Insights: The gap between the SDM ideal and SDM as implemented in clinical practice may in part be explained by the tendency of medicine to define and teach SDM through a narrow lens of checklist evaluations. The authors support the argument that SDM defies a checklist approach. SDM is not uniform, but nuanced, dependent on circumstances and setting. As SDM is co-produced by patients and physicians in a dynamic process of interaction, medical researchers should consider and medical learners should be exposed to varieties of SDM-related practice rather than a single idealized model. Observing and discussing worked examples contributes to the physician's development of realistic expectations and personal professional growth.
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Affiliation(s)
- Ilka Sommer
- Institute of Sociology, University of Duisburg-Essen, Duisburg, Germany
| | - Solmaz Assa
- Department of Cardiology, University Medical Center Groningen, Groningen, Netherlands
| | - Cadja Bachmann
- Office of the Dean of Educational Affairs, Rostock University Medical Center, Rostock, Germany
| | - Wei Chen 陈未
- Department of Cardiology, Peking Union Medical College Hospital, Beijing, PR China
| | - Melih Elcin
- Faculty of Medicine, Hacettepe University, Ankara, Turkey
| | - Elisabeth Funk
- Institute of Sociology, University of Duisburg-Essen, Duisburg, Germany
| | - Caner Kamisli
- Institute of German Studies, University of Hamburg, Hamburg, Germany
| | - Tao Liu 刘涛
- School of Public Affairs, Zhejiang University, Hangzhou, PR China
| | - Alexander H Maass
- Department of Cardiology, University Medical Center Groningen, Groningen, Netherlands
| | - Stefanie Merse
- Empathische Interkulturelle Medizinische Kommunikation, University of Duisburg-Essen, Duisburg, Germany
| | - Caroline Morbach
- Department of Clinical Research & Epidemiology, Comprehensive Heart Failure Center, and Department Medicine I, University Hospital Würzburg, Würzburg, Germany
| | - Anja Neumann
- Institute of Healthcare Management and Research, University of Duisburg-Essen, Duisburg, Germany
| | - Till Neumann
- Outpatient Department of Cardiology Cardio-Praxis, Bochum, Germany
| | | | - Stefan Störk
- Department of Clinical Research & Epidemiology, Comprehensive Heart Failure Center, and Department Medicine I, University Hospital Würzburg, Würzburg, Germany
| | - Sarah Weingartz
- Institute of Sociology, University of Duisburg-Essen, Duisburg, Germany
| | - Götz Wietasch
- Department of Anesthesiology, University Medical Center Groningen, Groningen, Netherlands
| | - Anja Weiss Weiß
- Institute of Sociology, University of Duisburg-Essen, Duisburg, Germany
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de Koning MSLY, Al Ali L, Bourgonje AR, Assa S, Pasch A, van Goor H, Lipsic E, van der Harst P. Associations of systemic oxidative stress with functional outcomes after ST-segment elevation myocardial infarction. Int J Cardiol 2023; 391:131214. [PMID: 37517783 DOI: 10.1016/j.ijcard.2023.131214] [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: 03/22/2023] [Revised: 07/23/2023] [Accepted: 07/24/2023] [Indexed: 08/01/2023]
Abstract
BACKGROUND Ischemia-reperfusion is accompanied by oxidative stress. Serum free thiols (FTs; sulfhydryl groups) reliably reflect systemic oxidative stress. This study evaluates longitudinal changes in FTs and their associations with outcomes after ST-segment elevation myocardial infarction (STEMI). METHODS FTs were detected in archived serum samples from 378 participants of a neutral randomized trial on metformin therapy after STEMI. FT levels were determined at presentation with STEMI and at 24 h, 2 weeks, 4 months and 1 year thereafter. Outcomes included infarct size and left ventricular ejection fraction (LVEF), both determined with cardiac magnetic resonance imaging after 4 months, and 5-year major adverse cardiovascular events (MACE). RESULTS Serum FT concentrations at presentation and at 24 h were 356 ± 91 and 353 ± 76 μmol/L, respectively. The change in FTs between presentation and 24 h (ΔFTs) was associated with outcomes in age- and sex-adjusted analysis (per 100 μmol/L FT increase, β = -0.87 for infarct size, 95% confidence interval (CI): -1.75 to -0.001, P = 0.050; β = 1.31, 95% CI: 0.37 to 2.25 for LVEF, P = 0.007). Associations between ΔFTs and LVEF were markedly stronger in patients with Thrombolysis in Myocardial Infarction flow of 0 or 1 before percutaneous coronary intervention (PCI)(β = 2.73, 95% CI: 0.68 to 4.77, P = 0.009). Declining FTs during the first 24 h might be associated with higher incidence of 5-year MACE (P = 0.09). CONCLUSIONS Changes in oxidative stress early post-PCI may predict functional outcomes after STEMI. Our findings warrant validation in larger cohorts, and then may be used as rationale for development of thiol-targeted therapy in ischemic heart disease.
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Affiliation(s)
- Marie-Sophie L Y de Koning
- University of Groningen, University Medical Center Groningen, Department of Cardiology, Groningen, the Netherlands.
| | - Lawien Al Ali
- University of Groningen, University Medical Center Groningen, Department of Cardiology, Groningen, the Netherlands
| | - Arno R Bourgonje
- University of Groningen, University Medical Center Groningen, Department of Gastroenterology and Hepatology, Groningen, the Netherlands
| | - Solmaz Assa
- University of Groningen, University Medical Center Groningen, Department of Cardiology, Groningen, the Netherlands
| | - Andreas Pasch
- Institute for Physiology and Pathophysiology, Johannes Kepler University, Linz 4040, Austria; Lindenhofspital, Department of Nephrology, Bern 3011, Switzerland; Nierenpraxis Bern, Bern 3011, Switzerland
| | - Harry van Goor
- University of Groningen, University Medical Center Groningen, Department of Pathology and Medical Biology, Groningen, the Netherlands
| | - Erik Lipsic
- University of Groningen, University Medical Center Groningen, Department of Cardiology, Groningen, the Netherlands
| | - Pim van der Harst
- University of Groningen, University Medical Center Groningen, Department of Cardiology, Groningen, the Netherlands; Department of Cardiology, Division Heart and Lungs, University Medical Center Utrecht, Utrecht, the Netherlands
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Drouven JW, Wiegersma J, Assa S, Post A, El Moumni M, Özyilmaz A, Zeebregts CJ, Franssen CFM. Differences in shuntflow (Qa), cardiac function and mortality between hemodialysis patients with a lower-arm fistula, an upper-arm fistula, and an arteriovenous graft. J Vasc Access 2023; 24:1456-1462. [PMID: 35466801 PMCID: PMC10714698 DOI: 10.1177/11297298221092741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Accepted: 03/15/2022] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND High-flow vascular accesses may contribute to cardiovascular morbidity and mortality in hemodialysis patients. Since shuntflow (Qa) varies between vascular access types, the current study aims to investigate differences in left ventricular hypertrophy (LVH), systolic and diastolic function parameters, and all-cause mortality between patients with a lower-arm arteriovenous fistula (AVF), an upper-arm AVF, and an arteriovenous graft (AVG). METHODS A post hoc analysis of 100 patients was performed in a single-center, prospective observational study. Echocardiography examinations were performed prior to the dialysis session. Qa measurements were performed using ultrasound dilution. Patient groups were categorized by vascular access type. Cox proportional hazards models were used to investigate the association of shunt type with all-cause mortality with adjustment for potential confounders including, amongst others, age, sex, diabetes, the duration of hemodialysis treatment, shunt vintage, and Qa. RESULTS Patients with an upper-arm AVF had significantly (p < 0.001) higher Qa (median 1902, IQR 1223-2508 ml/min) compared to patients with a lower-arm AVF (median 891, IQR 696-1414 ml/min) and patients with an AVG (median 881, IQR 580-1157 ml/min). The proportion of patients with LVH and systolic and diastolic echocardiographic parameters did not differ significantly between groups. Survival analysis showed that an upper-arm AVF was associated with a significantly lower all-cause mortality (p = 0.04) compared to a lower-arm AVF. CONCLUSIONS Patients with an upper-arm fistula had a higher Qa but similar systolic and diastolic cardiac function. Patients with an upper-arm fistula had a significantly lower risk of all-cause mortality compared with patients with a lower-arm fistula.
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Affiliation(s)
- Johannes W Drouven
- Division of Vascular Surgery, Department of Surgery, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Janke Wiegersma
- Division of Nephrology, Department of Internal Medicine, University Medical Centre Groningen, Groningen, The Netherlands
| | - Solmaz Assa
- Division of Nephrology, Department of Internal Medicine, University Medical Centre Groningen, Groningen, The Netherlands
| | - Adrian Post
- Division of Nephrology, Department of Internal Medicine, University Medical Centre Groningen, Groningen, The Netherlands
| | - Mostafa El Moumni
- Division of Nephrology, Department of Internal Medicine, University Medical Centre Groningen, Groningen, The Netherlands
| | - Akin Özyilmaz
- Division of Nephrology, Department of Internal Medicine, University Medical Centre Groningen, Groningen, The Netherlands
| | - Clark J Zeebregts
- Division of Vascular Surgery, Department of Surgery, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Casper FM Franssen
- Division of Nephrology, Department of Internal Medicine, University Medical Centre Groningen, Groningen, The Netherlands
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de Koning MSLY, Emmens JE, Romero-Hernández E, Bourgonje AR, Assa S, Figarska SM, Cleland JGF, Samani NJ, Ng LL, Lang CC, Metra M, Filippatos GS, van Veldhuisen DJ, Anker SD, Dickstein K, Voors AA, Lipsic E, van Goor H, van der Harst P. Systemic oxidative stress associates with disease severity and outcome in patients with new-onset or worsening heart failure. Clin Res Cardiol 2023; 112:1056-1066. [PMID: 36997667 PMCID: PMC10062262 DOI: 10.1007/s00392-023-02171-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Accepted: 02/08/2023] [Indexed: 04/01/2023]
Abstract
BACKGROUND Oxidative stress may be a key pathophysiological mediator in the development and progression of heart failure (HF). The role of serum-free thiol concentrations, as a marker of systemic oxidative stress, in HF remains largely unknown. OBJECTIVE The purpose of this study was to investigate associations between serum-free thiol concentrations and disease severity and clinical outcome in patients with new-onset or worsening HF. METHODS Serum-free thiol concentrations were determined by colorimetric detection in 3802 patients from the BIOlogy Study to TAilored Treatment in Chronic Heart Failure (BIOSTAT-CHF). Associations between free thiol concentrations and clinical characteristics and outcomes, including all-cause mortality, cardiovascular mortality, and a composite of HF hospitalization and all-cause mortality during a 2-years follow-up, were reported. RESULTS Lower serum-free thiol concentrations were associated with more advanced HF, as indicated by worse NYHA class, higher plasma NT-proBNP (P < 0.001 for both) and with higher rates of all-cause mortality (hazard ratio (HR) per standard deviation (SD) decrease in free thiols: 1.253, 95% confidence interval (CI): 1.171-1.341, P < 0.001), cardiovascular mortality (HR per SD: 1.182, 95% CI: 1.086-1.288, P < 0.001), and the composite outcome (HR per SD: 1.058, 95% CI: 1.001-1.118, P = 0.046). CONCLUSIONS In patients with new-onset or worsening HF, a lower serum-free thiol concentration, indicative of higher oxidative stress, is associated with increased HF severity and poorer prognosis. Our results do not prove causality, but our findings may be used as rationale for future (mechanistic) studies on serum-free thiol modulation in heart failure. Associations of serum-free thiol concentrations with heart failure severity and outcomes.
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Affiliation(s)
- Marie-Sophie L Y de Koning
- Department of Cardiology, University of Groningen, University Medical Center Groningen, Hanzeplein 1, PO Box 30.001, 9700 RB, Groningen, The Netherlands.
| | - Johanna E Emmens
- Department of Cardiology, University of Groningen, University Medical Center Groningen, Hanzeplein 1, PO Box 30.001, 9700 RB, Groningen, The Netherlands
| | | | - Arno R Bourgonje
- Department of Gastroenterology and Hepatology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Solmaz Assa
- Department of Cardiology, University of Groningen, University Medical Center Groningen, Hanzeplein 1, PO Box 30.001, 9700 RB, Groningen, The Netherlands
| | - Sylwia M Figarska
- Department of Cardiology, University of Groningen, University Medical Center Groningen, Hanzeplein 1, PO Box 30.001, 9700 RB, Groningen, The Netherlands
| | - John G F Cleland
- National Heart and Lung Institute, Royal Brompton and Harefield Hospitals, Imperial College, London, UK
- Robertson Centre for Biostatistics and Clinical Trials, University of Glasgow, Glasgow, UK
| | - Nilesh J Samani
- Department of Cardiovascular Sciences, University of Leicester, NIHR Leicester Biomedical Research Centre, Glenfield Hospital, Leicester, UK
| | - Leong L Ng
- Department of Cardiovascular Sciences, University of Leicester, NIHR Leicester Biomedical Research Centre, Glenfield Hospital, Leicester, UK
| | - Chim C Lang
- Division of Molecular and Clinical Medicine, School of Medicine, University of Dundee, Dundee, UK
| | - Marco Metra
- Department of Medical and Surgical Specialties, Radiological Sciences and Public Health, Institute of Cardiology, University of Brescia, Brescia, Italy
| | | | - Dirk J van Veldhuisen
- Department of Cardiology, University of Groningen, University Medical Center Groningen, Hanzeplein 1, PO Box 30.001, 9700 RB, Groningen, The Netherlands
| | - Stefan D Anker
- Department of Cardiology (CVK), Center for Regenerative Therapies (BCRT), German Centre for Cardiovascular Research (DZHK) Partner Site Berlin, Berlin Institute of Health, Charité Universitätsmedizin Berlin, Berlin, Germany
| | | | - Adriaan A Voors
- Department of Cardiology, University of Groningen, University Medical Center Groningen, Hanzeplein 1, PO Box 30.001, 9700 RB, Groningen, The Netherlands
| | - Erik Lipsic
- Department of Cardiology, University of Groningen, University Medical Center Groningen, Hanzeplein 1, PO Box 30.001, 9700 RB, Groningen, The Netherlands
| | - Harry van Goor
- Department of Pathology and Medical Biology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Pim van der Harst
- Department of Cardiology, University of Groningen, University Medical Center Groningen, Hanzeplein 1, PO Box 30.001, 9700 RB, Groningen, The Netherlands
- Division Heart and Lungs, Department of Cardiology, University Medical Center Utrecht, Utrecht, The Netherlands
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5
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Assa S, Vernooy K, van Stipdonk AMW. Cardiovascular Implantable Electronic Devices Enabled Remote Heart Failure Monitoring; What We Have Learned and Where to Go Next. J Cardiovasc Dev Dis 2023; 10:jcdd10040152. [PMID: 37103031 PMCID: PMC10142884 DOI: 10.3390/jcdd10040152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 03/28/2023] [Accepted: 03/29/2023] [Indexed: 04/05/2023] Open
Abstract
Despite recent developments, heart failure (HF) remains to be a great burden to the individual patient, entailing major morbidity and mortality. Moreover, HF is a great burden to overall healthcare, mainly because of frequent hospitalizations. Timely diagnosis of HF deterioration and implementation of appropriate therapy may prevent hospitalization and eventually improve a patient’s prognosis; however, depending on the patient’s presentation, the signs and symptoms of HF often offer too little therapeutic window to prevent hospitalizations. Cardiovascular implantable electronic devices (CIEDs) can provide real-time physiologic parameters and remote monitoring of these parameters can potentially help to identify patients at high risk. However, routine implementation of remote monitoring of CIEDs has still not been widely used in daily patient care. This review gives a detailed description of available metrics for remote HF monitoring, the studies that provide evidence of their efficacy, ways to implement them in clinical HF practice, as well as lessons learned on where to go on from where we currently are.
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Affiliation(s)
- Solmaz Assa
- Department of Cardiology, Treant Zorggroep, 7824 AA Emmen, The Netherlands
| | - Kevin Vernooy
- Department of Cardiology, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University Medical Centre, 6229 HX Maastricht, The Netherlands
| | - Antonius M. W. van Stipdonk
- Department of Cardiology, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University Medical Centre, 6229 HX Maastricht, The Netherlands
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Quasinowski B, Assa S, Bachmann C, Chen W, Elcin M, Kamisli C, Liu T, Maass AH, Merse S, Morbach C, Neumann A, Neumann T, Sommer I, Stoerk S, Weingartz S, Weiss A, Wietasch G. Hearts in their hands-Physicians' gestures embodying shared professional knowledge around the world. Sociol Health Illn 2023. [PMID: 36998218 DOI: 10.1111/1467-9566.13639] [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: 02/28/2022] [Accepted: 03/14/2023] [Indexed: 06/19/2023]
Abstract
The biomedical approach to medical knowledge is widely accepted around the world. This article considers whether the incorporated aspects of physician-patient interaction have become similarly common across the globe by comparing the gestures that physicians use in their interactions with patients. Up to this point, there has been little research on physicians' use of gestures in health-care settings. We explore how-in four university hospitals in Turkey, the People's Republic of China, The Netherlands and Germany-physicians use gesture in their discussions with simulated patients about the condition of heart failure. Our analysis confirms the importance of gestures for organising both the personal interaction and the knowledge transfer between physician and patient. From the perspective of global comparison, it is notable that physicians in all four hospitals used similar gestures. This demonstrates the globality of biomedical knowledge in an embodied mode. Physicians used gestures for a range of purposes, including to convey the idea of an 'anatomical map' and for constructing visual models of (patho-)physiological processes. Since biomedical language is rife with metaphor, it was not surprising that we also identified an accompanying metaphorical gesture which has a similar form in the various locations that were part of the study.
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Affiliation(s)
| | - Solmaz Assa
- Department of Cardiology, University Medical Center Groningen, Groningen, The Netherlands
- Department of Cardiology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Cadja Bachmann
- Faculty of Medicine, Office of the Dean of Education, University of Rostock, Rostock, Mecklenburg-Vorpommern, Germany
| | - Wei Chen
- Department of Cardiology, Peking Union Medical College Hospital, Beijing, China
| | - Melih Elcin
- Faculty of Medicine, Hacettepe University, Ankara, Turkey
| | - Caner Kamisli
- Faculty of Humanities, Institute of German Studies, University of Hamburg, Hamburg, Germany
| | - Tao Liu
- School of Public Affairs and Academy of Social Governance, Zhejiang University, Zhejiang, China
| | - Alexander H Maass
- Department of Cardiology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Stefanie Merse
- Faculty of Medicine, University of Duisburg-Essen, Duisburg, Nordrhein-Westfalen, Germany
| | - Caroline Morbach
- Department of Clinical Research & Epidemiology, Comprehensive Heart Failure Center and Department Internal Medicine I, University Hospital Würzburg, Würzburg, Bayern, Germany
| | - Anja Neumann
- Faculty of Economics and Business Administration, Institute of Healthcare Management, University of Duisburg-Essen, Duisburg, Germany
| | - Till Neumann
- Outpatient Department of Cardiology Cardio-Praxis, Bochum, Nordrhein-Westfalen, Germany
| | - Ilka Sommer
- Faculty of Social Sciences, Institute of Sociology, University of Duisburg-Essen, Duisburg, Nordrhein-Westfalen, Germany
| | - Stefan Stoerk
- Department of Clinical Research & Epidemiology, Comprehensive Heart Failure Center and Department Internal Medicine I, University Hospital Würzburg, Würzburg, Bayern, Germany
| | - Sarah Weingartz
- Faculty of Social Sciences, Institute of Sociology, University of Duisburg-Essen, Duisburg, Nordrhein-Westfalen, Germany
| | - Anja Weiss
- Faculty of Social Sciences, Institute of Sociology, University of Duisburg-Essen, Duisburg, Nordrhein-Westfalen, Germany
| | - Goetz Wietasch
- Department of Anesthesiology, University Medical Center Groningen, Groningen, The Netherlands
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7
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Al Ali L, Groot HE, Assa S, Lipsic E, Hummel YM, van Veldhuisen DJ, Voors AA, van der Horst ICC, Lam CS, van der Harst P. Predictors of adverse diastolic remodeling in non-diabetic patients presenting with ST-elevation myocardial infarction. BMC Cardiovasc Disord 2023; 23:44. [PMID: 36690932 PMCID: PMC9872414 DOI: 10.1186/s12872-023-03064-7] [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] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Accepted: 01/12/2023] [Indexed: 01/25/2023] Open
Abstract
BACKGROUND Adverse systolic remodeling after ST-elevation myocardial infarction (STEMI) is associated with poor clinical outcomes. However, little is known about diastolic remodeling. The purpose of this study was to identify the factors leading to diastolic remodeling. METHODS Echocardiography was performed during hospitalization and at 4 months follow-up in 267 non-diabetic STEMI patients from the GIPS-III trial. As parameters of diastolic remodeling we used (1.) the E/e' at 4 months adjusted for the E/e' at hospitalization and (2.) the change in E/e' between hospitalization and 4 months. Multivariable regression models correcting for age and sex were constructed to identify possible association of clinical and angiographic variables as well as biomarkers with diastolic remodeling. RESULTS Older age, female gender, hypertension, multi vessel disease, higher glucose and higher peak CK were independent predictors of higher E/e' at 4 months in a multivariable model (R2:0.20). After adjustment for E/e' during hospitalization only female gender, multivessel disease and higher glucose remained predictors of E/e' at four months (R2:0.40). Lower myocardial blush grade, AST and NT-proBNP were independent predictors of a higher increase of E/e' between hospitalization and at 4 months in a multivariable model (R2:0.08). CONCLUSIONS Our data supports the hypothesis that female gender, multivessel coronary artery disease, and microvascular damage are important predictors of adverse diastolic remodeling after STEMI. In addition, our data suggests that older age and hypertension prior to STEMI may have contributed to worse pre-existing diastolic function. TRIAL REGISTRATION NIH, NCT01217307. Prospectively registered on October 8th 2010, https://clinicaltrials.gov/ct2/show/NCT01217307 .
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Affiliation(s)
- Lawien Al Ali
- Department of Cardiology, University Medical Center Groningen, University of Groningen, Hanzeplein 1, PO Box 30.001, 9700 RB, Groningen, the Netherlands.
| | - Hilde E Groot
- Department of Cardiology, University Medical Center Groningen, University of Groningen, Hanzeplein 1, PO Box 30.001, 9700 RB, Groningen, the Netherlands
| | - Solmaz Assa
- Department of Cardiology, University Medical Center Groningen, University of Groningen, Hanzeplein 1, PO Box 30.001, 9700 RB, Groningen, the Netherlands
| | - Erik Lipsic
- Department of Cardiology, University Medical Center Groningen, University of Groningen, Hanzeplein 1, PO Box 30.001, 9700 RB, Groningen, the Netherlands
| | - Yoran M Hummel
- Department of Cardiology, University Medical Center Groningen, University of Groningen, Hanzeplein 1, PO Box 30.001, 9700 RB, Groningen, the Netherlands
| | - Dirk J van Veldhuisen
- Department of Cardiology, University Medical Center Groningen, University of Groningen, Hanzeplein 1, PO Box 30.001, 9700 RB, Groningen, the Netherlands
| | - Adriaan A Voors
- Department of Cardiology, University Medical Center Groningen, University of Groningen, Hanzeplein 1, PO Box 30.001, 9700 RB, Groningen, the Netherlands
| | - Iwan C C van der Horst
- Department of Critical Care, Maastricht University Medical Center, Maastricht, the Netherlands
| | - Carolyn S Lam
- Department of Cardiology, University Medical Center Groningen, University of Groningen, Hanzeplein 1, PO Box 30.001, 9700 RB, Groningen, the Netherlands
- National Heart Centre Singapore, Duke-National University of Singapore, Singapore, Singapore
| | - Pim van der Harst
- Department of Cardiology, University Medical Center Groningen, University of Groningen, Hanzeplein 1, PO Box 30.001, 9700 RB, Groningen, the Netherlands
- Department of Heart and Lungs, University Medical Center Utrecht, University of Utrecht, Utrecht, the Netherlands
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8
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de Koning MSLY, van Dorp P, Assa S, Hartman MHT, Voskuil M, Anthonio RL, Veen D, Pundziute-Do Prado G, Leiner T, van Goor H, van der Meer P, van Veldhuisen DJ, Nijveldt R, Lipsic E, van der Harst P. Rationale and Design of the Groningen Intervention Study for the Preservation of Cardiac Function with Sodium Thiosulfate after St-segment Elevation Myocardial Infarction (GIPS-IV) trial. Am Heart J 2022; 243:167-176. [PMID: 34534493 DOI: 10.1016/j.ahj.2021.08.012] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Accepted: 08/18/2021] [Indexed: 01/24/2023]
Abstract
BACKGROUND Ischemia and subsequent reperfusion cause myocardial injury in patients presenting with ST-segment elevation myocardial infarction (STEMI). Hydrogen sulfide (H2S) reduces "ischemia-reperfusion injury" in various experimental animal models, but has not been evaluated in humans. This trial will examine the efficacy and safety of the H2S-donor sodium thiosulfate (STS) in patients presenting with a STEMI. STUDY DESIGN The Groningen Intervention study for the Preservation of cardiac function with STS after STEMI (GIPS-IV) trial (NCT02899364) is a double-blind, randomized, placebo-controlled, multicenter trial, which will enroll 380 patients with a first STEMI. Patients receive STS 12.5 grams intravenously or matching placebo in addition to standard care immediately at arrival at the catheterization laboratory after providing consent. A second dose is administered 6 hours later at the coronary care unit. The primary endpoint is myocardial infarct size as quantified by cardiac magnetic resonance imaging 4 months after randomization. Secondary endpoints include the effect of STS on peak CK-MB during admission and left ventricular ejection fraction and NT-proBNP levels at 4 months follow-up. Patients will be followed-up for 2 years to assess clinical endpoints. CONCLUSIONS The GIPS-IV trial is the first study to determine the effect of a H2S-donor on myocardial infarct size in patients presenting with STEMI.
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9
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de Koning MSLY, Westenbrink BD, Assa S, Garcia E, Connelly MA, van Veldhuisen DJ, Dullaart RPF, Lipsic E, van der Harst P. Association of Circulating Ketone Bodies With Functional Outcomes After ST-Segment Elevation Myocardial Infarction. J Am Coll Cardiol 2021; 78:1421-1432. [PMID: 34593124 DOI: 10.1016/j.jacc.2021.07.054] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Revised: 07/26/2021] [Accepted: 07/28/2021] [Indexed: 01/25/2023]
Abstract
BACKGROUND Circulating ketone bodies (KBs) are increased in patients with heart failure (HF), corresponding with increased cardiac KB metabolism and HF severity. However, the role of circulating KBs in ischemia/reperfusion remains unknown. OBJECTIVES This study sought to investigate longitudinal changes of KBs and their associations with functional outcomes in patients presenting with ST-segment elevation myocardial infarction (STEMI). METHODS KBs were measured in 369 participants from a randomized trial on early metformin therapy after STEMI. Nonfasting plasma concentrations of KBs (β-hydroxybutyrate, acetoacetate, and acetone) were measured by nuclear magnetic resonance spectroscopy at presentation, at 24 hours, and after 4 months. Myocardial infarct size and left ventricular ejection fraction (LVEF) were determined by cardiac magnetic resonance imaging at 4 months. Associations of circulating KBs with infarct size and LVEF were determined using multivariable linear regression analyses. RESULTS Circulating KBs were high at presentation with STEMI (median total KBs: 520 μmol/L; interquartile range [IQR]: 315-997 μmol/L). At 24 hours after reperfusion, KBs were still high compared with levels at 4-month follow-up (206 μmol/L [IQR: 174-246] vs 166 μmol/L [IQR: 143-201], respectively; P < 0.001). Increased KB concentrations at 24 hours were independently associated with larger myocardial infarct size (total KBs, per 100 μmol/L: β = 1.56; 95% confidence interval: 0.29-2.83; P = 0.016) and lower LVEF (β = -1.78; 95% CI: (-3.17 to -0.39; P = 0.012). CONCLUSIONS Circulating KBs are increased in patients presenting with STEMI. Higher KBs at 24 hours are associated with functional outcomes after STEMI, which suggests a potential role for ketone metabolism in response to myocardial ischemia. (Metabolic Modulation With Metformin to Reduce Heart Failure After Acute Myocardial Infarction: Glycometabolic Intervention as Adjunct to Primary Coronary Intervention in ST Elevation Myocardial Infarction (GIPS-III): a Randomized Controlled Trial; NCT01217307).
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Affiliation(s)
- Marie-Sophie L Y de Koning
- Department of Cardiology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands.
| | - B Daan Westenbrink
- Department of Cardiology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Solmaz Assa
- Department of Cardiology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Erwin Garcia
- Laboratory Corporation of America Holdings (Labcorp), Morrisville, North Carolina, USA
| | - Margery A Connelly
- Laboratory Corporation of America Holdings (Labcorp), Morrisville, North Carolina, USA
| | - Dirk J van Veldhuisen
- Department of Cardiology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Robin P F Dullaart
- Department of Endocrinology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Erik Lipsic
- Department of Cardiology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Pim van der Harst
- Department of Cardiology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands; Department of Cardiology, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands
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10
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Arslan F, Damman P, Zwart B, Appelman Y, Voskuil M, de Vos A, van Royen N, Jukema JW, Waalewijn R, Hermanides RS, Woudstra P, Ten Cate T, Lemkes JS, Vink MA, Balder W, van der Wielen MLJ, Vlaar PJ, van der Heijden DJ, Assa S, van 't Hof AW, Ten Berg JM. 2020 ESC Guidelines on acute coronary syndrome without ST-segment elevation : Recommendations and critical appraisal from the Dutch ACS and Interventional Cardiology working groups. Neth Heart J 2021; 29:557-565. [PMID: 34232481 PMCID: PMC8556454 DOI: 10.1007/s12471-021-01593-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/03/2021] [Indexed: 11/27/2022] Open
Abstract
Recently, the European Society of Cardiology (ESC) has updated its guidelines for the management of patients with acute coronary syndrome (ACS) without ST-segment elevation. The current consensus document of the Dutch ACS working group and the Working Group of Interventional Cardiology of the Netherlands Society of Cardiology aims to put the 2020 ESC Guidelines into the Dutch perspective and to provide practical recommendations for Dutch cardiologists, focusing on antiplatelet therapy, risk assessment and criteria for invasive strategy.
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Affiliation(s)
- F Arslan
- Vivantes Klinikum am Urban, Berlin, Germany.,St. Antonius Hospital, Nieuwegein, The Netherlands
| | - P Damman
- Radboud University Medical Center, Nijmegen, The Netherlands.
| | - B Zwart
- Elisabeth-TweeSteden Hospital, Tilburg, The Netherlands
| | - Y Appelman
- Amsterdam University Medical Centers, Amsterdam, The Netherlands
| | - M Voskuil
- University Medical Center Utrecht, Utrecht, The Netherlands
| | - A de Vos
- Catharina Hospital, Eindhoven, The Netherlands
| | - N van Royen
- Radboud University Medical Center, Nijmegen, The Netherlands
| | - J W Jukema
- Leiden University Medical Center, Leiden, The Netherlands
| | | | | | - P Woudstra
- Medisch Centrum Leeuwarden, Leeuwarden, The Netherlands
| | - T Ten Cate
- Radboud University Medical Center, Nijmegen, The Netherlands
| | - J S Lemkes
- Amsterdam University Medical Centers, Amsterdam, The Netherlands
| | - M A Vink
- Onze Lieve Vrouwe Gasthuis, Amsterdam, The Netherlands
| | - W Balder
- University Medical Center Utrecht, Utrecht, The Netherlands
| | | | - P J Vlaar
- Catharina Hospital, Eindhoven, The Netherlands
| | | | - S Assa
- University Medical Center Groningen, Groningen, The Netherlands
| | - A W van 't Hof
- Maastricht University Medical Center, Maastricht, The Netherlands
| | - J M Ten Berg
- St. Antonius Hospital, Nieuwegein, The Netherlands
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11
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Ntalla I, Weng LC, Cartwright JH, Hall AW, Sveinbjornsson G, Tucker NR, Choi SH, Chaffin MD, Roselli C, Barnes MR, Mifsud B, Warren HR, Hayward C, Marten J, Cranley JJ, Concas MP, Gasparini P, Boutin T, Kolcic I, Polasek O, Rudan I, Araujo NM, Lima-Costa MF, Ribeiro ALP, Souza RP, Tarazona-Santos E, Giedraitis V, Ingelsson E, Mahajan A, Morris AP, Del Greco M F, Foco L, Gögele M, Hicks AA, Cook JP, Lind L, Lindgren CM, Sundström J, Nelson CP, Riaz MB, Samani NJ, Sinagra G, Ulivi S, Kähönen M, Mishra PP, Mononen N, Nikus K, Caulfield MJ, Dominiczak A, Padmanabhan S, Montasser ME, O'Connell JR, Ryan K, Shuldiner AR, Aeschbacher S, Conen D, Risch L, Thériault S, Hutri-Kähönen N, Lehtimäki T, Lyytikäinen LP, Raitakari OT, Barnes CLK, Campbell H, Joshi PK, Wilson JF, Isaacs A, Kors JA, van Duijn CM, Huang PL, Gudnason V, Harris TB, Launer LJ, Smith AV, Bottinger EP, Loos RJF, Nadkarni GN, Preuss MH, Correa A, Mei H, Wilson J, Meitinger T, Müller-Nurasyid M, Peters A, Waldenberger M, Mangino M, Spector TD, Rienstra M, van de Vegte YJ, van der Harst P, Verweij N, Kääb S, Schramm K, Sinner MF, Strauch K, Cutler MJ, Fatkin D, London B, Olesen M, Roden DM, Benjamin Shoemaker M, Gustav Smith J, Biggs ML, Bis JC, Brody JA, Psaty BM, Rice K, Sotoodehnia N, De Grandi A, Fuchsberger C, Pattaro C, Pramstaller PP, Ford I, Wouter Jukema J, Macfarlane PW, Trompet S, Dörr M, Felix SB, Völker U, Weiss S, Havulinna AS, Jula A, Sääksjärvi K, Salomaa V, Guo X, Heckbert SR, Lin HJ, Rotter JI, Taylor KD, Yao J, de Mutsert R, Maan AC, Mook-Kanamori DO, Noordam R, Cucca F, Ding J, Lakatta EG, Qian Y, Tarasov KV, Levy D, Lin H, Newton-Cheh CH, Lunetta KL, Murray AD, Porteous DJ, Smith BH, Stricker BH, Uitterlinden A, van den Berg ME, Haessler J, Jackson RD, Kooperberg C, Peters U, Reiner AP, Whitsel EA, Alonso A, Arking DE, Boerwinkle E, Ehret GB, Soliman EZ, Avery CL, Gogarten SM, Kerr KF, Laurie CC, Seyerle AA, Stilp A, Assa S, Abdullah Said M, Yldau van der Ende M, Lambiase PD, Orini M, Ramirez J, Van Duijvenboden S, Arnar DO, Gudbjartsson DF, Holm H, Sulem P, Thorleifsson G, Thorolfsdottir RB, Thorsteinsdottir U, Benjamin EJ, Tinker A, Stefansson K, Ellinor PT, Jamshidi Y, Lubitz SA, Munroe PB. Multi-ancestry GWAS of the electrocardiographic PR interval identifies 202 loci underlying cardiac conduction. Nat Commun 2020; 11:2542. [PMID: 32439900 PMCID: PMC7242331 DOI: 10.1038/s41467-020-15706-x] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Accepted: 03/18/2020] [Indexed: 12/24/2022] Open
Abstract
The electrocardiographic PR interval reflects atrioventricular conduction, and is associated with conduction abnormalities, pacemaker implantation, atrial fibrillation (AF), and cardiovascular mortality. Here we report a multi-ancestry (N = 293,051) genome-wide association meta-analysis for the PR interval, discovering 202 loci of which 141 have not previously been reported. Variants at identified loci increase the percentage of heritability explained, from 33.5% to 62.6%. We observe enrichment for cardiac muscle developmental/contractile and cytoskeletal genes, highlighting key regulation processes for atrioventricular conduction. Additionally, 8 loci not previously reported harbor genes underlying inherited arrhythmic syndromes and/or cardiomyopathies suggesting a role for these genes in cardiovascular pathology in the general population. We show that polygenic predisposition to PR interval duration is an endophenotype for cardiovascular disease, including distal conduction disease, AF, and atrioventricular pre-excitation. These findings advance our understanding of the polygenic basis of cardiac conduction, and the genetic relationship between PR interval duration and cardiovascular disease.
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Affiliation(s)
- Ioanna Ntalla
- William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Lu-Chen Weng
- Cardiovascular Research Center, Massachusetts General Hospital, Boston, MA, USA
- Program in Medical and Population Genetics, The Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - James H Cartwright
- William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Amelia Weber Hall
- Cardiovascular Research Center, Massachusetts General Hospital, Boston, MA, USA
- Program in Medical and Population Genetics, The Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | | | - Nathan R Tucker
- Cardiovascular Research Center, Massachusetts General Hospital, Boston, MA, USA
- Program in Medical and Population Genetics, The Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - Seung Hoan Choi
- Program in Medical and Population Genetics, The Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - Mark D Chaffin
- Program in Medical and Population Genetics, The Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - Carolina Roselli
- Program in Medical and Population Genetics, The Broad Institute of MIT and Harvard, Cambridge, MA, USA
- Department of Cardiology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Michael R Barnes
- William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
- National Institute for Health Research, Barts Cardiovascular Biomedical Research Centre, Queen Mary University of London, London, UK
| | - Borbala Mifsud
- William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
- College of Health and Life Sciences, Hamad Bin Khalifa University, Education City, Doha, Qatar
| | - Helen R Warren
- William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
- National Institute for Health Research, Barts Cardiovascular Biomedical Research Centre, Queen Mary University of London, London, UK
| | - Caroline Hayward
- Medical Research Council Human Genetics Unit, Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, UK
| | - Jonathan Marten
- Medical Research Council Human Genetics Unit, Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, UK
| | - James J Cranley
- William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Maria Pina Concas
- Institute for Maternal and Child Health-IRCCS 'Burlo Garofolo', Trieste, Italy
| | - Paolo Gasparini
- Institute for Maternal and Child Health-IRCCS 'Burlo Garofolo', Trieste, Italy
- Department of Medicine, Surgery and Health Science, University of Trieste, Trieste, Italy
| | - Thibaud Boutin
- Medical Research Council Human Genetics Unit, Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, UK
| | - Ivana Kolcic
- University of Split School of Medicine, Split, Croatia
| | - Ozren Polasek
- University of Split School of Medicine, Split, Croatia
- Clinical Hospital Centre Split, Split, Croatia
- Psychiatric Hospital Sveti Ivan, Zagreb, Croatia
| | - Igor Rudan
- Centre for Global Health Research, Usher Institute of Population Health Sciences and Informatics, University of Edinburgh, Edinburgh, UK
| | - Nathalia M Araujo
- Departamento de Biologia Geral, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | | | - Antonio Luiz P Ribeiro
- Hospital das Clínicas e Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Renan P Souza
- Departamento de Biologia Geral, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Eduardo Tarazona-Santos
- Departamento de Biologia Geral, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | | | - Erik Ingelsson
- Department of Medicine, Division of Cardiovascular Medicine, Stanford University School of Medicine, Stanford, CA, USA
- Stanford Cardiovascular Institute, Stanford University, Stanford, CA, USA
- Stanford Diabetes Research Center, Stanford University, Stanford, CA, USA
- Department of Medical Sciences, Molecular Epidemiology and Science for Life Laboratory, Uppsala University, Uppsala, Sweden
| | - Anubha Mahajan
- Wellcome Centre for Human Genetics, University of Oxford, Oxford, UK
| | - Andrew P Morris
- Wellcome Centre for Human Genetics, University of Oxford, Oxford, UK
- Department of Biostatistics, University of Liverpool, Liverpool, UK
- Division of Musculoskeletal and Dermatological Sciences, University of Manchester, Manchester, UK
| | - Fabiola Del Greco M
- Institute for Biomedicine, Eurac Research, Affiliated Institute of the University of Lübeck, Bolzano, Italy
| | - Luisa Foco
- Institute for Biomedicine, Eurac Research, Affiliated Institute of the University of Lübeck, Bolzano, Italy
| | - Martin Gögele
- Institute for Biomedicine, Eurac Research, Affiliated Institute of the University of Lübeck, Bolzano, Italy
| | - Andrew A Hicks
- Institute for Biomedicine, Eurac Research, Affiliated Institute of the University of Lübeck, Bolzano, Italy
| | - James P Cook
- Department of Biostatistics, University of Liverpool, Liverpool, UK
| | - Lars Lind
- Medical Sciences, Uppsala University Hospital, Uppsala, Sweden
| | - Cecilia M Lindgren
- Nuffield Department of Medicine, Li Ka Shing Centre for Health Information and Discovery, Big Data Institute, University of Oxford, Oxford, UK
- Nuffield Department of Medicine, The Wellcome Centre for Human Genetics, University of Oxford, Oxford, UK
- The Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - Johan Sundström
- Department of Medical Sciences, Uppsala University, Uppsala, Sweden
| | - Christopher P Nelson
- Department of Cardiovascular Sciences, Cardiovascular Research Centre, Glenfield Hospital, University of Leicester, Leicester, UK
- NIHR Leicester Biomedical Research Centre, Glenfield Hospital, Groby Road, Leicester, UK
| | - Muhammad B Riaz
- Department of Cardiovascular Sciences, Cardiovascular Research Centre, Glenfield Hospital, University of Leicester, Leicester, UK
- NIHR Leicester Biomedical Research Centre, Glenfield Hospital, Groby Road, Leicester, UK
| | - Nilesh J Samani
- Department of Cardiovascular Sciences, Cardiovascular Research Centre, Glenfield Hospital, University of Leicester, Leicester, UK
- NIHR Leicester Biomedical Research Centre, Glenfield Hospital, Groby Road, Leicester, UK
| | - Gianfranco Sinagra
- Cardiovascular Department, Azienda Ospedaliera Universitaria Integrata of Trieste, Trieste, Italy
| | - Sheila Ulivi
- Institute for Maternal and Child Health-IRCCS 'Burlo Garofolo', Trieste, Italy
| | - Mika Kähönen
- Department of Clinical Physiology, Tampere University Hospital, Tampere, Finland
- Department of Clinical Physiology, Faculty of Medicine and Health Technology, Finnish Cardiovascular Research Center Tampere University, Tampere, Finland
| | - Pashupati P Mishra
- Department of Clinical Chemistry, Fimlab Laboratories, Tampere, Finland
- Department of Clinical Chemistry, Faculty of Medicine and Health Technology, Finnish Cardiovascular Research Center, Tampere University, Tampere, Finland
| | - Nina Mononen
- Department of Clinical Chemistry, Fimlab Laboratories, Tampere, Finland
- Department of Clinical Chemistry, Faculty of Medicine and Health Technology, Finnish Cardiovascular Research Center, Tampere University, Tampere, Finland
| | - Kjell Nikus
- Department of Cardiology, Heart Center, Tampere University Hospital, Tampere, Finland
- Department of Cardiology, Finnish Cardiovascular Research Center, Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
| | - Mark J Caulfield
- William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
- National Institute for Health Research, Barts Cardiovascular Biomedical Research Centre, Queen Mary University of London, London, UK
| | - Anna Dominiczak
- Institute of Cardiovascular and Medical Sciences, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK
| | - Sandosh Padmanabhan
- Institute of Cardiovascular and Medical Sciences, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK
- Institute of Cardiovascular and Medical Sciences, University of Glasgow, Glasgow, UK
| | - May E Montasser
- Division of Endocrinology, Diabetes, and Nutrition, University of Maryland School of Medicine, Baltimore, MD, USA
- Program for Personalized and Genomic Medicine, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Jeff R O'Connell
- Division of Endocrinology, Diabetes, and Nutrition, University of Maryland School of Medicine, Baltimore, MD, USA
- Program for Personalized and Genomic Medicine, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Kathleen Ryan
- Division of Endocrinology, Diabetes, and Nutrition, University of Maryland School of Medicine, Baltimore, MD, USA
- Program for Personalized and Genomic Medicine, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Alan R Shuldiner
- Division of Endocrinology, Diabetes, and Nutrition, University of Maryland School of Medicine, Baltimore, MD, USA
- Program for Personalized and Genomic Medicine, University of Maryland School of Medicine, Baltimore, MD, USA
| | | | - David Conen
- Cardiology Division, University Hospital, Basel, Switzerland
- Population Health Research Institute, McMaster University, Hamilton, ON, Canada
| | - Lorenz Risch
- Institute of Clinical Chemistry, Inselspital Bern, University Hospital, University of Bern, Bern, Switzerland
- Labormedizinisches Zentrum Dr. Risch, Vaduz, Liechtenstein
- Private University of the Principality of Liechtenstein, Triesen, Liechtenstein
| | - Sébastien Thériault
- Population Health Research Institute, McMaster University, Hamilton, ON, Canada
- Department of Molecular Biology, Medical Biochemistry and Pathology, Laval University, Quebec, QC, Canada
| | - Nina Hutri-Kähönen
- Department of Pediatrics, Tampere University Hospital, Tampere, Finland
- Department of Pediatrics, Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
| | - Terho Lehtimäki
- Department of Clinical Chemistry, Fimlab Laboratories, Tampere, Finland
- Department of Clinical Chemistry, Faculty of Medicine and Health Technology, Finnish Cardiovascular Research Center, Tampere University, Tampere, Finland
| | - Leo-Pekka Lyytikäinen
- Department of Clinical Chemistry, Fimlab Laboratories, Tampere, Finland
- Department of Clinical Chemistry, Faculty of Medicine and Health Technology, Finnish Cardiovascular Research Center, Tampere University, Tampere, Finland
- Department of Cardiology, Heart Center, Tampere University Hospital, Tampere, Finland
| | - Olli T Raitakari
- Department of Clinical Physiology and Nuclear Medicine, Turku University Hospital, Turku, Finland
- Research Centre of Applied and Preventive Cardiovascular Medicine, University of Turku, Turku, Finland
- Centre for Population Health Research, University of Turku and Turku University Hospital, Turku, Finland
| | - Catriona L K Barnes
- Centre for Global Health Research, Usher Institute of Population Health Sciences and Informatics, University of Edinburgh, Edinburgh, UK
| | - Harry Campbell
- Centre for Global Health Research, Usher Institute of Population Health Sciences and Informatics, University of Edinburgh, Edinburgh, UK
| | - Peter K Joshi
- Centre for Global Health Research, Usher Institute of Population Health Sciences and Informatics, University of Edinburgh, Edinburgh, UK
| | - James F Wilson
- Medical Research Council Human Genetics Unit, Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, UK
- Centre for Global Health Research, Usher Institute of Population Health Sciences and Informatics, University of Edinburgh, Edinburgh, UK
| | - Aaron Isaacs
- CARIM School for Cardiovascular Diseases, Maastricht Center for Systems Biology (MaCSBio), Department of Biochemistry, and Department of Physiology, Maastricht University, Maastricht, The Netherlands
| | - Jan A Kors
- Department of Medical Informatics Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Cornelia M van Duijn
- Genetic Epidemiology Unit, Department of Epidemiology, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Paul L Huang
- Cardiovascular Research Center, Massachusetts General Hospital, Boston, MA, USA
| | - Vilmundur Gudnason
- Icelandic Heart Association, Kopavogur, Iceland
- Faculty of Medicine, University of Iceland, Reykjavik, Iceland
| | - Tamara B Harris
- Laboratory of Epidemiology and Population Sciences, National Institute on Aging, NIH, Baltimore, MD, USA
| | - Lenore J Launer
- Laboratory of Epidemiology and Population Sciences, National Institute on Aging, NIH, Baltimore, MD, USA
| | - Albert V Smith
- Icelandic Heart Association, Kopavogur, Iceland
- School of Public Health, Department of Biostatistics, University of Michigan, Ann Arbor, MI, USA
| | - Erwin P Bottinger
- The Charles Bronfman Institute for Personalized Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Ruth J F Loos
- The Charles Bronfman Institute for Personalized Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- The Mindich Child Health and Development Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Girish N Nadkarni
- The Charles Bronfman Institute for Personalized Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Michael H Preuss
- The Charles Bronfman Institute for Personalized Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Adolfo Correa
- Jackson Heart Study, Department of Medicine, University of Mississippi Medical Center, Jackson, MS, USA
| | - Hao Mei
- Department of Data Science, University of Mississippi Medical Center, Jackson, MS, USA
| | - James Wilson
- Department of Physiology and Biophysics, University of Mississippi Medical Center, Jackson, MS, USA
| | - Thomas Meitinger
- DZHK (German Centre for Cardiovascular Research), Munich Heart Alliance, Munich, Germany
- Institute of Human Genetics, Helmholtz Zentrum München - German Research Center for Environmental Health, Neuherberg, Germany
- Institute of Human Genetics, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - Martina Müller-Nurasyid
- DZHK (German Centre for Cardiovascular Research), Munich Heart Alliance, Munich, Germany
- Institute of Genetic Epidemiology, Helmholtz Zentrum München - German Research Center for Environmental Health, Neuherberg, Germany
- IBE, Faculty of Medicine, LMU Munich, Munich, Germany
- Department of Internal Medicine I (Cardiology), Hospital of the Ludwig-Maximilians-University (LMU) Munich, Munich, Germany
| | - Annette Peters
- DZHK (German Centre for Cardiovascular Research), Munich Heart Alliance, Munich, Germany
- German Center for Diabetes Research, Neuherberg, Germany
- Institute of Epidemiology, Helmholtz Zentrum München-German Research Center for Environmental Health, Neuherberg, Germany
| | - Melanie Waldenberger
- DZHK (German Centre for Cardiovascular Research), Munich Heart Alliance, Munich, Germany
- Institute of Epidemiology, Helmholtz Zentrum München-German Research Center for Environmental Health, Neuherberg, Germany
- Research Unit of Molecular Epidemiology, Helmholtz Zentrum München-German Research Center for Environmental Health, Neuherberg, Germany
| | - Massimo Mangino
- Department of Twin Research and Genetic Epidemiology, Kings College London, London, UK
- NIHR Biomedical Research Centre at Guy's and St Thomas' Foundation Trust, London, UK
| | - Timothy D Spector
- Department of Twin Research and Genetic Epidemiology, Kings College London, London, UK
| | - Michiel Rienstra
- Department of Cardiology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Yordi J van de Vegte
- Department of Cardiology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Pim van der Harst
- Department of Cardiology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Niek Verweij
- Department of Cardiology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
- Genomics plc, Oxford, UK
| | - Stefan Kääb
- DZHK (German Centre for Cardiovascular Research), Munich Heart Alliance, Munich, Germany
- Department of Internal Medicine I (Cardiology), Hospital of the Ludwig-Maximilians-University (LMU) Munich, Munich, Germany
| | - Katharina Schramm
- DZHK (German Centre for Cardiovascular Research), Munich Heart Alliance, Munich, Germany
- Institute of Genetic Epidemiology, Helmholtz Zentrum München - German Research Center for Environmental Health, Neuherberg, Germany
- Department of Internal Medicine I (Cardiology), Hospital of the Ludwig-Maximilians-University (LMU) Munich, Munich, Germany
| | - Moritz F Sinner
- DZHK (German Centre for Cardiovascular Research), Munich Heart Alliance, Munich, Germany
- Department of Internal Medicine I (Cardiology), Hospital of the Ludwig-Maximilians-University (LMU) Munich, Munich, Germany
| | - Konstantin Strauch
- Institute of Genetic Epidemiology, Helmholtz Zentrum München - German Research Center for Environmental Health, Neuherberg, Germany
- IBE, Faculty of Medicine, LMU Munich, Munich, Germany
| | - Michael J Cutler
- Intermountain Heart Institute, Intermountain Medical Center, Murray, UT, USA
| | - Diane Fatkin
- Molecular Cardiology and Biophysics Division, Victor Chang Cardiac Research Institute, Darlinghurst, NSW, Australia
- Cardiology Department, St. Vincent's Hospital, Darlinghurst, NSW, Australia
- St Vincent's Clinical School, Faculty of Medicine, UNSW Sydney, Kensington, NSW, Australia
| | - Barry London
- Department of Cardiovascular Medicine, University of Iowa, Iowa City, IA, USA
| | - Morten Olesen
- Laboratory for Molecular Cardiology, Department of Cardiology, The Heart Centre, Rigshospitalet, University Hospital of Copenhagen, Copenhagen, Denmark
- Department of Biomedical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Dan M Roden
- Departments of Medicine, Pharmacology, and Biomedical Informatics, Vanderbilt University Medical Center, Nashville, TN, USA
| | - M Benjamin Shoemaker
- Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - J Gustav Smith
- Department of Cardiology, Clinical Sciences, Wallenberg Center for Molecular Medicine, Lund University Diabetes Center, Lund University and Skane University Hospital, Lund, Sweden
| | - Mary L Biggs
- Cardiovascular Health Research Unit, Department of Medicine, University of Washington, Seattle, WA, USA
- Department of Biostatistics, University of Washington, Seattle, WA, USA
| | - Joshua C Bis
- Cardiovascular Health Research Unit, Department of Medicine, University of Washington, Seattle, WA, USA
| | - Jennifer A Brody
- Cardiovascular Health Research Unit, Department of Medicine, University of Washington, Seattle, WA, USA
| | - Bruce M Psaty
- Cardiovascular Health Research Unit, Department of Medicine, University of Washington, Seattle, WA, USA
- Department of Epidemiology, University of Washington, Seattle, WA, USA
- Kaiser Permanente Washington Health Research Institute, Seattle, WA, USA
| | - Kenneth Rice
- Department of Biostatistics, University of Washington, Seattle, WA, USA
| | - Nona Sotoodehnia
- Cardiovascular Health Research Unit, Department of Medicine, University of Washington, Seattle, WA, USA
- Department of Epidemiology, University of Washington, Seattle, WA, USA
- Cardiology Division, University of Washington, Seattle, WA, USA
| | - Alessandro De Grandi
- Institute for Biomedicine, Eurac Research, Affiliated Institute of the University of Lübeck, Bolzano, Italy
| | - Christian Fuchsberger
- Institute for Biomedicine, Eurac Research, Affiliated Institute of the University of Lübeck, Bolzano, Italy
| | - Cristian Pattaro
- Institute for Biomedicine, Eurac Research, Affiliated Institute of the University of Lübeck, Bolzano, Italy
| | - Peter P Pramstaller
- Institute for Biomedicine, Eurac Research, Affiliated Institute of the University of Lübeck, Bolzano, Italy
| | - Ian Ford
- Robertson Center for Biostatistics, University of Glasgow, Glasgow, UK
| | - J Wouter Jukema
- Department of Cardiology, Leiden University Medical Center, Leiden, The Netherlands
- Einthoven Laboratory for Experimental Vascular Medicine, Leiden University Medical Center, Leiden, The Netherlands
| | - Peter W Macfarlane
- Institute of Health and Wellbeing, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK
| | - Stella Trompet
- Department of Internal Medicine, section of Gerontology and Geriatrics, Leiden University Medical Center, Leiden, The Netherlands
| | - Marcus Dörr
- DZHK (German Centre for Cardiovascular Research), Greifswald, Germany
- Department of Internal Medicine B - Cardiology, Pneumology, Infectious Diseases, Intensive Care Medicine, University Medicine Greifswald, Greifswald, Germany
| | - Stephan B Felix
- DZHK (German Centre for Cardiovascular Research), Greifswald, Germany
- Department of Internal Medicine B - Cardiology, Pneumology, Infectious Diseases, Intensive Care Medicine, University Medicine Greifswald, Greifswald, Germany
| | - Uwe Völker
- DZHK (German Centre for Cardiovascular Research), Greifswald, Germany
- Interfaculty Institute for Genetics and Functional Genomics; Department of Functional Genomics; University Medicine and University of Greifswald, Greifswald, Germany
| | - Stefan Weiss
- DZHK (German Centre for Cardiovascular Research), Greifswald, Germany
- Interfaculty Institute for Genetics and Functional Genomics; Department of Functional Genomics; University Medicine and University of Greifswald, Greifswald, Germany
| | - Aki S Havulinna
- Finnish Institute for Health and Welfare, Helsinki, Finland
- Institute for Molecular Medicine Finland (FIMM), HiLIFE, University of Helsinki, Helsinki, Finland
| | - Antti Jula
- Finnish Institute for Health and Welfare, Helsinki, Finland
| | | | - Veikko Salomaa
- Finnish Institute for Health and Welfare, Helsinki, Finland
| | - Xiuqing Guo
- Institute for Translational Genomics and Population Sciences and Department of Pediatrics, Los Angeles Biomedical Research Institute at Harbor-UCLA Medical Center, Torrance, CA, USA
| | - Susan R Heckbert
- Cardiovascular Health Research Unit and Department of Epidemiology, University of Washington, Seattle, WA, USA
| | - Henry J Lin
- Institute for Translational Genomics and Population Sciences and Department of Pediatrics, Los Angeles Biomedical Research Institute at Harbor-UCLA Medical Center, Torrance, CA, USA
| | - Jerome I Rotter
- Institute for Translational Genomics and Population Sciences and Department of Pediatrics, Los Angeles Biomedical Research Institute at Harbor-UCLA Medical Center, Torrance, CA, USA
| | - Kent D Taylor
- Institute for Translational Genomics and Population Sciences and Department of Pediatrics, Los Angeles Biomedical Research Institute at Harbor-UCLA Medical Center, Torrance, CA, USA
| | - Jie Yao
- Institute for Translational Genomics and Population Sciences, Los Angeles Biomedical Research Institute at Harbor-UCLA Medical Center, Torrance, CA, USA
| | - Renée de Mutsert
- Department of Clinical Epidemiology, Leiden University Medical Center, Leiden, The Netherlands
| | - Arie C Maan
- Department of Cardiology, Leiden University Medical Center, Leiden, The Netherlands
| | - Dennis O Mook-Kanamori
- Department of Clinical Epidemiology, Leiden University Medical Center, Leiden, The Netherlands
- Department of Public Health and Primary Care, Leiden University Medical Center, Leiden, The Netherlands
| | - Raymond Noordam
- Department of Internal Medicine, section of Gerontology and Geriatrics, Leiden University Medical Center, Leiden, The Netherlands
| | - Francesco Cucca
- Department of Biomedical Sciences, University of Sassari, Sassari, Italy
| | - Jun Ding
- Laboratory of Genetics and Genomics, NIA/NIH, Baltimore, MD, USA
| | - Edward G Lakatta
- Laboratory of Cardiovascular Science, NIA/NIH, Baltimore, MD, USA
| | - Yong Qian
- Laboratory of Genetics and Genomics, NIA/NIH, Baltimore, MD, USA
| | - Kirill V Tarasov
- Laboratory of Cardiovascular Science, NIA/NIH, Baltimore, MD, USA
| | - Daniel Levy
- Population Sciences Branch, Division of Intramural Research, National Heart, Lung, and Blood Institute, Bethesda, MD, USA
- National Heart Lung and Blood Institute's and Boston University's Framingham Heart Study, Framingham, MA, USA
| | - Honghuang Lin
- National Heart Lung and Blood Institute's and Boston University's Framingham Heart Study, Framingham, MA, USA
- Section of Computational Biomedicine, Department of Medicine, Boston University School of Medicine, Boston, MA, USA
| | - Christopher H Newton-Cheh
- Program in Medical and Population Genetics, The Broad Institute of MIT and Harvard, Cambridge, MA, USA
- Center for Human Genetic Research and Cardiovascular Research Center, Harvard Medical School and Massachusetts General Hospital, Boston, MA, USA
| | - Kathryn L Lunetta
- National Heart Lung and Blood Institute's and Boston University's Framingham Heart Study, Framingham, MA, USA
- Department of Biostatistics, Boston University School of Public Health, Boston, MA, USA
| | - Alison D Murray
- The Institute of Medical Sciences, Aberdeen Biomedical Imaging Centre, University of Aberdeen, Aberdeen, UK
| | - David J Porteous
- Centre for Genomic and Experimental Medicine, Institute of Genetics & Molecular Medicine, University of Edinburgh, Western General Hospital, Edinburgh, UK
- Centre for Cognitive Ageing and Cognitive Epidemiology, University of Edinburgh, Edinburgh, UK
| | - Blair H Smith
- Division of Population Health and Genomics, Ninewells Hospital and Medical School, University of Dundee, Dundee, UK
| | - Bruno H Stricker
- Department of Epidemiology Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - André Uitterlinden
- Human Genotyping Facility Erasmus MC University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Marten E van den Berg
- Department of Epidemiology Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Jeffrey Haessler
- Fred Hutchinson Cancer Research Center, Division of Public Health Sciences, Seattle, WA, USA
| | - Rebecca D Jackson
- Division of Endocrinology, Diabetes and Metabolism, Ohio State University, Columbus, OH, USA
| | - Charles Kooperberg
- Fred Hutchinson Cancer Research Center, Division of Public Health Sciences, Seattle, WA, USA
| | - Ulrike Peters
- Fred Hutchinson Cancer Research Center, Division of Public Health Sciences, Seattle, WA, USA
| | - Alexander P Reiner
- Fred Hutchinson Cancer Research Center, Division of Public Health Sciences, Seattle, WA, USA
- Department of Epidemiology, University of Washington, Seattle, WA, USA
| | - Eric A Whitsel
- Departments of Epidemiology and Medicine, Gillings School of Global Public Health and School of Medicine, University of North Carolina, Chapel Hill, NC, USA
| | - Alvaro Alonso
- Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, GA, USA
| | - Dan E Arking
- McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Eric Boerwinkle
- Human Genetics Center, University of Texas Health Science Center at Houston, Houston, TX, USA
| | - Georg B Ehret
- Cardiology, Geneva University Hospitals, Geneva, Switzerland
| | - Elsayed Z Soliman
- Epidemiological Cardiology Research Center, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - Christy L Avery
- Department of Epidemiology, University of North Carolina, Chapel Hill, NC, USA
- Carolina Population Center, University of North Carolina, Chapel Hill, NC, USA
| | | | - Kathleen F Kerr
- Department of Biostatistics, University of Washington, Seattle, WA, USA
| | - Cathy C Laurie
- Department of Biostatistics, University of Washington, Seattle, WA, USA
| | - Amanda A Seyerle
- Division of Pharmaceutical Outcomes and Policy, University of North Carolina, Chapel Hill, NC, USA
| | - Adrienne Stilp
- Department of Biostatistics, University of Washington, Seattle, WA, USA
| | - Solmaz Assa
- Department of Cardiology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - M Abdullah Said
- Department of Cardiology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - M Yldau van der Ende
- Department of Cardiology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Pier D Lambiase
- Barts Heart Centre, St Bartholomews Hospital, London, UK
- Institute of Cardiovascular Science, University College London, London, UK
| | - Michele Orini
- Barts Heart Centre, St Bartholomews Hospital, London, UK
- Department of Mechanical Engineering, University College London, London, UK
| | - Julia Ramirez
- William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
- Institute of Cardiovascular Science, University College London, London, UK
| | - Stefan Van Duijvenboden
- William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
- Institute of Cardiovascular Science, University College London, London, UK
| | - David O Arnar
- deCODE genetics/Amgen, Inc., Reykjavik, Iceland
- Faculty of Medicine, University of Iceland, Reykjavik, Iceland
- Department of Medicine, Landspitali University Hospital, Reykjavik, Iceland
| | - Daniel F Gudbjartsson
- deCODE genetics/Amgen, Inc., Reykjavik, Iceland
- School of Engineering and Natural Sciences, University of Iceland, Reykjavik, Iceland
| | - Hilma Holm
- deCODE genetics/Amgen, Inc., Reykjavik, Iceland
| | | | | | - Rosa B Thorolfsdottir
- deCODE genetics/Amgen, Inc., Reykjavik, Iceland
- Faculty of Medicine, University of Iceland, Reykjavik, Iceland
| | - Unnur Thorsteinsdottir
- deCODE genetics/Amgen, Inc., Reykjavik, Iceland
- Faculty of Medicine, University of Iceland, Reykjavik, Iceland
| | - Emelia J Benjamin
- National Heart Lung and Blood Institute's and Boston University's Framingham Heart Study, Framingham, MA, USA
- Section of Cardiovascular Medicine and Section of Preventive Medicine, Department of Medicine, Boston University School of Medicine, Boston, MA, USA
- Department of Epidemiology, Boston University School of Public Health, Boston, MA, USA
| | - Andrew Tinker
- William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
- National Institute for Health Research, Barts Cardiovascular Biomedical Research Centre, Queen Mary University of London, London, UK
| | - Kari Stefansson
- deCODE genetics/Amgen, Inc., Reykjavik, Iceland
- Faculty of Medicine, University of Iceland, Reykjavik, Iceland
| | - Patrick T Ellinor
- Cardiovascular Research Center, Massachusetts General Hospital, Boston, MA, USA
- Program in Medical and Population Genetics, The Broad Institute of MIT and Harvard, Cambridge, MA, USA
- Cardiac Arrhythmia Service, Massachusetts General Hospital, Boston, MA, USA
| | - Yalda Jamshidi
- Genetics Research Centre, Molecular and Clinical Sciences Institute, St George's, University of London, London, UK
| | - Steven A Lubitz
- Cardiovascular Research Center, Massachusetts General Hospital, Boston, MA, USA.
- Program in Medical and Population Genetics, The Broad Institute of MIT and Harvard, Cambridge, MA, USA.
- Cardiac Arrhythmia Service, Massachusetts General Hospital, Boston, MA, USA.
| | - Patricia B Munroe
- William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK.
- National Institute for Health Research, Barts Cardiovascular Biomedical Research Centre, Queen Mary University of London, London, UK.
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12
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Teumer A, Trenkwalder T, Kessler T, Jamshidi Y, van den Berg ME, Kaess B, Nelson CP, Bastiaenen R, De Bortoli M, Rossini A, Deisenhofer I, Stark K, Assa S, Braund PS, Cabrera C, Dominiczak AF, Gögele M, Hall LM, Ikram MA, Kavousi M, Lackner KJ, Müller C, Münzel T, Nauck M, Padmanabhan S, Pfeiffer N, Spector TD, Uitterlinden AG, Verweij N, Völker U, Warren HR, Zafar M, Felix SB, Kors JA, Snieder H, Munroe PB, Pattaro C, Fuchsberger C, Schmidt G, Nolte IM, Schunkert H, Pramstaller PP, Wild PS, van der Harst P, Stricker BH, Schnabel RB, Samani NJ, Hengstenberg C, Dörr M, Behr ER, Reinhard W. KCND3 potassium channel gene variant confers susceptibility to electrocardiographic early repolarization pattern. JCI Insight 2019; 4:131156. [PMID: 31600170 PMCID: PMC6962032 DOI: 10.1172/jci.insight.131156] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Accepted: 10/08/2019] [Indexed: 12/19/2022] Open
Abstract
BACKGROUNDThe presence of an early repolarization pattern (ERP) on the surface ECG is associated with risk of ventricular fibrillation and sudden cardiac death. Family studies have shown that ERP is a highly heritable trait, but molecular genetic determinants are unknown.METHODSTo identify genetic susceptibility loci for ERP, we performed a GWAS and meta-analysis in 2,181 cases and 23,641 controls of European ancestry.RESULTSWe identified a genome-wide significant (P < 5 × 10-8) locus in the potassium voltage-gated channel subfamily D member 3 (KCND3) gene that was successfully replicated in additional 1,124 cases and 12,510 controls. A subsequent joint meta-analysis of the discovery and replication cohorts identified rs1545300 as the lead SNP at the KCND3 locus (OR 0.82 per minor T allele, P = 7.7 × 10-12) but did not reveal additional loci. Colocalization analyses indicate causal effects of KCND3 gene expression levels on ERP in both cardiac left ventricle and tibial artery.CONCLUSIONSIn this study, we identified for the first time to our knowledge a genome-wide significant association of a genetic variant with ERP. Our findings of a locus in the KCND3 gene provide insights not only into the genetic determinants but also into the pathophysiological mechanism of ERP, discovering a promising candidate for functional studies.FUNDINGThis project was funded by the German Center for Cardiovascular Research (DZHK Shared Expertise SE081 - STATS). For detailed funding information per study, see the Supplemental Acknowledgments.
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Affiliation(s)
- Alexander Teumer
- Institute for Community Medicine, University Medicine Greifswald, Greifswald, Germany.,German Center for Cardiovascular Research (DZHK), partner site Greifswald, Greifswald, Germany
| | - Teresa Trenkwalder
- Klinik für Herz-und Kreislauferkrankungen, Deutsches Herzzentrum München, School of Medicine, Technical University of Munich, Munich, Germany
| | - Thorsten Kessler
- Klinik für Herz-und Kreislauferkrankungen, Deutsches Herzzentrum München, School of Medicine, Technical University of Munich, Munich, Germany
| | - Yalda Jamshidi
- Genetics Research Centre, Institute of Molecular and Clinical Sciences, Saint George's University of London, London, United Kingdom
| | - Marten E van den Berg
- Department of Epidemiology, Erasmus MC University Medical Center Rotterdam, Rotterdam, Netherlands
| | - Bernhard Kaess
- Medizinische Klinik I, St. Josefs-Hospital, Wiesbaden, Germany
| | - Christopher P Nelson
- Department of Cardiovascular Sciences, BHF Cardiovascular Research Centre, Leicester, United Kingdom.,National Institute for Health Research (NIHR) Leicester Biomedical Research Centre, University of Leicester, Leicester, United Kingdom
| | - Rachel Bastiaenen
- Cardiology Clinical Academic Group, Institute of Molecular and Clinical Sciences, Saint George's, University of London, London, United Kingdom
| | - Marzia De Bortoli
- Eurac Research, Institute for Biomedicine, affiliated with the University of Lübeck, Bolzano, Italy
| | - Alessandra Rossini
- Eurac Research, Institute for Biomedicine, affiliated with the University of Lübeck, Bolzano, Italy
| | - Isabel Deisenhofer
- Klinik für Herz-und Kreislauferkrankungen, Deutsches Herzzentrum München, School of Medicine, Technical University of Munich, Munich, Germany
| | - Klaus Stark
- Department of Genetic Epidemiology, University Regensburg, Regensburg, Germany
| | - Solmaz Assa
- Department of Cardiology, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
| | - Peter S Braund
- Department of Cardiovascular Sciences, BHF Cardiovascular Research Centre, Leicester, United Kingdom.,National Institute for Health Research (NIHR) Leicester Biomedical Research Centre, University of Leicester, Leicester, United Kingdom
| | - Claudia Cabrera
- Clinical Pharmacology, William Harvey Research Institute, and.,NIHR Barts Cardiovascular Biomedical Research Centre, Barts and The London School of Medicine, Queen Mary University of London, London, United Kingdom.,Centre for Translational Bioinformatics, William Harvey Research Institute, Barts and the London, London, United Kingdom, and School of Medicine and Dentistry, Charterhouse Square, London, United Kingdom
| | - Anna F Dominiczak
- Institute of Cardiovascular and Medical Sciences, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, Scotland, United Kingdom
| | - Martin Gögele
- Eurac Research, Institute for Biomedicine, affiliated with the University of Lübeck, Bolzano, Italy
| | - Leanne M Hall
- Department of Cardiovascular Sciences, BHF Cardiovascular Research Centre, Leicester, United Kingdom.,National Institute for Health Research (NIHR) Leicester Biomedical Research Centre, University of Leicester, Leicester, United Kingdom
| | - M Arfan Ikram
- Department of Epidemiology, Erasmus MC University Medical Center Rotterdam, Rotterdam, Netherlands
| | - Maryam Kavousi
- Department of Epidemiology, Erasmus MC University Medical Center Rotterdam, Rotterdam, Netherlands
| | - Karl J Lackner
- Institute of Clinical Chemistry and Laboratory Medicine, University Medical Center of the Johannes Gutenberg, University Mainz, Mainz, Germany.,DZHK, partner site Rhine-Main, Mainz, Germany
| | | | - Christian Müller
- University Heart & Vascular Center Hamburg, Hamburg, Germany.,DZHK, partner site Hamburg/Kiel/Lübeck, Hamburg, Germany
| | - Thomas Münzel
- DZHK, partner site Rhine-Main, Mainz, Germany.,Cardiology I, Center for Cardiology, University Medical Center of the Johannes Gutenberg, University Mainz, Mainz, Germany
| | - Matthias Nauck
- German Center for Cardiovascular Research (DZHK), partner site Greifswald, Greifswald, Germany.,Institute of Clinical Chemistry and Laboratory Medicine, University Medicine Greifswald, Greifswald, Germany
| | - Sandosh Padmanabhan
- Institute of Cardiovascular and Medical Sciences, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, Scotland, United Kingdom
| | - Norbert Pfeiffer
- Department of Ophthalmology, University Medical Center of the Johannes Gutenberg, University Mainz, Mainz, Germany
| | - Tim D Spector
- Department of Twin Research and Genetic Epidemiology, King's College London, London, United Kingdom
| | - Andre G Uitterlinden
- Department of Epidemiology, Erasmus MC University Medical Center Rotterdam, Rotterdam, Netherlands
| | - Niek Verweij
- Department of Cardiology, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
| | - Uwe Völker
- German Center for Cardiovascular Research (DZHK), partner site Greifswald, Greifswald, Germany.,Interfaculty Institute for Genetics and Functional Genomics and
| | - Helen R Warren
- Clinical Pharmacology, William Harvey Research Institute, and.,NIHR Barts Cardiovascular Biomedical Research Centre, Barts and The London School of Medicine, Queen Mary University of London, London, United Kingdom
| | - Mobeen Zafar
- Department of Cardiology, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
| | - Stephan B Felix
- German Center for Cardiovascular Research (DZHK), partner site Greifswald, Greifswald, Germany.,Department of Internal Medicine B, University Medicine Greifswald, Greifswald, Germany
| | - Jan A Kors
- Department of Medical Informatics, Erasmus MC University Medical Center Rotterdam, Rotterdam, Netherlands
| | - Harold Snieder
- Department of Epidemiology, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
| | - Patricia B Munroe
- Clinical Pharmacology, William Harvey Research Institute, and.,NIHR Barts Cardiovascular Biomedical Research Centre, Barts and The London School of Medicine, Queen Mary University of London, London, United Kingdom
| | - Cristian Pattaro
- Eurac Research, Institute for Biomedicine, affiliated with the University of Lübeck, Bolzano, Italy
| | - Christian Fuchsberger
- Eurac Research, Institute for Biomedicine, affiliated with the University of Lübeck, Bolzano, Italy
| | - Georg Schmidt
- Innere Medizin I, Klinikum rechts der Isar, Technical University Munich, Munich, Germany.,DZHK, partner site Munich Heart Alliance, Munich, Germany
| | - Ilja M Nolte
- Department of Epidemiology, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
| | - Heribert Schunkert
- Klinik für Herz-und Kreislauferkrankungen, Deutsches Herzzentrum München, School of Medicine, Technical University of Munich, Munich, Germany.,DZHK, partner site Munich Heart Alliance, Munich, Germany
| | - Peter P Pramstaller
- Eurac Research, Institute for Biomedicine, affiliated with the University of Lübeck, Bolzano, Italy
| | - Philipp S Wild
- DZHK, partner site Rhine-Main, Mainz, Germany.,Preventive Cardiology and Preventive Medicine, Center for Cardiology, University Medical Center of the Johannes Gutenberg, University Mainz, Mainz, Germany.,Center for Thrombosis and Hemostasis, University Medical Center of the Johannes Gutenberg, University Mainz, Mainz, Germany
| | - Pim van der Harst
- Department of Cardiology, University of Groningen, University Medical Center Groningen, Groningen, Netherlands.,Department of Cardiology, Division of Heart and Lungs, University Medical Center Utrecht, Utrecht, Netherlands
| | - Bruno H Stricker
- Department of Epidemiology, Erasmus MC University Medical Center Rotterdam, Rotterdam, Netherlands
| | - Renate B Schnabel
- University Heart & Vascular Center Hamburg, Hamburg, Germany.,DZHK, partner site Hamburg/Kiel/Lübeck, Hamburg, Germany
| | - Nilesh J Samani
- Department of Cardiovascular Sciences, BHF Cardiovascular Research Centre, Leicester, United Kingdom.,National Institute for Health Research (NIHR) Leicester Biomedical Research Centre, University of Leicester, Leicester, United Kingdom
| | - Christian Hengstenberg
- Division of Cardiology, Department of Internal Medicine II, Medical University of Vienna, Vienna, Austria
| | - Marcus Dörr
- German Center for Cardiovascular Research (DZHK), partner site Greifswald, Greifswald, Germany.,Department of Internal Medicine B, University Medicine Greifswald, Greifswald, Germany
| | - Elijah R Behr
- Cardiology Clinical Academic Group, Institute of Molecular and Clinical Sciences, Saint George's University of London, London, United Kingdom.,Saint George's University Hospitals NHS Foundation Trust, London, United Kingdom
| | - Wibke Reinhard
- Klinik für Herz-und Kreislauferkrankungen, Deutsches Herzzentrum München, School of Medicine, Technical University of Munich, Munich, Germany
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Koch J, Idzerda NMA, Dam W, Assa S, Franssen CFM, van den Born J. Plasma syndecan-1 in hemodialysis patients associates with survival and lower markers of volume status. Am J Physiol Renal Physiol 2019; 316:F121-F127. [DOI: 10.1152/ajprenal.00252.2018] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Syndecan-1, a transmembrane heparan sulfate proteoglycan, associates with renal and cardiovascular functioning. We earlier reported syndecan-1 to be involved in renal tubular regeneration. We now examined plasma values of syndecan-1 in a hemodialysis cohort and its association with volume and inflammatory and endothelial markers in addition to outcome. Eighty-four prevalent hemodialysis patients were evaluated for their plasma syndecan-1 levels by ELISA before the start of hemodialysis, as well as 60, 180, and 240 min after start of dialysis. Patients were divided into sex-stratified tertiles based on predialysis plasma syndecan-1 levels. We studied the association between plasma levels of syndecan-1 and volume, inflammation, and endothelial markers and its association with cardiovascular events and all-cause mortality using Kaplan-Meier curves and Cox regression analyses with adjustments for gender, age, diabetes, and dialysis vintage. Predialysis syndecan-1 levels were twofold higher in men compared with women ( P = 0.0003). Patients in the highest predialysis plasma syndecan-1 tertile had a significantly higher ultrafiltration rate ( P = 0.034) and lower plasma values of BNP ( P = 0.019), pro-ANP ( P = 0.024), and endothelin ( P < 0.0001) compared with the two lower predialysis syndecan-1 tertiles. No significant associations with inflammatory markers were found. Cox regression analysis showed that patients in the highest syndecan-1 tertile had significantly less cardiovascular events and better survival compared with the lowest syndecan-1 tertile ( P = 0.02 and P = 0.005, respectively). In hemodialysis patients, higher plasma syndecan-1 levels were associated with lower concentrations of BNP, pro-ANP, and endothelin and with better patient survival. This may suggest that control of volume status in hemodialysis patients allows an adaptive tissue regenerative response as reflected by higher plasma syndecan-1 levels.
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Affiliation(s)
- Josephine Koch
- Department of Nephrology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Nienke M. A. Idzerda
- Department of Nephrology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Wendy Dam
- Department of Nephrology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Solmaz Assa
- Department of Nephrology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
- Department of Cardiology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Casper F. M. Franssen
- Department of Nephrology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Jacob van den Born
- Department of Nephrology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
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Costa MGD, Poppelaars F, Assa S, Daha M, Berger S, Franssen C, Seelen M. The development of an ex vivo model for hemodialysis to mimic membrane induced complement activation. Mol Immunol 2018. [DOI: 10.1016/j.molimm.2018.06.076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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15
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Poppelaars F, Gaya da Costa M, Faria B, Berger SP, Assa S, Daha MR, Medina Pestana JO, van Son WJ, Franssen CFM, Seelen MA. Intradialytic Complement Activation Precedes the Development of Cardiovascular Events in Hemodialysis Patients. Front Immunol 2018; 9:2070. [PMID: 30271407 PMCID: PMC6146103 DOI: 10.3389/fimmu.2018.02070] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Accepted: 08/21/2018] [Indexed: 12/13/2022] Open
Abstract
Background: Hemodialysis (HD) is a life-saving treatment for patients with end stage renal disease. However, HD patients have markedly increased rates of cardiovascular morbidity and mortality. Previously, a link between the complement system and cardiovascular events (CV-events) has been reported. In HD, systemic complement activation occurs due to blood-to-membrane interaction. We hypothesize that HD-induced complement activation together with inflammation and thrombosis are involved in the development of CV-events in these patients. Methods: HD patients were followed for the occurrence of CV-events during a maximum follow-up of 45 months. Plasma samples were collected from 55 patients at different time points during one HD session prior to follow-up. Plasma levels of mannose-binding lectin, properdin and C3d/C3 ratios were assessed by ELISA. In addition, levels of von Willebrand factor, TNF-α and IL-6/IL-10 ratios were determined. An ex-vivo model of HD was used to assess the effect of complement inhibition. Results: During median follow-up of 32 months, 17 participants developed CV-events. In the CV-event group, the C3d/C3-ratio sharply increased 30 min after the start of the HD session, while in the event-free group the ratio did not increase. In accordance, HD patients that developed a CV-event also had a sustained higher IL-6/IL-10-ratio during the first 60 min of the HD session, followed by a greater rise in TNF-α levels and von Willebrand factor at the end of the session. In the ex-vivo HD model, we found that complement activation contributed to the induction of TNF-α levels, IL-6/IL-10-ratio and levels of von Willebrand factor. Conclusions: In conclusion, these findings suggest that early intradialytic complement activation predominantly occurred in HD patients who develop a CV-event during follow-up. In addition, in these patients complement activation was accompanied by a pro-inflammatory and pro-thrombotic response. Experimental complement inhibition revealed that this reaction is secondary to complement activation. Therefore, our data suggests that HD-induced complement, inflammation and coagulation are involved in the increased CV risk of HD patients.
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Affiliation(s)
- Felix Poppelaars
- Division of Nephrology, Department of Internal Medicine, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
| | - Mariana Gaya da Costa
- Division of Nephrology, Department of Internal Medicine, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
| | - Bernardo Faria
- Division of Nephrology, Department of Internal Medicine, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
- Nephrology and Infecciology Group, INEB/I3S, University of Porto, Porto, Portugal
- Department of Nephrology, Hospital Braga, Braga, Portugal
| | - Stefan P. Berger
- Division of Nephrology, Department of Internal Medicine, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
| | - Solmaz Assa
- Department of Cardiology, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
| | - Mohamed R. Daha
- Division of Nephrology, Department of Internal Medicine, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
- Department of Nephrology, University of Leiden, Leiden University Medical Center, Leiden, Netherlands
| | | | - Willem J. van Son
- Division of Nephrology, Department of Internal Medicine, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
| | - Casper F. M. Franssen
- Division of Nephrology, Department of Internal Medicine, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
| | - Marc A. Seelen
- Division of Nephrology, Department of Internal Medicine, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
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Assa S, Kuipers J, Ettema E, Gaillard CAJM, Krijnen WP, Hummel YM, Voors AA, van Melle JP, Westerhuis R, Willemsen A, Slart RHJA, Franssen CFM. Effect of isolated ultrafiltration and isovolemic dialysis on myocardial perfusion and left ventricular function assessed with 13N-NH 3 positron emission tomography and echocardiography. Am J Physiol Renal Physiol 2017; 314:F445-F452. [PMID: 29117996 DOI: 10.1152/ajprenal.00368.2017] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Hemodialysis is associated with a fall in myocardial perfusion and may induce regional left ventricular (LV) systolic dysfunction. The pathophysiology of this entity is incompletely understood, and the contribution of ultrafiltration and diffusive dialysis has not been studied. We investigated the effect of isolated ultrafiltration and isovolemic dialysis on myocardial perfusion and LV function. Eight patients (7 male, aged 55 ± 18 yr) underwent 60 min of isolated ultrafiltration and 60 min of isovolemic dialysis in randomized order. Myocardial perfusion was assessed by 13N-NH3 positron emission tomography before and at the end of treatment. LV systolic function was assessed by echocardiography. Regional LV systolic dysfunction was defined as an increase in wall motion score in ≥2 segments. Isolated ultrafiltration (ultrafiltration rate 13.6 ± 3.9 ml·kg-1·h-1) induced hypovolemia, whereas isovolemic dialysis did not (blood volume change -6.4 ± 2.2 vs. +1.3 ± 3.6%). Courses of blood pressure, heart rate, and tympanic temperature were comparable for both treatments. Global and regional myocardial perfusion did not change significantly during either isolated ultrafiltration or isovolemic dialysis and did not differ between treatments. LV ejection fraction and the wall motion score index did not change significantly during either treatment. Regional LV systolic dysfunction developed in one patient during isolated ultrafiltration and in three patients during isovolemic dialysis. In conclusion, global and regional myocardial perfusion was not compromised by 60 min of isolated ultrafiltration or isovolemic dialysis. Regional LV systolic dysfunction developed during isolated ultrafiltration and isovolemic dialysis, suggesting that, besides hypovolemia, dialysis-associated factors may be involved in the pathogenesis of hemodialysis-induced regional LV dysfunction.
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Affiliation(s)
- Solmaz Assa
- Department of Nephrology, University Medical Center Groningen , Groningen , The Netherlands.,Department of Cardiology, University Medical Center Groningen , Groningen , The Netherlands
| | | | - Esmée Ettema
- Department of Nephrology, University Medical Center Groningen , Groningen , The Netherlands
| | - Carlo A J M Gaillard
- Department of Nephrology, University Medical Center Groningen , Groningen , The Netherlands
| | - Wim P Krijnen
- Research Group Healthy Ageing, Allied Health Care and Nursing, Hanze University Groningen , Groningen , The Netherlands
| | - Yoran M Hummel
- Department of Cardiology, University Medical Center Groningen , Groningen , The Netherlands
| | - Adriaan A Voors
- Department of Cardiology, University Medical Center Groningen , Groningen , The Netherlands
| | - Joost P van Melle
- Department of Cardiology, University Medical Center Groningen , Groningen , The Netherlands
| | | | - Antoon Willemsen
- Department of Nuclear Medicine and Molecular Imaging, University Medical Center Groningen, University of Groningen , Groningen , The Netherlands
| | - Riemer H J A Slart
- Department of Nuclear Medicine and Molecular Imaging, University Medical Center Groningen, University of Groningen , Groningen , The Netherlands.,University of Twente, Faculty of Science and Technology, Department of Biomedical Photonic Imaging , Enschede , The Netherlands
| | - Casper F M Franssen
- Department of Nephrology, University Medical Center Groningen , Groningen , The Netherlands
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Poppelaars F, Gaya da Costa M, Berger SP, Assa S, Meter-Arkema AH, Daha MR, van Son WJ, Franssen CFM, Seelen MAJ. Erratum to: Strong predictive value of mannose-binding lectin levels for cardiovascular risk of hemodialysis patients. J Transl Med 2016; 14:245. [PMID: 27557787 PMCID: PMC4997692 DOI: 10.1186/s12967-016-1004-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Affiliation(s)
- Felix Poppelaars
- Division of Nephrology, Department of Internal Medicine, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands.
| | - Mariana Gaya da Costa
- Division of Nephrology, Department of Internal Medicine, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Stefan P Berger
- Division of Nephrology, Department of Internal Medicine, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Solmaz Assa
- Department of Cardiology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Anita H Meter-Arkema
- Division of Nephrology, Department of Internal Medicine, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Mohamed R Daha
- Division of Nephrology, Department of Internal Medicine, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands.,Department of Nephrology, Leiden University Medical Center, University of Leiden, Leiden, The Netherlands
| | - Willem J van Son
- Division of Nephrology, Department of Internal Medicine, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Casper F M Franssen
- Division of Nephrology, Department of Internal Medicine, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Marc A J Seelen
- Division of Nephrology, Department of Internal Medicine, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
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18
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Poppelaars F, Gaya da Costa M, Berger SP, Assa S, Meter-Arkema AH, Daha MR, van Son WJ, Franssen CFM, Seelen MAJ. Strong predictive value of mannose-binding lectin levels for cardiovascular risk of hemodialysis patients. J Transl Med 2016; 14:236. [PMID: 27495980 PMCID: PMC4974702 DOI: 10.1186/s12967-016-0995-5] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2016] [Accepted: 07/28/2016] [Indexed: 01/10/2023] Open
Abstract
Background Hemodialysis patients have higher rates of cardiovascular morbidity and mortality compared to the general population. Mannose-binding lectin (MBL) plays an important role in the development of cardiovascular disease. In addition, hemodialysis alters MBL concentration and functional activity. The present study determines the predictive value of MBL levels for future cardiac events (C-event), cardiovascular events (CV-event) and all-cause mortality in HD patients. Methods We conducted a prospective study of 107 patients on maintenance hemodialysis. Plasma MBL, properdin, C3d and sC5b-9 was measured before and after one dialysis session. The association with future C-events, CV-events, and all-cause mortality was evaluated using Cox regression models. Results During median follow-up of 27 months, 36 participants developed 21 C-events and 36 CV-events, whereas 37 patients died. The incidence of C-events and CV-events was significantly higher in patients with low MBL levels (<319 ng/mL, lower quartile). In fully adjusted models, low MBL level was independently associated with increased CV-events (hazard ratio 3.98; 95 % CI 1.88–8.24; P < 0.001) and C-events (hazard ratio 3.96; 95 % CI 1.49–10.54; P = 0.006). No association was found between low MBL levels and all-cause mortality. Furthermore, MBL substantially improved risk prediction for CV-events beyond currently used clinical markers. Conclusions Low MBL levels are associated with a higher risk for future C-events and CV-events. Therefore, MBL levels may help to identify hemodialysis patients who are at risk to develop cardiovascular disease. Electronic supplementary material The online version of this article (doi:10.1186/s12967-016-0995-5) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Felix Poppelaars
- Department of Internal Medicine, Division of Nephrology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands.
| | - Mariana Gaya da Costa
- Department of Internal Medicine, Division of Nephrology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Stefan P Berger
- Department of Internal Medicine, Division of Nephrology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Solmaz Assa
- Department of Cardiology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Anita H Meter-Arkema
- Department of Internal Medicine, Division of Nephrology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Mohamed R Daha
- Department of Internal Medicine, Division of Nephrology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands.,Department of Nephrology, Leiden University Medical Center, University of Leiden, Leiden, The Netherlands
| | - Willem J van Son
- Department of Internal Medicine, Division of Nephrology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Casper F M Franssen
- Department of Internal Medicine, Division of Nephrology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Marc A J Seelen
- Department of Internal Medicine, Division of Nephrology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
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Poppelaars F, Gaya da Costa M, Berger SP, Assa S, Meter-Arkema AH, Daha MR, Van Son WJ, Franssen CFM, Seelen MAJ. SP468LOW MANNOSE-BINDING LECTINLEVELS PREDICT CARDIOVASCULAR DISEASE IN HEMODIALYSIS PATIENTS. Nephrol Dial Transplant 2016. [DOI: 10.1093/ndt/gfw172.08] [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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20
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Humalda JK, Riphagen IJ, Assa S, Hummel YM, Westerhuis R, Vervloet MG, Voors AA, Navis G, Franssen CFM, de Borst MH. Fibroblast growth factor 23 correlates with volume status in haemodialysis patients and is not reduced by haemodialysis. Nephrol Dial Transplant 2015; 31:1494-501. [PMID: 26602863 DOI: 10.1093/ndt/gfv393] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2015] [Accepted: 10/27/2015] [Indexed: 01/24/2023] Open
Abstract
BACKGROUND Recent data suggest a role for fibroblast growth factor 23 (FGF-23) in volume regulation. In haemodialysis patients, a large ultrafiltration volume (UFV) reflects poor volume control, and both FGF-23 and a large UFV are risk factors for mortality in this population. We studied the association between FGF-23 and markers of volume status including UFV, as well as the intradialytic course of FGF-23, in a cohort of haemodialysis patients. METHODS We carried out observational, post hoc analysis of 109 prevalent haemodialysis patients who underwent a standardized, low-flux, haemodialysis session with constant ultrafiltration rate. We measured UFV, plasma copeptin and echocardiographic parameters including cardiac output, end-diastolic volume and left ventricular mass index at the onset of the haemodialysis session. We measured the intradialytic course of plasma C-terminal FGF-23 (corrected for haemoconcentration) and serum phosphate levels at 0, 1, 3 and 4 h after onset of haemodialysis and analysed changes with linear mixed effect model. RESULTS Median age was 66 (interquartile range: 51-75) years, 65% were male with a weekly Kt/V 4.3 ± 0.7 and dialysis vintage of 25.4 (8.5-52.5) months. In univariable analysis, pre-dialysis plasma FGF-23 was associated with UFV, end-diastolic volume, cardiac output, early diastolic velocity e' and plasma copeptin. In multivariable regression analysis, UFV correlated with FGF-23 (standardized β: 0.373, P < 0.001, model R(2): 57%), independent of serum calcium and phosphate. The association between FGF-23 and echocardiographic volume markers was lost for all but cardiac output upon adjustment for UFV. Overall, FGF-23 levels did not change during dialysis [7627 (3300-13 514) to 7503 (3109-14 433) RU/mL; P = 0.98], whereas phosphate decreased (1.71 ± 0.50 to 0.88 ± 0.26 mmol/L; P < 0.001). CONCLUSIONS FGF-23 was associated with volume status in haemodialysis patients. The strong association with UFV suggests that optimization of volume status, for example by more intensive haemodialysis regimens, may also benefit mineral homeostasis. A single dialysis session did not lower FGF-23 levels.
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Affiliation(s)
- Jelmer K Humalda
- Department of Internal Medicine, Division of Nephrology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Ineke J Riphagen
- Department of Internal Medicine, Division of Nephrology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Solmaz Assa
- Department of Internal Medicine, Division of Nephrology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Yoran M Hummel
- Department of Cardiology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | | | - Marc G Vervloet
- Department of Nephrology, VU Medical Center, Amsterdam, The Netherlands
| | - Adriaan A Voors
- Department of Cardiology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Gerjan Navis
- Department of Internal Medicine, Division of Nephrology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Casper F M Franssen
- Department of Internal Medicine, Division of Nephrology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Martin H de Borst
- Department of Internal Medicine, Division of Nephrology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
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Ettema EM, Kuipers J, Assa S, Bakker SJL, Groen H, Westerhuis R, Gaillard CAJM, Gansevoort RT, Franssen CFM. Changes in Plasma Copeptin Levels during Hemodialysis: Are the Physiological Stimuli Active in Hemodialysis Patients? PLoS One 2015; 10:e0127116. [PMID: 25973954 PMCID: PMC4431805 DOI: 10.1371/journal.pone.0127116] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2015] [Accepted: 04/10/2015] [Indexed: 01/08/2023] Open
Abstract
OBJECTIVES Plasma levels of copeptin, a surrogate marker for the vasoconstrictor hormone arginine vasopressin (AVP), are increased in hemodialysis patients. Presently, it is unknown what drives copeptin levels in hemodialysis patients. We investigated whether the established physiological stimuli for copeptin release, i.e. plasma osmolality, blood volume and mean arterial pressure (MAP), are operational in hemodialysis patients. METHODS One hundred and eight prevalent, stable hemodialysis patients on a thrice-weekly dialysis schedule were studied during hemodialysis with constant ultrafiltration rate and dialysate conductivity in this observational study. Plasma levels of copeptin, sodium, MAP, and blood volume were measured before, during and after hemodialysis. Multivariate analysis was used to determine the association between copeptin (dependent variable) and the physiological stimuli plasma sodium, MAP, excess weight as well as NT-pro-BNP immediately prior to dialysis and between copeptin and changes of plasma sodium, MAP and blood volume with correction for age, sex and diabetes during dialysis treatment. RESULTS Patients were 63 ± 15.6 years old and 65% were male. Median dialysis vintage was 1.6 years (IQR 0.7-4.0). Twenty-three percent of the patients had diabetes and 82% had hypertension. Median predialysis copeptin levels were 141.5 pmol/L (IQR 91.0-244.8 pmol/L). Neither predialysis plasma sodium levels, nor NT-proBNP levels, nor MAP were associated with predialysis copeptin levels. During hemodialysis, copeptin levels rose significantly (p<0.01) to 163.0 pmol/L (96.0-296.0 pmol/L). Decreases in blood volume and MAP were associated with increases in copeptin levels during dialysis, whereas there was no significant association between the change in plasma sodium levels and the change in copeptin levels. CONCLUSIONS Plasma copeptin levels are elevated predialysis and increase further during hemodialysis. Volume stimuli, i.e. decreases in MAP and blood volume, rather than osmotic stimuli, are associated with change in copeptin levels during hemodialysis.
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Affiliation(s)
- Esmée M. Ettema
- Department of Internal Medicine, Division of Nephrology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
- * E-mail:
| | | | - Solmaz Assa
- Department of Internal Medicine, Division of Nephrology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Stephan J. L. Bakker
- Department of Internal Medicine, Division of Nephrology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Henk Groen
- Department of Epidemiology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | | | - Carlo A. J. M. Gaillard
- Department of Internal Medicine, Division of Nephrology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Ron T. Gansevoort
- Department of Internal Medicine, Division of Nephrology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Casper F. M. Franssen
- Department of Internal Medicine, Division of Nephrology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
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Assa S, Westerhuis R, Franssen CF. In Reply to ‘Intravenous Iron, Inflammation, and Ventricular Dysfunction During Hemodialysis’. Am J Kidney Dis 2015; 65:518-9. [DOI: 10.1053/j.ajkd.2014.11.029] [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] [Received: 11/09/2014] [Accepted: 11/19/2014] [Indexed: 11/11/2022]
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Kanaan M, Ewert P, Berger F, Assa S, Schubert S. Follow-up of patients with interventional closure of ventricular septal defects with Amplatzer Duct Occluder II. Pediatr Cardiol 2015; 36:379-85. [PMID: 25179462 DOI: 10.1007/s00246-014-1017-0] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [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] [Received: 05/14/2014] [Accepted: 08/22/2014] [Indexed: 10/24/2022]
Abstract
Nonsurgical closure of congenital ventricular septal defects (VSD) has become increasingly acceptable with the availability of different occlusion systems. Transcatheter device treatment is used for perimembranous and muscular defects. Atrio-ventricular block remains the most troublesome complication of device closure. The aim of this study was to describe our experience with closure of VSD using the Amplatzer Duct Occluder II (ADO II) as an "off-label" approach in children and adults. Between 2004 and 2012 transcatheter closure of 31 VSD (20 perimembranous, 10 muscular VSD and 1 ruptured sinus valsalva) with ADO II was undertaken in patients between 3 months and 55 years of age and with a body weight ranging from 4 to 105 kg in our institution. In 29 of 31 procedures, the defect was successfully closed (93.5%) without any significant complications. No increase of aortic or tricuspid valve regurgitation was found in any after procedure. Small residual shunts were observed immediately after the device implantation, but disappeared during a median follow-up period of 38 months (0.4-63) in 27 of 31 patients. There was no incidence of AV block or other conductance abnormalities during implantation or follow-up. The ADO II device is safe and effective for transcatheter VSD closure, but this is still an "off-label" use. After long-term follow-up in a large number of patients this device may be approved for VSD closure in the future.
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Affiliation(s)
- M Kanaan
- Department of Pediatric Cardiology and Congenital Heart Diseases, Deutsches Herzzentrum Berlin, Augustenburger Platz 1, 13353, Berlin, Germany
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Kanaan M, Peters B, Assa S, Berger F, Schubert S. Effektivität und Sicherheit der perkutanen Angioplastie mittels "cutting“-Ballon bei Pat. mit angeborenen Herzfeh-lern. Thorac Cardiovasc Surg 2014. [DOI: 10.1055/s-0034-1394071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Schubert CP, Opgen-Rhein B, Ewert P, Schmitt K, Assa S, Berger F, Schubert S. Sicherheit und Effektivität des interventionellen PDA-Verschluss bei Frühgeborenen und Kindern unter 6kg. Thorac Cardiovasc Surg 2014. [DOI: 10.1055/s-0034-1393979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Meijers WC, van der Velde AR, Ruifrok WP, Schroten NF, Dokter MM, Damman K, Assa S, Franssen CF, Gansevoort RT, van Gilst WH, Silljé HH, de Boer RA. Renal handling of galectin-3 in the general population, chronic heart failure, and hemodialysis. J Am Heart Assoc 2014; 3:e000962. [PMID: 25237044 PMCID: PMC4323807 DOI: 10.1161/jaha.114.000962] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Background Galectin‐3 is a biomarker for prognostication and risk stratification of patients with heart failure (HF). It has been suggested that renal function strongly relates to galectin‐3 levels. We aimed to describe galectin‐3 renal handling in HF. Methods and Results In Sprague–Dawley rats, we infused galectin‐3 and studied distribution and renal clearance. Furthermore, galectin‐3 was measured in urine and plasma of healthy controls, HF patients and hemodialysis patients. To mimic the human situation, we measured galectin‐3 before and after the artificial kidney. Infusion in rats resulted in a clear increase in plasma and urine galectin‐3. Plasma galectin‐3 in HF patients (n=101; mean age 64 years; 93% male) was significantly higher compared to control subjects (n=20; mean age 58 years; 75% male) (16.6 ng/mL versus 9.7 ng/mL, P<0.001), while urinary galectin‐3 in HF patients was comparable (28.1 ng/mL versus 35.1 ng/mL, P=0.830). The calculated galectin‐3 excretion rate was lower in HF patient (2.3 mL/min [1.5 to 3.4] versus 3.9 mL/min [2.3 to 6.4] in control subjects; P=0.005). This corresponded with a significantly lower fractional excretion of galectin‐3 in HF patients (2.4% [1.7 to 3.7] versus 3.0% [1.9 to 5.5]; P=0.018). These differences, however, were no longer significant after correction for age, gender, diabetes, and smoking. HF patients who received diuretics (49%) showed significantly higher aldosterone and galectin‐3 levels. Hemodialysis patients (n=105; mean age 63 years; 65% male), without urinary galectin‐3 excretion, had strongly increased median plasma galectin‐3 levels (70.6 ng/mL). Conclusions In this small cross‐sectional study, we report that urine levels of galectin‐3 are not increased in HF patients, despite substantially increased plasma galectin‐3 levels. The impaired renal handling of galectin‐3 in patients with HF may explain the described relation between renal function and galectin‐3 and may account for the elevated plasma galectin‐3 in HF.
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Affiliation(s)
- Wouter C Meijers
- Department of Cardiology, University Medical Center Groningen, University of Groningen, The Netherlands (W.C.M., R.V., W.P.R., N.F.S., M.M.D., K.D., W.H.G., H.H.S., R.A.B.)
| | - A Rogier van der Velde
- Department of Cardiology, University Medical Center Groningen, University of Groningen, The Netherlands (W.C.M., R.V., W.P.R., N.F.S., M.M.D., K.D., W.H.G., H.H.S., R.A.B.)
| | - Willem P Ruifrok
- Department of Cardiology, University Medical Center Groningen, University of Groningen, The Netherlands (W.C.M., R.V., W.P.R., N.F.S., M.M.D., K.D., W.H.G., H.H.S., R.A.B.)
| | - Nicolas F Schroten
- Department of Cardiology, University Medical Center Groningen, University of Groningen, The Netherlands (W.C.M., R.V., W.P.R., N.F.S., M.M.D., K.D., W.H.G., H.H.S., R.A.B.)
| | - Martin M Dokter
- Department of Cardiology, University Medical Center Groningen, University of Groningen, The Netherlands (W.C.M., R.V., W.P.R., N.F.S., M.M.D., K.D., W.H.G., H.H.S., R.A.B.)
| | - Kevin Damman
- Department of Cardiology, University Medical Center Groningen, University of Groningen, The Netherlands (W.C.M., R.V., W.P.R., N.F.S., M.M.D., K.D., W.H.G., H.H.S., R.A.B.)
| | - Solmaz Assa
- Department of Nephrology, University Medical Center Groningen, University of Groningen, The Netherlands (S.A., C.F.F., R.T.G.)
| | - Casper F Franssen
- Department of Nephrology, University Medical Center Groningen, University of Groningen, The Netherlands (S.A., C.F.F., R.T.G.)
| | - Ron T Gansevoort
- Department of Nephrology, University Medical Center Groningen, University of Groningen, The Netherlands (S.A., C.F.F., R.T.G.)
| | - Wiek H van Gilst
- Department of Cardiology, University Medical Center Groningen, University of Groningen, The Netherlands (W.C.M., R.V., W.P.R., N.F.S., M.M.D., K.D., W.H.G., H.H.S., R.A.B.)
| | - Herman H Silljé
- Department of Cardiology, University Medical Center Groningen, University of Groningen, The Netherlands (W.C.M., R.V., W.P.R., N.F.S., M.M.D., K.D., W.H.G., H.H.S., R.A.B.)
| | - Rudolf A de Boer
- Department of Cardiology, University Medical Center Groningen, University of Groningen, The Netherlands (W.C.M., R.V., W.P.R., N.F.S., M.M.D., K.D., W.H.G., H.H.S., R.A.B.)
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Assa S, Hummel YM, Voors AA, Kuipers J, Westerhuis R, Groen H, Bakker SJ, Muller Kobold AC, van Oeveren W, Struck J, de Jong PE, Franssen CF. Hemodialysis-Induced Regional Left Ventricular Systolic Dysfunction and Inflammation: A Cross-sectional Study. Am J Kidney Dis 2014; 64:265-73. [DOI: 10.1053/j.ajkd.2013.11.010] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2013] [Accepted: 11/06/2013] [Indexed: 02/07/2023]
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Humalda JK, Assa S, Navis GJ, Franssen CFM, De Borst MH, Ogawa H, Ota Y, Watanabe T, Watanabe Y, Nishii H, Sato A, Waniewski J, Debowska M, Wojcik-Zaluska A, Ksiazek A, Zaluska W, Guastoni CM, Turri C, Toma L, Rombola G, Frattini G, Romei Longhena G, Teatini U, Siriopol DC, Stuard S, Ciolan A, Mircescu G, Raluca D, Nistor I, Covic A, De Roij Van Zuijdewijn CL, Chapdelaine I, Nube MJ, Blankestijn PJ, Bots ML, Konings SJ, Van Den Dorpel MA, Van Der Weerd NC, Ter Wee PM, Grooteman MP, Djuric PS, Jankovic A, Tosic J, Bajcetic S, Damjanovic T, Popovic J, Dimkovic N, Dimkovic N, Marinkovic J, Djuric Z, Knezevic V, Lazarevic T, Ljubenovic S, Markovic R, Rabrenovic V, Djukanovic L, Djuric PS, Popovic J, Jankovic A, Tosic J, Radovic Maslarevic V, Dimkovic N, Mathrani V, Drew P, Chess JI, Williams AI, Robertson S, Jibani M, Aithal VI, Kumwenda M, Roberts G, Mikhail AI, Grzegorzewska AE, Ostromecki G, Mostowska A, Sowi ska A, Jagodzi ski PP, Wu HY, Chen HY, Hsu SP, Pai MF, Yang JY, Peng YS, Hirose M, Hasegawa T, Kaneshima N, Sasai F, Komukai D, Takahashi K, Koiwa F, Shishido K, Yoshimura A, Selim G, Stojceva-Taneva O, Tozija L, Dzekova-Vidimliski P, Trajceska L, Petronievic Z, Gelev S, Amitov V, Sikole A, Moon SJ, Yoon SY, Shin DH, Lee JE, Kim HJ, Park HC, Hadjiyannakos D, Filiopoulos V, Loukas G, Pagonis S, Andriopoulos C, Drakou A, Vlassopoulos D, Catarino C, Cunha P, Ribeiro S, Rocha-Pereira P, Reis F, Sameiro-Faria M, Miranda V, Bronze-Rocha E, Belo L, Costa E, Santos-Silva A, De Mauri A, Brambilla M, Chiarinotti D, Lizio D, Matheoud R, Conti N, Conte MM, Carriero A, De Leo M, Karpetas AV, Sarafidis PA, Georgianos PI, Koutroumpas G, Divanis D, Vakianis P, Tzanis G, Raptopoulou K, Protogerou A, Stamatiadis D, Syrganis C, Liakopoulos V, Efstratiadis G, Lasaridis AN, Georgianos PI, Sarafidis PA, Karpetas AV, Koutroumpas G, Divanis D, Tersi M, Tzanis G, Raptopoulou K, Protogerou A, Syrganis C, Stamatiadis DN, Liakopoulos V, Efstratiadis G, Lasaridis AN, Kuczera P, Adamczak M, Wiecek A, Bove S, Giacon B, Corradini R, Prati E, Brognoli M, Tommasi A, Sereni L, Palladino G, Moriya H, Mochida Y, Ishioka K, Oka M, Maesato K, Hidaka S, Ohtake T, Kobayashi S, Moura A, Madureira J, Alija P, Fernandes JC, Oliveira JG, Lopez M, Filgueiras M, Amado L, Miranda V, Sameiro-Faria M, Vieira M, Santos-Silva A, Costa E, Lee JE, Seok JH, Choi HY, Ha SK, Park HC, Bossola M, Laudisio A, Antocicco M, Tazza L, Colloca G, Tosato M, Zuccala G, Ettema EM, Kuipers J, Assa S, Groen H, Gansevoort RT, Stade K, Bakker SJL, Gaillard CAJM, Westerhuis R, Franssen CFM, Bacchetta J, Couchoud K, Semlali S, Sellier-Leclerc AL, Bertholet-Thomas A, Cartier R, Cochat P, Ranchin B, Kim JC, Park K, Van Ende C, Wilmes D, Lecouvet FE, Labriola L, Cuvelier R, Van Ingelgem G, Jadoul M, De Mauri A, Doriana C, Brambilla M, Matheoud R, David P, Capurro F, Brustia M, Ruva CE, De Leo M, Bossola M, Giungi S, Di Stasio E, Tazza L, Lemesch S, Leber B, Horvath A, Ribitsch W, Schilcher G, Zettel G, Tawdrous M, Rosenkranz AR, Stadlbauer-Kollner V, Matsushima H, Oyama A, Bosch Benitez-Parodi E, Baamonde Laborda E, Batista Garcia F, Perez Suarez G, Anton Perez G, Garcia Canton C, Toledo Gonzalez A, Lago Alonso MM, Checa Andres MD, Cobo G, Di Gioia C, Camacho R, Garcia Lacalle C, Ortega O, Rodriguez I, Herrero J, Oliet A, Ortiz M, Mon C, Vigil A, Gallar P, Bossola M, Pellu V, Di Stasio E, Giungi S, Nebiolo PE, Sasaki K, Yamguchi S, Hesaka A, Iwahashi E, Sakai S, Fujimoto T, Minami S, Fujita Y, Yokoyama K, Shutov E, Ryabinskya G, Lashutin S, Gorelova E, Volodicheva E, Podesta MA, Cancarini G, Cucchiari D, Montanelli A, Badalamenti S, Graziani G, Bossola M, Distasio E, Tazza L, Pchelin I, Shishkin A, Fedorova Y, Kao CC, Chu TS, Tsai TJ, Wu KD, Wu MS, Kim JC, Park K, Raikou V, Kaisidis P, Tsamparlis E, Kanellopoulos P, Boletis J, Ueda A, Hirayama A, Owada S, Nagai K, Saito C, Yamagata K. DIALYSIS. PATHOPHYSIOLOGY AND CLINICAL STUDIES. Nephrol Dial Transplant 2014. [DOI: 10.1093/ndt/gfu177] [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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Kanaan M, Assa S, Peters B, Ewert P, Berger F, Schubert S. Effektivität und Sicherheit des interventionellen VSD-Verschlusses mit dem Amplatzer-Duct-Occluder (ADO) II. Thorac Cardiovasc Surg 2013. [DOI: 10.1055/s-0033-1354511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Schubert S, Ewert P, Riesenkampff E, Kuehne T, Kanaan M, Assa S, Berger F. Value of 3D Rotational Angiography and MRI-Based Cardiac Mapping for Complex Interventional Procedures. Thorac Cardiovasc Surg 2013. [DOI: 10.1055/s-0033-1354534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Assa S, Hummel YM, Voors AA, Kuipers J, Groen H, de Jong PE, Westerhuis R, Franssen CF. Changes in Left Ventricular Diastolic Function During Hemodialysis Sessions. Am J Kidney Dis 2013; 62:549-56. [DOI: 10.1053/j.ajkd.2013.02.356] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2012] [Accepted: 02/01/2013] [Indexed: 11/11/2022]
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Meijers WC, Schroten NF, Ruifrok WP, Assa S, Dokter MM, Damman K, Gansevoort RT, Van Gilst WH, Sillje HH, De Boer RA. Urinary and plasma galectin-3 in heart failure - insights in renal handling. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht309.p4243] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Assa S, Hummel YM, Voors AA, Kuipers J, Westerhuis R, de Jong PE, Franssen CFM. Hemodialysis-induced regional left ventricular systolic dysfunction: prevalence, patient and dialysis treatment-related factors, and prognostic significance. Clin J Am Soc Nephrol 2012; 7:1615-23. [PMID: 22822014 DOI: 10.2215/cjn.00850112] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
BACKGROUND AND OBJECTIVES The hemodialysis procedure may acutely induce regional left ventricular systolic dysfunction. This study evaluated the prevalence, time course, and associated patient- and dialysis-related factors of this entity and its association with outcome. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS Hemodialysis patients (105) on a three times per week dialysis schedule were studied between March of 2009 and March of 2010. Echocardiography was performed before dialysis, at 60 and 180 minutes intradialysis, and at 30 minutes postdialysis. Hemodialysis-induced regional left ventricular systolic dysfunction was defined as an increase in wall motion score in more than or equal to two segments. RESULTS Hemodialysis-induced regional left ventricular systolic dysfunction occurred in 29 (27%) patients; 17 patients developed regional left ventricular systolic dysfunction 60 minutes after onset of dialysis. Patients with hemodialysis-induced left ventricular systolic dysfunction were more often male, had higher left ventricular mass index, and had worse predialysis left ventricular systolic function (left ventricular ejection fraction). The course of blood volume, BP, heart rate, electrolytes, and acid-base parameters during dialysis did not differ significantly between the two groups. Patients with hemodialysis-induced regional left ventricular systolic dysfunction had a significantly higher mortality after correction for age, sex, dialysis vintage, diabetes, cardiovascular history, ultrafiltration volume, left ventricular mass index, and predialysis wall motion score index. CONCLUSIONS Hemodialysis induces regional wall motion abnormalities in a significant proportion of patients, and these changes are independently associated with increased mortality. Hemodialysis-induced regional left ventricular systolic dysfunction occurs early during hemodialysis and is not related to changes in blood volume, electrolytes, and acid-base parameters.
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Affiliation(s)
- Solmaz Assa
- Department of Internal Medicine, Division of Nephrology, University Medical Center Groningen, University of Groningen, Hanzeplein 1, Groningen, The Netherlands
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Talab SS, Elmi A, Emami H, Nezami BG, Assa S, Ghasemi M, Tavangar SM, Dehpour AR. Protective effects of acute lithium preconditioning against renal ischemia/reperfusion injury in rat: Role of nitric oxide and cyclooxygenase systems. Eur J Pharmacol 2012; 681:94-9. [DOI: 10.1016/j.ejphar.2012.01.042] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2011] [Revised: 01/23/2012] [Accepted: 01/28/2012] [Indexed: 11/26/2022]
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Assa S, Dasselaar JJ, Slart RHJA, de Jong PE, Voors AA, Tio RA, Franssen CFM. Comparison of cardiac positron emission tomography perfusion defects during stress induced by hemodialysis versus adenosine. Am J Kidney Dis 2012; 59:862-4. [PMID: 22445134 DOI: 10.1053/j.ajkd.2012.01.018] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2011] [Accepted: 01/20/2012] [Indexed: 12/23/2022]
Abstract
The cardiac stress imposed by hemodialysis may differ from that induced by pharmacologic agents used for myocardial perfusion imaging-based stress testing. With repetitive intradialytic [(13)N]ammonia positron emission tomography, we showed that standard hemodialysis had an acute adverse effect on cardiac perfusion and left ventricular function that was not detected by standard diagnostic adenosine stress testing.
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Affiliation(s)
- Solmaz Assa
- Department of Internal Medicine, Division of Nephrology, University Medical Center Groningen, Groningen, the Netherlands
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Talab SS, Emami H, Elmi A, Nezami BG, Assa S, Deroee AF, Daneshmand A, Tavangar SM, Dehpour AR. Chronic lithium treatment protects the rat kidney against ischemia/reperfusion injury: the role of nitric oxide and cyclooxygenase pathways. Eur J Pharmacol 2010; 647:171-7. [PMID: 20826134 DOI: 10.1016/j.ejphar.2010.08.036] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2010] [Revised: 07/31/2010] [Accepted: 08/24/2010] [Indexed: 01/22/2023]
Abstract
Ischemia/reperfusion injury is a major problem in renal transplantation. Several evidences represent lithium preconditioning effect against ischemia/reperfusion injury in various tissues. In this study our aim was to investigate the protective effect of chronic lithium administration on renal ischemia/reperfusion injury in rats. Ischemia/reperfusion injury was induced by clamping left renal pedicle for 60 min, 2 weeks after right nephrectomy. Lithium-treated animals received lithium-chloride in drinking water for 30days. In order to investigate the role of nitric oxide (NO) and cyclooxygenase (COX) pathways in renoprotective effect of lithium, N(ω)-nitro-L-arginine methyl ester hydrochloride (L-NAME, NO synthase inhibitor) and indomethacin (COX inhibitor) were used, respectively. Serum creatinine, blood urea nitrogen and renal histology were assessed 24h after inducing ischemia/reperfusion injury. Dimercaptosuccinic acid scan was also performed 48 h following operation. Chronic lithium treatment in ischemia/reperfusion injury groups significantly decreased creatinine (1.09±0.16 mg/dl), blood urea nitrogen (59.0±13.38 mg/dl), histological damage (7.83%±4.02%) and improved cortical function compared with non-lithium treated animals (4.45±0.44, 176.66±12.24 mg/dl and 83.5%±3.5%, respectively) (P<0.001). Either L-NAME or indomethacin administration partially reversed the protective effect of lithium, while simultaneous blockade of NO and COX pathways completely abolished lithium renoprotective effect. Our results indicate that lithium ameliorates renal ischemia/reperfusion injury through NO and/or COX pathways. We propose that lithium pre-treatment as a simple and practical intervention to boost the renal viability and function after ischemia/reperfusion injury may be promising in the setting of transplantation.
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Affiliation(s)
- Saman Shafaat Talab
- Department of Pharmacology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
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Mirbagheri SA, Nezami BG, Assa S, Hajimahmoodi M. Rectal administration of d-alpha tocopherol for active ulcerative colitis: A preliminary report. World J Gastroenterol 2008; 14:5990-5. [PMID: 18932276 PMCID: PMC2760182 DOI: 10.3748/wjg.14.5990] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the anti-oxidant and anti-neutrophil recruitment effects of rectal d-alpha (d-α) tocopherol administration on mild and moderately active ulcerative colitis (UC).
METHODS: Fifteen patients with mild and moderately active ulcerative colitis were enrolled in an open-label study of d-α tocopherol enema (8000 U/d) for 12 wk. All patients were receiving concomitant therapy with 5-aminosalicylic acid derivatives (5-ASA) and/or immunomodulator medications. Endoscopic evaluation was performed at baseline and after 4th and 12th weeks. Disease activity was measured with the Mayo disease activity index (DAI) and remission was defined as DAI of ≤ 2 with no blood in stool. Clinical response was defined as a DAI reduction of ≥ 2.
RESULTS: At the end of 12th week, the average DAI score significantly decreased compared to the beginning of the study (2.3 ± 0.37 vs 8 ± 0.48, P < 0.0001). One patient was withdrawn after 3 wk for being unavailable to follow-up. On the 4th week of therapy, 12 patients showed clinical response, 3 of whom (21.4%) achieving remission. After 12 wk, all 14 patients responded clinically to the therapy and remission was induced in 9 of them (64%). No patient reported adverse events or was hospitalized due to worsened disease activity.
CONCLUSION: This preliminary report suggests that rectal d-α tocopherol may represent a novel therapy for mild and moderately active UC. The observed results might be due to the anti-inflammatory and anti-oxidative properties of vitamin E.
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Lahooti M, Taheri PA, Nezami BG, Assa S. Sacrococcygeal pilonidal sinus treated by a new fascio-cutaneous flap. Dis Colon Rectum 2008; 51:588-92. [PMID: 18286337 DOI: 10.1007/s10350-008-9211-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [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] [Received: 04/01/2007] [Revised: 09/24/2007] [Accepted: 10/17/2007] [Indexed: 02/08/2023]
Abstract
PURPOSE This study reported the technical details and preliminary clinical outcomes of a new fascio-cutaneous transposition flap for the surgical treatment of pilonidal sinus. METHODS Fifty-two patients with pilonidal sinus were surgically treated. During the surgical procedure, an inferiorly pedicled, fascio-cutaneous flap with specific geometric characteristics was prepared and transposed. Postoperative pain, complications, duration of hospital stay, and time off worked were assessed. Patients were followed for eighteen months after surgery. RESULTS The mean hospital stay was 2 days. Drains and sutures were removed after 3 and 12 days, respectively. No flap ischemia, wound dehiscence or major complications were observed. Tension on suture lines and pain after surgery were negligible. Wound infections occurred in 4 patients (7.7 percent) and were managed by removing a few sutures. Seroma was detected in 6 patients (11.5 percent). The mean time patients missed work was 7 days. No recurrence was observed during the follow-up period of 18 months. CONCLUSIONS With no disease recurrence, minimal complication rate, time off work, and acceptable aesthetic outcome, this fascio-cutaneous transposition flap technique is a safe and effective method for surgically treating pilonidal sinus.
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Affiliation(s)
- Majid Lahooti
- Department of Plastic Surgery, Amir-Alam Hospital, Medical Sciences/University of Tehran, Tehran, Iran.
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Phillip M, Maor G, Assa S, Silbergeld A, Segev Y. Testosterone stimulates growth of tibial epiphyseal growth plate and insulin-like growth factor-1 receptor abundance in hypophysectomized and castrated rats. Endocrine 2001; 16:1-6. [PMID: 11822821 DOI: 10.1385/endo:16:1:01] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/27/2001] [Revised: 06/02/2001] [Accepted: 07/09/2001] [Indexed: 11/11/2022]
Abstract
Puberty is associated with an increase in the plasma concentration of sex steroids, growth hormone (GH), and insulin-like growth factor-1 (IGF-1). Gonadal steroid hormones are important for the normal pubertal growth spurt and skeletal growth. The mechanism by which gonadal steroids induces skeletal growth is still not fully understood. To study the GH-independent effect of testosterone on growth, we investigated the effect of testosterone injections on the tibial epiphyseal growth plate (EGP) in an in vivo model of hypophysectomized and castrated male rats. Four groups (six animals each) of 28-d-old male rats were studied. Groups A, B, and C were hypophysectomized and castrated and received 500 microg/(kg x d) of hydrocortisone and 15 microg/(kg x d) of levothyroxine sodium. Groups A and B were also treated with daily sc injections of 10 microg of testosterone/100 g of body wt and 100 microg of testosterone/100 g of body wt, respectively, for 7 d. Group C was injected with vehicle alone. Group D were intact animals injected with saline (controls). Animals were sacrificed on 8 d. As expected, serum GH levels were found to be very low (1.13+/-0.1 ng/mL) in the hypophysectomized animals (group C, hypopit), and testosterone treatment did not change them significantly. Serum IGF-1 decreased from 502.9+/-13 ng/mL in group D to 167+/-41.4 ng/mL in group C (p < 0.001). Testosterone therapy had no stimulatory effect on serum IGF-1 levels in the hypopit + low-dose group (A) (220+/-94.8 ng/mL) and had an inhibitory effect in the hypopit + high-dose group (B) (39.3+/-17.5). Histomorphometric determinations demonstrated an EGP width of 472.3+/-39 microm in the intact animals but only 336.9+/-1.6 microm in the hypopit group (C) (p < 0.01). High-dose testosterone treatment (group B) significantly increased the EGP width (to 438.8+/-27.8), (p < 0.001), whereas low-dose testosterone (group A) did not. Immunohistochemistry studies revealed that the levels of IGF-1 in the EGP of the control animals were almost negligible and that testosterone did not change them. However, testosterone increased in a dose-dependent manner the abundance of IGF-1 receptor EGP. We conclude that testosterone has a direct, local, GH-independent effect on the EGP growth and IGF-1 receptor abundance.
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Affiliation(s)
- M Phillip
- The Felsenstein Medical Research Center, Institute for Endocrinology and Diabetes, National Center for Childhood Diabetes, Schneider Children's Medical Center, Petach Tikva, Israel.
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Bloch K, Assa S, Lazard D, Abramov N, Shalitin S, Weintrob N, Josefsberg Z, Rapoport M, Vardi P. Neonatal pig islets induce a lower T-cell response than adult pig islets in IDDM patients. Transplantation 1999; 67:748-52. [PMID: 10096533 DOI: 10.1097/00007890-199903150-00018] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.8] [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: 11/26/2022]
Abstract
BACKGROUND Pancreatic pig islets may provide a substitute in the future for difficult to obtain human islets for transplantation in insulin-dependent diabetes millitus (IDDM) patients. However, the immune response to xenografts may significantly hamper this approach. Because neonatal tissue is believed to be less immunogenic, we examined whether the T-cell response to neonatal pig islets differs from the response to adult islets. METHODS The T-cell proliferative response to different concentrations of sonicated neonatal and adult pig islets, as well as to insulin and mitogens, was tested in 21 recent onset IDDM patients and 21 healthy controls. We determined the presence of various circulating islet autoantibodies and their association with the T-cell response in IDDM patients. RESULTS In the IDDM patients, sonicated adult pig islets (at 1 microg protein/ml) induced a significantly higher frequency (12 of 21 vs. 1 of 21, p<0.001) and magnitude (2.58+/-0.44 vs. 1.38+/-0.13, p<0.02) of positive T-cell responses than neonatal islets at the same concentration. Similar results were obtained with a 10-fold higher concentration of islet sonicate. There was no significant association between the individual T-cell responses and the presence of circulating autoantibodies in IDDM patients. CONCLUSION These results indicate that neonatal pig islets induce a lower T-cell reactivity than adult islets, suggesting that the neonatal tissue may be immunologically more suitable for future islet xenotransplantation.
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Affiliation(s)
- K Bloch
- National Center for Childhood Diabetes, Schneider Children's Medical Center of Israel, Tel-Aviv University, Petah-Tikva
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Kauschansky A, Frydman M, Assa S, Kwon OJ, Israel S, Lazard D, Sprecher E, Bloch K, Brautbar C, Vardi P. D-penicillamine-induced pancreatic islet autoantibody production is independent of the immunogenetic background: a lesson from patients with Wilson's disease. Clin Immunol Immunopathol 1998; 89:279-83. [PMID: 9837698 DOI: 10.1006/clin.1998.4609] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
D-penicillamine (d-PA) was reported to induce various immunological abnormalities including production of autoantibodies to insulin. These abnormalities were mainly described in patients with primary immunological disorders such as rheumatoid arthritis. In order to clarify whether d-PA-induced immune disorders are restricted to patients genetically prone to develop autoimmune diseases or to a direct drug effect, we tested for the presence of various autoantibodies and for molecular HLA typing in 17 patients with Wilson's disease treated with this drug. In 2/17 patients, low-titer (10 JDFU) circulating islet cell autoantibodies (ICA) were detected, while another patient was positive for the presence of insulin autoantibodies. None of the sera tested showed reactivity for glutamic acid decarboxylase or ICA512. Five of twelve patients were positive for anti-single-stranded DNA autoantibody. Molecular HLA typing of the autoantibody-positive subjects showed that they carry HLA haplotypes not associated with insulin-dependent diabetes. The insulin response to intravenous glucose tolerance test in two patients with autoantibodies was found to be normal. A second blood testing of the autoantibody-positive patients 5 months following initial evaluation revealed conversion to negativity in all three. Our results suggest that d-PA-induced autoantibodies in patients with Wilson's disease are independent of the immunogenetic background characteristics of diabetes.
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Affiliation(s)
- A Kauschansky
- SCMCI, The Felsenstein Research Center, Petah Tiqva, Israel
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42
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Abstract
The association between HLA-DR and DQ and insulin dependent diabetes mellitus (IDDM) was analyzed in 47 patients and 76 controls of Yemenite Jewish origin. The IDDM susceptibility alleles DRB1*03011, DQA1*0501, DQB1*02 and DRB1*0402, DQA1*0301, DQB1*0302 found in Caucasians had a very strong predisposing effect also in the Yemenite IDDM group. The DRB1*07, DQA1*0201 and DQB1*02 alleles were found to have a strong negative association with IDDM. None of the patients carried DRB1*07 and DQA1*0201 compared with healthy controls (43.7%). Our analysis revealed that the DRB1*03011 DQA1*0501 DQB1*02/DRB1*04 DQA1*03 DQB1*0302 heterozygous genotype confers the highest susceptibility (59.6% in patients vs. 0% in controls). The homozygous DRB1*03 and DRB1*04 genotypes were also found to be positively associated with the disease. 81% of the patients compared to 1.3% of controls carried the susceptibility alleles on both haplotypes. In conclusion, the development of IDDM in Yemenite Jews is strongly dependent on the presence of the susceptibility HLA alleles and on the absence of the DRB1*07 haplotype. The Yemenite Jewish group is uniquely homogenous with regard to genetic susceptibility factors involved in the process of IDDM, and may thus be an ideal model for further genetic studies.
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Affiliation(s)
- S Israel
- Tissue Typing Unit, Hadassah Medical Organization, Jerusalem, Israel
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43
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Lazar D, Weintrob N, Abramov N, Assa S, Bloch K, Ofan R, Ben-Zaken H, Vardi P. [Islet autoantibody assays in type I diabetes: superiority of passage from use of ICA to traditional tests]. Harefuah 1998; 134:678-81, 750. [PMID: 10909610] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Abstract
Islet cell antibodies (ICA) continue to serve as the basis of the principal serological test for definition of active autoimmunity of beta-cells. Its disadvantages are the need for human pancreatic tissue and difficulty in obtaining quantitative results. In the past decade biochemically-defined beta-cell antigens were described, leading to the development of sensitive and specific autoantibody assays, to predict insulin-dependent diabetes mellitus (IDDM). We examined the value of combined biochemically-based serological assays, such as autoantibodies to insulin (IAA), glutamic acid decarboxylase (GADA) and ICA512 (ICA512A) to replace the traditional ICA assay. Blood samples of 114 newly diagnosed IDDM patients, aged 12 +/- 5 yrs (range 2 months-29 years) were tested for ICA (indirect immunofluorescence), IAA, GADA and ICA512A (radiobinding assay). The latter 2 assays were performed using recombinant human [35S]-labeled antigen produced by in vitro transcription/translation. We found that fewer sera scored positive for ICA and/or IAA (80.7%, 92/114) than for 1 or more of IAA, GAD, or ICA512 (88.6%, 101/114). We conclude that combined testing for IAA, GAD and ICA512 can replace the traditional ICA/IAA test to predict IDDM and is helpful in the differential diagnosis of insulin-dependent and noninsulin-dependent diabetes.
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Affiliation(s)
- D Lazar
- Institute for Pediatric Endocrinology and Diabetes, Schneider Children's Medical Center, Petah Tikva
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44
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Klipper-Aurbach Y, Wasserman M, Braunspiegel-Weintrob N, Borstein D, Peleg S, Assa S, Karp M, Benjamini Y, Hochberg Y, Laron Z. Mathematical formulae for the prediction of the residual beta cell function during the first two years of disease in children and adolescents with insulin-dependent diabetes mellitus. Med Hypotheses 1995; 45:486-90. [PMID: 8748093 DOI: 10.1016/0306-9877(95)90228-7] [Citation(s) in RCA: 206] [Impact Index Per Article: 7.1] [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: 02/02/2023]
Abstract
On the basis of a retrospective study of 71 children followed for 24 months after diagnosis of type I insulin dependent diabetes a fitted mathematical model was constructed for the prediction of the course of beta cell function from the time of diagnosis. Two equations were derived, one for the maximal basal (B-max) and the other for the maximal i.v. glucagon stimulated peak C-peptide (P-max) levels reached during the remission period. The prognostic variables selected for analysis were: peak C-peptide levels at diagnosis (Po), age sex, degree of obesity, pubertal rating, the presence of islet cell antibodies (ICA) and levels of GHb. Multivariate analysis of the data showed that Po (p = 0.0006), puberty (p = 0.041). obesity (p = 0.0021), sex (p = 0.031), ICA (p = 0.0045) and GHb(p = 0.0066) significantly contributed to the prediction formula obtained for B-max whereas the contribution of the above variables for P-max were: Po (p = 0.0019), puberty (p = 0.0187), obesity (p = 0.0058), sex (p = 0.0598), ICA (p = 0.0187) and GHb (p = 0.0027). The residuals of the observed values from the values fitted by the predicted equations served to define two separate groups demonstrating distinct differences in the natural course of beta cell function in type I diabetes. This fitted model may thus be useful in distinguishing between newly diagnosed young patients who will undergo remission, requiring lower insulin doses, and those who have little chance for remission. It might also be helpful in the selection of patients most likely to benefit from immunosuppression or modulation, to maximize the benefit to risk ratio for such patients.
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Affiliation(s)
- Y Klipper-Aurbach
- Institute of Pediatric and adolescent endocrinology (WHO Collaborating Center for the Study of Diabetes in Youth), Children's Medical Center of Israel, Petah Tikva, Israel
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45
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Assa S, Benjamini Y. Insulin antibody assay: a statistical evaluation of sensitivity, precision and reproducibility in healthy subjects. Br J Biomed Sci 1993; 50:103-8. [PMID: 8219914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Eighty-seven sera from healthy non-diabetic subjects, negative for islet cell antibodies, were analysed for 125I-insulin serum binding capacity by a commercial radioimmunoassay. In order to define the detection limit of the assay for insulin antibodies we used the corrected binding capacity to 125I-insulin of the normal sera obtained by competitive inhibition with excess of unlabelled insulin. To test the reproducibility of the results as a function of the tracer decay the sera were re-examined after intervals of 17 and 37 days, when a drift of more than 1% was found in the period investigated. Using the corrected bindings improved reproducibility considerably. The extra variation between the three assays, taking into account the decay of the tracer, was negligible. The main component of error contributing to these variations among individuals was found to be the precision, defined as the mean standard deviation among the replicates, which is SD(c) = 0.325%. We conclude that this assay is suitable for the screening of positive insulin autoantibodies in pre-diabetic subjects, and recommend that the estimate of precision from the replicates with excess insulin be used and that the detection limit be set at three times the estimated SD(c).
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Affiliation(s)
- S Assa
- Institute of Pediatric and Adolescent Endocrinology, Beilinson Medical Center, Petah Tiqva, Israel
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Assa S, Moroz C. Elevated serum placental isoferritin in newly diagnosed type 1 (insulin-dependent) diabetes mellitus. A possible marker for identification of high risk subjects. Diabetologia 1990; 33:557-60. [PMID: 2253833 DOI: 10.1007/bf00404144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Placental isoferritin is produced by activated T lymphocytes and may, therefore, be considered as a manifestation of T cell involvement. Placental isoferritin is measured using CM-H-9 monoclonal antibody which binds exclusively to placental isoferritin. Placental isoferritin has been determined in the serum of 80 patients with Type I (insulin-dependent) diabetes mellitus, 100 healthy first degree relatives and 81 healthy children. Serum levels which were measured in Type 1 diabetic patients, (24.0-140 U/ml; median and range) were significantly higher than those of family members (0,0-73; median and range; p less than 0.0001) and normal control subjects (0,0-48; median and range; p less than 0.0001). Using 0-10 U/ml as the upper limit of normal, it was found that 31 of 50 (62%) of Type 1 diabetic patients, 25 of 100 (25%) family members and 7 of 81 (8.6%) healthy control subjects had abnormal placental isoferritin levels. Islet cell antibodies were positive in 31 of 44 tested diabetic patients and, in 8 of 71 tested family members, and among them 54.8% and 50% respectively also had elevated placental isoferritin levels. However, no statistically significant correlation was found between islet cell antibodies and placental isoferritin levels. Treatment of Type 1 diabetic patients with insulin was accompanied by a significant decrease (p less than 0.002) of serum placental isoferritin within 2-4 weeks of treatment. It is noteworthy that placental isoferritin was below detection in 34 of 35 Type 2 (non-insulin-dependent) diabetic patients.(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- S Assa
- Institute of Pediatric and Adolescent Endocrinology, Tel-Aviv University, Israel
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Assa S, Weisselberg S, Steir M. [Elevated serum enzyme levels in exposure to trinitrotoluene]. Harefuah 1987; 113:7-9. [PMID: 3692354] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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Blum M, Assa S, Bacalu B, Honig B, Blum I. The influence of short-term estrogen replacement therapy (ERT) on the blood pressure and daily urinary catecholamine excretion in a small group of post-menopausal women. Eur J Obstet Gynecol Reprod Biol 1986; 23:195-9. [PMID: 3817261 DOI: 10.1016/0028-2243(86)90148-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The blood pressure and daily urinary catecholamine excretion were examined in nineteen non-smoking post-menopausal women, receiving estrogen replacement therapy for a period of 4 months. The estrogens administered consisted of 17 beta-estradiol combined with estriol and norethisterone acetate administered sequentially (Trisequens, Novo, Denmark). Before the institution of treatment, the blood pressure and urinary catecholamine excretion were normal. After a period of 4 months, no change in blood pressure was observed. However, a marked and significant increase in daily urinary catecholamine excretion was noticed (72.3 +/- 18.96 micrograms/day to 102.0 +/- 26.0 micrograms: p less than 0.01). The pathogenetic implications of this increase are discussed.
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Abstract
A survey of upper urinary tract stone composition was carried out over 8 years (1974-1982) in 1147 patients, following a previous survey (1966-1974). Trends in the development of stone formation were found. The most obvious differences were fewer pure calcium oxalate (0.75 versus 5.50%) and uric acid stones (6.11 versus 13.30%) and more mixed stones than in our previous study. In most ethnic groups urinary stones were composed of calcium oxalate/calcium phosphate. A higher prevalence of stones in Israeli-born Jews was noted, in comparison with our previous survey. Age group analysis showed this increase to be limited to the 21-50-year-old group, in contradistinction to a clear decrease in stone formation in Israeli-born Arabs and Jews under the age of 20 years.
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