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Berger WR, Jagu B, van den Berg NWE, Chan Pin Yin DRPP, van Straalen JP, de Boer OJ, Driessen AHG, Neefs J, Krul SPJ, van Boven WP, van der Wal AC, de Groot JR. The change in circulating galectin-3 predicts absence of atrial fibrillation after thoracoscopic surgical ablation. Europace 2017; 20:764-771. [DOI: 10.1093/europace/eux090] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2016] [Accepted: 04/26/2016] [Indexed: 11/13/2022] Open
Affiliation(s)
- Wouter R Berger
- Department of Cardiology, Experimental Cardiology and Cardiothoracic Surgery, Heart Center, Academic Medical Center, Meibergdreef 9, 1100 DD, Amsterdam, The Netherlands
| | - Benoît Jagu
- Department of Cardiology, Experimental Cardiology and Cardiothoracic Surgery, Heart Center, Academic Medical Center, Meibergdreef 9, 1100 DD, Amsterdam, The Netherlands
| | - Nicoline W E van den Berg
- Department of Cardiology, Experimental Cardiology and Cardiothoracic Surgery, Heart Center, Academic Medical Center, Meibergdreef 9, 1100 DD, Amsterdam, The Netherlands
| | - Dean R P P Chan Pin Yin
- Department of Cardiology, Experimental Cardiology and Cardiothoracic Surgery, Heart Center, Academic Medical Center, Meibergdreef 9, 1100 DD, Amsterdam, The Netherlands
| | - Jan P van Straalen
- Department of Clinical Chemistry, Academic Medical Center, Meibergdreef 9, 1100 DD, Amsterdam, The Netherlands
| | - Onno J de Boer
- Department of Pathology, Academic Medical Center, Meibergdreef 9, 1100 DD, Amsterdam, The Netherlands
| | - Antoine H G Driessen
- Department of Cardiology, Experimental Cardiology and Cardiothoracic Surgery, Heart Center, Academic Medical Center, Meibergdreef 9, 1100 DD, Amsterdam, The Netherlands
| | - Jolien Neefs
- Department of Cardiology, Experimental Cardiology and Cardiothoracic Surgery, Heart Center, Academic Medical Center, Meibergdreef 9, 1100 DD, Amsterdam, The Netherlands
| | - Sébastien P J Krul
- Department of Cardiology, Experimental Cardiology and Cardiothoracic Surgery, Heart Center, Academic Medical Center, Meibergdreef 9, 1100 DD, Amsterdam, The Netherlands
| | - WimJan P van Boven
- Department of Cardiology, Experimental Cardiology and Cardiothoracic Surgery, Heart Center, Academic Medical Center, Meibergdreef 9, 1100 DD, Amsterdam, The Netherlands
| | - Allard C van der Wal
- Department of Pathology, Academic Medical Center, Meibergdreef 9, 1100 DD, Amsterdam, The Netherlands
| | - Joris R de Groot
- Department of Cardiology, Experimental Cardiology and Cardiothoracic Surgery, Heart Center, Academic Medical Center, Meibergdreef 9, 1100 DD, Amsterdam, The Netherlands
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Li X, Kramer MC, Damman P, van der Wal AC, Grundeken MJ, van Straalen JP, Koch KT, Henriques JP, Baan J, Vis MM, Piek JJ, Fischer JC, Tijssen JGP, de Winter RJ. Older coronary thrombus is an independent predictor of 1-year mortality in acute myocardial infarction. Eur J Clin Invest 2016; 46:501-10. [PMID: 26988709 DOI: 10.1111/eci.12619] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/21/2015] [Accepted: 03/09/2016] [Indexed: 12/22/2022]
Abstract
BACKGROUND We have previously shown that older thrombus is associated with a twofold higher long-term mortality in ST-segment elevation myocardial infarction (STEMI) patients after primary percutaneous coronary intervention (pPCI). We evaluated whether the addition of the presence of older thrombus to a multimarker model would result in increased predictive power for 1-year mortality in STEMI patients. METHODS The study population (n = 1442) consists of STEMI patients treated with thrombus aspiration during pPCI. Patients were included if aspirated thrombus material could histopathologically be classified according to thrombus age (n = 870) and laboratory measurements of biomarkers (cardiac troponin T, glucose, N-terminal pro-brain natriuretic peptide, estimated glomerular filtration rate and C-reactive protein) were available. The additional prognostic value of the presence of older thrombus beyond multiple biomarkers and established clinical risk factors was evaluated using multivariate Cox regression models. RESULTS Serum biomarker concentrations were similar between patients with fresh and older thrombus. Sixty patients (7%) died within 1 year. The presence of older thrombus remained strongly associated with mortality at 1 year after multivariable adjustment for multiple biomarkers and established clinical risk factors. Addition of older thrombus to either a model including clinical risk factors and biomarkers or a model including solely biomarkers resulted in significant increases in the discriminative value, evidenced by net reclassification improvement and integrated discriminative improvement. CONCLUSIONS The presence of older thrombus provides independent complementary information to a multimarker model including established clinical risk factors and multiple biomarkers for predicting 1-year mortality in STEMI patients treated with pPCI and thrombus aspiration.
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Affiliation(s)
- Xiaofei Li
- Department of Medical Sciences, Cardiology, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands
| | - Miranda C Kramer
- Department of Medical Sciences, Cardiology, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands
| | - Peter Damman
- Department of Medical Sciences, Cardiology, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands
| | - Allard C van der Wal
- Department of Medical Sciences, Clinical Chemistry, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands
| | - Maik J Grundeken
- Department of Medical Sciences, Cardiology, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands
| | - Jan P van Straalen
- Departments of Medical Sciences, Pathology, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands
| | - Karel T Koch
- Department of Medical Sciences, Cardiology, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands
| | - Jose P Henriques
- Department of Medical Sciences, Cardiology, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands
| | - Jan Baan
- Department of Medical Sciences, Cardiology, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands
| | - Marije M Vis
- Department of Medical Sciences, Cardiology, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands
| | - Jan J Piek
- Department of Medical Sciences, Cardiology, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands
| | - Johan C Fischer
- Departments of Medical Sciences, Pathology, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands
| | - Jan G P Tijssen
- Department of Medical Sciences, Cardiology, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands
| | - Robbert J de Winter
- Department of Medical Sciences, Cardiology, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands
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Mocking RJT, Figueroa CA, Rive MM, Geugies H, Servaas MN, Assies J, Koeter MWJ, Vaz FM, Wichers M, van Straalen JP, de Raedt R, Bockting CLH, Harmer CJ, Schene AH, Ruhé HG. Vulnerability for new episodes in recurrent major depressive disorder: protocol for the longitudinal DELTA-neuroimaging cohort study. BMJ Open 2016; 6:e009510. [PMID: 26932139 PMCID: PMC4785288 DOI: 10.1136/bmjopen-2015-009510] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
INTRODUCTION Major depressive disorder (MDD) is widely prevalent and severely disabling, mainly due to its recurrent nature. A better understanding of the mechanisms underlying MDD-recurrence may help to identify high-risk patients and to improve the preventive treatment they need. MDD-recurrence has been considered from various levels of perspective including symptomatology, affective neuropsychology, brain circuitry and endocrinology/metabolism. However, MDD-recurrence understanding is limited, because these perspectives have been studied mainly in isolation, cross-sectionally in depressed patients. Therefore, we aim at improving MDD-recurrence understanding by studying these four selected perspectives in combination and prospectively during remission. METHODS AND ANALYSIS In a cohort design, we will include 60 remitted, unipolar, unmedicated, recurrent MDD-participants (35-65 years) with ≥ 2 MDD-episodes. At baseline, we will compare the MDD-participants with 40 matched controls. Subsequently, we will follow-up the MDD-participants for 2.5 years while monitoring recurrences. We will invite participants with a recurrence to repeat baseline measurements, together with matched remitted MDD-participants. Measurements include questionnaires, sad mood-induction, lifestyle/diet, 3 T structural (T1-weighted and diffusion tensor imaging) and blood-oxygen-level-dependent functional MRI (fMRI) and MR-spectroscopy. fMRI focusses on resting state, reward/aversive-related learning and emotion regulation. With affective neuropsychological tasks we will test emotional processing. Moreover, we will assess endocrinology (salivary hypothalamic-pituitary-adrenal-axis cortisol and dehydroepiandrosterone-sulfate) and metabolism (metabolomics including polyunsaturated fatty acids), and store blood for, for example, inflammation analyses, genomics and proteomics. Finally, we will perform repeated momentary daily assessments using experience sampling methods at baseline. We will integrate measures to test: (1) differences between MDD-participants and controls; (2) associations of baseline measures with retro/prospective recurrence-rates; and (3) repeated measures changes during follow-up recurrence. This data set will allow us to study different predictors of recurrence in combination. ETHICS AND DISSEMINATION The local ethics committee approved this study (AMC-METC-Nr.:11/050). We will submit results for publication in peer-reviewed journals and presentation at (inter)national scientific meetings. TRIAL REGISTRATION NUMBER NTR3768.
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Affiliation(s)
- Roel J T Mocking
- Department of Psychiatry, Academic Medical Center, University of Amsterdam, The Netherlands
| | - Caroline A Figueroa
- Department of Psychiatry, Academic Medical Center, University of Amsterdam, The Netherlands
| | - Maria M Rive
- Department of Psychiatry, Academic Medical Center, University of Amsterdam, The Netherlands
| | - Hanneke Geugies
- University of Groningen, Neuroimaging Center, University Medical Center Groningen, The Netherlands
- Program for Mood and Anxiety Disorders, Department of Psychiatry, University of Groningen, University Medical Center Groningen, The Netherlands
| | - Michelle N Servaas
- University of Groningen, Neuroimaging Center, University Medical Center Groningen, The Netherlands
- Program for Mood and Anxiety Disorders, Department of Psychiatry, University of Groningen, University Medical Center Groningen, The Netherlands
| | - Johanna Assies
- Department of Psychiatry, Academic Medical Center, University of Amsterdam, The Netherlands
| | - Maarten W J Koeter
- Department of Psychiatry, Academic Medical Center, University of Amsterdam, The Netherlands
| | - Frédéric M Vaz
- Laboratory Genetic Metabolic Disease, Academic Medical Center, University of Amsterdam, The Netherlands
| | - Marieke Wichers
- University of Groningen, Interdisciplinary Center Psychopathology and Emotion regulation (ICPE), University Medical Center Groningen, The Netherlands
| | - Jan P van Straalen
- Laboratory of General Clinical Chemistry, Academic Medical Center, University of Amsterdam, The Netherlands
| | - Rudi de Raedt
- Department of Experimental Clinical and Health Psychology, Ghent University, Belgium
| | - Claudi L H Bockting
- Department of Clinical Psychology, University of Groningen, Groningen, The Netherlands
- Department of Clinical and Health Psychology, Utrecht University, Utrecht, The Netherlands
| | - Catherine J Harmer
- Department of Psychiatry, University of Oxford, Warneford Hospital, Oxford, UK
| | - Aart H Schene
- Department of Psychiatry, Academic Medical Center, University of Amsterdam, The Netherlands
- Department of Psychiatry, Radboud University Medical Center, Nijmegen, The Netherlands
- Donders Institute for Brain, Cognition and Behavior, Radboud University Nijmegen, Nijmegen, The Netherlands
| | - Henricus G Ruhé
- Department of Psychiatry, Academic Medical Center, University of Amsterdam, The Netherlands
- University of Groningen, Neuroimaging Center, University Medical Center Groningen, The Netherlands
- Program for Mood and Anxiety Disorders, Department of Psychiatry, University of Groningen, University Medical Center Groningen, The Netherlands
- University of Groningen, Interdisciplinary Center Psychopathology and Emotion regulation (ICPE), University Medical Center Groningen, The Netherlands
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Kramer G, Woolerton Y, van Straalen JP, Vissers JPC, Dekker N, Langridge JI, Beynon RJ, Speijer D, Sturk A, Aerts JMFG. Accuracy and Reproducibility in Quantification of Plasma Protein Concentrations by Mass Spectrometry without the Use of Isotopic Standards. PLoS One 2015; 10:e0140097. [PMID: 26474480 PMCID: PMC4608811 DOI: 10.1371/journal.pone.0140097] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2015] [Accepted: 09/22/2015] [Indexed: 12/28/2022] Open
Abstract
Background Quantitative proteomic analysis with mass spectrometry holds great promise for simultaneously quantifying proteins in various biosamples, such as human plasma. Thus far, studies addressing the reproducible measurement of endogenous protein concentrations in human plasma have focussed on targeted analyses employing isotopically labelled standards. Non-targeted proteomics, on the other hand, has been less employed to this end, even though it has been instrumental in discovery proteomics, generating large datasets in multiple fields of research. Results Using a non-targeted mass spectrometric assay (LCMSE), we quantified abundant plasma proteins (43 mg/mL—40 ug/mL range) in human blood plasma specimens from 30 healthy volunteers and one blood serum sample (ProteomeXchange: PXD000347). Quantitative results were obtained by label-free mass spectrometry using a single internal standard to estimate protein concentrations. This approach resulted in quantitative results for 59 proteins (cut off ≥11 samples quantified) of which 41 proteins were quantified in all 31 samples and 23 of these with an inter-assay variability of ≤ 20%. Results for 7 apolipoproteins were compared with those obtained using isotope-labelled standards, while 12 proteins were compared to routine immunoassays. Comparison of quantitative data obtained by LCMSE and immunoassays showed good to excellent correlations in relative protein abundance (r = 0.72–0.96) and comparable median concentrations for 8 out of 12 proteins tested. Plasma concentrations of 56 proteins determined by LCMSE were of similar accuracy as those reported by targeted studies and 7 apolipoproteins quantified by isotope-labelled standards, when compared to reference concentrations from literature. Conclusions This study shows that LCMSE offers good quantification of relative abundance as well as reasonable estimations of concentrations of abundant plasma proteins.
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Affiliation(s)
- Gertjan Kramer
- Department of Medical Biochemistry, Academic Medical Centre, University of Amsterdam, Amsterdam, the Netherlands
- * E-mail:
| | - Yvonne Woolerton
- Centre for Proteome Research, Institute of Integrative Biology, University of Liverpool, Liverpool, United Kingdom
| | - Jan P. van Straalen
- Department of Clinical Chemistry, Academic Medical Centre, University of Amsterdam, Amsterdam, the Netherlands
| | | | - Nick Dekker
- Department of Medical Biochemistry, Academic Medical Centre, University of Amsterdam, Amsterdam, the Netherlands
| | | | - Robert J. Beynon
- Centre for Proteome Research, Institute of Integrative Biology, University of Liverpool, Liverpool, United Kingdom
| | - Dave Speijer
- Department of Medical Biochemistry, Academic Medical Centre, University of Amsterdam, Amsterdam, the Netherlands
| | - Auguste Sturk
- Department of Clinical Chemistry, Academic Medical Centre, University of Amsterdam, Amsterdam, the Netherlands
| | - Johannes M. F. G. Aerts
- Department of Medical Biochemistry, Academic Medical Centre, University of Amsterdam, Amsterdam, the Netherlands
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Woudstra P, Damman P, Kuijt WJ, Kikkert WJ, Grundeken MJ, van Brussel PM, Stroobants AK, van Straalen JP, Fischer JC, Koch KT, Henriques JPS, Piek JJ, Tijssen JGP, de Winter RJ. Admission lipoprotein-associated phospholipase A2 activity is not associated with long-term clinical outcomes after ST-segment elevation myocardial infarction. PLoS One 2014; 9:e96251. [PMID: 24788873 PMCID: PMC4006846 DOI: 10.1371/journal.pone.0096251] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2013] [Accepted: 04/07/2014] [Indexed: 12/31/2022] Open
Abstract
Background Lipoprotein-associated phospholipase A2 (Lp-PLA2) activity is a biomarker predicting cardiovascular diseases in a real-world. However, the prognostic value in patients undergoing primary percutaneous coronary intervention (pPCI) for ST-segment elevation myocardial infarction (STEMI) on long-term clinical outcomes is unknown. Methods Lp-PLA2 activity was measured in samples obtained prior to pPCI from consecutive STEMI patients in a high-volume intervention center from 2005 until 2007. Five years all-cause mortality was estimated with the Kaplan-Meier method and compared among tertiles of Lp-PLA2 activity during complete follow-up and with a landmark at 30 days. In a subpopulation clinical endpoints were assessed at three years. The prognostic value of Lp-PLA2, in addition to the Thrombolysis In Myocardial Infarction or multimarker risk score, was assessed in multivariable Cox regression. Results The cohort (n = 987) was divided into tertiles (low <144, intermediate 144–179, and high >179 nmol/min/mL). Among the tertiles differences in baseline characteristics associated with long-term mortality were observed. However, no significant differences in five years mortality in association with Lp-PLA2 activity levels were found; intermediate versus low Lp-PLA2 (HR 0.97; CI 95% 0.68–1.40; p = 0.88) or high versus low Lp-PLA2 (HR 0.75; CI 95% 0.51–1.11; p = 0.15). Both in a landmark analysis and after adjustments for the established risk scores and selection of cases with biomarkers obtained, non-significant differences among the tertiles were observed. In the subpopulation no significant differences in clinical endpoints were observed among the tertiles. Conclusion Lp-PLA2 activity levels at admission prior to pPCI in STEMI patients are not associated with the incidence of short and/or long-term clinical endpoints. Lp-PLA2 as an independent and clinically useful biomarker in the risk stratification of STEMI patients still remains to be proven.
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Affiliation(s)
- Pier Woudstra
- Heart Center, Academic Medical Center – University of Amsterdam, Amsterdam, The Netherlands
| | - Peter Damman
- Heart Center, Academic Medical Center – University of Amsterdam, Amsterdam, The Netherlands
| | - Wichert J. Kuijt
- Heart Center, Academic Medical Center – University of Amsterdam, Amsterdam, The Netherlands
| | - Wouter J. Kikkert
- Heart Center, Academic Medical Center – University of Amsterdam, Amsterdam, The Netherlands
| | - Maik J. Grundeken
- Heart Center, Academic Medical Center – University of Amsterdam, Amsterdam, The Netherlands
| | - Peter M. van Brussel
- Heart Center, Academic Medical Center – University of Amsterdam, Amsterdam, The Netherlands
| | - An K. Stroobants
- Department of Clinical Chemistry, Academic Medical Center – University of Amsterdam, Amsterdam, The Netherlands
| | - Jan P. van Straalen
- Department of Clinical Chemistry, Academic Medical Center – University of Amsterdam, Amsterdam, The Netherlands
| | - Johan C. Fischer
- Department of Clinical Chemistry, Academic Medical Center – University of Amsterdam, Amsterdam, The Netherlands
| | - Karel T. Koch
- Heart Center, Academic Medical Center – University of Amsterdam, Amsterdam, The Netherlands
| | - José P. S. Henriques
- Heart Center, Academic Medical Center – University of Amsterdam, Amsterdam, The Netherlands
| | - Jan J. Piek
- Heart Center, Academic Medical Center – University of Amsterdam, Amsterdam, The Netherlands
| | - Jan G. P. Tijssen
- Heart Center, Academic Medical Center – University of Amsterdam, Amsterdam, The Netherlands
| | - Robbert J. de Winter
- Heart Center, Academic Medical Center – University of Amsterdam, Amsterdam, The Netherlands
- * E-mail:
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Agyemang C, Beune E, Meeks K, Owusu-Dabo E, Agyei-Baffour P, Aikins ADG, Dodoo F, Smeeth L, Addo J, Mockenhaupt FP, Amoah SK, Schulze MB, Danquah I, Spranger J, Nicolaou M, Klipstein-Grobusch K, Burr T, Henneman P, Mannens MM, van Straalen JP, Bahendeka S, Zwinderman AH, Kunst AE, Stronks K. Rationale and cross-sectional study design of the Research on Obesity and type 2 Diabetes among African Migrants: the RODAM study. BMJ Open 2014; 4:e004877. [PMID: 24657884 PMCID: PMC3963103 DOI: 10.1136/bmjopen-2014-004877] [Citation(s) in RCA: 88] [Impact Index Per Article: 8.8] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
INTRODUCTION Obesity and type 2 diabetes (T2D) are highly prevalent among African migrants compared with European descent populations. The underlying reasons still remain a puzzle. Gene-environmental interaction is now seen as a potential plausible factor contributing to the high prevalence of obesity and T2D, but has not yet been investigated. The overall aim of the Research on Obesity and Diabetes among African Migrants (RODAM) project is to understand the reasons for the high prevalence of obesity and T2D among sub-Saharan Africans in diaspora by (1) studying the complex interplay between environment (eg, lifestyle), healthcare, biochemical and (epi)genetic factors, and their relative contributions to the high prevalence of obesity and T2D; (2) to identify specific risk factors within these broad categories to guide intervention programmes and (3) to provide a basic knowledge for improving diagnosis and treatment. METHODS AND ANALYSIS RODAM is a multicentre cross-sectional study among homogenous sub-Saharan African participants (ie, Ghanaians) aged >25 years living in rural and urban Ghana, the Netherlands, Germany and the UK (http://rod-am.eu/). Standardised data on the main outcomes, genetic and non-genetic factors are collected in all locations. The aim is to recruit 6250 individuals comprising five subgroups of 1250 individuals from each site. In Ghana, Kumasi and Obuasi (urban stratum) and villages in the Ashanti region (rural stratum) are served as recruitment sites. In Europe, Ghanaian migrants are selected through the municipality or Ghanaian organisations registers. ETHICS AND DISSEMINATION Ethical approval has been obtained in all sites. This paper gives an overview of the rationale, conceptual framework and methods of the study. The differences across locations will allow us to gain insight into genetic and non-genetic factors contributing to the occurrence of obesity and T2D and will inform targeted intervention and prevention programmes, and provide the basis for improving diagnosis and treatment in these populations and beyond.
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Affiliation(s)
- Charles Agyemang
- Department of Public Health, Academic Medical Centre (AMC), University of Amsterdam, Amsterdam, The Netherlands
| | - Erik Beune
- Department of Public Health, Academic Medical Centre (AMC), University of Amsterdam, Amsterdam, The Netherlands
| | - Karlijn Meeks
- Department of Public Health, Academic Medical Centre (AMC), University of Amsterdam, Amsterdam, The Netherlands
| | - Ellis Owusu-Dabo
- Faculty of Science, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Peter Agyei-Baffour
- Faculty of Science, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Ama de-Graft Aikins
- The Regional Institute for Population Studies: University of Ghana, Legon, Ghana
| | - Francis Dodoo
- The Regional Institute for Population Studies: University of Ghana, Legon, Ghana
| | - Liam Smeeth
- Department of Non-communicable Disease Epidemiology, London School of Hygiene and Tropical Medicine, London, UK
| | - Juliet Addo
- Department of Non-communicable Disease Epidemiology, London School of Hygiene and Tropical Medicine, London, UK
| | - Frank P Mockenhaupt
- Institute of Tropical Medicine and International Health, Charité—Universitätsmedizin Berlin, Berlin, Germany
| | - Stephen K Amoah
- Institute of Tropical Medicine and International Health, Charité—Universitätsmedizin Berlin, Berlin, Germany
| | - Matthias B Schulze
- Department of Molecular Epidemiology, German Institute of Human Nutrition (DIfE), Potsdam-Rehbruecke, Nuthetal, Germany
| | - Ina Danquah
- Department of Molecular Epidemiology, German Institute of Human Nutrition (DIfE), Potsdam-Rehbruecke, Nuthetal, Germany
| | - Joachim Spranger
- Department of Endocrinology, Diabetes and Nutrition, Charité—Universitätsmedizin Berlin, Berlin, Germany
| | - Mary Nicolaou
- Department of Public Health, Academic Medical Centre (AMC), University of Amsterdam, Amsterdam, The Netherlands
| | - Kerstin Klipstein-Grobusch
- Julius Global Health, Julius Center for Health Sciences and Primary Care, University Medical Center, Utrecht, The Netherlands
- Division of Epidemiology and Biostatistics, School of Public Health, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Tom Burr
- Source BioScience, Nottingham, UK
| | - Peter Henneman
- Department of Clinical Genetics, Academic Medical Centre, Amsterdam, The Netherlands
| | - Marcel M Mannens
- Department of Clinical Genetics, Academic Medical Centre, Amsterdam, The Netherlands
| | - Jan P van Straalen
- Department of Clinical Chemistry, Academic Medical Centre, Amsterdam, The Netherlands
| | - Silver Bahendeka
- International Diabetes Federation, Africa Region, Kampala, Uganda
| | - A H Zwinderman
- Department of Clinical Epidemiology, Bioinformatics, and Biostatistics, Academic Medical Centre, University of Amsterdam, Amsterdam, The Netherlands
| | - Anton E Kunst
- Department of Public Health, Academic Medical Centre (AMC), University of Amsterdam, Amsterdam, The Netherlands
| | - Karien Stronks
- Department of Public Health, Academic Medical Centre (AMC), University of Amsterdam, Amsterdam, The Netherlands
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Damman P, Kempf T, Windhausen F, van Straalen JP, Guba-Quint A, Fischer J, Tijssen JG, Wollert KC, de Winter RJ, Hirsch A. Growth-differentiation factor 15 for long-term prognostication in patients with non-ST-elevation acute coronary syndrome: An Invasive versus Conservative Treatment in Unstable coronary Syndromes (ICTUS) substudy. Int J Cardiol 2014; 172:356-63. [DOI: 10.1016/j.ijcard.2014.01.025] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/01/2012] [Revised: 12/16/2013] [Accepted: 01/12/2014] [Indexed: 10/25/2022]
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Determann RM, Royakkers AANM, Schaefers J, de Boer AM, Binnekade JM, van Straalen JP, Schultz MJ. Serum levels of N-terminal proB-type natriuretic peptide in mechanically ventilated critically ill patients--relation to tidal volume size and development of acute respiratory distress syndrome. BMC Pulm Med 2013; 13:42. [PMID: 23837838 PMCID: PMC3717013 DOI: 10.1186/1471-2466-13-42] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2012] [Accepted: 07/05/2013] [Indexed: 01/11/2023] Open
Abstract
Background Serum levels of N–terminal proB–type natriuretic peptide (NT–proBNP) are elevated in patients acute respiratory distress syndrome (ARDS). Recent studies showed a lower incidence of acute cor pulmonale in ARDS patients ventilated with lower tidal volumes. Consequently, serum levels of NT–proBNP may be lower in these patients. We investigated the relation between serum levels of NT–proBNP and tidal volumes in critically ill patients without ARDS at the onset of mechanical ventilation. Methods Secondary analysis of a randomized controlled trial of lower versus conventional tidal volumes in patients without ARDS. NT–pro BNP were measured in stored serum samples. Serial serum levels of NT–pro BNP were analyzed controlling for acute kidney injury, cumulative fluid balance and presence of brain injury. The primary outcome was the effect of tidal volume size on serum levels of NT–proBNP. Secondary outcome was the association with development of ARDS. Results Samples from 150 patients were analyzed. No relation was found between serum levels of NT–pro BNP and tidal volume size. However, NT-proBNP levels were increasing in patients who developed ARDS. In addition, higher levels were observed in patients with acute kidney injury, and in patients with a more positive cumulative fluid balance. Conclusion Serum levels of NT–proBNP are independent of tidal volume size, but are increasing in patients who develop ARDS.
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Affiliation(s)
- Rogier M Determann
- Department of Intensive Care Medicine, Academic Medical Centre, University of Amsterdam, Meibergdreef 9, Amsterdam 1105 AZ, The Netherlands.
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Schuuring MJ, van Riel AC, Vis JC, Duffels MG, van Straalen JP, Boekholdt SM, Tijssen JG, Mulder BJ, Bouma BJ. High-sensitivity Troponin T Is Associated with Poor Outcome in Adults with Pulmonary Arterial Hypertension due to Congenital Heart Disease. CONGENIT HEART DIS 2012; 8:520-6. [DOI: 10.1111/chd.12022] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 10/25/2012] [Indexed: 11/27/2022]
Affiliation(s)
- Mark J. Schuuring
- Department of Cardiology; Academic Medical Center; Amsterdam The Netherlands
- Interuniversity Cardiology Institute of the Netherlands; Utrecht The Netherlands
| | - Annelieke C.M.J. van Riel
- Department of Cardiology; Academic Medical Center; Amsterdam The Netherlands
- Interuniversity Cardiology Institute of the Netherlands; Utrecht The Netherlands
| | - Jeroen C. Vis
- Department of Cardiology; Academic Medical Center; Amsterdam The Netherlands
| | - Marielle G. Duffels
- Department of Cardiology; Academic Medical Center; Amsterdam The Netherlands
| | - Jan P. van Straalen
- Department of Clinical Chemistry; Academic Medical Center; Amsterdam The Netherlands
| | | | - Jan G.P. Tijssen
- Department of Cardiology; Academic Medical Center; Amsterdam The Netherlands
| | - Barbara J.M. Mulder
- Department of Cardiology; Academic Medical Center; Amsterdam The Netherlands
| | - Berto J. Bouma
- Department of Cardiology; Academic Medical Center; Amsterdam The Netherlands
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Vrouenraets SME, Fux CA, Wit FWNM, Garcia EF, Brinkman K, Hoek FJ, van Straalen JP, Furrer H, Krediet RT, Reiss P. A comparison of measured and estimated glomerular filtration rate in successfully treated HIV-patients with preserved renal function. Clin Nephrol 2012. [PMID: 22445475 DOI: 10.5424/cn107214] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
BACKGROUND Monitoring of renal function becomes increasingly important in the aging population of HIV-1 infected patients. We compared Cockroft & Gault (C&G), Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI), Modification of Diet in Renal Disease (MDRD), Cystatin C- and 24 h urine-based estimated GFR (eGFR) with the gold standard, measured GFR (mGFR) using [125I]-iothalamate. METHODS Substudy within a randomized, multinational trial comparing continuing zidovudine/ lamivudine with switching to tenofovir/ emtricitabine in patients with suppressed HIV-1 infection. Accuracy (defined as the mean difference between eGFR and mGFR) and precision (defined as standard deviation (SD) of the mean difference between eGFR and mGFR) of the eGFRs were calculated using linear regression and Bland & Altman analysis. RESULTS We included 19 patients, 18 men, 15 Caucasian, mean (SD) age 46.0 y (± 8.9) and BMI 23.9 kg/m2 (± 3.0). Mean (SD) mGFR was 102 ml/min/1.73 m2 (± 19), 4 patients had mild renal dysfunction. All eGFRs tended to underestimate true GFR, with best accuracy for C&G (-1 ml/min/1.73 m2), CKD-EPI (-1 ml/min/1.73 m2), 24 hcreatinine clearance (-2 ml/min/1.73 m2) and MDRD-6 (0 ml/min/1.73 m2), and worst for cystatin C-based (-9 ml/min/1.73 m2) and MDRD-4 estimations (-10 ml/min/1.73 m2). Accuracy worsened at higher mGFR, but was not significantly influenced by age. C&G tended to overestimate at higher BMI. Precision was comparable for all GFR estimations. CONCLUSIONS In this limited number of patients with preserved renal function and suppressed HIV-infection C&G and CKD-EPI appeared to be the best reflection of real GFR and most practical tool for monitoring GFR.
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Affiliation(s)
- Saskia M E Vrouenraets
- Amsterdam Institute for Global Health and Development, Academic Medical Center, Amsterdam, the Netherlands.
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Hoebers LP, Damman P, Claessen BE, Vis MM, Baan J, van Straalen JP, Fischer J, Koch KT, Tijssen JG, de Winter RJ, Piek JJ, Henriques JP. Predictive value of plasma glucose level on admission for short and long term mortality in patients with ST-elevation myocardial infarction treated with primary percutaneous coronary intervention. Am J Cardiol 2012; 109:53-9. [PMID: 21944676 DOI: 10.1016/j.amjcard.2011.07.067] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2011] [Revised: 07/29/2011] [Accepted: 07/29/2011] [Indexed: 01/08/2023]
Abstract
Published reports describe a strong association between plasma glucose levels on admission and mortality in patients who undergo primary percutaneous coronary intervention for ST-segment elevation myocardial infarction. The aim of this study was to assess the predictive value of admission glucose levels for early and late mortality. From 2005 to 2007, 1,646 patients underwent primary percutaneous coronary intervention for ST-segment elevation myocardial infarction and were stratified according to admission plasma glucose level in category 1 (<7.8 mmol/L; n = 747), category 2 (7.8 to 11.0 mmol/L; n = 620), or category 3 (>11 mmol/L; n = 279). Event rates were estimated using the Kaplan-Meier method. A landmark survival analysis to 3-year follow-up was performed, with a landmark set at 30 days. Time-extended Cox regression was used to assess the predictive value of admission glucose levels. Furthermore, a stratified analysis was performed for known diabetes mellitus status at admission. Thirty-day mortality was 2.4% in category 1, 6% in category 2, and 22% in category 3 (p <0.01). Three-year mortality in 30-day survivors was 5.9% in category 1, 8.2% in category 2, and 7.1% in category 3 (p = 0.27). Glucose level on admission was a strong predictor of 30-day mortality: for every 1 mmol/L increase, the hazard increased by 14% (hazard ratio 1.14, 95% confidence interval 1.09 to 1.19, p <0.01) in patients without diabetes, by 12% (hazard ratio 1.12, 95% confidence interval 1.05 to 1.19, p <0.01) in those with diabetes, and by 13% (hazard ratio 1.13, 95% confidence interval 1.09 to 1.17, p <0.01) in the total cohort. After 30 days, glucose level at admission lost its predictive value. In conclusion, in patients with and those without diabetes, glucose level at admission is an independent predictor of early but not late mortality.
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Damman P, Kikkert WJ, Woudstra P, Kuijt WJ, Grundeken MJD, Harskamp RE, Baan J, Vis MM, Henriques JPS, Piek JJ, van Straalen JP, Fischer JC, Tijssen JGP, de Winter RJ. Gender difference in the prognostic value of estimated glomerular filtration rate at admission in ST-segment elevation myocardial infarction: a prospective cohort study. BMJ Open 2012; 2:e000322. [PMID: 22389358 PMCID: PMC3293134 DOI: 10.1136/bmjopen-2011-000322] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
OBJECTIVE To evaluate gender differences in the prognostic value of renal function for mortality in ST-segment elevation myocardial infarction (STEMI) patients undergoing primary percutaneous coronary intervention (PPCI). DESIGN Prospective single-center cohort. SETTING Single tertiary referral center in Amsterdam, The Netherlands. Patients consecutive STEMI patients undergoing PPCI (1412 men and 558 women). MAIN OUTCOME MEASURE The authors calculated adjusted HRs for 3-year all-cause mortality according to the presence of a reduced renal function (estimated glomerular filtration rate <60 ml/min) using Cox proportional hazards models. In order to investigate a possible gender difference in the prognostic value of a reduced renal function, a comparison was made between the HRs of male and female patients and an interaction term was added to the model and tested for significance. Adjustments were made for age, body mass index, history of diabetes or hypertension, systolic blood pressure and heart rate, anterior myocardial infarction and time to treatment. RESULTS In male patients, a reduced renal function was associated with increased 3-year mortality (adjusted HR 6.31, 95% CI 3.74 to 10.63, p<0.001). A reduced renal function was associated with a twofold increase in the mortality hazard in female patients (adjusted HR 2.22, 95% CI 1.25 to 3.94, p=0.006). CONCLUSIONS In this large single-centre registry of STEMI patients undergoing PPCI, renal dysfunction as assessed by estimated glomerular filtration rate had prognostic significance for mortality in both male and female patients.
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Affiliation(s)
- Peter Damman
- Department of Cardiology, Academic Medical Center - University of Amsterdam, Amsterdam, The Netherlands
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van der Zee PM, Cornel JH, Bholasingh R, Fischer JC, van Straalen JP, De Winter RJ. N-terminal pro B-type natriuretic peptide identifies patients with chest pain at high long-term cardiovascular risk. Am J Med 2011; 124:961-9. [PMID: 21962317 DOI: 10.1016/j.amjmed.2011.05.026] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [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: 02/07/2011] [Revised: 05/11/2011] [Accepted: 05/11/2011] [Indexed: 12/22/2022]
Abstract
BACKGROUND Little is known about the long-term prognostic value of N-terminal pro B-type natriuretic peptide (NT-proBNP) and C-reactive protein (CRP) in low-risk patients with chest pain. METHODS Between June 1997 and January 2000, a standard rule-out protocol was performed in patients presenting to the emergency department within 6 hours of onset of chest pain with a normal or nondiagnostic electrocardiogram (ECG) on admission at the Academic Medical Center Amsterdam, VU University Medical Center Amsterdam and Medical Center Alkmaar, The Netherlands. Patients with acute coronary syndrome were identified by troponin T, recurrent angina, and serial ECGs. CRP and NT-proBNP on admission were measured using standardized methods. RESULTS A total of 524 patients were included (145 with acute coronary syndrome and 379 with rule-out acute coronary syndrome). Long-term follow-up was successfully carried out in 96% of the study population. Death occurred in 78 patients (15%), 43 (11%) in the rule-out acute coronary syndrome group and 35 (24%) in the acute coronary syndrome group (P<.001). In the rule-out acute coronary syndrome group, 21 patients (42%) died of a cardiovascular cause compared with 24 patients (69%) in the acute coronary syndrome group (P<.001). In multivariate Cox regression analysis, age more than 65 years, previous myocardial infarction, known chronic heart failure, a nondiagnostic ECG on admission, and elevated NT-proBNP levels (>87 pg/mL, as derived from the receiver operating characteristic curve) were independent predictors of long-term cardiovascular mortality in the rule-out acute coronary syndrome group. In the acute coronary syndrome group, these predictors were age more than 65 years, documented coronary artery disease, and elevated NT-proBNP levels. Elevated levels of CRP were an independent predictor for cardiovascular mortality in patients with rule-out acute coronary syndrome at 3-year follow-up only. In patients with rule-out acute coronary syndrome with normal CRP and NT-proBNP levels, the cardiovascular mortality incidence rate was 4.7 per 1000 person-years, compared with a death rate of 20 in patients with both biomarkers elevated, which was comparable to the 17.9 per 1000 person-years incidence rate in patients with acute coronary syndrome. CONCLUSION A positive biomarker panel discriminates patients with rule-out acute coronary syndrome chest pain with a normal or nondiagnostic ECG who have a high risk for long-term cardiovascular mortality.
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Damman P, Beijk MAM, Kuijt WJ, Verouden NJW, van Geloven N, Henriques JPS, Baan J, Vis MM, Meuwissen M, van Straalen JP, Fischer J, Koch KT, Piek JJ, Tijssen JGP, de Winter RJ. Multiple biomarkers at admission significantly improve the prediction of mortality in patients undergoing primary percutaneous coronary intervention for acute ST-segment elevation myocardial infarction. J Am Coll Cardiol 2011; 57:29-36. [PMID: 21185497 DOI: 10.1016/j.jacc.2010.06.053] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.9] [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: 02/21/2010] [Revised: 05/20/2010] [Accepted: 06/21/2010] [Indexed: 10/18/2022]
Abstract
OBJECTIVES We investigated whether multiple biomarkers improve prognostication in ST-segment elevation myocardial infarction (STEMI) patients undergoing primary percutaneous coronary intervention. BACKGROUND Few data exist on the prognostic value of combined biomarkers. METHODS We used data from 1,034 STEMI patients undergoing primary percutaneous coronary intervention in a high-volume percutaneous coronary intervention center in the Netherlands and investigated whether combining N-terminal pro-brain natriuretic peptide, glucose, C-reactive protein, estimated glomerular filtration rate, and cardiac troponin T improved the prediction of mortality. A risk score was developed based on the strongest predicting biomarkers in multivariate Cox regression. The additional prognostic value of the strongest predicting biomarkers to the established prognostic factors (age, body weight, diabetes, hypertension, systolic blood pressure, heart rate, anterior myocardial infarction, and time to treatment) was assessed in multivariable Cox regression. RESULTS During follow-up (median, 901 days), 120 of the 1,034 patients died. In Cox regression, glucose, estimated glomerular filtration rate, and N-terminal pro-brain natriuretic peptide were the strongest predictors for mortality (p < 0.05, for all). A risk score incorporating these biomarkers identified a high-risk STEMI subgroup with a significantly higher mortality when compared with an intermediate- or low-risk subgroup (p < 0.001). Addition of the 3 biomarkers to established prognostic factors significantly improved prediction for mortality, as shown by the net reclassification improvement (0.481, p < 0.001) [corrected] and integrated discrimination improvement (0.0226, p = 0.03) [corrected]. CONCLUSIONS Our data suggest that addition of a multimarker to a model including established risk factors improves the prediction of mortality in STEMI patients undergoing primary percutaneous coronary intervention. Furthermore, the use of a simple risk score based on these biomarkers identifies a high-risk subgroup.
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Affiliation(s)
- Peter Damman
- Department of Cardiology, Academic Medical Center–University of Amsterdam, Amsterdam, the Netherlands
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Wiersma JJ, van der Zee PM, van Straalen JP, Fischer JC, van Eck-Smit BL, Tijssen JG, Trip MD, Piek JJ, Verberne HJ. NT-pro-BNP is associated with inducible myocardial ischemia in mildly symptomatic type 2 diabetic patients. Int J Cardiol 2010; 145:295-296. [DOI: 10.1016/j.ijcard.2009.10.035] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/25/2009] [Accepted: 10/17/2009] [Indexed: 11/26/2022]
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Verouden NJ, Haeck JD, Kuijt WJ, van Geloven N, Koch KT, Henriques JP, Baan J, Vis MM, van Straalen JP, Fischer J, Piek JJ, Tijssen JG, de Winter RJ. Comparison of the usefulness of N-terminal pro-brain natriuretic peptide to other serum biomarkers as an early predictor of ST-segment recovery after primary percutaneous coronary intervention. Am J Cardiol 2010; 105:1047-52. [PMID: 20381651 DOI: 10.1016/j.amjcard.2009.12.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/30/2009] [Revised: 12/01/2009] [Accepted: 12/01/2009] [Indexed: 10/19/2022]
Abstract
Data on the ability of serum biomarkers to predict microvascular obstruction by ST-segment recovery after primary percutaneous coronary intervention (PCI) is largely absent. Therefore, we determined the association between 5 serum biomarkers, obtained before emergency coronary angiography, and immediate ST-segment recovery in patients who had undergone primary PCI for ST-segment elevation myocardial infarction. We measured N-terminal pro-brain natriuretic peptide (NT-pro-BNP), cardiac troponin T, creatinine kinase-MB fraction, high-sensitivity C-reactive protein, and serum creatinine from blood samples obtained through the arterial sheath at the start of primary PCI. Serial 12-lead electrocardiograms were recorded in the catheterization laboratory before arterial puncture and at the end of the PCI. ST-segment recovery was defined as incomplete if <50%. Of 662 included patients with ST-segment elevation myocardial infarction, 338 (51%) had incomplete ST-segment recovery. An elevated NT-pro-BNP level (> or = 608 ng/L) was the strongest predictor of incomplete ST-segment recovery (adjusted odds ratio 2.6, 95% confidence interval 1.6 to 4.1; p <0.001) compared to other serum biomarkers and clinical predictors. An elevated NT-pro-BNP level was more strongly predictive in patients without a history of coronary artery disease or hypertension (adjusted odds ratio 4.7, 95% confidence interval 2.4 to 9.2; p <0.001). NT-pro-BNP was the best contributor to both net reclassification (0.43; p <0.001) and integrated discrimination improvement (0.04; p <0.001) when added to a multivariate model with clinical predictors of incomplete ST-segment recovery. In conclusion, NT-pro-BNP was the strongest independent predictor of ST-segment recovery at the end of primary PCI for ST-segment elevation myocardial infarction compared to the other serum biomarkers reflecting myocardial cell damage, renal function, and inflammation.
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Windhausen F, Hirsch A, Fischer J, van der Zee PM, Sanders GT, van Straalen JP, Cornel JH, Tijssen JGP, Verheugt FWA, de Winter RJ. Cystatin C for enhancement of risk stratification in non-ST elevation acute coronary syndrome patients with an increased troponin T. Clin Chem 2009; 55:1118-25. [PMID: 19359536 DOI: 10.1373/clinchem.2008.119669] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
BACKGROUND We assessed the value of cystatin C for improvement of risk stratification in patients with non-ST elevation acute coronary syndrome (nSTE-ACS) and increased cardiac troponin T (cTnT), and we compared the long-term effects of an early invasive treatment strategy (EIS) with a selective invasive treatment strategy (SIS) with regard to renal function. METHODS Patients (n = 1128) randomized to an EIS or an SIS in the ICTUS trial were stratified according to the tertiles of the cystatin C concentration at baseline. The end points were death within 4 years and spontaneous myocardial infarction (MI) within 3 years. RESULTS Mortality was 3.4%, 6.2%, and 13.5% in the first, second, and third tertiles, respectively, of cystatin C concentration (log-rank P < 0.001), and the respective rates of spontaneous MI were 5.5%, 7.5%, and 9.8% (log-rank P = 0.03). In a multivariate Cox regression analysis, the cystatin C concentration in the third quartile remained independently predictive of mortality [hazard ratio (HR), 2.04; 95% CI, 1.02-4.10; P = 0.04] and spontaneous MI (HR, 1.95; 95% CI, 1.05-3.63; P = 0.04). The mortality rate in the second tertile was lower with the EIS than with the SIS (3.8% vs 8.7%). In the third tertile, the mortality rates with the EIS and the SIS were, respectively, 15.0% and 12.2% (P for interaction = 0.04). Rates of spontaneous MI were similar for the EIS and the SIS within cystatin C tertiles (P for interaction = 0.22). CONCLUSIONS In patients with nSTE-ACS and an increased cTnT concentration, mild to moderate renal dysfunction is associated with a higher risk of death and spontaneous MI. Use of cystatin C as a serum marker of renal function may improve risk stratification.
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Affiliation(s)
- Fons Windhausen
- Department of Cardiology, Academic Medical Center, Amsterdam, The Netherlands
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Sjauw KD, Remmelink M, Baan J, Lam K, Engström AE, van der Schaaf RJ, Vis MM, Koch KT, van Straalen JP, Tijssen JG, de Mol BA, de Winter RJ, Piek JJ, Henriques JP. Left Ventricular Unloading in Acute ST-Segment Elevation Myocardial Infarction Patients Is Safe and Feasible and Provides Acute and Sustained Left Ventricular Recovery. J Am Coll Cardiol 2008; 51:1044-6. [DOI: 10.1016/j.jacc.2007.10.050] [Citation(s) in RCA: 80] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/13/2007] [Revised: 10/04/2007] [Accepted: 10/22/2007] [Indexed: 11/24/2022]
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Windhausen F, Hirsch A, Sanders GT, Cornel JH, Fischer J, van Straalen JP, Tijssen JGP, Verheugt FWA, de Winter RJ. N-terminal pro-brain natriuretic peptide for additional risk stratification in patients with non-ST-elevation acute coronary syndrome and an elevated troponin T: an Invasive versus Conservative Treatment in Unstable coronary Syndromes (ICTUS) substudy. Am Heart J 2007; 153:485-92. [PMID: 17383283 DOI: 10.1016/j.ahj.2006.12.012] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.9] [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: 08/22/2006] [Accepted: 12/17/2006] [Indexed: 11/26/2022]
Abstract
BACKGROUND New evidence has emerged that the assessment of multiple biomarkers such as cardiac troponin T (cTnT) and N-terminal pro-brain natriuretic peptide (NT-proBNP) in patients with non-ST-elevation acute coronary syndrome (nSTE-ACS) provides unique prognostic information. The purpose of this study was to assess the association between baseline NT-proBNP levels and outcome in patients who have nSTE-ACS with an elevated cTnT and to determine whether patients with elevated NT-proBNP levels benefit from an early invasive treatment strategy. METHODS Baseline samples for NT-proBNP measurements were available in 1141 patients who have nSTE-ACS with an elevated cTnT randomized to an early or a selective invasive strategy. Patients were followed-up for the occurrence of death, myocardial infarction (MI), and rehospitalization for angina. RESULTS We showed that increased levels of NT-proBNP were associated with several indicators of risk and severe coronary artery disease. Mortality by 1 year was 7.3% in the highest quartile (> or = 1170 ng/L for men, > or = 2150 ng/L for women) compared with 1.1% of patients in the lower 3 quartiles (P < .0001). N-terminal pro-brain natriuretic peptide (highest quartile vs lower 3 quartiles) was a strong independent predictor of mortality (hazard ratio 5.0, 95% CI 2.1-11.6, P = .0002). However, NT-proBNP levels were not associated with the incidence of recurrent MI by 1 year. Furthermore, we could not demonstrate a benefit of an early invasive strategy compared with a selective invasive strategy in patients with an elevated NT-proBNP level. CONCLUSIONS We confirmed that NT-proBNP is a strong independent predictor of mortality by 1 year but not of recurrent MI in patients who have nSTE-ACS with an elevated cTnT. We could not demonstrate a benefit of an early invasive strategy compared with a selective invasive strategy.
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Affiliation(s)
- Fons Windhausen
- Department of Cardiology, Academic Medical Center, Amsterdam, The Netherlands
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van der Zee PM, Verberne HJ, van Straalen JP, Sanders GTB, Van Eck-Smit BLF, de Winter RJ, Fischer JC. Ischemia-Modified Albumin Measurements in Symptom-Limited Exercise Myocardial Perfusion Scintigraphy Reflect Serum Albumin Concentrations but Not Myocardial Ischemia. Clin Chem 2005; 51:1744-6. [PMID: 16120959 DOI: 10.1373/clinchem.2005.054635] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- P Marc van der Zee
- Department of Cardiology, Academic Medical Center, Amsterdam, The Netherlands.
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de Winter RJ, Stroobants A, Koch KT, Bax M, Schotborgh CE, Mulder KJ, Sanders GT, van Straalen JP, Fischer J, Tijssen JGP, Piek JJ. Plasma N-terminal pro-B-type natriuretic peptide for prediction of death or nonfatal myocardial infarction following percutaneous coronary intervention. Am J Cardiol 2004; 94:1481-5. [PMID: 15589000 DOI: 10.1016/j.amjcard.2004.08.023] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [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] [Received: 06/07/2004] [Accepted: 08/10/2004] [Indexed: 10/26/2022]
Abstract
B-type natriuretic peptide (BNP) and the N-terminus of pro-BNP (NT-pro-BNP) have prognostic value in patients with heart failure and patients with acute coronary syndromes. Little is known about the prognostic value of baseline NT-pro-BNP alone or in combination with C-reactive protein (CRP) for clinical outcome after percutaneous coronary intervention (PCI). Within a single center registry of contemporaneous PCI, we investigated the prognostic value of baseline plasma NT-pro-BNP and CRP concentrations for the prediction of death or nonfatal myocardial infarction (MI) during 12 to 14 months of follow-up. Among 1,172 consecutive patients, the occurrence of death or MI increased significantly with baseline NT-pro-BNP before PCI (first quartile 0 of 294, second quartile 6 of 291 [2.1%], third quartile 4 of 294 [1.4%], fourth quartile 22 of 293 [7.5%)]; p <0.0001). NT-pro-BNP in the top quartile significantly predicted death (odds ratio [OR] 13.37, 95% confidence interval [CI] 4.50 to 40.38, p <0.0001) and was associated with nonfatal MI (OR 2.53, 95% CI 0.77 to 8.34, p = 0.22) An abnormal CRP was significantly associated with death (OR 3.47, 95% CI 1.26 to 9.54, p = 0.019). Stepwise multivariate logistic regression analysis identified age >65 years and NT-pro-BNP as independent significant predictors of death/MI (age OR 3.18, 95% CI 1.32 to 7.67, p = 0.01; NT-pro-BNP OR 4.57, 95% CI 2.07 to 10.10, p = 0.0001). Baseline NT-pro-BNP before PCI provides important, independent prognostic information for the occurrence of death or nonfatal MI during long-term follow-up.
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Affiliation(s)
- Robbert J de Winter
- Department of Cardiology, Academic Medical Center, University of Amsterdam, The Netherlands.
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Rittersma SZH, de Winter RJ, Koch KT, Schotborgh CE, Bax M, Heyde GS, van Straalen JP, Mulder KJ, Tijssen JGP, Sanders GT, Piek JJ. Preprocedural C-Reactive Protein Is Not Associated with Angiographic Restenosis or Target Lesion Revascularization after Coronary Artery Stent Placement. Clin Chem 2004; 50:1589-96. [PMID: 15205368 DOI: 10.1373/clinchem.2004.032656] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.6] [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: 11/06/2022]
Abstract
Abstract
Background: We assessed the predictive value of preprocedural plasma C-reactive protein (CRP) concentrations and statin therapy on 6 months angiographic and 1-year clinical outcome after nonurgent coronary stent placement.
Methods and Results: Baseline plasma high-sensitivity CRP concentrations were prospectively measured in 345 patients undergoing elective stent placement in a native coronary artery. The binary angiographic in-stent restenosis (ISR; stenosis ≥50% of vessel diameter) rate was 19% in patients with CRP values within the reference interval (≤3 mg/L) and 22% in patients with CRP >3 mg/L [odds ratio (OR) = 1.2; 95% confidence interval (CI), 0.73–2.09]. Statin therapy in a univariate analysis significantly reduced both angiographic and clinical ISR rates. Multivariate logistic regression analysis identified unstable angina, smoking, and stent length, but neither CRP concentration nor statin therapy as independent predictors for angiographic ISR. Patients with an abnormal CRP value showed a trend toward a higher risk of nonfatal myocardial infarction (3.8% vs 0.5%; OR = 7.43; 95% CI, 0.87–61.65). Target lesion revascularization rates did not differ between the two groups (9.6% vs 10.6%; OR = 1.13; 95% CI, 0.56–2.28). In multivariate analysis, male sex (OR = 0.44, 95% CI, 0.19–0.97) and statin therapy (OR = 0.26; 95% CI, 0.09–0.68) were independent predictors for the occurrence of target lesion revascularization.
Conclusions: This study demonstrated a lack of association between preprocedural plasma CRP concentrations and angiographic coronary ISR or clinically driven target lesion revascularization. Patients with an abnormal CRP concentration showed a trend toward higher risk of nonfatal myocardial infarction during 1 year of follow-up. Statin therapy was independently associated with decreased clinically driven target lesion revascularization, underlining the beneficial effects of statins on clinical outcome.
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Affiliation(s)
- Saskia Z H Rittersma
- Department of Cardiology, Academic Medical Center, University of Amsterdam, The Netherlands
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Bholasingh R, Cornel JH, Kamp O, van Straalen JP, Sanders GT, Dijksman L, Tijssen JGP, de Winter RJ. The prognostic value of markers of inflammation in patients with troponin T-negative chest pain before discharge from the emergency department. Am J Med 2003; 115:521-8. [PMID: 14599630 DOI: 10.1016/j.amjmed.2003.08.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [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: 11/28/2022]
Abstract
PURPOSE To assess the prognostic value of markers of inflammation for rule-out purposes in patients admitted to the emergency department with troponin T-negative chest pain. METHODS Patients presenting to the emergency department within 6 hours of symptom onset and who had a normal or nondiagnostic electrocardiogram were eligible. The standard rule-out protocol, which included serial creatine kinase and creatine kinase-MB measurements, was applied, and markers of inflammation (C-reactive protein, erythrocyte sedimentation rate, and total white blood cell count and differential count) were measured. The study group comprised patients with negative serial troponin T results (<0.06 microg/L) who were discharged home after unstable coronary artery disease was ruled out. Endpoints during the 6-month follow-up were cardiac death, myocardial infarction, or rehospitalization for unstable angina. RESULTS A total of 382 troponin T-negative patients were discharged, of whom 2 died, 2 had a myocardial infarction, and 7 were rehospitalized for unstable angina. A positive C-reactive protein test result (>0.3 mg/dL) was associated with future clinical events (hazard risk [HR] = 4.5; 95% confidence interval [CI]: 1.2 to 17.0; P = 0.03), as was a positive test (>13 mm/h) for erythrocyte sedimentation rate (HR = 5.6; 95% CI: 1.5 to 22.2; P = 0.01). Patients with positive results for both tests were at highest risk of clinical events (9.3%) compared with patients with other combinations of test results (1.1% to 2.1%; HR = 7.5; 95% CI: 2.2 to 25.5; P = 0.001). CONCLUSION The combination of C-reactive protein and erythrocyte sedimentation rate had prognostic value in patients with troponin T-negative chest pain and a normal or nondiagnostic electrocardiogram in whom unstable coronary artery disease was ruled out.
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Affiliation(s)
- Radha Bholasingh
- Department of Cardiology, Academic Medical Center, Amsterdam, The Netherlands
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Meuwissen M, de Winter RJ, Chamuleau SAJ, Heijne M, Koch KT, van den Berg A, van Straalen JP, Bax M, Schorborgh CE, Kearney D, Sanders GT, Tijssen JGP, Piek JJ. Value of C-reactive protein in patients with stable angina pectoris, coronary narrowing (30% to 70%), and normal fractional flow reserve. Am J Cardiol 2003; 92:702-5. [PMID: 12972111 DOI: 10.1016/s0002-9149(03)00830-0] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
This study is the first that combines a serum marker of inflammation (C-reactive protein) and intracoronary-derived fractional flow reserve. A low C-reactive protein level was strongly associated with uncomplicated follow-up in patients with hemodynamic nonsignificant coronary lesions. These results show that C-reactive protein provides additional information relevant for clinical decision-making in patients with intermediate (30% to 70%) coronary lesions.
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Affiliation(s)
- Martijn Meuwissen
- Department of Cardiology and Clinical Chemistry, Academic Medical Center, University of Amsterdam, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands.
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de Winter RJ, Koch KT, van Straalen JP, Heyde G, Bax M, Schotborgh CE, Mulder KJ, Sanders GT, Fischer J, Tijssen JGP, Piek JJ. C-reactive protein and coronary events following percutaneous coronary angioplasty. Am J Med 2003; 115:85-90. [PMID: 12893392 DOI: 10.1016/s0002-9343(03)00238-9] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.8] [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: 10/27/2022]
Abstract
PURPOSE We investigated the associations between baseline C-reactive protein levels in patients undergoing percutaneous coronary angioplasty and death, nonfatal myocardial infarction, and repeat revascularization during 14 months of follow-up. METHODS In a single-center, prospective, cohort study, plasma levels of C-reactive protein were measured in 1458 consecutive patients undergoing elective or urgent coronary angioplasty. Patients were followed at 12 to 14 months for the occurrence of death, nonfatal myocardial infarction, and repeat revascularization. RESULTS The incidence of death or myocardial infarction was 6.1% (44/716) in patients with an increased C-reactive protein level (>3 mg/L) and 1.5% (11/742) in patients with a normal level (relative risk [RR] = 4.4; 95% confidence interval [CI]: 2.2 to 8.5; P <0.0001). In a multivariate logistic regression model, an increased C-reactive protein level was an independent predictor of death or nonfatal myocardial infarction (RR = 3.6; 95% CI: 1.8 to 7.2; P =0.0001). The incidence of repeat revascularization was similar in patients with or without an increased C-reactive protein level (23% [168/716] vs. 22% [163/742], P = 0.54). Statin therapy at the time of the procedure was associated with a lower mean (+/- SD) C-reactive protein level (5.8 +/- 9.7 mg/L vs. 7.2 +/- 12.1 mg/L, P =0.02), but was not associated with the risk of death, nonfatal myocardial infarction, and repeat revascularization during follow-up. CONCLUSION An increased C-reactive protein level is an independent prognostic indicator for the occurrence of death or nonfatal myocardial infarction following coronary angioplasty, but is not associated with the need for repeat revascularization.
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Affiliation(s)
- Robbert J de Winter
- Department of Cardiology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands.
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Bholasingh R, Cornel JH, Kamp O, van Straalen JP, Sanders GT, Tijssen JGP, Umans VAWM, Visser CA, de Winter RJ. Prognostic value of predischarge dobutamine stress echocardiography in chest pain patients with a negative cardiac troponin T. J Am Coll Cardiol 2003; 41:596-602. [PMID: 12598071 DOI: 10.1016/s0735-1097(02)02897-8] [Citation(s) in RCA: 82] [Impact Index Per Article: 3.9] [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: 11/18/2022]
Abstract
OBJECTIVES We prospectively studied the prognostic value of predischarge dobutamine stress echocardiography (DSE) in low-risk chest pain patients with a normal or nondiagnostic electrocardiogram (ECG) and a negative serial troponin T. BACKGROUND Noninvasive stress testing is recommended before discharge or within 72 h in patients with low-risk chest pain. The prognostic value of immediate DSE has not been studied in a blinded, prospective fashion. METHODS Patients presenting at the emergency room within 6 h of symptom onset and a normal or nondiagnostic ECG were eligible. Dobutamine stress echocardiography was performed after unstable coronary artery disease was ruled out by a standard rule-out protocol and a negative serial troponin T; the occurrence of any new wall motion abnormality was considered positive. Results were kept blinded. End points were cardiac death, myocardial infarction, rehospitalization for unstable angina or revascularization. RESULTS In total, 377 patients were included. There were 2 deaths, 2 myocardial infarctions, 8 rehospitalization for unstable angina, and 10 revascularizations at six-month follow-up. The end points occurred in 8/26 (30.8%) patients with a positive versus 14/351 (4.0%) patients with a negative DSE (odds ratio, 10.7; 95% confidence interval, 4.0 to 28.8; p < 0.0001). By multivariate analysis, DSE remained a predictor of end points (p < 0.0001). CONCLUSIONS A predischarge DSE had important, independent prognostic value in low-risk, troponin negative, chest pain patients.
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Affiliation(s)
- Radha Bholasingh
- Department of Cardiology, Academic Medical Center, Meibergdreef 9, 1105 AZ Amsterdam, the Netherlands
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Bholasingh R, Cornel JH, Kamp O, van Straalen JP, Sanders GT, Tijssen JG, Umans VA, Visser CA, de Winter RJ. Effective predischarge triage at the emergency room with dobutamine stress echocardiography and cardiac troponin T. J Am Coll Cardiol 2002. [DOI: 10.1016/s0735-1097(02)81574-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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de Winter RJ, Fischer J, Bholasingh R, van Straalen JP, de Jong T, Tijssen JGP, Sanders GT. C-Reactive Protein and Cardiac Troponin T in Risk Stratification: Differences in Optimal Timing of Tests Early after the Onset of Chest Pain. Clin Chem 2000. [DOI: 10.1093/clinchem/46.10.1597] [Citation(s) in RCA: 25] [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: 11/13/2022]
Abstract
Abstract
Background: Increased C-reactive protein (CRP) is an important prognostic indicator for early risk stratification in patients with an acute coronary syndrome (ACS), independent of, and in combination with, increased cardiac troponin T (cTnT). However, increases in both cTnT and CRP also occur secondary to myocardial damage.
Methods and Results: In 156 consecutive patients, early release kinetics of CRP and cTnT were analyzed. The cutoff values were 3.0 mg/L for CRP and 0.1 μg/L for cTnT. In the 75 patients with a CRP below the cutoff on admission, there was little change in CRP until 8 h after the onset of symptoms. At 12 h after the onset of symptoms, the cumulative proportions of abnormal CRP and cTnT in non-ST elevation ACS patients were 27% and 89%, respectively (P <0.01). During the first 24 h after the onset of symptoms, the median time above the cutoff was 20 h for CRP and 5 h for cTnT (P <0.0001). CRP was below the cutoff on admission significantly more often among patients receiving thrombolytic therapy than in patients without an indication for reperfusion therapy (51% vs 28%; P = 0.004).
Conclusions: Increased CRP as an early independent risk indicator should be measured as soon as possible after the onset of symptoms, whereas increased cTnT is most reliable at 12 or more hours after the onset of symptoms.
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Affiliation(s)
| | | | | | | | | | - Jan G P Tijssen
- Clinical Epidemiology and Biostatistics, Academic Medical Center, University of Amsterdam, 1100 DD Amsterdam, The Netherlands
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de Winter RJ, Koster RW, van Straalen JP, Gorgels JPMC, Hoek FJ, Sanders GT. Critical difference between serial measurements of CK-MB mass to detect myocardial damage. Clin Chem 1997. [DOI: 10.1093/clinchem/43.2.338] [Citation(s) in RCA: 18] [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] [Indexed: 11/13/2022]
Abstract
Abstract
To assess the critical difference in serial measurements of CK-MBmass and the ability of this critical difference to detect myocardial damage, we studied 110 patients in whom an acute myocardial infarction (AMI) had been ruled out. Blood samples were drawn at 3, 4, 5, 6, 7, 8, 12, 16, 20, and 24 h after onset of symptoms. With a critical difference of 72.6%, an increase of >2.0 μg/L between two CK-MBmass measurements was determined to be significant. Twenty-three of the non-AMI patients had an increase in CK-MBmass >2.0 μg/L, but five of these did not have an abnormal concentration of troponin T (i.e., not >0.1 μg/L). Also among the 110 non-AMI patients, 22 did have an abnormal troponin T value, 18 of whom (82%) also had CK-MBmassincreased by >2.0 μg/L. In 20 of the 23 patients with an increase in CK-MBmass >2.0 μg/L, this increase was detected from the values for two samples collected at 5 and 12 h after onset of symptoms. In conclusion, using the critical difference for CK-MBmassdefined as an increase >2.0 μg/L detected myocardial damage in patients without AMI.
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Affiliation(s)
- Robbert J de Winter
- Academic Medical Center, Departments of Cardiology, University of Amsterdam, The Netherlands
| | - Rudolph W Koster
- Academic Medical Center, Departments of Cardiology, University of Amsterdam, The Netherlands
| | - Jan P van Straalen
- Academic Medical Center, Departments of Clinical Chemistry, University of Amsterdam, The Netherlands
| | - Jozef P M C Gorgels
- Academic Medical Center, Departments of Clinical Chemistry, University of Amsterdam, The Netherlands
| | - Frans J Hoek
- Academic Medical Center, Departments of Clinical Chemistry, University of Amsterdam, The Netherlands
| | - Gerard T Sanders
- Academic Medical Center, Departments of Clinical Chemistry, University of Amsterdam, The Netherlands
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