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Biomarkers in acs

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https://www.readbyqxmd.com/read/28073900/the-longer-the-better-an-empirical-study-of-the-extent-and-mechanisms-of-attenuating-biomarker-associations-in-cardiovascular-patient-cohorts
#1
Lutz P Breitling, Ute Mons, Harry Hahmann, Wolfgang Koenig, Dietrich Rothenbacher, Hermann Brenner
BACKGROUND: Identifying novel risk markers in cardiovascular patients remains a research priority. Longer follow-up generally is considered favorable in such studies, but associations of interest may become attenuated with increasing follow-up. This issue has not been adequately addressed in the context of patient cohorts. The current study analyzed the extent and mechanisms of attenuating associations in a cardiovascular patient cohort. METHODS: The associations of numerous biomarkers with all-cause mortality were estimated by multiple Cox regression in the Langzeiterfolge der KARdiOLogischen Anschlussheilbehandlung (KAROLA) prospective cohort study of 1204 patients who had participated in an inpatient rehabilitation program after an acute coronary syndrome (ACS) or coronary bypass operation...
January 10, 2017: Clinical Chemistry
https://www.readbyqxmd.com/read/28071752/platelet-to-lymphocyte-ratio-in-the-prediction-of-adverse-outcomes-after-acute-coronary-syndrome-a-meta-analysis
#2
Wenzhang Li, Qianqian Liu, Yin Tang
Recent studies have shown platelet to lymphocyte ratio (PLR) to be a potential inflammatory marker in cardiovascular diseases. We performed a meta-analysis to systematically evaluate the prognostic role of PLR in acute coronary syndrome (ACS). A comprehensive literature search up to May 18, 2016 was conducted from PUBMED, EMBASE and Web of science to identify related studies. The risk ratio (RR) with 95% confidence interval (CI) was extracted or calculated for effect estimates. Totally ten studies involving 8932 patients diagnosed with ACS were included in our research...
January 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28062631/rule-in-and-rule-out-of-myocardial-infarction-using-cardiac-troponin-and-glycemic-biomarkers-in-patients-with-symptoms-suggestive-of-acute-coronary-syndrome
#3
Colleen Shortt, Jinhui Ma, Natasha Clayton, Jonathan Sherbino, Richard Whitlock, Guillaume Pare, Stephen A Hill, Matthew McQueen, Shamir R Mehta, P J Devereaux, Andrew Worster, Peter A Kavsak
BACKGROUND: Early rule-in/rule-out of myocardial infarction (MI) in patients presenting to the emergency department (ED) is important for patient care and resource allocation. Given that dysglycemia is a strong risk factor for MI, we sought to explore and compare different combinations of cardiac troponin (cTn) cutoffs with glycemic markers for the early rule-in/rule-out of MI. METHODS: We included ED patients (n = 1137) with symptoms suggestive of acute coronary syndrome (ACS) who had cTnI, high-sensitivity cTnI (hs-cTnI), hs-cTnT, glucose, and hemoglobin A1c (Hb A1c) measurements...
January 2017: Clinical Chemistry
https://www.readbyqxmd.com/read/28062617/growth-differentiation-factor-15-as-a-biomarker-in-cardiovascular-disease
#4
REVIEW
Kai C Wollert, Tibor Kempf, Lars Wallentin
BACKGROUND: Growth differentiation factor 15 (GDF-15) is expressed and secreted in response to inflammation, oxidative stress, hypoxia, telomere erosion, and oncogene activation. Cardiovascular (CV) disease is a major driver of GDF-15 production. GDF-15 has favorable preanalytic characteristics and can be measured in serum and plasma by immunoassay. CONTENT: In community-dwelling individuals higher concentrations of GDF-15 are associated with increased risks of developing CV disease, chronic kidney disease, and cancer, independent of traditional CV risk factors, renal function, and other biomarkers (C-reactive protein, B-type natriuretic peptide, cardiac troponin)...
January 2017: Clinical Chemistry
https://www.readbyqxmd.com/read/28062616/early-rule-out-and-rule-in-strategies-for-myocardial-infarction
#5
REVIEW
Louise A Cullen, Nicholas L Mills, Simon Mahler, Richard Body
BACKGROUND: Patients with chest pain comprise a large proportion of emergency presentations and place a major burden on healthcare resources. Therefore, efforts to safely and rapidly identify those with and without acute myocardial infarction (AMI) are needed. The challenge for clinicians is to accurately identify patients with acute coronary syndromes, while balancing the need to safely and rapidly reassure and discharge those without serious conditions. CONTENT: This review summarizes the evidence to date on optimum accelerated strategies for the rule-in and rule-out of AMI, using strategies focused on optimum use of troponin results...
January 2017: Clinical Chemistry
https://www.readbyqxmd.com/read/28057184/advances-in-cardiac-biomarkers-of-acute-coronary-syndrome
#6
A K Saenger, N Korpi-Steiner
Acute coronary syndrome (ACS) encompasses a pathophysiological spectrum of cardiovascular diseases, all of which have significant morbidity and mortality. ACS was once considered an acute condition; however, new treatment strategies and improvements in biomarker assays have led to ACS being an acute and chronic disease. Cardiac troponin is the preferred biomarker for the diagnosis of myocardial infarction, and there is considerable interest and efforts toward development and implementation of high-sensitivity cardiac troponin (hs-cTn) assays worldwide...
2017: Advances in Clinical Chemistry
https://www.readbyqxmd.com/read/28040277/microparticles-and-their-role-in-coronary-artery-disease
#7
REVIEW
Sudheer Koganti, Despina Eleftheriou, Paul A Brogan, Tushar Kotecha, Ying Hong, Roby D Rakhit
Despite significant advances in prevention, medical and interventional management, coronary artery disease (CAD) remains the leading cause of death worldwide. Although the number of people being diagnosed with CAD has plateaued in the western world, it is projected to increase significantly in the developing world reaching epidemic proportions, particularly in South Asia. To better stratify the risk of developing and suffering a cardiovascular event due to CAD, not only plasma biomarkers relating to disease burden but also disease activity in CAD are needed; this will allow targeting of appropriate management to high-risk patients for acute events...
December 22, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/28039466/elevated-plasma-interleukin-37-playing-an-important-role-in-acute-coronary-syndrome-through-suppression-of-rock-activation
#8
Tengyu Yang, Fang Fang, Yawen Chen, Jing Ma, Zhaowen Xiao, Songfeng Zou, Na Zheng, Dewen Yan, Songyan Liao, Shaoyuan Chen, Hongchen Fang, Chekmen Yu, Jie Liu, Ming Dong
OBJECTIVE: The plasma level of interleukin-37 is elevated in patients with acute coronary syndrome, however, its function during the onset and progress of the disease remains unclear. This study aimed to investigate the clinical significance of IL-37 in acute coronary syndrome and its underlying mechanism. METHODS: 124 patients with acute coronary syndrome and 40 healthy controls were recruited in this study. Plasma interleukin-37 levels were measured in 41 patients with ST elevation myocardial infarction (STEMI), 41 patients with non-STEMI, 42 patients with unstable angina, and 40 controls...
December 25, 2016: Oncotarget
https://www.readbyqxmd.com/read/28038785/reduced-thrombin-activatable-fibrinolysis-inhibitor-and-enhanced-proinflammatory-cytokines-in-acute-coronary-syndrome
#9
H Pang, C Zhang, F Liu, X Gong, X Jin, C Su
OBJECTIVE: A study was made of the changes in the serum levels of thrombin activatable fibrinolysis inhibitor (TAFI), proinflammatory cytokines and acute phase proteins in the acute stage of acute coronary syndrome (ACS), in order to explore the possibility of using TAFI as a biomarker for ACS risk assessment. METHODS: A total of 211 patients with ACS were enrolled, and healthy subjects were used as controls. Blood samples were taken within 24h after admission. Serum TAFI levels were determined by immunoturbidimetry...
December 27, 2016: Medicina Intensiva
https://www.readbyqxmd.com/read/28029055/improved-risk-stratification-of-patients-with-acute-coronary-syndromes-using-a-combination-of-hstnt-nt-probnp-and-hscrp-with-the-grace-score
#10
Roland Klingenberg, Soheila Aghlmandi, Lorenz Räber, Baris Gencer, David Nanchen, Dik Heg, Sebastian Carballo, Nicolas Rodondi, François Mach, Stephan Windecker, Peter Jüni, Arnold von Eckardstein, Christian M Matter, Thomas F Lüscher
BACKGROUND: Clinical scores and biomarkers improve risk stratification of patients with acute coronary syndromes. However, little is known about their value in patients referred for coronary angiography. METHODS: Consecutive patients admitted at four Swiss university hospitals with a diagnosis of acute coronary syndrome were enrolled into the SPUM-ACS Biomarker Cohort between 2009 and 2012. Patients were followed at 30 days and 1 year with assessment of adjudicated events including all-cause mortality and the composite of all-cause mortality or non-fatal recurrent myocardial infarction...
December 1, 2016: European Heart Journal. Acute Cardiovascular Care
https://www.readbyqxmd.com/read/28029000/comparison-between-soluble-st2-and-high-sensitivity-troponin-i-in-predicting-short-term-mortality-for-patients-presenting-to-the-emergency-department-with-chest-pain
#11
Rossella Marino, Laura Magrini, Francesca Orsini, Veronica Russo, Patrizia Cardelli, Gerardo Salerno, Mina Hur, Salvatore Di Somma
BACKGROUND: High-sensitivity cardiac troponin I (hs-cTnI) and the soluble isoform of suppression of tumorigenicity 2 (sST2) are useful prognostic biomarkers in acute coronary syndrome (ACS). The aim of this study was to test the short term prognostic value of sST2 compared with hs-cTnI in patients with chest pain. METHODS: Assays for hs-cTnI and sST2 were performed in 157 patients admitted to the Emergency Department (ED) for chest pain at arrival. In-hospital and 30-day follow-up mortalities were assessed...
March 2017: Annals of Laboratory Medicine
https://www.readbyqxmd.com/read/28026995/scale-up-production-and-characterization-of-anti-human-cardiac-troponin-i-monoclonal-antibody-in-ascitic-fluid-of-balb-c-mice
#12
Asiabanha Rezaee Majid, Rasaee Mohammad Javad, Paknejad Malihe, Mohammadnejad Javad
The Human Cardiac Troponin I (hcTnI) is a 210 amino acid protein, 23 kDa in molecular weight. This biomarker is commonly used to diagnose myocardial infarction, micro injury, and acute coronary syndrome (ACS) in patients referring to emergency departments. The American Heart Association (AHA) and European Society of Cardiology (ESC) proposed troponin I as the gold biomarker for early detection of heart attack, especially in myocardial infarction (MI). Therefore, developing monoclonal antibodies against this biomarker could help in for early detection of heart attack...
December 27, 2016: Journal of Immunoassay & Immunochemistry
https://www.readbyqxmd.com/read/28013562/deciphering-acute-coronary-syndrome-biomarkers-high-resolution-proteomics-in-platelets-thrombi-and-microparticles
#13
Diana Navas-Carrillo, Francisco Marín, Mariano Valdés, Esteban Orenes-Piñero
Acute coronary syndromes (ACS) encompass unstable angina, non-ST segment elevation myocardial infarction, ST-segment elevation myocardial infarction and sudden cardiac death. They are commonly associated with the presence of vulnerable plaques in the coronary arteries and occur when a thrombus formed from a ruptured atheromatous plaque causes a prolonged occlusion of a coronary artery. The erosion of the vulnerable plaques results in the formation of luminal thrombi secondary to platelet activation and the release of thrombogenic elements within the atherosclerotic lesions...
December 26, 2016: Critical Reviews in Clinical Laboratory Sciences
https://www.readbyqxmd.com/read/28011810/cohort-profile-of-biomarcs-the-biomarker-study-to-identify-the-acute-risk-of-a-coronary-syndrome-a-prospective-multicentre-biomarker-study-conducted-in-the-netherlands
#14
Rohit M Oemrawsingh, K Martijn Akkerhuis, Victor A Umans, Bas Kietselaer, Carl Schotborgh, Eelko Ronner, Timo Lenderink, Anho Liem, David Haitsma, Pim van der Harst, Folkert W Asselbergs, Arthur Maas, Anton J Oude Ophuis, Ben Ilmer, Rene Dijkgraaf, Robbert-Jan de Winter, S Hong Kie The, Alexander J Wardeh, Walter Hermans, Etienne Cramer, Ron H van Schaik, Imo E Hoefer, Pieter A Doevendans, Maarten L Simoons, Eric Boersma
PURPOSE: Progression of stable coronary artery disease (CAD) towards acute coronary syndrome (ACS) is a dynamic and heterogeneous process with many intertwined constituents, in which a plaque destabilising sequence could lead to ACS within short time frames. Current CAD risk assessment models, however, are not designed to identify increased vulnerability for the occurrence of coronary events within a precise, short time frame at the individual patient level. The BIOMarker study to identify the Acute risk of a Coronary Syndrome (BIOMArCS) was designed to evaluate whether repeated measurements of multiple biomarkers can predict such 'vulnerable periods'...
December 23, 2016: BMJ Open
https://www.readbyqxmd.com/read/27992371/relation-between-baseline-plaque-features-and-subsequent-coronary-artery-remodeling-determined-by-optical-coherence-tomography-and-intravascular-ultrasound
#15
Zulong Xie, Nana Dong, Rong Sun, Xinxin Liu, Xia Gu, Yong Sun, Hongwei Du, Jiannan Dai, Youbin Liu, Jingbo Hou, Jinwei Tian, Bo Yu
Atherosclerosis often leads to myocardial infarction and stroke. We examined the influence of baseline plaque characteristics on subsequent vascular remodeling in response to changes in plaque size. Using optical coherence tomography (OCT) and intravascular ultrasound (IVUS), we examined 213 plaques from 138 patients with acute coronary syndrome at baseline and repeated IVUS at the 12-month follow-up. The change in external elastic membrane (EEM) area for each 1 mm2 change in plaque area (i.e., the slope of the regression line) was calculated as a measure of vascular remodeling capacity...
December 15, 2016: Oncotarget
https://www.readbyqxmd.com/read/27987039/salivary-oxidative-stress-biomarkers-in-chronic-periodontitis-and-acute-coronary-syndrome
#16
Thuy T Nguyen, Lan Q Ngo, Ananya Promsudthi, Rudee Surarit
OBJECTIVES: The study aimed at assessing oxidative stress (OS) biomarker levels in the saliva of patients with chronic periodontitis (CP) and acute coronary syndrome (ACS) and establishing their correlation to periodontal parameters and markers for cardiovascular events. MATERIALS AND METHODS: The present study enrolled 24 patients with ACS and CP (the ACSCP group), 24 patients with ACS only (the ACS group), 24 patients with CP only (the CP group), and 24 healthy controls...
December 16, 2016: Clinical Oral Investigations
https://www.readbyqxmd.com/read/27981367/-cardiac-causes-of-chest-pain
#17
C Wächter, B Markus, B Schieffer
Because of the life-threatening character and a high prevalence in emergency rooms, cardiac causes are important differential diagnoses of acute chest pain with the need for rapid clarification. In this context the working diagnosis "acute coronary syndrome" (ACS) plays a major role. In a synopsis of the clinical presentation, medical history, electrocardiogram and analysis of cardiac biomarkers, ST-segment elevation myocardial infarction (STEMI), non-ST-segment elevation myocardial infarction (NSTEMI) and unstable angina pectoris can be specified as entities of ACS...
December 15, 2016: Der Internist
https://www.readbyqxmd.com/read/27974383/high-sensitivity-troponin-t-vs-i-in-acute-coronary-syndrome-prediction-of-significant-coronary-lesions-and-long-term-prognosis
#18
Brede Kvisvik, Lars Mørkrid, Helge Røsjø, Milada Cvancarova, Alexander D Rowe, Christian Eek, Bjørn Bendz, Thor Edvardsen, Jørgen Gravning
BACKGROUND: High-sensitivity cardiac troponin (hs-cTn) T and I assays are established as crucial tools for the diagnosis of acute myocardial infarction (AMI), as they have been found superior to old troponin assays. However, eventual differences between the assays in prediction of significant coronary lesions and long-term prognosis in patients with acute coronary syndrome (ACS) have not been fully unraveled. METHODS: Serum concentrations of hs-cTnT (Roche), hs-cTnI (Abbott), and amino-terminal pro-B-type natriuretic peptide (NT-proBNP; Roche) in 390 non-ST-elevation (NSTE) ACS patients were evaluated in relation to significant coronary lesions on coronary angiography (defined as a stenosis >50% of the luminal diameter, with need for revascularization) and prognostic accuracy for cardiovascular mortality, all-cause mortality, as well as the composite end point of cardiovascular mortality and hospitalizations for AMI or heart failure...
December 14, 2016: Clinical Chemistry
https://www.readbyqxmd.com/read/27956440/acute-coronary-syndromes
#19
Tushar Kotecha, Roby D Rakhit
In the UK, there are over 80,000 admissions annually with acute coronary syndromes (ACS). Management of ST-elevation myocardial infarction (STEMI) involves primary percutaneous coronary intervention (PCI), which is delivered via dedicated heart attack centres. Non-ST elevation-ACS (NSTE-ACS) accounts for two-thirds of ACS presentations, affecting an older cohort of patients - often with more complex comorbidities. Initial management is with anti-thrombotic therapy with a view to PCI within 24 hours for the most acute cases and within 72 hours for all others...
December 2016: Clinical Medicine: Journal of the Royal College of Physicians of London
https://www.readbyqxmd.com/read/27932413/biomarkers-and-coronary-lesions-predict-outcomes-after-revascularization-in-non-st-elevation-acute-coronary-syndrome
#20
Daniel Lindholm, Stefan K James, Maria Bertilsson, Richard C Becker, Christopher P Cannon, Evangelos Giannitsis, Robert A Harrington, Anders Himmelmann, Frederic Kontny, Agneta Siegbahn, Philippe Gabriel Steg, Robert F Storey, Matthijs A Velders, W Douglas Weaver, Lars Wallentin
BACKGROUND: Risk stratification in non-ST-elevation acute coronary syndrome (NSTE-ACS) is currently mainly based on clinical characteristics. With routine invasive management, angiography findings and biomarkers are available and may improve prognostication. We aimed to assess if adding biomarkers [high-sensitivity cardiac troponin T (cTnT-hs), N-terminal probrain-type natriuretic peptide (NT-proBNP), growth differentiation factor 15 (GDF-15)] and extent of coronary artery disease (CAD) might improve prognostication in revascularized patients with NSTE-ACS...
December 8, 2016: Clinical Chemistry
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