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high sensitive troponin

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https://www.readbyqxmd.com/read/28107745/femtomolar-detection-of-cardiac-troponin-i-using-a-novel-label-free-and-reagent-free-dendrimer-enhanced-impedimetric-immunosensor
#1
Rashida Akter, Bongjin Jeong, Yong-Mi Lee, Jong-Soon Choi, Md Aminur Rahman
A novel highly sensitive dendrimer coupled impedimetric immunosensor was developed for the label-free and reagent-free detection of cardiac troponin I (TnI) in serum samples. The immunosensor probe was fabricated by covalently attaching carboxylic acid-functionalized third generation (G3) poly (amidoamine) (PAMAM) dendrimer (Den) on the 3, 3', 5, 5'-tetramethyl benzidine (TMB) modified 6-mercaptohexanoic acid (MHA) self-assembled monolayer (SAM) on a gold (Au) electrode. Monoclonal anti-TnI antibody was then covalently immobilized on the Den and TMB attached MHA SAM modified surface...
January 12, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/28105138/clinical-and-angiographic-correlation-of-high-sensitivity-c-reactive-protein-with-acute-st-elevation-myocardial-infarction
#2
Syed Tanveer, Shaheena Banu, Nasimudeen Rehumathbeevi Jabir, Mohd Shahnawaz Khan, Ghulam Md Ashraf, Nanjappa Cholenahally Manjunath, Shams Tabrez
Vascular inflammation and associated ongoing inflammatory responses are considered as the critical culprits in the pathogenesis of acute atherothrombotic events such as acute coronary syndrome (ACS) and myocardial infarction (MI). ST segment elevation myocardial infarction (STEMI) is considered as one of the prominent clinical forms of ACS. Moreover, C-reactive protein (CRP) is an important acute phase prsotein, which may be estimated using high-sensitivity methods (hs-CRP), and its elevated level in body fluids reflects chronic inflammatory status...
December 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28097992/blood-test-could-predict-risk-of-heart-attack-and-subsequent-death
#3
(no author information available yet)
A high-sensitivity blood test, known as a troponin test, could predict the risk of heart attack and death and patients' response to statins, say researchers from the Universities of Edinburgh and Glasgow.
January 18, 2017: Nursing Standard
https://www.readbyqxmd.com/read/28094131/prognostic-significance-of-serial-high-sensitivity-troponin-i-measurements-following-acute-cardiac-decompensation-correlation-with-longer-term-clinical-outcomes-and-reverse-remodelling
#4
Julia Wallenborn, Almuth Marx, Stefan Störk, Gülmisal Güder, Susanne Brenner, Georg Ertl, Christiane E Angermann
BACKGROUND: This study investigated the correlation of levels of and changes in serial high-sensitivity cardiac troponin I (hsTnI) with subsequent clinical event rates and changes in cardiac morphology and function in patients hospitalized for acutely decompensated heart failure (ADHF). METHODS AND RESULTS: HsTnI levels were determined in 875 ADHF patients before discharge from hospital (baseline cohort) and clinical outcomes assessed after 180days. HsTnI was re-measured at 180days in 456/875 patients (follow-up cohort)...
January 5, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28093987/the-prognostic-value-of-heart-type-fatty-acid-binding-protein-in-patients-with-suspected-acute-coronary-syndrome-a-systematic-review
#5
Julia D Jones, Pei Gee Chew, Rebecca Dobson, Andrew Wootton, Reza Ashrafi, Aleem Khand
BACKGROUND: Heart type fatty acid protein(HFABP) is a cytosolic protein released early after acute coronary syndrome(ACS) even in the absence of myocardial necrosis. OBJECTIVES: The purpose of this systematic review was to determine whether HFABP levels in patients with suspected, or confirmed ACS, improves risk stratification when added to established means of risk assessment. METHODS: We searched Medline, Pubmed and Embase databases from inception to July 2015 to identify prospective studies with suspected or confirmed ACS, who had HFABP measured during the index admission with at least 1 month follow up data...
January 16, 2017: Current Cardiology Reviews
https://www.readbyqxmd.com/read/28089424/high-sensitivity-troponins-and-prognosis-of-heart-failure
#6
EDITORIAL
M Anguita
No abstract text is available yet for this article.
January 12, 2017: Revista Clínica Española
https://www.readbyqxmd.com/read/28087371/use-of-the-heart-pathway-with-high-sensitivity-cardiac-troponins-a-secondary-analysis
#7
Simon A Mahler, Jason P Stopyra, Fred S Apple, Robert F Riley, Gregory B Russell, Brian C Hiestand, James W Hoekstra, Cedric W Lefebvre, Bret A Nicks, David M Cline, Kim L Askew, David M Herrington, Gregory L Burke, Chadwick D Miller
OBJECTIVES: The HEART Pathway combines a decision aid and serial contemporary cardiac troponin I (cTnI) measures to achieve >99% sensitivity for major adverse cardiac events (MACE) at 30days and early discharge rates >20%. However, the impact of integrating high-sensitivity troponin (hs-cTn) measures into the HEART Pathway has yet to be determined. In this analysis we compare test characteristics of the HEART Pathway using hs-cTnI, hs-cTnT, or cTnI. DESIGN & METHODS: A secondary analysis of participants enrolled in the HEART Pathway RCT was conducted...
January 10, 2017: Clinical Biochemistry
https://www.readbyqxmd.com/read/28087181/challenging-the-99th-percentile-a-lower-troponin-cutoff-leads-to-low-mortality-of-chest-pain-patients
#8
Nils Arne Sörensen, Johannes Tobias Neumann, Francisco Ojeda, Tjark Schwemer, Thomas Renné, Renate B Schnabel, Tanja Zeller, Mahir Karakas, Stefan Blankenberg, Dirk Westermann
BACKGROUND: Rule-out of non-ST-elevation myocardial infarction is based on consecutive measurements of cardiac troponins using the 99th percentile of the respective assay as cutoff. The new ESC guidelines alternatively offer rapid 1h algorithms with lower cutoffs than the 99th percentile for rule-out of non-ST-elevation myocardial infarction. We aimed to compare a recently introduced 1h algorithm based on a high-sensitivity cardiac troponin I (hs-TnI) cutoff of 6ng/L at 0h and 1h to the current standard of care using the 99th percentile (27ng/L) as cutoff with reference to follow-up events in a large chest pain cohort...
December 27, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/28087154/evaluation-of-serial-high-sensitivity-troponin-t-levels-in-individuals-without-overt-coronary-heart-disease-following-exercise-stress-testing
#9
Yousef M E Saad, Hanan Idris, Ibrahim M Shugman, Krishna K Kadappu, Rohan Rajaratnam, Liza Thomas, Christian Mussap, Dominic Y C Leung, Craig P Juergens, John K French
BACKGROUND: Detectable levels of high sensitivity (cardiac) troponin T (HsTnT), occur in the majority of patients with stable coronary heart disease (CHD), and often in 'healthy' individuals. Extreme physical activity may lead to marked elevations in creatine kinase MB and TnT levels. However, whether HsTnT elevations occur commonly after exercise stress testing (EST), and if so, whether this has clinical significance, needs clarification. METHODS: To determine whether HsTnT levels become elevated after EST (Bruce protocol) to ≥95% of predicted maximum heart rate in presumed healthy subjects without overt CHD, we assayed HsTnT levels for ∼5h post-EST in 105 subjects (median age 37 years)...
December 9, 2016: Heart, Lung & Circulation
https://www.readbyqxmd.com/read/28070882/effect-of-a-180-mg-ticagrelor-loading-dose-on-myocardial-necrosis-in-patients-undergoing-elective-percutaneous-coronary-intervention-a-preliminary-study
#10
QuanFu Xu, YingGang Sun, Yi Zhang, Bo Liu, Lu Fang, ChengXing Shen, YiGang Li, Shu Meng
BACKGROUND: To examine whether a loading dose of ticagrelor on top of clopidogrel reduced post-percutaneous coronary intervention (PCI) myonecrosis. METHODS: Seventy seven coronary artery disease patients received a loading dose of 300 mg clopidogrel pre-PCI and were divided into three groups: group TT (n = 36): a loading dose of 180 mg ticagrelor pre-PCI, followed by ticagrelor 90 mg twice daily commencing one day post-PCI; group CT (n = 26): a maintenance dose of ticagrelor 90 mg twice daily; group CC (n = 15): clopidogrel 75 mg daily post-PCI...
January 10, 2017: Cardiology Journal
https://www.readbyqxmd.com/read/28069837/high-sensitive-cardiac-troponin-t-as-a-novel-predictor-for-recurrence-of-atrial-fibrillation-after-radiofrequency-catheter-ablation
#11
Koki Nakanishi, Shota Fukuda, Hajime Yamashita, Toshifumi Hasegawa, Michihiko Kosaka, Naoya Shirai, Kenei Shimada, Junichi Yoshikawa, Atsushi Tanaka
AIMS: We aimed to determine whether elevated serum high-sensitive cardiac troponin T (hs-TnT) levels predict atrial fibrillation (AF) recurrence after pulmonary vein isolation (PVI). METHODS AND RESULTS: We included 125 consecutive patients with AF (paroxysmal, n = 79; persistent, n = 46) who underwent first-time PVI. Serum hs-TnT, high-sensitive C-reactive protein (hs-CRP), atrial natriuretic peptide, and plasma B-type natriuretic peptide levels were measured in venous samples collected before PVI...
January 8, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28069251/elevated-troponin-i-level-assessed-by-a-new-high-sensitive-assay-and-the-risk-of-poor-outcomes-in-patients-with-acute-heart-failure
#12
R Zymliński, M Sokolski, P Siwolowski, J Biegus, S Nawrocka, E A Jankowska, J Todd, R Yerramilli, J Estis, W Banasiak, P Ponikowski
BACKGROUND: The interpretation and clinical usefulness of elevated levels of cardiac troponins in acute heart failure (AHF) remain controversial. We aimed to characterize the relationship between changes in cardiac troponin I (measured using a new high-sensitive immunoassay by single-molecule counting technology, Singulex, Alameda, USA; hs-TnI) during first 48h of hospital stay and patients' characteristics and the outcomes. METHODS AND RESULTS: We measured hs-TnI at baseline, after 24 and 48h in 130 AHF patients (mean age: 65±13years, 77% men)...
January 5, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28064233/clozapine-associated-with-autoimmune-reaction-fever-and-low-level-cardiotoxicity-a-case-report
#13
Charilaos Gerasimou, Georgia Phaedra Vitali, George D Vavougios, Charalabos Papageorgiou, Athanasios Douzenis, Styliani I Kokoris, Ioannis Liappas, Emmanouil Rizos
BACKGROUND: Clozapine is a second-generation antipsychotic drug used in treatment-resistant schizophrenia. Fever induced by clozapine is a rather frequent side-effect which usually occurs in the first 4 weeks of treatment. Despite its effectiveness, there are potentially life-threatening adverse effects, such as cardiotoxicity. CASE REPORT: We present the case of a 31-year-old caucasian male with refractory schizophrenia who developed benign fever, increase of C-reactive protein and high troponin levels, without presenting any other signs to myocarditis, on the 13th day under clozapine treatment, which declined progressively upon discontinuation of the drug...
January 2017: In Vivo
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
#14
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/28062627/association-of-repeatedly-measured-high-sensitivity-assayed-troponin-i-with-cardiovascular-disease-events-in-a-general-population-from-the-morgam-biomarcare-study
#15
Maria F Hughes, Francisco Ojeda, Olli Saarela, Torben Jørgensen, Tanja Zeller, Tarja Palosaari, Mark G O'Doherty, Anders Borglykke, Kari Kuulasmaa, Stefan Blankenberg, Frank Kee
BACKGROUND: High-sensitivity troponin I (hs-cTnI) concentrations reflect myocardial stress. The role of hs-cTnI in predicting long-term changes in the risk of cardiovascular disease (CVD) in general populations is not clearly defined. METHODS: We investigated whether the change in 3 repeated measures of hs-cTnI collected 5 years apart in a prospective Danish study (3875 participants, initially aged 30-60 years, 51% female, disease free at baseline) improves 10-year prediction of incident CVD compared to using a single most recent hs-cTnI measurement...
January 2017: Clinical Chemistry
https://www.readbyqxmd.com/read/28062625/high-sensitivity-troponin-i-in-stable-patients-with-atherosclerotic-disease-in-the-tra-2%C3%A2-p-timi-50-trial
#16
Alon Eisen, Marc P Bonaca, Petr Jarolim, Benjamin M Scirica, Harvey D White, Michal Tendera, Mikael Dellborg, Jose C Nicolau, Joao Morais, Keith A A Fox, Erin A Bohula, Sabina A Murphy, Eugene Braunwald, David A Morrow
BACKGROUND: Cardiac troponin I, measured with a high-sensitivity assay (hs-TnI), is well-established for risk prediction in acute coronary syndromes. However, its prognostic role in stable atherosclerotic disease, particularly for future myocardial infarction (MI), is less well defined. METHODS: We measured hs-TnI (Abbott ARCHITECT) in 15833 patients with prior MI, ischemic stroke, or peripheral arterial disease from the placebo-controlled Thrombin Receptor Antagonist in Secondary Prevention of Atherothrombotic Ischemic Events (TRA 2°P)-Thrombolysis in Myocardial Infarction (TIMI) 50 trial of the platelet inhibitor vorapaxar, excluding patients with recent MI (<30 days)...
January 2017: Clinical Chemistry
https://www.readbyqxmd.com/read/28062620/application-of-cardiac-troponin-in-cardiovascular-diseases-other-than-acute-coronary-syndrome
#17
REVIEW
Kai M Eggers, Bertil Lindahl
BACKGROUND: Increased cardiac troponin concentrations in acute coronary syndrome (ACS) identify patients with ongoing cardiomyocyte necrosis who are at increased risk. However, with the use of more precise assays, cardiac troponin increases are commonly noted in other cardiovascular conditions as well. This has generated interest in the use of cardiac troponin for prognostic assessment and clinical management of these patients. In this review, we have summarized the data from studies investigating the implications of cardiac troponin concentrations in various acute and chronic conditions beyond ACS, i...
January 2017: Clinical Chemistry
https://www.readbyqxmd.com/read/28062618/use-of-biomarkers-in-predicting-the-onset-monitoring-the-progression-and-risk-stratification-for-patients-with-type-2-diabetes-mellitus
#18
REVIEW
Benjamin M Scirica
BACKGROUND: As the worldwide prevalence of type 2 diabetes mellitus (T2DM) increases, it is even more important to develop cost-effective methods to predict and diagnose the onset of diabetes, monitor progression, and risk stratify patients in terms of subsequent cardiovascular and diabetes complications. CONTENT: Nonlaboratory clinical risk scores based on risk factors and anthropomorphic data can help identify patients at greatest risk of developing diabetes, but glycemic indices (hemoglobin A1c, fasting plasma glucose, and oral glucose tolerance tests) are the cornerstones for diagnosis, and the basis for monitoring therapy...
January 2017: Clinical Chemistry
https://www.readbyqxmd.com/read/28062616/early-rule-out-and-rule-in-strategies-for-myocardial-infarction
#19
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/28062614/myocardial-infarction-type-2-and-myocardial-injury
#20
REVIEW
Yader Sandoval, Kristian Thygesen
BACKGROUND: The development and implementation of sensitive and high-sensitivity cardiac troponin assays has not only expedited the early ruling in and ruling out of acute myocardial infarction, but has also contributed to the identification of patients at risk for myocardial injury with necrosis, as confirmed by the presence of cardiac troponin concentrations above the 99th percentile. Myocardial injury with necrosis may occur either in the presence of overt ischemia from myocardial infarction, or in the absence of overt ischemia from myocardial injury accompanying other conditions...
January 2017: Clinical Chemistry
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