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Troponin Sensitive Diagnosis

Noppadol Aroonyadet, Wutthinan Jeamsaksiri, Anurat Wisitsoraat, Adisorn Tuantranont
We report a scalable, uniform, and sensitive top-down fabricated indium oxide (In<sub>2</sub>O<sub>3</sub>) nanoribbon biosensor platform with integrated on-chip gate electrodes using two photolithographic masks. The purpose of this on-chip gate electrode is to control the operational point of the sensor during biomolecular detection replacing the cumbersome external Ag/AgCl electrode. It exhibits excellent capability in gating transistors in an aqueous condition and high stability during the sensing experiment, which is similar to the Ag/AgCl electrode...
July 18, 2018: Nanotechnology
Yi-Heng Li, Yu-Chen Wang, Yi-Chih Wang, Ju-Chi Liu, Cheng-Han Lee, Chun-Chi Chen, I-Chang Hsieh, Feng-You Kuo, Wei-Chun Huang, Shih-Hsien Sung, Chiung-Zuan Chiu, Jung-Cheng Hsu, Shu-Long Jen, Juey-Jen Hwang, Jiunn-Lee Lin
In Taiwan, the incidence of non-ST segment elevation acute coronary syndrome (NSTE-ACS) continues to increase in recent years. The purpose of this guideline is to help health care professionals in Taiwan to use adequate tests and treatments for management of NSTE-ACS. For rapid diagnosis, in addition to history and physical examination, 0/3 h rapid diagnosis protocol with high sensitivity cardiac troponin assay is recommended in this guideline. Dual antiplatelet and anticoagulation therapies are important parts in the initial treatment...
July 12, 2018: Journal of the Formosan Medical Association, Taiwan Yi Zhi
Camille Chenevier-Gobeaux, Louis Deweerdt, Anne-Valérie Cantero, Bertrand Renaud, Bruno Desmaizières, Sandrine Charpentier, Aline Leroy, Emmanuelle Adelaïde, Delphine Collin-Chavagnac, Eric Bonnefoy-Cudraz, Laurence Estepa, Akli Chekroune, Sylvie Basco, Stéphane Andrieu, Stéphane Bourgeois, Marie-Agnès Costa, Christine Vallejo, Tiphaine Robert, Siham Ouahabi, Bruno Baudin, Benedicte Beneteau-Burnat, Anne-Marie Gorce-Dupuy, Patrick Ray, Claire Gast, Monique Dehoux, Guillaume Lefèvre
Objectives: We aimed to compare the use of nine different cardiac troponin (cTn) assays (2 cTnT and 7 cTnI) for the diagnosis of NSTEMI in a single multi-centre population. Design and methods: One hundred and fifty-eight patients were included (mean age 60 years, SD 17 years), including 23 patients (14%) with NSTEMI. Results: The analytical comparison highlighted a large heterogeneity of cTn assays, as reflected by percentages of patients with detectable cTn, correlation coefficients, Passing-Bablok comparisons and concordance coefficients...
July 2018: Practical Laboratory Medicine
Hyungoo Shin, Bo-Hyoung Jang, Tae Ho Lim, Juncheol Lee, Wonhee Kim, Youngsuk Cho, Chiwon Ahn, Kyu-Sun Choi
INTRODUCTION: This study aimed to determine the diagnostic accuracy of adding copeptin to cardiac troponin (cTn) on admission to the emergency department (ED) for non-ST elevation myocardial infarction (NSTEMI) compared to cTn alone. MATERIALS AND METHODS: A literature search of MEDLINE, EMBASE, and the Cochrane Library was performed (search date: April 13, 2018). Primary studies were included if they accurately reported on patients with symptoms suggestive of acute myocardial infarction and measured both cTn alone and cTn with copeptin upon admission to the ED...
2018: PloS One
Thomas Mueller, Margot Egger, Evi Peer, Benjamin Dieplinger
BACKGROUND: In Europe, clinicians use so called high-sensitivity assays for the measurement of cardiac troponin I and T (i.e., hs-cTnI and hs-cTnT assays, also termed 5th generation assays) since several years. We aimed at performing a head-to-head comparison of two 5th generation assays in "real life use". METHODS: We studied 3588 consecutive patients presenting to an emergency department. We used both, a hs-cTnI assay from Abbott and a hs-cTnT assay from Roche in clinical routine...
June 26, 2018: Clinica Chimica Acta; International Journal of Clinical Chemistry
M Negahdary, M Behjati-Ardakani, N Sattarahmady, H Heli
Background: Acute myocardial infarction (MI) accounts for one third of deaths. Cardiac troponin I (TnI) is a reliable biomarker of cardiac muscle tissue injury and is employed in the early diagnosis of MI. Objective: In this study, a molecular method is introduced to early diagnosis of MI by rapid detection of TnI. Materials and Methods: The detection method was based on electrochemical aptasensing, being developed using different methods and evaluation steps...
June 2018: Journal of Biomedical Physics & Engineering
Jasper Boeddinghaus, Raphael Twerenbold, Thomas Nestelberger, Patrick Badertscher, Karin Wildi, Christian Puelacher, Jeanne du Fay de Lavallaz, Elif Keser, Maria Rubini Giménez, Desiree Wussler, Nikola Kozhuharov, Katharina Rentsch, Òscar Miró, F Javier Martin-Sanchez, Beata Morawiec, Sabrina Stefanelli, Nicolas Geigy, Dagmar I Keller, Tobias Reichlin, Christian Mueller
BACKGROUND: Clinical performance of the novel high-sensitivity cardiac troponin I (Siemens-hs-cTnI-Centaur) assay is unknown. We aimed to clinically validate the Siemens-hs-cTnI-Centaur assay and develop 0/1-h and 0/2-h algorithms. METHODS: We enrolled patients presenting to the emergency department with symptoms suggestive of acute myocardial infarction (AMI). Final diagnoses were centrally adjudicated by 2 independent cardiologists including all clinical information twice: first, using serial hs-cTnT (Roche-Elecsys, primary analysis); second, using hs-cTnI (Abbott-Architect, secondary analysis) measurements in addition to the clinically applied (hs)-cTn...
June 25, 2018: Clinical Chemistry
Jie Chen, Ling Kong, Xiaokai Sun, Jinhui Feng, Zhiwei Chen, Dawei Fan, Qin Wei
Rapidity and high sensitivity are the critical factors for the diagnoses of heart attacks and cardiac troponin I (cTnI) is used as a gold standard marker for its diagnosis. To realize the accurate detection of cTnI, a novel ultrasensitive photoelectrochemical (PEC) immunosensor for cTnI determination was developed upon dual inhibition effect of Ag@Cu2 O core-shell submicron-particles(SPs) toward CdS sensitized the (001) facets of anatase titanium dioxide nanosheets (TiO2 /CdS). In this study, the TiO2 /CdS composite not only indicated stable and excellent photoelectric signal but also provided abundant functional group to immobilized cTnI antibodies (Ab1 )...
May 24, 2018: Biosensors & Bioelectronics
M Vafaie, E Giannitsis, H A Katus
Cardiac biomarkers are an integral part of the diagnostic work-up and risk stratification of patients with chest pain. Cardiac troponins are highly sensitive diagnostic biomarkers in patients with acute coronary syndrome and have prognostic value in a multitude of acute and chronic diseases. In patients with suspected pulmonary embolism (PE) D‑dimer can be used together with the Wells score for exclusion of PE. In patients with confirmed PE, B‑type natriuretic peptide (BNP), N‑terminal pro-BNP (NT-proBNP) and heart-type fatty acid binding protein (h-FABP) can be used for risk stratification...
June 21, 2018: Herz
Tim Beausire, Mohamed Faouzi, Cristian Palmiere, Tony Fracasso, Katarzyna Michaud
INTRODUCTION: Ischemic heart disease (IHD) related to atherosclerotic coronary artery disease (CAD) is one of the most prevalent causes of death in Europe. Postmortem evaluation of IHD remains a challenge because of possible non-specific autopsy finding in some autopsy cases, especially in early myocardial ischemia. High-sensitive cardiac troponin T (hs-TnT) is used today in clinical practice as the "gold standard" to diagnose the myocardial ischemia, and might also be applied as an ancillary tool for post-mortem evaluation...
June 4, 2018: Forensic Science International
Marcus Hjort, Bertil Lindahl, Tomasz Baron, Tomas Jernberg, Per Tornvall, Kai M Eggers
BACKGROUND: Myocardial infarction (MI) with non-obstructive coronary arteries (MINOCA) is a recently recognized condition where biomarkers and prognosis are less well studied than in MI with obstructive coronary artery disease (MI-CAD). We therefore aimed to investigate the one-year prognostic value of high-sensitivity cardiac troponin T (hs-cTnT) levels in MINOCA in comparison to MI-CAD. METHODS: In this registry-based cohort study, we used data from patients with a discharge diagnosis of MI, admitted between 2009 and 2013 to Swedish hospitals using the hs-cTnT assay...
June 2018: American Heart Journal
K Wildi, H Singeisen, R Twerenbold, P Badertscher, D Wussler, L J J Klinkenberg, S J R Meex, T Nestelberger, J Boeddinghaus, Ò Miró, F J Martin-Sanchez, B Morawiec, P Muzyk, J Parenica, D I Keller, N Geigy, E Potlukova, Z Sabti, N Kozhuharov, C Puelacher, J du Fay de Lavallaz, M Rubini Gimenez, S Shrestha, G Marzano, K Rentsch, S Osswald, T Reichlin, C Mueller
BACKGROUND: High-sensitivity cardiac troponin T (hs-cTnT) blood concentrations were shown to exhibit a diurnal rhythm, characterized by gradually decreasing concentrations throughout daytime, rising concentrations during nighttime and peak concentrations in the morning. We aimed to investigate whether this also applies to (h)s-cTnI assays and whether it would affect diagnostic accuracy for acute myocardial infarction (AMI). METHODS: Blood concentrations of cTnI were measured at presentation and after 1 h using four different cTnI assays: three commonly used sensitive (s-cTnI Architect, Ultra and Accu) and one experimental high-sensitivity assay (hs-cTnI Accu) in a prospective multicenter diagnostic study of patients presenting to the emergency department with suspected AMI...
June 4, 2018: International Journal of Cardiology
Akiomi Yoshihisa, Takatoyo Kiko, Takamasa Sato, Masayoshi Oikawa, Atsushi Kobayashi, Yasuchika Takeishi
The differential diagnosis of cardiomyopathy is important. It has been recently reported that urinary titin N (U-TN) is increased in patients with muscular dystrophy (MD), and is associated with muscular damage. We aimed to clarify whether U-TN is useful as a diagnostic tool for distinguishing MD from various cardiomyopathies [e.g. dilated cardiomyopathy (DCM), hypertrophic cardiomyopathy (HCM)]. We measured and compared the U-TN/creatinine ratio (U-TN/Cr; pmol/mg/dl) in 278 control subjects and 331 patients with various cardiomyopathies (DCM, n = 199; sarcoidosis, n = 18; HCM, n = 86; amyloidosis, n = 15; Fabry disease, n = 6; MD, n = 7)...
June 2, 2018: Clinica Chimica Acta; International Journal of Clinical Chemistry
Dorien M Kimenai, Emma B N J Janssen, Kai M Eggers, Bertil Lindahl, Hester M den Ruijter, Otto Bekers, Yolande Appelman, Steven J R Meex
BACKGROUND: The overall clinical decision limits of high-sensitivity cardiac troponin I (hs-cTnI; 26 ng/L) and T (hs-cTnT; 14 ng/L) may contribute to underdiagnosis of acute myocardial infarction in women. We performed a systematic review to investigate sex-specific and overall 99th percentiles of hs-cTnI and hs-cTnT derived from healthy reference populations. CONTENT: We searched in PubMed and EMBASE for original studies, and by screening reference lists. Reference populations designed to establish 99th percentiles of hs-cTnI (Abbott) and/or hs-cTnT (Roche), published between January 2009 and October 2017, were included...
July 2018: Clinical Chemistry
Vincent Lordet, Matthieu Lesbordes, Rodrigue Garcia, Nicolas Varroud-Vial, Pierre Ingrand, Luc Christiaens, Sébastien Levesque
INTRODUCTION: Specialized chest pain units (CPU) appear to increase the proportion of patients with acute chest pain who are properly evaluated. The aim of this study was to evaluate the survival and occurrence of cardiovascular events in patients without diagnosis at the end of the management of chest pain with high-sensibility troponin elevation. METHOD: All consecutive patients who came to the cardiac emergency room of Poitiers University Hospital between January 1, 2014 and August 7, 2015 for chest pain and troponin elevation were included...
May 26, 2018: Clinical Cardiology
Xiao-Dong Ye, Yi He, Sheng Wang, Gordon T Wong, Michael G Irwin, Zhengyuan Xia
Acute myocardial infarction (AMI) is a life-threatening event. Even with timely treatment, acute ischemic myocardial injury and ensuing ischemia reperfusion injury (IRI) can still be difficult issues to tackle. Apart from radiological and other auxiliary examinations, laboratory tests of applicable cardiac biomarkers are also necessary for early diagnosis and close monitoring of this disorder. Heart-type fatty acid binding protein (H-FABP), which mainly exists inside cardiomyocytes, has recently emerged as a potentially promising biomarker for myocardial injury...
May 17, 2018: Acta Pharmacologica Sinica
Xiujuan Qiao, Kunxia Li, Jinqiong Xu, Ni Cheng, Qinglin Sheng, Wei Cao, Tianli Yue, Jianbin Zheng
Cardiac troponin I (cTnI) is a specific and sensitive biomarker for the early diagnosis of acute myocardial infarction and for the subsequent clinical treatments. In this work, novel electrochemical sensing platform for sensing of cTnI based on aptamer-MoS2 nanoconjugates was proposed. For comparison, core-shell Au@SiO2 @Au nanoparticles were also used for sensing of cTnI. The sensing schemes and electrochemical responses of the proposed sensors were investigated by electrochemical impedance spectroscopy (EIS) in 5...
August 15, 2018: Biosensors & Bioelectronics
Peter A Kavsak, Craig Ainsworth, Donald M Arnold, Terry Scott, Lorna Clark, Josko Ivica, Katharine Mackett, Richard Whitlock, Andrew Worster
BACKGROUND: Elevated and non-changing high-sensitivity cardiac troponin (hs-cTn) concentrations may suggest a process other than acute injury, possibly due to chronic condition(s) causing the elevation, an analytical error/interference or the formation of macrocomplexes. Heart-type fatty acid binding protein (H-FABP) might be useful in this setting to identify the etiology of abnormally high and non-changing cTn concentrations which could aid clinical decision making in the hospital setting...
May 8, 2018: Clinical Biochemistry
Firmin Kamber, Eckhard Mauermann, Esther Seeberger, Lorenz Guerke, Christian Mueller, Daniel Bolliger, Giovanna A L Lurati Buse
BACKGROUND: Copeptin levels in conjunction with cardiac troponin may be used to rule out early myocardial infarction in patients presenting with chest pain. Raised pre-operative copeptin has been shown to be associated with postoperative cardiac events. However, very little is known about the peri-operative time course of copeptin or the feasibility of very early postoperative copeptin measurement to diagnose or rule-out myocardial injury. OBJECTIVES: In this preparatory analysis for a larger trial, we sought to examine the time course of peri-operative copeptin and identify the time at which concentrations returned to pre-operative levels...
May 9, 2018: European Journal of Anaesthesiology
Danish Ali, David Snead, Vijay Anand Dhakshinamurthy, Prithwish Banerjee
A 65-year-old lady and a 69-year-old gentleman, both with a background history of adult-onset asthma, presented with clinical features of heart failure (HF). High-sensitivity cardiac troponin T and eosinophils were significantly raised, along with poor left ventricular (LV) systolic function on cardiac imaging. Endocardial and skin biopsy (in cases 1 and 2, respectively) showed eosinophilic infiltration. This in combination with the clinical features confirmed the diagnosis of eosinophilic myocarditis (EM) secondary to eosinophilic granulomatosis with polyangiitis in case 1...
May 7, 2018: BMJ Case Reports
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