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cardiac troponin T

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https://www.readbyqxmd.com/read/29028161/effect-of-haemodialysis-and-residual-renal-function-on-serum-levels-of-galectin-3-b-type-natriuretic-peptides-and-cardiac-troponin-t
#1
Matthew A Roberts, Piyush M Srivastava, David L Hare, Francesco L Ierino
AIM: Levels of plasma markers of myocardial fibrosis (galectin-3), stretch (B-type natriuretic peptide (BNP)) and injury (troponin T (TnT)) may be affected by haemodialysis and residual renal function (RRF) in addition to cardiac pathology. We aimed to determine the association of RRF, urine output and haemodialysis itself on clinically important cardiac biomarkers in haemodialysis patients. METHODS: Adult haemodialysis patients underwent venesection pre- and post- haemodialysis followed by echocardiography and inter-dialytic urine collection to calculate RRF (mL/minute/1...
October 13, 2017: Nephrology
https://www.readbyqxmd.com/read/29027116/effect-of-intracoronary-and-intravenous-melatonin-on-myocardial-salvage-index-in-patients-with-st-elevation-myocardial-infarction-a-randomized-placebo-controlled-trial
#2
Sarah Ekeloef, Natalie Halladin, Siv Fonnes, Svend Eggert Jensen, Tomas Zaremba, Jacob Rosenberg, Grete Jonsson, Jens Aarøe, Lærke Smidt Gasbjerg, Mette Marie Rosenkilde, Ismail Gögenur
Melatonin has attenuated myocardial ischemia reperfusion injury in experimental studies. We hypothesized that the administration of melatonin during acute myocardial reperfusion improves myocardial salvage index in patients with ST-elevation myocardial infarction. Patients (n = 48) were randomized in a 1:1 ratio to intracoronary and intravenous melatonin (total 50 mg) or placebo. The myocardial salvage index assessed by cardiac magnetic resonance imaging at day 4 (± 1 day) after primary percutaneous coronary intervention was similar in the melatonin group (n = 22) at 55...
October 12, 2017: Journal of Cardiovascular Translational Research
https://www.readbyqxmd.com/read/29021851/cardiac-troponin-t-as-a-predictor-of-cardiac-death-in-patients-with-left-ventricular-dysfunction
#3
Hironori Nakamura, Shinichi Niwano, Hidehira Fukaya, Masami Murakami, Jun Kishihara, Akira Satoh, Tomoharu Yoshizawa, Jun Oikawa, Naruya Ishizue, Tazuru Igarashi, Tamami Fujiishi, Junya Ako
BACKGROUND: Cardiac troponin T (cTnT) has been reported to be associated with cardiac mortality. In the present study, we evaluated the role of routine assessment of cTnT as a predictor of future cardiac death in patients with left ventricular (LV) dysfunction. METHODS: Patients who were eligible for prophylactic implantable cardioverter defibrillator (ICD) were included from cardiac catheterization database. Inclusion criteria were patients with LV ejection fraction of ≤ 35% and with New York Heart Association (NYHA) ≥class II...
October 2017: Journal of Arrhythmia
https://www.readbyqxmd.com/read/29021775/cardiac-findings-in-amyotrophic-lateral-sclerosis-a-magnetic-resonance-imaging-study
#4
Angela Rosenbohm, Benjamin Schmid, Dominik Buckert, Wolfgang Rottbauer, Jan Kassubek, Albert C Ludolph, Peter Bernhardt
The objective of this study was to investigate the potential involvement of cardiac structure and function by cardiac magnetic resonance (CMR) imaging in amyotrophic lateral sclerosis (ALS) patients. Our study included 35 patients with ALS without a history of cardiac disease and an age- and gender-matched healthy control group (n = 34). All subjects received a CMR in a 1.5-T whole-body scanner. Patients were also screened with Holter monitoring, echocardiography, and a blood test of cardiac markers. Myocardial mass in ALS hearts was reduced compared to the control group, and ejection volumes in the left and right heart were severely decreased in ALS patients, as shown by echocardiography and CMR...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/29016754/cardiac-troponins-from-myocardial-infarction-to-chronic-disease
#5
Kyung Chan Park, David C Gaze, Paul O Collinson, Michael S Marber
Elucidation of the physiologically distinct subunits of troponin in 1973 greatly facilitated our understanding of cardiac contraction. Although troponins are expressed in both skeletal and cardiac muscle, there are isoforms of troponin I/T expressed selectively in the heart. By exploiting cardiac-restricted epitopes within these proteins, one of the most successful diagnostic tests to-date has been developed: cardiac troponin (cTn) assays. For the past decade, cTn has been regarded as the gold-standard marker for acute myocardial necrosis: the pathological hallmark of acute myocardial infarction (AMI)...
September 14, 2017: Cardiovascular Research
https://www.readbyqxmd.com/read/28992867/early-exclusion-of-major-adverse-cardiac-events-in-emergency-department-chest-pain-patients-a-prospective-observational-study
#6
Yuk-Ki Leung, Nga-Man Cheng, Cangel Pui-Yee Chan, Anna Lee, Jeffrey Ka-Tak Wong, Bryan Ping-Yen Yan, Anil Tejbhan Ahuja, Colin Alexander Graham, Timothy Hudson Rainer
BACKGROUND: The current evaluation of patients with chest pain presenting to an emergency department (ED) with suspected acute coronary syndrome (ACS) is a lengthy process involving serial measurements of troponin. OBJECTIVE: We aimed to validate the diagnostic accuracy of a Thrombolysis in Myocardial Infarction (TIMI) score with single high-sensitive cardiac troponin T (hs-cTnT) for early rule out of 30-day major adverse cardiac events (MACE), and to compare the TIMI score with combinations of heart-type fatty acid binding protein (H-FABP) and a modified HEART (history, electrocardiogram, age, risk factors, troponin) score...
September 2017: Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28989934/takotsubo-cardiomyopathy-with-a-rapidly-resolved-left-ventricular-thrombus
#7
Abdel Anabtawi, Paola C Roldan, Carlos A Roldan
This article presents the case of a 53-year-old man who presented with acute right superficial femoral and popliteal arterial thrombosis for which he underwent an emergent uncomplicated thrombectomy. He denied preceding cardiovascular or neurologic symptomatology and had no history of coronary or peripheral arterial disease, trauma, hypercoagulability, or malignancy. However, he reported having several days of intense emotional stress prior to presentation. His cardiac exam was normal, his electrocardiogram showed normal sinus rhythm and nonspecific ST-T wave abnormalities, and his troponin levels were normal...
July 2017: Journal of Investigative Medicine High Impact Case Reports
https://www.readbyqxmd.com/read/28986063/utility-of-the-0-hour-1-hour-high-sensitivity-cardiac-troponin-t-algorithm-in-asian-patients-with-suspected-non-st-elevation-myocardial-infarction
#8
Masayuki Shiozaki, Kenji Inoue, Satoru Suwa, Chien-Chang Lee, Yuichi Chikata, Junko Ishiura, Yuki Kimura, Kentaro Fukuda, Hiroshi Tamura, Yasumasa Fujiwara, Masataka Sumiyoshi, Hiroyuki Daida
BACKGROUND: A rapid rule-out or rule-in protocol based on the 0-hour/1-hour algorithm using high-sensitivity cardiac troponin T is recommended by the European Society of Cardiology. However, Asian data are not available. METHODS: This prospective cohort study included 413 patients with suspected non-ST elevation myocardial infarction in 3 hospitals in Japan and Taiwan from November 2014 to April 2017. Patients were divided into 3groups-rule-out, observe, and rule-in-according to the algorithm...
September 30, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28986060/the-prognostic-utility-of-dihomo-gamma-linolenic-acid-dgla-in-patients-with-acute-coronary-heart-disease
#9
Dennis W T Nilsen, Hildegunn Aarsetoey, Volker Pönitz, Trygve Brugger-Andersen, Harry Staines, William S Harris, Heidi Grundt
BACKGROUND: We previously investigated the prognostic utility of red blood cell (RBC) n-3 fatty acids (FAs) in survivors of an acute myocardial syndrome (ACS) but found no relationship with all-cause mortality and cardiac death or MI after two years. Here we extend our follow-up to 7years, focusing on the potential predictive power of RBC n-6 FAs. METHODS: We included 398 ACS patients presenting with increased troponin-T (TnT) levels for whom baseline RBC FA data were available...
September 29, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28985715/acute-transient-spinal-paralysis-and-cardiac-symptoms-following-an-accidental-epidural-potassium-infusion-a-case-report
#10
Martin Kreutzträger, Marcel A Kopp, Thomas Liebscher
BACKGROUND: To describe a case of an accidental epidural potassium infusion leading to an acute transient spinal paralysis and cardiac symptoms and review the literature on that topic. CASE PRESENTATION: We report the case of an accidental infusion of 900 mg potassium chloride 7.45% (KCl) into the epidural space, which occurred during epidural analgesia in a 74-year-old patient suffering from immobilization due to lumbar back pain as well as from a paralytic Ileus...
October 6, 2017: BMC Anesthesiology
https://www.readbyqxmd.com/read/28984632/effect-of-high-dose-allopurinol-pretreatment-on-cardiac-biomarkers-of-patients-undergoing-elective-percutaneous-coronary-intervention-a-randomized-clinical-trial
#11
Mohammad Javad Alemzadeh-Ansari, Seyed Kianoosh Hosseini, Azita Hajhossein Talasaz, Mohammad Mohammadi, Masumeh Lotfi Tokaldani, Arash Jalali, Hamidreza Pourhosseini
BACKGROUND: Increased accumulation of reactive oxygen species contributes to pathophysiologic states such as endothelial dysfunction, metabolic and functional impairment, inflammatory activation, and other features of cardiovascular pathophysiology. Allopurinol acts as a xanthine oxidase inhibitor that reduces the amount of free radicals after reactive oxygen species generation. METHODS AND RESULTS: In this placebo-controlled randomized clinical trial, all patients admitted with coronary artery disease who are candidates for elective percutaneous coronary intervention (PCI) were included...
September 27, 2017: American Journal of Therapeutics
https://www.readbyqxmd.com/read/28983818/in-search-of-an-efficient-strategy-to-monitor-disease-status-of-chronic-heart-failure-outpatients-added-value-of-blood-biomarkers-to-clinical-assessment
#12
N van Boven, K M Akkerhuis, S S Anroedh, L C Battes, K Caliskan, W Yassi, O C Manintveld, J H Cornel, A A Constantinescu, H Boersma, V A Umans, I Kardys
INTRODUCTION: Blood biomarkers have the potential to monitor the severity of chronic heart failure (CHF). Studies correlating repeated measurements of blood biomarkers with repeatedly assessed New York Heart Association (NYHA) class over a prolonged follow-up period, and concomitantly investigating their associations with clinical endpoints, have not yet been performed. METHODS: Between 2011-2013, 263 CHF patients were included. At inclusion and subsequently every 3 months, we measured N‑terminal pro-B-type natriuretic (NT-proBNP), high-sensitivity troponin T (Hs-TnT) and C‑reactive protein (CRP), and assessed NYHA class...
October 5, 2017: Netherlands Heart Journal
https://www.readbyqxmd.com/read/28980281/evaluating-the-effects-of-cardiac-resynchronization-therapy-on-pathophysiological-pathways-of-heart-failure-using-surrogate-biomarkers
#13
Hamza Sunman, Adem Özkan, Hikmet Yorgun, Uğur Canpolat, Erdem Karabulut, Tülin Bayrak, Ergün Barış Kaya, Lale Tokgözoğlu, Necla Özer, Asuman Özkara, Kudret Aytemir, Ali Oto
BACKGROUND: Several studies have investigated the effects of cardiac resynchronization therapy (CRT) on heart failure (HF), but none have evaluated the pathophysiological pathways involved in a single group of patients. Therefore, this study aims to assess the long-term effects of CRT on six different pathophysiological pathways involved in the process of HF by the use of surrogate biomarkers. METHODS: In a group 44 patients with HF, six groups of biomarkers were measured, both at baseline and 1 year after CRT implantation: Inflammation (interleukin [IL]-4, IL-6, tumor necrosis factor [TNF]-α, high sensitive C-reactive protein [hsCRP]); oxidative stress (myeloperoxidase, oxidized low-density lipoprotein [oxLDL], uric acid); extracellular matrix (ECM) remodeling (matrix metalloproteinase [MMP]-2 and -9, galectin-3, procollagen III N-terminal propeptide [prokol-3NT]); neurohormonal pathways (endothelin-1, chromogranin-A); myocyte injury (troponin T, creatine kinase MB fraction [CK-MB]), myocyte stress (B-type natriuretic peptide [BNP])...
October 5, 2017: Cardiology Journal
https://www.readbyqxmd.com/read/28978339/high-sensitivity-troponin-t-and-i-reflect-mitral-annular-plane-systolic-excursion-being-assessed-by-cardiac-magnetic-resonance-imaging
#14
Michèle Natale, Michael Behnes, Seung-Hyun Kim, Julia Hoffmann, Nadine Reckord, Ursula Hoffmann, Johannes Budjan, Siegfried Lang, Martin Borggrefe, Theano Papavassiliu, Thomas Bertsch, Ibrahim Akin
PURPOSE: This study aims to evaluate the association between high sensitivity troponins (hsTn) and mitral annular plane systolic excursion (MAPSE) in patients undergoing cardiac magnetic resonance imaging (cMRI). METHODS: Patients undergoing cMRI were prospectively enrolled. Patients with right ventricular dysfunction (< 50%) were excluded. Blood samples for measurements of hsTn and amino-terminal pro-brain natriuretic peptide (NT-proBNP) were collected at the time of cMRI...
October 4, 2017: European Journal of Medical Research
https://www.readbyqxmd.com/read/28974076/association-between-preoperative-pulse-pressure-and-perioperative-myocardial-injury-an-international-observational-cohort-study-of-patients-undergoing-non-cardiac-surgery
#15
T E F Abbott, R M Pearse, R A Archbold, A Wragg, E Kam, T Ahmad, A W Khan, E Niebrzegowska, R N Rodseth, P J Devereaux, G L Ackland
Background: The management of elevated blood pressure before non-cardiac surgery remains controversial. Pulse pressure is a stronger predictor of cardiovascular morbidity in the general population than systolic blood pressure alone. We hypothesized that preoperative pulse pressure was associated with perioperative myocardial injury. Methods: This is a secondary analysis of the Vascular Events in Non-cardiac Surgery Patients Cohort Evaluation (VISION) international cohort study...
July 1, 2017: British Journal of Anaesthesia
https://www.readbyqxmd.com/read/28973951/molecular-mechanisms-and-structural-features-of-cardiomyopathy-causing-troponin-t-mutants-in-the-tropomyosin-overlap-region
#16
Binnu Gangadharan, Margaret S Sunitha, Souhrid Mukherjee, Ritu Roy Chowdhury, Farah Haque, Narendrakumar Sekar, Ramanathan Sowdhamini, James A Spudich, John A Mercer
Point mutations in genes encoding sarcomeric proteins are the leading cause of inherited primary cardiomyopathies. Among them are mutations in the TNNT2 gene that encodes cardiac troponin T (TnT). These mutations are clustered in the tropomyosin (Tm) binding region of TnT, TNT1 (residues 80-180). To understand the mechanistic changes caused by pathogenic mutations in the TNT1 region, six hypertrophic cardiomyopathy (HCM) and two dilated cardiomyopathy (DCM) mutants were studied by biochemical approaches. Binding assays in the absence and presence of actin revealed changes in the affinity of some, but not all, TnT mutants for Tm relative to WT TnT...
October 2, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28973208/correction-rapid-rule-out-of-acute-myocardial-infarction-with-a-single-high-sensitivity-cardiac-troponin-t-measurement-below-the-limit-of-detection
#17
(no author information available yet)
No abstract text is available yet for this article.
October 3, 2017: Annals of Internal Medicine
https://www.readbyqxmd.com/read/28971953/rapamycin-and-chir99021-coordinate-robust-cardiomyocyte-differentiation-from-human-pluripotent-stem-cells-via-reducing-p53-dependent-apoptosis
#18
Xiao-Xu Qiu, Yang Liu, Yi-Fan Zhang, Ya-Na Guan, Qian-Qian Jia, Chen Wang, He Liang, Yong-Qin Li, Huang-Tian Yang, Yong-Wen Qin, Shuang Huang, Xian-Xian Zhao, Qing Jing
BACKGROUND: Cardiomyocytes differentiated from human pluripotent stem cells can serve as an unexhausted source for a cellular cardiac disease model. Although small molecule-mediated cardiomyocyte differentiation methods have been established, the differentiation efficiency is relatively unsatisfactory in multiple lines due to line-to-line variation. Additionally, hurdles including line-specific low expression of endogenous growth factors and the high apoptotic tendency of human pluripotent stem cells also need to be overcome to establish robust and efficient cardiomyocyte differentiation...
October 2, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28966019/n-terminal-pro-b-type-natriuretic-peptide-and-high-sensitivity-cardiac-troponin-t-levels-are-related-to-the-extent-of-hibernating-myocardium-in-patients-with-ischemic-heart-failure
#19
Jason G E Zelt, Peter P Liu, Fernanda Erthal, Robert A deKemp, George Wells, Eileen O'Meara, Linda Garrard, Rob S B Beanlands, Lisa M Mielniczuk
BACKGROUND: Increased N-terminal pro b-type natriuretic peptide (NT-proBNP) and high-sensitivity cardiac troponin T (hs-cTnT) can identify patients with heart failure (HF) who are at increased risk of cardiac events. The relationship of these biomarkers to the extent of hibernating myocardium and scar has not been previously characterized in patients with ischemic left ventricular dysfunction and HF. METHODS: Patients with ischemic HF meeting recruitment criteria and undergoing perfusion and fluorodeoxyglucose-positron emission tomography to define myocardial hibernation and scar were included in the study...
June 27, 2017: Canadian Journal of Cardiology
https://www.readbyqxmd.com/read/28962818/bmp-2-combined-with-salvianolic-acid-b-promotes-cardiomyocyte-differentiation-of-rat-bone-marrow-mesenchymal-stem-cells
#20
Yang Lv, Chen-Wei Gao, Bo Liu, Hao-Yu Wang, Hai-Ping Wang
The present study tested the hypotheses that bone morphogenetic protein 2(BMP-2) combined with salvianolic acid B(Sal-B) enhance the differentiation of rat bone marrow mesenchymal stem cells (BMSCs) towards cardiomyocytes in vitro. BMSCs were treated with BMP-2 and Sal-B, alone or in combination, for 72 h, then added new media (excluding inductive substance) and cultured for 4 weeks. The morphologic characteristics, surface antigens and mRNA expression of several transcription factors were also assessed. We found that they could all be identified by the positive staining for cardiomyocyte-specific proteins, desmin and cardiac troponin T, in these cells...
October 2017: Kaohsiung Journal of Medical Sciences
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