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Cardiac biomarkers

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https://www.readbyqxmd.com/read/28649997/characterizing-sleep-spindles-in-11-630-individuals-from-the-national-sleep-research-resource
#1
S M Purcell, D S Manoach, C Demanuele, B E Cade, S Mariani, R Cox, G Panagiotaropoulou, R Saxena, J Q Pan, J W Smoller, S Redline, R Stickgold
Sleep spindles are characteristic electroencephalogram (EEG) signatures of stage 2 non-rapid eye movement sleep. Implicated in sleep regulation and cognitive functioning, spindles may represent heritable biomarkers of neuropsychiatric disease. Here we characterize spindles in 11,630 individuals aged 4 to 97 years, as a prelude to future genetic studies. Spindle properties are highly reliable but exhibit distinct developmental trajectories. Across the night, we observe complex patterns of age- and frequency-dependent dynamics, including signatures of circadian modulation...
June 26, 2017: Nature Communications
https://www.readbyqxmd.com/read/28649027/sample-preparation-for-detection-of-low-abundance-proteins-in-human-plasma-using-ultra-high-performance-liquid-chromatography-coupled-with-highly-accurate-mass-spectrometry
#2
Yunseo Seong, Young Sook Yoo, Hafeza Akter, Min-Jung Kang
Proteomics is a valuable approach to discover biomarkers in human plasma for early diagnosis. However, detection of biomarkers in the plasma is still challenging because of its large protein content. In our study, we established albumin/IgG depletion methods for identification of low abundance proteins using two commercial kits with additional buffer conditions and various concentrations of cold acetone. Trypsin digestion, desalting, and data-dependent acquisition were also optimized. More than 80% depletion of albumin/IgG was achieved with two commercial kits and 98% depletion of albumin was obtained with 70% cold acetone...
June 16, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/28645934/repeated-measurements-of-cardiac-biomarkers-in-atrial-fibrillation-and-validation-of-the-abc-stroke-score-over-time
#3
Ziad Hijazi, Bertil Lindahl, Jonas Oldgren, Ulrika Andersson, Johan Lindbäck, Christopher B Granger, John H Alexander, Bernard J Gersh, Michael Hanna, Veli-Pekka Harjola, Elaine M Hylek, Renato D Lopes, Agneta Siegbahn, Lars Wallentin
BACKGROUND: Cardiac biomarkers are independent risk markers in atrial fibrillation, and the novel biomarker-based ABC stroke score (age, biomarkers, and clinical history of prior stroke) was recently shown to improve the prediction of stroke risk in patients with atrial fibrillation. Our aim was to investigate the short-term variability of the cardiac biomarkers and evaluate whether the ABC stroke risk score provides a stable short-term risk estimate. METHODS AND RESULTS: According to the study protocol, samples were obtained at entry and also at 2 months in 4796 patients with atrial fibrillation followed for a median of 1...
June 23, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28645882/cardiopreventive-effect-of-ethanolic-extract-of-date-palm-pollen-against-isoproterenol-induced-myocardial-infarction-in-rats-through-the-inhibition-of-the-angiotensin-converting-enzyme
#4
Amal Daoud, Fedia Ben Mefteh, Kais Mnafgui, Mouna Turki, Salwa Jmal, Rawdha Ben Amar, Fatma Ayadi, Abdelfattah ElFeki, Leila Abid, Mostafa E Rateb, Lassaad Belbahri, Adel Kadri, Neji Gharsallah
The present study aimed to examine the putative preventive effect of the ethanolic extract Date Palm Pollen (DPP, Phoenix dactylifera L., family Arecaceae) on isoproterenol-induced myocardial infarction (MI) in rats. Twenty four rats were randomly divided into four groups including control. They were treated with DPP extract (400mg/kg) and clopidogrel (0.2mg/kg) for 7days followed by myocardial injury induction using subcutaneous isoproterenol (100mg/kg) with an interval of 24h for two days (6th and 7th day)...
June 20, 2017: Experimental and Toxicologic Pathology: Official Journal of the Gesellschaft Für Toxikologische Pathologie
https://www.readbyqxmd.com/read/28642833/creating-a-biomarker-panel-for-early-detection-of-chemotherapy-related-cardiac-dysfunction-in-breast-cancer-patients
#5
Krithika Srikanthan, Rebecca Klug, Maria Tirona, Ellen Thompson, Haresh Visweshwar, Nitin Puri, Joseph Shapiro, Komal Sodhi
Cardiotoxicity is an important issue for breast cancer patients receiving anthracycline-trastuzumab therapy in the adjuvant setting. Studies show that 3-36% of patients receiving anthracyclines and/or trastuzumab experience chemotherapy related cardiac dysfunction (CRCD) and approximately 17% of patients must stop chemotherapy due to the consequences of CRCD. There is currently no standardized, clinically verified way to detect CRCD early, but common practices include serial echocardiography and troponin measurements, which can be timely, costly, and not always available in areas where health care resources are scarce...
March 2017: Journal of Clinical & Experimental Cardiology
https://www.readbyqxmd.com/read/28641514/clinically-relevant-biomarkers-in-acute-heart-failure-an-update
#6
Agnibh Mukherji, Uzair Ansari, Martin Borggrefe, Ibrahim Akin, Michael Behnes
Acute heart failure (AHF) has been one of the fields, where owing to difficulties in diagnosis, prognostic stratification and management the associated morbidity and mortality remains unusually high. The advent of novel biomarkers apart from the traditional B-type natriuretic peptide and N-terminal proBNP involved in myocardial injury, neuro-hormonal activation, and ventricular remodeling augurs immense hope in redefining our approach towards AHF. METHODS: Biomarkers like midregional proatrial natriuretic peptide, soluble ST2, highly-sensitive troponin, and midregional proadrenomedullin are some such examples that have passed various stages of substantiation while there is an array of potential biomarkers in nascent stages like osteopontin, CTGF, GDF-15 and TGF beta-1 awaiting further reiteration...
June 22, 2017: Current Pharmaceutical Biotechnology
https://www.readbyqxmd.com/read/28640451/cardiac-fibrosis-and-arrhythmogenesis
#7
My-Nhan Nguyen, Helen Kiriazis, Xiao-Ming Gao, Xiao-Jun Du
Myocardial injury, mechanical stress, neurohormonal activation, inflammation, and/or aging all lead to cardiac remodeling, which is responsible for cardiac dysfunction and arrhythmogenesis. Of the key histological components of cardiac remodeling, fibrosis either in the form of interstitial, patchy, or dense scars, constitutes a key histological substrate of arrhythmias. Here we discuss current research findings focusing on the role of fibrosis, in arrhythmogenesis. Numerous studies have convincingly shown that patchy or interstitial fibrosis interferes with myocardial electrophysiology by slowing down action potential propagation, initiating reentry, promoting after-depolarizations, and increasing ectopic automaticity...
June 18, 2017: Comprehensive Physiology
https://www.readbyqxmd.com/read/28639369/a-network-analysis-to-compare-biomarker-profiles-in-patients-with-and-without-diabetes-mellitus-in-acute-heart-failure
#8
Abhinav Sharma, Biniyam G Demissei, Jasper Tromp, Hans L Hillege, John G Cleland, Christopher M O'Connor, Marco Metra, Piotr Ponikowski, John R Teerlink, Beth A Davison, Michael M Givertz, Daniel M Bloomfield, Howard Dittrich, Dirk J van Veldhuisen, Gad Cotter, Justin A Ezekowitz, Mohsin A F Khan, Adriaan A Voors
AIMS: It is unclear whether distinct pathophysiological processes are present among patients with acute heart failure (AHF), with and without diabetes. Network analysis of biomarkers may identify correlative associations that reflect different pathophysiological pathways. METHODS AND RESULTS: We analysed a panel of 48 circulating biomarkers measured within 24 h of admission for AHF in a subset of patients enrolled in the PROTECT trial. In patients with and without diabetes, we performed a network analysis to identify correlations between measured biomarkers...
June 21, 2017: European Journal of Heart Failure
https://www.readbyqxmd.com/read/28639234/novel-biomarkers-of-subclinical-cardiac-dysfunction-in-the-general-population
#9
REVIEW
Kamal Shemisa, Anish Bhatt, Daniel Cheeran, Ian J Neeland
PURPOSE OF REVIEW: Recognition of subclinical myocardial dysfunction offers clinicians and patients an opportunity for early intervention and prevention of symptomatic cardiovascular disease. We review the data on novel biomarkers in subclinical heart disease in the general population with a focus on pathophysiology, recent observational or trial data, and potential applicability and pitfalls for clinical use. RECENT FINDINGS: High-sensitivity cardiac troponin and natriuretic peptide assays are powerful markers of subclinical cardiac disease...
June 21, 2017: Current Heart Failure Reports
https://www.readbyqxmd.com/read/28636127/nonmediated-label-free-based-detection-of-cardiovascular-biomarker-in-a-biological-sample
#10
JuKyung Lee, SuRyon Shin, Anna Desalvo, Geonhui Lee, Jeong Yoon Lee, Alessandro Polini, Sukyoung Chae, Hobin Jeong, Jonghan Kim, Haksoo Choi, HeaYeon Lee
Direct electrochemical (EC) monitoring in a cell culture medium without electron transporter as called mediator is attractive topic in vitro organoid based on chip with frequently and long-time monitoring since it can avoid to its disadvantage as stability, toxicity. Here, direct monitoring with nonmediator is demonstrated based on impedance spectroscopy under the culture medium in order to overcome the limitation of mediator. The applicability of EC monitoring is shown by detecting alpha-1-anti trypsin (A1AT) which is known as biomarkers for cardiac damage and is widely chosen in organoid cardiac cell-based chip...
June 21, 2017: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/28635904/-myocardial-fibrosis-current-aspects-of-the-problem
#11
V N Karetnikova, V V Kashtalap, S N Kosareva, O L Barbarash
Fibrosis is one of the main components in the progression of most cardiovascular diseases, including coronary heart disease, by causing structural changes in the myocardium and vascular wall. The quantitative and qualitative characteristics of fibrosis of the myocardium are responsible for decreasing its elastic properties, developing diastolic dysfunction, impairing myocardial contractility, developing systolic dysfunction and cardiac arrhythmias, and worsening coronary blood flow in patients with heart failure of different etiologies...
2017: Terapevticheskiĭ Arkhiv
https://www.readbyqxmd.com/read/28635193/comparing-the-effect-of-cardiac-biomarkers-on-the-outcome-of-normotensive-patients-with-acute-pulmonary-embolism
#12
Yaser Jenab, Marzieh Pourjafari, Maryam Sotoudeh, Masoumeh Lotfi-Tokaldany, Nasrin Etesamifard, Shapour Shirani, Arash Jalali, Younes Nozari, Hamid-Reza Poorhosseini
Acute pulmonary embolism (PE) is a cardiovascular challenge with potentially fatal consequences. This study was designed to observe the association of novel cardiac biomarkers with outcome in this setting. In this prospective study, from 86 patients with a confirmed diagnosis of PE, 59 patients met the inclusion criteria (22 men, 37 women; mean age, 63.36±15.04 y).The plasma concentrations of N-terminal pro-brain natriuretic peptide (NT-proBNP), growth differentiation factor-15 (GDF-15), heart-type fatty acid-binding protein (H-FABP), tenascin-C, and D-dimer were measured at the time of confirmed diagnosis...
May 18, 2017: Monaldi Archives for Chest Disease, Archivio Monaldi Per le Malattie del Torace
https://www.readbyqxmd.com/read/28632734/choroidal-thickness-in-patients-with-coronary-artery-disease
#13
Meleha Ahmad, Patrick A Kaszubski, Lucy Cobbs, Harmony Reynolds, Roland Theodore Smith
PURPOSE: To evaluate choroidal thickness (CTh) in patients with coronary artery disease (CAD) compared to healthy controls. DESIGN: Cross-sectional. METHODS: Setting: Ambulatory clinic of a large city hospital. Patient population: Thirty-four patients had documented CAD, defined as history of >50% obstruction in at least one coronary artery on cardiac catheterization, positive stress test, ST elevation myocardial infarction, or revascularization procedure...
2017: PloS One
https://www.readbyqxmd.com/read/28625611/comparing-sf-36%C3%A2-scores-versus-biomarkers-to-predict-mortality-in-primary-cardiac-prevention-patients
#14
EDITORIAL
Rony Lahoud, Vasutakarn Chongthammakun, Yuping Wu, Nael Hawwa, Danielle M Brennan, Leslie Cho
BACKGROUND: Risk stratification plays an important role in evaluating patients with no known cardiovascular disease (CVD). Few studies have investigated health-related quality of life questionnaires such as the Medical Outcomes Study Short Form-36 (SF-36®) as predictive tools for mortality, particularly in direct comparison with biomarkers. Our objective is to measure the relative effectiveness of SF-36® scores in predicting mortality when compared to traditional and novel biomarkers in a primary prevention population...
June 15, 2017: European Journal of Internal Medicine
https://www.readbyqxmd.com/read/28625246/-effects-of-high-flow-hemodialysis-on-the-biomarker-of-myocardium-injury-and-the-cardiac-function-related-records-in-uremia-patients
#15
Ling Tang, Xiaofeng Deng, Qing Dai, Hengfen Xiao, Yue Shu, Min Jiang, Ling Wei, Li Wang
OBJECTIVE: To investigate the effects of high flow hemodialysis (HFHD) on cardiac function in uremia patients. METHODS: A prospective randomized controlled study was conducted. Sixty patients who were diagnosed with uremia, taken maintenance hemodialysis (MHD) and 30 healthy controls admitted to the Second People's Hospital of Guiyang from December 2014 to June 2015 were enrolled. They were randomly divided into two groups: HFHD group (HFHD three times a week) and the routine hemodialysis group (HD group, HD three times a week), with 30 in each group...
June 2017: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/28624985/dusp1-and-kcnj2-mrna-upregulation-can-serve-as-a-biomarker-of-mechanical-asphyxia-induced-death-in-cardiac-tissue
#16
Yan Zeng, Li Tao, Jianlong Ma, Liujun Han, Yehui Lv, Pan Hui, Heng Zhang, Kaijun Ma, Bi Xiao, Qun Shi, Hongmei Xu, Long Chen
The incidence of death by asphyxia is second to the incidence of death by mechanical injury; however, death by mechanical asphyxia may be difficult to prove in court, particularly in cases in which corpses do not exhibit obvious signs of asphyxia. To identify a credible biomarker of asphyxia, we first examined the expression levels of 47,000 mRNAs in human cardiac tissue specimens from individuals who died of mechanical asphyxia and compared the expression levels with the levels of the corresponding mRNAs in specimens from individuals who died of craniocerebral injury using microarray...
June 17, 2017: International Journal of Legal Medicine
https://www.readbyqxmd.com/read/28624483/biomarker-profiles-of-acute%C3%A2-heart%C3%A2-failure%C3%A2-patients-with-a%C3%A2-mid-range-ejection%C3%A2-fraction
#17
Jasper Tromp, Mohsin A F Khan, Robert J Mentz, Christopher M O'Connor, Marco Metra, Howard C Dittrich, Piotr Ponikowski, John R Teerlink, Gad Cotter, Beth Davison, John G F Cleland, Michael M Givertz, Daniel M Bloomfield, Dirk J van Veldhuisen, Hans L Hillege, Adriaan A Voors, Peter van der Meer
OBJECTIVES: In this study, the authors used biomarker profiles to characterize differences between patients with acute heart failure with a midrange ejection fraction (HFmrEF) and compare them with patients with a reduced (heart failure with a reduced ejection fraction [HFrEF]) and preserved (heart failure with a preserved ejection fraction [HFpEF]) ejection fraction. BACKGROUND: Limited data are available on biomarker profiles in acute HFmrEF. METHODS: A panel of 37 biomarkers from different pathophysiological domains (e...
May 31, 2017: JACC. Heart Failure
https://www.readbyqxmd.com/read/28624396/hybrid-magnetic-resonance-imaging-and-positron-emission-tomography-with-fluorodeoxyglucose-to-diagnose-active-cardiac-sarcoidosis
#18
Marc R Dweck, Ronan Abgral, Maria Giovanna Trivieri, Philip M Robson, Nicolas Karakatsanis, Venkatesh Mani, Anna Palmisano, Marc A Miller, Anuradha Lala, Helena L Chang, Javier Sanz, Johanna Contreras, Jagat Narula, Valentin Fuster, Maria Padilla, Zahi A Fayad, Jason C Kovacic
OBJECTIVES: The purpose of this study was to explore the diagnostic usefulness of hybrid cardiac magnetic resonance (CMR) and positron emission tomography (PET) using 18F-fluorodeoxyglucose (FDG) for active cardiac sarcoidosis. BACKGROUND: Active cardiac sarcoidosis (aCS) is underdiagnosed and has a high mortality. METHODS: Patients with clinical suspicion of aCS underwent hybrid CMR/PET with late gadolinium enhancement (LGE) and FDG to assess the pattern of injury and disease activity, respectively...
June 9, 2017: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/28623475/t1-mapping-in-cardiac-mri
#19
REVIEW
Dina Radenkovic, Sebastian Weingärtner, Lewis Ricketts, James C Moon, Gabriella Captur
Quantitative myocardial and blood T1 have recently achieved clinical utility in numerous pathologies, as they provide non-invasive tissue characterization with the potential to replace invasive biopsy. Native T1 time (no contrast agent), changes with myocardial extracellular water (edema, focal or diffuse fibrosis), fat, iron, and amyloid protein content. After contrast, the extracellular volume fraction (ECV) estimates the size of the extracellular space and identifies interstitial disease. Spatially resolved quantification of these biomarkers (so-called T1 mapping and ECV mapping) are steadily becoming diagnostic and prognostically useful tests for several heart muscle diseases, influencing clinical decision-making with a pending second consensus statement due mid-2017...
June 16, 2017: Heart Failure Reviews
https://www.readbyqxmd.com/read/28619659/effects-of-canagliflozin-on-cardiovascular-biomarkers-in-older-adults-with-type-2-diabetes
#20
James L Januzzi, Javed Butler, Petr Jarolim, Naveed Sattar, Ujjwala Vijapurkar, Mehul Desai, Michael J Davies
BACKGROUND: Sodium glucose co-transporter 2 (SGLT2) inhibitors may reduce cardiovascular and heart failure risk in patients with type 2 diabetes mellitus (T2DM). OBJECTIVES: To examine the effects of canagliflozin on cardiovascular biomarkers in older patients with T2DM. METHODS: In 666 T2DM patients randomized to receive canagliflozin 100 or 300 mg or placebo, we assessed median percent change in serum N-terminal pro-B type natriuretic peptide (NT-proBNP), high-sensitivity troponin I (hsTnI) , soluble (s)ST2, and galectin-3 from baseline to 26, 52, and 104 weeks...
June 9, 2017: Journal of the American College of Cardiology
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