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https://www.readbyqxmd.com/read/28817771/ice-templated-and-cross-linked-amyloid-fibril-aerogel-scaffolds-for-cell-growth
#1
Gustav Nyström, Wye-Khay Fong, Raffaele Mezzenga
Amyloid fibrils prepared from β-lactoglobulin were used to form freeze-dried and cross-linked aerogels. By varying the fibril concentration and freezing gradient, it was possible to control the pore structure and elastic modulus of the aerogels over one order of magnitude from ~2 to ~200 kPa. Using butane tetracarboxylic acid as cross-linker these aerogels maintained their monolithic shape in aqueous conditions displaying elastic behavior and a modulus in the range of 4-40 kPa. When explored as scaffolds for cell growth, the amyloid fibril aerogels demonstrated biocompatibility and led to the successful penetration and permeation of two epithelial cell lines (Caco-2 and HT29) throughout the scaffold...
August 17, 2017: Biomacromolecules
https://www.readbyqxmd.com/read/28817542/safety-of-transesophageal-echocardiography%C3%A2-guided-electrical-cardioversion-in-patients-with-atrial-fibrillation-and-inadequate-anticoagulation
#2
Joanna Zaprutko, Artur Baszko, Michał Michalak, Karol Kochman, Radosław Szymański, Jan Kłopocki, Anna Nowicka, Rafał Dankowski, Marek Michalski, Piotr Kałmucki, Andrzej Szyszka
INTRODUCTION    Restoring sinus rhythm in patients with atrial fibrillation (AF)/atrial flutter (AFl) requires adequate oral anticoagulation prior to direct current cardioversion (DCC). Some patients eligible for DCC are not properly anticoagulated. OBJECTIVES    The aim of the study was to assess risk factors for thrombus and spontaneous echo contrast (SEC) in the left atrium (LA) as well as the safety profile of transesophageal echocardiography (TEE)-guided DCC in patients with inadequate anticoagulation...
August 9, 2017: Polish Archives of Internal Medicine
https://www.readbyqxmd.com/read/28817537/echocardiography-in-patients-undergoing-cardioversion-for-atrial-fibrillation-and-inadequate-anticoagulation-a-step-beyond-towards-maximum-safety
#3
Paolo Colonna, Ilaria Dentamaro
No abstract text is available yet for this article.
August 9, 2017: Polish Archives of Internal Medicine
https://www.readbyqxmd.com/read/28817252/experimental-and-theoretical-insights-into-the-inhibition-mechanism-of-prion-fibrillation-by-resveratrol-and-its-derivatives
#4
Lanlan Li, Yongchang Zhu, Shuangyan Zhou, Xiaoli An, Yan Zhang, Qifeng Bai, Yong-Xing He, Huanxiang Liu, Xiao-Jun Yao
Resveratrol and its derivatives have been shown to display beneficial effects to neurodegenerative diseases. However, the molecular mechanism of resveratrol and its derivatives on prion conformational conversion is poorly understood. In this work, the interaction mechanism between prion and resveratrol as well as its derivatives were investigated using steady-state fluorescence quenching, Thioflavin T binding assay, western blotting and molecular dynamics simulation. Protein fluorescence quenching method and Thioflavin T assay revealed that resveratrol and its derivatives could interact with prion and interrupt prion fibrils formation...
August 17, 2017: ACS Chemical Neuroscience
https://www.readbyqxmd.com/read/28816946/prognostic-factors-of-clinical-endpoints-in-elderly-patients-with-atrial-fibrillation-during-a-2-year-follow-up-in-china-an-observational-cohort-study
#5
Hao Wang, Hai-Jun Wang, Ya-Dong Chen, Tao Tao, Yu-Tao Guo, Xiao-Ning Zhao, Hong-Bin Liu, Yu-Tang Wang
This study aimed to reveal the incidence of clinical endpoints in elderly patients with atrial fibrillation (AF) during a 2-year follow-up and evaluate the related prognostic factors of these endpoints.In total, 200 elderly patients with AF and 400 age- and sex-matched patients without AF were enrolled in this prospective observational cohort study. The incidence of clinical endpoints, including thromboembolism, hemorrhage, and all-cause death, during the 2-year follow-up was analyzed. Other follow-up data, including disease history, laboratory examinations, medication status, and other clinical endpoints, were collected...
August 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28816774/practitioner-gender-and-quality-of-care-in-ambulatory-cardiology-practices-a-report-from-the-national-cardiovascular-data-practice-innovation-and-clinical-excellence-pinnacle-registry
#6
Dipti Gupta, Fengming Tang, Frederick A Masoudi, Philip G Jones, Paul S Chan, Stacie L Daugherty
BACKGROUND: Some studies suggest that female practitioners are more likely to provide guideline-concordant care than male practitioners; however, little is known about the role of practitioner gender in cardiology. OBJECTIVE: The aim of the study was to measure the association between practitioner gender and adherence to the cardiovascular performance measures in the American College of Cardiology's ambulatory Practice Innovation and Clinical Excellence Registry...
August 15, 2017: Journal of Cardiovascular Nursing
https://www.readbyqxmd.com/read/28816723/melphalan-induced-atrial-fibrillation
#7
Amish J Shah, Semaan Kobrossi, Amishi Desai
No abstract text is available yet for this article.
August 8, 2017: American Journal of Therapeutics
https://www.readbyqxmd.com/read/28816429/smart-cellulose-nanofluids-produced-by-tunable-hydrophobic-association-of-polymer-grafted-cellulose-nanocrystals
#8
Yea Ram Lee, Daehwan Park, Sang Koo Choi, Miju Kim, Heung Soo Baek, Jin Nam, Chan Bok Chung, Chinedum O Osuji, Jin Woong Kim
Cellulose fibrils, unique plant-derived semi-crystalline nanomaterials with exceptional mechanical properties, have significant potential for rheology modification of complex fluids due to their ability to form a physically associated semi-flexible fibrillary network. Here, we report new associative cellulose nanocrystals (ACNCs) with stress-responsive rheological behaviors in an aqueous solution. The surface-mediated living radical polymerization was employed to graft poly (stearyl methacrylate-co-2-methacryloxyethyl phosphorylcholine) brushes onto the nanofibrils, and then 2,2,6,6-tetramethylpiperidine-1-oxyl radical (TEMPO)-mediated oxidation was conducted to produce nanoscale ACNCs in the aqueous solution...
August 17, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28815554/severe-disruption-and-disorganization-of-dermal-collagen-fibrils-in-early-striae-gravidarum
#9
F Wang, K Calderone, T T Do, N R Smith, Y R Helfrich, T R B Johnson, S Kang, J J Voorhees, G J Fisher
BACKGROUND: Striae gravidarum (SG), or stretch marks of pregnancy, begin as erythematous streaks, and mature into hypopigmented atrophic bands. OBJECTIVES: To investigate molecular alterations that may promote atrophy of SG, we investigated dermal type I collagen fibrils, which provide human skin with support. METHODS: We obtained skin samples of recently developed, erythematous abdominal SG from pregnant women. To examine the organization of collagen fibrils, second-harmonic generation imaging was performed using multiphoton microscopy...
August 17, 2017: British Journal of Dermatology
https://www.readbyqxmd.com/read/28815189/a-case-of-pulmonary-vein-thrombosis-associated-with-treatment-of-omalizumab
#10
Sandhya Narukonda, Nagadarshini Ramagiri Vinod, Medha Joshi
Pulmonary vein thrombosis (PVT) is a challenging diagnosis and has been described in association with or as a complication of pulmonary tumors, lung surgeries, atrial myxoma, and after radiofrequency catheter ablation for atrial fibrillation. There are not many reported cases of PVT associated with medication use. We present a case of a 53-year-old male with a history of severe persistent asthma on omalizumab, who presented with shortness of breath and was found to have PVT on computed tomography scan of the chest...
July 2017: Journal of Investigative Medicine High Impact Case Reports
https://www.readbyqxmd.com/read/28815120/integrating-temporal-pattern-mining-in-ischemic-stroke-prediction-and-treatment-pathway-discovery-for-atrial-fibrillation
#11
Shijing Guo, Xiang Li, Haifeng Liu, Ping Zhang, Xin Du, Guotong Xie, Fei Wang
Atrial fibrillation (AF) is associated with an increased risk of acute ischemic stroke (AIS). Accurately predicting AIS and planning effective treatment pathways for AIS prevention are crucial for AF patients. Because of the temporality of patients' disease progressions, sequential disease and treatment patterns have the potential to improve risk prediction performance and contribute to effective treatment pathways. This paper integrates temporal pattern mining into the AF study of AIS prediction and treatment pathway discovery...
2017: AMIA Summits on Translational Science Proceedings
https://www.readbyqxmd.com/read/28814943/comparison-of-different-laboratory-tests-in-the-evaluation-of-hemorrhagic-risk-of-patients-using-rivaroxaban-in-the-critical-care-setting-diagnostic-accuracy-study
#12
Marjorie Paris Colombini, Priscilla Bento Matos Cruz Derogis, Valdir Fernandes de Aranda, João Carlos de Campos Guerra, Nelson Hamerschlak, Cristóvão Luis Pitangueiras Mangueira
BACKGROUND: Rivaroxaban is a direct oral anticoagulant designed to dispense with the necessity of laboratory monitoring. However, monitoring rivaroxaban levels is necessary in certain clinical conditions, especially in the critical care setting. METHODS: This is a diagnostic accuracy study evaluating sensitivity and specificity of prothrombin time (PT), activated partial thromboplastin time (aPTT), and Dilute Russell viper venom time (dRVVT), to evaluate the hemorrhagic risk in patients taking rivaroxaban...
2017: Thrombosis Journal
https://www.readbyqxmd.com/read/28814675/retinal-amyloid-pathology-and-proof-of-concept-imaging-trial-in-alzheimer-s-disease
#13
Yosef Koronyo, David Biggs, Ernesto Barron, David S Boyer, Joel A Pearlman, William J Au, Shawn J Kile, Austin Blanco, Dieu-Trang Fuchs, Adeel Ashfaq, Sally Frautschy, Gregory M Cole, Carol A Miller, David R Hinton, Steven R Verdooner, Keith L Black, Maya Koronyo-Hamaoui
BACKGROUND: Noninvasive detection of Alzheimer's disease (AD) with high specificity and sensitivity can greatly facilitate identification of at-risk populations for earlier, more effective intervention. AD patients exhibit a myriad of retinal pathologies, including hallmark amyloid β-protein (Aβ) deposits. METHODS: Burden, distribution, cellular layer, and structure of retinal Aβ plaques were analyzed in flat mounts and cross sections of definite AD patients and controls (n = 37)...
August 17, 2017: JCI Insight
https://www.readbyqxmd.com/read/28814493/what-do-our-patients-think-they-know-about-atrial-fibrillation-%C3%A2-is-that-asking-the-right-question
#14
EDITORIAL
Prashant Dattatraya Bhave
No abstract text is available yet for this article.
August 16, 2017: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/28814457/direct-oral-anticoagulant-vs-vitamin-k-antagonist-related-nontraumatic-intracerebral-hemorrhage
#15
Georgios Tsivgoulis, Vasileios-Arsenios Lioutas, Panayiotis Varelas, Aristeidis H Katsanos, Nitin Goyal, Robert Mikulik, Kristian Barlinn, Christos Krogias, Vijay K Sharma, Konstantinos Vadikolias, Efthymios Dardiotis, Theodore Karapanayiotides, Alexandra Pappa, Christina Zompola, Sokratis Triantafyllou, Odysseas Kargiotis, Michael Ioakeimidis, Sotirios Giannopoulos, Ali Kerro, Argyrios Tsantes, Chandan Mehta, Mathew Jones, Christoph Schroeder, Casey Norton, Anastasios Bonakis, Jason Chang, Anne W Alexandrov, Panayiotis Mitsias, Andrei V Alexandrov
OBJECTIVE: To compare the neuroimaging profile and clinical outcomes among patients with intracerebral hemorrhage (ICH) related to use of vitamin K antagonists (VKAs) or direct oral anticoagulants (DOACs) for nonvalvular atrial fibrillation (NVAF). METHODS: We evaluated consecutive patients with NVAF with nontraumatic, anticoagulant-related ICH admitted at 13 tertiary stroke care centers over a 12-month period. We also performed a systematic review and meta-analysis of eligible observational studies reporting baseline characteristics and outcomes among patients with VKA- or DOAC-related ICH...
August 16, 2017: Neurology
https://www.readbyqxmd.com/read/28814251/the-role-of-radiopharmaceuticals-in-amiodarone-induced-thyroid-pathology
#16
Doina Piciu, Alexandru Irimie
Amiodarone is a di-iodinated benzofuran derivative and is classified as a class III antiarrhythmic agent. It is one of the most powerful and effective antiarrhythmics, being a first-line agent due to its ability to treat ventricular and supraventricular dysrhythmias; since 1960 the drug has become one of the most frequently prescribed antiarrhythmics, despite its potentially serious, side effects. By far, one of the most challenging condition is the thyroid pathology induced by this drug. Each 200 mg tablet of amiodarone contains approximately 75 mg of iodine, 3-10% from each tablet being released as free iodine...
August 16, 2017: Current Radiopharmaceuticals
https://www.readbyqxmd.com/read/28813234/cardiac-mr-strain-a-noninvasive-biomarker-of-fibrofatty-remodeling-of-the-left-atrial-myocardium
#17
Adrian T Huber, Jérôme Lamy, Amer Rahhal, Morgane Evin, Fabrice Atassi, Carine Defrance, Guillaume Lebreton, Karine Clément, Myriam Berthet, Richard Isnard, Pascal Leprince, Philippe Cluzel, Stéphane N Hatem, Nadjia Kachenoura, Alban Redheuil
Purpose To determine whether left atrial (LA) strain quantification with cardiac magnetic resonance (MR) imaging feature tracking is associated with the severity of LA fibrofatty myocardial remodeling at histologic analysis. Materials and Methods This prospective case-control study was approved by the institutional review board. LA strain was evaluated with cardiac MR feature tracking between January 2014 and March 2015 in 13 consecutive patients (mean age, 61 years ± 19; nine male) with mitral regurgitation in the 24 hours before mitral valve surgery and 13 age- and sex-matched healthy control subjects...
August 16, 2017: Radiology
https://www.readbyqxmd.com/read/28813043/folic-acid-supramolecular-ionogels
#18
Rahul Ranjan, Kamla Rawat, H B Bohidar
Herein, we report on folic acid (FA, a low molecular weight gelator) thermoreversible supramolecular organo (in 1 : 1 (v/v) water-DMSO binary solvent), and ionogels made in 1-ethyl-3-methyl imidazolium chloride, [C2mim][Cl], and 1-octyl-3-methyl imidazolium chloride, [C8mim][Cl], solutions with 0.1 ≤ [IL] ≤ 5% (w/v). The self-assembled fibrils of folic acid were largely formed due to secondary forces, such as π-π stacking, H-bonding, and hydrophobic interactions above a gelator concentration of 0...
August 16, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28812984/modelling-the-effects-of-quinidine-disopyramide-and-e-4031-on-short-qt-syndrome-variant-3-in-the-human-ventricles
#19
Cunjin Luo, Kuanquan Wang, Henggui Zhang
Short QT syndrome (SQTS) is an inherited cardiac channelopathy, but at present little information is available on its pharmacological treatment. SQT3 variant (linked to the inward rectifier potassium current IK1) of SQTS, results from a gain-of-function mutation (Kir2.1 D172N) in the KCNJ2-encoded channels, which is associated with ventricular fibrillation (VF). Using biophysically-detailed human ventricular computer models, this study investigated the potential effects of quinidine, disopyramide, and E-4031 on SQT3...
August 16, 2017: Physiological Measurement
https://www.readbyqxmd.com/read/28812917/predictive-role-of-cha2ds2-vasc-score-for-cardiovascular-events-and-death-in-patients-with-arterial-hypertension-and-stable-sinus-rhythm
#20
Carmine Mazzone, Giovanni Cioffi, Cosimo Carriere, Giulia Barbati, Giorgio Faganello, Giulia Russo, Antonella Cherubini, Gianfranco Sinagra, Nadia Zeriali, Andrea Di Lenarda
Background The CHA2DS2-VASc score well stratifies the risk for thromboembolic events in non-valvular atrial fibrillation (NVAF) patients. This score may also predict thromboembolic events in sinus rhythm populations. Purpose The purpose of this study was to assess the prognostic role of CHA2DS2-VASc in a Caucasian community population of patients with arterial hypertension and sinus rhythm. Methods A total of 12,599 arterial hypertension residents not receiving anticoagulation were selected from a community population in Trieste between November 2009 and October 2014: 11,159 sinus rhythm and 1440 NVAF patients...
January 1, 2017: European Journal of Preventive Cardiology
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