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https://www.readbyqxmd.com/read/29136561/calibrated-automated-thrombogram-values-in-infants-with-cardiac-surgery-before-and-after-cardiopulmonary-bypass
#1
Alessandra Rizza, Giovina Di Felice, Rosa Luciano, Ottavia Porzio, Ombretta Panizzon, Maurizio Muraca, Paola Cogo
INTRODUCTION: Impaired thrombin generation has been associated to increase bleeding after cardiac surgery with cardiopulmonary bypass (CPB), especially in children. The aim of this study was to evaluate standard coagulation assay, thrombin generation by calibrated automated thrombogram (CAT), thromboelastography (TEG) and procoagulant phospholipids (PPL) activity in infants undergoing cardiac surgery with CPB. MATERIALS AND METHODS: Prospective observational study performed in children aged <24months undergoing cardiac surgery with CPB...
September 21, 2017: Thrombosis Research
https://www.readbyqxmd.com/read/29113700/high-performance-dental-resin-composites-with-hydrolytically-stable-monomers
#2
Xiaohong Wang, George Huyang, Sri Vikram Palagummi, Xiaohui Liu, Drago Skrtic, Carlos Beauchamp, Rafael Bowen, Jirun Sun
OBJECTIVE: The objectives of this project were to: 1) develop strong and durable dental resin composites by employing new monomers that are hydrolytically stable, and 2) demonstrate that resin composites based on these monomers perform superiorly to the traditional bisphenol A glycidyl dimethacrylate/triethylene glycol dimethacrylate (Bis-GMA/TEGDMA) composites under testing conditions relevant to clinical applications. METHODS: New resins comprising hydrolytically stable, ether-based monomer, i...
November 4, 2017: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/29112094/thrombelastography-early-amplitudes-in-bleeding-and-coagulopathic-trauma-patients-results-from-a-multicenter-study
#3
Thomas H Laursen, Martin A S Meyer, Anna Sina P Meyer, Tina Gaarder, Paal A Naess, Jakob Stensballe, Sisse R Ostrowski, Pär I Johansson
BACKGROUND: Early amplitudes in the viscoelastic hemostatic assays Thrombelastography (TEG) and Rotation Thromboelastometry (ROTEM) provide fast results, which is critical in resuscitation of bleeding patients. This study investigated associations between TEG early amplitudes and standard TEG variables in a large multicenter cohort of moderately to severely injured trauma patients admitted at three North European level 1 Trauma Centers. METHODS: Prospective observational study of 404 trauma patients with clinical suspicion of severe injury from London, UK, Copenhagen, Denmark and Oslo, Norway...
November 3, 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/29081908/utility-and-correlation-of-known-anticoagulation-parameters-in-the-management-of-pediatric-ventricular-assist-devices
#4
Ajay K Bhatia, Mouhammad Yabrodi, Mallory Carroll, Silvia Bunting, Kirk Kanter, Kevin O Maher, Shriprasad R Deshpande
AIM: To assess utility and correlation of known anticoagulation parameters in the management of pediatric ventricular assist device (VAD). METHODS: Retrospective study of pediatric patients supported with a Berlin EXCOR VAD at a single pediatric tertiary care center during a single year. RESULTS: We demonstrated associations between activated thromboplastin time (aPTT) and R-thromboelastography (R-TEG) values (rs = 0.65, P < 0.001) and between anti-Xa assay and R-TEG values (rs = 0...
September 26, 2017: World Journal of Cardiology
https://www.readbyqxmd.com/read/29078874/14-day-thawed-plasma-retains-clot-enhancing-properties-and-inhibits-tpa-induced-fibrinolysis
#5
Benjamin R Huebner, Ernest E Moore, Hunter B Moore, Raymond Shepherd-Singh, Angela Sauaia, Gregory R Stettler, Geoffrey R Nunns, Christopher C Silliman
BACKGROUND: Plasma-first resuscitation attenuates trauma-induced coagulopathy (TIC); however, the logistics of plasma-first resuscitation require thawed plasma (TP) be readily available due to the obligatory thawing time of fresh frozen plasma (FFP). The current standard is storage of TP for up to 5 days at 4°C, based on factor levels at outdate, for use in patients at risk for TIC, but there remains a 2.2% outdated wastage rate. However, the multitude of plasma proteins in attenuating TIC remains unknown...
November 2017: Journal of Surgical Research
https://www.readbyqxmd.com/read/29070132/-a-systematic-review-of-the-value-of-thrombelastography-or-thromboelastometry-for-prediction-of-venous-thromboembolism
#6
Zhi-Yun Jiang, Jun-Fen Ma, Qian Wang, Fan Wu, Jie-Dan Ping, Liang Ming
OBJECTIVE: To systematically collect the thrombelastography (TEG)-or thromboelastometry (ROTEM)-related data, and predict to evaluate their values for the prediction of thromboembolic events. METHODS: Databases including PubMed, Central and Embase were searched for the related clinical trials, and the references were retrieved manually; these included references were assessed qualitatively by the QUADAS-2 tool; finally the enrolled researches were qualitatively analyzed...
October 2017: Zhongguo Shi Yan Xue Ye Xue za Zhi
https://www.readbyqxmd.com/read/29064069/new-genus-and-species-of-the-extinct-aphid-family-szelegiewicziidae-and-their-implications-for-aphid-evolution
#7
Piotr Wegierek, Dagmara Żyła, Agnieszka Homan, Chenyang Cai, Diying Huang
Recently, we are witnessing an increased appreciation for the importance of the fossil record in phylogenetics and testing various evolutionary hypotheses. However, this approach brings many challenges, especially for such a complex group as aphids and requires a thorough morphological analysis of the extinct groups. The extinct aphid family Szelegiewicziidae is supposed to be one of the oviparous lineages in aphid evolution. New material from the rock fossil deposits of Shar Teg (Upper Jurassic of Mongolia), Baissa (Lower Cretaceous of Siberia-Russia), and Burmese amber (Upper Cretaceous of Myanmar) allowed us to undertake a more detailed examination of the morphological features and carry out an analysis of the taxonomical composition and evolution of the family...
October 24, 2017: Die Naturwissenschaften
https://www.readbyqxmd.com/read/29059018/evaluation-of-thromboelastography-in-bitches-with-pyometra
#8
Tovah I Dorsey, Elizabeth A Rozanski, Claire R Sharp, Jonathan M Babyak, Armelle M de Laforcade
We investigated the effect of pyometra on kaolin-activated thromboelastography (TEG). Eighteen client-owned dogs with pyometra and 8 healthy spayed dogs were recruited. TEG parameters and packed cell volume were determined. Results from spayed females and from intact females with pyometra were compared using a Student t-test and Wilcoxon rank sum test. Bitches with pyometra were hypercoagulable compared to spayed bitches as evidenced by elevated maximum amplitude, G, and alpha angle. There were no significant group differences in R time, K time, or clot lysis at 30 or 60 min...
October 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/29050713/is-preoperative-fibrinogen-testing-associated-with-total-blood-loss-in-adolescent-idiopathic-scoliosis-correction
#9
Matthew J Geck, Devender Singh, Holly Gunn, John K Stokes, Eeric Truumees
STUDY DESIGN: Retrospective analysis. OBJECTIVE: This study sought to investigate the potential association between preoperative fibrinogen, bleeding, and transfusion requirements in adolescent idiopathic scoliosis (AIS) corrections. SUMMARY OF BACKGROUND DATA: Blood loss after major spinal reconstruction increases the risks and costs of surgery. Preoperative fibrinogen levels may predict intra- and postoperative blood loss. METHODS: Data were collected from clinic charts and hospital medical records of all 110 of a single surgeon's consecutive AIS patients undergoing greater than three-level deformity correction surgeries from January 2011 to December 2013...
November 2017: Spine Deformity
https://www.readbyqxmd.com/read/29049137/effects-of-dextran-70-and-albumin-on-coagulation-in-experimental-hemorrhage-in-the-guinea-pig
#10
Ulf Schött, Thomas Kander, Peter Bentzer
BACKGROUND: Dextran-70 is a more potent plasma volume expander than albumin but use has been hampered because of it's antithrombotic properties. However, also albumin has antithrombotic properties and little is known about relative effects of these two colloids on coagulation in-vivo when controlling for differences in efficacy as plasma volume expanders. AIM: Compare effects of dextran-70 and albumin on coagulation at a dose resulting in equal plasma volume expansion...
October 18, 2017: Shock
https://www.readbyqxmd.com/read/29048375/construction-of-a-bivalent-thrombin-binding-aptamer-and-its-antidote-with-improved-properties
#11
Quintin W Hughes, Bao T Le, Grace Gilmore, Ross I Baker, Rakesh N Veedu
Aptamers are short synthetic DNA or RNA oligonucleotides that adopt secondary and tertiary conformations based on Watson-Crick base-pairing interactions and can be used to target a range of different molecules. Two aptamers, HD1 and HD22, that bind to exosites I and II of the human thrombin molecule, respectively, have been extensively studied due to their anticoagulant potentials. However, a fundamental issue preventing the clinical translation of many aptamers is degradation by nucleases and reduced pharmacokinetic properties requiring higher dosing regimens more often...
October 19, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29045759/the-effect-of-hydroxychloroquine-on-haemostasis-complement-inflammation-and-angiogenesis-in-patients-with-antiphospholipid-antibodies
#12
Karen Schreiber, Karen Breen, Kiran Parmar, Jacob H Rand, Xiao-Xuan Wu, Beverley J Hunt
Objectives: HCQ has been described as having a beneficial effect in patients with APS but its mechanism of action is unclear. We hypothesized that HCQ may have effects on subnormal angiogenesis, inflammation and haemostatic biomarkers seen in APS. The aim of our study was to assess laboratory markers [annexin A5 (AnxA5) anticoagulant activity, tissue factor (TF) levels, thromboelastography (TEG), CRP, Bb, C3a and VEGF] in HCQ-naïve patients with aPL at baseline and after commencing HCQ...
October 17, 2017: Rheumatology
https://www.readbyqxmd.com/read/28978138/il-33-blockade-suppresses-tumor-growth-of-human-lung-cancer-through-direct-and-indirect-pathways-in-a-preclinical-model
#13
Kailing Wang, Shan Shan, Zongjun Yang, Xia Gu, Yuanyuan Wang, Chunhong Wang, Tao Ren
Non-small-cell lung cancer (NSCLC) is the most common type in lung cancer, a leading cause of cancer-related death worldwide. Our previous study unraveled a pro-cancer function of IL-33 in fueling outgrowth and metastasis of human NSCLC cells. Herein, we determined that interfere with IL-33 activity was an effective strategy for limiting NSCLC tumor growth using a preclinical model with human NSCLC xenografts. IL-33 blockade efficiently inhibited tumor growth of NSCLC xenografts in immune-deficient mice. Mechanistically, IL-33 blockade suppressed outgrowth capacity of human NSCLC cells...
September 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28969894/targeting-resuscitation-to-normalization-of-coagulating-status-hyper-and-hypocoagulability-after-severe-injury-are-both-associated-with-increased-mortality
#14
Hunter B Moore, Ernest E Moore, Ioannis N Liras, Charles Wade, Benjamin R Huebner, Clay Cothren Burlew, Fredric M Pieracci, Angela Sauaia, Bryan A Cotton
INTRODUCTION: The prevalence and impact of hypercoagulability (hypo) in severely injured patients early after injury remains unclear. We hypothesize that the predominant phenotype of postinjury coagulopathy is hypercoagulability (hyper) and it is associated with increased mortality. MATERIAL AND METHODS: Blood samples from 141 healthy volunteers assayed with thrombelastography (TEG) were used to identify thresholds of hypo and hypercoagulability (above 95th/below the 5(th)percentile) in four TEG indices...
September 18, 2017: American Journal of Surgery
https://www.readbyqxmd.com/read/28969064/thrombin-induced-platelet-fibrin-clot-strength-in-relation-to-platelet-volume-indices-and-inflammatory-markers-in-patients-with-coronary-artery-disease
#15
Hai-Chen Lv, Hong-Yi Wu, Jia-Sheng Yin, Jun-Bo Ge
Platelet aggregation and inflammation are both implicated in coronary artery disease (CAD). Thrombin induced platelet-fibrin clot strength (MAThrombin) measured by thrombelastography (TEG) has been proved to be a novel marker of platelet aggregation. The aim of this study was to investigate the correlation of MAThrombin to platelet volume indices (PVIs) or to inflammatory markers in different types of CAD. 206 patients with different types of CAD were enrolled. MAThrombin, PVIs, including mean platelet volume (MPV), platelet distribution width (PDW), and platelet-large cell ratio (P-LCR) as well as inflammatory markers, including high-sensitivity C-reactive protein (hs-CRP) and fibrinogen (Fbg) were measured...
September 8, 2017: Oncotarget
https://www.readbyqxmd.com/read/28968503/hexagonal-molecular-tiling-by-hexagonal-macrocycles-at-the-liquid-solid-interface-structural-effects-on-packing-geometry
#16
Kohei Iritani, Motoki Ikeda, Anna Yang, Kazukuni Tahara, Keiji Hirose, Jeffrey S Moore, Yoshito Tobe
We present here hexagonal tiling using hexagonal phenylene-ethynylene and phenylene-butadiynylene macrocycles attached by alkyl ester groups, PEM-C6 and PBM-C8, respectively, or triethylene glycol ester groups, PEM-TEG and PBM-TEG, respectively, at each vertex of the macrocyclic periphery at the liquid/solid interface. In this study, we focused on the effects of macrocyclic core size and the chemical properties of side chains attached to macrocyclic cores as well as solute concentrations on the hexagonal geometry of self-assembled monolayers...
October 16, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28964993/elucidation-of-one-step-synthesis-of-pegylated-cufe-bimetallic-nanoparticles-antimicrobial-activity-of-cufe-peg-vs-cu-peg
#17
O Antonoglou, K Giannousi, J Arvanitidis, S Mourdikoudis, A Pantazaki, C Dendrinou-Samara
There is a growing field of research on the physicochemical properties of bimetallic nanoparticles (BMNPs) and their potential use in different applications. Meanwhile, their antimicrobial activity is scarcely reported, although BMNPs can potentially achieve unique chemical transformations and synergetic effects can be presented. Towards this direction a reproducible simple hybrid polyol process under moderate temperature solvothermal conditions has been applied for the isolation of non-oxide contaminated bimetallic CuFe nanoparticles (NPs)...
September 23, 2017: Journal of Inorganic Biochemistry
https://www.readbyqxmd.com/read/28954432/energy-neutral-wireless-bolt-for-safety-critical-fastening
#18
Biruk B Seyoum, Maurizio Rossi, Davide Brunelli
Thermoelectric generators (TEGs) are now capable of powering the abundant low power electronics from very small (just a few degrees Celsius) temperature gradients. This factor along with the continuously lowering cost and size of TEGs, has contributed to the growing number of miniaturized battery-free sensor modules powered by TEGs. In this article, we present the design of an ambient-powered wireless bolt for high-end electro-mechanical systems. The bolt is equipped with a temperature sensor and a low power RF chip powered from a TEG...
September 26, 2017: Sensors
https://www.readbyqxmd.com/read/28937170/photochemistry-and-aggregation-behavior-of-triethylene-glycol-teg-terminated-stilbene-dendrimers
#19
Hiroya Sakurai, Takashi Maruyama, Tatsuo Arai
The photochemical properties of stilbene cored amphiphilic dendrimers (G0-G3) in THF and water were investigated. The solvation dynamics in water depended on the generation, while the behavior is almost the same in THF. Dendrimers G1 and G2 form molecular assemblies and undergo photodimerization reaction in addition to photoisomerization. G3 has enough TEG groups on the surface to cover the hydrophobic moiety within a single molecule. These dendrimers have free space around the core to undergo mutual isomerization even in water...
October 11, 2017: Photochemical & Photobiological Sciences
https://www.readbyqxmd.com/read/28931362/dual-antiplatelet-therapy-is-associated-with-coagulopathy-detectable-by-thrombelastography-in-acute-stroke
#20
Mark M McDonald, Tareq S Almaghrabi, Daniel M Saenz, Chunyan Cai, Mohammad H Rahbar, H Alex Choi, Kiwon Lee, James C Grotta, Tiffany R Chang
BACKGROUND: Thrombelastography (TEG) provides a global, dynamic measure of coagulation. We examined the effect of antiplatelet (AP) medications on coagulation in patients with acute stroke as measured by TEG. METHODS: We reviewed prospectively collected data on patients presenting with acute ischemic stroke (AIS) and spontaneous intracerebral hemorrhage (ICH) between 2009 and 2014. Patient demographics and baseline TEG values were compared among 4 different drug use groups: aspirin only, clopidogrel only, both aspirin and clopidogrel, and no AP...
January 1, 2017: Journal of Intensive Care Medicine
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