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https://www.readbyqxmd.com/read/29349437/staged-endovascular-repair-of-an-abdominal-aortic-aneurysm-adjacent-to-a-chronic-high-flow-iliocaval-traumatic-arteriovenous-fistula
#1
S Keisin Wang, Ashley R Gutwein, Tom Casciani, Michael P Murphy, Gary W Lemmon
Large-vessel chronic traumatic arteriovenous fistulas are a rare complication after trauma. Delayed presentation can consist of one or more features of high-output cardiac failure, pulsatile abdominal mass, bruit, limb ischemia, and venous congestion. We describe a patient with a complex iliocaval fistula secondary to a remote gunshot wound associated with a large 8.5-cm aortic aneurysm. Informed consent of the patient was obtained for publication of the case.
December 2017: Journal of Vascular Surgery Cases and Innovative Techniques
https://www.readbyqxmd.com/read/29343120/an-update-on-the-advancing-high-throughput-screening-techniques-for-patch-clamp-based-ion-channel-screens-implications-for-drug-discovery
#2
Alison Obergrussberger, Tom A Goetze, Nina Brinkwirth, Nadine Becker, Søren Friis, Markus Rapedius, Claudia Haarmann, Ilka Rinke-Weiß, Sonja Stölzle-Feix, Andrea Brüggemann, Michael George, Niels Fertig
Automated patch clamp (APC) devices have become commonplace in many industrial and academic labs. Their ease-of-use and flexibility have ensured that users can perform routine screening experiments and complex kinetic experiments on the same device without the need for months of training and experience. APC devices are being developed to increase throughput and flexibility. Areas covered: Experimental options such as temperature control, internal solution exchange and current clamp have been available on some APC devices for some time, and are being introduced on other devices...
January 17, 2018: Expert Opinion on Drug Discovery
https://www.readbyqxmd.com/read/29342886/a-xylenol-orange-based-screening-assay-for-the-substrate-specificity-of-flavin-dependent-para-phenol-oxidases
#3
Tom A Ewing, Aster van Noord, Caroline E Paul, Willem J H van Berkel
Vanillyl alcohol oxidase (VAO) and eugenol oxidase (EUGO) are flavin-dependent enzymes that catalyse the oxidation of para-substituted phenols. This makes them potentially interesting biocatalysts for the conversion of lignin-derived aromatic monomers to value-added compounds. To facilitate their biocatalytic exploitation, it is important to develop methods by which variants of the enzymes can be rapidly screened for increased activity towards substrates of interest. Here, we present the development of a screening assay for the substrate specificity of para-phenol oxidases based on the detection of hydrogen peroxide using the ferric-xylenol orange complex method...
January 14, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29341429/trans-acting-translational-regulatory-rna-binding-proteins
#4
REVIEW
Robert F Harvey, Tom S Smith, Thomas Mulroney, Rayner M L Queiroz, Mariavittoria Pizzinga, Veronica Dezi, Eneko Villenueva, Manasa Ramakrishna, Kathryn S Lilley, Anne E Willis
The canonical molecular machinery required for global mRNA translation and its control has been well defined, with distinct sets of proteins involved in the processes of translation initiation, elongation and termination. Additionally, noncanonical, trans-acting regulatory RNA-binding proteins (RBPs) are necessary to provide mRNA-specific translation, and these interact with 5' and 3' untranslated regions and coding regions of mRNA to regulate ribosome recruitment and transit. Recently it has also been demonstrated that trans-acting ribosomal proteins direct the translation of specific mRNAs...
January 17, 2018: Wiley Interdisciplinary Reviews. RNA
https://www.readbyqxmd.com/read/29339483/hells-and-cdca7-comprise-a-bipartite-nucleosome-remodeling-complex-defective-in-icf-syndrome
#5
Christopher Jenness, Simona Giunta, Manuel M Müller, Hiroshi Kimura, Tom W Muir, Hironori Funabiki
Mutations in CDCA7, the SNF2 family protein HELLS (LSH), or the DNA methyltransferase DNMT3b cause immunodeficiency-centromeric instability-facial anomalies (ICF) syndrome. While it has been speculated that DNA methylation defects cause this disease, little is known about the molecular function of CDCA7 and its functional relationship to HELLS and DNMT3b. Systematic analysis of how the cell cycle, H3K9 methylation, and the mitotic kinase Aurora B affect proteomic profiles of chromatin in Xenopus egg extracts revealed that HELLS and CDCA7 form a stoichiometric complex on chromatin, in a manner sensitive to Aurora B...
January 16, 2018: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29329922/a-multistate-investigation-of-health-care-associated-burkholderia-cepacia-complex-infections-related-to-liquid-docusate-sodium-contamination-january-october-2016
#6
Janet Glowicz, Matthew Crist, Carolyn Gould, Heather Moulton-Meissner, Judith Noble-Wang, Tom J B de Man, K Allison Perry, Zachary Miller, William C Yang, Stephen Langille, Jessica Ross, Bobbiejean Garcia, Janice Kim, Erin Epson, Stephanie Black, Massimo Pacilli, John J LiPuma, Ryan Fagan
BACKGROUND: Outbreaks of health care-associated infections (HAIs) caused by Burkholderia cepacia complex (Bcc) have been associated with medical devices and water-based products. Water is the most common raw ingredient in nonsterile liquid drugs, and the significance of organisms recovered from microbiologic testing during manufacturing is assessed using a risk-based approach. This incident demonstrates that lapses in manufacturing practices and quality control of nonsterile liquid drugs can have serious unintended consequences...
January 9, 2018: American Journal of Infection Control
https://www.readbyqxmd.com/read/29327710/genome-profiling-is-an-efficient-tool-to-avoid-the-stump-classification-of-uterine-smooth-muscle-lesions-a-comprehensive-array-genomic-hybridization-analysis-of-77-tumors
#7
Sabrina Croce, Agnès Ducoulombier, Agnès Ribeiro, Tom Lesluyes, Jean-Christophe Noel, Frédéric Amant, Louis Guillou, Eberhard Stoeckle, Mojgan Devouassoux-Shisheboran, Nicolas Penel, Anne Floquet, Laurent Arnould, Frédéric Guyon, Florence Mishellany, Camille Chakiba, Tine Cuppens, Michal Zikan, Agnès Leroux, Eric Frouin, Isabelle Farre, Catherine Genestie, Isabelle Valo, Gaëtan MacGrogan, Frédéric Chibon
The diagnosis of a uterine smooth muscle lesion is, in the majority of cases, straightforward. However, in a small number of cases, the morphological criteria used in such lesions cannot differentiate with certainty a benign from a malignant lesion and a diagnosis of smooth muscle tumor with uncertain malignant potential (STUMP) is made. Uterine leiomyosarcomas are often easy to diagnose but it is difficult or even impossible to identify a prognostic factor at the moment of the diagnosis with the exception of the stage...
January 12, 2018: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/29315334/immune-related-genetic-enrichment-in-frontotemporal-dementia-an-analysis-of-genome-wide-association-studies
#8
Iris Broce, Celeste M Karch, Natalie Wen, Chun C Fan, Yunpeng Wang, Chin Hong Tan, Naomi Kouri, Owen A Ross, Günter U Höglinger, Ulrich Muller, John Hardy, Parastoo Momeni, Christopher P Hess, William P Dillon, Zachary A Miller, Luke W Bonham, Gil D Rabinovici, Howard J Rosen, Gerard D Schellenberg, Andre Franke, Tom H Karlsen, Jan H Veldink, Raffaele Ferrari, Jennifer S Yokoyama, Bruce L Miller, Ole A Andreassen, Anders M Dale, Rahul S Desikan, Leo P Sugrue
BACKGROUND: Converging evidence suggests that immune-mediated dysfunction plays an important role in the pathogenesis of frontotemporal dementia (FTD). Although genetic studies have shown that immune-associated loci are associated with increased FTD risk, a systematic investigation of genetic overlap between immune-mediated diseases and the spectrum of FTD-related disorders has not been performed. METHODS AND FINDINGS: Using large genome-wide association studies (GWASs) (total n = 192,886 cases and controls) and recently developed tools to quantify genetic overlap/pleiotropy, we systematically identified single nucleotide polymorphisms (SNPs) jointly associated with FTD-related disorders-namely, FTD, corticobasal degeneration (CBD), progressive supranuclear palsy (PSP), and amyotrophic lateral sclerosis (ALS)-and 1 or more immune-mediated diseases including Crohn disease, ulcerative colitis (UC), rheumatoid arthritis (RA), type 1 diabetes (T1D), celiac disease (CeD), and psoriasis...
January 2018: PLoS Medicine
https://www.readbyqxmd.com/read/29314081/predictors-and-outcomes-of-patients-requiring-repeat-transvenous-lead-extraction-of-pacemaker-and-defibrillator-leads
#9
Simon Claridge, Jonathan Johnson, Gazi Sadnan, Jonathan M Behar, Bradley Porter, Benjamin Sieniewicz, Tom Jackson, Jessica Webb, Justin Gould, Manav Sohal, Shoaib Hamid, Nik Patel, Jaswinder Gill, Christopher A Rinaldi
BACKGROUND: A proportion of patients who undergo an initial lead extraction procedure will require a second, repeat extraction. Data regarding this clinical entity are scarce and neither the predisposing risk factors for, nor outcomes from these procedures have been described previously. We sought to determine the incidence, risk factors and outcomes of repeat lead extraction. METHODS: A database of extraction procedures from 2001-2015 was analyzed. Repeat extraction procedures were identified and the indication for extraction was dichotomized into infection and lead related problems...
January 5, 2018: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/29311143/neural-integration-of-stimulus-history-underlies-prediction-for-naturalistically-evolving-sequences
#10
Brian Maniscalco, Jennifer L Lee, Patrice Abry, Amy Lin, Tom Holroyd, Biyu J He
Forming valid predictions about the environment is crucial to survival. However, whether humans are able to form valid predictions about natural stimuli based on their temporal statistical regularities remains unknown. Here we presented subjects with tone sequences whose pitch fluctuation over time capture long-range temporal dependence structures prevalent in natural stimuli. We found that subjects were able to exploit such naturalistic statistical regularities to make valid predictions about upcoming items in a sequence...
January 8, 2018: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/29303550/electric-field-guided-precision-manipulation-of-catalytic-nanomotors-for-cargo-delivery-and-powering-nanoelectromechanical-devices
#11
Jianhe Guo, Jeremie June Gallegos, Ashley Robyn Tom, Donglei Fan
We report a controllable and precision approach in manipulating catalytic nanomotors by strategically applied electric (E-) fields in three dimensions (3-D). With the high controllability, the catalytic nanomotors have demonstrated versatility in capturing, delivering, and releasing of cargos to designated locations as well as in-situ integration with nanomechanical devices (NEMS) to chemically power the actuation. With combined AC and DC E-fields, catalytic nanomotors can be accurately aligned by the AC E-fields and effectively change their speeds instantly by the DC E-fields...
January 5, 2018: ACS Nano
https://www.readbyqxmd.com/read/29296720/x-ray-crystal-structure-of-plasmin-with-tranexamic-acid-derived-active-site-inhibitors
#12
Ruby H P Law, Guojie Wu, Eleanor W W Leung, Koushi Hidaka, Adam J Quek, Tom T Caradoc-Davies, Devadharshini Jeevarajah, Paul J Conroy, Nigel M Kirby, Raymond S Norton, Yuko Tsuda, James C Whisstock
The zymogen protease plasminogen and its active form plasmin perform key roles in blood clot dissolution, tissue remodeling, cell migration, and bacterial pathogenesis. Dysregulation of the plasminogen/plasmin system results in life-threatening hemorrhagic disorders or thrombotic vascular occlusion. Accordingly, inhibitors of this system are clinically important. Currently, tranexamic acid (TXA), a molecule that prevents plasminogen activation through blocking recruitment to target substrates, is the most widely used inhibitor for the plasminogen/plasmin system in therapeutics...
May 9, 2017: Blood Advances
https://www.readbyqxmd.com/read/29289002/pesticide-load-dynamics-during-stormwater-flow-events-in-mediterranean-coastal-streams-alexander-stream-case-study
#13
Tom Topaz, Roey Egozi, Gil Eshel, Benny Chefetz
Cultivated land is a major source of pesticides, which are transported with the runoff water and eroded soil during rainfall events and pollute riverine and estuarine environments. Common ecotoxicological assessments of riverine systems are mainly based on water sampling and analysis of only the dissolved phase, and address a single pesticide's toxicological impact under laboratory conditions. A clear overview of mixtures of pesticides in the adsorbed and dissolved phases is missing, and therefore the full ecotoxicological impact is not fully addressed...
December 27, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29280214/thorough-in-silico-and-in-vitro-cdna-analysis-of-21-putative-brca1-and-brca2-splice-variants-and-a-complex-tandem-duplication-in-brca2-allowing-the-identification-of-activated-cryptic-splice-donor-sites-in-brca2-exon-11
#14
Annelot Baert, Eva Machackova, Ilse Coene, Carol Cremin, Kristin Turner, Cheryl Portigal-Todd, Marie Jill Asrat, Jennifer Nuk, Allison Mindlin, Young Sean, Andree MacMillan, Tom Van Maerken, Martin Trbusek, Wendy McKinnon, Marie E Wood, William D Foulkes, Marta Santamariña, Miguel de la Hoya, Lenka Foretova, Bruce Poppe, Anne Vral, Toon Rosseel, Kim De Leeneer, Ana Vega, Kathleen B M Claes
For 21 putative BRCA1 and BRCA2 splice site variants the concordance between mRNA analysis and predictions by in silico programs was evaluated. Aberrant splicing was confirmed for 12 alterations. In silico prediction tools were helpful to determine for which variants cDNA analysis is warranted, however, predictions for variants in the Cartegni consensus region but outside the canonical sites, were less reliable. Learning algorithms like Adaboost and Random Forest outperformed the classical tools. Further validations are warranted prior to implement these novel tools in clinical settings...
December 27, 2017: Human Mutation
https://www.readbyqxmd.com/read/29259996/phenotypic-and-functional-complexity-of-brain-infiltrating-t-cells-in-rasmussen-encephalitis
#15
Faiez Al Nimer, Ivan Jelcic, Christian Kempf, Tom Pieper, Herbert Budka, Mireia Sospedra, Roland Martin
Objective: To characterize the brain-infiltrating immune cell repertoire in Rasmussen encephalitis (RE) with special focus on the subsets, clonality, and their cytokine profile. Methods: The immune cell infiltrate of freshly isolated brain tissue from RE was phenotypically and functionally characterized using immunohistology, flow cytometry, and T-cell receptor (TCR) deep sequencing. Identification of clonally expanded T-cell clones (TCCs) was achieved by combining flow cytometry sorting of CD4+ and CD8+ T cells and high-throughput TCR Vβ-chain sequencing...
January 2018: Neurology® Neuroimmunology & Neuroinflammation
https://www.readbyqxmd.com/read/29258600/towards-a-more-effective-and-efficient-governance-and-regulation-of-nanomaterials
#16
Tom Van Teunenbroek, James Baker, Aart Dijkzeul
The uncertainty regarding the effects and risks of nanomaterials on human health and the environment, and how they should be tested and assessed in the context of current regulations, is clearly holding back the full exploitation of the innovative potential of nanomaterials. To reduce this uncertainty, the European Union funded NANoREG and ProSafe projects (jointly referred to as N1P) have made a critical evaluation of methods to test and assess these risks in the context of the current registration, evaluation, authorisation and restriction of chemicals (REACH) regulation...
December 19, 2017: Particle and Fibre Toxicology
https://www.readbyqxmd.com/read/29244502/half-sandwich-complexes-of-an-extremely-electron-donating-redox-active-%C3%AE-6-diborabenzene-ligand
#17
Julian Böhnke, Holger Braunschweig, J Oscar C Jiménez-Halla, Ivo Krummenacher, Tom E Stennett
The heteroarene 1,4-bis(CAAC)-1,4-diborabenzene (1; CAAC = cyclic (alkyl)(amino)carbene) reacts with [(MeCN)3M(CO)3] (M = Cr, Mo, W) to yield half-sandwich complexes of the form [(η6-diborabenzene)M(CO)3] (M = Cr (2), Mo (3), W (4)). Investigation of the new complexes with a combination of X-ray diffraction, spectroscopic methods and DFT calculations shows that ligand 1 is a remarkably strong electron donor. In particular, [(η6-arene)M(CO)3] complexes of this ligand display the lowest CO stretching frequencies yet observed for this class of complex...
December 15, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/29241011/silver-free-palladium-catalyzed-c-sp3-h-arylation-of-saturated-bicyclic-amine-scaffolds
#18
Charlotte E Coomber, Laure Benhamou, Dejan-Krešimir Bučar, Peter D Smith, Michael J Porter, Tom David Sheppard
Herein we report a silver-free Pd(II)-catalyzed C(sp3)-H arylation of saturated bicyclic and tricyclic amine scaffolds. The reaction provides good yields using a range of aryl iodides and aryl bromides including functionalized examples bearing aldehydes, ketones, esters, free phenols and heterocycles. The methodology has been applied to medicinally relevant scaffolds. Two of the intermediate palladium complexes in the catalytic cycle have been prepared and characterized, and a mechanism proposed. Removal of the directing group proceeded with good yield under relatively mild conditions...
December 14, 2017: Journal of Organic Chemistry
https://www.readbyqxmd.com/read/29240962/long-term-outcomes-after-percutaneous-revascularization-of-complex-coronary-bifurcation-lesions-using-a-dedicated-self-expanding-biolimus-eluting-stent-system
#19
Andreas S Triantafyllis, Johan Bennett, Efstathios Pagourelias, Keir McCutcheon, Tom Adriaenssens, Peter R Sinnaeve, Walter Desmet, Christophe Dubois
BACKGROUND: To evaluate long-term clinical outcomes after treatment of complex bifurcation lesions with the AXXESS dedicated self-expanding biolimus A9-eluting bifurcation stent. METHODS: Between 2004 and 2013, 123 patients with complex bifurcation lesions were treated in a single center with the AXXESS stent in the proximal main vessel (MV) and additional drug-eluting stents in branches when required. Median follow-up was 5 years. Primary endpoint was the rate of major adverse cardiac events (MACE)...
December 14, 2017: Cardiology Journal
https://www.readbyqxmd.com/read/29234009/childhood-behaviour-problems-show-the-greatest-gap-between-dna-based-and-twin-heritability
#20
Rosa Cheesman, Saskia Selzam, Angelica Ronald, Philip S Dale, Tom A McAdams, Thalia C Eley, Robert Plomin
For most complex traits, DNA-based heritability ('SNP heritability') is roughly half that of twin-based heritability. A previous report from the Twins Early Development Study suggested that this heritability gap is much greater for childhood behaviour problems than for other domains. If true, this finding is important because SNP heritability, not twin heritability, is the ceiling for genome-wide association studies. With twice the sample size as the previous report, we estimated SNP heritabilities (N up to 4653 unrelated individuals) and compared them with twin heritabilities from the same sample (N up to 4724 twin pairs) for diverse domains of childhood behaviour problems as rated by parents, teachers, and children themselves at ages 12 and 16...
December 12, 2017: Translational Psychiatry
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