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https://www.readbyqxmd.com/read/27915440/liver-steatosis-in-pre-transplant-liver-biopsies-can-be-quantified-rapidly-and-accurately-by-nuclear-magnetic-resonance-analysis
#1
Stefanie Bertram, Cathrin Myland, Sandra Swoboda, Anja Gallinat, Thomas Minor, Nils Lehmann, Michael Thie, Julia Kälsch, Leona Pott, Ali Canbay, Thomas Bajanowski, Henning Reis, Andreas Paul, Hideo A Baba
Donor livers marginally acceptable or acceptable according to extended criteria are more frequently transplanted due to the growing discrepancy between demand and availability of donor organs. One type of marginally acceptable graft is a steatotic donor liver, because it is more sensitive to ischemia-reperfusion injury. Thus, quantitative assessment of steatosis is crucial prior to liver transplantation. Extent of steatosis of 49 pre-reperfusion liver biopsies from patients who received orthotopic liver transplantation was assessed by three techniques: semi-quantitative histological evaluation, computerized histomorphometry, and NMR-based estimation of fat content...
December 3, 2016: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/27913513/minimal-residual-disease-in-mantle-cell-lymphoma-insights-into-biology-and-impact-on-treatment
#2
Eva Hoster, Christiane Pott
Despite the recent substantial improvement of clinical outcome in mantle cell lymphoma (MCL), resistance to immunochemotherapy and common relapses are challenges for long-term tumor control. The assessment of minimal residual disease (MRD) by real-time quantitative polymerase chain reaction has emerged as a widely feasible and standardized tool for direct assessment of therapy-induced reduction of tumor burden and regrowth after cytotoxic treatment in MCL, with much improved sensitivity compared with conventional staging procedures...
December 2, 2016: Hematology—the Education Program of the American Society of Hematology
https://www.readbyqxmd.com/read/27899590/different%C3%A2-enhancer-classes-in-drosophila-bind-distinct-architectural-proteins-and-mediate-unique-chromatin-interactions-and-3d-architecture
#3
Caelin Cubeñas-Potts, M Jordan Rowley, Xiaowen Lyu, Ge Li, Elissa P Lei, Victor G Corces
Eukaryotic gene expression is regulated by enhancer-promoter interactions but the molecular mechanisms that govern specificity have remained elusive. Genome-wide studies utilizing STARR-seq identified two enhancer classes in Drosophila that interact with different core promoters: housekeeping enhancers (hkCP) and developmental enhancers (dCP). We hypothesized that the two enhancer classes are occupied by distinct architectural proteins, affecting their enhancer-promoter contacts. By evaluating ChIP-seq occupancy of architectural proteins, typical enhancer-associated proteins, and histone modifications, we determine that both enhancer classes are enriched for RNA Polymerase II, CBP, and architectural proteins but there are also distinctions...
November 28, 2016: Nucleic Acids Research
https://www.readbyqxmd.com/read/27894123/safeguarding-pollinators-and-their-values-to-human-well-being
#4
Simon G Potts, Vera Imperatriz-Fonseca, Hien T Ngo, Marcelo A Aizen, Jacobus C Biesmeijer, Thomas D Breeze, Lynn V Dicks, Lucas A Garibaldi, Rosemary Hill, Josef Settele, Adam J Vanbergen
Wild and managed pollinators provide a wide range of benefits to society in terms of contributions to food security, farmer and beekeeper livelihoods, social and cultural values, as well as the maintenance of wider biodiversity and ecosystem stability. Pollinators face numerous threats, including changes in land-use and management intensity, climate change, pesticides and genetically modified crops, pollinator management and pathogens, and invasive alien species. There are well-documented declines in some wild and managed pollinators in several regions of the world...
November 28, 2016: Nature
https://www.readbyqxmd.com/read/27892808/self-reported-impulsivity-in-huntington-s-disease-patients-and-relationship-to-executive-dysfunction-and-reward-responsiveness
#5
Patricia L Johnson, Geoffrey F Potts, Juan Sanchez-Ramos, Cynthia R Cimino
INTRODUCTION: Few studies have directly investigated impulsivity in Huntington's disease (HD) despite known changes in dopaminergic and frontal functioning, changes that have been associated with impulsivity in other disorders and in the normal population. This study sought to further categorize impulsivity in HD through examining differences in self-reported impulsivity between community controls and HD patients, the relationship between executive dysfunction and impulsivity, and the relationship of a reward/punishment behavioral inhibition task in relation to these self-report measures...
November 28, 2016: Journal of Clinical and Experimental Neuropsychology
https://www.readbyqxmd.com/read/27890897/pott-s-puffy-tumor-in-an-adult-a-case-report-and-review-of-literature
#6
Satomi Tatsumi, Min Ri, Naoyuki Higashi, Nozomu Wakayama, Shoji Matsune, Mamiko Tosa
Pott's puffy tumor is a subperiosteal abscess of the frontal bone with osteomyelitis which has become rare because of the widespread use of antibiotics. Here, we report a case of Pott's puffy tumor in a 46-year-old man who visited the department of dermatology with painful swelling of the forehead. Despite open drainage and oral antibiotic therapy, the symptoms recurred twice in the following month. Computed tomography revealed a fistula of frontal bone. The eventual diagnosis was Pott's puffy tumor. The patient underwent endoscopic surgery at the department of otorhinolaryngology and achieved a complete recovery...
2016: Journal of Nippon Medical School, Nippon Ika Daigaku Zasshi
https://www.readbyqxmd.com/read/27886812/foraging-potential-of-underground-storage-organ-plants-in-the-southern-cape-south-africa
#7
Elzanne Singels, Alastair J Potts, Richard M Cowling, Curtis W Marean, Jan De Vynck, Karen J Esler
Underground storage organs (USOs) serve as a staple source of carbohydrates for many hunter-gatherer societies and they feature prominently in discussions of diets of early modern humans. While the way of life of hunter-gatherers in South Africa's Cape no longer exists, there is extensive ethnographic, historical, and archaeological evidence of hunter-gatherers' use of USOs. This is to be expected, given that the Cape supports the largest concentration of plant species with USOs globally. The southern Cape is the location of several Middle Stone Age sites that are highly significant to research on the origins of behaviourally modern humans, and this provided the context for our research...
December 2016: Journal of Human Evolution
https://www.readbyqxmd.com/read/27886273/improving-landscape-inference-by-integrating-heterogeneous-data-in-the-inverse-ising-problem
#8
Pierre Barrat-Charlaix, Matteo Figliuzzi, Martin Weigt
The inverse Ising problem and its generalizations to Potts and continuous spin models have recently attracted much attention thanks to their successful applications in the statistical modeling of biological data. In the standard setting, the parameters of an Ising model (couplings and fields) are inferred using a sample of equilibrium configurations drawn from the Boltzmann distribution. However, in the context of biological applications, quantitative information for a limited number of microscopic spins configurations has recently become available...
November 25, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27884996/ten-policies-for-pollinators
#9
Lynn V Dicks, Blandina Viana, Riccardo Bommarco, Berry Brosi, María Del Coro Arizmendi, Saul A Cunningham, Leonardo Galetto, Rosemary Hill, Ariadna V Lopes, Carmen Pires, Hisatomo Taki, Simon G Potts
No abstract text is available yet for this article.
November 25, 2016: Science
https://www.readbyqxmd.com/read/27881800/genetic-stability-of-physiological-responses-to-defoliation-in-a-eucalypt-and-altered-chemical-defence-in-regrowth-foliage
#10
Christina L Borzak, Brad M Potts, Karen M Barry, Elizabeth A Pinkard, Julianne M O'Reilly-Wapstra
Defoliation may initiate physiological recovery and chemical defence mechanisms that allow a plant to improve fitness after damage. Such responses may result in changes in plant resource allocation that influence growth and foliar chemistry. In this study, we investigated the nature and stability of the defoliation response of juvenile plants from three divergent populations of Eucalyptus globulus Labill. A partial defoliation treatment that removed all upper crown leaves and the apical buds was applied to plants sourced from eight families from each of three populations representing contrasting chemical resistance to mammalian herbivory...
November 22, 2016: Tree Physiology
https://www.readbyqxmd.com/read/27875737/experimental-evidence-for-a-severe-proarrhythmic-potential-of-levosimendan
#11
Gerrit Frommeyer, Anja Kohnke, Christian Ellermann, Dirk G Dechering, Simon Kochhäuser, Christian Pott, Michael Fehr, Lars Eckardt
BACKGROUND: The calcium sensitizer levosimendan is established for therapy of acutely decompensated congestive heart failure. Clinical experience suggests a possible proarrhythmic potential. The aim of the present study was to assess possible proarrhythmic effects and underlying electrophysiological mechanisms. METHODS AND RESULTS: Ten rabbit hearts were isolated and Langendorff-perfused. Thereafter, levosimendan was infused in 3 concentrations (0.5, 1, and 2μM)...
November 14, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/27872320/pott-s-disease-a-major-issue-for-an-unaccompanied-refugee-minor
#12
Cihan Papan, Ulrich von Both, Matthias Kappler, Birgit Kammer, Matthias Griese, Johannes Huebner
The incidence of TB in children in Germany has been on a rise since 2008, especially among foreign-born individuals. With rapidly increasing numbers of refugees from the numerous areas of conflict, this increase in incidence is not expected to halt, neither in Germany nor in Europe in general. We report a case of insufficient tracking in a 16-year-old unaccompanied refugee minor from Somalia who had a positive interferon γ release assay on arrival in Germany. No actions were undertaken, until 6 months later, an X-ray showed prominent hilar enlargement...
November 21, 2016: Thorax
https://www.readbyqxmd.com/read/27870991/potts-hamiltonian-models-of-protein-co-variation-free-energy-landscapes-and-evolutionary-fitness
#13
REVIEW
Ronald M Levy, Allan Haldane, William F Flynn
Potts Hamiltonian models of protein sequence co-variation are statistical models constructed from the pair correlations observed in a multiple sequence alignment (MSA) of a protein family. These models are powerful because they capture higher order correlations induced by mutations evolving under constraints and help quantify the connections between protein sequence, structure, and function maintained through evolution. We review recent work with Potts models to predict protein structure and sequence-dependent conformational free energy landscapes, to survey protein fitness landscapes and to explore the effects of epistasis on fitness...
November 18, 2016: Current Opinion in Structural Biology
https://www.readbyqxmd.com/read/27865502/retail-lighting-and-packaging-influence-consumer-acceptance-of-fluid-milk
#14
H L Potts, K N Amin, S E Duncan
Little is known about the effect of retail light-emitting diode (LED) exposure on consumer acceptance of milk. The study objective was to determine effects of fluorescent and LED lighting under retail storage conditions on consumer acceptance of milk. Consumer acceptance of milk stored under retail conditions was determined through sensory evaluation (2 studies; n = 150+ each) and analytical measures (dissolved oxygen, secondary oxidation products, riboflavin retention). Study 1 evaluated milk stored in high-density polyethylene (HDPE) packages for 4 h under LED light (960 lx)...
November 16, 2016: Journal of Dairy Science
https://www.readbyqxmd.com/read/27863970/treatment-of-distal-anterior-cerebral-artery-aneurysms-with-the-pipeline-embolization-device
#15
Erez Nossek, Daniel W Zumofen, Avi Setton, Matthew B Potts, Eytan Raz, Maksim Shapiro, Howard A Riina, Maria Angeles De Miquel, David J Chalif, Peter K Nelson
Aneurysms of the anterior cerebral artery (ACA) located distal to the anterior communicating artery complex (ACOM) remain challenging to treat with surgical clip reconstruction as well as with endovascular coil-embolization strategies. We have treated five complex geometry distal ACA aneurysms with endoluminal reconstruction using the Pipeline Embolization Device (PED). Two aneurysms were of the dysplastic fusiform type. Three aneurysms were of complex saccular configuration. Three aneurysms were treated electively at the outset with PED...
November 15, 2016: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/27846615/comprehensive-translocation-and-clonality-detection-in-lymphoproliferative-disorders-by-next-generation-sequencing
#16
Dorte Wren, Brian A Walker, Monika Bruggemann, Mark A Catherwood, Christiane Pott, Kostas Stamatopoulos, Anton W Langerak, David Gonzalez
No abstract text is available yet for this article.
October 20, 2016: Haematologica
https://www.readbyqxmd.com/read/27846393/decoding-the-dna-methylome-of-mantle-cell-lymphoma-in-the-light-of-the-entire-b-cell-lineage
#17
Ana C Queirós, Renée Beekman, Roser Vilarrasa-Blasi, Martí Duran-Ferrer, Guillem Clot, Angelika Merkel, Emanuele Raineri, Nuria Russiñol, Giancarlo Castellano, Sílvia Beà, Alba Navarro, Marta Kulis, Núria Verdaguer-Dot, Pedro Jares, Anna Enjuanes, María José Calasanz, Anke Bergmann, Inga Vater, Itziar Salaverría, Harmen J G van de Werken, Wyndham H Wilson, Avik Datta, Paul Flicek, Romina Royo, Joost Martens, Eva Giné, Armando Lopez-Guillermo, Hendrik G Stunnenberg, Wolfram Klapper, Christiane Pott, Simon Heath, Ivo G Gut, Reiner Siebert, Elías Campo, José I Martín-Subero
We analyzed the in silico purified DNA methylation signatures of 82 mantle cell lymphomas (MCL) in comparison with cell subpopulations spanning the entire B cell lineage. We identified two MCL subgroups, respectively carrying epigenetic imprints of germinal-center-inexperienced and germinal-center-experienced B cells, and we found that DNA methylation profiles during lymphomagenesis are largely influenced by the methylation dynamics in normal B cells. An integrative epigenomic approach revealed 10,504 differentially methylated regions in regulatory elements marked by H3K27ac in MCL primary cases, including a distant enhancer showing de novo looping to the MCL oncogene SOX11...
November 14, 2016: Cancer Cell
https://www.readbyqxmd.com/read/27843561/predictors-of-poor-outcome-among-children-with-heterotaxy-syndrome-a-retrospective-review
#18
Eiméar McGovern, Eoin Kelleher, James E Potts, John O'Brien, Kevin Walsh, Lars Nolke, Colin J McMahon
OBJECTIVE: To determine predictors of poor outcome in patients with heterotaxy syndrome. METHODS: A retrospective review of children with heterotaxy syndrome, in a single tertiary paediatric cardiology centre, was conducted between 1 January 1997 and 1 January 2014 to determine predictors of poor outcome. Poor outcome was defined as death, cardiac transplantation or New York Heart Association (NYHA) functional class III or IV. RESULTS: There were 35 patients diagnosed with heterotaxy syndrome, 17 of whom were diagnosed antenatally...
2016: Open Heart
https://www.readbyqxmd.com/read/27836047/a-study-of-leptospirosis-in-south-african-horses-and-associated-risk-factors
#19
V Simbizi, M N Saulez, A Potts, C Lötter, B Gummow
Most leptospiral infections in horses are asymptomatic; however, acute disease manifestations as well as reproductive failure and recurrent uveitis have been reported. In South Africa, the epidemiology of the disease in horses is not well documented. A serosurvey to determine what serovars were present in horses from Gauteng, KwaZulu-Natal and Western Cape Provinces and to get an estimate of the seroprevalence of leptospirosis was carried out from January 2013 until April 2014 with the assistance of four large equine hospitals located in these provinces...
November 1, 2016: Preventive Veterinary Medicine
https://www.readbyqxmd.com/read/27834678/receptor-species-dependent-desensitization-controls-kcnq1-kcne1-k-channels-as-downstream-effectors-of-gq-protein-coupled-receptors
#20
Marie-Cécile Kienitz, Dilyana Vladimirova, Christian Müller, Lutz Pott, Andreas Rinne
Activation of Gq protein-coupled receptors (GqPCRs) might induce divergent cellular responses, related to receptor-specific activation of different branches of the Gq-signaling pathway. Receptor-specific desensitization provides a mechanism of effector modulation by restricting the spatiotemporal activation of signaling components downstream of Gq We quantified signaling events downstream to GqPCR activation with Foerster resonance energy transfer (FRET)-based biosensors in CHO and HEK 293 cells. KCNQ1/KCNE1 channels (IKs) were measured as a functional readout of receptor-specific activation...
November 10, 2016: Journal of Biological Chemistry
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