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https://www.readbyqxmd.com/read/29352038/microenvironment-induced-cd44v6-promotes-early-disease-progression-in-chronic-lymphocytic-leukemia
#1
Julia C Gutjahr, Eva Szenes, Lisa Tschech, Daniela Asslaber, Michaela Schlederer, Simone Roos, Xiaobing Yu, Tamara Girbl, Christina Sternberg, Alexander Egle, Fritz Aberger, Ronen Alon, Lukas Kenner, Richard Greil, Veronique Orian-Rousseau, Tanja N Hartmann
Chronic lymphocytic leukemia (CLL) outgrowth depends on signals from the microenvironment. We have previously found that in vitro reconstitution of this microenvironment induces specific variant isoforms of the adhesion molecule CD44, which confer human CLL with high affinity to hyaluronan (HA). Here, we determined the in vivo contribution of standard CD44 and its variants to leukemic B-cell homing and proliferation in Tcl1 transgenic mice with a B-cell-specific CD44 deficiency. In these mice, leukemia onset was delayed and leukemic infiltration of spleen, liver, and lungs, but not of bone marrow was decreased...
January 19, 2018: Blood
https://www.readbyqxmd.com/read/29350654/autolytic-debridement-and-management-of-bacterial-load-with-an-occlusive-hydroactive-deressing-impregnated-with-polyhexamethylene-biguanide
#2
Stefano Mancini, Roberto Cuomo, Mauro Poggialini, Carlo D'Aniello, Giuseppe Botta
BACKGROUND: Debridement and control of bacterial load are key-points of wound care. The aim of this study is to evaluate the effectiveness of autolytic debridement and management of bacterial load (bioburden) of an occlusive hydro-active dressing impregnated with polyhexamethylene biguanide (PHMB). METHODS: We used an occlusive dressing of hydro-active for leg ulcers' treatment (TenderWet-plus® - Hartmann).  Inclusion criteria were: presence of a fibrinous ulcer with multiple etiopathogenesis, in absence of clinical infection, no hypersecretion and diameter within 5 cm...
January 16, 2018: Acta Bio-medica: Atenei Parmensis
https://www.readbyqxmd.com/read/29349481/systematic-review-and-comparison-of-national-and-international-guidelines-on-diverticular-disease
#3
REVIEW
T Galetin, A Galetin, K-H Vestweber, A D Rink
PURPOSE: Diverticular disease is common and of increasing medical and economical importance. Various practice guidelines on diagnostic and treatment on this disease exist. We compared current guidelines on the disease in order to identify concordant and discordant recommendations. METHOD: Eleven national and international guidelines on diverticular disease published over the last 10 years have been identified by a systematic literature review on PubMed and compared in detail for 20 main and 51 subtopics...
January 18, 2018: International Journal of Colorectal Disease
https://www.readbyqxmd.com/read/29348486/phase-i-dose-escalation-study-of-copanlisib-in-combination-with-gemcitabine-or-cisplatin-plus-gemcitabine-in-patients-with-advanced-cancer
#4
R D Kim, S R Alberts, C Peña, I Genvresse, A Ajavon-Hartmann, C Xia, A Kelly, J E Grilley-Olson
BACKGROUND: Copanlisib is a pan-class I phosphatidylinositol 3-kinase (PI3K) inhibitor with predominant PI3K-α/δ activity that has demonstrated clinical activity and manageable safety when administered as monotherapy in a phase II study. Combination therapy may overcome compensatory signalling that could occur with PI3K pathway inhibition, resulting in enhanced inhibitory activity, and preclinical studies of copanlisib with gemcitabine have demonstrated potent anti-tumour activity in vivo...
January 18, 2018: British Journal of Cancer
https://www.readbyqxmd.com/read/29347681/computation-of-the-asymptotic-states-of-modulated-open-quantum-systems-with-a-numerically-exact-realization-of-the-quantum-trajectory-method
#5
V Volokitin, A Liniov, I Meyerov, M Hartmann, M Ivanchenko, P Hänggi, S Denisov
Quantum systems out of equilibrium are presently a subject of active research, both in theoretical and experimental domains. In this work, we consider time-periodically modulated quantum systems that are in contact with a stationary environment. Within the framework of a quantum master equation, the asymptotic states of such systems are described by time-periodic density operators. Resolution of these operators constitutes a nontrivial computational task. Approaches based on spectral and iterative methods are restricted to systems with the dimension of the hosting Hilbert space dimH=N≲300, while the direct long-time numerical integration of the master equation becomes increasingly problematic for N≳400, especially when the coupling to the environment is weak...
November 2017: Physical Review. E
https://www.readbyqxmd.com/read/29347304/convex-hulls-of-random-walks-in-higher-dimensions-a-large-deviation-study
#6
Hendrik Schawe, Alexander K Hartmann, Satya N Majumdar
The distribution of the hypervolume V and surface ∂V of convex hulls of (multiple) random walks in higher dimensions are determined numerically, especially containing probabilities far smaller than P=10^{-1000} to estimate large deviation properties. For arbitrary dimensions and large walk lengths T, we suggest a scaling behavior of the distribution with the length of the walk T similar to the two-dimensional case and behavior of the distributions in the tails. We underpin both with numerical data in d=3 and d=4 dimensions...
December 2017: Physical Review. E
https://www.readbyqxmd.com/read/29347217/aging-in-the-three-dimensional-random-field-ising-model
#7
Sebastian von Ohr, Markus Manssen, Alexander K Hartmann
We studied the nonequilibrium aging behavior of the random-field Ising model in three dimensions for various values of the disorder strength. This allowed us to investigate how the aging behavior changes across the ferromagnetic-paramagnetic phase transition. We investigated a large system size of N=256^{3} spins and up to 10^{8} Monte Carlo sweeps. To reach these necessary long simulation times, we employed an implementation running on Intel Xeon Phi coprocessors, reaching single-spin-flip times as short as 6 ps...
July 2017: Physical Review. E
https://www.readbyqxmd.com/read/29346149/testing-elevated-protease-activity-prospective-analysis-of-160-wounds
#8
Anike Lockmann, Tillmann Schill, Franziska Hartmann, Lisa-Lena Grönemeyer, Ricarda Holzkamp, Michael P Schön, Kai-Martin Thoms
OBJECTIVE: Given that local elevated protease activity (EPA) has been implicated in impaired wound healing, a prospective single-center study was conducted to assess protease activity in various wound types. METHODS: Protease activity was determined using an easy-to-use test system (Woundchek Protease Status Test Kit; Systagenix, Gatwick, United Kingdom) in 160 wounds in 143 patients. The assay detects the combined activity of inflammatory proteases, mainly matrix metalloproteinases 8 and 9 and human neutrophil elastase...
February 2018: Advances in Skin & Wound Care
https://www.readbyqxmd.com/read/29345725/polyols-and-uv-sunscreens-in-the-prasiola-clade-trebouxiophyceae-chlorophyta-as-metabolites-for-stress-response-and-chemotaxonomy
#9
Vivien Hotter, Karin Glaser, Anja Hartmann, Markus Ganzera, Ulf Karsten
In many regions of the world, aeroterrestrial green algae of the Trebouxiophyceae (Chlorophyta) represent very abundant soil microorganisms, and hence their taxonomy is crucial to investigate their physiological performance and ecological importance. Due to a lack in morphological features, taxonomic and phylogenetic studies of Trebouxiophycean algae can be a challenging task. Since chemotaxonomic markers could be a great assistance in this regard, 22 strains of aeroterrestrial Trebouxiophyceae were chemically screened for their polyol-patterns as well as for mycosporine-like amino acids (MAAs) in their aqueous extracts using RP-HPLC and LC-MS...
January 18, 2018: Journal of Phycology
https://www.readbyqxmd.com/read/29343486/electronic-cigarettes-for-smoking-cessation
#10
Jamie Hartmann-Boyce, Rachna Begh, Paul Aveyard
No abstract text is available yet for this article.
January 17, 2018: BMJ: British Medical Journal
https://www.readbyqxmd.com/read/29341754/plasma-versus-drude-modeling-of-the-casimir-force-beyond-the-proximity-force-approximation
#11
Michael Hartmann, Gert-Ludwig Ingold, Paulo A Maia Neto
We calculate the Casimir force and its gradient between a spherical and a planar gold surface. Significant numerical improvements allow us to extend the range of accessible parameters into the experimental regime. We compare our numerically exact results with those obtained within the proximity force approximation (PFA) employed in the analysis of all Casimir force experiments reported in the literature so far. Special attention is paid to the difference between the Drude model and the dissipationless plasma model at zero frequency...
July 28, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/29341739/direct-determination-of-dynamic-properties-of-coulomb-and-yukawa-classical-one-component-plasmas
#12
Yu V Arkhipov, A Askaruly, A E Davletov, D Yu Dubovtsev, Z Donkó, P Hartmann, I Korolov, L Conde, I M Tkachenko
Dynamic characteristics of strongly coupled classical one-component Coulomb and Yukawa plasmas are obtained within the nonperturbative model-free moment approach without any data input from simulations so that the dynamic structure factor (DSF) satisfies the first three nonvanishing sum rules automatically. The DSF, dispersion, decay, sound speed, and other characteristics of the collective modes are determined using exclusively the static structure factor calculated from various theoretical approaches including the hypernetted chain approximation...
July 28, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/29341300/inflammatory-and-related-biomarkers-are-associated-with-post-transplant-diabetes-mellitus-in-kidney-recipients
#13
Torbjørn F Heldal, Thor Ueland, Trond Jenssen, Anders Hartmann, Anna V Reisaeter, Pål Aukrust, Annika Michelsen, Anders Åsberg
In this study we investigate the association between selected inflammatory related biomarkers and post transplant hyperglycemia in kidney transplant recipients. This retrospective analysis comprises 852 patients receiving a kidney transplant at the Norwegian national transplant centre between 2007 and 2012, all having a normal oral glucose tolerance test (OGTT) before transplantation. A diagnostic OGTT was performed 10 weeks post-transplant to examine the association between inflammation related biomarkers and two-hour plasma glucose (2HPG) by multivariable linear regression models adjusting for BMI, age, graft function, fasting insulin levels, dosage of prednisolone, and concentration of calcineurin inhibitors...
January 16, 2018: Transplant International: Official Journal of the European Society for Organ Transplantation
https://www.readbyqxmd.com/read/29340543/colostomy-closure-risk-factors-for-complications
#14
Alexandre Z Fonseca, Edson Uramoto, Otto M Santos-Rosa, Stephanie Santin, Marcelo Ribeiro-Jr
BACKGROUND: : The restoration of intestinal continuity is an elective procedure that is not free of complications; on the contrary, many studies have proven a high level of morbidity and mortality. It is multifactorial, and has factors inherent to the patients and to the surgical technique. AIM: : To identify epidemiological features of patients that underwent ostomy closure analyzing the information about the surgical procedure and its arising complications. METHOD: : It was realized a retrospective analysis of medical records of patients who underwent ostomy closure over a period of seven years (2009-2015)...
October 2017: Arquivos Brasileiros de Cirurgia Digestiva: ABCD, Brazilian Archives of Digestive Surgery
https://www.readbyqxmd.com/read/29337842/perioperative-coagulation-management-in-liver-transplant-recipients
#15
Dmitri Bezinover, Daniel Dirkmann, James Findlay, Cosmin Guta, Matthias Hartmann, Ramona Nicolau-Raducu, Ahmed M Mukhtar, Marina Moguilevitch, Evan Pivalizza, David Rosenfeld, Fuat Saner, Christopher Wray, Gebhardt Wagener, James West
We review contemporary coagulation management for patients undergoing liver transplantation. A better understanding of the complex physiologic changes that occur in patients with end-stage liver disease has resulted in significant advances in anesthetic and coagulation management. A group of internationally recognized experts have critically evaluated current approaches for coagulopathy detection and management. Strategies for blood component and factor replacement have been evaluated and recommended therapies proposed...
January 15, 2018: Transplantation
https://www.readbyqxmd.com/read/29334900/process-evaluation-of-the-radiant-community-study-a-dialysis-facility-level-intervention-to-increase-referral-for-kidney-transplantation
#16
Reem E Hamoda, Jennifer C Gander, Laura J McPherson, Kimberly J Arriola, Loren Cobb, Stephen O Pastan, Laura Plantinga, Teri Browne, Erica Hartmann, Laura Mulloy, Carlos Zayas, Jenna Krisher, Rachel E Patzer
BACKGROUND: The Reducing Disparities in Access to kidNey Transplantation Community Study (RaDIANT) was an End-Stage Renal Disease (ESRD) Network 6-developed, dialysis facility-level randomized trial testing the effectiveness of a 1-year multicomponent education and quality improvement intervention in increasing referral for kidney transplant evaluation among selected Georgia dialysis facilities. METHODS: To assess implementation of the RaDIANT intervention, we conducted a process evaluation at the conclusion of the intervention period (January-December 2014)...
January 15, 2018: BMC Nephrology
https://www.readbyqxmd.com/read/29334597/monitoring-global-tree-mortality-patterns-and-trends-report-from-the-vw-symposium-crossing-scales-and-disciplines-to-identify-global-trends-of-tree-mortality-as-indicators-of-forest-health
#17
Henrik Hartmann, Bernhard Schuldt, Tanja G M Sanders, Cate Macinnis-Ng, Hans Juergen Boehmer, Craig D Allen, Andreas Bolte, Thomas W Crowther, Matthew C Hansen, Belinda E Medlyn, Nadine K Ruehr, William R L Anderegg
No abstract text is available yet for this article.
February 2018: New Phytologist
https://www.readbyqxmd.com/read/29332133/fumarate-hydratase-fh-deficiency-in-uterine-leiomyomas-recognition-by-histological-features-versus-blind-immunoscreening
#18
Lisa Siegler, Ramona Erber, Stefanie Burghaus, Tobias Brodkorb, David Wachter, Nafisa Wilkinson, James Bolton, Helen Stringfellow, Florian Haller, Matthias W Beckmann, Arndt Hartmann, Abbas Agaimy
Hereditary leiomyomatosis and renal cell carcinoma (HLRCC) syndrome is a rare autosomal dominant disease caused by germline mutations in the fumarate hydratase (FH) gene. Affected individuals develop cutaneous and uterine leiomyomas and aggressive RCC. To date, only few publications described the frequency and morphology of FH-deficient uterine leiomyomas. We reviewed 22 cases collected over 8 years from routine and consultation files based on distinctive histological features. In addition, we screened 580 consecutive uterine leiomyomas from 484 patients, 23 extra-uterine and 8 uterine leiomyosarcomas, and 6 leiomyomas with bizarre nuclei for FH loss using immunohistochemistry (IHC) on tissue microarrays (TMAs)...
January 13, 2018: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/29331340/hsp72-protects-from-liver-injury-via-attenuation-of-hepatocellular-death-oxidative-stress-and-jnk-signaling
#19
Kateryna Levada, Nurdan Guldiken, Xiaoji Zhang, Giovanna Vella, Fa-Rong Mo, Laura P James, Johannes Haybaeck, Sonja M Kessler, Alexandra K Kiemer, Thomas Ott, Daniel Hartmann, Norbert Hüser, Marianne Ziol, Christian Trautwein, Pavel Strnad
BACKGROUND AND AIMS: Heat shock protein (Hsp) 72 is a molecular chaperone that is upregulated in response to stress and possesses broad cytoprotective functions. To determine its hepatic function, we studied its expression in human liver disorders and its biological significance in newly generated transgenic animals. AIM AND METHODS: Double transgenic mice overexpressing Hsp72 (gene HSPA1A) under the control of a tissue-specific tetracycline-inducible system (Hsp72-LAP mice) were produced...
January 10, 2018: Journal of Hepatology
https://www.readbyqxmd.com/read/29330206/evolution-of-cytogenetically-normal-acute-myeloid-leukemia-during-therapy-and-relapse-an-exome-sequencing-study-of-50-patients
#20
Philipp A Greif, Luise Hartmann, Sebastian Vosberg, Sophie Stief, Raphael Mattes, Ines Hellmann, Klaus H Metzeler, Tobias Herold, Stefanos Bamopoulos, Paul Kerbs, Vindi Jurinovic, Daniela Schumacher, Friederike Pastore, Kathrin Bräundl, Evelyn Zellmeier, Bianka Ksienzyk, Nikola Konstandin, Stephanie Schneider, Alexander Graf, Stefan Krebs, Helmut Blum, Martin Neumann, Claudia Baldus, Stefan K Bohlander, Stephan Wolf, Dennis Goerlich, Wolfgang E Berdel, Bernhard J Woermann, Wolfgang Hiddemann, Karsten Spiekermann
PURPOSE: To study mechanisms of therapy-resistance and disease progression, we analyzed the evolution of cytogenetically normal acute myeloid leukemia (CN-AML) based on somatic alterations. EXPERIMENTAL DESIGN: We performed exome-sequencing of matched diagnosis, remission and relapse samples from 50 CN-AML patients treated with intensive chemotherapy. Mutation patterns were correlated with clinical parameters. RESULTS: Evolutionary patterns correlated with clinical outcome...
January 12, 2018: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
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