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https://www.readbyqxmd.com/read/29352892/synergistic-effect-of-carbon-nanotubes-and-graphene-for-high-performance-cellulose-acetate-membranes-in-biomedical-applications
#1
Mariana Ioniță, Livia Elena Crică, Stefan Ioan Voicu, Sorina Dinescu, Florin Miculescu, Marieta Costache, Horia Iovu
Comparative evaluation of innovative combinations of three types of carbon nanomaterial (CNM) highlighted membranes with important potential for biomedical applications. Non-solvent induced phase separation coupled with ultrasound technique was used to generate membranes comprised of (i) cellulose acetate/ammonia functionalized carbon nanotubes (CA/CNT), (ii) cellulose acetate/ammonia functionalized graphene oxide (CA/GO), and (iii) cellulose acetate/CNT-GO. Structural, topographical and thermal features as well as water and ethanol permeation, bovine serum albumin (BSA) and haemoglobin (Hb) rejection were evaluated...
March 1, 2018: Carbohydrate Polymers
https://www.readbyqxmd.com/read/29352859/is-selective-5-ht1f-receptor-agonism-an-entity-apart-from-that-of-the-triptans-in-antimigraine-therapy
#2
REVIEW
Eloísa Rubio-Beltrán, Alejandro Labastida-Ramírez, Carlos M Villalón, Antoinette MaassenVanDenBrink
Migraine is a neurovascular disorder that involves activation of the trigeminovascular system and cranial vasodilation mediated by release of calcitonin gene-related peptide (CGRP). The gold standard for acute migraine treatment are the triptans, 5-HT1B/1D/(1F) receptor agonists. Their actions are thought to be mediated through activation of: (i) 5-HT1B receptors in cranial blood vessels with subsequent cranial vasoconstriction; (ii) prejunctional 5-HT1D receptors on trigeminal fibers that inhibit trigeminal CGRP release; and (iii) 5-HT1B/1D/1F receptors in central nervous system involved in (anti)nociceptive modulation...
January 17, 2018: Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/29352713/clinical-variables-associated-with-overall-survival-in-metastatic-castration-resistant-prostate-cancer-patients-treated-with-sipuleucel-t-immunotherapy
#3
Xiao X Wei, Jaselle Perry, Emily Chang, Li Zhang, Robert A Hiatt, Charles J Ryan, Eric J Small, Lawrence Fong
BACKGROUND: Sipuleucel-T is an autologous cell-based cancer immunotherapy for men with asymptomatic or minimally symptomatic metastatic castration-resistant prostate cancer (mCRPC). Its approval by the Food and Drug Administration was based on demonstration of an overall survival (OS) benefit in randomized placebo-controlled phase III trials. However, treatment was associated with a prostate-specific antigen (PSA) decline in only a small minority of patients. Understanding the clinical factors that are associated with OS could help guide treatment decisions, including patient selection and the timing of sipuleucel-T relative to other therapies...
December 27, 2017: Clinical Genitourinary Cancer
https://www.readbyqxmd.com/read/29352094/auditory-brainstem-function-in-microcephaly-related-to-zika-virus-infection
#4
Dimitri Marques Abramov, Tania Saad, Saint-Clair Gomes-Junior, Daniel de Souza E Silva, Izabel Araújo, Maria Elizabeth Lopes Moreira, Vladimir V Lazarev
OBJECTIVE: To study the effect of prenatal Zika virus (ZV) infection on brainstem function reflected in brainstem auditory evoked potentials (BAEPs). METHODS: In a cross-sectional study in 19 children (12 girls) with microcephaly related to ZV infection, aged between 12 and 62 weeks, the brainstem function was examined through BAEPs. The latencies of wave peaks I, III, and V of the left and right ears (n = 37) were standardized according to normative data, and compared between them by 2-tailed t test...
January 19, 2018: Neurology
https://www.readbyqxmd.com/read/29351985/tocilizumab-tacrolimus-and-methotrexate-for-the-prevention-of-acute-graft-versus-host-disease-low-incidence-of-lower-gastrointestinal-tract-disease
#5
William R Drobyski, Aniko Szabo, Fenlu Zhu, Carolyn Keever-Taylor, Kyle M Hebert, Renee Dunn, Sharon Yim, Bryon Johnson, Anita D'Souza, Mary Eapen, Timothy S Fenske, Parameswaran Hari, Mehdi Hamadani, Mary M Horowitz, J Douglas Rizzo, Wael Saber, Nirav Shah, Bronwen Shaw, Marcelo Pasquini
We conducted a phase 2 study in which patients undergoing allogeneic hematopoietic stem cell transplantation received Tocilizumab in addition to standard immune suppression with tacrolimus and methotrexate for graft versus host disease prophylaxis. Thirty-five patients were enrolled between January 2015 and June 2016. The median age of the cohort was 66 (range 22-76). All patients received busulfan-based conditioning, and were transplanted with HLA-matched related or matched unrelated bone marrow or peripheral stem cell grafts...
January 19, 2018: Haematologica
https://www.readbyqxmd.com/read/29351570/joint-adolescent-adult-early-phase-clinical-trials-to-improve-access-to-new-drugs-for-adolescents-with-cancer-proposals-from-the-multi-stakeholder-platform-accelerate
#6
N Gaspar, L V Marshall, D Binner, R Herold, R Rousseau, P Blanc, R Capdeville, J Carleer, C Copland, Y Kerloeguen, K Norga, L Pacaud, M-A Sevaux, C Spadoni, J Sterba, F Ligas, T Taube, M Uttenreuther-Fischer, S Chioato, M A O'Connell, B Geoerger, J-Y Blay, J C Soria, S Kaye, B Wulff, L Brugières, G Vassal, A D J Pearson
The impressive progress recently observed in adult cancers through the introduction of new drugs has not yet been translated to adolescents between 12 and 17 years of age. Currently adolescents are grouped with children, so their access to new, effective drugs already available for adults is delayed because paediatric drug development starts late relative to adult programmes. Moreover, specific early phase trials designed exclusively for adolescents in rare diseases recruit poorly, even if conducted internationally...
January 16, 2018: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/29351439/role-of-reactive-oxygen-species-and-sulfide-quinone-oxoreductase-in-hydrogen-sulfide-induced-contraction-of-rat-pulmonary-arteries
#7
Jesus Prieto-Lloret, Vladimir A Snetkov, Yasin Shaifta, Inmaculada Docio, Michelle J Connolly, Charles E Mackay, Greg A Knock, Jeremy Pt Ward, Philip I Aaronson
Application of H2S ('sulfide') elicits a complex contraction in rat pulmonary arteries (PA) comprising a small transient contraction (phase 1; Ph1) followed by relaxation and then a second, larger, and more sustained contraction (phase 2; Ph2). We investigated the mechanisms causing this response using isometric myography in rat second order PA, with Na2S as a sulfide donor. Both phases of contraction to 1000μM Na2S were attenuated by the pan-PKC inhibitor Gö6983 (3μM) and by 50μM ryanodine; the Ca2+ channel blocker nifedipine (1μM) was without effect...
December 28, 2017: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/29351277/ex-ante-assessment-of-different-vaccination-based-control-schedules-against-the-peste-des-petits-ruminants-virus-in-sub-saharan-africa
#8
Pachka Hammami, Renaud Lancelot, Joseph Domenech, Matthieu Lesnoff
BACKGROUND: Peste des petits ruminants (PPR) is a highly contagious and widespread viral infection of small ruminants (goats and sheep), causing heavy economic losses in many developing countries. Therefore, its progressive control and global eradication by 2030 was defined as a priority by international organizations addressing animal health. The control phase of the global strategy is based on mass vaccination of small ruminant populations in endemic regions or countries. It is estimated that a 70% post-vaccination immunity rate (PVIR) is needed in a given epidemiological unit to prevent PPR virus spread...
2018: PloS One
https://www.readbyqxmd.com/read/29350771/recombinant-relaxin-protects-liver-transplants-from-ischemia-damage-via-hepatocyte-glucocorticoid-receptor-from-bench-to-bedside
#9
Shoichi Kageyama, Kojiro Nakamura, Takehiro Fujii, Bibo Ke, Rebecca A Sosa, Elaine F Reed, Nakul Datta, Ali Zarrinpar, Ronald W Busuttil, Jerzy W Kupiec-Weglinski
Hepatic ischemia-reperfusion injury (IRI) represents a major risk factor of early graft dysfunction and acute/chronic rejection as well as a key obstacle to expanding the donor pool in orthotopic liver transplantation (OLT). Although glucocorticoid receptor (GR) signaling may enhance cytoprotective programs, clinical use of glucocorticoid is limited due to adverse effects, while clinical relevance of GR-facilitated cytoprotection in OLT remains unknown. We aimed to evaluate the significance of hepatic GR in clinical OLT and verify the impact of recombinant human relaxin (rhRLX), which may function as GR agonist in tissue/disease-specific manner...
January 19, 2018: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/29350568/abp-980-promising-trastuzumab-biosimilar-for-her2-positive-breast-cancer
#10
Elisavet Paplomata, Rita Nahta
Approval of the HER2-targeted antibody trastuzumab dramatically improved outcomes for patients with HER2-positive breast cancer. Multiple trastuzumab biosimilars, including ABP 980, are in clinical development. Biosimilars are not identical to the reference biologic, but exhibit equivalence and safety in analytical and clinical studies. Areas covered: A brief introduction to trastuzumab, overview of trastuzumab biosimilars, and detailed review of ABP 980 preclinical and clinical studies are included. We searched PubMed and 2016-2017 ASCO and ESMO conference proceedings for "ABP 980" or "trastuzumab biosimilar"...
January 19, 2018: Expert Opinion on Biological Therapy
https://www.readbyqxmd.com/read/29350344/the-relationship-between-exercise-dose-and-health-related-quality-of-life-with-a-phase-iii-cardiac-rehabilitation-program
#11
Borja Del Pozo-Cruz, Graeme Carrick-Ranson, Stacey Reading, Paul Nolan, Lance C Dalleck
PURPOSE: To quantify the relationship between the change in exercise dose and health-related quality of life (HRQoL) in a cohort of patients participating in a community-based phase-3 cardiac rehabilitation (CR) program. METHODS: A retrospective, pre-experimental (no control group) design of 58 participants that completed a phase-3, 12-week exercise-based CR program was used to test the current hypothesis. Self-reported HRQoL (36-Item Short Form Health Survey Version 2, SF-36v2) was assessed prior and after completing the CR program...
January 19, 2018: Quality of Life Research
https://www.readbyqxmd.com/read/29349362/bridging-stent-repair-of-type-iii-endoleak-causing-aortocaval-fistula-after-branched-aortic-endovascular-repair
#12
Aasim Khan, Thodur Vasudevan
A 62-year-old man presented to our department with abdominal pain and diarrhea for 3 weeks on a background of previous branched endovascular repair for a thoracoabdominal aneurysm. A triple-phase computed tomography scan of his abdomen and pelvis showed a large aortocaval fistula caused by a type III endoleak from a dislodged superior mesenteric artery stent. He was successfully treated with a BeGraft (Bentley Innomed, Hechingen, Germany) by using an endovascular technique.
March 2017: Journal of Vascular Surgery Cases and Innovative Techniques
https://www.readbyqxmd.com/read/29348681/impact-of-a-five-dimensional-framework-on-r-d-productivity-at-astrazeneca
#13
REVIEW
Paul Morgan, Dean G Brown, Simon Lennard, Mark J Anderton, J Carl Barrett, Ulf Eriksson, Mark Fidock, Bengt Hamrén, Anthony Johnson, Ruth E March, James Matcham, Jerome Mettetal, David J Nicholls, Stefan Platz, Steve Rees, Michael A Snowden, Menelas N Pangalos
In 2011, AstraZeneca embarked on a major revision of its research and development (R&D) strategy with the aim of improving R&D productivity, which was below industry averages in 2005-2010. A cornerstone of the revised strategy was to focus decision-making on five technical determinants (the right target, right tissue, right safety, right patient and right commercial potential). In this article, we describe the progress made using this '5R framework' in the hope that our experience could be useful to other companies tackling R&D productivity issues...
January 19, 2018: Nature Reviews. Drug Discovery
https://www.readbyqxmd.com/read/29348327/genome-instability-as-a-consequence-of-defects-in-the-resolution-of-recombination-intermediates
#14
Stephen C West, Ying Wai Chan
The efficient processing of homologous recombination (HR) intermediates, which often contain four-way structures known as Holliday junctions (HJs), is required for proper chromosome segregation at mitosis. Eukaryotic cells possess three distinct pathways of resolution: (i) HJ dissolution mediated by BLM-topoisomerase IIIα-RMI1-RMI2 (BTR) complex, and HJ resolution catalyzed by either (ii) SLX1-SLX4-MUS81-EME1-XPF-ERCC1 (SMX complex) or (iii) GEN1. The BTR pathway acts at all times throughout the cell cycle, whereas the actions of SMX and GEN1 are restrained in S phase and become elevated late in the cell cycle to ensure the resolution of persistent recombination intermediates before mitotic division...
January 18, 2018: Cold Spring Harbor Symposia on Quantitative Biology
https://www.readbyqxmd.com/read/29347996/the-apathy-in-dementia-methylphenidate-trial-2-admet-2-study-protocol-for-a-randomized-controlled-trial
#15
Roberta W Scherer, Lea Drye, Jacobo Mintzer, Krista Lanctôt, Paul Rosenberg, Nathan Herrmann, Prasad Padala, Olga Brawman-Mintzer, William Burke, Suzanne Craft, Alan J Lerner, Allan Levey, Anton Porsteinsson, Christopher H van Dyck
BACKGROUND: Alzheimer's disease (AD) is characterized not only by cognitive and functional decline, but also often by the presence of neuropsychiatric symptoms. Apathy, which can be defined as a lack of motivation, is one of the most prevalent neuropsychiatric symptoms in AD and typically leads to a worse quality of life and greater burden for caregivers. Treatment options for apathy in AD are limited, but studies have examined the use of the amphetamine, methylphenidate. The Apathy in Dementia Methylphenidate Trial (ADMET) found that treatment of apathy in AD with methylphenidate was associated with significant improvement in apathy in two of three outcome measures, some evidence of improvement in global cognition, and minimal adverse events...
January 18, 2018: Trials
https://www.readbyqxmd.com/read/29347746/topological-defects-in-two-dimensional-orientation-field-models-for-grain-growth
#16
Bálint Korbuly, Mathis Plapp, Hervé Henry, James A Warren, László Gránásy, Tamás Pusztai
Standard two-dimensional orientation-field-based phase-field models rely on a continuous scalar field to represent crystallographic orientation. The corresponding order parameter space is the unit circle, which is not simply connected. This topological property has important consequences for the resulting multigrain structures: (i) trijunctions may be singular; (ii) for each pair of grains there exist two different grain boundary solutions that cannot continuously transform to one another; (iii) if both solutions appear along a grain boundary, a topologically stable, singular point defect must exist between them...
November 2017: Physical Review. E
https://www.readbyqxmd.com/read/29347707/current-quantization-and-fractal-hierarchy-in-a-driven-repulsive-lattice-gas
#17
Pietro Rotondo, Alessandro Luigi Sellerio, Pietro Glorioso, Sergio Caracciolo, Marco Cosentino Lagomarsino, Marco Gherardi
Driven lattice gases are widely regarded as the paradigm of collective phenomena out of equilibrium. While such models are usually studied with nearest-neighbor interactions, many empirical driven systems are dominated by slowly decaying interactions such as dipole-dipole and Van der Waals forces. Motivated by this gap, we study the nonequilibrium stationary state of a driven lattice gas with slow-decayed repulsive interactions at zero temperature. By numerical and analytical calculations of the particle current as a function of the density and of the driving field, we identify (i) an abrupt breakdown transition between insulating and conducting states, (ii) current quantization into discrete phases where a finite current flows with infinite differential resistivity, and (iii) a fractal hierarchy of excitations, related to the Farey sequences of number theory...
November 2017: Physical Review. E
https://www.readbyqxmd.com/read/29347168/quantifying-the-entropic-cost-of-cellular-growth-control
#18
Daniele De Martino, Fabrizio Capuani, Andrea De Martino
Viewing the ways a living cell can organize its metabolism as the phase space of a physical system, regulation can be seen as the ability to reduce the entropy of that space by selecting specific cellular configurations that are, in some sense, optimal. Here we quantify the amount of regulation required to control a cell's growth rate by a maximum-entropy approach to the space of underlying metabolic phenotypes, where a configuration corresponds to a metabolic flux pattern as described by genome-scale models...
July 2017: Physical Review. E
https://www.readbyqxmd.com/read/29346040/bevacizumab-maintenance-versus-no-maintenance-during-chemotherapy-free-intervals-in-metastatic-colorectal-cancer-a-randomized-phase-iii-trial-prodige-9
#19
Thomas Aparicio, Francois Ghiringhelli, Valérie Boige, Karine Le Malicot, Julien Taieb, Olivier Bouché, Jean-Marc Phelip, Eric François, Christian Borel, Roger Faroux, Laetitia Dahan, Stéphane Jacquot, Dominique Genet, Faiza Khemissa, Etienne Suc, Françoise Desseigne, Patrick Texereau, Come Lepage, Jaafar Bennouna
Purpose Conflicting results are reported for maintenance treatment with bevacizumab during chemotherapy-free intervals (CFI) in metastatic colorectal cancer after induction chemotherapy. Patients and Methods In this open-label, phase III, randomized controlled trial, we compared the tumor control duration (TCD) observed with bevacizumab maintenance and with no treatment (observation) during CFI subsequent to induction chemotherapy with 12 cycles of fluorouracil, leucovorin, and irinotecan plus bevacizumab. After disease progression, the induction regimen was repeated for eight cycles, followed by a new CFI...
January 18, 2018: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/29345956/measuring-three-dimensional-strain-and-structural-defects-in-a-single-ingaas-nanowire-using-coherent-x-ray-multi-angle-bragg-projection-ptychography
#20
Megan O Hill, Irene Calvo-Almazan, Mark Allain, Martin Holt, Andrew Ulvestad, Julian Treu, Gregor Koblmueller, Chunyi Huang, Xiaojing Huang, Hanfei Yan, E Nazarestski, Yong S Chu, G Brian Stephenson, Virginie Chamard, Lincoln Lauhon, Stephan O Hruszkewycz
III-As nanowires are candidates for near infrared light emitters and detectors that can be directly integrated onto silicon. However, nanoscale to microscale variations in structure, composition, and strain within a given nanowire, as well as variations between nanowires, pose challenges to correlating microstructure with device performance. In this work, we utilize coherent nano-focused x-rays to characterize stacking defects and strain in a single InGaAs nanowire supported on Si. By reconstructing diffraction patterns from the 2-1-10 Bragg peak, we show that the lattice orientation varies along the length of the wire, while the strain field along the cross-section is largely unaffected, leaving the band structure unperturbed...
January 18, 2018: Nano Letters
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