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https://www.readbyqxmd.com/read/28647900/breast-cancer-risk-associated-with-genotype-polymorphisms-of-the-aurora-kinase-a-gene-aurka-a-case-control-study-in-a-high-altitude-ecuadorian-mestizo-population
#1
Andrés López-Cortés, Alejandro Cabrera-Andrade, Fabián Oña-Cisneros, Felipe Rosales, Malena Ortiz, Eduardo Tejera, César Paz-Y-Miño
Breast cancer (BC) is the leading cause of cancer related death among women in 2014. The AURKA gene that encodes the protein called Aurora kinase A plays an important role in the progression of the cell cycle, by controlling and promoting the entry into the phase of mitosis. The single nucleotide polymorphism AURKA T91A (rs2273535) (Phe21Ile) has been identified as functional alternator of this kinase, the Ile allele is associated with the occurrence of chromosome segregation errors and tumor progression. Therefore, it is essential to know how BC risk is associated with histopathological characteristics, immunohistochemical characteristics, and genotype polymorphism in a high altitude Ecuadorian mestizo population...
June 24, 2017: Pathology Oncology Research: POR
https://www.readbyqxmd.com/read/28646906/modulation-of-oxidative-phosphorylation-and-redox-homeostasis-in-mitochondrial-ndufs4-deficiency-via-mesenchymal-stem-cells
#2
Marlen Melcher, Katharina Danhauser, Annette Seibt, Özer Degistirici, Fabian Baertling, Arun Kumar Kondadi, Andreas S Reichert, Werner J H Koopman, Peter H G M Willems, Richard J Rodenburg, Ertan Mayatepek, Roland Meisel, Felix Distelmaier
BACKGROUND: Disorders of the oxidative phosphorylation (OXPHOS) system represent a large group among the inborn errors of metabolism. The most frequently observed biochemical defect is isolated deficiency of mitochondrial complex I (CI). No effective treatment strategies for CI deficiency are so far available. The purpose of this study was to investigate whether and how mesenchymal stem cells (MSCs) are able to modulate metabolic function in fibroblast cell models of CI deficiency. METHODS: We used human and murine fibroblasts with a defect in the nuclear DNA encoded NDUFS4 subunit of CI...
June 24, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28646868/comprehensive-benchmarking-of-markov-chain-monte-carlo-methods-for-dynamical-systems
#3
Benjamin Ballnus, Sabine Hug, Kathrin Hatz, Linus Görlitz, Jan Hasenauer, Fabian J Theis
BACKGROUND: In quantitative biology, mathematical models are used to describe and analyze biological processes. The parameters of these models are usually unknown and need to be estimated from experimental data using statistical methods. In particular, Markov chain Monte Carlo (MCMC) methods have become increasingly popular as they allow for a rigorous analysis of parameter and prediction uncertainties without the need for assuming parameter identifiability or removing non-identifiable parameters...
June 24, 2017: BMC Systems Biology
https://www.readbyqxmd.com/read/28645687/generalized-rash-and-lymphocytosis-as-clinical-onset-adult-t-cell-leukemia-lymphoma
#4
Pablo Manresa Manresa, Francisco de Paz Andrés, José Juan Verdú Belmar, Fabián Tarín Rodrigo
No abstract text is available yet for this article.
June 20, 2017: Medicina Clínica
https://www.readbyqxmd.com/read/28644841/low-dimensional-spike-rate-models-derived-from-networks-of-adaptive-integrate-and-fire-neurons-comparison-and-implementation
#5
Moritz Augustin, Josef Ladenbauer, Fabian Baumann, Klaus Obermayer
The spiking activity of single neurons can be well described by a nonlinear integrate-and-fire model that includes somatic adaptation. When exposed to fluctuating inputs sparsely coupled populations of these model neurons exhibit stochastic collective dynamics that can be effectively characterized using the Fokker-Planck equation. This approach, however, leads to a model with an infinite-dimensional state space and non-standard boundary conditions. Here we derive from that description four simple models for the spike rate dynamics in terms of low-dimensional ordinary differential equations using two different reduction techniques: one uses the spectral decomposition of the Fokker-Planck operator, the other is based on a cascade of two linear filters and a nonlinearity, which are determined from the Fokker-Planck equation and semi-analytically approximated...
June 23, 2017: PLoS Computational Biology
https://www.readbyqxmd.com/read/28644642/probing-electron-phonon-interaction-through-two-photon-interference-in-resonantly-driven-semiconductor-quantum-dots
#6
Antoine Reigue, Jake Iles-Smith, Fabian Lux, Léonard Monniello, Mathieu Bernard, Florent Margaillan, Aristide Lemaitre, Anthony Martinez, Dara P S McCutcheon, Jesper Mørk, Richard Hostein, Valia Voliotis
We investigate the temperature dependence of photon coherence properties through two-photon interference (TPI) measurements from a single quantum dot (QD) under resonant excitation. We show that the loss of indistinguishability is related only to the electron-phonon coupling and is not affected by spectral diffusion. Through these measurements and a complementary microscopic theory, we identify two independent separate decoherence processes, both of which are associated with phonons. Below 10 K, we find that the relaxation of the vibrational lattice is the dominant contribution to the loss of TPI visibility...
June 9, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28644246/effects-of-exercise-on-the-immune-function-of-pediatric-patients-with-solid-tumors-insights-from-the-papec-randomized-trial
#7
Carmen Fiuza-Luces, Julio R Padilla, Jaime Valentín, Elena Santana-Sosa, Alejandro Santos-Lozano, Fabián Sanchis-Gomar, Helios Pareja-Galeano, Javier S Morales, Steven J Fleck, Margarita Pérez, Alvaro Lassaletta, Luisa Soares-Miranda, Antonio Pérez-Martínez, Alejandro Lucia
The purpose of this study was to assess the effects of an in-hospital exercise intervention during neoadjuvant chemotherapy on the inflammatory profile and immune cell subpopulation in 20 children with solid tumors (control [n = 11] and exercise group [n = 9]). Although no significant interaction (group × time) effect was found with an analysis of variance test, we found a trend toward an interaction effect for natural killer cells expressing the immunoglobulin-like receptor KIR2DS4, with their numbers remaining stable in the exercise group but increasing in controls...
June 21, 2017: American Journal of Physical Medicine & Rehabilitation
https://www.readbyqxmd.com/read/28643678/prevalence-of-factors-related-to-vascular-calcifications-in-patients-with-chronic-kidney-disease-on-dialysis
#8
Guillermo Rosa-Diez, Griselda Bratti, Graciela Filannino, Adriana Peñalba, Fabián Otreras, Miriam Ledesma, Martín Ortemberg, Gustavo Laham, Mariana Vásquez-Durand, Soledad Crucelegui, Mariano Forrester, Carlos Musso, Marcelo Orias, Ricardo Heguilen, Carlos Díaz, Ricardo García-Mónaco, Oscar Velan, Hernán Trimarchi
The main aim of the study was to determine the prevalence of vascular calcifications in patients with chronic kidney disease on dialysis in our population assessed by X-ray. The secondary objectives were to determine the cardiovascular risk factors associated with the presence of vascular calcifications and to evaluate the complementary use of the echocardiogram in a cross-sectional, observational, multicentric study. We included patients with chronic kidney disease on dialysis, age =18 years with at least 3 months of renal replacement therapy in 8 dialysis centres in Argentina...
2017: Medicina
https://www.readbyqxmd.com/read/28642646/intensity-duration-and-type-of-physical-activity-required-to-improve-function-in-knee-osteoarthritis
#9
Ricardo Akihiro Kirihara, Fellipe Bravim Catelan, Fabiane Elize Sabino DE Farias, Cleidnéia Aparecida Clemente DA Silva, Claudia Helena DE Azevedo Cernigoy, Márcia Uchoa DE Rezende
OBJECTIVE: To evaluate the effects of physical activity intensity, type and duration in patients with knee osteoarthritis (KOA) . METHODS: A retrospective study of 195 KOA patients who were followed for two years after receiving educational material about KOA with or without attending classes. The patients were evaluated at baseline and 24 months. At the evaluations, the patients answered questionnaires pertaining to pain and function (WOMAC, Lequesne, VAS and SF-36); reported the intensity, duration and type of exercise performed per week; and performed the Timed Up & Go (TUG) and Five Times Sit-to-Stand (FTSST) tests ...
January 2017: Acta Ortopedica Brasileira
https://www.readbyqxmd.com/read/28640817/an-r-camp1-07-reporter-mouse-for-cell-type-specific-expression-of-a-sensitive-red-fluorescent-calcium-indicator
#10
Philipp Bethge, Stefano Carta, Dayra A Lorenzo, Ladan Egolf, Despoina Goniotaki, Linda Madisen, Fabian F Voigt, Jerry L Chen, Bernard Schneider, Masamichi Ohkura, Junichi Nakai, Hongkui Zeng, Adriano Aguzzi, Fritjof Helmchen
Genetically encoded calcium indicators (GECIs) enable imaging of in vivo brain cell activity with high sensitivity and specificity. In contrast to viral infection or in utero electroporation, indicator expression in transgenic reporter lines is induced noninvasively, reliably, and homogenously. Recently, Cre/tTA-dependent reporter mice were introduced, which provide high-level expression of green fluorescent GECIs in a cell-type-specific and inducible manner when crossed with Cre and tTA driver mice. Here, we generated and characterized the first red-shifted GECI reporter line of this type using R-CaMP1...
2017: PloS One
https://www.readbyqxmd.com/read/28640260/microscopy-of-the-interacting-harper-hofstadter-model-in-the-two-body-limit
#11
M Eric Tai, Alexander Lukin, Matthew Rispoli, Robert Schittko, Tim Menke, Dan Borgnia, Philipp M Preiss, Fabian Grusdt, Adam M Kaufman, Markus Greiner
The interplay between magnetic fields and interacting particles can lead to exotic phases of matter that exhibit topological order and high degrees of spatial entanglement. Although these phases were discovered in a solid-state setting, recent innovations in systems of ultracold neutral atoms-uncharged atoms that do not naturally experience a Lorentz force-allow the synthesis of artificial magnetic, or gauge, fields. This experimental platform holds promise for exploring exotic physics in fractional quantum Hall systems, owing to the microscopic control and precision that is achievable in cold-atom systems...
June 21, 2017: Nature
https://www.readbyqxmd.com/read/28639299/understanding-suicide-across-the-lifespan-a-united-states-perspective-of-suicide-risk-factors-assessment-management
#12
Ian H Steele, Natasha Thrower, Paul Noroian, Fabian M Saleh
Suicide is a troubling, preventable phenomenon. Prior to attempts, individuals often seek help, prompting practitioners to perform risk assessments that ideally use evidence-based risk management strategies. A literature review was performed using Harvard Countway Library of Medicine, Google Scholar, PubMed. Key words used were "Forensic Science," "Suicide Risk Management," "Pediatric Suicide Risk Factors," "Adult Suicide Risk Factors," "Geriatric Suicide Risk Factors," "Suicide Risk Assessment." Parameters limited articles to studies/reviews completed in the past twenty years in the United States...
June 21, 2017: Journal of Forensic Sciences
https://www.readbyqxmd.com/read/28639031/opioid-use-among-female-breast-cancer-patients-using-different-adjuvant-endocrine-therapy-regimens
#13
Xi Tan, Tareq Fabian Camacho, Virginia T LeBaron, Leslie J Blackhall, Rajesh Balkrishnan
PURPOSE: To explore differences in opioid use across different adjuvant endocrine therapy (AET) regimens, factors associated with opioid use, and the impact of opioid use on overall survival in female breast cancer patients treated with AET. METHODS: This retrospective study analyzed 2006-2012 SEER-Medicare datasets, following patients for at least two years from the index date, defined as the first date they filled an AET prescription. The study included adult women with incident, primary, hormone-receptor-positive, stage I-III breast cancer...
June 21, 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/28638112/the-structure-function-relationship-of-disulfide-bonds-in-etanercept
#14
William C Lamanna, Robert Ernst Mayer, Alfred Rupprechter, Michael Fuchs, Fabian Higel, Cornelius Fritsch, Cornelia Vogelsang, Andreas Seidl, Hansjoerg Toll, Martin Schiestl, Johann Holzmann
Etanercept is a TNFα receptor Fc fusion protein used for the treatment of rheumatic disease and psoriasis. Physicochemical and functional investigation of process fractions during development of the etanercept biosimilar GP2015 (Erelzi(®)) revealed a correlation between reduced potency and incorrect disulfide bridging between specific cysteines in the receptor domain. This novel structure-function relationship was found to be the molecular basis for reduced potency in recent Enbrel(®) batches, which exhibit higher levels of incorrect disulfide bridging...
June 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28637932/synergistic-immunotoxin-paclitaxel-combination-against-lymphoma
#15
Fabian Müller
No abstract text is available yet for this article.
June 13, 2017: Aging
https://www.readbyqxmd.com/read/28637572/investigating-cyclooxygenase-inhibition-in-a-rat-pulmonary-contusion-model-a-laboratory-study-finding-no-improvement-with-ibuprofen
#16
John P Sharpe, Nick R Khan, Arindam R Chatterjee, Jinsong Huang, Louis J Magnotti, Martin A Croce, Timothy C Fabian
Minimal advances have been made in the management of pulmonary contusions (PCs). The purpose of this study was to evaluate the impact of cyclooxygenase inhibition on outcomes following PC in a rat model. PC was induced in anesthetized adult rats. Ibuprofen was given to the treatment group (TG) and water was given to the control group (CG). Lung injury was assessed with pulse oximetry, arterial blood gases, CT, and histopathologic examination. Inflammation was measured with both serum and bronchoalveolar lavage (BAL) levels of tumor necrosis factor α and interleukin-6...
June 1, 2017: American Surgeon
https://www.readbyqxmd.com/read/28637066/-surgery-for-pulmonary-metastases-in-patients-with-advanced-soft-tissue-and-osteosarcomas
#17
Sascha Macherey, Khosro Hekmat, Kourosh Zarghooni, Fabian Doerr, Matthias Heldwein, Thorsten Wahlers
Background Advanced soft tissue or osteosarcoma is often associated with lung metastases. Curative pulmonary metastasectomy is appropriate for patients with successfully resected primary cancer who show no evidence of extrapulmonary metastases, with proven functional operability and completely resectable metastases. Material and Methods Systematic literature research and qualitative analysis of studies on patients undergoing lung metastasectomy after resection of primary sarcoma published since 01.01.2010. We assessed operative findings, survival data and prognostic factors...
June 21, 2017: Zeitschrift Für Orthopädie und Unfallchirurgie
https://www.readbyqxmd.com/read/28636753/stable-bromiranium-ions-with-weakly-coordinating-counterions-as-efficient-electrophilic-brominating-agents
#18
Christoph Ascheberg, Jonathan Bock, Florenz Buß, Christian Mück-Lichtenfeld, Constantin B Daniliuc, Klaus Bergander, Fabian Dielmann, Ulrich Hennecke
Electrophilic halogenating agents are an important class of reagents in chemical synthesis. Herein, we show that sterically demanding bromiranium ions with weakly coordinating counterions are highly reactive electrophilic brominating agents. Despite their high reactivity these reagents are stable, in one case even under ambient conditions and can be applied in electrophilic halogenations of alkenes as well as heteroatoms.
June 21, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28635955/corrigendum-double-flow-focused-liquid-injector-for-efficient-serial-femtosecond-crystallography
#19
Dominik Oberthuer, Juraj Knoška, Max O Wiedorn, Kenneth R Beyerlein, David A Bushnell, Elena G Kovaleva, Michael Heymann, Lars Gumprecht, Richard A Kirian, Anton Barty, Valerio Mariani, Aleksandra Tolstikova, Luigi Adriano, Salah Awel, Miriam Barthelmess, Katerina Dörner, P Lourdu Xavier, Oleksandr Yefanov, Daniel R James, Garrett Nelson, Dingjie Wang, George Calvey, Yujie Chen, Andrea Schmidt, Michael Szczepek, Stefan Frielingsdorf, Oliver Lenz, Edward Snell, Philip J Robinson, Božidar Šarler, Grega Belšak, Marjan Maček, Fabian Wilde, Andrew Aquila, Sébastien Boutet, Mengning Liang, Mark S Hunter, Patrick Scheerer, John D Lipscomb, Uwe Weierstall, Roger D Kornberg, John C H Spence, Lois Pollack, Henry N Chapman, Saša Bajt
This corrects the article DOI: 10.1038/srep44628.
June 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28635588/genome-sequence-variation-in-the-constricta-strain-dramatically-alters-the-protein-interaction-and-localization-map-of-potato-yellow-dwarf-virus
#20
Chanyong Jang, Renyuan Wang, Joseph Wells, Fabian Leon, Mark Farman, John Hammond, Michael M Goodin
The genome sequence of the constricta strain of Potato yellow dwarf virus (CYDV) was determined to be 12 792 nt long and organized into seven ORFs with the gene order 3'-N-X-P-Y-M-G-L-5', which encodes the nucleocapsid, phospho, movement, matrix, glyco, and RNA-dependent RNA polymerase proteins, respectively, except for X, which is of unknown function. Cloned ORFs for each gene, except L, were used to construct a protein interaction and localization map (PILM) for this virus, which shares greater than 80 % amino acid similarity in all ORFs except X and P with the sanguinolenta strain of this species (SYDV)...
June 21, 2017: Journal of General Virology
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