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https://www.readbyqxmd.com/read/27926984/involvement-of-chemokine-cxcl11-in-the-development-of-morphine-tolerance-in-rats-with-cancer-induced-bone-pain
#1
Genhua Guo, Yawen Peng, Bingrui Xiong, Daiqiang Liu, Huilian Bu, Xuebi Tian, Hui Yang, Zhen Wu, Fei Cao, Feng Gao
Morphine is viewed as one of the classical treatments for intractable pain, but its role is limited by side effects, including analgesic tolerance. A few chemokines have been reported to be engaged in the mechanisms of morphine tolerance. However, the exact roles of CXCL11 in chronic morphine tolerance remain unknown. In this study, Walker 256 mammary gland carcinoma cells were inoculated into the tibia of rats to provoke cancer-induced bone pain (CIBP). Then morphine was intrathecally administered twice daily for 7 consecutive days to induce drug tolerance...
December 7, 2016: Journal of Neurochemistry
https://www.readbyqxmd.com/read/27926887/the-application-of-genomics-in-diabetes-barriers-to-discovery-and-implementation
#2
James S Floyd, Bruce M Psaty
The emerging availability of genomic and electronic health data in large populations is a powerful tool for research that has drawn interest in bringing precision medicine to diabetes. In this article, we discuss the potential application of genomics to the prediction, prevention, and treatment of diabetes, and we use examples from other areas of medicine to illustrate some of the challenges involved in conducting genomics research in human populations and implementing findings in practice. At this time, a major barrier to the application of genomics in diabetes care is the lack of actionable genomic findings...
November 2016: Diabetes Care
https://www.readbyqxmd.com/read/27926854/structural-characterization-and-statistical-mechanical-model-of-epidermal-patterns
#3
Duyu Chen, Wen Yih Aw, Danelle Devenport, Salvatore Torquato
In proliferating epithelia of mammalian skin, cells of irregular polygon-like shapes pack into complex, nearly flat two-dimensional structures that are pliable to deformations. In this work, we employ various sensitive correlation functions to quantitatively characterize structural features of evolving packings of epithelial cells across length scales in mouse skin. We find that the pair statistics in direct space (correlation function) and Fourier space (structure factor) of the cell centroids in the early stages of embryonic development show structural directional dependence (statistical anisotropy), which is a reflection of the fact that cells are stretched, which promotes uniaxial growth along the epithelial plane...
December 6, 2016: Biophysical Journal
https://www.readbyqxmd.com/read/27926847/probing-lipid-bilayers-under-ionic-imbalance
#4
Jiaqi Lin, Alfredo Alexander-Katz
Biological membranes are normally under a resting transmembrane potential (TMP), which originates from the ionic imbalance between extracellular fluids and cytosols, and serves as electric power storage for cells. In cell electroporation, the ionic imbalance builds up a high TMP, resulting in the poration of cell membranes. However, the relationship between ionic imbalance and TMP is not clearly understood, and little is known about the effect of ionic imbalance on the structure and dynamics of biological membranes...
December 6, 2016: Biophysical Journal
https://www.readbyqxmd.com/read/27926839/circular-dichroism-spectroscopy-of-collagen-fibrillogenesis-a-new-use-for-an-old-technique
#5
Kathryn E Drzewiecki, Daniel R Grisham, Avanish S Parmar, Vikas Nanda, David I Shreiber
Type-I collagen assembles in a stepwise, hierarchic fashion from the folding of the triple helix to the assembly of fibrils into fibers. The mature assembled fibers are crucial for tissue structure and mechanics, cell interactions, and other functions in vivo. Although triple helix folding can be followed with the use of optical methods such as circular dichroism (CD) spectroscopy, fibrillogenesis is typically measured by alternative methods such as turbidity, rheology, and microscopy. Together, these approaches allow for investigation of the mechanical properties and architectures of collagen-based scaffolds and excised tissues...
December 6, 2016: Biophysical Journal
https://www.readbyqxmd.com/read/27926740/a-17-gene-stemness-score-for-rapid-determination-of-risk-in-acute-leukaemia
#6
Stanley W K Ng, Amanda Mitchell, James A Kennedy, Weihsu C Chen, Jessica McLeod, Narmin Ibrahimova, Andrea Arruda, Andreea Popescu, Vikas Gupta, Aaron D Schimmer, Andre C Schuh, Karen W Yee, Lars Bullinger, Tobias Herold, Dennis Görlich, Thomas Büchner, Wolfgang Hiddemann, Wolfgang E Berdel, Bernhard Wörmann, Meyling Cheok, Claude Preudhomme, Herve Dombret, Klaus Metzeler, Christian Buske, Bob Löwenberg, Peter J M Valk, Peter W Zandstra, Mark D Minden, John E Dick, Jean C Y Wang
Refractoriness to induction chemotherapy and relapse after achievement of remission are the main obstacles to cure in acute myeloid leukaemia (AML). After standard induction chemotherapy, patients are assigned to different post-remission strategies on the basis of cytogenetic and molecular abnormalities that broadly define adverse, intermediate and favourable risk categories. However, some patients do not respond to induction therapy and another subset will eventually relapse despite the lack of adverse risk factors...
December 7, 2016: Nature
https://www.readbyqxmd.com/read/27926647/central-fetal-monitoring-with-and-without-computer-analysis-a-randomized-controlled-trial
#7
Inês Nunes, Diogo Ayres-de-Campos, Austin Ugwumadu, Pina Amin, Philip Banfield, Antony Nicoll, Simon Cunningham, Paulo Sousa, Cristina Costa-Santos, João Bernardes
OBJECTIVE: To evaluate whether intrapartum fetal monitoring with computer analysis and real-time alerts decreases the rate of newborn metabolic acidosis or obstetric intervention when compared with visual analysis. METHODS: A randomized clinical trial carried out in five hospitals in the United Kingdom evaluated women with singleton, vertex fetuses of 36 weeks of gestation or greater during labor. Continuous central fetal monitoring by computer analysis and online alerts (experimental arm) was compared with visual analysis (control arm)...
December 2, 2016: Obstetrics and Gynecology
https://www.readbyqxmd.com/read/27926645/association-between-sleep-disordered-breathing-and-hypertensive-disorders-of-pregnancy-and-gestational-diabetes-mellitus
#8
Francesca L Facco, Corette B Parker, Uma M Reddy, Robert M Silver, Matthew A Koch, Judette M Louis, Robert C Basner, Judith H Chung, Chia-Ling Nhan-Chang, Grace W Pien, Susan Redline, William A Grobman, Deborah A Wing, Hyagriv N Simhan, David M Haas, Brian M Mercer, Samuel Parry, Daniel Mobley, Shannon Hunter, George R Saade, Frank P Schubert, Phyllis C Zee
OBJECTIVE: To estimate whether sleep-disordered breathing during pregnancy is a risk factor for the development of hypertensive disorders of pregnancy and gestational diabetes mellitus (GDM). METHODS: In this prospective cohort study, nulliparous women underwent in-home sleep-disordered breathing assessments in early (6-15 weeks of gestation) and midpregnancy (22-31 weeks of gestation). Participants and health care providers were blinded to the sleep test results...
December 2, 2016: Obstetrics and Gynecology
https://www.readbyqxmd.com/read/27926484/high-lncrna-h19-expression-as-prognostic-indicator-data-mining-in-female-cancers-and-polling-analysis-in-non-female-cancers
#9
Li Peng, Xiao-Qing Yuan, Zhao-Yang Liu, Wen-Ling Li, Chao-Yang Zhang, Ya-Qin Zhang, Xi Pan, Jun Chen, Yue-Hui Li, Guan-Cheng Li
Upregulation of lncRNA H19 expression is associated with an unfavorable prognosis in some cancers. However, the prognostic value of H19 in female-specific cancers has remained uncharacterized. In this study, the prognostic power of high H19 expression in female cancer patients from the TCGA datasets was analyzed using Kaplan-Meier survival curves and Cox's proportional hazard modeling. In addition, in a meta-analysis of non-female cancer patients from TCGA datasets and 12 independent studies, hazard ratios (HRs) with 95% confidence interval (CI) for overall survival (OS) and disease-free survival (DFS)/relapse-free survival (RFS)/metastasis-free survival (MFS)/progression-free survival (PFS) were pooled to assess the prognostic value of high H19 expression...
December 1, 2016: Oncotarget
https://www.readbyqxmd.com/read/27926432/pathogen-and-particle-associations-in-wastewater-significance-and-implications-for-treatment-and-disinfection-processes
#10
C Chahal, B van den Akker, F Young, C Franco, J Blackbeard, P Monis
Disinfection guidelines exist for pathogen inactivation in potable water and recycled water, but wastewater with high numbers of particles can be more difficult to disinfect, making compliance with the guidelines problematic. Disinfection guidelines specify that drinking water with turbidity ≥1 Nephelometric Turbidity Units (NTU) is not suitable for disinfection and therefore not fit for purpose. Treated wastewater typically has higher concentrations of particles (1-10NTU for secondary treated effluent). Two processes widely used for disinfecting wastewater are chlorination and ultraviolet radiation...
2016: Advances in Applied Microbiology
https://www.readbyqxmd.com/read/27925773/post-translational-modifications-of-lipid-activated-nuclear-receptors-focus-on-metabolism
#11
Natalia Becares Salles, Matthew C Gage, Inés Pineda-Torra
Post-translational modifications (PTM) occur to nearly all proteins, are catalysed by specific enzymes and are subjected to tight regulation. They have been shown to be a powerful means by which the function of proteins can be modified resulting in diverse effects. Technological advances such as the increased sensitivity of mass spectrometry-based techniques and availability of mutant animal models have enhanced our understanding of the complexities of their regulation and the effect they have on protein function...
December 7, 2016: Endocrinology
https://www.readbyqxmd.com/read/27925736/electron-cooling-in-a-magnetically-expanding-plasma
#12
J M Little, E Y Choueiri
Electron cooling in a magnetically expanding plasma, which is a fundamental process for plasma flow and detachment in magnetic nozzles, is experimentally investigated using a radio frequency plasma source and magnetic nozzle (MN). Probe measurements of the plasma density, potential, and electron temperature along the center line of the MN indicate that the expansion follows a polytropic law with exponent γ_{e}=1.15±0.03. This value contradicts isothermal electron expansion, γ_{e}=1, which is commonly assumed in MN models...
November 25, 2016: Physical Review Letters
https://www.readbyqxmd.com/read/27925735/continuous-time-discrete-distribution-theory-for-activity-driven-networks
#13
Lorenzo Zino, Alessandro Rizzo, Maurizio Porfiri
Activity-driven networks are a powerful paradigm to study epidemic spreading over time-varying networks. Despite significant advances, most of the current understanding relies on discrete-time computer simulations, in which each node is assigned an activity potential from a continuous distribution. Here, we establish a continuous-time discrete-distribution framework toward an analytical treatment of the epidemic spreading, from its onset to the endemic equilibrium. In the thermodynamic limit, we derive a nonlinear dynamical system to accurately model the epidemic spreading and leverage techniques from the fields of differential inclusions and adaptive estimation to inform short- and long-term predictions...
November 25, 2016: Physical Review Letters
https://www.readbyqxmd.com/read/27925729/curvature-induced-asymmetric-spin-wave-dispersion
#14
Jorge A Otálora, Ming Yan, Helmut Schultheiss, Riccardo Hertel, Attila Kákay
In magnonics, spin waves are conceived of as electron-charge-free information carriers. Their wave behavior has established them as the key elements to achieve low power consumption, fast operative rates, and good packaging in magnon-based computational technologies. Hence, knowing alternative ways that reveal certain properties of their undulatory motion is an important task. Here, we show using micromagnetic simulations and analytical calculations that spin-wave propagation in ferromagnetic nanotubes is fundamentally different than in thin films...
November 25, 2016: Physical Review Letters
https://www.readbyqxmd.com/read/27925721/schur-complement-inequalities-for-covariance-matrices-and-monogamy-of-quantum-correlations
#15
Ludovico Lami, Christoph Hirche, Gerardo Adesso, Andreas Winter
We derive fundamental constraints for the Schur complement of positive matrices, which provide an operator strengthening to recently established information inequalities for quantum covariance matrices, including strong subadditivity. This allows us to prove general results on the monogamy of entanglement and steering quantifiers in continuous variable systems with an arbitrary number of modes per party. A powerful hierarchical relation for correlation measures based on the log-determinant of covariance matrices is further established for all Gaussian states, which has no counterpart among quantities based on the conventional von Neumann entropy...
November 25, 2016: Physical Review Letters
https://www.readbyqxmd.com/read/27925720/universal-off-equilibrium-scaling-of-critical-cumulants-in-the-qcd-phase-diagram
#16
Swagato Mukherjee, Raju Venugopalan, Yi Yin
Exploiting the universality between the QCD critical point and the three-dimensional Ising model, closed form expressions derived for nonequilibrium critical cumulants on the crossover side of the critical point reveal that they can differ in both magnitude and sign from equilibrium expectations. We demonstrate here that key elements of the Kibble-Zurek framework of nonequilibrium phase transitions can be employed to describe the dynamics of these critical cumulants. Our results suggest that observables sensitive to critical dynamics in heavy-ion collisions should be expressible as universal scaling functions, thereby providing powerful model-independent guidance in searches for the QCD critical point...
November 25, 2016: Physical Review Letters
https://www.readbyqxmd.com/read/27925713/ramsey-interference-with-single-photons
#17
Stéphane Clemmen, Alessandro Farsi, Sven Ramelow, Alexander L Gaeta
Interferometry using discrete energy levels of nuclear, atomic, or molecular systems is the foundation for a wide range of physical phenomena and enables powerful techniques such as nuclear magnetic resonance, electron spin resonance, Ramsey-based spectroscopy, and laser or maser technology. It also plays a unique role in quantum information processing as qubits may be implemented as energy superposition states of simple quantum systems. Here, we demonstrate quantum interference involving energy states of single quanta of light...
November 25, 2016: Physical Review Letters
https://www.readbyqxmd.com/read/27925703/are-first-trimester-nuchal-septations-independent-risk-factors-for-chromosomal-anomalies
#18
Lauren M Mack, Wesley Lee, Joan M Mastrobattista, Michael A Belfort, Ignatia B Van den Veyver, Alireza A Shamshirsaz, Rodrigo Ruano, Magdalena Sanz Cortes, Andres Espinoza, Arame Thiam Diouf, Jimmy Espinoza
OBJECTIVES: There is conflicting information regarding the role of nuchal septations during first-trimester genetic screening. This study was designed to determine whether nuchal septations are risk factors for chromosomal anomalies, independent of increased nuchal translucency (NT), in the first trimester of pregnancy. METHODS: This retrospective cohort study included all women who underwent first-trimester genetic screening between November 2011 and December 2014...
November 28, 2016: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/27925702/quantitative-elastosonography-of-the-myotendinous-junction-normal-behavior-and-correlation-with-a-standard-measurement-system-during-functional-tests
#19
Paolo Minafra, Chandra Bortolotto, Ermanno Rampinini, Fabrizio Calliada, Giuseppe Monetti
OBJECTIVES: In recent years, an increasing need to use imaging to assess normal and adaptive muscle function, in addition to its anatomy and structure, has emerged. We evaluated the myotendinous junction's elastosonographic behavior in light of the most recent literature on its physiologic behavior. The elastosonographic studies were compared with the results obtained from a standard measurement system to ensure a correlation with maximal muscle contraction. METHODS: Nineteen male professional soccer players were assessed during functional tests...
November 30, 2016: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/27925701/effect-of-precompression-on-the-power-doppler-assessment-of-breast-lesion-vascularity
#20
Robert DeVita, Richard G Barr
OBJECTIVES: To evaluate the effect of precompression on power Doppler visualization of blood flow in breast masses. METHODS: This Institutional Review Board-approved and Health Insurance Portability and Accountability Act-compliant study evaluated 30 patients with breast masses (16 benign and 14 malignant) undergoing ultrasound-guided breast biopsy. A computational mathematics program was used to calculate the number of color pixels in a region of interest at various degrees of compression of the breast by the transducer...
November 30, 2016: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
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