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https://www.readbyqxmd.com/read/28637283/an-essential-physiological-role-for-mct8-in-bone-in-male-mice
#1
Victoria D Leitch, Caterina Di Cosmo, Xiao-Hui Liao, Sam O'Boy, Thomas M Galliford, Holly Evans, Peter I Croucher, Alan Boyde, Alexandra Dumitrescu, Roy E Weiss, Samuel Refetoff, Graham R Williams, J H Duncan Bassett
T3 is an important regulator of skeletal development and adult bone maintenance. Thyroid hormone action requires efficient transport of T4 and T3 into target cells. We hypothesized that monocarboxylate transporter-8, encoded by Mct8 on the X-chromosome, is an essential thyroid hormone transporter in bone. To test this hypothesis, we determined the juvenile and adult skeletal phenotypes of male Mct8 knockout mice (Mct8KO) and Mct8D1D2KO compound mutants, which additionally lack the ability to convert the prohormone T4 to the active hormone T3...
June 15, 2017: Endocrinology
https://www.readbyqxmd.com/read/28637171/representation-of-rapid-image-sequences-in-v4-networks
#2
Jose A Fernandez-Leon, Bryan J Hansen, Valentin Dragoi
Natural viewing often consists of sequences of brief fixations to image patches of different structure. Whether and how briefly presented sequential stimuli are encoded in a temporal-position manner is poorly understood. Here, we performed multiple-electrode recordings in the visual cortex (area V4) of nonhuman primates (Macaca mulatta) viewing a sequence of 7 briefly flashed natural images, and measured correlations between the cue-triggered population response in the presence and absence of the stimulus. Surprisingly, we found significant correlations for images occurring at the beginning and the end of a sequence, but not for those in the middle...
June 20, 2017: Cerebral Cortex
https://www.readbyqxmd.com/read/28637055/a-pilot-study-on-professional-documentation-do-we-write-from-a-strengths-perspective
#3
Matthew J Braun, Winnie Dunn, Scott D Tomchek
Purpose: There is growing evidence supporting the use of strengths-based practices when serving families. The purpose of this study was to examine the use of strengths-based approaches in the context of written professional documentation. We specifically explored whether or not interdisciplinary clinicians in one university-based medical center clinic write from a strengths perspective (e.g., writing focuses on abilities rather than on deficits) when documenting child behavior in autism diagnostic clinics...
June 20, 2017: American Journal of Speech-language Pathology
https://www.readbyqxmd.com/read/28636936/strong-tcr%C3%AE-%C3%AE-signaling-prohibits-thymic-development-of-il-17a-secreting-%C3%AE-%C3%AE-t-cells
#4
Nital Sumaria, Capucine L Grandjean, Bruno Silva-Santos, Daniel J Pennington
Despite a growing appreciation of γδ T cell contributions to numerous immune responses, the mechanisms that underpin their thymic development remain poorly understood. Here, using precursor/product relationships, we identify thymic stages in two distinct developmental pathways that generate γδ T cells pre-committed to subsequent secretion of either IL-17A or IFNγ. Importantly, this framework for tracking γδ T cell development has permitted definitive assessment of TCRγδ signal strength in commitment to γδ T cell effector fate; increased TCRγδ signal strength profoundly prohibited the development of all IL-17A-secreting γδ T cells, regardless of Vγ usage, but promoted the development of γδ progenitors along the IFNγ pathway...
June 20, 2017: Cell Reports
https://www.readbyqxmd.com/read/28636887/temporal-dynamics-of-the-hpa-axis-linked-to-exploratory-behavior-in-a-wild-european-songbird-parus-major
#5
Alexander T Baugh, Sarah C Davidson, Michaela Hau, Kees van Oers
Variation in the reactivity of the endocrine stress axis is thought to underlie aspects of persistent individual differences in behavior (i.e. animal personality). Previous studies, however, have focused largely on estimating baseline or peak levels of glucocorticoids (CORT), often in captive animals. In contrast, the temporal dynamics of the HPA axis-how quickly it turns on and off, for example-may better indicate how an individual copes with stressors. Moreover, these HPA components might be correlated, thereby representing endocrine suites...
June 18, 2017: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/28636876/tissue-alignment-enhances-remodeling-potential-of-tendon-derived-cells-lessons-from-a-novel-microtissue-model-of-tendon-scarring
#6
Jasper Foolen, Stefania L Wunderli, Sandra Loerakker, Jess G Snedeker
Tendinopathy is a widespread and unresolved clinical challenge, in which associated pain and hampered mobility present a major cause for work-related disability. Tendinopathy associates with a change from a healthy tissue with aligned extracellular matrix (ECM) and highly polarized cells that are connected head-to-tail, towards a diseased tissue with a disorganized ECM and randomly distributed cells, scar-like features that are commonly attributed to poor innate regenerative capacity of the tissue. A fundamental clinical dilemma with this scarring process is whether treatment strategies should focus on healing the affected (disorganized) tissue or strengthen the remaining healthy (anisotropic) tissue...
June 18, 2017: Matrix Biology: Journal of the International Society for Matrix Biology
https://www.readbyqxmd.com/read/28636793/development-and-validation-of-ihs4-a-novel-dynamic-scoring-system-to-assess-hidradenitis-suppurativa-acne-inversa-severity
#7
C C Zouboulis, T Tzellos, A Kyrgidis, G B E Jemec, F G Bechara, E J Giamarellos-Bourboulis, J R Ingram, T Kanni, I Karagiannidis, A Martorell, Ł Matusiak, A Pinter, E P Prens, D Presser, S Schneider-Burrus, E von Stebut, J C Szepietowski, H H van der Zee, S M Wilden, R Sabat
BACKGROUND: A validated tool for the dynamic severity assessment of hidradenitis suppurativa (HS) is lacking. The aim of this study was to develop and validate such a novel scoring system. METHODS: A Delphi voting procedure was conducted among the members of the European Hidradenitis Suppurativa Foundation (EHSF) to achieve consensus towards an initial HS Severity Score System (HS4). Strengths and weaknesses of HS4 were examined by a multicenter prospective study...
June 21, 2017: British Journal of Dermatology
https://www.readbyqxmd.com/read/28636747/do-different-characteristics-of-two-emasculators-make-the-difference-in-equine-castration
#8
F Comino, G Giusto, V Caramello, M Gandini
BACKGROUND: Serra and Reimer emasculators are frequently used during equine orchiectomy. They differ in their jaw profile and haemostatic mechanism provided. OBJECTIVES: (1) To evaluate whether there is a difference between the haemostatic capacity of Reimer and Serra emasculators in open and closed castration and (2) compare haemostatic capacity of each emasculator in both open and closed castration; (3) to assess whether there is a difference in the tensile strength of the parietal tunic when using a Reimer emasculator or a Serra emasculator in closed castration...
June 21, 2017: Equine Veterinary Journal
https://www.readbyqxmd.com/read/28636681/thermally-induced-conformational-changes-and-protein-protein-interactions-of-bovine-serum-albumin-in-aqueous-solution-under-different-ph-and-ionic-strengths-as-revealed-by-saxs-measurements
#9
Dmitry Molodenskiy, Evgeny Shirshin, Tatiana Tikhonova, Andrey Gruzinov, Georgy Peters, Francesco Spinozzi
Thermal-induced conformational changes and protein-protein interactions of bovine serum albumin (BSA) in aqueous solution are assessed by small angle X-ray scattering (SAXS) at two pH values (7.4 and 9.0) and two ionic strengths (0.1 and 0.5). We demonstrate that Guinier analysis in two ranges of the modulus of the scattering vector allows protein melting and aggregation to be monitored simultaneously, thus providing insights into the mechanism of thermal-induced BSA aggregation. Results of the analysis suggest that at room temperature monomeric and dimeric BSA fractions are present in solution...
June 21, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28636669/exploring-factors-associated-with-art-adherence-and-retention-in-care-under-option-b-strategy-in-malawi-a-qualitative-study
#10
Salem Gugsa, Katy Potter, Hannock Tweya, Sam Phiri, Odala Sande, Pascal Sikwese, Janet Chikonda, Gabrielle O'Malley
Although several studies have documented challenges related to inadequate adherence to antiretroviral therapy (ART) and high loss to follow-up (LTFU) among Option B+ women, there is limited understanding of why these challenges occur and how to address them. This qualitative study examines women's experiences with ART adherence and retention in care. Between July and October 2015, in-depth interviews were conducted with 39 pregnant and lactating women who initiated ART at Bwaila Hospital in Lilongwe, Malawi...
2017: PloS One
https://www.readbyqxmd.com/read/28636564/radiation-dosimetry-in-magnetic-fields-with-farmer-type-ionization-chambers-determination-of-magnetic-field-correction-factors-for-different-magnetic-field-strengths-and-field-orientations
#11
Claudia Katharina Spindeldreier, Oliver Schrenk, Anna Bakenecker, Iwan Kawrakow, Lucas Norberto Burigo, Christian P Karger, Steffen Greilich, Asja Pfaffenberger
The aim of this work was to determine magnetic field correction factors that are needed for dosimetry in hybrid devices for MR-guided radiotherapy for Farmer-type ionization chambers for different magnetic field strengths and field orientations. The response of six custom-built Farmer-type chambers irradiated at a 6 MV linac was measured in a water tank positioned in a magnet with magnetic field strengths between 0.0 T and 1.1 T. Chamber axis, beam and magnetic field were perpendicular to each other and both magnetic field directions were investigated...
June 21, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28636505/the-effect-of-aerobic-interval-training-and-continuous-training-on-exercise-capacity-and-its-determinants
#12
Nele Pattyn, Paul J Beckers, Véronique A Cornelissen, Ellen Coeckelberghs, Catherine De Maeyer, Geert Frederix, Kaatje Goetschalckx, Nadine Possemiers, Dirk Schepers, Emeline M Van Craenenbroeck, Kurt Wuyts, Viviane M Conraads, Luc Vanhees
Objective We aimed to investigate (1) the effects of aerobic interval training (AIT) and aerobic continuous training (ACT) on (sub)maximal exercise measures and its determinants including endothelial function, muscle strength and cardiac autonomic function, and (2) the relationship between exercise capacity and these determinants. Methods Two-hundred coronary artery disease (CAD) patients (58.4 ± 9.1 years) were randomized to AIT or ACT for 12 weeks. All patients performed a cardiopulmonary exercise test and endothelial function measurements before and after the intervention; a subpopulation underwent muscle strength and heart rate variability (HRV) assessments...
March 21, 2017: Acta Cardiologica
https://www.readbyqxmd.com/read/28636479/decrements-in-knee-extensor-and-flexor-strength-are-associated-with-performance-fatigue-during-simulated-basketball-game-play-in-adolescent-male-players
#13
Aaron T Scanlan, Jordan L Fox, Nattai R Borges, Anne Delextrat, Tania Spiteri, Vincent J Dalbo, Robert Stanton, Crystal O Kean
This study quantified lower-limb strength decrements and assessed the relationships between strength decrements and performance fatigue during simulated basketball. Ten adolescent, male basketball players completed a circuit-based, basketball simulation. Sprint and jump performance were assessed during each circuit, with knee flexion and extension peak concentric torques measured at baseline, half-time, and full-time. Decrement scores were calculated for all measures. Mean knee flexor strength decrement was significantly (P < 0...
June 21, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28636435/effects-of-a-contrast-training-programme-on-jumping-sprinting-and-agility-performance-of-prepubertal-basketball-players
#14
Pedro Ángel Latorre Román, Francisco Javier Villar Macias, Felipe García Pinillos
The purpose of this study was to examine the effects of a 10 week contrast training (CT) programme (isometric + plyometric) on jumping, sprinting abilities and agility performance in prepubertal basketball players. Fifty-eight children from a basketball academy (age: 8.72 ± 0.97 years; body mass index: 17.22 ± 2.48 kg/m(2)) successfully completed the study. Participants were randomly assigned to experimental groups (EG, n = 30) and control groups (CG, n = 28). The CT programme was included in the experimental group's training sessions - twice a week - as part of their usual weekly training regime...
June 21, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28636356/biomimetic-architectured-graphene-aerogel-with-exceptional-strength-and-resilience
#15
Miao Yang, Nifang Zhao, Ying Cui, Weiwei Gao, Qian Zhao, Chao Gao, Hao Bai, Tao Xie
Materials combining lightweight, robust mechanical performances, and multifunctionality are highly desirable for engineering applications. Graphene aerogels have emerged as attractive candidates. Despite recent progresses, the bottleneck remains how to simultaneously achieve both strength and resilience. While multiscale architecture designs may offer a possible route, the difficulty lies in the lack of design guidelines and how to experimentally achieve the necessary structure control over multiple length scales...
June 21, 2017: ACS Nano
https://www.readbyqxmd.com/read/28636316/a-novel-melamine-o-phthalaldehyde-covalent-organic-frameworks-nanaosheets-enhancement-flame-retardant-and-mechanical-performances-of-thermoplastic-polyurethanes
#16
Xiaowei Mu, Jing Zhan, Xiaming Feng, Bihe Yuan, Shuilai Qiu, Lei Song, Yuan Hu
Covalent organic frameworks (COFs) nanosheets prepared from condensation reaction between melamine and o-phthalaldehyde are firstly prepared through ball milling and then incorporated into thermoplastic polyurethanes (TPU) by solution mixing. Transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared (FTIR) spectrometer are applied to characterize COFs nanosheets. It is observed apparently from TEM image that COFs nanosheets are obtained...
June 21, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28636081/cell-size-and-wall-dimensions-drive-distinct-variability-of-earlywood-and-latewood-density-in-northern-hemisphere-conifers
#17
Jesper Björklund, Kristina Seftigen, Fritz Schweingruber, Patrick Fonti, Georg von Arx, Marina V Bryukhanova, Henri E Cuny, Marco Carrer, Daniele Castagneri, David C Frank
Interannual variability of wood density - an important plant functional trait and environmental proxy - in conifers is poorly understood. We therefore explored the anatomical basis of density. We hypothesized that earlywood density is determined by tracheid size and latewood density by wall dimensions, reflecting their different functional tasks. To determine general patterns of variability, density parameters from 27 species and 349 sites across the Northern Hemisphere were correlated to tree-ring width parameters and local climate...
June 21, 2017: New Phytologist
https://www.readbyqxmd.com/read/28636029/cross-impact-of-surface-and-interaction-anisotropy-in-the-self-assembly-of-organic-adsorption-monolayers-a-monte-carlo-and-transfer-matrix-study
#18
V A Gorbunov, S S Akimenko, A V Myshlyavtsev
Using a simple lattice gas model we study the features of self-assembly in adsorption layers where both "molecule-surface" and "molecule-molecule" interactions are anisotropic. Based on the example of adsorption layers of mono-functional organic molecules on the heterogeneous surface with strip-like topography, we have revealed plenty of possible self-assembled structures in this simple system, such as discrete, linear, zigzag, chess board-like, two-dimensional porous and close-packed patterns. However, the phase behavior of the adsorption layer is much richer, if the interactions between functional and non-functional parts of adjacent adsorbed molecules have comparable strength and opposite signs...
June 21, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28635963/single-molecule-analysis-of-steroid-receptor-and-cofactor-action-in-living-cells
#19
Ville Paakinaho, Diego M Presman, David A Ball, Thomas A Johnson, R Louis Schiltz, Peter Levitt, Davide Mazza, Tatsuya Morisaki, Tatiana S Karpova, Gordon L Hager
Population-based assays have been employed extensively to investigate the interactions of transcription factors (TFs) with chromatin and are often interpreted in terms of static and sequential binding. However, fluorescence microscopy techniques reveal a more dynamic binding behaviour of TFs in live cells. Here we analyse the strengths and limitations of in vivo single-molecule tracking and performed a comprehensive analysis on the intranuclear dwell times of four steroid receptors and a number of known cofactors...
June 21, 2017: Nature Communications
https://www.readbyqxmd.com/read/28635681/antimicrobial-activity-of-nitric-oxide-releasing-ti-6al-4v-metal-oxide
#20
Nina A Reger, Wilson S Meng, Ellen S Gawalt
Titanium and titanium alloy materials are commonly used in joint replacements, due to the high strength of the materials. Pathogenic microorganisms can easily adhere to the surface of the metal implant, leading to an increased potential for implant failure. The surface of a titanium-aluminum-vanadium (Ti-6Al-4V) metal oxide implant material was functionalized to deliver an small antibacterial molecule, nitric oxide. S-nitroso-penicillamine, a S-nitrosothiol nitric oxide donor, was covalently immobilized on the metal oxide surface using self-assembled monolayers...
June 21, 2017: Journal of Functional Biomaterials
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