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https://www.readbyqxmd.com/read/28538050/molecular-imaging-of-acute-cardiac-transplant-rejection-animal-experiments-and-prospects
#1
Yihan Chen, Li Zhang, Jinfeng Liu, Pingyu Zhang, Xiaoyuan Chen, Mingxing Xie
Acute rejection (AR) remains the biggest challenge during the 1st year after heart transplantation despite advances in immunosuppressive therapy. The early detection and curbing of AR are crucial to the survival of transplant recipients. However, as the gold standard for AR, endomyocardial biopsy has several limitations because of its inherent invasiveness and morbidity. Traditional imaging techniques such as echocardiography and cardiac magnetic resonance imaging are of certain value for AR, but their diagnostic criteria and accuracy remain in question...
May 19, 2017: Transplantation
https://www.readbyqxmd.com/read/28537704/selective-etching-of-silicon-in-preference-to-germanium-and-si0-5ge0-5
#2
Christopher F Ahles, Jong Youn Choi, Steven F Wolf, Andrew C Kummel
The selective etching characteristics of silicon, germanium and Si0.5Ge0.5 subjected to a downstream H2/CF4/Ar plasma have been studied using a pair of in-situ quartz crystal microbalances (QCMs) and x-ray photoelectron spectroscopy (XPS). At 50 °C and 760 mTorr, Si may be etched in preference to Ge and Si0.5Ge0.5 with an essentially infinite Si:Ge etch rate ratio (ERR), while for Si:Si0.5Ge0.5, the ERR is also infinite at 22 °C and 760 mTorr. XPS data shows the selectivity is due to differential suppression of etching by a ~2 ML thick CxHyFz layer formed by the H2/CF4/Ar plasma on Si and Ge or Si0...
May 24, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28534844/property-analysis-of-the-real-time-uncalibrated-phase-delay-product-generated-by-regional-reference-stations-and-its-influence-on-precise-point-positioning-ambiguity-resolution
#3
Yong Zhang, Qing Wang, Xinyuan Jiang
The real-time estimation of the wide-lane and narrow-lane Uncalibrated Phase Delay (UPD) of satellites is realized by real-time data received from regional reference station networks; The properties of the real-time UPD product and its influence on real-time precise point positioning ambiguity resolution (RTPPP-AR) are experimentally analyzed according to real-time data obtained from the regional Continuously Operating Reference Stations (CORS) network located in Tianjin, Shanghai, Hong Kong, etc. The results show that the real-time wide-lane and narrow-lane UPD products differ significantly from each other in time-domain characteristics; the wide-lane UPDs have daily stability, with a change rate of less than 0...
May 19, 2017: Sensors
https://www.readbyqxmd.com/read/28534537/prostate-cancer-new-ar-co-regulator-with-dichotomous-functions
#4
Clemens Thoma
No abstract text is available yet for this article.
May 23, 2017: Nature Reviews. Urology
https://www.readbyqxmd.com/read/28534533/prostate-cancer-ar-mutations-in-plasma-dna-indicate-outcomes
#5
Peter Sidaway
No abstract text is available yet for this article.
May 23, 2017: Nature Reviews. Clinical Oncology
https://www.readbyqxmd.com/read/28533737/the-alpha-1a-adrenergic-receptor-agonist-a61603-reduces-cardiac-polyunsaturated-fatty-acid-and-endocannabinoid-metabolites-associated-with-inflammation-in-vivo
#6
Monte S Willis, Amro Ilaiwy, Megan D Montgomery, Paul C Simpson, Brian C Jensen
INTRODUCTION: Alpha-1-adrenergic receptors (α1-ARs) are G-protein coupled receptors (GPCRs) with three highly homologous subtypes (α1A, α1B, and α1D). Of these three subtypes, only the α1A and α1B are expressed in the heart. Multiple pre-clinical models of heart injury demonstrate cardioprotective roles for the α1A. Non-selective α1-AR activation promotes glycolysis in the heart, but the functional α1-AR subtype and broader metabolic effects have not been studied. OBJECTIVES: Given the high metabolic demands of the heart and previous evidence indicating benefit from α1A activation, we chose to investigate the effects of α1A activation on the cardiac metabolome in vivo...
October 2016: Metabolomics: Official Journal of the Metabolomic Society
https://www.readbyqxmd.com/read/28532596/costs-and-cost-efficacy-analysis-of-the-2017-gesida-spanish-national-aids-plan-recommended-guidelines-for-initial-antiretroviral-therapy-in-hiv-infected-adults
#7
Antonio Rivero, José Antonio Pérez-Molina, Antonio Javier Blasco, José Ramón Arribas, Víctor Asensi, Manuel Crespo, Pere Domingo, José Antonio Iribarren, Pablo Lázaro, José López-Aldeguer, Fernando Lozano, Esteban Martínez, Santiago Moreno, Rosario Palacios, Juan Antonio Pineda, Federico Pulido, Rafael Rubio, Jesús Santos, Javier de la Torre, Montserrat Tuset, Josep M Gatell
INTRODUCTION: GESIDA and the Spanish National AIDS Plan panel of experts have recommended preferred (PR), alternative (AR) and other regimens (OR) for antiretroviral therapy (ART) as initial therapy in HIV-infected patients for 2017. The objective of this study was to evaluate the costs and the efficiency of initiating treatment with PR and AR. METHODS: Economic assessment of costs and efficiency (cost-efficacy) based on decision tree analyses. Efficacy was defined as the probability of reporting a viral load <50copies/mL at week 48, in an intention-to-treat analysis...
May 19, 2017: Enfermedades Infecciosas y Microbiología Clínica
https://www.readbyqxmd.com/read/28532204/management-of-allergic-rhinitis-in-the-era-of-effective-over-the-counter-treatments
#8
Warner W Carr, Barbara P Yawn
Allergic rhinitis (AR) may be regarded as a trivial issue unworthy of the doctor's time, and with the availability of many different over-the-counter (OTC) treatments, up to two thirds of patients self-manage AR before seeking medical care. Yet, AR can have a significant impact on health-related quality of life and is associated with a greater detriment to work productivity than other chronic diseases such as diabetes and hypertension. For many patients, the impact on quality of life is greater than suggested by reported symptoms and should also be a focus of treatment...
May 22, 2017: Postgraduate Medicine
https://www.readbyqxmd.com/read/28531880/controlled-release-of-moxifloxacin-from-intraocular-lenses-modified-by-ar-plasma-assisted-grafting-with-amps-or-sbma-an-in-vitro-study
#9
A F R Pimenta, A P Vieira, R Colaço, B Saramago, M H Gil, P Coimbra, P Alves, D Bozukova, T R Correia, I J Correia, A J Guiomar, A P Serro
Intraocular lenses (IOLs) present an alternative for extended, local drug delivery in the prevention of post-operative acute endophthalmitis. In the present work, we modified the surface of a hydrophilic acrylic material, used for manufacturing of IOLs, through plasma-assisted grafting copolymerization of 2-acrylamido-2-methylpropane sulfonic acid (AMPS) or [2-(methacryloyloxy)ethyl]dimethyl-(3-sulfopropyl)ammonium hydroxide (SBMA), with the aim of achieving a controlled and effective drug release. The material was loaded with moxifloxacin (MFX), a commonly used antibiotic for endophthalmitis prevention...
May 1, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28530711/a-combinatorial-screen-of-the-cloud-uncovers-a-synergy-targeting-the-androgen-receptor
#10
Marco P Licciardello, Anna Ringler, Patrick Markt, Freya Klepsch, Charles-Hugues Lardeau, Sara Sdelci, Erika Schirghuber, André C Müller, Michael Caldera, Anja Wagner, Rebecca Herzog, Thomas Penz, Michael Schuster, Bernd Boidol, Gerhard Dürnberger, Yasin Folkvaljon, Pär Stattin, Vladimir Ivanov, Jacques Colinge, Christoph Bock, Klaus Kratochwill, Jörg Menche, Keiryn L Bennett, Stefan Kubicek
Approved drugs are invaluable tools to study biochemical pathways, and further characterization of these compounds may lead to repurposing of single drugs or combinations. Here we describe a collection of 308 small molecules representing the diversity of structures and molecular targets of all FDA-approved chemical entities. The CeMM Library of Unique Drugs (CLOUD) covers prodrugs and active forms at pharmacologically relevant concentrations and is ideally suited for combinatorial studies. We screened pairwise combinations of CLOUD drugs for impairment of cancer cell viability and discovered a synergistic interaction between flutamide and phenprocoumon (PPC)...
May 22, 2017: Nature Chemical Biology
https://www.readbyqxmd.com/read/28529484/targeting-adenosine-receptors-for-the-treatment-of-cardiac-fibrosis
#11
REVIEW
Elizabeth A Vecchio, Paul J White, Lauren T May
Adenosine is a ubiquitous molecule with key regulatory and cytoprotective mechanisms at times of metabolic imbalance in the body. Among a plethora of physiological actions, adenosine has an important role in attenuating ischaemia-reperfusion injury and modulating the ensuing fibrosis and tissue remodeling following myocardial damage. Adenosine exerts these actions through interaction with four adenosine G protein-coupled receptors expressed in the heart. The adenosine A2B receptor (A2BAR) is the most abundant adenosine receptor (AR) in cardiac fibroblasts and is largely responsible for the influence of adenosine on cardiac fibrosis...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28529472/a-comparative-study-of-average-linked-mastoid-and-rest-references-for-erp-components-acquired-during-fmri
#12
Ping Yang, Chenggui Fan, Min Wang, Ling Li
In simultaneous electroencephalogram (EEG) and functional magnetic resonance imaging (fMRI) studies, average reference (AR), and digitally linked mastoid (LM) are popular re-referencing techniques in event-related potential (ERP) analyses. However, they may introduce their own physiological signals and alter the EEG/ERP outcome. A reference electrode standardization technique (REST) that calculated a reference point at infinity was proposed to solve this problem. To confirm the advantage of REST in ERP analyses of synchronous EEG-fMRI studies, we compared the reference effect of AR, LM, and REST on task-related ERP results of a working memory task during an fMRI scan...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28529157/protective-treatments-and-their-target-retinal-ganglion-cells-in-diabetic-retinopathy
#13
REVIEW
Jing Zhang, Rong Liu, Hong-Yu Kuang, Xin-Yuan Gao, Hao-Ling Liu
Diabetic retinopathy(DR)is one of the complications of diabetes which could cause severe vision loss. Retinal ganglion cell(RGC)injury has been confirmed prior to micro-vascular damage. Over the past few decades, a number of animal and clinical studies have confirmed that RGC impairment leads to an early deterioration of vision in DR. Inhibition of aldose reductase (AR), advanced glycation end product (AGE), oxidative stress, glutamate toxicity, and an inflammatory response may play important roles in protecting RGCs in DR...
May 18, 2017: Brain Research Bulletin
https://www.readbyqxmd.com/read/28528814/preclinical-study-using-malat1-small-interfering-rna-or-androgen-receptor-splicing-variant-7-degradation-enhancer-asc-j9-%C3%A2-to-suppress-enzalutamide-resistant-prostate-cancer-progression
#14
Ronghao Wang, Yin Sun, Lei Li, Yuanjie Niu, Wanying Lin, Changyi Lin, Emmanuel S Antonarakis, Jun Luo, Shuyuan Yeh, Chawnshang Chang
BACKGROUND: While androgen-deprivation-therapy with the recently developed antiandrogen enzalutamide (Enz) shows promising therapeutic benefits in men with metastatic castration-resistant prostate cancer (PCa), many patients develop resistance to Enz, which may involve the induction of the androgen receptor (AR) splicing variant 7 (AR-v7). OBJECTIVE: Our aim is to identify the mechanisms responsible for AR-v7 production and to develop novel preclinical approaches to suppress the Enz-resistant (EnzR) PCa...
May 18, 2017: European Urology
https://www.readbyqxmd.com/read/28527465/super-and-sub-lorentzian-effects-in-the-ar-broadened-line-wings-of-hcl-gas
#15
Ha Tran, Gang Li, Volker Ebert, Jean-Michel Hartmann
Using previously recorded spectra of HCl diluted in Ar gas at room temperature for several pressure conditions, we show that the absorptions in between successive P and R transitions are significantly different from those predicted using purely Lorentzian line shapes. Direct theoretical predictions of the spectra are also made using requantized classical molecular dynamics simulations and an input HCl-Ar interaction potential. They provide the time evolution of the dipole auto-correlation function (DAF) whose Fourier-Laplace transform yields the absorption spectrum...
May 21, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28527407/mechanisms-of-resistance-to-systemic-therapy-in-metastatic-castration-resistant-prostate-cancer
#16
REVIEW
Giuseppe Galletti, Benjamin I Leach, Linda Lam, Scott T Tagawa
Patients with metastatic castration-resistant prostate cancer (mCPRC) now have an unprecedented number of approved treatment options, including chemotherapies (docetaxel, cabazitaxel), androgen receptor (AR)-targeted therapies (enzalutamide, abiraterone), a radioisotope (radium-223) and a cancer vaccine (sipuleucel-T). However, the optimal treatment sequencing pathway is unknown, and this problem is exacerbated by the issues of primary and acquired resistance. This review focuses on mechanisms of resistance to AR-targeted therapies and taxane-based chemotherapy...
May 8, 2017: Cancer Treatment Reviews
https://www.readbyqxmd.com/read/28526624/guideline-recommendations-on-the-use-of-allergen-immunotherapy-in-house-dust-mite-allergy-time-for-a-change
#17
Moisés A Calderón, Jean Bousquet, G Walter Canonica, Lars-Olaf Cardell, Dolores Hernandez Fernandez de Rojas, Jörg Kleine-Tebbe, Pascal Demoly
Guidelines on the treatment of asthma, allergic rhinitis (AR) and allergen immunotherapy (AIT) lack recommendations for house dust mite (HDM) allergy. An expert panel reviewed current guidelines in the light of new data, to assess whether guidelines could be improved. Most guidelines and key position papers did not provide specific recommendations on treatment of allergic asthma (AA) caused by HDM allergy, although some included AIT as a treatment option for AA in general. Around half of the guidelines stated that AIT with HDM extract was an effective treatment for AR, with several indicating sublingual immunotherapy (SLIT) as an option...
May 16, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28524808/determination-of-safe-and-critical-nanoparticles-exposure-to-welders-in-a-workshop
#18
J F Gomes, R M Miranda
The present study examined consequences of "safe" versus "critical" exposure to nanoparticles (NP) released during welding operations. With this aim in mind, a set of measurements regarding NP emissions was undertaken in a workshop during welding by metal active gas of carbon steel using different mixtures of argon (Ar) and carbon dioxide (CO2) as well as different process parameters which might influence emission of (NP). If these measurements were conducted in several locations away from the welding sources, the graphical representation of the obtained observations with time enabled definition of "safe" and "critical" regions within a welding workshop in terms of welder's exposure...
May 19, 2017: Journal of Toxicology and Environmental Health. Part A
https://www.readbyqxmd.com/read/28523947/potentiation-of-trap-6-induced-platelet-dense-granule-release-by-blockade-of-p2y12-signaling-with-mrs2395
#19
Annachiara Mitrugno, Rachel A Rigg, Nicole B Laschober, Anh T P Ngo, Jiaqing Pang, Craig D Williams, Joseph E Aslan, Owen J T McCarty
The release of ADP from platelet dense granules and its binding to platelet P2Y12 receptors is key to amplifying the initial hemostatic response and propagating thrombus formation. P2Y12 has thus emerged as a therapeutic target to safely and effectively prevent secondary thrombotic events in patients with acute coronary syndrome or a history of myocardial infarction. Pharmacological inhibition of P2Y12 receptors represents a useful approach to better understand the signaling mediated by these receptors and to elucidate the role of these receptors in a multitude of platelet hemostatic and thrombotic responses...
May 19, 2017: Platelets
https://www.readbyqxmd.com/read/28523728/lewis-base-mediated-silylations-of-alcohols-asymmetric-synthesis-of-chiral-organosilicon-compounds-controlled-by-chiral-ar-binmols
#20
Li-Wen Xu
In the past years, successful stereoselective functionalizations of hydroxyl groups of alcohol substrates with chlorosilanes have evolved silyl ether formation from a functional group protection to an enantioselective synthetic strategy. In this work, a family of structurally specific chiral diols, chiral 1,1'-binaphthalene-2--arylmethanol-2'-ol (Ar-BINMOL), -controlled desymmetrization of dichlorosilanes is presented, which led to the facile construction of desired silicon-stereogenic organosilicon compounds with high yields and good diastereoselectivities...
May 18, 2017: Chemistry, An Asian Journal
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