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https://www.readbyqxmd.com/read/29346846/legislative-norms-to-control-cannabis-use-in-the-light-of-its-prevalence-in-czech-republic-poland-slovakia-and-hungary
#1
Róbert Čecho, Tibor Baška, Viera Švihrová, Henrieta Hudečková
No abstract text is available yet for this article.
December 2017: Central European Journal of Public Health
https://www.readbyqxmd.com/read/29346736/light-activatable-red-blood-cell-membrane-camouflaged-dimeric-prodrug-nanoparticles-for-synergistic-photodynamic-chemotherapy
#2
Qing Pei, Xiuli Hu, Xiaohua Zheng, Shi Liu, Yawei Li, Xiabin Jing, Zhigang Xie
Biomimetic approach offers numerous opportunities to design therapeutic platforms with enhanced antitumor performance and biocompatibility. Herein we report a novel red blood cell membrane-camouflaged nanoparticle (RBC(M(TPC-PTX))) for synergistic chemo- and photodynamic therapy (PDT). Specifically, the inner core is mainly constructed by reactive oxygen species (ROS)-responsive PTX dimer (PTX2-TK) and photosensitizer 5,10,15,20-tetraphenylchlorin (TPC). In vitro experiments show that the prepared RBC(M(TPC-PTX)) is readily taken up into endosomes...
January 18, 2018: ACS Nano
https://www.readbyqxmd.com/read/29346724/structural-and-biophysical-characterization-of-human-extl3-domain-organisation-glycosylation-and-solution-structure
#3
Wael Awad, Sven Kjellstrom, Gabriel Svensson Birkedal, Katrin Mani, Derek Thomas Logan
Heparan sulfate proteoglycans are proteins substituted with one or more heparan sulfate (HS) polysaccharides, found in abundance at cell surfaces. HS chains influence the activity of many biologically important molecules involved in cellular communication and signaling. The exostosin (EXT) proteins are glycosyltransferases in the Golgi apparatus that assemble HS chains on HSPGs. The EXTL3 enzyme mainly works as an initiator in HS biosynthesis. In this work, human lumenal N-glycosylated EXTL3 (EXTL3ΔN) was cloned, expressed in human embryonic kidney cells and purified...
January 18, 2018: Biochemistry
https://www.readbyqxmd.com/read/29346720/nanoscale-control-of-molecular-self-assembly-induced-by-plasmonic-hot-electron-dynamics
#4
Sabrina Simoncelli, Yi Li, Emiliano Cortes, Stefan A Maier
Self-assembly processes allow designing and creating complex nanostructures using molecules as building blocks and surfaces as scaffolds. This autonomous driven construction is possible due to a complex thermodynamic balance of molecule-surface interactions. As such, nanoscale guidance and control over this process is hard to achieve. Here we use the highly localized light-to-chemical-energy conversion of plasmonic materials to spatially cleave Au-S bonds on pre-determined locations within a single nanoparticle, enabling a high degree of control over this archetypal system for molecular self-assembly...
January 18, 2018: ACS Nano
https://www.readbyqxmd.com/read/29346683/strigolactones-mediators-of-osmotic-stress-responses-with-a-potential-for-agrochemical-manipulation-of-crop-resilience
#5
Francesca Cardinale, Paolo Korwin Krukowski, Andrea Schubert, Ivan Visentin
After quickly touching upon general aspects of strigolactones biology and functions, including structure, synthesis and perception, this review focuses on the role and regulation of the strigolactone pathway during osmotic stress, in light of the most recent research developments. We discuss available data on organ-specific dynamics of strigolactone synthesis and interaction with abscisic acid in the acclimatization response, with emphasis on the ecophysiological implications of the effects on the stomatal closure process...
January 15, 2018: Journal of Experimental Botany
https://www.readbyqxmd.com/read/29346675/in-search-of-the-best-xenogeneic-material-for-a-paediatric-conduit-an-experimental-study
#6
Irina Y Zhuravleva, Nataliya R Nichay, Yuriy Y Kulyabin, Tatyana P Timchenko, Alexander A Korobeinikov, Yuliya F Polienko, Svetlana S Shatskaya, Elena V Kuznetsova, Alexey V Voitov, Alexander V Bogachev-Prokophiev, Alexander M Karaskov
OBJECTIVES: The development of calcification-resistant bioprosthetic materials is a very important challenge for paediatric surgery. The subcutaneous implantation in rats is the well-known first-stage model for this kind of research. Using this model, we aimed to compare calcification of the porcine aortic wall and bovine pericardium and jugular vein wall cross-linked with glutaraldehyde (GA) and ethylene glycol diglycidyl ether (DE). We also determined the efficacy of DE-preserved tissue modification with 2-(2-carboxyethylamino)ethylidene-1,1-bisphosphonic acid (CEABA)...
January 15, 2018: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/29346627/severe-and-protracted-sleep-disruptions-in-mouse-model-of-post-traumatic-stress-disorder
#7
Rishi Sharma, Pradeep Sahota, Mahesh M Thakkar
Increasing evidences suggest that the predator threat model is a valid animal model of post-traumatic stress disorder (PTSD). However, sleep has never been examined in this model. Since sleep disturbances, including insomnia and excessive daytime sleepiness, are severe and protracted symptoms of PTSD, we hypothesized that mice exposed to predator odor trauma (POT) will display contextual fear conditioning along with severe and protracted sleep disruptions.Adult male C57BL/6J mice, instrumented with wire electrodes [to record hippocampal field potentials (LFP) and nuchal muscle (EMG) activity], were exposed to contextual conditioning using soiled cat litter as unconditional stimulus (US)...
January 13, 2018: Sleep
https://www.readbyqxmd.com/read/29346572/analysis-of-experience-regulated-transcriptome-and-imprintome-during-critical-periods-of-mouse-visual-system-development-reveals-spatiotemporal-dynamics
#8
Chi-Lin Hsu, Chih-Hsuan Chou, Shih-Chuan Huang, Chia-Yi Lin, Meng-Ying Lin, Chun-Che Tung, Chun-Yen Lin, Ivan Pochou Lai, Yan-Fang Zou, Neil A Youngson, Shau-Ping Lin, Chang-Hao Yang, Shih-Kuo Chen, Susan Shur-Fen Gau, Hsien-Sung Huang
Visual system development is light-experience dependent, which strongly implicates epigenetic mechanisms in light-regulated maturation. Among many epigenetic processes, genomic imprinting is an epigenetic mechanism through which monoallelic gene expression occurs in a parent-of-origin-specific manner. It is unknown if genomic imprinting contributes to visual system development. We profiled the transcriptome and imprintome during critical periods of mouse visual system development under normal- and dark-rearing conditions using B6/CAST F1 hybrid mice...
January 15, 2018: Human Molecular Genetics
https://www.readbyqxmd.com/read/29346563/lc3-immunostaining-in-the-inferior-olivary-nuclei-of-cats-with-niemann-pick-disease-type-c1-is-associated-with-patterned-purkinje-cell-loss
#9
Brittney L Gurda, Jessica H Bagel, Samantha J Fisher, Mark L Schultz, Andrew P Lieberman, Peter Hand, Charles H Vite, Gary P Swain
The feline model of Niemann-Pick disease, type C1 (NPC1) recapitulates the clinical, neuropathological, and biochemical abnormalities present in children with NPC1. The hallmarks of disease are the lysosomal storage of unesterified cholesterol and multiple sphingolipids in neurons, and the spatial and temporal distribution of Purkinje cell death. In feline NPC1 brain, microtubule-associated protein 1 light chain 3 (LC3) accumulations, indicating autophagosomes, were found within axons and presynaptic terminals...
January 13, 2018: Journal of Neuropathology and Experimental Neurology
https://www.readbyqxmd.com/read/29346538/vitamin-k5-is-an-efficient-photosensitizer-for-ultraviolet-a-light-inactivation-of-bacteria
#10
Fei Xu, Ying Li, Justen Ahmad, Yonggang Wang, Dorothy Scott, Jaroslav G Vostal
Photodynamic treatment combining light and a photosensitizer molecule can be an effective method to inactivate pathogenic bacteria. This study identified vitamin K5 as an efficient photosensitizer for ultraviolet light A (UVA)-induced bacterial inactivation. Six bacterial species, Bacillus cereus (vegetative form), Escherichia coli, Pseudomonas aeruginosa, Staphylococcus aureus, Staphylococcus epidermidis, Klebsiella pneumoniae, and two species of antibiotic-resistant bacteria, Pseudomonas aeruginosa* and Staphylococcus aureus*, were suspended in aqueous solutions with or without vitamin K5 and exposed to UVA irradiation...
January 15, 2018: FEMS Microbiology Letters
https://www.readbyqxmd.com/read/29346496/melanopsin-system-dysfunction-in-smith-magenis-syndrome-patients
#11
Mirella Telles Salgueiro Barboni, Clarissa Bueno, Balázs Vince Nagy, Patrícia Lobo Maia, Kallene Summer Moreira Vidal, Rosana Cardoso Alves, Russel J Reiter, Fernanda Gaspar do Amaral, José Cipolla-Neto, Dora Fix Ventura
Purpose: Smith-Magenis syndrome (SMS) causes sleep disturbance that is related to an abnormal melatonin profile. It is not clear how the genomic disorder leads to a disturbed synchronization of the sleep/wake rhythm in SMS patients. To evaluate the integrity of the intrinsically photosensitive retinal ganglion cell (ipRGC)/melanopsin system, the transducers of the light-inhibitory effect on pineal melatonin synthesis, we recorded pupillary light responses (PLR) in SMS patients. Methods: Subjects were SMS patients (n = 5), with molecular diagnosis and melatonin levels measured for 24 hours and healthy controls (n = 4)...
January 1, 2018: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/29346445/transcriptome-analysis-of-skin-fibroblasts-with-dominant-negative-col3a1-mutations-provides-molecular-insights-into-the-etiopathology-of-vascular-ehlers-danlos-syndrome
#12
Nicola Chiarelli, Giulia Carini, Nicoletta Zoppi, Marco Ritelli, Marina Colombi
Vascular Ehlers-Danlos syndrome (vEDS) is a dominantly inherited connective tissue disorder caused by mutations in the COL3A1 gene that encodes type III collagen (COLLIII), which is the major expressed collagen in blood vessels and hollow organs. The majority of disease-causing variants in COL3A1 are glycine substitutions and in-frame splice mutations in the triple helix domain that through a dominant negative effect are associated with the severe clinical spectrum potentially lethal of vEDS, characterized by fragility of soft connective tissues with arterial and organ ruptures...
2018: PloS One
https://www.readbyqxmd.com/read/29346306/zinc-tantalum-oxynitride-zntao%C3%A2-n-photoanode-modified-with-cobalt-phosphate-layers-for-the-photoelectrochemical-oxidation-of-alkali-water
#13
Prabhakarn Arunachalam, Maged N Shaddad, Mohamed A Ghanem, Abdullah M Al-Mayouf, Mark T Weller
Photoanodes fabricated by the electrophoretic deposition of a thermally prepared zinc tantalum oxynitride (ZnTaO₂N) catalyst onto indium tin oxide (ITO) substrates show photoactivation for the oxygen evolution reaction (OER) in alkaline solutions. The photoactivity of the OER is further boosted by the photodeposition of cobalt phosphate (CoPi) layers onto the surface of the ZnTaO₂N photoanodes. Structural, morphological, and photoelectrochemical (PEC) properties of the modified ZnTaO₂N photoanodes are studied using X-ray diffraction (XRD), scanning electron microscopy (SEM), ultraviolet visible (UV-Vis) diffuse reflectance spectroscopy, and electrochemical techniques...
January 18, 2018: Nanomaterials
https://www.readbyqxmd.com/read/29346246/comparison-of-diagnostic-potential-of-narrow-band-imaging-bronchoscopy-over-white-light-bronchoscopy-in-lung-cancer
#14
Manish Advani, Gopal Purohit, Sunil Vyas, Jyoti Kumari
BACKGROUND: Worldwide, lung cancer is the largest contributor to new cancer diagnoses and to death from cancer. Narrow band imaging (NBI) is a novel bronchoscopic technique which enables detailed examination of submucosal microcapillary grid and showed great potential in early detection of malignant lesions of the bronchial mucosa. The aim of this study was to compare diagnostic potential of NBI bronchoscopy over white light (WL) bronchoscopy in lung cancer. METHODS: We enrolled 187 patients having clinical and radiologic findings highly suspicious of lung cancer...
January 16, 2018: Journal of Bronchology & Interventional Pulmonology
https://www.readbyqxmd.com/read/29346139/blood-biomarkers-for-evaluation-of-perinatal-encephalopathy-state-of-the-art
#15
Ernest M Graham, Allen D Everett, Jean-Christophe Delpech, Frances J Northington
PURPOSE OF REVIEW: The rapid progress in biomarker science is on the threshold of significantly changing clinical care for infants in the neonatal ICU. Infants with neonatal brain injuries will likely be the first group whose management is dramatically altered with point-of-care, rapidly available brain biomarker analysis. Providing an interim update on progress in this area is the purpose of this review. RECENT FINDINGS: Highlighted findings from the past 18 months of publications on biomarkers in neonatal brain injury include; Specific nonbrain markers of cardiac health and global asphyxia continue to provide information on brain injury after hypoxic-ischemic encephalopathy (HIE)...
January 17, 2018: Current Opinion in Pediatrics
https://www.readbyqxmd.com/read/29346100/improving-color-constancy-in-an-ambient-light-environment-using-the-phong-reflection-model
#16
Sung-Min Woo, Sang-Ho Lee, Jun-Sang Yoo, Jong-Ok Kim
We present a physics-based illumination estimation approach explicitly designed to handle natural images under ambient light. Existing physics-based color constancy methods are theoretically perfect but do not handle real-world images well because the majority of these methods assume a single illuminant. Therefore, specular pixels selected using existing methods produce estimated dichromatic lines that are thick or curvilinear in the presence of ambient light, thus generating significant errors. Based on the Phong reflection model, we show that a group of specular pixels on a uniformly colored object, although they are subject to intensity thresholding, produce a unique dichromatic line length depending on the geometry of each image path...
April 2018: IEEE Transactions on Image Processing: a Publication of the IEEE Signal Processing Society
https://www.readbyqxmd.com/read/29346091/plenoptic-image-motion-deblurring
#17
Paramanand Chandramouli, Meiguang Jin, Daniele Perrone, Paolo Favaro
We propose a method to remove motion blur in a single light field captured with a moving plenoptic camera. Since motion is unknown, we resort to a blind deconvolution formulation, where one aims to identify both the blur point spread function and the latent sharp image. Even in the absence of motion, light field images captured by a plenoptic camera are affected by a non-trivial combination of both aliasing and defocus, which depends on the 3D geometry of the scene. Therefore, motion deblurring algorithms designed for standard cameras are not directly applicable...
April 2018: IEEE Transactions on Image Processing: a Publication of the IEEE Signal Processing Society
https://www.readbyqxmd.com/read/29345963/deletion-of-estrogen-receptor-alpha-in-skeletal-muscle-results-in-impaired-contractility-in-female-mice
#18
Brittany C Collins, Tara L Mader, Christine A Cabelka, Melissa R Iñigo, Espen E Spangenburg, Dawn A Lowe
Estradiol deficiency in females can result in skeletal muscle strength loss, and treatment with estradiol mitigates the loss. There are three primary estrogen receptors and estradiol elicits effects through these receptors in various tissues. Ubiquitous estrogen receptor α (ERα) knockout mice exhibit numerous biological disorders, but little is known regarding the specific role of ERα in skeletal muscle contractile function. The purpose of this study was to determine the impact of skeletal muscle specific ERα deletion on contractile function, hypothesizing that ERα is a main receptor through which estradiol affects muscle strength in females...
January 18, 2018: Journal of Applied Physiology
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
#19
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
https://www.readbyqxmd.com/read/29345952/visible-light-enabled-preparation-of-palladium-nanoparticles-and-application-as-catalysts-for-suzuki-miyaura-coupling
#20
Florian Mäsing, Harald Nüsse, Jürgen Klingauf, Armido Studer
Silyl ketones were used for the preparation of palladium nanoparticles (PdNPs) starting with Pd(OAc)2 in dimethylformamide under irradiation with a visible light-emitting diode (LED). Variation of the silyl ketone structure allowed adjustment of the PdNP diameter (1.9 or 5.2 nm). The in situ-formed PdNPs were further stabilized with polyvinylpyrrolidone and then applied as recyclable catalysts in the Suzuki-Miyaura coupling of arylboronic acids with aryl iodides to obtain substituted biphenyls in excellent yields...
January 18, 2018: Organic Letters
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