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https://www.readbyqxmd.com/read/29149697/characteristics-of-motor-speech-phenotypes-in-multiple-sclerosis
#1
Jan Rusz, Barbora Benova, Hana Ruzickova, Michal Novotny, Tereza Tykalova, Jan Hlavnicka, Tomas Uher, Manuela Vaneckova, Michaela Andelova, Klara Novotna, Lucie Kadrnozkova, Dana Horakova
BACKGROUND: Motor speech disorders in multiple sclerosis (MS) are poorly understood and their quantitative, objective acoustic characterization remains limited. Additionally, little data regarding relationships between the severity of speech disorders and neurological involvement in MS, as well as the contribution of pyramidal and cerebellar functional systems on speech phenotypes, is available. METHODS: Speech data were acquired from 141 MS patients with Expanded Disability Status Scale (EDSS) ranging from 1 to 6...
November 8, 2017: Multiple Sclerosis and related Disorders
https://www.readbyqxmd.com/read/29149545/mechanical-properties-in-metal-organic-frameworks-emerging-opportunities-and-challenges-for-device-functionality-and-technological-applications
#2
REVIEW
Nicholas C Burtch, Jurn Heinen, Thomas D Bennett, David Dubbeldam, Mark D Allendorf
Some of the most remarkable recent developments in metal-organic framework (MOF) performance properties can only be rationalized by the mechanical properties endowed by their hybrid inorganic-organic nanoporous structures. While these characteristics create intriguing application prospects, the same attributes also present challenges that will need to be overcome to enable the integration of MOFs with technologies where these promising traits can be exploited. In this review, emerging opportunities and challenges are identified for MOF-enabled device functionality and technological applications that arise from their fascinating mechanical properties...
November 17, 2017: Advanced Materials
https://www.readbyqxmd.com/read/29149084/preparative-separation-and-purification-of-four-glycosides-from-gentianae-radix-by-high-speed-counter-current-chromatography-and-comparison-of-their-anti-no-production-effects
#3
Bao Chen, Yinghua Peng, Xinhui Wang, Zhiman Li, Yinshi Sun
Secoiridoid and iridoid glycosides are the main active components of Gentianaeradix. In this work, one iridoid and three secoiridoid glycosides from Gentianaeradix have been purified by high-speed counter-current chromatography in two runs using different solvent systems. Ethyl acetate-n-butanol-water (2:1:3, v/v/v) was the optimum solvent system to purify ca. 4.36 mg of loganic acid, 3.05 mg of swertiamarin, and 35.66 mg of gentiopicroside with 98.1%, 97.2% and 98.6% purities, respectively, while 31.15 mg of trifloroside with 98...
November 17, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29149068/a-new-uplc-ms-ms-method-for-the-characterization-and-discrimination-of-polysaccharides-from-genus-ephedra-based-on-enzymatic-digestions
#4
Yong-Gang Xia, Tian-Long Wang, Li-Ming Sun, Jun Liang, Bing-You Yang, Hai-Xue Kuang
Ephedra sinica polysaccharides have been reported to possess important activities, so quality evaluation of polysaccharides from the genus Ephedra is urgent. In this study, enzymatic digestions were performed to establish multiple saccharide fingerprints by ultra-performance liquid chromatography with electrospray ionization triple quadrupole linear ion trap mass spectrometry (UPLC-ESI-TQ-MS/MS) based on a multiple-reaction monitoring in negative mode. Under optimum UPLC-ESI⁻-TQ-MS/MS conditions, excellent separation and quantification of 21 constituents were achieved within 20 min on a solid core column with a 1...
November 17, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29148239/metabolic-signature-of-microvescicles-from-umbilical-cord-mesenchimal-stem-cells-of-preterm-and-term-infants
#5
Maurizio Bruschi, Laura Santucci, Silvia Ravera, Martina Bartolucci, Andrea Petretto, Daniela Calzia, Gianmarco Ghiggeri, Luca A Ramenghi, Giovanni Candiano, Isabella Panfoli
PURPOSE: Microvesicles, 200-1000 nm bodies budding from the cell plasma membrane, are a promising source of biomarkers. This study aimed at comparing the proteome of Microvesicles collected by ultracentrifugation from cultured Mesenchymal Stem Cells from Human Umbilical Cord of Preterm newborns(<34-weeks gestational age) in comparison to infants at Term(≥37 weeks). This discovery study was designed to establish the signature of prematurity. EXPERIMENTAL DESIGN: Orbitrap mass spectrometry, statistical, bioinformatics and biochemical analyses were employed...
November 16, 2017: Proteomics. Clinical Applications
https://www.readbyqxmd.com/read/29147716/complex-coacervation-of-mg-ii-phospho-polymethacrylate-a-synthetic-analog-of-sandcastle-worm-adhesive-phosphoproteins
#6
In Taek Song, Russell J Stewart
The highly phosphorylated Pc3 proteins, major components of the sandcastle worm adhesive, are sequestered with Mg as spherical sub-granules within heterogeneous secretory granules in adhesive gland cells. The phase behavior of a synthetic phospho-polymethacrylate analog of the Pc3 phosphoproteins, in the presense of Mg(ii), was characterized to determine whether it is chemically possible for the natural adhesive components to be packaged and stored as liquid complex coacervates. Of several multivalent metal salts tested, only MgCl induced complex coacervation of the phospho-copolymer...
November 17, 2017: Soft Matter
https://www.readbyqxmd.com/read/29147088/evaluation-and-characterization-of-milk-derived-microvescicle-isolated-from-bovine-colostrum
#7
Brighton E Maburutse, Mi-Ri Park, Sangnam Oh, Younghoon Kim
Extracellular microvesicles are membranous nano-sized cellular organelles secreted by a variety of cells under normal and pathological conditions and heterogeneous in size ranging from 30 nm to 1 μm. They carry functional microRNAs that can influence immunity and development. For a particular application of microvesicles, choice of isolation method is particularly important; however, their isolation methods from colostrum in particular have not been described clearly. In this work, differential ultracentrifugation as a conventional method, ultracentrifugation with some modification such as additional precipitations, ultrafiltration, sucrose gradient separation and ExoQuick™ as a commercial reagent were compared...
2017: Korean Journal for Food Science of Animal Resources
https://www.readbyqxmd.com/read/29146363/vortex-assisted-deep-eutectic-solvent-des-emulsification-liquid-liquid-microextraction-of-trace-curcumin-in-food-and-herbal-tea-samples
#8
Funda Aydin, Erkan Yilmaz, Mustafa Soylak
We developed a new microextraction method for separation and preconcentration of curcumin using deep eutectic solvent known as green solvent. Deep eutectic solvent (DES) formed by mixing of choline chloride and phenol was used as an extraction solvent in microextraction study to extract the curcumin at pH 4.0. The curcumin concentration in enriched DES phase was analyzed by UV-Visible spectrophotometer. The effect of parameters such as pH, mol ratio of DES composition, volume of DES, volume of tetrahydrofuran (THF) and sample volume were examined...
March 15, 2018: Food Chemistry
https://www.readbyqxmd.com/read/29146342/detection-of-coffee-adulteration-with-soybean-and-corn-by-capillary-electrophoresis-tandem-mass-spectrometry
#9
Daniela Daniel, Fernando Silva Lopes, Vagner Bezerra Dos Santos, Claudimir Lucio do Lago
The detection of coffee adulteration with soybean and corn by capillary electrophoresis-tandem mass spectrometry was accomplished by evaluating the monosaccharides profile obtained after acid hydrolysis of the samples. The acid hydrolysis, using H2SO4 as a catalyst, increases the ionic strength of the sample impairing the electrophoretic separation. Therefore, Ba(OH)2 was used to both neutralize the medium and reduce the content of sulfate by precipitation of BaSO4. The best separation of nine determined monosaccharides (fucose, galactose, arabinose, glucose, rhamnose, xylose, mannose, fructose and ribose) plus inositol as internal standard was obtained in 500 mmol·L(-1) triethylamine, pH 12...
March 15, 2018: Food Chemistry
https://www.readbyqxmd.com/read/29146068/applying-the-reasoned-action-approach-to-understanding-health-protection-and-health-risk-behaviors
#10
Mark Conner, Rosemary McEachan, Rebecca Lawton, Peter Gardner
RATIONALE: The Reasoned Action Approach (RAA) developed out of the Theory of Reasoned Action and Theory of Planned Behavior but has not yet been widely applied to understanding health behaviors. The present research employed the RAA in a prospective design to test predictions of intention and action for groups of protection and risk behaviors separately in the same sample. OBJECTIVE: To test the RAA for health protection and risk behaviors. METHOD: Measures of RAA components plus past behavior were taken in relation to eight protection and six risk behaviors in 385 adults...
October 22, 2017: Social Science & Medicine
https://www.readbyqxmd.com/read/29144557/penile-warty-mucoepidermoid-carcinoma-with-features-of-stratified-mucin-producing-intraepithelial-lesion-and-invasive-stratified-mucin-producing-carcinoma
#11
Kenji Yorita, Naoto Kuroda, Takushi Naroda, Masato Tamura, Chisato Ohe, Mukul Divatia, Mahul B Amin, Antonio L Cubilla, Dimitry V Kazakov, Ondrej Hes, Michael Michal, Michal Michal
AIMS: Stratified mucin-producing intraepithelial lesion (SMILE) and invasive stratified mucin-producing carcinoma (ISMC) are recently described cervical and penile lesions. We report an unusual case of mixed variant of penile squamous cell carcinomas with warty, usual and mucoepidermoid SMILE/ISMC features. METHODS AND RESULTS: A 62-year-old Japanese man had a glans penis lesion of one and a half years duration, suggesting malignancy. Partial penectomy and left inguinal lymphadenectomy were performed...
November 16, 2017: Histopathology
https://www.readbyqxmd.com/read/29144445/critical-review-on-the-significance-of-olive-phytochemicals-in-plant-physiology-and-human-health
#12
REVIEW
Irene Gouvinhas, Nelson Machado, Carla Sobreira, Raúl Domínguez-Perles, Sónia Gomes, Eduardo Rosa, Ana I R N A Barros
Olive oil displays remarkable organoleptic and nutritional features, which turn it into a foodstuff appreciated by consumers, and a basic component of the Mediterranean diet. Indeed, the noticed benefits of including olive oil in the diet have been assigned to the presence of diverse bioactive compounds with different molecular structures. These compounds confer a wide range of biological properties to this food matrix, including the prevention of distinct human diseases as well as the modulation of their severity...
November 16, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29143837/development-of-a-label-free-raman-imaging-technique-for-differentiation-of-malaria-parasite-infected-from-non-infected-tissue
#13
Laura Frame, James Brewer, Rebecca Lee, Karen Faulds, Duncan Graham
During malarial infection, the host uses the spleen to clear the malaria parasites, however, the parasites have evolved the ability to bind to endothelial receptors in blood vessels of tissues to avoid removal, known as sequestration, and this is largely responsible for the symptoms and severity of infection. So a technique which could non-invasively diagnose tissue burden could be utilised as an aid for localised malaria diagnosis within tissue. Raman spectroscopy is a label-free imaging technique and can provide unique and chemically specific Raman 'fingerprint' spectrum of biological samples such as tissue...
November 16, 2017: Analyst
https://www.readbyqxmd.com/read/29143772/fault-detection-of-bearing-systems-through-eemd-and-optimization-algorithm
#14
Dong-Han Lee, Jong-Hyo Ahn, Bong-Hwan Koh
This study proposes a fault detection and diagnosis method for bearing systems using ensemble empirical mode decomposition (EEMD) based feature extraction, in conjunction with particle swarm optimization (PSO), principal component analysis (PCA), and Isomap. First, a mathematical model is assumed to generate vibration signals from damaged bearing components, such as the inner-race, outer-race, and rolling elements. The process of decomposing vibration signals into intrinsic mode functions (IMFs) and extracting statistical features is introduced to develop a damage-sensitive parameter vector...
October 28, 2017: Sensors
https://www.readbyqxmd.com/read/29143604/fine-organization-of-genomic-regions-tagged-to-the-5s-rdna-locus-of-the-bread-wheat-5b-chromosome
#15
Ekaterina M Sergeeva, Andrey B Shcherban, Irina G Adonina, Michail A Nesterov, Alexey V Beletsky, Andrey L Rakitin, Andrey V Mardanov, Nikolai V Ravin, Elena A Salina
BACKGROUND: The multigene family encoding the 5S rRNA, one of the most important structurally-functional part of the large ribosomal subunit, is an obligate component of all eukaryotic genomes. 5S rDNA has long been a favored target for cytological and phylogenetic studies due to the inherent peculiarities of its structural organization, such as the tandem arrays of repetitive units and their high interspecific divergence. The complex polyploid nature of the genome of bread wheat, Triticum aestivum, and the technically difficult task of sequencing clusters of tandem repeats mean that the detailed organization of extended genomic regions containing 5S rRNA genes remains unclear...
November 14, 2017: BMC Plant Biology
https://www.readbyqxmd.com/read/29143598/gwas-for-plant-growth-stages-and-yield-components-in-spring-wheat-triticum-aestivum-l-harvested-in-three-regions-of-kazakhstan
#16
Yerlan Turuspekov, Aida Baibulatova, Kanat Yermekbayev, Laura Tokhetova, Vladimir Chudinov, Grigoriy Sereda, Martin Ganal, Simon Griffiths, Saule Abugalieva
BACKGROUND: Spring wheat is the largest agricultural crop grown in Kazakhstan with an annual sowing area of 12 million hectares in 2016. Annually, the country harvests around 15 million tons of high quality grain. Despite environmental stress factors it is predicted that the use of new technologies may lead to increases in productivity from current levels of 1.5 to up to 3 tons per hectare. One way of improving wheat productivity is by the application of new genomic oriented approaches in plant breeding projects...
November 14, 2017: BMC Plant Biology
https://www.readbyqxmd.com/read/29142388/analysis-of-free-amino-acids-in-different-extracts-of-orthosiphon-stamineus-leaves-by-high-performance-liquid-chromatography-combined-with-solid-phase-extraction
#17
Armaghan Shafaei, Nor Hidayah Ab Halim, Norhidayah Zakaria, Zhari Ismail
Background: Orthosiphon stamineus (OS) Benth is a medicinal plant and native in Southeast Asia. Previous studies have shown that OS leaves possess antioxidant, cytotoxic, diuretic, antihypertensive, and uricosuric effects. These beneficial effects have been attributed to the presence of primary and secondary metabolites such as polyphenols, amino acids, and flavonoids. Objective: To develop and validate an high-performance liquid chromatography (HPLC)-diode array detector (DAD) method combined with solid-phase extraction that involves precolumn derivatization with O-phthaladehyde for simultaneous analysis of free amino acids in OS leaves extracts...
October 2017: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/29142334/approaches-to-macroevolution-2-sorting-of-variation-some-overarching-issues-and-general-conclusions
#18
David Jablonski
Approaches to macroevolution require integration of its two fundamental components, within a hierarchical framework. Following a companion paper on the origin of variation, I here discuss sorting within an evolutionary hierarchy. Species sorting-sometimes termed species selection in the broad sense, meaning differential origination and extinction owing to intrinsic biological properties-can be split into strict-sense species selection, in which rate differentials are governed by emergent, species-level traits such as geographic range size, and effect macroevolution, in which rates are governed by organism-level traits such as body size; both processes can create hitchhiking effects, indirectly causing the proliferation or decline of other traits...
2017: Evolutionary Biology
https://www.readbyqxmd.com/read/29142333/approaches-to-macroevolution-1-general-concepts-and-origin-of-variation
#19
David Jablonski
Approaches to macroevolution require integration of its two fundamental components, i.e. the origin and the sorting of variation, in a hierarchical framework. Macroevolution occurs in multiple currencies that are only loosely correlated, notably taxonomic diversity, morphological disparity, and functional variety. The origin of variation within this conceptual framework is increasingly understood in developmental terms, with the semi-hierarchical structure of gene regulatory networks (GRNs, used here in a broad sense incorporating not just the genetic circuitry per se but the factors controlling the timing and location of gene expression and repression), the non-linear relation between magnitude of genetic change and the phenotypic results, the evolutionary potential of co-opting existing GRNs, and developmental responsiveness to nongenetic signals (i...
2017: Evolutionary Biology
https://www.readbyqxmd.com/read/29142327/the-circumstellar-envelope-around-the-s-type-agb-star-w-aql-effects-of-an-eccentric-binary-orbit
#20
S Ramstedt, S Mohamed, W H T Vlemmings, T Danilovich, M Brunner, E De Beck, E M L Humphreys, M Lindqvist, M Maercker, H Olofsson, F Kerschbaum, G Quintana-Lacaci
Context: Recent observations at subarcsecond resolution, now possible also at submillimeter wavelengths, have shown intricate circumstellar structures around asymptotic giant branch (AGB) stars, mostly attributed to binary interaction. The results presented here are part of a larger project aimed at investigating the effects of a binary companion on the morphology of circumstellar envelopes (CSEs) of AGB stars. Aims: AGB stars are characterized by intense stellar winds that build CSEs around the stars...
September 21, 2017: Astronomy and Astrophysics
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