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https://www.readbyqxmd.com/read/28207795/organ-dysfunction-during-continuous-veno-venous-high-cut-off-hemodialysis-in-patients-with-septic-acute-kidney-injury-a-prospective-observational-study
#1
Gianluca Villa, Cosimo Chelazzi, Elena Morettini, Lucia Zamidei, Serafina Valente, A Lucia Caldini, Giovanni Zagli, A Raffaele De Gaudio, Stefano Romagnoli
BACKGROUND: Continuous veno-venous hemodialysis with high cut-off membranes (HCO-CVVHD) removes inflammatory mediators involved in organ dysfunction during sepsis. The aim of the present study was to assess the variations in SOFA score and identify early predictors of short-term mortality in a cohort of patients with septic shock, treated with HCO-CVVHD for acute kidney injury (AKI). METHODS: An observational prospective multicenter cohort study was conducted in four mixed medical-surgical ICUs...
2017: PloS One
https://www.readbyqxmd.com/read/28206753/charge-density-wave-in-the-new-polymorphs-of-re2ru3ge5-re-pr-sm-dy
#2
Daniel E Bugaris, Christos D Malliakas, Fei Han, Nicholas P Calta, Mihai Sturza, Matthew Krogstad, Raymond Osborn, Stephan Rosenkranz, Jacob P C Ruff, Giancarlo Trimarchi, Sergey L Bud'ko, Mahalingam Balasubramanian, Duck Young Chung, Mercouri G Kanatzidis
A new polymorph of the RE2Ru3Ge5 (RE = Pr, Sm, Dy) compounds has been grown as single crystals via an indium flux. These compounds crystallize in tetragonal space group P4/mnc with the Sc2Fe3Si5-type structure, having lattice parameters a = 11.020(2) Å and c = 5.853(1) Å for RE = Pr, a = 10.982(2) Å and c = 5.777(1) Å for RE = Sm, and a = 10.927(2) Å and c = 5.697(1) Å for RE = Dy. These materials exhibit a structural transition at low temperature that occurs due to the charge density wave (CDW). Both the high-temperature average crystal structure and the low-temperature incommensurately modulated crystal structure (for Sm2Ru3Ge5 as a representative) have been solved...
February 16, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28198600/relationship-between-field-tests-and-match-running-performance-in-high-level-young-brazilian-soccer-players
#3
Rodrigo Aquino, Luiz H Palucci Vieira, Lucas de Paula Oliveira, Luiz G Cruz Goncalves, Paulo R Pereira Santiago
BACKGROUND: The main aim of this study was to analyse the relationship between field tests and match running performance using computational tracking technology in high-level young Brazilian soccer players. METHODS: Twenty-five young male Brazilian soccer players participated in this study (U-15, n = 13; U-17, n = 12). In the same week the players were submitted to field tests and actual matches. The field tests were: Maximum Speed (10m-30m), Zig-Zag, Running-based Anaerobic Sprint Test, and Yo-Yo Intermittent Recovery Test level 1...
February 14, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28198379/large-positive-in-plane-magnetoresistance-induced-by-localized-states-at-nanodomain-boundaries-in-graphene
#4
Han-Chun Wu, Alexander N Chaika, Ming-Chien Hsu, Tsung-Wei Huang, Mourad Abid, Mohamed Abid, Victor Yu Aristov, Olga V Molodtsova, Sergey V Babenkov, Yuran Niu, Barry E Murphy, Sergey A Krasnikov, Olaf Lübben, Huajun Liu, Byong Sun Chun, Yahya T Janabi, Sergei N Molotkov, Igor V Shvets, Alexander I Lichtenstein, Mikhail I Katsnelson, Ching-Ray Chang
Graphene supports long spin lifetimes and long diffusion lengths at room temperature, making it highly promising for spintronics. However, making graphene magnetic remains a principal challenge despite the many proposed solutions. Among these, graphene with zig-zag edges and ripples are the most promising candidates, as zig-zag edges are predicted to host spin-polarized electronic states, and spin-orbit coupling can be induced by ripples. Here we investigate the magnetoresistance of graphene grown on technologically relevant SiC/Si(001) wafers, where inherent nanodomain boundaries sandwich zig-zag structures between adjacent ripples of large curvature...
February 15, 2017: Nature Communications
https://www.readbyqxmd.com/read/28195288/slip-divergence-of-water-flow-in-graphene-nanochannels-the-role-of-chirality
#5
Enrique Wagemann, Elton Oyarzua, Jens H Walther, Harvey A Zambrano
Graphene has attracted considerable attention due to its characteristics as a 2D material and its fascinating properties, providing a potential building block for nanofabrication. In nanochannels the solid-liquid interface plays a non-negligible role in determining the fluid dynamics. Therefore, for an optimal design of nanofluidic devices, a comprehensive understanding of the slippage in a water flow confined between graphene walls is important. In nanoconfinement, experimental and computational studies have found the slip length to increase nonlinearly when the shear rate is larger than a critical value...
February 14, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28179428/breaking-confinement-unconventional-peptide-presentation-by-major-histocompatibility-mhc-class-i-allele-hla-a-02-01
#6
Soumya G Remesh, Massimo Andreatta, Ge Ying, Thomas Kaever, Morten Nielsen, Curtis McMurtrey, William Hildebrand, Bjoern Peters, Dirk M Zajonc
Peptide antigen-presentation by Major Histocompatibility Class (MHC) I proteins initiates CD8+ T cell mediated immunity against pathogens and cancers. MHC I molecules typically bind peptides with nine amino acids in length with both ends tucked inside the major A and F binding pocket. It has been known for a while that longer peptides can also bind by either bulging out of the groove in the middle of the peptide or by binding in a zig-zag fashion inside the groove. In a recent study, we identified an alternative binding conformation of naturally occurring peptides from Toxoplasma gondii bound by HLA-A*02:01...
February 8, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28135276/binding-of-dna-bending-non-histone-proteins-destabilizes-regular-30-nm-chromatin-structure
#7
Gaurav Bajpai, Ishutesh Jain, Mandar M Inamdar, Dibyendu Das, Ranjith Padinhateeri
Why most of the in vivo experiments do not find the 30-nm chromatin fiber, well studied in vitro, is a puzzle. Two basic physical inputs that are crucial for understanding the structure of the 30-nm fiber are the stiffness of the linker DNA and the relative orientations of the DNA entering/exiting nucleosomes. Based on these inputs we simulate chromatin structure and show that the presence of non-histone proteins, which bind and locally bend linker DNA, destroys any regular higher order structures (e.g., zig-zag)...
January 2017: PLoS Computational Biology
https://www.readbyqxmd.com/read/27989540/assessing-postoperative-acute-kidney-injury-in-high-risk-patients-undergoing-major-abdominal-surgery-author-s-reply
#8
Stefano Romagnoli, Giovanni Zagli, Zaccaria Ricci
No abstract text is available yet for this article.
February 2017: Journal of Critical Care
https://www.readbyqxmd.com/read/27982256/effect-of-curcumin-on-visfatin-and-zinc-%C3%AE-2-glycoprotein-in-a-rat-model-of-non-alcoholic-fatty-liver-disease
#9
Changping Li, Juehong Li, Yun Chen, Xiaolin Zhong, Min Kang
PURPOSE: To investigate the effect of curcumin on visfatin and zinc-α2-glycoprotein (ZAG) expression levels in rats with non-alcoholic fatty liver disease (NAFLD). METHODS: Fifty-six male rats were randomly divided into a control group (n=16) and model group (n=40) and were fed on a normal diet or a high-fat diet, respectively. Equal volumes of sodium carboxymethyl cellulose (CMC) were intragastrically administered to the control group for 4 weeks. At the end of the 12th week, visfatin and ZAG protein expression levels were examined by immunohistochemistry...
November 2016: Acta Cirúrgica Brasileira
https://www.readbyqxmd.com/read/27968777/noninvasive-epicardial-and-endocardial-electrocardiographic-imaging-of-scar-related-ventricular-tachycardia
#10
Linwei Wang, Omar A Gharbia, B Milan Horáček, John L Sapp
BACKGROUND: The majority of life-threatening ventricular tachycardias (VTs) are sustained by heterogeneous scar substrates with narrow strands of surviving tissue. An effective treatment for scar-related VT is to modify the underlying scar substrate by catheter ablation. If activation sequence and entrainment mapping can be performed during sustained VT, the exit and isthmus of the circuit can often be identified. However, with invasive catheter mapping, only monomorphic VT that is hemodynamically stable can be mapped in this manner...
November 2016: Journal of Electrocardiology
https://www.readbyqxmd.com/read/27924127/ssr-based-genetic-diversity-of-pigmented-and-aromatic-rice-oryza-sativa-l-genotypes-of-the-western-himalayan-region-of-india
#11
Humaira Ashraf, Amjad M Husaini, M Ashraf Bhat, G A Parray, Salim Khan, Nazir A Ganai
A set of 24 of SSR markers were used to estimate the genetic diversity in 16 rice genotypes found in Western Himalayas of Kashmir and Himachal Pradesh, India. The level of polymorphism among the genotypes of rice was evaluated from the number of alleles and PIC value for each of the 24 SSR loci. A total of 68 alleles were detected across the 16 genotypes through the use of these 24 SSR markers The number of alleles per locus generated varied from 2 (RM 338, RM 452, RM 171) to 6 (RM 585, RM 249, RM 481, RM 162)...
October 2016: Physiology and Molecular Biology of Plants: An International Journal of Functional Plant Biology
https://www.readbyqxmd.com/read/27916958/catalytic-performance-of-a-new-1d-cu-ii-coordination-polymer-cu-no%C3%A2-h%C3%A2-o-htae-4-4-bpy-for-knoevenagel-condensation
#12
Edurne S Larrea, Roberto Fernández de Luis, María I Arriortua
The {Cu(NO₃)(H₂O)}(HTae)(4,4'-Bpy) (H₂Tae = 1,1,2,2-tetraacetylethane, 4,4'-Bpy = 4,4'-Dipyridyl) 1D coordination polymer has been obtained by slow evaporation. The crystal structure consists of parallel and oblique {Cu(HTae)(4,4'-Bpy)} zig-zag metal-organic chains stacked along the [100] crystallographic direction. Copper(II) ions are in octahedral coordination environment linked to two nitrogen atoms of two bridging 4,4'-Bpy and to two oxygen atoms of one HTae molecule in the equatorial plane. The occupation of the axial positions varies from one copper atom to another, with different combinations of water molecules and nitrate anions, giving rise to a commensurate super-structure...
December 1, 2016: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/27886218/revisiting-the-fear-of-snakes-in-children-the-role-of-aposematic-signalling
#13
Jérémie Souchet, Fabien Aubret
Why humans fear snakes is an old, yet unresolved debate. Its innate origin from evolutionary causes is debated against the powerful influence early experience, culture, media and religion may have on people's aversion to snakes. Here we show that the aversion to snakes in human beings may have been mistaken for an aversion to aposematic signals that are commonly displayed by snakes. A total of 635 children were asked to rate single item images as "nice" or "mean". Snakes, pets and smiley emoticon items were not rated as "mean" unless they displayed subtle aposematic signals in the form of triangular (rather than round) shapes...
November 25, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27853777/synthesis-structure-and-properties-of-new-bimetallic-sodium-and-potassium-lanthanum-borohydrides
#14
SeyedHosein Payandeh GharibDoust, Michael Heere, Magnus H Sørby, Morten B Ley, Dorthe B Ravnsbæk, Bjørn C Hauback, Radovan Černý, Torben R Jensen
Two new bimetallic sodium or potassium lanthanum borohydrides, NaLa(BH4)4 and K3La(BH4)6, are formed using La(BH4)3 free of metal halide by-products. NaLa(BH4)4 crystallizes in an orthorhombic crystal system with unit cell parameters, a = 6.7987(19), b = 17.311(5), c = 7.2653(19) Å and space group symmetry Pbcn. This compound has a new structure type built from brucite-like layers of octahedra (hcp packing of anions) with half of the octahedral sites empty leading to octahedral chains similar to rutile (straight chains) or α-PbO2 (zig-zag chains)...
November 17, 2016: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/27847288/on-the-spider-that-spits-the-solution-of-a-nonsmooth-oscillator
#15
Daniel Goeleven
Spitting spiders (Scytodes sp.) spit a mixture of silk and glue at their prey during attack. In this note, we show that a nonsmooth oscillator can be used as a biomechanical model to describe the zig-zag patterns produced by the spit of the spider Scytodes thoracica.
January 2017: Mathematical Biosciences
https://www.readbyqxmd.com/read/27843650/reliability-and-validity-measurement-of-sagittal-lumbosacral-quiet-standing-posture-with-a-smartphone-application-in-a-mixed-population-of-183-college-students-and-personnel
#16
George A Koumantakis, Maria Nikoloudaki, Sara Thacheth, Kalliroi Zagli, Konstantina Bitrou, Andreas Nigritinos, Leon Botton
Accurate recording of spinal posture with simple and accessible measurement devices in clinical practice may lead to spinal loading optimization in occupations related to prolonged sitting and standing postures. Therefore, the purpose of this study was to establish the level of reliability of sagittal lumbosacral posture in quiet standing and the validity of the method in differentiating between male and female subjects, establishing in parallel a normative database. 183 participants (83 males and 100 females), with no current low back or pelvic pain, were assessed using the "iHandy Level" smartphone application...
2016: Advances in Orthopedics
https://www.readbyqxmd.com/read/27833285/subcutaneous-pedicle-propeller-flap-an-old-technique-revisited-and-modified
#17
Durga Karki, Nikhil Mehta, Ravi Prakash Narayan
BACKGROUND: Post-burn axillary and elbow scar contracture is a challenging problem to the reconstructive surgeon owing to the wide range of abduction and extension that should be achieved, respectively, while treating either of the joint. The aim of this paper is to highlight the use of subcutaneous pedicle propeller flap for the management of post-burn axillary and elbow contractures. METHODOLOGY: This is a prospective case study of axillary and elbow contractures managed at a tertiary care hospital using propeller flap based on subcutaneous pedicle from 2009 to 2014...
May 2016: Indian Journal of Plastic Surgery: Official Publication of the Association of Plastic Surgeons of India
https://www.readbyqxmd.com/read/27818253/vasodilator-activity-of-hydrogen-sulfide-h2s-in-human-mesenteric-arteries
#18
Serena Materazzi, Giovanni Zagli, Romina Nassini, Ilenia Bartolini, Stefano Romagnoli, Cosimo Chelazzi, Silvia Benemei, Andrea Coratti, Angelo Raffaele De Gaudio, Riccardo Patacchini
The role of endogenous H2S has been highlighted as a gaseous transmitter. The vascular smooth muscle inhibitory effects of H2S have been characterized in isolated aorta and mesenteric arteries in rats and mice. Our study was aimed at investigating the vascular effects of H2S on human isolated mesenteric arteries and examining the underlying mechanisms involved. All experiments were performed on rings (4-8mm long) of human mesenteric arteries obtained from patients undergoing abdominal surgery. Ethical approval was obtained from the Ethics Committee of the University Hospital of the University of Florence (app...
January 2017: Microvascular Research
https://www.readbyqxmd.com/read/27815131/sensory-coding-and-cognitive-processing-of-sound-in-veterans-with-blast-exposure
#19
Scott Bressler, Hannah Goldberg, Barbara Shinn-Cunningham
Recent anecdotal reports from VA audiology clinics as well as a few published studies have identified a sub-population of Service Members seeking treatment for problems communicating in everyday, noisy listening environments despite having normal to near-normal hearing thresholds. Because of their increased risk of exposure to dangerous levels of prolonged noise and transient explosive blast events, communication problems in these soldiers could be due to either hearing loss (traditional or "hidden") in the auditory sensory periphery or from blast-induced injury to cortical networks associated with attention...
November 2, 2016: Hearing Research
https://www.readbyqxmd.com/read/27798954/evolution-genomics-and-epidemiology-of-pseudomonas-syringae-challenges-in-bacterial-molecular-plant-pathology
#20
REVIEW
David A Baltrus, Honour C McCann, David S Guttman
A remarkable shift in our understanding of plant-pathogenic bacteria is underway. Until recently, nearly all research on phytopathogenic bacteria was focused on a small number of model strains, which provided a deep, but narrow, perspective on plant-microbe interactions. Advances in genome sequencing technologies have changed this by enabling the incorporation of much greater diversity into comparative and functional research. We are now moving beyond a typological understanding of a select collection of strains to a more generalized appreciation of the breadth and scope of plant-microbe interactions...
January 2017: Molecular Plant Pathology
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