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https://www.readbyqxmd.com/read/29458193/attenuation-of-neuro-inflammation-improves-survival-and-neurodegeneration-in-a-mouse-model-of-severe-neonatal-hyperbilirubinemia
#1
Simone Vodret, Giulia Bortolussi, Alessandra Iaconcig, Elena Martinelli, Claudio Tiribelli, Andrés F Muro
All pre-term newborns and a high proportion of term newborns develop neonatal jaundice. Neonatal jaundice is usually a benign condition and self-resolves within few days after birth. However, a combination of unfavorable complications may lead to acute hyperbilirubinemia. Excessive hyperbilirubinemia may be toxic for the developing nervous system leading to severe neurological damage and death by kernicterus. Survivors show irreversible neurological deficits such as motor, sensitive and cognitive abnormalities...
February 16, 2018: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/29458179/live-and-let-die-the-core-circadian-oscillator-coordinates-life-history-of-plants-and-pilots-leaf-senescence
#2
Ulrike Zentgraf, Jasmin Doll, Lena Riester
No abstract text is available yet for this article.
February 16, 2018: Molecular Plant
https://www.readbyqxmd.com/read/29458127/calmodulin-induced-conformational-control-and-allostery-underlying-neuronal-nitric-oxide-synthase-activation
#3
Quinlin M Hanson, Jeffrey R Carley, Tyler J Gilbreath, Brian C Smith, Eric S Underbakke
Nitric oxide synthase (NOS) is the primary generator of nitric oxide signals controlling diverse physiological processes such as neurotransmission and vasodilation. NOS activation is contingent on Ca2+ /calmodulin binding at a linker between its oxygenase and reductase domains to induce large conformational changes that orchestrate inter-domain electron transfer. However, the structural dynamics underlying activation of full-length NOS remain ambiguous. Employing hydrogen-deuterium exchange mass spectrometry, we reveal mechanisms underlying neuronal NOS (nNOS) activation by calmodulin and regulation by phosphorylation...
February 16, 2018: Journal of Molecular Biology
https://www.readbyqxmd.com/read/29458057/roles-of-the-insulin-signaling-pathway-in-insect-development-and-organ-growth
#4
Xianyu Lin, Guy Smagghe
Organismal development is a complex process as it requires coordination of many aspects to grow into fit individuals, such as the control of body size and organ growth. Therefore, the mechanisms of precise control of growth are essential for ensuring the growth of organisms at a correct body size and proper organ proportions during development. The control of the growth rate and the duration of growth (or the cessation of growth) are required in size control. The insulin signaling pathway and the elements involved are essential in the control of growth...
February 16, 2018: Peptides
https://www.readbyqxmd.com/read/29457932/oral-health-related-outcomes-in-edentulous-patients-treated-with-mandibular-implant-retained-dentures-versus-complete-dentures-systematic-review-with-meta-analyses
#5
Philip Kroll, Lisa Hou, Hani Radaideh, Nazanin Sharifi, Phuu P Han, Roseann Mulligan, Reyes Enciso
The objective of this systematic review was to determine the effect on oral health-related outcomes from mandibular implant-retained dentures opposing maxillary complete dentures in edentulous middle-age and older adults compared to complete removable dentures in both arches. Randomized controlled trials with an average age of the participants being 65 years old or above were included. The Cochrane Library, MEDLINE and Web of Science were searched. A total of 228 abstracts were reviewed for inclusion criteria with fourteen trials included and analyzed for risk of bias...
February 19, 2018: Journal of Oral Implantology
https://www.readbyqxmd.com/read/29457925/controlled-release-of-mitomycin-c-from-phemah-cu-ii-cryogel-membranes
#6
Monireh Bakhshpour, Handan Yavuz, Adil Denizli
Molecular imprinting technique was used for the preparation of antibiotic and anti-neoplastic chemotherapy drug (mitomycin C) imprinted cryogel membranes (MMC-ICM). The membranes were synthezied by using metal ion coordination interactions with N-methacryloyl-(l)-histidine methyl ester (MAH) functional monomer and template molecules (i.e. MMC). The 2-hydroxyethyl methacrylate (HEMA) monomer and methylene bisacrylamide (MBAAm) crosslinker were used for the preparation of mitomycin C imprinted cryogel membranes by radical suspension polymerization technique...
February 19, 2018: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/29457900/three-dimensional-structures-based-on-the-fusion-of-chrysene-and-spirobifluorene-chromophores-for-the-development-of-blue-oleds
#7
Hayoon Lee, Hyocheol Jung, Seokwoo Kang, Jin Hyuck Heo, Sang Hyuk Im, Jongwook Park
A new deep-blue chromophore containing a three-dimensionally (3D) shaped CS core composed of fused chrysene and spirofluorene units is synthesized. A pair of m-terphenyl (TP) units is also substituted onto the CS core, at two different sets of positions to form two additional compounds: CS-TPTP and TP-CS-TP. The TP-CS-TP compound showed the highest efficiency with an external quantum efficiency (EQE) of 3.05%, and Commission Internationale de L'Eclairage coordinates (CIE) of (0.148, 0.098) corresponding to the emission of blue light...
February 19, 2018: Journal of Organic Chemistry
https://www.readbyqxmd.com/read/29457895/periodic-trends-in-actinyl-thio-crown-ether-complexes
#8
Shu-Xian Hu, Jing-Jing Liu, John K Gibson, Jun Li
In-cavity complexes and their bonding features between thio-crown (TC) ethers and f-elements are unexplored so far. In this paper, actinyl(VI) (An = U, Np, Pu, Am, and Cm) complexes of TC ethers have been characterized using relativistic density functional theory. The TC ether ligands include tetrathio-12-crown-4 (12TC4), pentathio-15-crown-5 (15TC5), and hexathio-18-crown-6 (18TC6). On the basis of the calculations, it is found that the "double-decker" sandwich structure of AnO2 (12TC4)2 2+ and "side-on" structure AnO2 (12TC4)2+ are changed to "insertion" structures for AnO2 (15TC5)2+ and AnO2 (18TC6)2+ due to increased size of the TC ether ligands...
February 19, 2018: Inorganic Chemistry
https://www.readbyqxmd.com/read/29457865/nucleophilic-substitution-in-solution-activation-strain-analysis-of-weak-and-strong-solvent-effects
#9
Trevor A Hamlin, Bas van Beek, Lando P Wolters, F Matthias Bickelhaupt
We have quantum chemically studied the effect of various polar and apolar solvents on the shape of the potential energy surface (PES) of a diverse collection of archetypal nucleophilic substitution reactions at carbon, silicon, phosphorus, and arsenic using density functional theory at OLYP/TZ2P. In the gas phase, all our model SN2 reactions have single-well PESs, except for SN2@C which has a double-well energy profile. The presence of the solvent can have a significant effect on the shape of the PES and thus on the nature of the SN2 process...
February 19, 2018: Chemistry: a European Journal
https://www.readbyqxmd.com/read/29457810/a-computational-study-of-the-catalytic-aerobic-epoxidation-of-propylene-over-the-coordinatively-unsaturated-metal-organic-framework-fe-3-btc-2-formation-of-propylene-oxide-and-competing-reactions
#10
Thana Maihom, Montree Sawangphruk, Michael Probst, Jumras Limtrakul
The aerobic epoxidation of propylene over the metal-organic framework Fe3 (btc)2 (btc = 1,3,5-benzentricarboxylate) as catalyst has been investigated by means of density functional calculations. The mechanisms of the reaction towards propylene oxide, carbonylic products (acetone and propanal) and a pi-allyl radical were investigated to assess the efficiency of Fe3 (btc)2 for the selective formation of propylene oxide. Propylene oxide and carbonylic products are formed on Fe3 (btc)2 by proceeding via propyleneoxy intermediates in the first step...
February 19, 2018: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/29457723/accurate-quantum-wave-packet-study-of-the-deep-well-d-hd-reaction-product-ro-vibrational-state-resolved-integral-and-differential-cross-sections
#11
Haixiang He, Weimin Zhu, Wenli Su, Lihui Dong, Bin Li
The H+ + H2 reaction and its isotopic variants as the simplest triatomic ion-molecule reactive system have been attracting much interests, however there are few studies on the titled reaction at state-to-state level until recent years. In this work, accurate state-to-state quantum dynamics studies of the titled reaction have been carried out by a reactant Jacobi coordinate-based time-dependent wave packet approach on diabatic potential energy surfaces constructed by Kamisaka et al. Product ro-vibrational state-resolved information has been calculated for collision energies up to 0...
February 19, 2018: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/29457653/how-to-create-shared-symbols
#12
Nicolas Fay, Bradley Walker, Nik Swoboda, Simon Garrod
Human cognition and behavior are dominated by symbol use. This paper examines the social learning strategies that give rise to symbolic communication. Experiment 1 contrasts an individual-level account, based on observational learning and cognitive bias, with an inter-individual account, based on social coordinative learning. Participants played a referential communication game in which they tried to communicate a range of recurring meanings to a partner by drawing, but without using their conventional language...
February 19, 2018: Cognitive Science
https://www.readbyqxmd.com/read/29457635/hand-preference-on-unimanual-and-bimanual-tasks-in-barbary-macaques-macaca-sylvanus
#13
Barbara Regaiolli, Caterina Spiezio, William D Hopkins
The presence of group-level handedness in non-human primates remains controversial, as different studies have produced inconsistent results. Bimanual coordinated tasks have been found to elicit more pronounced hand preferences than simple unimanual tasks. The aim of this study was to examine manual lateralization in a group of 15 Barbary macaques during unimanual and bimanual tasks. In the unimanual task, data on simple food reaching in a foraging context were collected. During the bimanual task, macaques had to use one hand to hold a tube-shaped apparatus while reaching with the other hand to retrieve the food inside it...
February 19, 2018: American Journal of Primatology
https://www.readbyqxmd.com/read/29457624/-coordinated-heart-failure-care-in-poland-towards-optimal-organisation-of-the-health-care-system
#14
Jadwiga Nessler, Adam Kozierkiewicz, Andrzej Gackowski, Piotr Ponikowski, Ewa Straburzynska-Migaj, Izabella Uchmanowicz, Piotr Hoffman, Krzysztof Chlebus, Grzegorz Gielerak, Mariusz Gąsior, Tomasz Grodzicki, Jakub Gierczyński, Piotr Jankowski, Jarosław Kaźmierczak, Jacek Legutko, Przemysław Leszek, Maciej Miłkowski, Grzegorz Opolski, Piotr Rozentryt, Adam Windak, Adam Witkowski, Mirosław J Wysocki, Andrzej Zapaśnik, Tomasz Zdrojewski
Heart failure has becoming an increasing medical, economic, and social problem globally. The prevalence of this syndrome is rising, and despite unequivocal positive effects of modern therapy, reduction of mortality has been achieved at the cost of more frequent hospitalisations. Unlike in many European countries, in Poland heart failure is usually recognised later, at a more advanced stage of the disease, leaving less time for ambulatory treatment and resulting in a high number of hospitalisations. The current paper presents the most important data regarding morbidity and mortality due to heart failure in Poland...
2018: Kardiologia Polska
https://www.readbyqxmd.com/read/29457374/proteasomal-function-is-impaired-in-human-osteoarthritic-chondrocytes-and-this-can-contribute-to-decreased-sox9-and-aggrecan
#15
Ramon L Serrano, Liang-Yu Chen, Martin K Lotz, Ru Liu-Bryan, Robert Terkeltaub
OBJECTIVE: Osteoarthritis (OA) chondrocytes have impaired autophagy, one arm of the proteostasis network that coordinates proteome and organelle quality control and degradation. Deficient proteostasis impacts differentiation and viability, and inflammatory processes in aging and disease. Studying OA chondrocytes, we assessed ubiquitin proteasome system proteasomal function. METHODS: We evaluated human knee cartilages by immunohistochemistry, and assessed proteasomal function, levels of proteasomal core subunits and chaperones, and autophagy in cultured chondrocytes...
February 18, 2018: Arthritis & Rheumatology
https://www.readbyqxmd.com/read/29457327/electrochemical-exfoliation-of-pillared-layer-metal-organic-framework-for-boosting-the-oxygen-evolution-reaction
#16
Jin Huang, Yu Li, Rui-Kang Huang, Chun-Ting He, Li Gong, Qiong Hu, Lishi Wang, Yan-Tong Xu, Xiao-Yun Tian, Si-Yang Liu, Zi-Ming Ye, Fuxin Wang, Dong-Dong Zhou, Wei-Xiong Zhang, Jie-Peng Zhang
Having high surface areas and fully exposed active sites, two-dimensional (2D) materials and ultrathin nanosheets are advantageous for elevating the catalysis performance and elucidating the catalysis mechanism. 2D materials are mostly restricted to inorganic or organic materials based on covalent bonds, because strong bonding within two dimensions and weak interactions in the third dimension are beneficial to stabilize the 2D structure. Here, we report an electrochemical exfoliation strategy for synthesizing metal-organic 2D materials based on coordination bonds...
February 18, 2018: Angewandte Chemie
https://www.readbyqxmd.com/read/29457268/the-lymphoid-cell-network-in-the-skin
#17
REVIEW
Shweta Tikoo, Rohit Jain, Angela R M Kurz, Wolfgang Weninger
Cutaneous immunity represents a crucial component of the mammalian immune response. The presence of a large array of commensal microorganisms along with a myriad of environmental stresses necessitates constant immuno-surveillance of the tissue. To achieve a perfect balance between immune-tolerance and immune-activation, the skin harbours strategically localised immune cell populations that modulate these responses. To maintain homeostasis, innate and adaptive immune cells assimilate microenvironmental cues and coordinate cellular and molecular functions in a spatiotemporal manner...
February 19, 2018: Immunology and Cell Biology
https://www.readbyqxmd.com/read/29457226/coordination-and-trade-offs-among-hydraulic-safety-efficiency-and-drought-avoidance-traits-in-amazonian-rainforest-canopy-tree-species
#18
Louis S Santiago, Mark E De Guzman, Christopher Baraloto, Jacob E Vogenberg, Max Brodie, Bruno Hérault, Claire Fortunel, Damien Bonal
Predicting responses of tropical forests to climate change-type drought is challenging because of high species diversity. Detailed characterization of tropical tree hydraulic physiology is necessary to evaluate community drought vulnerability and improve model parameterization. Here, we measured xylem hydraulic conductivity (hydraulic efficiency), xylem vulnerability curves (hydraulic safety), sapwood pressure-volume curves (drought avoidance) and wood density on emergent branches of 14 common species of Eastern Amazonian canopy trees in Paracou, French Guiana across species with the densest and lightest wood in the plot...
February 19, 2018: New Phytologist
https://www.readbyqxmd.com/read/29457187/allosteric-regulation-of-metal-binding-sites-inside-an-optically-active-helical-foldamer-and-its-tubular-assemblies
#19
Satoshi Kawabata, Naoki Ousaka, Eiji Yashima
A helical foldamer possessing conformationally switchable metal-binding linkers underwent supramolecular polymerization to form a helical nanofiber. A reversible helix-to-helix transition of the helical nanofiber took place upon cooperative binding and release of Ag(i) ions via a metal-coordination-driven W-to-U-shape conformational change of the linkers in a positive allosteric manner.
February 19, 2018: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/29457171/exploiting-coordination-geometry-to-selectively-predict-the-%C3%AF-donor-and-%C3%AF-acceptor-abilities-of-ligands-a-back-and-forth-journey-between-electronic-properties-and-spectroscopy
#20
Marco Fusè, Isabella Rimoldi, Giorgio Facchetti, Sergio Rampino, Vincenzo Barone
Through an analysis of eighty tetrahedral and square-planar metal carbonyls of general formula [M(CO)(L')(L)2 ] including newly synthesized chlorocarbonyl rhodium complexes with chelating atropoisomeric diphosphanes, we show how coordination geometry can switch the carbonyl stretching frequency into a selective probe of the σ-donor and π-acceptor abilities of the ligands. We thus provide a framework whereby the σ-donation and π-backdonation constituents of the Dewar-Chatt-Duncanson model can be quantitatively predicted through spectroscopic data on coordinated CO moieties and vice versa...
February 19, 2018: Chemical Communications: Chem Comm
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