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https://www.readbyqxmd.com/read/28499695/dapagliflozin-modulates-glucagon-secretion-in-an-sglt2-independent-manner-in-murine-alpha-cells
#1
A Solini, G Sebastiani, L Nigi, E Santini, C Rossi, F Dotta
AIM: SGLT2 inhibitors reduce renal glucose uptake through an insulin-independent mechanism. They also increase glucagon concentration, although the extent to which this is due to a direct effect on pancreatic alpha cells remains unclear. METHODS: In the present work, αTC1 cells treated with the SGLT2 inhibitor dapagliflozin (Dapa) were analyzed for glucose transporters, molecular mediators of hormone secretion, glucagon and GLP-1 release, and the effects of somatostatin...
May 9, 2017: Diabetes & Metabolism
https://www.readbyqxmd.com/read/28472940/runx2-repeat-variation-does-not-drive-craniofacial-diversity-in-marsupials
#2
Axel H Newton, Charles Y Feigin, Andrew J Pask
BACKGROUND: Runt-related transcription factor 2 (RUNX2) is a transcription factor essential for skeletal development. Variation within the RUNX2 polyglutamine / polyalanine (QA) repeat is correlated with facial length within orders of placental mammals and is suggested to be a major driver of craniofacial diversity. However, it is not known if this correlation exists outside of the placental mammals. RESULTS: Here we examined the correlation between the RUNX2 QA repeat ratio and facial length in the naturally evolving sister group to the placental mammals, the marsupials...
May 4, 2017: BMC Evolutionary Biology
https://www.readbyqxmd.com/read/28472794/prostaglandin-d2-regulates-sox9-nuclear-translocation-during-gonadal-sex-determination-in-tammar-wallaby-macropus-eugenii
#3
Yu Chen, Hongshi Yu, Andrew J Pask, Geoff Shaw, Marilyn B Renfree
Sex determination and sexual differentiation pathways are highly conserved between marsupials and eutherians. There are 2 different pathways of prostaglandin D2 (PGD2) synthesis: prostaglandin D synthase (PTGDS) and haematopoietic prostaglandin D synthase (HPGDS). PGD2 regulates the subcellular localization of SOX9 during gonadal sexual differentiation. To investigate the function of PGD2 in the tammar gonad, we cultured undifferentiated male gonads in the presence of the HPGDS inhibitor HQL-79 and female gonads with exogenous PGD2 to mimic activation of the PTGDS-PGD2 pathway...
May 5, 2017: Sexual Development: Genetics, Molecular Biology, Evolution, Endocrinology, Embryology, and Pathology of Sex Determination and Differentiation
https://www.readbyqxmd.com/read/28362736/single-longitudinal-mode-ring-diamond-raman-laser
#4
Ondrej Kitzler, Jipeng Lin, Helen M Pask, Richard P Mildren, Stephen C Webster, Nils Hempler, Graeme P A Malcolm, David J Spence
We demonstrate a single-longitudinal-mode ring diamond Raman laser, pumped by a tunable single-mode Ti:sapphire laser. Two methods to achieving unidirectional operation have been demonstrated: increasing gain for one direction using a reinjecting mirror and increasing loss for one direction using sum frequency mixing in BBO. Both methods result in a stable single-longitudinal-mode operation.
April 1, 2017: Optics Letters
https://www.readbyqxmd.com/read/28285168/design-and-use-of-mouse-control-dna-for-dna-biomarker-extraction-and-pcr-detection-from-urine-application-for-transrenal-mycobacterium-tuberculosis-dna-detection
#5
Hali Bordelon, Keersten M Ricks, Megan E Pask, Patricia K Russ, Francesca Solinas, Mark L Baglia, Philip A Short, Andrew Nel, Jonathan Blackburn, Keertan Dheda, Carlos Zamudio, Tatiana Cáceres, David W Wright, Frederick R Haselton, April C Pettit
Urine samples are increasingly used for diagnosing infections including Escherichia coli, Ebola virus, and Zika virus. However, extraction and concentration of nucleic acid biomarkers from urine is necessary for many molecular detection strategies such as polymerase chain reaction (PCR). Since urine samples typically have large volumes with dilute biomarker concentrations making them prone to false negatives, another impediment for urine-based diagnostics is the establishment of appropriate controls particularly to rule out false negatives...
May 2017: Journal of Microbiological Methods
https://www.readbyqxmd.com/read/28254554/the-extended-leader-peptide-of-haemophilus-parasuis-trimeric-autotransporters-conditions-their-protein-expression-in-escherichia-coli
#6
Sonia Pina-Pedrero, Àlex Olvera, Albert Bensaid
Trimeric autotransporters are surface-exposed proteins of Gram-negative bacteria belonging to the type V secretion system. They are involved in virulence and are targets for vaccine and diagnostic tool development, so optimal systems for their expression and purification are required. In the present study, the impact of the extended leader peptide of the Haemophilus parasuis virulence-associated trimeric autotransporters (VtaA) in its production as recombinant proteins in Escherichia coli was evaluated. The 13 genes encoding the VtaA1 to VtaA13 passenger domains of the strain Nagasaki were cloned in the pASK-IBA33plus plasmid and expressed in E...
February 28, 2017: Protein Expression and Purification
https://www.readbyqxmd.com/read/28241608/thz-polariton-laser-using-an-intracavity-mg-linbo-sub-3-sub-crystal-with-protective-teflon-coating
#7
Tiago A Ortega, Helen M Pask, David J Spence, Andrew J Lee
An enhancement in the performance of a THz polariton laser based on an intracavity magnesium-doped lithium niobate crystal (Mg:LiNbO<sub>3</sub>) in surface-emitted (SE) configuration is demonstrated resulting from the deposition of a protective Teflon coating on the total internal reflection surface of the crystal. In this cavity geometry the resonating fields undergo total internal reflection (TIR) inside the lithium niobate, and laser damage to that surface can be a limiting factor in performance...
February 20, 2017: Optics Express
https://www.readbyqxmd.com/read/28225184/bis-picolinamide-ruthenium-iii-dihalide-complexes-dichloride-to-diiodide-exchange-generates-single-trans-isomers-with-high-potency-and-cancer-cell-selectivity
#8
Aida M Basri, Rianne M Lord, Simon J Allison, Andrea Rodríguez-Bárzano, Stephanie J Lucas, Felix D Janeway, Helena J Shepherd, Christopher M Pask, Roger M Phillips, Patrick C McGowan
A library of new bis-picolinamide ruthenium(III) dihalide complexes of the type [RuX2 L2 ] (X=Cl or I, L=picolinamide) have been synthesised and characterised. The complexes exhibit different picolinamide ligand binding modes, whereby one ligand is bound (N,N) and the other bound (N,O). Structural studies revealed a mixture of cis and trans isomers for the [RuCl2 L2 ] complexes but upon a halide exchange reaction to yield [RuI2 L2 ], only single trans isomers were detected. High cytotoxic activity against human cancer cell lines was observed, with the potencies of some complexes similar to or better than cisplatin...
February 22, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28070282/the-database-of-the-predicts-projecting-responses-of-ecological-diversity-in-changing-terrestrial-systems-project
#9
Lawrence N Hudson, Tim Newbold, Sara Contu, Samantha L L Hill, Igor Lysenko, Adriana De Palma, Helen R P Phillips, Tamera I Alhusseini, Felicity E Bedford, Dominic J Bennett, Hollie Booth, Victoria J Burton, Charlotte W T Chng, Argyrios Choimes, David L P Correia, Julie Day, Susy Echeverría-Londoño, Susan R Emerson, Di Gao, Morgan Garon, Michelle L K Harrison, Daniel J Ingram, Martin Jung, Victoria Kemp, Lucinda Kirkpatrick, Callum D Martin, Yuan Pan, Gwilym D Pask-Hale, Edwin L Pynegar, Alexandra N Robinson, Katia Sanchez-Ortiz, Rebecca A Senior, Benno I Simmons, Hannah J White, Hanbin Zhang, Job Aben, Stefan Abrahamczyk, Gilbert B Adum, Virginia Aguilar-Barquero, Marcelo A Aizen, Belén Albertos, E L Alcala, Maria Del Mar Alguacil, Audrey Alignier, Marc Ancrenaz, Alan N Andersen, Enrique Arbeláez-Cortés, Inge Armbrecht, Víctor Arroyo-Rodríguez, Tom Aumann, Jan C Axmacher, Badrul Azhar, Adrián B Azpiroz, Lander Baeten, Adama Bakayoko, András Báldi, John E Banks, Sharad K Baral, Jos Barlow, Barbara I P Barratt, Lurdes Barrico, Paola Bartolommei, Diane M Barton, Yves Basset, Péter Batáry, Adam J Bates, Bruno Baur, Erin M Bayne, Pedro Beja, Suzan Benedick, Åke Berg, Henry Bernard, Nicholas J Berry, Dinesh Bhatt, Jake E Bicknell, Jochen H Bihn, Robin J Blake, Kadiri S Bobo, Roberto Bóçon, Teun Boekhout, Katrin Böhning-Gaese, Kevin J Bonham, Paulo A V Borges, Sérgio H Borges, Céline Boutin, Jérémy Bouyer, Cibele Bragagnolo, Jodi S Brandt, Francis Q Brearley, Isabel Brito, Vicenç Bros, Jörg Brunet, Grzegorz Buczkowski, Christopher M Buddle, Rob Bugter, Erika Buscardo, Jörn Buse, Jimmy Cabra-García, Nilton C Cáceres, Nicolette L Cagle, María Calviño-Cancela, Sydney A Cameron, Eliana M Cancello, Rut Caparrós, Pedro Cardoso, Dan Carpenter, Tiago F Carrijo, Anelena L Carvalho, Camila R Cassano, Helena Castro, Alejandro A Castro-Luna, Cerda B Rolando, Alexis Cerezo, Kim Alan Chapman, Matthieu Chauvat, Morten Christensen, Francis M Clarke, Daniel F R Cleary, Giorgio Colombo, Stuart P Connop, Michael D Craig, Leopoldo Cruz-López, Saul A Cunningham, Biagio D'Aniello, Neil D'Cruze, Pedro Giovâni da Silva, Martin Dallimer, Emmanuel Danquah, Ben Darvill, Jens Dauber, Adrian L V Davis, Jeff Dawson, Claudio de Sassi, Benoit de Thoisy, Olivier Deheuvels, Alain Dejean, Jean-Louis Devineau, Tim Diekötter, Jignasu V Dolia, Erwin Domínguez, Yamileth Dominguez-Haydar, Silvia Dorn, Isabel Draper, Niels Dreber, Bertrand Dumont, Simon G Dures, Mats Dynesius, Lars Edenius, Paul Eggleton, Felix Eigenbrod, Zoltán Elek, Martin H Entling, Karen J Esler, Ricardo F de Lima, Aisyah Faruk, Nina Farwig, Tom M Fayle, Antonio Felicioli, Annika M Felton, Roderick J Fensham, Ignacio C Fernandez, Catarina C Ferreira, Gentile F Ficetola, Cristina Fiera, Bruno K C Filgueiras, Hüseyin K Fırıncıoğlu, David Flaspohler, Andreas Floren, Steven J Fonte, Anne Fournier, Robert E Fowler, Markus Franzén, Lauchlan H Fraser, Gabriella M Fredriksson, Geraldo B Freire, Tiago L M Frizzo, Daisuke Fukuda, Dario Furlani, René Gaigher, Jörg U Ganzhorn, Karla P García, Juan C Garcia-R, Jenni G Garden, Ricardo Garilleti, Bao-Ming Ge, Benoit Gendreau-Berthiaume, Philippa J Gerard, Carla Gheler-Costa, Benjamin Gilbert, Paolo Giordani, Simonetta Giordano, Carly Golodets, Laurens G L Gomes, Rachelle K Gould, Dave Goulson, Aaron D Gove, Laurent Granjon, Ingo Grass, Claudia L Gray, James Grogan, Weibin Gu, Moisès Guardiola, Nihara R Gunawardene, Alvaro G Gutierrez, Doris L Gutiérrez-Lamus, Daniela H Haarmeyer, Mick E Hanley, Thor Hanson, Nor R Hashim, Shombe N Hassan, Richard G Hatfield, Joseph E Hawes, Matt W Hayward, Christian Hébert, Alvin J Helden, John-André Henden, Philipp Henschel, Lionel Hernández, James P Herrera, Farina Herrmann, Felix Herzog, Diego Higuera-Diaz, Branko Hilje, Hubert Höfer, Anke Hoffmann, Finbarr G Horgan, Elisabeth Hornung, Roland Horváth, Kristoffer Hylander, Paola Isaacs-Cubides, Hiroaki Ishida, Masahiro Ishitani, Carmen T Jacobs, Víctor J Jaramillo, Birgit Jauker, F Jiménez Hernández, McKenzie F Johnson, Virat Jolli, Mats Jonsell, S Nur Juliani, Thomas S Jung, Vena Kapoor, Heike Kappes, Vassiliki Kati, Eric Katovai, Klaus Kellner, Michael Kessler, Kathryn R Kirby, Andrew M Kittle, Mairi E Knight, Eva Knop, Florian Kohler, Matti Koivula, Annette Kolb, Mouhamadou Kone, Ádám Kőrösi, Jochen Krauss, Ajith Kumar, Raman Kumar, David J Kurz, Alex S Kutt, Thibault Lachat, Victoria Lantschner, Francisco Lara, Jesse R Lasky, Steven C Latta, William F Laurance, Patrick Lavelle, Violette Le Féon, Gretchen LeBuhn, Jean-Philippe Légaré, Valérie Lehouck, María V Lencinas, Pia E Lentini, Susan G Letcher, Qi Li, Simon A Litchwark, Nick A Littlewood, Yunhui Liu, Nancy Lo-Man-Hung, Carlos A López-Quintero, Mounir Louhaichi, Gabor L Lövei, Manuel Esteban Lucas-Borja, Victor H Luja, Matthew S Luskin, M Cristina MacSwiney G, Kaoru Maeto, Tibor Magura, Neil Aldrin Mallari, Louise A Malone, Patrick K Malonza, Jagoba Malumbres-Olarte, Salvador Mandujano, Inger E Måren, Erika Marin-Spiotta, Charles J Marsh, E J P Marshall, Eliana Martínez, Guillermo Martínez Pastur, David Moreno Mateos, Margaret M Mayfield, Vicente Mazimpaka, Jennifer L McCarthy, Kyle P McCarthy, Quinn S McFrederick, Sean McNamara, Nagore G Medina, Rafael Medina, Jose L Mena, Estefania Mico, Grzegorz Mikusinski, Jeffrey C Milder, James R Miller, Daniel R Miranda-Esquivel, Melinda L Moir, Carolina L Morales, Mary N Muchane, Muchai Muchane, Sonja Mudri-Stojnic, A Nur Munira, Antonio Muoñz-Alonso, B F Munyekenye, Robin Naidoo, A Naithani, Michiko Nakagawa, Akihiro Nakamura, Yoshihiro Nakashima, Shoji Naoe, Guiomar Nates-Parra, Dario A Navarrete Gutierrez, Luis Navarro-Iriarte, Paul K Ndang'ang'a, Eike L Neuschulz, Jacqueline T Ngai, Violaine Nicolas, Sven G Nilsson, Norbertas Noreika, Olivia Norfolk, Jorge Ari Noriega, David A Norton, Nicole M Nöske, A Justin Nowakowski, Catherine Numa, Niall O'Dea, Patrick J O'Farrell, William Oduro, Sabine Oertli, Caleb Ofori-Boateng, Christopher Omamoke Oke, Vicencio Oostra, Lynne M Osgathorpe, Samuel Eduardo Otavo, Navendu V Page, Juan Paritsis, Alejandro Parra-H, Luke Parry, Guy Pe'er, Peter B Pearman, Nicolás Pelegrin, Raphaël Pélissier, Carlos A Peres, Pablo L Peri, Anna S Persson, Theodora Petanidou, Marcell K Peters, Rohan S Pethiyagoda, Ben Phalan, T Keith Philips, Finn C Pillsbury, Jimmy Pincheira-Ulbrich, Eduardo Pineda, Joan Pino, Jaime Pizarro-Araya, A J Plumptre, Santiago L Poggio, Natalia Politi, Pere Pons, Katja Poveda, Eileen F Power, Steven J Presley, Vânia Proença, Marino Quaranta, Carolina Quintero, Romina Rader, B R Ramesh, Martha P Ramirez-Pinilla, Jai Ranganathan, Claus Rasmussen, Nicola A Redpath-Downing, J Leighton Reid, Yana T Reis, José M Rey Benayas, Juan Carlos Rey-Velasco, Chevonne Reynolds, Danilo Bandini Ribeiro, Miriam H Richards, Barbara A Richardson, Michael J Richardson, Rodrigo Macip Ríos, Richard Robinson, Carolina A Robles, Jörg Römbke, Luz Piedad Romero-Duque, Matthias Rös, Loreta Rosselli, Stephen J Rossiter, Dana S Roth, T'ai H Roulston, Laurent Rousseau, André V Rubio, Jean-Claude Ruel, Jonathan P Sadler, Szabolcs Sáfián, Romeo A Saldaña-Vázquez, Katerina Sam, Ulrika Samnegård, Joana Santana, Xavier Santos, Jade Savage, Nancy A Schellhorn, Menno Schilthuizen, Ute Schmiedel, Christine B Schmitt, Nicole L Schon, Christof Schüepp, Katharina Schumann, Oliver Schweiger, Dawn M Scott, Kenneth A Scott, Jodi L Sedlock, Steven S Seefeldt, Ghazala Shahabuddin, Graeme Shannon, Douglas Sheil, Frederick H Sheldon, Eyal Shochat, Stefan J Siebert, Fernando A B Silva, Javier A Simonetti, Eleanor M Slade, Jo Smith, Allan H Smith-Pardo, Navjot S Sodhi, Eduardo J Somarriba, Ramón A Sosa, Grimaldo Soto Quiroga, Martin-Hugues St-Laurent, Brian M Starzomski, Constanti Stefanescu, Ingolf Steffan-Dewenter, Philip C Stouffer, Jane C Stout, Ayron M Strauch, Matthew J Struebig, Zhimin Su, Marcela Suarez-Rubio, Shinji Sugiura, Keith S Summerville, Yik-Hei Sung, Hari Sutrisno, Jens-Christian Svenning, Tiit Teder, Caragh G Threlfall, Anu Tiitsaar, Jacqui H Todd, Rebecca K Tonietto, Ignasi Torre, Béla Tóthmérész, Teja Tscharntke, Edgar C Turner, Jason M Tylianakis, Marcio Uehara-Prado, Nicolas Urbina-Cardona, Denis Vallan, Adam J Vanbergen, Heraldo L Vasconcelos, Kiril Vassilev, Hans A F Verboven, Maria João Verdasca, José R Verdú, Carlos H Vergara, Pablo M Vergara, Jort Verhulst, Massimiliano Virgilio, Lien Van Vu, Edward M Waite, Tony R Walker, Hua-Feng Wang, Yanping Wang, James I Watling, Britta Weller, Konstans Wells, Catrin Westphal, Edward D Wiafe, Christopher D Williams, Michael R Willig, John C Z Woinarski, Jan H D Wolf, Volkmar Wolters, Ben A Woodcock, Jihua Wu, Joseph M Wunderle, Yuichi Yamaura, Satoko Yoshikura, Douglas W Yu, Andrey S Zaitsev, Juliane Zeidler, Fasheng Zou, Ben Collen, Rob M Ewers, Georgina M Mace, Drew W Purves, Jörn P W Scharlemann, Andy Purvis
The PREDICTS project-Projecting Responses of Ecological Diversity In Changing Terrestrial Systems (www.predicts.org.uk)-has collated from published studies a large, reasonably representative database of comparable samples of biodiversity from multiple sites that differ in the nature or intensity of human impacts relating to land use. We have used this evidence base to develop global and regional statistical models of how local biodiversity responds to these measures. We describe and make freely available this 2016 release of the database, containing more than 3...
January 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28043016/flutamide-induced-hypospadias-in-rats-a-critical-assessment
#10
Adriane Watkins Sinclair, Mei Cao, Andrew Pask, Laurence Baskin, Gerald R Cunha
This paper provides the first detailed description of flutamide-induced hypospadias in the rat based upon wholemount, histologic, three-dimensional reconstruction, scanning electron microscopic, and immunocytochemical analysis. The penile malformations elicited by this potent anti-androgen include a substantial proximal shift in the urethral meatus that clearly conforms to the definition of hypospadias based upon specific morphological criteria for this malformation. Through examination of the normal penile development and flutamide-induced abnormal penile development observed in prenatally oil- and flutamide-treated rats, our analysis provides insights into the morphogenetic mechanism of development of hypospadias...
December 30, 2016: Differentiation; Research in Biological Diversity
https://www.readbyqxmd.com/read/27980120/production-and-characterization-of-functional-recombinant-hybrid-heteropolymers-of-camel-hepcidin-and-human-ferritin-h-and-l-chains
#11
Mohamed Boumaiza, Fernando Carmona, Maura Poli, Michela Asperti, Alessandra Gianoncelli, Michela Bertuzzi, Paola Ruzzenenti, Paolo Arosio, Mohamed Nejib Marzouki
Hepcidin is a liver-synthesized hormone that plays a central role in the regulation of systemic iron homeostasis. To produce a new tool for its functional properties the cDNA coding for camel hepcidin-25 was cloned at the 5'end of human FTH sequence into the pASK-IBA43plus vector for expression in Escherichia coli The recombinant fusion hepcidin-ferritin-H subunit was isolated as an insoluble iron-containing protein. When alone it did not refold in a 24-mer ferritin molecule, but it did when renatured together with H- or L-ferritin chains...
February 2017: Protein Engineering, Design & Selection: PEDS
https://www.readbyqxmd.com/read/27894968/crystallographic-structure-intermolecular-packing-energetics-crystal-morphology-and-surface-chemistry-of-salmeterol-xinafoate-form-i
#12
Alexandru A Moldovan, Ian Rosbottom, Vasuki Ramachandran, Christopher M Pask, Oboroghene Olomukhoro, Kevin J Roberts
Single crystals of salmeterol xinafoate (form I), prepared from slow cooled supersaturated propan-2-ol solutions, crystallize in a triclinic P1¯ symmetry with 2 closely related independent salt pairs within the asymmetric unit, with an approximately double-unit cell volume compared with the previously published crystal structure. Synthonic analysis of the bulk intermolecular packing confirms the similarity in packing energetics between the 2 salt pairs. The strongest synthons, as expected, are dominated by coulombic interactions...
November 26, 2016: Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/27884327/inhibition-of-c-jun-n-terminal-kinase-signaling-suppresses-skin-flap-apoptosis-in-a-rat-ischemia-and-or-reperfusion-model
#13
Ming Bai, Yifang Liu, Dechang Yin, Mingzi Zhang, Youbin Wang, Xuemei Ma, Yunqi Liu, Pengxiang Zhao
BACKGROUND: The goals of this study were to validate the role of c-Jun N-terminal kinase (JNK) activation in skin flap apoptosis in a rat model of abdomen skin ischemia and/or reperfusion (IR) and to compare the protective effect of SP600125 and hydrogen-rich saline in skin IR injury. METHODS: Male Sprague-Dawley rats were divided into five groups: one sham surgery group and four surgery groups. Before undergoing 3 h of IR management, the surgery groups were treated with normal saline (IR), dimethyl sulfoxide, SP600125 (SP), and hydrogen-rich saline (H)...
December 2016: Journal of Surgical Research
https://www.readbyqxmd.com/read/27802034/structural-studies-of-perfluoroaryldiselenadiazolyl-radicals-insights-into-dithiadiazolyl-chemistry
#14
Rebecca L Melen, Robert J Less, Christopher M Pask, Jeremy M Rawson
The synthesis and structural characterization of a series of perfluoroaryldiselenadiazolyls [DSeDA; p-XC6F4CNSeSeN (X = F, Cl, Br, CF3, NO2, and CN for 2a-2f, respectively)] are described. Concentration-dependent solution UV/vis measurements on 2a follow the Beer-Lambert law and the transitions assigned through time-dependent density functional theory (TD-DFT) studies, indicating little propensity for dimerization in solution (10(-3)-10(-4) M). Solution electron paramagnetic resonance (EPR) spectra reveal that these radicals exhibit a broad featureless singlet around g = 2...
November 21, 2016: Inorganic Chemistry
https://www.readbyqxmd.com/read/27782453/chebyshev-polynomial-filtered-subspace-iteration-in-the-discontinuous-galerkin-method-for-large-scale-electronic-structure-calculations
#15
Amartya S Banerjee, Lin Lin, Wei Hu, Chao Yang, John E Pask
The Discontinuous Galerkin (DG) electronic structure method employs an adaptive local basis (ALB) set to solve the Kohn-Sham equations of density functional theory in a discontinuous Galerkin framework. The adaptive local basis is generated on-the-fly to capture the local material physics and can systematically attain chemical accuracy with only a few tens of degrees of freedom per atom. A central issue for large-scale calculations, however, is the computation of the electron density (and subsequently, ground state properties) from the discretized Hamiltonian in an efficient and scalable manner...
October 21, 2016: Journal of Chemical Physics
https://www.readbyqxmd.com/read/27661449/pask-integrates-hormonal-signaling-with-histone-modification-via-wdr5-phosphorylation-to-drive-myogenesis
#16
Chintan K Kikani, Xiaoying Wu, Litty Paul, Hana Sabic, Zuolian Shen, Arvind Shakya, Alexandra Keefe, Claudio Villanueva, Gabrielle Kardon, Barbara Graves, Dean Tantin, Jared Rutter
PAS domain containing protein kinase (Pask) is an evolutionarily conserved protein kinase implicated in energy homeostasis and metabolic regulation across eukaryotic species. We now describe an unexpected role of Pask in promoting the differentiation of myogenic progenitor cells, embryonic stem cells and adipogenic progenitor cells. This function of Pask is dependent upon its ability to phosphorylate Wdr5, a member of several protein complexes including those that catalyze histone H3 Lysine 4 trimethylation (H3K4me3) during transcriptional activation...
September 23, 2016: ELife
https://www.readbyqxmd.com/read/27628410/tunable-terahertz-generation-in-the-picosecond-regime-from-the-stimulated-polariton-scattering-in-a-linbo-sub-3-sub-crystal
#17
Aravindan M Warrier, Ran Li, Jipeng Lin, Andrew J Lee, Helen M Pask, David J Spence
We demonstrate narrowband tunable terahertz generation from a picosecond LiNbO<sub>3</sub> polariton laser, pumped by a CW mode-locked Nd:YVO<sub>4</sub> picosecond laser. We generated up to 5.4 μW of terahertz output in untuned mode. We tuned the terahertz output, using etalons in the cavity, from 0.51 to 2.12 THz. Terahertz output powers of 3.7 μW and 2.4 μW were achieved at terahertz frequencies of 1.6 THz and 0.9 THz, respectively.
September 15, 2016: Optics Letters
https://www.readbyqxmd.com/read/27441848/chelating-n-heterocyclic-carbene-carboranes-offer-flexible-ligand-coordination-to-ir-iii-rh-iii-and-ru-ii-effect-of-ligand-cyclometallation-in-catalytic-transfer-hydrogenation
#18
Jordan Holmes, Christopher M Pask, Charlotte E Willans
Imidazolium salts linked by an ethyl tether to closo-dicarbadodecaboranes were reacted with [IrCp*Cl2]2, [RhCp*Cl2]2 or [Ru(p-cymene)Cl2]2 in the presence of Ag2O to prepare complexes of the type [MCp*(NHC)Cl2] (M = Ir, Rh; NHC = N-heterocyclic carbene) or [Ru(p-cymene)(NHC)Cl2]. When the NHC contained an N-(t)Bu substituent, C-H activation of the (t)Bu and subsequent alkyl coordination was observed at Ir. Coordination of the closo-dicarbadodecaborane moiety to Ir was possible to give 7-membered metallacycles, coordinated through the carbenic carbon of the NHC and either a carbon atom or a boron atom of the carborane...
October 12, 2016: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/27418509/has-land-use-pushed-terrestrial-biodiversity-beyond-the-planetary-boundary-a-global-assessment
#19
Tim Newbold, Lawrence N Hudson, Andrew P Arnell, Sara Contu, Adriana De Palma, Simon Ferrier, Samantha L L Hill, Andrew J Hoskins, Igor Lysenko, Helen R P Phillips, Victoria J Burton, Charlotte W T Chng, Susan Emerson, Di Gao, Gwilym Pask-Hale, Jon Hutton, Martin Jung, Katia Sanchez-Ortiz, Benno I Simmons, Sarah Whitmee, Hanbin Zhang, Jörn P W Scharlemann, Andy Purvis
Land use and related pressures have reduced local terrestrial biodiversity, but it is unclear how the magnitude of change relates to the recently proposed planetary boundary ("safe limit"). We estimate that land use and related pressures have already reduced local biodiversity intactness--the average proportion of natural biodiversity remaining in local ecosystems--beyond its recently proposed planetary boundary across 58.1% of the world's land surface, where 71.4% of the human population live. Biodiversity intactness within most biomes (especially grassland biomes), most biodiversity hotspots, and even some wilderness areas is inferred to be beyond the boundary...
July 15, 2016: Science
https://www.readbyqxmd.com/read/27417660/cytotoxic-hydrogen-bridged-ruthenium-quinaldamide-complexes-showing-induced-cancer-cell-death-by-apoptosis
#20
Rianne M Lord, Simon J Allison, Karen Rafferty, Laura Ghandhi, Christopher M Pask, Patrick C McGowan
This report presents the first known p-cymene ruthenium quinaldamide complexes which are stabilised by a hydrogen-bridging atom, [{(p-cym)Ru(II)X(N,N)}{H(+)}{(N,N)XRu(II)(p-cym)}][PF6] (N,N = functionalised quinaldamide and X = Cl or Br). These complexes are formed by a reaction of [p-cymRu(μ-X)2]2 with a functionalised quinaldamide ligand. When filtered over NH4PF6, and under aerobic conditions the equilibrium of NH4PF6 ⇔ NH3 + HPF6 enables incorporation of HPF6 and the stabilisation of two monomeric ruthenium complexes by a bridging H(+), which are counter-balanced by a PF6 counterion...
August 16, 2016: Dalton Transactions: An International Journal of Inorganic Chemistry
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Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"