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https://www.readbyqxmd.com/read/29243480/reshaping-the-energy-landscape-transforms-the-mechanism-and-binding-kinetics-of-dna-threading-intercalation
#1
Andrew G Clark, M Nabuan Naufer, Fredrik Westerlund, Per Lincoln, Ioulia Rouzina, Thayaparan Paramanathan, Mark C Williams
Molecules that bind DNA via threading intercalation show high binding affinity as well as slow dissociation kinetics, properties ideal for the development of anticancer drugs. To this end, it is critical to identify the specific molecular characteristics of threading intercalators that result in optimal DNA interactions. Using single molecule techniques, we quantify the binding of a small metalorganic ruthenium threading intercalator (Δ,Δ-B), and compare its binding characteristics to a similar molecule with significantly larger threading moieties (Δ,Δ-P)...
December 15, 2017: Biochemistry
https://www.readbyqxmd.com/read/29241362/simplified-teixobactin-analogues-to-target-superbugs
#2
Ishwar Singh
Ishwar Singh speaks to Benjamin Walden, Commissioning Editor. Ishwar Singh is a Senior Lecturer in biological chemistry at the School of Pharmacy, University of Lincoln. Prior to Lincoln, he had held many prestigious fellowships such as the Alexander von Humboldt fellowship, Germany; and Senior Research Fellowship, DANIDA, Denmark and CSIR, India. He is an organic chemist. He has developed bioconjugations for DNA, RNA and polymer modifications. He is currently leading research in novel antimicrobials based on rational design against clinically important resistant bacteria (such as methicillin-resistant Staphylococcus aureus, vancomycin-resistant enterococci, mycobacteria, Klebsiella pneumoniae, Acinetobacter baumannii and Pseudomonas aeruginosa), biologics delivery, peptides, sequence-selective DNA cross linking, nanoparticles modifications for drug delivery and diagnostic applications...
December 15, 2017: Future Medicinal Chemistry
https://www.readbyqxmd.com/read/29233706/molecular-systematics-and-biogeography-of-lowland-antpittas-aves-grallariidae-the-role-of-vicariance-and-dispersal-in-the-diversification-of-a-widespread-neotropical-lineage
#3
Lincoln Carneiro, Gustavo A Bravo, Natalia Aristizábal, Andrés M Cuervo, Alexandre Aleixo
We infer phylogenetic relationships, divergence times, and the diversification history of the avian Neotropical antpitta genera Hylopezus and Myrmothera (Grallariidae), based on sequence data (3139 base pairs) from two mitochondrial (ND2 and ND3) and three nuclear markers (TGFB2, MUSK and FGB-I5) from 142 individuals of the 12 currently recognized species in Hylopezus and Myrmothera and 5 outgroup species. Phylogenetic analyses recovered 19 lineages clustered into two major clades, both distributed in Central and South America...
December 9, 2017: Molecular Phylogenetics and Evolution
https://www.readbyqxmd.com/read/29231838/china-s-silk-road-and-global-health
#4
REVIEW
Kun Tang, Zhihui Li, Wenkai Li, Lincoln Chen
In 2013, China proposed its Belt and Road Initiative to promote trade, infrastructure, and commercial associations with 65 countries in Asia, Africa, and Europe. This initiative contains important health components. Simultaneously, China launched an unprecedented overseas intervention against Ebola virus in west Africa, dispatching 1200 workers, including Chinese military personnel. The overseas development assistance provided by China has been increasing by 25% annually, reaching US$7 billion in 2013. Development assistance for health from China has particularly been used to develop infrastructure and provide medical supplies to Africa and Asia...
December 9, 2017: Lancet
https://www.readbyqxmd.com/read/29225117/rapid-response-events-in-hospitalized-patients-patient-symptoms-and-clinician-communication
#5
Charles A Austin, Summer Choudhury, Taylor Lincoln, Lydia H Chang, Christopher E Cox, Mark A Weaver, Laura C Hanson, Judith E Nelson, Shannon S Carson
CONTEXT: Patients triggering Rapid Response Team (RRT) intervention are at high risk for adverse outcomes. Data on symptom burden of these patients does not currently exist and current symptom management and communication practices of RRT clinicians are unknown. OBJECTIVES: We sought to identify the symptom experience of Rapid Response Team (RRT) patients and observe how RRT clinicians communicate with patients and their families. METHODS: We conducted a prospective, observational study from August - December 2015...
December 7, 2017: Journal of Pain and Symptom Management
https://www.readbyqxmd.com/read/29215652/corrigendum-sources-of-discordance-among-germ-line-variant-classifications-in-clinvar
#6
Shan Yang, Stephen E Lincoln, Yuya Kobayashi, Keith Nykamp, Robert L Nussbaum, Scott Topper
This corrects the article DOI: 10.1038/gim.2017.60.
December 7, 2017: Genetics in Medicine: Official Journal of the American College of Medical Genetics
https://www.readbyqxmd.com/read/29210002/tolerance-of-the-eriophyid-mite-aceria-salsolae-to-uv-a-light-and-implications-for-biological-control-of-russian-thistle
#7
Patrick J Moran, M Irene Wibawa, Lincoln Smith
Aceria salsolae (Acari: Eriophyidae) is being evaluated as a candidate biological control agent of Russian thistle (Salsola tragus, Chenopodiaceae), a major invasive weed of rangelands and dryland crops in the western USA. Prior laboratory host range testing under artificial lighting indicated reproduction on non-native Bassia hyssopifolia and on a native plant, Suaeda calceoliformis. However, in field tests in the native range, mite populations released on these 'nontarget' plants remained low. We hypothesized that UV-A light, which can affect behavior of tetranychid mites, would affect populations of the eriophyid A...
December 5, 2017: Experimental & Applied Acarology
https://www.readbyqxmd.com/read/29208716/direct-measurements-of-meltwater-runoff-on-the-greenland-ice-sheet-surface
#8
Laurence C Smith, Kang Yang, Lincoln H Pitcher, Brandon T Overstreet, Vena W Chu, Åsa K Rennermalm, Jonathan C Ryan, Matthew G Cooper, Colin J Gleason, Marco Tedesco, Jeyavinoth Jeyaratnam, Dirk van As, Michiel R van den Broeke, Willem Jan van de Berg, Brice Noël, Peter L Langen, Richard I Cullather, Bin Zhao, Michael J Willis, Alun Hubbard, Jason E Box, Brittany A Jenner, Alberto E Behar
Meltwater runoff from the Greenland ice sheet surface influences surface mass balance (SMB), ice dynamics, and global sea level rise, but is estimated with climate models and thus difficult to validate. We present a way to measure ice surface runoff directly, from hourly in situ supraglacial river discharge measurements and simultaneous high-resolution satellite/drone remote sensing of upstream fluvial catchment area. A first 72-h trial for a 63.1-km2 moulin-terminating internally drained catchment (IDC) on Greenland's midelevation (1,207-1,381 m above sea level) ablation zone is compared with melt and runoff simulations from HIRHAM5, MAR3...
December 5, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29206466/doping-of-self-catalyzed-nanowires-under-the-influence-of-droplets
#9
Yunyan Zhang, Zhiyuan Sun, Ana M Sanchez, Manfred Ramsteiner, Martin Aagesen, Jiang Wu, Dongyoung Kim, Pamela Jurczak, Suguo Huo, Lincoln J Lauhon, Huiyun Liu
Controlled and reproducible doping is essential for nanowires (NWs) to realize their functions. However, for the widely used self-catalyzed vapor-liquid-solid (VLS) growth mode, the doping mechanism is far from clear, as the participation of the nanoscale liquid phase makes the doping environment highly complex and significantly different from that of the thin film growth. Here, the doping mechanism of self-catalyzed NWs and the influence of self-catalytic droplets on the doping process are systematically studied using beryllium (Be) doped GaAs NWs...
December 5, 2017: Nano Letters
https://www.readbyqxmd.com/read/29203866/rpgrip1-is-required-for-rod-outer-segment-development-and-ciliary-protein-trafficking-in-zebrafish
#10
Rakesh K Raghupathy, Xun Zhang, Fei Liu, Reem H Alhasani, Lincoln Biswas, Saeed Akhtar, Luyuan Pan, Cecilia B Moens, Wenchang Li, Mugen Liu, Breandan N Kennedy, Xinhua Shu
Mutations in the RPGR-interacting protein 1 (RPGRIP1) gene cause recessive Leber congenital amaurosis (LCA), juvenile retinitis pigmentosa (RP) and cone-rod dystrophy. RPGRIP1 interacts with other retinal disease-causing proteins and has been proposed to have a role in ciliary protein transport; however, its function remains elusive. Here, we describe a new zebrafish model carrying a nonsense mutation in the rpgrip1 gene. Rpgrip1homozygous mutants do not form rod outer segments and display mislocalization of rhodopsin, suggesting a role for RPGRIP1 in rhodopsin-bearing vesicle trafficking...
December 4, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29199951/dephosphorylation-of-the-npr2-guanylyl-cyclase-contributes-to-inhibition-of-bone-growth-by-fibroblast-growth-factor
#11
Leia C Shuhaibar, Jerid W Robinson, Giulia Vigone, Ninna P Shuhaibar, Jeremy R Egbert, Valentina Baena, Tracy F Uliasz, Deborah Kaback, Siu-Pok Yee, Robert Feil, Melanie C Fisher, Caroline N Dealy, Lincoln R Potter, Laurinda A Jaffe
Activating mutations in fibroblast growth factor (FGF) receptor 3 and inactivating mutations in the NPR2 guanylyl cyclase both cause severe short stature, but how these two signaling systems interact to regulate bone growth is poorly understood. Here, we show that bone elongation is increased when NPR2 cannot be dephosphorylated and thus produces more cyclic GMP. By developing an in vivo imaging system to measure cyclic GMP production in intact tibia, we show that FGF-induced dephosphorylation of NPR2 decreases its guanylyl cyclase activity in growth plate chondrocytes in living bone...
December 4, 2017: ELife
https://www.readbyqxmd.com/read/29197841/haemorrhagic-conversion-of-infectious-myelitis-in-an-immunocompromised-patient
#12
Michael Stephen Pohlen, Jonathan Sunwei Lin, Kevin Yuqi Wang, Mohammad Ghasemi-Rad, Christie M Lincoln
A 28-year-old man recently diagnosed with HIV (CD4 19 cells/mm3, viral load 3.6 million copies/mL, not on highly active antiretroviral therapy on initial diagnosis at outside hospital), disseminated histoplasmosis, shingles and syphilis presented with paraplegia developing over 3 days. Spine MRI demonstrated a longitudinally extensive cord lesion extending from C3 to the tip of the conus. Brain MRI was consistent with meningoencephalitis. Cerebrospinal fluid findings were notable for positive varicella zoster virus (VZV) and cytomegalovirus (CMV) PCRs as well as a Venereal Disease Research Laboratory titre of 1:2...
December 2, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/29197724/follicular-response-and-oocyte-production-following-variations-in-ovarian-stimulation-in-goats
#13
Claudinéia Silva Mendes, Larissa Pires Barbosa, Monna Lopes de Araújo, Emmanuel Emydio Gomes Pinheiro, Maicon Pereira Lents, Lincoln da Silva Amorim, Cláudia Kazumi Kiya, Ana Lúcia Almeida Santana
In this study, goats were subjected to ovarian stimulation protocols to evaluate possible differences in ovarian follicular responses and oocyte production. Two experiments were conducted to assess the effects of hormonal protocol duration (seven or twelve days) and number of follicle stimulating hormone (FSH) applications (one or five doses). All animals received intravaginal sponges saturated with 60 mg medroxyprogesterone acetate and an application of 125 μg cloprostenol 72 h before the sponges were removed...
November 26, 2017: Theriogenology
https://www.readbyqxmd.com/read/29186425/conventional-and-hyperspectral-time-series-imaging-of-maize-lines-widely-used-in-field-trials
#14
Zhikai Liang, Piyush Pandey, Vincent Stoerger, Yuhang Xu, Yumou Qiu, Yufeng Ge, James C Schnable
Background: Maize (Zea mays ssp. mays) is one of three crops, along with rice and wheat, responsible for more than 1/2 of all calories consumed around the world. Increasing the yield and stress tolerance of these crops is essential to meet the growing need for food. The cost and speed of plant phenotyping is currently the largest constraint on plant breeding efforts. Datasets linking new types of high throughput phenotyping data collected from plants to the performance of the same genotypes under agronomic conditions across a wide range of environments are essential for developing new statistical approaches and computer vision based tools...
November 24, 2017: GigaScience
https://www.readbyqxmd.com/read/29186351/reactome-diagram-viewer-data-structures-and-strategies-to-boost-performance
#15
Antonio Fabregat, Konstantinos Sidiropoulos, Guilherme Viteri, Pablo Marin-Garcia, Peipei Ping, Lincoln Stein, Peter D'Eustachio, Henning Hermjakob
Motivation: Reactome is a free, open-source, open-data, curated and peer-reviewed knowledgebase of biomolecular pathways. For web-based pathway visualisation, Reactome uses a custom pathway diagram viewer that has been evolved over the past years. Here, we present comprehensive enhancements in usability and performance based on extensive usability testing sessions and technology developments, aiming to optimise the viewer towards the needs of the community. Results: The pathway diagram viewer version 3 achieves consistently better performance, loading and rendering of 97% of the diagrams in Reactome in less than 1 second...
November 23, 2017: Bioinformatics
https://www.readbyqxmd.com/read/29174437/neural-simulation-mechanisms-and-social-emotional-function-in-schizophrenia
#16
Cora E Mukerji, Sarah Hope Lincoln, Laura M Tully, David Dodell-Feder, Christine I Hooker
Impairment in simulation, i.e., the generation of internal representations of experiences, may contribute to social dysfunction in schizophrenia spectrum disorders (SZ). Using a novel fMRI task, we identified neural representations generated during simulation of sensorimotor experiences and evaluated their associations with socioemotional function in 19 individuals with SZ and 24 psychiatrically-healthy controls (HC). Participants watched videos depicting a painful sensorimotor experience in the hand or foot of another person and were then asked to imagine how unpleasant it would be to undergo that experience themselves, eliciting simulation...
October 24, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/29172957/exploring-holistic-comfort-in-children-who-experience-a-clinical-venipuncture-procedure
#17
April A Bice, Joanne Hall, Matthew J Devereaux
PURPOSE: Children often experience the uncomfortable effects of invasive procedures as a part of primary care and during times of illness. Holistic comfort has been well documented in adult literature but little research exists on the understanding of holistic procedural comfort from the child's perspective. In this study, holistic comfort related to an invasive venipuncture procedure was explored in children age 5 to 7 years and their caregivers of all ages. DESIGN: A qualitative descriptive design described by Sandelowski was used...
February 1, 2017: Journal of Holistic Nursing: Official Journal of the American Holistic Nurses' Association
https://www.readbyqxmd.com/read/29165610/gramene-2018-unifying-comparative-genomics-and-pathway-resources-for-plant-research
#18
Marcela K Tello-Ruiz, Sushma Naithani, Joshua C Stein, Parul Gupta, Michael Campbell, Andrew Olson, Sharon Wei, Justin Preece, Matthew J Geniza, Yinping Jiao, Young Koung Lee, Bo Wang, Joseph Mulvaney, Kapeel Chougule, Justin Elser, Noor Al-Bader, Sunita Kumari, James Thomason, Vivek Kumar, Daniel M Bolser, Guy Naamati, Electra Tapanari, Nuno Fonseca, Laura Huerta, Haider Iqbal, Maria Keays, Alfonso Munoz-Pomer Fuentes, Amy Tang, Antonio Fabregat, Peter D'Eustachio, Joel Weiser, Lincoln D Stein, Robert Petryszak, Irene Papatheodorou, Paul J Kersey, Patti Lockhart, Crispin Taylor, Pankaj Jaiswal, Doreen Ware
Gramene (http://www.gramene.org) is a knowledgebase for comparative functional analysis in major crops and model plant species. The current release, #54, includes over 1.7 million genes from 44 reference genomes, most of which were organized into 62,367 gene families through orthologous and paralogous gene classification, whole-genome alignments, and synteny. Additional gene annotations include ontology-based protein structure and function; genetic, epigenetic, and phenotypic diversity; and pathway associations...
November 20, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/29159842/struggle-and-failure-on-clinical-placement-a-critical-narrative-review
#19
REVIEW
Rachel Davenport, Sally Hewat, Alison Ferguson, Sue McAllister, Michelle Lincoln
BACKGROUND: Clinical placements are crucial to the development of skills and competencies in speech-language pathology (SLP) education and, more generally, a requirement of all health professional training programmes. Literature from medical education provides a context for understanding how the environment can be vital to all students' learning. Given the increasing costs of education and demands on health services, students who struggle or fail on clinical placement place an additional burden on educators...
November 21, 2017: International Journal of Language & Communication Disorders
https://www.readbyqxmd.com/read/29157343/cross-sectional-analysis-of-commonly-prescribed-medications-in-military-aviation
#20
Lincoln G Ropp, Sean P Haight, Michael B Prudhomme, Elizabeth L Ropp
BACKGROUND: Medication use by naval aviators, either prescription or over-the-counter, is not always relayed to the flight surgeon, resulting in unsafe flying environments. Many medications have debilitating effects that prohibit their use during aviation. Education and availability of resources on approved medications for flight status personnel is lacking. METHODS: A retrospective search of the Department of Defense Composite Health Care System (DoD CHCS) was conducted from five geographic locations...
December 1, 2017: Aerospace Medicine and Human Performance
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