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James Cooper

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https://www.readbyqxmd.com/read/29350923/casscf-calculations-reveal-competitive-chair-pericyclic-and-boat-pseudopericyclic-transition-states-for-the-3-3-sigmatropic-rearrangement-of-allyl-esters
#1
Henry W Kreiman, Mackenzie E Batali, Cooper Jamieson, Molly A Lyon, James Alan Duncan
(10,8)CASPT2/6-31G**//(10,8)CASSCF/6-31G** calculations have been performed on the potential surface for the [3,3] sigmatropic allyl ester rearrangements of cis-3-penten-2-yl acetate (16) to trans-3-penten-2-yl acetate (17) and 3-buten-2-yl acetate (21) to trans-2-buten-1-yl acetate (22). The results are compared to DFT (B3LYP/6-31G**) calculations on the known 16→17 rearrangement that reported it to be concerted and pseudopericyclic through a boat-shaped transition structure (Birney, D. M. et al. J. Am. Chem...
January 19, 2018: Journal of Organic Chemistry
https://www.readbyqxmd.com/read/29348251/reducing-cardiovascular-disparities-through-community-engaged-implementation-research-a-national-heart-lung-and-blood-institute-workshop-report
#2
George A Mensah, Richard S Cooper, Anna Maria Siega-Riz, Lisa A Cooper, Justin D Smith, C Hendricks Brown, John M Westfall, Elizabeth O Ofili, LeShawndra N Price, Sonia Arteaga, Melissa C Green Parker, Cheryl R Nelson, Bradley J Newsome, Nicole Redmond, Rebecca A Roper, Bettina M Beech, Jada L Brooks, Debra Furr-Holden, Samson Y Gebreab, Wayne H Giles, Regina Smith James, Tené T Lewis, Ali H Mokdad, Kari D Moore, Joseph E Ravenell, Al Richmond, Nancy E Schoenberg, Mario Sims, Gopal K Singh, Anne E Sumner, Roberto P Treviño, Karriem S Watson, M Larissa Avilés-Santa, Jared P Reis, Charlotte A Pratt, Michael M Engelgau, David C Goff, Eliseo J Pérez-Stable
Cardiovascular disparities remain pervasive in the United States. Unequal disease burden is evident among population groups based on sex, race, ethnicity, socioeconomic status, educational attainment, nativity, or geography. Despite the significant declines in cardiovascular disease mortality rates in all demographic groups during the last 50 years, large disparities remain by sex, race, ethnicity, and geography. Recent data from modeling studies, linked micromap plots, and small-area analyses also demonstrate prominent variation in cardiovascular disease mortality rates across states and counties, with an especially high disease burden in the southeastern United States and Appalachia...
January 19, 2018: Circulation Research
https://www.readbyqxmd.com/read/29344583/heterozygous-rtel1-variants-in-bone-marrow-failure-and-myeloid-neoplasms
#3
Judith C W Marsh, Fernanda Gutierrez-Rodrigues, James Cooper, Jie Jiang, Shreyans Gandhi, Sachiko Kajigaya, Xingmin Feng, Maria Del Pilar F Ibanez, Flávia S Donaires, João P Lopes da Silva, Zejuan Li, Soma Das, Maria Ibanez, Alexander E Smith, Nicholas Lea, Steven Best, Robin Ireland, Austin G Kulasekararaj, Donal P McLornan, Anthony Pagliuca, Isabelle Callebaut, Neal S Young, Rodrigo T Calado, Danielle M Townsley, Ghulam J Mufti
Biallelic germline mutations in RTEL1 (regulator of telomere elongation helicase 1) result in pathologic telomere erosion and cause dyskeratosis congenita. However, the role of RTEL1 mutations in other bone marrow failure (BMF) syndromes and myeloid neoplasms, and the contribution of monoallelic RTEL1 mutations to disease development are not well defined. We screened 516 patients for germline mutations in telomere-associated genes by next-generation sequencing in 2 independent cohorts; one constituting unselected patients with idiopathic BMF, unexplained cytopenia, or myeloid neoplasms (n = 457) and a second cohort comprising selected patients on the basis of the suspicion of constitutional/familial BMF (n = 59)...
January 9, 2018: Blood Advances
https://www.readbyqxmd.com/read/29343687/mechanically-sensitive-mirnas-bias-human-mesenchymal-stem-cell-fate-via-mtor-signalling
#4
Jessica E Frith, Gina D Kusuma, James Carthew, Fanyi Li, Nicole Cloonan, Guillermo A Gomez, Justin J Cooper-White
Mechanotransduction is a strong driver of mesenchymal stem cell (MSC) fate. In vitro, variations in matrix mechanics invoke changes in MSC proliferation, migration and differentiation. However, when incorporating MSCs within injectable, inherently soft hydrogels, this dominance over MSC response substantially limits our ability to couple the ease of application of hydrogels with efficiently directed MSC differentiation, especially in the case of bone generation. Here, we identify differential miRNA expression in response to varying hydrogel stiffness and RhoA activity...
January 17, 2018: Nature Communications
https://www.readbyqxmd.com/read/29341173/strigolactones-positively-regulate-chilling-tolerance-in-pea-and-in-arabidopsis
#5
James W Cooper, Yan Hu, Leila Beyyoudh, H Yildiz Dasgan, Karl Kunert, Christine A Beveridge, Christine H Foyer
Strigolactones (SL) fulfil important roles in plant development and stress tolerance. Here we characterised the role of SL in the dark chilling tolerance of pea and Arabidopsis by analysis of mutants that are defective in either SL synthesis or signalling. Pea mutants (rms3, rms4, rms5) had significantly greater shoot branching with higher leaf chlorophyll a/b ratios and carotenoid contents than the wild type. Exposure to dark chilling significantly decreased shoot fresh weights but increased leaf numbers in all lines...
January 17, 2018: Plant, Cell & Environment
https://www.readbyqxmd.com/read/29336558/excited-state-processes-of-cyclometalated-platinum-ii-charge-transfer-dimers-bridged-by-hydroxypyridines
#6
Arnab Chakraborty, James E Yarnell, Roger D Sommer, Subhangi Roy, Felix N Castellano
A series of four anti-disposed dinuclear platinum(II) complexes featuring metal-metal-to-ligand charge-transfer (MMLCT) excited states, bridged by either 2-hydroxy-6-methylpyridine or 2-hydroxy-6-phenylpyridine and cyclometalated with 7,8-benzoquinoline or 2-phenylpyridine, are presented. The 2-hydroxypyridine bridging ligands control intramolecular d8-d8 metal-metal σ interactions, affecting the frontier orbitals' electronic structure, resulting in marked changes to the ground- and excited-state properties of these complexes...
January 16, 2018: Inorganic Chemistry
https://www.readbyqxmd.com/read/29331668/earlier-and-enhanced-rehabilitation-of-mechanically-ventilated-patients-in-critical-care-a-feasibility-randomised-controlled-trial
#7
David McWilliams, Charlotte Jones, Gemma Atkins, James Hodson, Tony Whitehouse, Tonny Veenith, Emma Reeves, Lauren Cooper, Catherine Snelson
BACKGROUND: Systematic reviews of early rehabilitation within intensive care units have highlighted the need for robust multi-centre randomised controlled trials with longer term follow up. This trial aims to explore the feasibility of earlier and enhanced rehabilitation for patients mechanically ventilated for ≥5days and to assess the impact on possible long term outcome measures for use in a definitive trial. METHODS: Patients admitted to a large UK based intensive care unit and invasively ventilated for ≥5days were randomised to the rehabilitation intervention or standard care on a 1:1 basis, stratified by age and SOFA score...
January 4, 2018: Journal of Critical Care
https://www.readbyqxmd.com/read/29328001/gamma-knife-radiosurgery-of-saccular-aneurysms-in-a-rabbit-model
#8
Mark D Meadowcroft, Timothy K Cooper, Sebastian Rupprecht, Thaddeus C Wright, Elizabeth E Neely, Michele Ferenci, Weimin Kang, Qing X Yang, Robert E Harbaugh, James R Connor, James McInerney
OBJECTIVE Intracranial aneurysms are vascular abnormalities associated with neurological morbidity and mortality due to risk of rupture. In addition, many aneurysm treatments have associated risk profiles that can preclude the prophylactic treatment of asymptomatic lesions. Gamma Knife radiosurgery (GKRS) is a standard treatment for trigeminal neuralgia, tumors, and arteriovenous malformations. Aneurysms associated with arteriovenous malformations have been noted to resolve after treatment of the malformation...
January 12, 2018: Journal of Neurosurgery
https://www.readbyqxmd.com/read/29326869/prenatal-methadone-exposure-is-associated-with-altered-neonatal-brain-development
#9
Victoria J Monnelly, Devasuda Anblagan, Alan Quigley, Manuel Blesa Cabez, E Sarah Cooper, Helen Mactier, Scott I Semple, Mark E Bastin, James P Boardman
Methadone is used for medication-assisted treatment of heroin addiction during pregnancy. The neurodevelopmental outcome of children with prenatal methadone exposure can be sub-optimal. We tested the hypothesis that brain development is altered among newborn infants whose mothers were prescribed methadone. 20 methadone-exposed neonates born after 37 weeks' postmenstrual age (PMA) and 20 non-exposed controls underwent diffusion MRI at mean PMA of 39+ 2 and 41+ 1 weeks, respectively. An age-optimized Tract-based Spatial Statistics (TBSS) pipeline was used to perform voxel-wise statistical comparison of fractional anisotropy (FA) data between exposed and non-exposed neonates...
2018: NeuroImage: Clinical
https://www.readbyqxmd.com/read/29319889/epitope-targeted-macrocyclic-peptide-ligand-with-picomolar-cooperative-binding-to-interleukin-17f
#10
Bert T Lai, Jeré A Wilson, Jacquie Malette Loredo, Suresh M Pitram, Nicole A LaBerge, James R Heath, Heather Agnew
The IL-17 cytokine family is associated with multiple immune and autoimmune diseases and comprises important diagnostic and therapeutic targets. We developed epitope-targeted ligands designed for differential detection of human IL-17F and its closest homologue IL-17A. Non-overlapping and unique epitopes on IL-17F and IL-17A were identified by comparative sequence analysis of the two proteins. Synthetic variants of these epitopes were utilized as targets for in situ click screens against a comprehensive library of synthetic peptide macrocycles with 5-mer variable regions...
January 10, 2018: Chemistry: a European Journal
https://www.readbyqxmd.com/read/29317539/reply-to-de-dreu-shared-partner-nationality-promotes-ingroup-favoritism-in-cooperation
#11
Angelo Romano, Daniel Balliet, Toshio Yamagishi, James H Liu
No abstract text is available yet for this article.
January 9, 2018: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29311154/erratum-maternal-bmi-and-glycemia-impact-the-fetal-metabolome-diabetes-care-2017-40-902-910
#12
William L Lowe, James R Bain, Michael Nodzenski, Anna C Reisetter, Michael J Muehlbauer, Robert D Stevens, Olga R Ilkayeva, Lynn P Lowe, Boyd E Metzger, Christopher B Newgard, Denise M Scholtens
No abstract text is available yet for this article.
January 8, 2018: Diabetes Care
https://www.readbyqxmd.com/read/29303524/multiple-binding-modes-of-an-unconjugated-bis-pyridine-ligand-stabilize-low-valent-cp-rh-complexes
#13
Davide Lionetti, Victor W Day, Benedikt Lassalle-Kaiser, James D Blakemore
The ligand 2,2'-bipyridine (bpy) can support metal centers in low formal oxidation states by delocalization of electron density into its π-system. We show that, in a model rhodium complex supported by the pentamethylcyclopentadienyl ligand (Cp*), the analogous dimethyldipyridylmethane ligand (Me2dpma) enforces a bpy-like coordination environment but disrupts the inter-ring conjugation responsible for charge delocalization upon metal reduction. As a result, reduction proceeds in discrete one-electron steps (Rh(iii) to Rh(ii) to Rh(i)), contrasting with the 2e- chemistry engendered by bpy...
January 5, 2018: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/29299123/inhibition-of-sdf-1-induced-migration-of-oncogene-driven-myeloid-leukemia-by-the-l-rna-aptamer-spiegelmer-nox-a12-and-potentiation-of-tyrosine-kinase-inhibition
#14
Ellen L Weisberg, Martin Sattler, Abdel Kareem Azab, Dirk Eulberg, Anna Kruschinski, Paul W Manley, Richard Stone, James D Griffin
Resistance to targeted tyrosine kinase inhibitors (TKI) remains a challenge for the treatment of myeloid leukemias. Following treatment with TKIs, the bone marrow microenvironment has been found to harbor a small pool of surviving leukemic CD34+ progenitor cells. The long-term survival of these leukemic cells has been attributed, at least in part, to the protective effects of bone marrow stroma. We found that the NOX-A12 'Spiegelmer', an L-enantiomeric RNA oligonucleotide that inhibits SDF-1α, showed in vitro and in vivo activity against BCR-ABL- and FLT3-ITD-dependent leukemia cells...
December 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/29297404/tithing-programs-pathways-for-enhancing-and-improving-the-health-status-of-the-underprivileged
#15
James K Elrod, John L Fortenberry
BACKGROUND: While quick and easy access to healthcare services is a reality for some, others experience significant hardships, even for receipt of the most basic health and medical care and attention. To those who effectively have been shut out of the healthcare marketplace due largely to economic deficiencies, healthcare providers engaged in the delivery of charitable services are a critical lifeline. Myriad attempts by governmental entities to remedy disparate access and shore up the delivery of healthcare services directed toward the disadvantaged have failed to close gaps, warranting pursuit of novel methods that offer potential and the hope that sufficient access might one day become a reality...
December 13, 2017: BMC Health Services Research
https://www.readbyqxmd.com/read/29295893/online-tobacco-marketing-and-subsequent-tobacco-use
#16
Samir Soneji, JaeWon Yang, Kristin E Knutzen, Meghan Bridgid Moran, Andy S L Tan, James Sargent, Kelvin Choi
BACKGROUND: Nearly 2.9 million US adolescents engaged with online tobacco marketing in 2013 to 2014. We assess whether engagement is a risk factor for tobacco use initiation, increased frequency of use, progression to poly-product use, and cessation. METHODS: We analyzed data from 11 996 adolescents sampled in the nationally representative, longitudinal Population Assessment for Tobacco and Health study. At baseline (2013-2014), we ascertained respondents' engagement with online tobacco marketing...
January 2, 2018: Pediatrics
https://www.readbyqxmd.com/read/29290488/crystal-structure-of-bicc1-sam-polymer-and-mapping-of-interactions-between-the-ciliopathy-associated-proteins-bicc1-anks3-and-anks6
#17
Benjamin Rothé, Catherine N Leettola, Lucia Leal-Esteban, Duilio Cascio, Simon Fortier, Manuela Isenschmid, James U Bowie, Daniel B Constam
Head-to-tail polymers of sterile alpha motifs (SAM) can scaffold large macromolecular complexes. Several SAM-domain proteins that bind each other are mutated in patients with cystic kidneys or laterality defects, including the Ankyrin (ANK) and SAM domain-containing proteins ANKS6 and ANKS3, and the RNA-binding protein Bicc1. To address how their interactions are regulated, we first determined a high-resolution crystal structure of a Bicc1-SAM polymer, revealing a canonical SAM polymer with a high degree of flexibility in the subunit interface orientations...
December 26, 2017: Structure
https://www.readbyqxmd.com/read/29290333/technology-assisted-hip-and-knee-arthroplasties-an-analysis-of-utilization-trends
#18
Matthew Boylan, Kelly Suchman, Jonathan Vigdorchik, James Slover, Joseph Bosco
BACKGROUND: Robotic and computer navigation technology is available to surgeons for use in hip and knee arthroplasties to increase the precision of component placement. However, they do add significant costs to these procedures, and the long-term clinical outcomes and value of technology assistance for joint replacement remain unclear. METHODS: We identified 321,522 patients in Medicare Severity Diagnosis Related Groups 469 and 470 who underwent primary total hip arthroplasty (N = 133,472) or primary total or unicompartmental knee arthroplasty (N = 188,050) between 2008 and 2015 in the New York Statewide Planning and Research Cooperative System (SPARCS)...
November 29, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/29287870/postoperative-bradycardia-following-adenotonsillectomy-in-children-does-intraoperative-administration-of-dexmedetomidine-play-a-role
#19
Benjamin Bush, Joseph D Tobias, Chen Lin, James Ruda, Kris R Jatana, Garth Essig, Jennifer Cooper, Dmitry Tumin, Charles A Elmaraghy
INTRODUCTION: Dexmedetomidine is a novel pharmacologic agent that has become a frequently used adjunct during care of pediatric patients with obstructive sleep apnea (OSA) undergoing tonsillectomy. While generally safe and effective, dexmedetomidine is associated with adverse effects of hypotension and bradycardia from its central sympatholytic effects. Due to safety concerns, our institution routinely admits patients with OSA for overnight cardiorespiratory monitoring following tonsillectomy...
January 2018: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/29287587/simulations-for-designing-and-interpreting-intervention-trials-in-infectious-diseases
#20
M Elizabeth Halloran, Kari Auranen, Sarah Baird, Nicole E Basta, Steven E Bellan, Ron Brookmeyer, Ben S Cooper, Victor DeGruttola, James P Hughes, Justin Lessler, Eric T Lofgren, Ira M Longini, Jukka-Pekka Onnela, Berk Özler, George R Seage, Thomas A Smith, Alessandro Vespignani, Emilia Vynnycky, Marc Lipsitch
BACKGROUND: Interventions in infectious diseases can have both direct effects on individuals who receive the intervention as well as indirect effects in the population. In addition, intervention combinations can have complex interactions at the population level, which are often difficult to adequately assess with standard study designs and analytical methods. DISCUSSION: Herein, we urge the adoption of a new paradigm for the design and interpretation of intervention trials in infectious diseases, particularly with regard to emerging infectious diseases, one that more accurately reflects the dynamics of the transmission process...
December 29, 2017: BMC Medicine
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