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https://www.readbyqxmd.com/read/28454078/new-complexes-of-cu-ii-with-dipicolinate-and-pyridyl-based-ligands-an-experimental-and-dft-approach
#1
Florencia Luzardo, Natalia Álvarez, Carlos Kremer, Andrea S S de Camargo, Jorge S Gancheff
The three novel mononuclear copper(II) complexes with dipicolinate and pyridyl-based ligands [Cu(dipic)(L)(OH2)] (L=4-picoline, vinylpyridine, 4-styrylpyridine; dipic(2-)=dipicolinate) were afforded and structurally characterized. X-ray diffraction studies accounted for slight distorted square-pyramidal structures in which the dianion dipic(2-) acts as a tridentate ligand in a mer-fashion, the N-donor species occupy an in-plane position, and a water molecule was detected apically coordinated. To assess the effect of the nature of the pyridyl-substituent (para position) on electronic properties, other complexes were also synthesized: [Cu(dipic)(py)(OH2)], [{Cu(dipic)(OH2)}2(μ-pyz)] and [{Cu(dipic)(OH2)}(μ-pypy){Cu(dipic)}] (py=pyridine, pyz=pyrazine, pypy=(E)-1,2-bis(pyridine-4-yl)ethane)...
April 8, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28453964/degradation-of-sulfadimethoxine-catalyzed-by-laccase-with-soybean-meal-extract-as-natural-mediator-mechanism-and-reaction-pathway
#2
Shangtao Liang, Qi Luo, Qingguo Huang
Natural laccase-mediator systems have been well recognized as an eco-friendly and energy-saving approach in environmental remediation, whose further application is however limited by the high cost of natural mediators and relatively long treatment time span. This study evaluated the water extract of soybean meal, a low-cost compound system, in mediating the laccase catalyzed degradation of a model contaminant of emerging concern, sulfadimethoxine (SDM), and demonstrated it as a promising alternative mediator for soil and water remediation...
April 23, 2017: Chemosphere
https://www.readbyqxmd.com/read/28453935/synthesis-of-trialkylhydroxylamines-by-stepwise-reduction-of-o-acyl-n-n-disubstituted-hydroxylamines-substituent-effects-on-the-reduction-of-o-1-acyloxyalkyl-hydroxylamines-and-on-the-conformational-dynamics-of-n-alkoxypiperidines
#3
Sandeep Dhanju, Brendan W Blazejewski, David Crich
The influence of the electron-withdrawing azide group on the reduction of O-(1-acyloxy-ω-azido)hydroxylamines by triethylsilane in the presence of boron trifluoride etherate is studied and found to increase with increasing proximity to the reaction site, suggesting that the reaction proceeds by way of aminoxocarbenium ion intermediates. The ability to carry azides through the reaction sequence affords O-(ω-azidoalkyl-N,N-dialkylhydroxylamines thereby making such functionality available for use in click chemistry...
April 28, 2017: Journal of Organic Chemistry
https://www.readbyqxmd.com/read/28453677/afs-identification-and-quantification-of-species-composition-by-metagenomic-sequencing
#4
Yongchao Liu, Fabian Ripp, Rene Koeppel, Hanno Schmidt, Sören Lukas Hellmann, Mathias Weber, Christopher Felix Krombholz, Bertil Schmidt, Thomas Hankeln
Summary: DNA-based methods to detect and quantify taxon composition in biological materials are often based on species-specific polymerase chain reaction, limited to detecting species targeted by the assay. Next-generation sequencing overcomes this drawback by untargeted shotgun sequencing of whole metagenomes at affordable cost. Here we present AFS, a software pipeline for quantification of species composition in food. AFS uses metagenomic shotgun sequencing and sequence read counting to infer species proportions...
May 1, 2017: Bioinformatics
https://www.readbyqxmd.com/read/28453645/medicare-part-d-payments-for-topical-steroids-rising-costs-and-potential-savings
#5
Hannah Song, Adewole Adamson, Arash Mostaghimi
Importance: Rising pharmaceutical costs in the United States are an increasing source of financial burden for payers and patients. Although topical steroids are among the most commonly prescribed medications in dermatology, there are limited data on steroid-related spending and utilization. Objective: To characterize Medicare and patient out-of-pocket costs for topical steroids, and to model potential savings that could result from substitution of the cheapest topical steroid from the corresponding potency class...
April 28, 2017: JAMA Dermatology
https://www.readbyqxmd.com/read/28453552/specific-blockade-of-rictor-mtor-association-inhibits-mtorc2-activity-and-is-cytotoxic-in-glioblastoma
#6
Angelica Benavides-Serrato, Jihye Lee, Brent Holmes, Kenna A Landon, Tariq Bashir, Michael E Jung, Alan Lichtenstein, Joseph Gera
A small molecule which specifically blocks the interaction of Rictor and mTOR was identified utilizing a high-throughput yeast two-hybrid screen and evaluated as a potential inhibitor of mTORC2 activity in glioblastoma multiforme (GBM). In vitro, CID613034 inhibited mTORC2 kinase activity at submicromolar concentrations and in cellular assays specifically inhibited phosphorylation of mTORC2 substrates, including AKT (Ser-473), NDRG1 (Thr-346) and PKCα (Ser-657), while having no appreciable effects on the phosphorylation status of the mTORC1 substrate S6K (Thr-389) or mTORC1-dependent negative feedback loops...
2017: PloS One
https://www.readbyqxmd.com/read/28449410/the-impact-of-the-affordable-care-act-on-self-employment
#7
Bradley T Heim, Lang Kate Yang
This paper estimates the impact of the implementation of the Affordable Care Act (ACA) in 2014 on the decision to be self-employed. Using data from the Current Population Survey, we employ two identification strategies. Utilizing prereform variation in state nongroup health insurance market regulations, we find that the ACA did not increase self-employment overall in states that lacked similar provisions in their nongroup markets prior to 2014. In specifications that utilize variation across individuals in characteristics that could make it harder for them to purchase insurance if they left their current employer, we also do not find that the ACA differentially increased self-employment...
April 27, 2017: Health Economics
https://www.readbyqxmd.com/read/28449181/metabolite-profile-and-antiproliferative-effects-in-hacat-cells-of-a-salix-reticulata-extract
#8
Elisabetta Corradi, Nadine Schmidt, Nathalie Räber, Maria De Mieri, Matthias Hamburger, Veronika Butterweck, Olivier Potterat
Phenolic constituents of Salix reticulata (Salicaceae) and antiproliferative activity of an extract and individual compounds were investigated in immortalized human non-tumorigenic keratinocytes (HaCaT). A MeOH extract from aerial parts afforded several flavonoids, including luteolin and apigenin glycosides (2-5 and 9) and catechin (1), two procyanidin fractions, and the phenolic glucosides picein (6), triandrin (7), and salicortin (8). In an adenosine triphosphate assay, the MeOH extract reduced cell viability by approximately 60 % at a concentration of 100 µg/mL...
April 27, 2017: Planta Medica
https://www.readbyqxmd.com/read/28448782/amcp-partnership-forum-driving-value-and-outcomes-in-oncology
#9
(no author information available yet)
Innovation in cancer treatment has provided a wealth of recently available therapeutic agents and a healthy drug pipeline that promises to change the way we approach this disease and the lives of those affected in the years to come. However, the majority of these new agents, many of which are targeted to specific genomic features of various tumors, may challenge the health care system's ability to afford cancer care. This innovation drives the need to focus on the value of the treatments provided to patients with cancer and on methods to optimize the efficiency of the dollars we spend, in addition to the clinical value itself...
May 2017: Journal of Managed Care & Specialty Pharmacy
https://www.readbyqxmd.com/read/28448757/prevalence-and-types-of-gender-affirming-surgery-among-a-sample-of-transgender-endocrinology-patients-prior-to-state-expansion-of-insurance-coverage
#10
Maya Kailas, Hsun Ming Simon Lu, Emily F Rothman, Joshua D Safer
OBJECTIVE: Transgender individuals now have many options for medical intervention, including gender affirmation surgeries. However, it is unknown how common it is for transgender individuals to undergo these surgeries. The purpose of this cross-sectional study was to assess the prevalence of gender affirming surgeries among transgender patients in 2015, which was immediately prior to insurance changes that made gender affirming surgery more affordable for Massachusetts residents. DESIGN: A retrospective chart review of 99 transgender patients was performed at the Endocrinology Clinic at Boston Medical Center, an urban safety net hospital...
April 27, 2017: Endocrine Practice
https://www.readbyqxmd.com/read/28448475/formulation-characterization-and-properties-of-hemp-seed-oil-and-its-emulsions
#11
Veronika Mikulcová, Věra Kašpárková, Petr Humpolíček, Leona Buňková
The formulation, characterization, and anticipated antibacterial properties of hemp seed oil and its emulsions were investigated. The oil obtained from the seeds of Cannabis sativa L. in refined and unrefined form was characterized using iodine, saponification, acid values, and gas chromatography, and was employed for the preparation of stable oil-in-water emulsions. The emulsions were prepared using pairs of non-ionic surfactants (Tween, Span). The effects of the emulsification method (spontaneous emulsification vs...
April 27, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28448328/hospice-or-community-network-choices-in-end-of-life-care-in-jamaica
#12
Roger Lee Mendoza
AIM: National and international healthcare agencies and organizations typically attribute slow or haphazard growth in hospice and palliative care in developing countries to various resource constraints. This study provides evidence of the substantial and widening gap between policy advocacy and individual decision-making concerning end-of-life care. It does so by establishing the incentives and risks that underlie choices of patients and providers against the relative scarcity of hospices in these countries...
April 26, 2017: International Journal of Evidence-based Healthcare
https://www.readbyqxmd.com/read/28448119/sulfur-nano-dots-stitched-in-2d-bubble-like-interconnected-carbon-fabric-as-reversibility-enhanced-cathodes-for-lithium-sulfur-batteries
#13
Feng Wu, Yusheng Ye, Jia-Qi Huang, Teng Zhao, Ji Qian, Yuanyuan Zhao, Li Li, Lei Wei, Rui Luo, Yongxin Huang, Yi Xing, Renjie Chen
The behavior of two-dimensional (2D) materials for energy-storage systems relates to their morphology and physicochemical properties. Although various 2D materials can be found in different fields, the open access of these materials has greatly hampered their practical applications, such as in lithium sulfur batteries, where the soluble intermediates should be controlled. Here, we have developed a facile approach to prepare 2D ultra-thin interconnected carbon fabrics (ICFs) with "bubble-like" morphology and abundant mesopores using a "blowing bubble" method...
April 27, 2017: ACS Nano
https://www.readbyqxmd.com/read/28448109/how-medicaid-enrollees-fare-compared-with-privately-insured-and-uninsured-adults-findings-from-the-commonwealth-fund-biennial-health-insurance-survey-2016
#14
Munira Z Gunja, Sara R Collins, David Blumenthal, Michelle M Doty, Sophie Beutel
ISSUE: The number of Americans insured by Medicaid has climbed to more than 70 million, with an estimated 12 million gaining coverage under the Affordable Care Act’s Medicaid expansion. Still, some policymakers have questioned whether Medicaid coverage actually improves access to care, quality of care, or financial protection. GOALS: To compare the experiences of working-age adults who were either: covered all year by private employer or individual insurance; covered by Medicaid for the full year; or uninsured for some time during the year...
April 2017: Issue Brief of the Commonwealth Fund
https://www.readbyqxmd.com/read/28447993/synthesis-of-1-2-azaborines-and-the-preparation-of-their-protein-complexes-with-t4-lysozyme-mutants
#15
Hyelee Lee, Shih-Yuan Liu
We describe a general synthesis of 1,2-azaborines using standard air-free techniques and protein complex preparation with T4 lysozyme mutants by vapor diffusion. Oxygen- and moisture-sensitive compounds are prepared and isolated under an inert atmosphere (N2) using either a vacuum gas manifold or a glove box. As an example of azaborine synthesis, we demonstrate the synthesis and purification of the volatile N-H-B-ethyl-1,2-azaborine by a five-step sequence involving distillation and column chromatography for the isolation of products...
March 25, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28447845/time-course-of-motor-affordances-evoked-by-pictured-objects-and-words
#16
Daniel N Bub, Michael E J Masson, Ragav Kumar
Correspondence effects based on the relationship between the left/right position of a pictured object's handle and the hand used to make a response, or on the size of the object and the nature of a grip response (power/precision), have been attributed to motor affordances evoked by the object. Effects of this nature, however, are readily explained by the similarity in the abstract spatial coding of the features that define the stimulus and response, without recourse to object-based affordances. We propose that in the task context of making reach-and-grasp actions, pictured objects may evoke genuine, limb-specific action constituents...
April 27, 2017: Journal of Experimental Psychology. Human Perception and Performance
https://www.readbyqxmd.com/read/28447838/in-defense-of-commitment-the-curative-power-of-violated-expectations
#17
Sandra L Murray, Veronica M Lamarche, Sarah Gomillion, Mark D Seery, Cheryl Kondrak
A new model of commitment defense in romantic relationships is proposed. It assumes that relationships afford a central resource for affirming meaning and purpose in the world. Consequently, violating expectations about the world outside the relationship can precipitate commitment defense inside the relationship. A meta-analysis of 5 experiments, 2 follow-up correlational studies, and a longitudinal study of the transition to first parenthood supported the model. Experimentally violating conventional expectations about the world (e...
April 27, 2017: Journal of Personality and Social Psychology
https://www.readbyqxmd.com/read/28447796/rhodium-catalyzed-asymmetric-conjugate-alkynylation-of-%C3%AE-%C3%AE-unsaturated-%C3%AE-ketoesters
#18
Yanle Zhi, Jianhang Huang, Na Liu, Tao Lu, Xiaowei Dou
The first example of catalytic asymmetric conjugate alkynylation of β,γ-unsaturated α-ketoesters is reported. By using Rh(I)/(R)-DM-binap complex as the catalyst and diphenyl[(triisopropylsilyl)ethynyl]methanol as the alkynylating reagent, the alkynylation reaction proceeded smoothly to afford α-ketoesters bearing a propargylic chiral center at γ position in good yields with high enantioselectivities.
April 27, 2017: Organic Letters
https://www.readbyqxmd.com/read/28447269/estimating-hiv-medication-adherence-and-persistence-two-instruments-for-clinical-and-research-use
#19
David A Wohl, A T Panter, Christine Kirby, Brooke E Magnus, Michael G Hudgens, Andrew G Allmon, Katie R Mollan
Antiretroviral therapy (ART) requires lifelong daily oral therapy. While patient characteristics associated with suboptimal ART adherence and persistence have been described in cohorts of HIV-infected persons, these factors are poor predictors of individual medication taking behaviors. We aimed to create and test instruments for the estimation of future ART adherence and persistence for clinical and research applications. Following formative work, a battery of 148 items broadly related to HIV infection and treatment was developed and administered to 181 HIV-infected patients...
April 26, 2017: AIDS and Behavior
https://www.readbyqxmd.com/read/28447230/what-drives-insurer-participation-and-premiums-in-the-federally-facilitated-marketplace
#20
Jean Marie Abraham, Coleman Drake, Jeffrey S McCullough, Kosali Simon
We investigate determinants of market entry and premiums within the context of the Affordable Care Act's Marketplaces for individual insurance. Using Bresnahan and Reiss (1991) as the conceptual framework, we study how competition and firm heterogeneity relate to premiums in 36 states using Federally Facilitated or Supported Marketplaces in 2016. Our primary data source is the Qualified Health Plan Landscape File, augmented with market characteristics from the American Community Survey and Area Health Resource File as well as insurer-level information from federal Medical Loss Ratio annual reports...
April 26, 2017: International Journal of Health Economics and Management
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