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https://www.readbyqxmd.com/read/28346936/differential-establishment-of-bifidobacteria-in-the-breastfed-infant-gut
#1
Zachery T Lewis, David A Mills
The composition of an infant's gut microbiome can impact their immediate and long-term health. Bifdobacteria play a major role in structuring the gut microbiome of breastfed infants due to their ability to consume oligosaccharides found in human milk. However, recent studies have revealed that bifidobacteria are often absent in the gut microbiome of breastfed infants in some locations. This lack of colonization may be due either to differences in the environmental conditions in the gastrointestinal tract of uncolonized infants which prohibit the growth of bifidobacteria or a dearth of sources from which infants may acquire these specialized bacterial species...
2017: Nestlé Nutrition Institute Workshop Series
https://www.readbyqxmd.com/read/28346931/compositional-analysis-and-metabolism-of-human-milk-oligosaccharides-in-infants
#2
Clemens Kunz, Silvia Rudloff
It is a great success that biotechnological means are available today to produce amounts of single human milk oligosaccharides (HMOs) in a purity which allows performing metabolic and functional studies even in humans. As recent data indicate that there is a link between the Lewis blood group and the secretor status of an individual and certain inflammatory diseases, this review will also focus on the metabolic fate of secretor- and Lewis blood group-specific components. We conclude that there is no simple urinary or fecal excretion pattern of HMOs, although the pattern in urine often reflects the mother's secretor/nonsecretor status...
2017: Nestlé Nutrition Institute Workshop Series
https://www.readbyqxmd.com/read/28346740/are-various-sigma-hole-bonds-steered-by-the-same-mechanisms
#3
Slawomir Janusz Grabowski, W Andrzej Sokalski
Representative Lewis acid - Lewis base complexes linked by tetrel, pnicogen, chalcogen and halogen bonds have been studied within the Quantum Theory of Atoms in Molecules (QTAIM) approach and the Hybrid Variation-Perturbation Theory (HVPT) in order to analyse possible relationships between these sigma-hole dimers. Results obtained at the MP2/aug-cc-pVTZ level indicate numerous correlations similar to hydrogen bonded systems.
March 27, 2017: Chemphyschem: a European Journal of Chemical Physics and Physical Chemistry
https://www.readbyqxmd.com/read/28346412/vista-is-an-inhibitory-immune-checkpoint-that-is-increased-after-ipilimumab-therapy-in-patients-with-prostate-cancer
#4
Jianjun Gao, John F Ward, Curtis A Pettaway, Lewis Z Shi, Sumit K Subudhi, Luis M Vence, Hao Zhao, Jianfeng Chen, Hong Chen, Eleni Efstathiou, Patricia Troncoso, James P Allison, Christopher J Logothetis, Ignacio I Wistuba, Manuel A Sepulveda, Jingjing Sun, Jennifer Wargo, Jorge Blando, Padmanee Sharma
To date, anti-CTLA-4 (ipilimumab) or anti-PD-1 (nivolumab) monotherapy has not been demonstrated to be of substantial clinical benefit in patients with prostate cancer. To identify additional immune-inhibitory pathways in the prostate-tumor microenvironment, we evaluated untreated and ipilimumab-treated tumors from patients in a presurgical clinical trial. Levels of the PD-L1 and VISTA inhibitory molecules increased on independent subsets of macrophages in treated tumors. Our data suggest that VISTA represents another compensatory inhibitory pathway in prostate tumors after ipilimumab therapy...
March 27, 2017: Nature Medicine
https://www.readbyqxmd.com/read/28346002/quality-assessment-of-fluconazole-capsules-and-oral-suspensions-compounded-by-pharmacies-located-in-the-united-states
#5
Carine M Laporte, Crisanta Cruz-Espindola, Kamoltip Thungrat, Anthea E Schick, Thomas P Lewis, Dawn M Boothe
OBJECTIVE To evaluate pharmaceutical characteristics (strength or concentration, accuracy, and precision), physical properties, and bacterial contamination of fluconazole compounded products. SAMPLE Fluconazole compounded products (30- and 240-mg capsules; 30- and 100-mg/mL oral suspensions) from 4 US veterinary compounding pharmacies. PROCEDURES Fluconazole compounded products were ordered 3 times from each of 4 pharmacies at 7- or 10-day intervals. Generic fluconazole products (50- and 200-mg tablets; 10- and 40-mg/mL oral suspensions) served as references...
April 2017: American Journal of Veterinary Research
https://www.readbyqxmd.com/read/28345914/photoreductive-elimination-of-chlorine-from-antimony-in-an-sbpd-vii-complex
#6
Sumit Sahu, Francois P Gabbaï
As part of our ongoing interest in main group species that support the photoreductive elimination of halogens, we have synthesized [Cl3SbVPdIICl2(o-dppp)2] (2, o-dppp = o-(Ph2P)C6H4), a palladium dichloride complex featuring a Lewis acidic trichlorostiborane moiety positioned within the ligand architecture. Upon UV irradiation, this complex undergoes a clean photoreductive chlorine elimination reaction which produces [Cl2SbIVPdICl(o-dppp)2] (1), a complex with a covalent Sb-Pd bond. This transformation illustrates the viability of antimony as an element from which a halogen can be photoeliminated; it also shows that a metal halide can be photolytically coupled with a main group halide to generate a metal-element bond...
March 27, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28345908/rapid-low-temperature-formation-of-imine-linked-cofs-catalyzed-by-metal-triflates
#7
Michio Matsumoto, Raghunath R Dasari, Woojung Ji, Cameron H Feriante, Timothy C Parker, Seth R Marder, William R Dichtel
Imine-linked two-dimensional covalent organic frameworks (2D COFs) are crystalline polymer networks with enhanced stability and broader monomer scope compared to boronate ester-linked systems. They are traditionally prepared by condensing polyfunctional aldehydes and amines at elevated temperature in a mixture of organic solvents and aqueous CH3CO2H, which catalyzes imine formation and exchange. Under these conditions, an amorphous imine-linked polymer network precipitates quickly and then crystallizes after extended reaction times (hours to days)...
March 27, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28345882/covalent-allosteric-inactivation-of-ptp1b-by-an-inhibitor-electrophile-conjugate
#8
Puminan Punthasee, Adrian R Laciak, Andrea Hicks Cummings, Kasi Viswanatharaju Ruddraraju, Sarah M Lewis, Roman Hillebrand, Harkewal Singh, John J Tanner, Kent S Gates
Protein tyrosine phosphatase 1B (PTP1B) is a validated drug target but it has proven difficult to develop medicinally-useful, reversible inhibitors of this enzyme. Here we explored covalent strategies for the inactivation of PTP1B using a conjugate composed of an active site-directed 5-aryl-1,2,5-thiadiazolidin-3-one 1,1-dioxide inhibitor connected via a short linker to an electrophilic α-bromoacetamide moiety. The inhibitor-electrophile conjugate 5a caused time-dependent loss of PTP1B activity consistent with a covalent inactivation mechanism...
March 27, 2017: Biochemistry
https://www.readbyqxmd.com/read/28345881/silane-and-germane-molecular-electronics
#9
Timothy A Su, Haixing Li, Rebekka S Klausen, Nathaniel T Kim, Madhav Neupane, James L Leighton, Michael L Steigerwald, Latha Venkataraman, Colin Nuckolls
This Account provides an overview of our recent efforts to uncover the fundamental charge transport properties of Si-Si and Ge-Ge single bonds and introduce useful functions into group 14 molecular wires. We utilize the tools of chemical synthesis and a scanning tunneling microscopy-based break-junction technique to study the mechanism of charge transport in these molecular systems. We evaluated the fundamental ability of silicon, germanium, and carbon molecular wires to transport charge by comparing conductances within families of well-defined structures, the members of which differ only in the number of Si (or Ge or C) atoms in the wire...
March 27, 2017: Accounts of Chemical Research
https://www.readbyqxmd.com/read/28345839/validation-of-an-indonesian-version-of-the-breast-cancer-awareness-scale-bcas-i
#10
Solikhah Solikhah, Supannee Promthet, Nitchamon Rakkapao, Cameron P Hurst
Background: Raising breast cancer awareness is a key strategy to reduce associated mortality. While a paucity of adequately validated instruments for breast cancer awareness is applicable across cultures, even outside the health care setting such instruments have been developed. Objective: This study investigated the validity and psychometric properties of a breast cancer awareness scale in Indonesia (BCAS-I). Methods: This cross-sectional study was carried out among Indonesian women conveniently selected within three provinces (Yogyakarta, South of Sumatera and East Nusa Tenggara) located in rural-urban areas using stratified random sampling...
February 1, 2017: Asian Pacific Journal of Cancer Prevention: APJCP
https://www.readbyqxmd.com/read/28345780/lewis-acid-mediated-nazarov-cyclization-as-a-convergent-and-enantioselective-entry-to-c-nor-d-homo-steroids
#11
Johannes Krieger, Toni Smeilus, Oliver Schackow, Athanassios Giannis
A straightforward synthesis of C-nor-D-homo steroids starting from (+)-Wieland-Miescher ketone is reported. This convergent synthetic strategy utilizes a scalable diastereoselective Nazarov cyclization of functionalized chiral aryl vinyl ketones, allowing for further functionalization. The ability to conduct this key transformation on a multi-gram scale paves the way for the synthesis of a variety of completely new C-nor-D-homo steroids, without the need of a classic steran steroid rearrangement or achiral linear reaction sequences...
March 27, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28345392/informed-consent-for-opt-in-hiv-testing-via-tablet-kiosk-an-assessment-of-patient-comprehension-and-acceptability
#12
Mitra K Lewis, Yu-Hsiang Hsieh, Charlotte A Gaydos, Stephen C Peterson, Richard E Rothman
Although implementation of HIV testing in the emergency department has met with some success, one commonly cited challenge is the consent process. Kiosks offer one potential strategy to overcome this barrier. This pilot cross-sectional survey study examined patient comprehension of opt-in HIV testing consent and acceptability of using a kiosk to provide consent. Subjects were guided through a simulated consent process using a kiosk and then completed a survey of consent comprehension and acceptability of kiosk use...
January 1, 2017: International Journal of STD & AIDS
https://www.readbyqxmd.com/read/28345249/a-multinational-drug-utilisation-study-to-investigate-the-use-of-dexmedetomidine-dexdor%C3%A2-in-clinical-practice-in-the-eu
#13
M Weatherall, R Aantaa, G Conti, C J Garratt, P Pohjanjousi, M A Lewis, N Moore, S Perez-Gutthann
AIMS: Dexmedetomidine (dexdor®) is approved in the EU for sedation of adults in the ICU. This observational, retrospective study was requested by the European Medicines Agency to investigate dexmedetomidine use in clinical practice, with particular focus on off-label use including the paediatric population. METHODS: Study countries and sites were chosen from those with highest dexmedetomidine use, based on sales. Site selection (blind) was conducted by a multi-specialist, independent group...
March 27, 2017: British Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/28345205/para-selective-c-h-borylation-of-hetero-arenes-by-cooperative-iridium-aluminum-catalysis
#14
Lichen Yang, Kazuhiko Semba, Yoshiaki Nakao
para-Selective C-H borylation of benzamides and pyridines has been achieved by cooperative iridium/aluminum catalysis. A combination of iridium catalysts commonly employed for arene C-H borylation and bulky aluminum-based Lewis acid catalysts provides an unprecedented strategy for controlling the regioselectivity of C-H borylation to give variously substituted (hetero)arylboronates, which are versatile synthetic intermediates for complex multi-substituted aromatic compounds.
March 27, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28344570/tanycytes-as-regulators-of-seasonal-cycles-in-neuroendocrine-function
#15
REVIEW
Jo E Lewis, Francis J P Ebling
Annual cycles of physiology and behavior are highly prevalent in organisms inhabiting temperate and polar regions. Examples in mammals include changes in appetite and body fat composition, hibernation and torpor, growth of antlers, pelage and horns, and seasonal reproduction. The timing of these seasonal cycles reflects an interaction of changing environmental signals, such as daylength, and intrinsic rhythmic processes: circannual clocks. As neuroendocrine signals underlie these rhythmic processes, the focus of most mechanistic studies has been on neuronal systems in the hypothalamus...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28344163/characterization-of-antibody-response-in-neuroinvasive-infection-caused-by-toscana-virus
#16
Anna Pierro, Sabrina Ficarelli, Nazli Ayhan, Silvia Morini, Luigi Raumer, Michele Bartoletti, Antonio Mastroianni, Francesca Prati, Simona Schivazappa, Patrizia Cenni, Caterina Vocale, Giada Rossini, Paolo Gaibani, Vittorio Sambri, Maria Paola Landini, Russel Edward Lewis, Remi N Charrel, Stefania Varani
OBJECTIVES: Among sandfly-borne pathogens, Toscana virus (TOSV) is a prominent cause of summer meningitis in Mediterranean Europe. Here, we assessed the kinetics of anti-TOSV antibodies over time in 41 patients diagnosed with TOSV-meningitis or meningoencephalitis in North-eastern Italy. METHODS: Acute and follow-up serum samples were collected up to 20 months after diagnosis of TOSV infection and tested for the presence of specific antibody using immunoenzymatic and indirect immunofluorescence assays...
March 23, 2017: Clinical Microbiology and Infection
https://www.readbyqxmd.com/read/28343975/trastuzumab-emtansine-versus-taxane-use-for-previously-treated-her2-positive-locally-advanced-or-metastatic-gastric-or-gastro-oesophageal-junction-adenocarcinoma-gatsby-an-international-randomised-open-label-adaptive-phase-2-3-study
#17
Peter C Thuss-Patience, Manish A Shah, Atsushi Ohtsu, Eric Van Cutsem, Jaffer A Ajani, Hugo Castro, Wasat Mansoor, Hyun Cheol Chung, Gyorgy Bodoky, Kohei Shitara, Gail D Lewis Phillips, Tina van der Horst, Marie-Laurence Harle-Yge, Betsy L Althaus, Yoon-Koo Kang
BACKGROUND: Although trastuzumab plus chemotherapy is the standard of care for first-line treatment of HER2-positive advanced gastric cancer, there is no established therapy in the second-line setting. In GATSBY, we examined the efficacy and tolerability of trastuzumab emtansine in patients previously treated for HER2-positive advanced gastric cancer (unresectable, locally advanced, or metastatic gastric cancer, including adenocarcinoma of the gastro-oesophageal junction). METHODS: This is the final analysis from GATSBY, a randomised, open-label, adaptive, phase 2/3 study, done at 107 centres (28 countries worldwide)...
March 23, 2017: Lancet Oncology
https://www.readbyqxmd.com/read/28343645/protecting-children-from-perioperative-infection-understanding-the-risks
#18
Terri Voepel-Lewis
No abstract text is available yet for this article.
April 2017: Journal of Perianesthesia Nursing: Official Journal of the American Society of PeriAnesthesia Nurses
https://www.readbyqxmd.com/read/28343297/association-of-the-cx3cr1-v249i-variant-with-neurofibrillary-pathology-progression-in-late-onset-alzheimer-s-disease
#19
Alan López-López, Ellen Gelpi, Diana Maria Lopategui, Jose M Vidal-Taboada
Neuroinflammation and microglial dysfunction have a prominent role in the pathogenesis of late-onset Alzheimer's disease (LOAD). CX3CR1 is a microglia-specific gene involved in microglia-neuron crosstalk and neuroinflammation. Numerous evidence show the involvement of CX3CR1 in AD. The aim of this study was to investigate if some functional genetic variants of this gene could influence on LOAD's outcome, in a neuropathologically confirmed Spanish cohort. We designed an open, pragmatic, case-control retrospective study including a total of 475 subjects (205 pathologically confirmed AD cases and 270 controls)...
March 25, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28343292/psychometric-validation-of-the-heart-failure-caregiver-questionnaire-hf-cq-%C3%A2
#20
Anna Strömberg, Nicola Bonner, Laura Grant, Bryan Bennett, Misook L Chung, Tiny Jaarsma, Marie Louise Luttik, Eldrin F Lewis, Frederico Calado, Celine Deschaseaux
BACKGROUND: The Heart Failure Caregiver Questionnaire (HF-CQ(®)) was developed to assess subjective outcomes of heart failure caregivers. The HF-CQ(®) comprises 21 questions on three domains, namely physical, emotional/psychological and lifestyle. The objective of this study was to evaluate the psychometric properties of the HF-CQ(®). METHODS: Patients (n = 150) with heart failure and their primary caregivers (n = 150) were recruited from 11 sites in USA...
March 25, 2017: Patient
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