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https://www.readbyqxmd.com/read/28108206/circadian-variation-in-post-void-residual-in-nursing-home-residents-with-moderate-impairment-in-activities-of-daily-living
#1
Veerle Decalf, Anja Huion, Marie-Astrid Denys, Candy Kumps, Mirko Petrovic, Karel Everaert
BACKGROUND: Despite the conflicting evidence about postvoid residual (PVR) and its variation in time and corresponding voided volume (VV), studies with urinary diaries and systematic measurements of PVR after each void have never been conducted in nursing home (NH) residents. OBJECTIVE: To describe the circadian rhythm of PVR and residual fraction (RF, the net quantity of PVR) and to identify the time window with the highest PVR and RF. DESIGN, SETTING, AND PARTICIPANTS: A multicentre prospective study conducted between 2014 and 2015 in 5 Belgian NHs...
January 17, 2017: Journal of the American Medical Directors Association
https://www.readbyqxmd.com/read/28106332/copper-ii-controlled-molecular-glue-for-mismatched-dna
#2
Naoko Kotera, Régis Guillot, Marie-Paule Teulade-Fichou, Anton Granzhan
Isothermal hybridization of two DNA strands bearing three thymine-thymine (T-T) mismatches can be brought about in the presence of a stoichiometric amount of a bis-naphthalene macrocycle, 2,7-BisNP-NH. This process can be reverted by addition of a Cu(II) salt due to formation of a dinuclear metal complex which does not bind to DNA. Subsequent sequestration of Cu(II) releases the macrocycle and restores the hybridization state of DNA strands, thus allowing implementation of a fast fluorescent two-state DNA switch...
January 20, 2017: Chembiochem: a European Journal of Chemical Biology
https://www.readbyqxmd.com/read/28106189/microsolvation-of-the-pyrrole-cation-py-with-nonpolar-and-polar-ligands-infrared-spectra-of-py-ln-with-l-ar-n2-and-h2o-n-%C3%A2-3
#3
Markus Schütz, Yoshiteru Matsumoto, Aude Bouchet, Murat Öztürk, Otto Dopfer
The solvation of aromatic (bio-)molecular building blocks has a strong impact on the intermolecular interactions and function of supramolecular assemblies, proteins, and DNA. Herein we characterize the initial microsolvation process of the heterocyclic aromatic pyrrole cation (Py(+)) in its (2)A2 ground electronic state with nonpolar, quadrupolar, and dipolar ligands (L = Ar, N2, and H2O) by infrared photodissociation (IRPD) spectroscopy of cold mass-selected Py(+)-Ln (n ≤ 3) clusters in a molecular beam and dispersion-corrected density functional theory calculations at the B3LYP-D3/aug-cc-pVTZ level...
January 20, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28106007/atomic-layer-deposition-of-1d-and-2d-nickel-nanostructures-on-graphite
#4
Seung Ryu, Jaehong Yoon, Hyoung-Seok Moon, Bonggeun Shong, Hyungjun Kim, Han-Bo-Ram Lee
One-dimensional (1D) nanowires (NWs) and two-dimensional (2D) thin films of Ni were deposited on highly ordered pyrolytic graphite (HOPG) by atomic layer deposition (ALD), using NH<sub>3</sub> as a counter reactant. Thermal ALD using NH<sub>3</sub> gas forms 1D NWs along step edges, while NH<sub>3</sub> plasma enables the deposition of a continuous 2D film over the whole surface. The lateral and vertical growth rates of the Ni NWs are numerically modeled as a function of the number of ALD cycles...
January 20, 2017: Nanotechnology
https://www.readbyqxmd.com/read/28105737/the-effects-of-power-toothbrushing-on-periodontal-inflammation-in-a-canadian-nursing-home-population-a-randomized-controlled-trial
#5
S E Lavigne, M B Doupe, A M Iacopino, S Mahmud, L Elliott
OBJECTIVES: The aim of this study was to investigate whether twice-daily use of a rotating-oscillating power toothbrush (Oral-B Professional Care 1000(™) ) in nursing home (NH) residents over a 6-week period, compared to usual care (UC), would reduce periodontal inflammation. METHODS: In this repeated measures single-blinded randomized controlled trial, 59 residents of one NH in Winnipeg, Canada, were randomized to receive either twice-daily tooth brushing with a rotating-oscillating power toothbrush (PB) or UC by caregivers...
January 19, 2017: International Journal of Dental Hygiene
https://www.readbyqxmd.com/read/28103693/the-logic-behind-a-physical-organic-chemist-s-research-topics
#6
Charles L Perrin
Although my research has no common theme or defining area, a coherence connects the diverse topics insofar as one project leads logically to another. Thus, studies on mechanisms of hydrogen exchange in amides and amidines led to the influence of hydrogen bonding and to NMR methods for chemical kinetics, including 2D-EXSY spectroscopy. Another connection was the OH(-)-catalyzed NH exchange in amines that had supported the hypothesis of stereoelectronic control. We therefore analyzed that hypothesis critically, tested it, found counterexamples, and proposed an alternative hypothesis...
January 20, 2017: Journal of Organic Chemistry
https://www.readbyqxmd.com/read/28098464/clustering-of-uracil-molecules-on-ice-nanoparticles
#7
Andriy Pysanenko, Jaroslav Kocisek, Dana Nachtigallova, Viktoriya Poterya, Michal Farnik
We generate a molecular beam of ice nanoparticles (H2O)N, N ∼130 - 220, which pick up several individual gas phase uracil (U) or 5-bromouracil (BrU) molecules. The mass spectra of the doped nanoparticles prove that the uracil and bromouracil molecules coagulate to clusters on the ice nanoparticles. Calculations of U and BrU monomers and dimers on the ice nanoparticles provide theoretical support for the cluster formation. The (U)nH(+) and (BrU)nH(+) intensity dependencies on m extracted from the mass spectra suggest a smaller tendency of BrU to coagulate compared to U, which is substantiated by a lower mobility of bromouracil on the ice surface...
January 18, 2017: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/28097801/odd-even-alternation-in-tautomeric-porous-organic-cages-with-exceptional-chemical-stability
#8
Saibal Bera, Arghya Basu, Srinu Tothadi, Bikash Garai, Subhrashis Banerjee, Kumar Vanka, Rahul Banerjee
Amine-linked (C-NH) porous organic cages (POCs) are preferred over the imine-linked (C=N) POCs owing to their enhanced chemical stability. In general, amine-linked cages, obtained by the reduction of corresponding imines, are not shape-persistent in the crystalline form. Moreover, they require multistep synthesis. Herein, a one-pot synthesis of four new amine-linked organic cages by the reaction of 1,3,5-triformylphloroglucinol (Tp) with different analogues of alkanediamine is reported. The POCs resulting from the odd diamine (having an odd number of -CH2 groups) is conformationally eclipsed, while the POCs constructed from even diamines adopt a gauche conformation...
January 18, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28092038/nmr-chemical-shift-mapping-of-sh2-peptide-interactions
#9
Marissa A McKercher, Deborah S Wuttke
Heteronuclear single quantum coherence (HSQC) nuclear magnetic resonance (NMR) experiments offer a rapid and high resolution approach to gaining binding and conformational insights into a protein-peptide interaction. By tracking (1)H and (15)N chemical shift changes over the course of a peptide titration into isotopically labeled protein, amide NH pairs of amino acids whose chemical environment changes upon peptide binding can be identified. When mapped onto a structure of the protein, this approach can identify the peptide-binding interface or regions undergoing conformation changes within a protein upon ligand binding...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28091687/analyzing-change-in-nursing-home-information-technology-sophistication-a-2-year-survey
#10
Gregory L Alexander, Richard Madsen, Matthew Newton
Nursing home (NH) health information technology (IT) is becoming more prevalent across the country. Currently, a national sample of NHs is being surveyed for 3 consecutive years to determine trends in NH IT sophistication (e.g., measures of IT capabilities, extent of IT use, IT integration with internal and external stakeholders). IT sophistication is measured in resident care, clinical support, and administrative activities. The current article provides details of the differences in NH IT sophistication reported by administrators completing Year 1 and Year 2 surveys...
January 1, 2017: Journal of Gerontological Nursing
https://www.readbyqxmd.com/read/28091686/a-retrospective-chart-review-of-two-different-insulin-administration-systems-on-glycemic-control-in-older-adults-in-long-term-care
#11
Alan Boonin, Brenda Balinski, Jerry Sauter, Joe Martinez, Scott Abbott
The current retrospective chart review compared glycemic control and cost impact of two insulin administration systems, V-Go(®) versus usual care with standard of care (SOC) insulin injections, in eight patients residing in a nursing home (NH). A total of 1,937 blood glucose (BG) values were collected over 61 days. Significant improvements were observed for the V-Go versus SOC group in time in range 100 mg/dL to 200 mg/dL (V-Go 59.09% vs. SOC 34.02%; p < 0.001), reduced BG fluctuations as measured by standard deviation (V-Go 61...
January 1, 2017: Journal of Gerontological Nursing
https://www.readbyqxmd.com/read/28088445/synthesis-and-exploration-of-novel-radiolabeled-bombesin-peptides-for-targeting-receptor-positive-tumor
#12
Kakali De, Indranil Banerjee, Samarendu Sinha, Shantanu Ganguly
Increasing evidence of peptide receptor overexpression in various cancer cells, warrant the development of receptor specific radiolabeled peptides for molecular imaging and therapy in nuclear medicine. Gastrin-releasing-peptide (GRP) receptor, are overexpressed in a variety of human cancer cells. The present study report the synthesis and biological evaluation of new bombesin (BBN) analogs, HYNIC-Asp-[Phe(13)]BBN(7-13)-NH-CH2-CH2-CH3:BA1, HYNIC-Pro-[Tyr(13)Met(14)]BBN(7-14)NH2:BA2 as prospective tumor imaging agent with compare to BBN(7-14)NH2:BS as standard...
January 11, 2017: Peptides
https://www.readbyqxmd.com/read/28088162/molecular-collisions-and-reactive-scattering-in-external-fields-are-field-induced-couplings-important-at-short-range
#13
D Vieira, R V Krems, T V Tscherbul
We use accurate quantum scattering calculations to elucidate the role of short-range molecule-field interactions in atom-molecule inelastic collisions and abstraction chemical reactions at low temperatures. We consider two examples: elastic and inelastic scattering of NH(Σ3) molecules with Mg(S1) atoms in a magnetic field; reactive scattering LiF + H → Li + HF in an electric field. Our calculations suggest that, for non-reactive collision systems and abstraction chemical reactions, the molecule-field interactions cannot generally be neglected at short range because the atom-molecule potential passes through zero at short range...
January 14, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28088046/application-of-acid-modified-polyurethane-foam-surface-for-detection-and-removing-of-organochlorine-pesticides-from-wastewater
#14
E A Moawed, A M Radwan
The commercial polyurethane foam was acid modified to get an inexpensive adsorbent (AM-PUF) has highly surface polarity and sorption capacity. The elemental analysis, scanning electron microscopy, thermal analysis, ultraviolet/visible/infrared spectroscopies and X-ray diffraction were used for characterization of AM-PUF. The surface of AM-PUF has amorphous character (broadband at 2θ, 21.75°) and contains several active sites e.g. NH, OH, CO, CC and COC groups. The electrical conductivity (σ), iodine value and methylene blue index of AM-PUF are 1...
January 7, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/28080261/performance-of-hispanics-and-non-hispanic-whites-on-the-nih-toolbox-cognition-battery-the-roles-of-ethnicity-and-language-backgrounds
#15
Ilse Flores, Kaitlin B Casaletto, Maria J Marquine, Anya Umlauf, David J Moore, Dan Mungas, Richard C Gershon, Jennifer L Beaumont, Robert K Heaton
OBJECTIVE: This study examined the influence of Hispanic ethnicity and language/cultural background on performance on the NIH Toolbox Cognition Battery (NIHTB-CB). METHOD: Participants included healthy, primarily English-speaking Hispanic (n = 93; Hispanic-English), primarily Spanish-speaking Hispanic (n = 93; Hispanic-Spanish), and English speaking Non-Hispanic white (n = 93; NH white) adults matched on age, sex, and education levels. All participants were in the NIH Toolbox national norming project and completed the Fluid and Crystallized components of the NIHTB-CB...
January 12, 2017: Clinical Neuropsychologist
https://www.readbyqxmd.com/read/28079923/vibrational-circular-dichroism-of-a-2-5-diketopiperazine-dkp-peptide-evidence-for-dimer-formation-in-cyclo-ll-or-ld-diphenylalanine-in-the-solid-state
#16
Ariel Pérez-Mellor, Anne Zehnacker
The diastereomer diketopiperazine (DKP) peptides built on phenylalanine, namely, cyclo diphenylalanine LPhe-LPhe and LPhe-DPhe, were studied in the solid phase by vibrational circular dichroism (VCD) coupled to quantum chemical calculations. The unit structure of cyclo LPhe-LPhe in KBr pellets is a dimer bridged by two strong NH…O hydrogen bonds. The intense bisignate signature in the CO stretch region is interpreted in terms of two contributions arising from the free COs of the dimer and the antisymmetrical combination of the bound COs...
January 12, 2017: Chirality
https://www.readbyqxmd.com/read/28078677/stable-and-rapid-thiol-bioconjugation-by-light-triggered-thiomaleimide-ring-hydrolysis
#17
Dimpy Kalia, Sharad P Pawar, Jyoti S Thopate
Maleimide-mediated thiol-specific derivatization of biomolecules is one of the most efficacious bioconjugation approaches currently available. Alarmingly, however, recent work demonstrates that the resulting thiomaleimide conjugates are susceptible to breakdown via thiol exchange reactions. Herein, we report a new class of maleimides, namely o-CH2 NH(i) Pr phenyl maleimides, that undergo unprecedentedly rapid ring hydrolysis after thiol conjugation to form stable thiol exchange-resistant conjugates. Furthermore, we overcome the problem of low shelf lives of maleimide reagents owing to their propensity to undergo ring hydrolysis prior to bioconjugation by developing a photocaged version of this scaffold that resists ring hydrolysis...
January 12, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28074000/how-does-rurality-influence-the-staffing-of-social-service-departments-in-nursing-homes
#18
Amy Restorick Roberts, John R Bowblis
PURPOSE OF THE STUDY: Social service departments in nursing homes (NHs) are staffed by qualified social workers (QSWs) and paraprofessionals. Due to greater workforce challenges in rural areas, this article aims to describe the staffing levels and composition of these departments by rurality. DESIGN AND METHODS: Certification and Survey Provider Enhanced Reports data from 2009 to 2015 are used to examine the effect of rurality on social service staffing using random-effects linear panel regressions...
January 9, 2017: Gerontologist
https://www.readbyqxmd.com/read/28072496/structural-reconstruction-of-the-perivascular-space-in-the-adult-mouse-neurohypophysis-during-an-osmotic-stimulation
#19
K Nishikawa, E Furube, S Morita, N Horii-Hayashi, M Nishi, S Miyata
Oxytocin (OXT) and arginine vasopressin (AVP), neuropeptides in the neurohypophysis (NH), control lactation and body fluid homeostasis, respectively. Hypothalamic neurosecretory neurons project their axons from the supraoptic and paraventricular nuclei to the NH to make contact with the vascular surface and release OXT and AVP. The neurohypophysial vascular structure is unique, because it has a wide perivascular space between the inner and outer basement membranes. However, the significance of this unique vascular structure remains unclear; therefore, we aimed to elucidate the functional significance of the perivascular space and its activity-dependent changes during salt loading in adult mice...
January 10, 2017: Journal of Neuroendocrinology
https://www.readbyqxmd.com/read/28071914/synthesis-and-nmr-analysis-of-a-conformationally-controlled-%C3%AE-turn-mimetic-torsion-balance
#20
Alyssa B Lypson, Craig S Wilcox
The molecular torsion balance concept was applied to a new conformationally controlled scaffold and synthesized to accurately evaluate pairwise amino acid interactions in an antiparallel β-sheet motif. The scaffold's core design combines (ortho-tolyl)amide and o,o,o'-trisubstituted biphenyl structural units to provide a geometry better-suited for intramolecular hydrogen bonding. Like the dibenzodiazocine hinge of the traditional torsion balance, the (ortho-tolyl)amide unit offers restricted rotation around an N-aryl bond...
January 10, 2017: Journal of Organic Chemistry
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