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https://www.readbyqxmd.com/read/27933749/black-magic-in-gray-titania-noble-metal-free-photocatalytic-h2-evolution-from-hydrogenated-anatase
#1
Ning Liu, Xuemei Zhou, Nhat Truong Nguyen, Kristina Peters, Florian Zoller, Imgon Hwang, Christopher Schneider, Matthias E Miehlich, Detlef Freitag, Karsten Meyer, Dina Fattakhova-Rohlfing, Patrik Schmuki
'Black' TiO2 -in the widest sense, TiO2 reduced by various treatments-has attracted tremendous scientific interest in recent years because of some outstanding properties; most remarkably in photocatalysis. While the material effects visible light absorption (the blacker, the better), black titania produced by high pressure hydrogenation was recently reported to show another highly interesting feature; noble-metal-free photocatalytic H2 generation. In a systematic investigation of high-temperature hydrogen treatments of anatase nanoparticles, TEM, XRD, EPR, XPS, and photoelectrochemistry are used to characterize different degrees of surface hydrogenation, surface termination, electrical conductivity, and structural defects in the differently treated materials...
December 9, 2016: ChemSusChem
https://www.readbyqxmd.com/read/27933748/exploring-glucocorticoid-receptor-agonists-mechanism-of-action-through-mass-cytometry-and-radial-visualizations
#2
Yann Abraham, Bertran Gerrits, Marie-Gabrielle Ludwig, Michael Rebhan, Caroline Gubser Keller
Recent advances in combining flow cytometry and mass spectrometry have led to the development of mass cytometry, allowing for the interrogation of complex cell populations on an unprecedented scale. The volumes and high dimensionality of mass cytometry data pose significant challenges in terms of analysis and visualization. We implement a method called Radviz (1-3), where multidimensional single cell data can be visualized as a projection that maintains the original dimensions and data complexity whilst facilitating analysis and visualization...
December 9, 2016: Cytometry. Part B, Clinical Cytometry
https://www.readbyqxmd.com/read/27933737/testing-the-influence-of-surfactant-based-wound-dressings-on-proteinase-activity
#3
Sunyoung Jeong, Gregory S Schultz, Daniel J Gibson
Proteinases are enzymes that can digest other proteins. In chronic wounds, a sub-class of these enzymes with the ability to degrade the extracellular matrix (matrix metalloproteinases, MMPs) have been found to both inhibit healing and to be able to aid in enzymatically debriding a wound. Enzymatic debridement using the enzymes present in a wound is generally called autolytic debridement. Clinicians seeking to employ autolytic debridement typically use occlusive materials such as medical honey, alginate dressings and other occlusive dressings...
December 8, 2016: International Wound Journal
https://www.readbyqxmd.com/read/27933734/improved-quality-of-life-in-asthma-patients-under-long-term-therapy-assessed-by-ahq-japan
#4
Yuji Tohda, Takashi Iwanaga, Hiroyuki Sano, Hiroaki Kume, Kazuto Hirata, Noriyuki Ohkura, Isao Tachibana, Yoshihiro Nishimura, Hisako Matsumoto, Yoshiaki Minakata, Masanori Yoshikawa, Masaki Fujimura
BACKGROUND AND OBJECTIVES: Assessment of the effects of long-term management on patient quality of life (QOL) would be extremely useful for determining asthma treatment strategies. However, no studies have evaluated QOL over an extended period of time. This study evaluated the changes in QOL, drug management and disease severity in the same asthma patients at an interval of approximately 9 years. METHODS: We re-surveyed asthma patients enrolled in a survey conducted in 2004 to evaluate the effects of approximately a decade of treatment on disease severity and QOL assessed by the Japanese Asthma Health Questionnaire (AHQ-JAPAN)...
December 9, 2016: International Journal of Clinical Practice
https://www.readbyqxmd.com/read/27933733/mannich-bases-of-1-2-4-triazole-3-thione-containing-adamantane-moiety-synthesis-preliminary-anticancer-evaluation-and-molecular-modeling-studies
#5
Milorad Z Milošev, Katarina Jakovljević, Milan D Joksović, Tatjana Stanojković, Ivana Z Matić, Milka Perović, Vesna Tešić, Selma Kanazir, Milan Mladenović, Marko V Rodić, Vukadin M Leovac, Snežana Trifunović, Violeta Marković
A series of 18 novel N-Mannich bases derived from 5-adamantyl-1,2,4-triazole-3-thione was synthesized and characterized using NMR spectroscopy and X-ray diffraction technique. All derivatives were evaluated for their anticancer potential against four human cancer cell lines. Several tested compounds exerted good cytotoxic activities on K562 and HL-60 cell lines, along with pronounced selectivity, showing lower cytotoxicity against normal fibroblasts MRC-5 compared to cancer cells. The effects of compounds 5b, 5e and 5j on the cell cycle were investigated by flow cytometric analysis...
December 9, 2016: Chemical Biology & Drug Design
https://www.readbyqxmd.com/read/27933732/hypothesis-driven-physical-examination-curriculum
#6
Sharon Allen, Andrew Olson, Jeremiah Menk, James Nixon
BACKGROUND: Medical students traditionally learn physical examination skills as a rote list of manoeuvres. Alternatives like hypothesis-driven physical examination (HDPE) may promote students' understanding of the contribution of physical examination to diagnostic reasoning. We sought to determine whether first-year medical students can effectively learn to perform a physical examination using an HDPE approach, and then tailor the examination to specific clinical scenarios. Medical students traditionally learn physical examination skills as a rote list of manoeuvres CONTEXT: First-year medical students at the University of Minnesota were taught both traditional and HDPE approaches during a required 17-week clinical skills course in their first semester...
December 9, 2016: Clinical Teacher
https://www.readbyqxmd.com/read/27933728/sequential-change-detection-and-monitoring-of-temporal-trends-in-random-effects-meta-analysis
#7
Samson Henry Dogo, Allan Clark, Elena Kulinskaya
Temporal changes in magnitude of effect sizes reported in many areas of research are a threat to the credibility of the results and conclusions of meta-analysis. Numerous sequential methods for meta-analysis have been proposed to detect changes and monitor trends in effect sizes so that meta-analysis can be updated when necessary and interpreted based on the time it was conducted. The difficulties of sequential meta-analysis under the random-effects model are caused by dependencies in increments introduced by the estimation of the heterogeneity parameter τ(2) ...
December 8, 2016: Research Synthesis Methods
https://www.readbyqxmd.com/read/27933724/comparative-analysis-reveals-amino-acids-critical-for-anticancer-activity-of-peptide-cigb-552
#8
Soledad Astrada, Yolanda Gomez, Exequiel Barrera, Gonzalo Obal, Otto Pritsch, Sergio Pantano, Maribel G Vallespí, Mariela Bollati-Fogolín
Because of resistance development by cancer cells against current anticancer drugs, there is a considerable interest in developing novel antitumor agents. We have previously demonstrated that CIGB-552, a novel cell-penetrating synthetic peptide, was effective in reducing tumor size and increasing lifespan in tumor-bearing mice. Studies of protein-peptide interactions have shown that COMMD1 protein is a major mediator of CIGB-552 antitumor activity. Furthermore, a typical serine-protease degradation pattern for CIGB-552 in BALB/c mice serum was identified, yielding peptides which differ from CIGB-552 in size and physical properties...
November 2016: Journal of Peptide Science: An Official Publication of the European Peptide Society
https://www.readbyqxmd.com/read/27933720/autogenous-bone-grafting-for-treatment-of-osseous-defect-after-impacted-mandibular-third-molar-extraction-a-randomized-controlled-trial
#9
Jing Ge, Chi Yang, Jiawei Zheng, Yingkai Hu
BACKGROUND: Extraction of impacted mandibular third molar (M3) has been cited as causing osseous defect at the distal aspect of the adjacent second molar (M2). PURPOSE: This randomized controlled trial was aimed to evaluate the effect of autogenous bone grafting in situ for regeneration of periodontal osseous defect distal to the M2 compared with non-grafting after impacted M3 removal. MATERIALS AND METHODS: A total of 60 sites in 51 adult patients were enrolled and randomly assigned to the control group or the test group...
December 8, 2016: Clinical Implant Dentistry and related Research
https://www.readbyqxmd.com/read/27933717/mass-cytometry-analytical-approaches-reveal-cytokine-induced-changes-in-natural-killer-cells
#10
Elena Vendrame, Julia Fukuyama, Dara M Strauss-Albee, Susan Holmes, Catherine A Blish
BACKGROUND: Natural killer (NK) cells have antiviral and antitumor activity that could be harnessed for the treatment of infections and malignancies. To maintain cell viability and enhance antiviral and antitumor effects, NK cells are frequently treated with cytokines. Here we performed an extensive assessment of the effects of cytokines on the phenotype and function of human NK cells. METHODS: We used cytometry by time-of-flight (CyTOF) to evaluate NK cell repertoire changes after stimulation with interleukin (IL)-2, IL-15 or a combination of IL- 12/IL-15/IL-18...
December 9, 2016: Cytometry. Part B, Clinical Cytometry
https://www.readbyqxmd.com/read/27933715/efficacy-of-self-monitoring-of-blood-glucose-versus-retrospective-continuous-glucose-monitoring-in-improving-glycaemic-control-in-diabetic-kidney-disease-patients
#11
Ester Chai Kheng Yeoh, Boon Khim Lim, Sharon Fun, Julia Tong, Lee Ying Yeoh, Chee Fang Sum, Tavintharan Subramaniam, Su Chi Lim
AIMS: Patients with diabetic kidney disease (DKD) on anti-diabetic agents, are at greater risk of glycemic variations, both hypoglycemia and hyperglycemia. We aimed to compare glycemic control (using HbA1c) and hypoglycemia incidence in patients with Stage 3 DKD (eGFR 30-60 ml/min/1.73 m(2) ), receiving retrospective CGM-guided anti-diabetic therapy versus self-monitoring of blood glucose (SMBG) over 3 months. METHODS: Thirty patients with HbA1c > 8% were randomized to 6-day retrospective CGM or SMBG...
December 9, 2016: Nephrology
https://www.readbyqxmd.com/read/27933713/antipsychotic-adjunctive-therapy-to-mood-stabilizers-and-1-year-rehospitalization-rates-in-bipolar-disorder-a-cohort-study
#12
Eldar Hochman, Amir Krivoy, Ayal Schaffer, Abraham Weizman, Avi Valevski
OBJECTIVES: Antipsychotic adjunctive therapy to mood stabilizers (MSs) may improve relapse prevention; however, only a few naturalistic studies, reflecting more generalizable bipolar disorder (BD) samples, support this notion. We compared the 1-year rehospitalization rates of manic patients with bipolar I disorder (BD-I) who were discharged with MS (lithium or valproate) monotherapy or with adjunctive atypical or typical antipsychotic therapy. METHODS: A total of 201 patients with BD-I who were hospitalized with manic episodes between 2005 and 2013 were retrospectively followed for 1-year rehospitalization rates according to treatment at discharge: MS monotherapy, MS with atypical antipsychotics, and MS with typical antipsychotics...
December 9, 2016: Bipolar Disorders
https://www.readbyqxmd.com/read/27933711/using-a-co-production-prioritization-exercise-involving-south-asian-children-young-people-and-their-families-to-identify-health-priorities-requiring-further-research-and-public-awareness
#13
Logan Manikam, Rakhee Shah, Kate Reed, Gupreet Santini, Monica Lakhanpaul
OBJECTIVES: To facilitate South Asian (SA) families and health-care professionals (HCPs) participation in a prioritization exercise to co-produce child health research and public awareness agendas. DESIGN: A three-stage process was adopted involving the following: (i) systematic literature review, (ii) HCP scoping survey and (iii) focus groups of SA adolescents and families. A Punjabi- and Urdu-speaking community facilitator moderated focus groups. A British Sign Language interpreter assisted in the hard of hearing group...
December 8, 2016: Health Expectations: An International Journal of Public Participation in Health Care and Health Policy
https://www.readbyqxmd.com/read/27933703/effects-of-cpap-therapy-on-visceral-fat-thickness-carotid-intima-media-thickness-and-adipokines-in-patients-with-obstructive-sleep-apnoea
#14
Susanna S S Ng, Eric K H Liu, Ronald C W Ma, Tat-On Chan, Kin-Wang To, Ken K P Chan, Jenny Ngai, Wing-Ho Yip, Fanny W S Ko, Chun-Kwok Wong, David S C Hui
BACKGROUND AND OBJECTIVE: Obstructive sleep apnoea (OSA) is associated with an increased prevalence of metabolic syndrome. This study explores the effects of continuous positive airway pressure (CPAP) for patients with OSA on visceral and mesenteric fat thickness, carotid intima-media thickness (IMT) and adipokines. METHODS: A randomized controlled study was conducted at a teaching hospital on 90 patients newly diagnosed with OSA to receive either therapeutic CPAP or subtherapeutic CPAP for 3 months...
December 9, 2016: Respirology: Official Journal of the Asian Pacific Society of Respirology
https://www.readbyqxmd.com/read/27933699/room-temperature-arylation-of-thiols-breakthrough-with-aryl-chlorides
#15
Min Jiang, Haifang Li, Haijun Yang, Hua Fu
The formation of aryl C-S bonds is an important chemical transformation because aryl sulfides are valuable building blocks for the synthesis of biologically and pharmaceutically active molecules and organic materials. Aryl sulfides have traditionally been synthesized through the transition-metal-catalyzed cross-coupling of aryl halides with thiols. However, the aryl halides used are usually bromides and iodides; readily available, low-cost aryl chlorides often not reactive enough. Furthermore, the deactivation of transition-metal catalysts by thiols has forced chemists to use high catalyst loadings, specially designed ligands, high temperatures, and/or strong bases, thus leading to high costs and the incompatibility of some functional groups...
December 9, 2016: Angewandte Chemie
https://www.readbyqxmd.com/read/27933695/multiconfigurational-effects-in-theoretical-resonance-raman-spectra
#16
Yingjin Ma, Stefan Knecht, Markus Reiher
We analyze resonance Raman spectra of the nucleobase uracil in the short-time approximation calculated with multiconfigurational methods. We discuss the importance of static electron correlation by means of density-matrix renormalization group self-consistent field (DMRG-SCF) calculations. Our DMRG-SCF results reveal that a minimal active orbital space that leads to a qualitatively correct description of the resonance Raman spectrum of uracil should encompass parts of the $\sigma/\sigma^{\ast}$ bonding/anti-bonding orbitals of the pyrimidine ring...
December 8, 2016: Chemphyschem: a European Journal of Chemical Physics and Physical Chemistry
https://www.readbyqxmd.com/read/27933694/association-of-coffee-consumption-and-chronic-kidney-disease-a-meta-analysis
#17
Karn Wijarnpreecha, Charat Thongprayoon, Natanong Thamcharoen, Panadeekarn Panjawatanan, Wisit Cheungpasitporn
BACKGROUND/OBJECTIVES: The risk of chronic kidney disease (CKD) in individuals who regularly drink coffee is controversial. The aim of this meta-analysis was to evaluate the association between coffee consumption and CKD. METHODS: A literature search was performed using MEDLINE, EMBASE, and Cochrane Database of Systematic Reviews from inception until April 2016. We included studies that reported odd ratios or hazard ratios comparing the risk of CKD in individuals consuming significant amount of coffee vs...
December 9, 2016: International Journal of Clinical Practice
https://www.readbyqxmd.com/read/27933690/on-the-reactions-of-thiols-sulfenic-acids-and-sulfinic-acids-with-hydrogen-peroxide
#18
Jean-Philippe R Chauvin, Derek A Pratt
The reaction of thiols with H2 O2 is central to many processes essential to life, from protein folding to redox signaling. The initial products are assumed to be sulfenic acids, but their observation, and the kinetic and mechanistic characterization of their subsequent reactions, has proven challenging. The introduction of a 9-fluorotriptycene substituent enabled the use of (19) F NMR to directly monitor the reaction of a thiol with H2 O2 to yield a sulfenic acid, and its subsequent oxidation to sulfinic and sulfonic acids...
December 9, 2016: Angewandte Chemie
https://www.readbyqxmd.com/read/27933683/genetics-and-the-conservation-of-natural-populations-allozymes-to-genomes
#19
Fred W Allendorf
I consider how the study of genetic variation has influenced efforts to conserve natural populations over the last 50 years. Studies with allozymes in the 1970s provided the first estimates of the amount of genetic variation within and between natural populations at multiple loci. These early studies played an important role in developing plans to conserve species. The description of genetic variation in mitochondrial DNA in the early 1980s laid the foundation for the field of phylogeography, which provided a deeper look in time of the relationships and connectivity among populations...
December 9, 2016: Molecular Ecology
https://www.readbyqxmd.com/read/27933680/primary-breast-angiosarcoma-a-retrospective-study-of-36-cases-from-a-single-chinese-medical-institute-with-clinicopathologic-and-radiologic-correlations
#20
Lei Wang, I Weng Lao, Lin Yu, Wentao Yang, Jian Wang
The aim of this study was to present our experience with primary breast angiosarcoma (PBA) by describing a large series of cases with an emphasis on clinicopathologic and radiologic correlations. Thirty-six cases of PBA diagnosed at our institution between 2006 and 2014 were retrospectively evaluated. All but one case occurred in women with a median age of 35.5 years. The majority of patients presented with a deeply located painless mass, whereas a minority manifested as diffuse enlargement or swelling of the breast...
December 9, 2016: Breast Journal
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