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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/27933725/cellular-engineering-for-therapeutic-protein-production-product-quality-host-modification-and-process-improvement
#2
REVIEW
Evan Wells, Anne Skaja Robinson
Recombinant proteins offer many therapeutic advantages unavailable in traditional small molecule drugs, but the need for cellular versus chemical synthesis complicates production. Avenues for producing therapeutic biologics are continuously expanding, and developments in biochemistry, cell biology, and bioengineering fuel new discoveries that promise safer, more efficient, and cheaper drugs for consumers. Numerous approaches to express recombinant proteins exist, but Escherichia coli, Saccharomyces cerevisiae, and mammalian systems (e...
December 9, 2016: Biotechnology Journal
https://www.readbyqxmd.com/read/27933712/the-importance-of-mrna-structure-in-determining-the-pathogenicity-of-synonymous-and-non-synonymous-mutations-in-haemophilia
#3
N Hamasaki-Katagiri, B C Lin, J Simon, R C Hunt, T Schiller, E Russek-Cohen, A A Komar, H Bar, C Kimchi-Sarfaty
INTRODUCTION: Mutational analysis is commonly used to support the diagnosis and management of haemophilia. This has allowed for the generation of large mutation databases which provide unparalleled insight into genotype-phenotype relationships. Haemophilia is associated with inversions, deletions, insertions, nonsense and missense mutations. Both synonymous and non-synonymous mutations influence the base pairing of messenger RNA (mRNA), which can alter mRNA structure, cellular half-life and ribosome processivity/elongation...
December 9, 2016: Haemophilia: the Official Journal of the World Federation of Hemophilia
https://www.readbyqxmd.com/read/27933707/re-ultrasound-based-gestational-age-estimation-in-late-pregnancy-a-t-papageorghiou-b-kemp-w-stones-e-o-ohuma-s-h-kennedy-m-purwar-l-j-salomon-d-g-altman-j-a-noble-e-bertino-m-g-gravett-r-pang-l-cheikh-ismail-f-c-barros-a-lambert-y-a-jaffer-c-g-victora-z-a-bhutta
#4
https://www.readbyqxmd.com/read/27933698/sofosbuvir-plus-ribavirin-in-treatment-na%C3%A3-ve-patients-with-chronic-hepatitis-c-virus-genotype-1-or-3-infection-in-india
#5
S R Shah, A Chowdhury, R Mehta, D Kapoor, A Duseja, A Koshy, A Shukla, A Sood, K Madan, R Sud, S Nijhawan, R Pawan, M Prasad, K Kersey, D Jiang, E Svarovskaia, B Doehle, B Kanwar, M Subramanian, S K Acharya, S Sarin
Until 2014, pegylated interferon plus ribavirin was the recommended standard of care for the treatment of chronic hepatitis C virus (HCV) infection in India. This open-label phase 3b study, conducted across 14 sites in India between 31 March 2014 and 30 November 2015, evaluated the efficacy and safety of sofosbuvir plus ribavirin therapy among treatment-naïve patients with chronic genotype 1 or 3 HCV infection. A total of 117 patients with genotype 1 or 3 HCV infection were randomized 1:1 to receive sofosbuvir 400 mg and weight-based ribavirin (1000 or 1200 mg) daily for 16 or 24 weeks...
December 9, 2016: Journal of Viral Hepatitis
https://www.readbyqxmd.com/read/27933683/genetics-and-the-conservation-of-natural-populations-allozymes-to-genomes
#6
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/27933655/immunological-diversity-in-phenotypes-of-chronic-lung-allograft-dysfunction-a-comprehensive-immunohistochemical-analysis
#7
Elly Vandermeulen, Elise Lammertyn, Stijn E Verleden, David Ruttens, Hannelore Bellon, Mario Ricciardi, Jana Somers, Ken R Bracke, Kathleen Van Den Eynde, Thomas Tousseyn, Guy G Brusselle, Erik K Verbeken, Johny Verschakelen, Marie-Paule Emonds, Dirk E Van Raemdonck, Geert M Verleden, Robin Vos, Bart M Vanaudenaerde
Chronic rejection after organ transplantation is defined as a humoral- and cell-mediated immune response directed against the allograft. In lung transplantation, chronic rejection is nowadays clinically defined as a cause of chronic lung allograft dysfunction (CLAD), consisting of different clinical phenotypes including restrictive allograft syndrome (RAS) and bronchiolitis obliterans syndrome (BOS). However, the differential role of humoral and cellular immunity is not investigated up to now. Explant lungs of patients with end-stage BOS (n = 19) and RAS (n = 18) were assessed for the presence of lymphoid (B and T cells) and myeloid cells (dendritic cells, eosinophils, mast cells, neutrophils, and macrophages) and compared to nontransplant control lung biopsies (n = 21)...
November 7, 2016: Transplant International: Official Journal of the European Society for Organ Transplantation
https://www.readbyqxmd.com/read/27933645/aflatoxin-biomarkers-in-hair-may-facilitate-long-term-exposure-studies
#8
Innocent Mupunga, Christo D Izaaks, Leshweni J Shai, David R Katerere
Aflatoxins are highly toxic fungal metabolites produced by some members of the Aspergillus species. They are low molecular weight lipophilic compounds that are easily absorbed from the gastrointestinal tract. They contaminate most staple foods, including maize, peanuts, peanut butter and sorghum mainly in the tropics where hot and humid conditions promote fungal growth. Absorbed aflatoxins are metabolized by the cytochrome P450 enzyme system in the liver into toxic metabolites. Aflatoxin B (AFB)1 is the most toxic, carcinogenic and mutagenic naturally occurring toxin...
December 9, 2016: Journal of Applied Toxicology: JAT
https://www.readbyqxmd.com/read/27933637/association-of-temporal-variations-in-staffing-with-hospital-acquired-pressure-injury-in-military-hospitals
#9
Patricia A Patrician, Mary S McCarthy, Pauline Swiger, Dheeraj Raju, Sara Breckenridge-Sproat, Xiaogang Su, Kelly H Randall, Lori A Loan
To more precisely evaluate the effects of nurse staffing on hospital-acquired pressure injury (HAPI) development, data on nursing care hours per patient day (NCHPPD), nursing skill mix, patient turnover (i.e., admissions, transfers, and discharges), and patient acuity were merged with patient information from pressure injury prevalence surveys that were collected annually for the Military Nursing Outcomes Database (MilNOD) project. The MilNOD included staffing and adverse events from 56 medical-surgical, stepdown, and critical care units in 13 military hospitals over a 4-year-period...
December 9, 2016: Research in Nursing & Health
https://www.readbyqxmd.com/read/27933636/primary-headaches-in-an-elderly-population-seeking-medical-care-for-cognitive-decline
#10
Michele Feleppa, Silvia Fucci, Marcelo E Bigal
OBJECTIVES: To assess the prevalence of specific headache disorders in a population older than 65 years seeking consultation due to memory problems or cognitive impairment. METHODS: We verified the occurrence of headache symptoms and the impact of headaches on daily life. Headaches were classified as per the International Classification of Headache Disorders, 2nd edition (ICHD-2). All patients were screened with the Mini-Mental State Examination (MMSE), followed by the Selective Reminding Test and neuroimaging...
December 9, 2016: Headache
https://www.readbyqxmd.com/read/27933634/middle-cranial-fossa-approach-to-repair-tegmen-defects-assisted-by-three-dimensionally-printed-temporal-bone-models
#11
Sameer Ahmed, Kyle K VanKoevering, Stephanie Kline, Glenn E Green, H Alexander Arts
OBJECTIVES/HYPOTHESIS: To explore the perioperative utility of three-dimensionally (3D)-printed temporal bone models of patients undergoing repair of lateral skull base defects and spontaneous cerebrospinal fluid leaks with the middle cranial fossa approach. STUDY DESIGN: Case series. METHODS: 3D-printed temporal bone models-based on patient-specific, high-resolution computed tomographic imaging-were constructed using inexpensive polymer materials...
December 9, 2016: Laryngoscope
https://www.readbyqxmd.com/read/27933619/monocyte-mediated-activation-of-endothelial-cells-occurs-only-after-binding-to-extracellular-vesicles-from-red-blood-cell-products-a-process-mediated-by-%C3%AE-integrin
#12
Marleen Straat, Maike E van Hezel, Anita Böing, Anita Tuip-De Boer, Nina Weber, Rienk Nieuwland, Robin van Bruggen, Nicole P Juffermans
BACKGROUND: Red blood cell (RBC) transfusion is associated with organ failure. The mechanism remains unknown, but may include adherence of blood cells to the microvasculature. We hypothesized that RBC-derived extracellular vesicles (EVs) interact with monocytes to activate endothelial cells. STUDY DESIGN AND METHODS: Human umbilical vein endothelial cells were incubated with supernatant from fresh and stored RBC units either containing EVs or depleted from EVs, with or without the addition of immune cells...
December 2016: Transfusion
https://www.readbyqxmd.com/read/27933553/spontaneous-honeybee-behaviour-is-altered-by-persistent-organic-pollutants
#13
Jade Drummond, Sally M Williamson, Ann E Fitchett, Geraldine A Wright, Sarah J Judge
The effect of environmental pollutants on honeybee behaviour has focused mainly on currently used pesticides. However, honeybees are also exposed to persistent organic pollutants (POPs). The aim of this laboratory based study was to determine if exposure to sublethal field-relevant concentrations of POPs altered the spontaneous behaviour of foraging-age worker honeybees. Honeybees (Apis mellifera) were orally exposed to either a sublethal concentration of the polychlorinated biphenyl (PCB) mixture Aroclor 1254 (100 ng/ml), the organochlorine insecticide lindane (2...
December 8, 2016: Ecotoxicology
https://www.readbyqxmd.com/read/27933539/systems-genetics-analysis-of-iron-and-its-regulation-in-brain-and-periphery
#14
Byron C Jones, Leslie C Jellen
In this contribution, we demonstrate the utility of the systems genetics-systems biology approach to the study of iron regulation while employing a comprehensive database. We describe our work in iron regulation in the brain and periphery under normal iron and iron-restricted dietary conditions in the BXD family of recombinant inbred mouse strains. Using multiple measures, we showed wide variation among the strains in the effect of being fed an iron-restricted diet for 100 days in every measure from brain and from the periphery...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/27933537/complex-genetics-of-cardiovascular-traits-in-mice-f2-mapping-of-qtls-and-their-underlying-genes
#15
Svitlana Podliesna, Connie R Bezzina, Elisabeth M Lodder
In this chapter, we will use the example of the identification of Tnni3k as a modulator of cardiac conduction to introduce you to the use of a murine F2-generation intercross as a powerful method for the identification of novel genes relevant for cardiovascular traits. Murine F2-progeny is a genetically diverse panel of mice with differences in phenotype manifestations, e.g. cardiovascular traits such as cardiomyopathy and ECG parameters. This chapter discusses the best strategies for using F2-mice for genetic mapping...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/27933536/genetic-dissection-of-variation-in-hippocampal-intra-and-infrapyramidal-mossy-fibers-in-the-mouse
#16
Anna Delprato, Wim E Crusio
This chapter describes the genetic analysis of a morphometric neuroanatomic trait. We used the extended BXD family of recombinant inbred mouse strains with the intent to analyze the genetic bases of heritable differences in hippocampal neurocircuitry and to identify Quantitative Trait Loci that underlie these variations. A detailed description of a GeneNetwork analysis is provided using data for the intra- and infrapyramidal mossy fiber (IIPMF) terminal fields which are strongly correlated with spatial navigation/radial maze learning...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/27933534/genomic-control-of-retinal-cell-number-challenges-protocol-and-results
#17
Patrick W Keeley, Irene E Whitney, Benjamin E Reese
This chapter considers some of the challenges in obtaining accurate and consistent estimates of neuronal population size in the mouse retina, in order to identify the genetic control of cell number through QTL mapping and candidate gene analysis. We first discuss a variety of best practices for analyzing large numbers of recombinant inbred strains of mice over the course of a year in order to amass a satisfactory dataset for QTL mapping. We then consider the relative merits of using average cell density versus estimated total cell number as the target trait to be assessed, and why estimates of heritability may differ for these two traits when studying the retina in whole-mount preparations...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/27933530/visualization-of-results-from-systems-genetics-studies-in-chromosomal-context
#18
Karen Y Oróstica, Ricardo A Verdugo
This chapter describes methods currently available for visualizing results from systems genetics experiments. Here, we abstract from the statistical methods used for genetic mapping, which are dependent on the specific resource being used, i.e. F2, RILs, or outbred populations among others. We use a public dataset with results from a mouse eQTL experiment for three examples of visualization: genome-wide dot plots of marker-by-gene association, karyotype-like plots, and circos plots. Dot plots give a first overview of the results from eQTL mapping, allowing detecting genome-wide patterns of cis- and trans-genetic association to transcription level...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/27933529/qtl-mapping-and-identification-of-candidate-genes-in-do-mice-a-use-case-model-derived-from-a-benzene-toxicity-experiment
#19
Dan Gatti, John E French, Klaus Schughart
Diversity Outbred (DO) mice are a multiparental advanced generation intercross population derived from eight inbred strains which are genetically very diverse. They are maintained as an outbred population using a randomized mating design. Thus DO mice represent an ideal population to map phenotypic traits. Here, we provide a case study in which male DO mice were exposed to benzene and phenotyped for the number of micronucleated reticulocytes. We provide step-by-step R scripts for the analysis of phenotypes, genotypes, mapping of resistance gene loci and identification of candidate genes...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/27933525/expression-qtls-mapping-and-analysis-a-bayesian-perspective
#20
Martha Imprialou, Enrico Petretto, Leonardo Bottolo
The aim of expression Quantitative Trait Locus (eQTL) mapping is the identification of DNA sequence variants that explain variation in gene expression. Given the recent yield of trait-associated genetic variants identified by large-scale genome-wide association analyses (GWAS), eQTL mapping has become a useful tool to understand the functional context where these variants operate and eventually narrow down functional gene targets for disease. Despite its extensive application to complex (polygenic) traits and disease, the majority of eQTL studies still rely on univariate data modeling strategies, i...
2017: Methods in Molecular Biology
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