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https://www.readbyqxmd.com/read/28102702/immunomodulating-peptides-for-food-allergy-prevention-and-treatment
#1
Daniel Lozano-Ojalvo, Rosina López-Fandiño
Among the most promising strategies currently assayed against IgE-mediated allergic diseases stands the possibility of using immunomodulating peptides to induce oral tolerance towards offending food allergens or even to prevent allergic sensitization. This review focuses on the beneficial effects of food derived immunomodulating peptides on food allergy, which can be directly exerted in the intestinal tract or once being absorbed through the intestinal epithelial barrier to interact with immune cells. Food peptides influence intestinal homeostasis by maintaining and reinforcing barrier function or affecting intestinal cell-signalling to nearby immune cells and mucus secretion...
January 19, 2017: Critical Reviews in Food Science and Nutrition
https://www.readbyqxmd.com/read/28102665/cosolute-and-crowding-effects-on-a-side-by-side-protein-dimer
#2
Alex J Guseman, Gary J Pielak
The effects of small (~102 Da) and larger (>103 Da) cosolutes on protein stability are broadly understood: excluding volume stabilizes proteins, and chemical interactions are stabilizing when repulsive, but destabilizing when attractive. Proteins, however, rarely work alone. Here, we investigate the effects of small and larger cosolutes on the equilibrium stability of the simplest defined protein-protein interactions, the side-by-side homodimer formed by the A34F variant of the 56-residue B1 domain of protein G...
January 19, 2017: Biochemistry
https://www.readbyqxmd.com/read/28102576/printable-functional-chips-based-on-nanoparticle-assembly
#3
REVIEW
Yu Huang, Wenbo Li, Meng Qin, Haihua Zhou, Xingye Zhang, Fengyu Li, Yanlin Song
With facile manufacturability and modifiability, impressive nanoparticles (NPs) assembly applications were performed for functional patterned devices, which have attracted booming research attention due to their increasing applications in high-performance optical/electrical devices for sensing, electronics, displays, and catalysis. By virtue of easy and direct fabrication to desired patterns, high throughput, and low cost, NPs assembly printing is one of the most promising candidates for the manufacturing of functional micro-chips...
January 2017: Small
https://www.readbyqxmd.com/read/28102556/structurally-stable-attractive-nanoscale-emulsions-with-dipole-dipole-interaction-driven-interdrop-percolation
#4
Kyounghee Shin, Gyeonghyeon Gong, Jonas Cuadrado, Serim Jeon, Mintae Seo, Hong Sung Choi, Jae Sung Hwang, Youngbok Lee, Alberto Fernandez-Nieves, Jin Woong Kim
This study introduces an extremely stable attractive nanoscale emulsion fluid, in which the amphiphilic block copolymer, poly(ethylene oxide)-block-poly(ε-caprolactone) (PEO-b-PCL), is tightly packed with lecithin, thereby forming a mechanically robust thin-film at the oil-water interface. The molecular association of PEO-b-PCL with lecithin is critical for formation of a tighter and denser molecular assembly at the interface, which is systematically confirmed by T2 relaxation and DSC analyses. Moreover, our suspension rheology studies also reflect the interdroplet attractions over a wide volume fraction range of the dispersed oil phase; this results in a percolated network of stable drops that exhibit no signs of coalescence or phase separation...
January 19, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28102376/insights-into-the-mechanism-of-electrochemical-ozone-production-via-water-splitting-on-the-ni-and-sb-doped-sno2-catalyst
#5
Gregory Gibson, Ziyun Wang, Christopher Hardacre, Wen-Feng Lin
The H2O splitting mechanism is a very attractive alternative used in electrochemistry for the formation of O3. The most efficient catalysts employed for this reaction at room temperature are SnO2-based, in particular the Ni/Sb-SnO2 catalyst. In order to investigate the H2O splitting mechanism density functional theory (DFT) was performed on a Ni/Sb-SnO2 surface with oxygen vacancies. By calculating different SnO2 facets, the (110) facet was deemed most stable, and further doped with Sb and Ni. On this surface, the H2O splitting mechanism was modelled paying particular attention to the final two steps, the formation of O2 and O3...
January 19, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28102314/improved-solar-driven-photocatalytic-performance-of-highly-crystalline-hydrogenated-tio2-nanofibers-with-core-shell-structure
#6
Ming-Chung Wu, Ching-Hsiang Chen, Wei-Kang Huang, Kai-Chi Hsiao, Ting-Han Lin, Shun-Hsiang Chan, Po-Yeh Wu, Chun-Fu Lu, Yin-Hsuan Chang, Tz-Feng Lin, Kai-Hsiang Hsu, Jen-Fu Hsu, Kun-Mu Lee, Jing-Jong Shyue, Krisztián Kordás, Wei-Fang Su
Hydrogenated titanium dioxide has attracted intensive research interests in pollutant removal applications due to its high photocatalytic activity. Herein, we demonstrate hydrogenated TiO2 nanofibers (H:TiO2 NFs) with a core-shell structure prepared by the hydrothermal synthesis and subsequent heat treatment in hydrogen flow. H:TiO2 NFs has excellent solar light absorption and photogenerated charge formation behavior as confirmed by optical absorbance, photo-Kelvin force probe microscopy and photoinduced charge carrier dynamics analyses...
January 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28102285/non-destructive-study-of-bulk-crystallinity-and-elemental-composition-of-natural-gold-single-crystal-samples-by-energy-resolved-neutron-imaging
#7
Anton S Tremsin, John Rakovan, Takenao Shinohara, Winfried Kockelmann, Adrian S Losko, Sven C Vogel
Energy-resolved neutron imaging enables non-destructive analyses of bulk structure and elemental composition, which can be resolved with high spatial resolution at bright pulsed spallation neutron sources due to recent developments and improvements of neutron counting detectors. This technique, suitable for many applications, is demonstrated here with a specific study of ~5-10 mm thick natural gold samples. Through the analysis of neutron absorption resonances the spatial distribution of palladium (with average elemental concentration of ~0...
January 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28102001/evaluation-of-the-hybrid-resolution-pace-model-for-the-study-of-folding-insertion-and-pore-formation-of-membrane-associated-peptides
#8
Michael D Ward, Shivangi Nangia, Eric R May
The PACE force field presents an attractive model for conducting molecular dynamics simulations of membrane-protein systems. PACE is a hybrid model, in which lipids and solvents are coarse-grained consistent with the MARTINI mapping, while proteins are described by a united atom model. However, given PACE is linked to MARTINI, which is widely used to study membranes, the behavior of proteins interacting with membranes has only been limitedly examined in PACE. In this study, PACE is used to examine the behavior of several peptides in membrane environments, namely WALP peptides, melittin and influenza hemagglutinin fusion peptide (HAfp)...
January 19, 2017: Journal of Computational Chemistry
https://www.readbyqxmd.com/read/28101815/developing-a-crowdsourcing-approach-and-tool-for-pharmacovigilance-education-material-delivery
#9
Andrew Bate, Jürgen Beckmann, Alexander Dodoo, Linda Härmark, Kenneth Hartigan-Go, Anna Hegerius, Marie Lindquist, Eugène van Puijenbroek, Marco Tuccori, Ulrich Hagemann
The number of pharmacovigilance professionals worldwide is increasing with a high staff turnover. There is a constant stream of new colleagues with an interest or need to learn about the discipline. Consequently, there is an increasing need for training in pharmacovigilance. An important step towards this has been made through developing and publishing the World Health Organization (WHO)-International Society of Pharmacovigilance (ISoP) Pharmacovigilance Curriculum. Using the Pharmacovigilance Curriculum effectively, it should be supplemented by providing comprehensive training material from various sources, and making the Pharmacovigilance Curriculum attractive and a high-utility product...
January 18, 2017: Drug Safety: An International Journal of Medical Toxicology and Drug Experience
https://www.readbyqxmd.com/read/28101308/antibacterial-resistance-in-patients-with-hematopoietic-stem-cell-transplantation
#10
REVIEW
Sehnaz Alp, Murat Akova
Recipients of hematopoietic stem cell transplantation (HSCT) are at substantial risk of bacterial, fungal, viral, and parasitic infections depending on the time elapsed since transplantation, presence of graft-versus-host disease (GVHD), and the degree of immunosuppression. Infectious complications in HSCT recipients are associated with high morbidity and mortality. Bacterial infections constitute the major cause of infectious complications, especially in the early post-transplant period. The emergence of antibacterial resistance complicates the management of bacterial infections in this patient group...
2017: Mediterranean Journal of Hematology and Infectious Diseases
https://www.readbyqxmd.com/read/28101208/effect-of-bovine-dialyzable-leukocyte-extract-on-induction-of-cell-differentiation-and-death-in-k562-human-chronic-myelogenous-leukemia-cells
#11
Crystel A Sierra-Rivera, Moisés A Franco-Molina, Edgar Mendoza-Gamboa, Pablo Zapata-Benavides, Jesús Santaolalla-Tapia, Erika E Coronado-Cerda, Reyes S Tamez-Guerra, Cristina Rodríguez-Padilla
Differentiation induction therapy is an attractive approach in leukemia treatment due to the fact that in blast crisis stage, leukemic cells lose their differentiation capacity. Therefore, it has been proposed as a therapeutic strategy to induce terminal differentiation of leukemic blast cells into a specific lineage, leading to prevention of high proliferation rates. The aim of the present study was to demonstrate the potential of cell differentiation and death induced by bovine dialyzable leukocyte extract (bDLE) in the K562 cell line...
December 2016: Oncology Letters
https://www.readbyqxmd.com/read/28100979/late-cardiac-rupture-after-amplatzer-septal-occluder-implantation
#12
Ahmet Arnaz, Yasemin Turkekul, Yusuf Yalcinbas, Arda Saygili, Tayyar Sarioglu
Transcatheter device implantation has become an attractive alternative to surgery in the closure of atrial septal defects in selected patients. However, it can lead to early and late sequelae, some of them life threatening. For example, 79 days before her admission to our emergency department with sudden-onset respiratory distress and respiratory arrest (leading to cardiac tamponade and rupture), a 22-year-old woman had undergone percutaneous closure of an atrial septal defect. We describe the damage and its treatment...
December 2016: Texas Heart Institute Journal
https://www.readbyqxmd.com/read/28100873/microrna-10a-targets-t-box-5-to-inhibit-the-development-of-cardiac-hypertrophy
#13
Dan Wang, Guanqun Zhai, Yangfei Ji, Haiyun Jing
The mechanism of cardiac hypertrophy involving microRNAs (miRNAs) is attracting increasing attention. Our study aimed to investigate the role of miR-10a in cardiac hypertrophy development and the underlying regulatory mechanism.Transverse abdominal aortic constriction (TAAC) surgery was performed to establish a cardiac hypertrophy rat model, and angiotensin II (AngII) was used to induce cardiac hypertrophy in cultured neonatal rat cardiomyocytes. Expression of T-box 5 (TBX5) and miR-10a was altered by cell transfection of siRNA or miRNA mimic/inhibitor...
January 17, 2017: International Heart Journal
https://www.readbyqxmd.com/read/28100761/the-acceptability-of-self-sampled-screening-for-hpv-dna-a-systematic-review-and-meta-analysis
#14
REVIEW
Erik J Nelson, Brandy R Maynard, Travis Loux, Jessica Fatla, Rebecca Gordon, Lauren D Arnold
OBJECTIVE: To examine whether or not self-sampled cervical screening for human papillomavirus (HPV) DNA is acceptable and if women prefer self-sampling to clinician-based sampling. DESIGN: Systematic review and meta-analysis. DATA SOURCES: Thirty-seven primary studies obtained through a comprehensive search of six electronic bibliographic databases from 1986 to 2014 and other sources. Search keywords included HPV, screening, DNA testing, vaginal testing, self-collected specimen, self-collected sample, self-sampling, self-screening, preferences and acceptability...
February 2017: Sexually Transmitted Infections
https://www.readbyqxmd.com/read/28100708/the-origin-of-floral-organ-identity-quartets
#15
Philip Ruelens, Zhicheng Zhang, Hilda van Mourik, Steven Maere, Kerstin Kaufmann, Koen Geuten
The origin of flowers has puzzled plant biologists ever since Darwin referred to their sudden appearance in the fossil record as an abominable mystery. Flowers are considered to be an assembly of protective, attractive and reproductive male and female leaf-like organs. Their origin cannot be understood by a morphological comparison to gymnosperms, their closest relatives, which develop separate male or female cones. Despite these morphological differences, gymnosperms and angiosperms possess a similar genetic toolbox consisting of phylogenetically related MADS-domain proteins...
January 18, 2017: Plant Cell
https://www.readbyqxmd.com/read/28100660/secondary-electron-effect-on-electron-beam-induced-charging-of-sio2-particle-analyzed-by-electron-holography
#16
Hiroaki Suzuki, Zentaro Akase, Kodai Niitsu, Toshiaki Tanigaki, Daisuke Shindo
Charging of a SiO2 particle induced by electron illumination was investigated by changing the illuminated area of the particle and its support film through control of the position of the mask plate inserted in a transmission electron microscope illumination system. The electric fields around the charged SiO2 particle were analyzed using electron holography. The amount of charge was evaluated quantitatively by comparing the reconstructed phase images with the simulated phase images. When the support film was not covered against the incident electron beam, secondary electrons emitted from the conductive support film were attracted to the charged particle, resulting in particle discharge...
January 17, 2017: Microscopy
https://www.readbyqxmd.com/read/28100656/perceptual-attraction-in-tool-use-evidence-for-a-reliability-based-weighting-mechanism
#17
Nienke B Debats, Marc O Ernst, Herbert Heuer
Humans are well able to operate tools whereby their hand movement is linked, via a kinematic transformation, to a spatially distant object moving in a separate plane of motion. An everyday example is controlling a cursor on a computer monitor. Despite these separate reference frames, the perceived positions of the hand and the object were found to be biased towards each other. We propose that this perceptual attraction is based on the principles by which the brain integrates redundant sensory information of single objects or events, known as optimal multisensory integration...
January 18, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/28100647/marpodb-an-open-registry-for-marchantia-polymorpha-genetic-parts
#18
Mihails Delmans, Bernardo Pollak, Jim Haseloff
Marchantia polymorpha is an extant relative of the earliest terrestrial plants and has attracted a substantial interest as a model organism for evolutionary and developmental studies. Given its relatively simple genome, compact gene families, simple morphology, ease of propagation and transformation, M. polymorpha is becoming a promising platform for plant synthetic biology. Modular genetic parts have been essential for development of synthetic biology approaches, so we sought to design an engineering oriented database for M...
January 18, 2017: Plant & Cell Physiology
https://www.readbyqxmd.com/read/28100621/recombinant-adenoviruses-displaying-matrix-2-ectodomain-epitopes-m2e-on-their-fiber-proteins-as-universal-influenza-vaccines
#19
Xinying Tang, Yong Yang, Xiaoli Xia, Chao Zhang, Xi Yang, Yufeng Song, Xinyi Dai, Min Wang, Dongming Zhou
: Influenza is a zoonotic disease that poses severe threats to public health and the global economy. Re-emerging influenza pandemics highlight the demand for universal influenza vaccines. We developed a novel virus platform, AdC68-F3M2e, by introducing three conserved M2e epitopes into the HI loop of the chimpanzee adenovirus (AdV) fiber protein. The M2e epitopes were expressed sufficiently on the AdV virion surface without affecting fiber trimerization. Additionally, one recombinant adenovirus, AdC68-F3M2e(H1-H5-H7), induced robust M2e-specific antibody responses in BALB/c mice after two sequential vaccinations and conferred efficient protection against homologous and heterologous IV challenges...
January 18, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28100507/efficacy-of-iron-supplement-bars-to-reduce-anemia-in-urban-indian-women-a-cluster-randomized-controlled-trial
#20
Rajvi Mehta, Alyssa C Platt, Xizi Sun, Mukesh Desai, Dennis Clements, Elizabeth L Turner
BACKGROUND: India's high prevalence of iron-deficiency anemia has largely been attributed to the local diet consisting of nonheme iron, which has lower absorption than that of heme iron. OBJECTIVE: We assessed the efficacy of the consumption of iron-supplement bars in raising hemoglobin concentrations and hematocrit percentages in anemic (hemoglobin concentration <12 g/dL) Indian women of reproductive age. DESIGN: The Let's be Well Red study was a 90-d, pair-matched, cluster-randomized controlled trial...
January 18, 2017: American Journal of Clinical Nutrition
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