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https://www.readbyqxmd.com/read/28625065/physical-texturing-for-superhydrophobic-polymeric-surfaces-a-design-perspective
#1
Jing Yang Quek, Christopher L Magee, Hong Yee Low
Surface wetting on textured surface is classically explained by Cassie-Baxter or Wenzel's theories. However, in recent years, an increasing number of complex surface topographies with super-hydrophobic properties were achieved without prediction or simulation using these theories. One example is biomimetic surfaces. In many instances, theories were used to explain surface properties found in nature but have not led to or predicted the complex topographies. Although new wetting theories continue to emerge, there is not yet a set of design rules to guide the selection of surface topographies to achieve super-hydrophobicity...
June 18, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28615003/3d-deep-convolutional-neural-networks-for-amino-acid-environment-similarity-analysis
#2
Wen Torng, Russ B Altman
BACKGROUND: Central to protein biology is the understanding of how structural elements give rise to observed function. The surfeit of protein structural data enables development of computational methods to systematically derive rules governing structural-functional relationships. However, performance of these methods depends critically on the choice of protein structural representation. Most current methods rely on features that are manually selected based on knowledge about protein structures...
June 14, 2017: BMC Bioinformatics
https://www.readbyqxmd.com/read/28609787/molecular-structures-guide-the-engineering-of-chromatin
#3
Stefan J Tekel, Karmella A Haynes
Chromatin is a system of proteins, RNA, and DNA that interact with each other to organize and regulate genetic information within eukaryotic nuclei. Chromatin proteins carry out essential functions: packing DNA during cell division, partitioning DNA into sub-regions within the nucleus, and controlling levels of gene expression. There is a growing interest in manipulating chromatin dynamics for applications in medicine and agriculture. Progress in this area requires the identification of design rules for the chromatin system...
June 13, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/28609145/three-phase-partitioning-as-an-elegant-and-versatile-platform-applied-to-non-chromatographic-bioseparation-processes
#4
Jing-Kun Yan, Yao-Yao Wang, Wen-Yi Qiu, Haile Ma, Zhen-Bin Wang, Jian-Yong Wu
In recent years, a big trend has been the development of rapid, green, efficient, economical, and scalable approaches for the separation and purification of bioactive molecules from natural sources, which can be used in food, cosmetics, and medicine. As a new non-chromatographic bioseparation technology, three-phase partitioning (TPP) is attracting the attention of a growing number of scientists and engineers. Although a number of studies have been published in the last 40 years regarding the extraction, separation, and purification of numerous bioactive molecules using TPP systems, a background review on TPP partitioning fundamentals and its applications is much needed...
June 13, 2017: Critical Reviews in Food Science and Nutrition
https://www.readbyqxmd.com/read/28606713/rhabdomyolysis-and-coeliac-disease-a-causal-or-casual-association-a-case-report-and-review-of-literature
#5
Claudia Mandato, Alessandro Rossi, Mariano Caldore, Marta Lamba, Michele Rocco, Renata Auricchio, Pietro Vajro, Paolo Siani
BACKGROUND: Rhabdomyolysis is a rare, potentially life-threatening condition, caused by multiple disorders. The association with Coeliac Disease (CD) has been rarely reported and in these cases muscular damage was imputed to hypokalemia. Herein we describe a new case of severe rhabdomyolysis in a child subsequently diagnosed as affected by CD, and review previous reports. CASE PRESENTATION: A 3-year-old boy was referred for diarrhea, brown urine, muscular pain/weakness, and no history of muscular trauma...
June 9, 2017: Clinics and Research in Hepatology and Gastroenterology
https://www.readbyqxmd.com/read/28594867/gene-essentiality-conservation-index-and-co-evolution-of-genes-in-cyanobacteria
#6
Gopi Siva Sai Tiruveedula, Pramod P Wangikar
Cyanobacteria, a group of photosynthetic prokaryotes, dominate the earth with ~ 1015 g wet biomass. Despite diversity in habitats and an ancient origin, cyanobacterial phylum has retained a significant core genome. Cyanobacteria are being explored for direct conversion of solar energy and carbon dioxide into biofuels. For this, efficient cyanobacterial strains will need to be designed via metabolic engineering. This will require identification of target knockouts to channelize the flow of carbon toward the product of interest while minimizing deletions of essential genes...
2017: PloS One
https://www.readbyqxmd.com/read/28588218/a-semi-high-throughput-method-for-screening-small-bispecific-antibodies-with-high-cytotoxicity
#7
Aruto Sugiyama, Mitsuo Umetsu, Hikaru Nakazawa, Teppei Niide, Tomoko Onodera, Katsuhiro Hosokawa, Shuhei Hattori, Ryutaro Asano, Izumi Kumagai
Small bispecific antibodies that induce T-cell-mediated cytotoxicity have the potential to damage late-stage tumor masses to a clinically relevant degree, but their cytotoxicity is critically dependent on their structural and functional properties. Here, we constructed an optimized procedure for identifying highly cytotoxic antibodies from a variety of the T-cell-recruiting antibodies engineered from a series of antibodies against cancer antigens of epidermal growth factor receptor family and T-cell receptors...
June 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28586730/a-multifunctional-organosilica-cross-linker-for-the-bio-conjugation-of-gold-nanorods
#8
Sarah Lai, Sonia Centi, Claudia Borri, Fulvio Ratto, Lucia Cavigli, Filippo Micheletti, Bjӧrn Kemper, Steffi Ketelhut, Tatiana Kozyreva, Leonardo Gonnelli, Francesca Rossi, Stefano Colagrande, Roberto Pini
We report on the use of organosilica shells to couple gold nanorods to functional peptides and modulate their physiochemical and biological profiles. In particular, we focus on the case of cell penetrating peptides, which are used to load tumor-tropic macrophages and implement an innovative drug delivery system for photothermal and photoacoustic applications. The presence of organosilica exerts subtle effects on multiple parameters of the particles, including their size, shape, electrokinetic potential, photostability, kinetics of endocytic uptake and cytotoxicity, which are investigated by the interplay of colorimetric methods and digital holographic microscopy...
May 31, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28582463/drug-resistance-testing-through-remote-genotyping-and-predicted-treatment-options-in-human-immunodeficiency-virus-type-1-infected-tanzanian-subjects-failing-first-or-second-line-antiretroviral-therapy
#9
Jenny Svärd, Sabina Mugusi, Doreen Mloka, Ujjwal Neogi, Genny Meini, Ferdinand Mugusi, Francesca Incardona, Maurizio Zazzi, Anders Sönnerborg
INTRODUCTION: Antiretroviral therapy (ART) has been successfully introduced in low-middle income countries. However an increasing rate of ART failure with resistant virus is reported. We therefore described the pattern of drug resistance mutations at antiretroviral treatment (ART) failure in a real-life Tanzanian setting using the remote genotyping procedure and thereafter predicted future treatment options using rule-based algorithm and the EuResist bioinformatics predictive engine. According to national guidelines, the default first-line regimen is tenofovir + lamivudine + efavirenz, but variations including nevirapine, stavudine or emtricitabine can be considered...
2017: PloS One
https://www.readbyqxmd.com/read/28560191/application-of-fuzzy-logic-in-oral-cancer-risk-assessment
#10
Ioana Scrobotă, Grigore Băciuț, Adriana Gabriela Filip, Bianca Todor, Florin Blaga, Mihaela Felicia Băciuț
BACKGROUND: The mapping of the malignization mechanism is still incomplete, but oxidative stress is strongly correlated to carcinogenesis. In our research, using fuzzy logic, we aimed to estimate the oxidative stress related-cancerization risk of the oral potentially malignant disorders. METHODS: Serum from 16 patients diagnosed (clinical and histopathological) with oral potentially malignant disorders (Dept. of Cranio-Maxillofacial Surgery and Radiology, "Iuliu Hațieganu" University of Medicine and Pharmacy, Cluj Napoca, Romania) was processed fluorometric for malondialdehyde and proton donors assays (Dept...
May 2017: Iranian Journal of Public Health
https://www.readbyqxmd.com/read/28548584/the-sex-disparity-in-risky-driving-a-survey-of-colombian-young-drivers
#11
Oscar Oviedo-Trespalacios, Bridie Scott-Parker
OBJECTIVE: The overrepresentation of young drivers in poor road safety outcomes has long been recognised as a global road safety issue. In addition, the overrepresentation of males in crash statistics has also been recognised as a pervasive young driver problem. Whilst progress in road safety evidenced as a stabilisation and/or reduction in poor road safety outcomes has been made in developed nations, less-developed nations contribute the greatest road safety trauma, and developing nations such as Colombia continue to experience increasing trends in fatality rates...
May 26, 2017: Traffic Injury Prevention
https://www.readbyqxmd.com/read/28543417/toward-public-bioethics
#12
EDITORIAL
Gregory E Kaebnick
This issue of the Hastings Center Report (May-June 2017) features a couple of interesting takes on the governance challenges of emerging technologies. In an essay on the National Academies of Science, Engineering, and Medicine report published this February on human germ-line gene editing, Eric Juengst, a philosopher at the University of North Carolina, argues that the NASEM committee did not manage to rethink the rules. Juengst reaches what he calls an "eccentric conclusion": "The committee's 2017 consensus report has been widely interpreted as 'opening the door' to inheritable human genetic modification and holding a line against enhancement interventions...
May 2017: Hastings Center Report
https://www.readbyqxmd.com/read/28537592/programming-molecular-self-assembly-of-intrinsically-disordered-proteins-containing-sequences-of-low-complexity
#13
Joseph R Simon, Nick J Carroll, Michael Rubinstein, Ashutosh Chilkoti, Gabriel P López
Dynamic protein-rich intracellular structures that contain phase-separated intrinsically disordered proteins (IDPs) composed of sequences of low complexity (SLC) have been shown to serve a variety of important cellular functions, which include signalling, compartmentalization and stabilization. However, our understanding of these structures and our ability to synthesize models of them have been limited. We present design rules for IDPs possessing SLCs that phase separate into diverse assemblies within droplet microenvironments...
June 2017: Nature Chemistry
https://www.readbyqxmd.com/read/28532572/rates-and-causes-of-accidents-for-general-aviation-aircraft-operating-in-a-mountainous-and-high-elevation-terrain-environment
#14
Marisa Aguiar, Alan Stolzer, Douglas D Boyd
BACKGROUND: Flying over mountainous and/or high elevation terrain is challenging due to rapidly changeable visibility, gusty/rotor winds and downdrafts and the necessity of terrain avoidance. Herein, general aviation accident rates and mishap cause/factors were determined (2001-2014) for a geographical region characterized by such terrain. METHODS: Accidents in single piston engine-powered aircraft for states west of the US continental divide characterized by mountainous terrain and/or high elevation (MEHET) were identified from the NTSB database...
May 19, 2017: Accident; Analysis and Prevention
https://www.readbyqxmd.com/read/28531339/limtox-a-web-tool-for-applied-text-mining-of-adverse-event-and-toxicity-associations-of-compounds-drugs-and-genes
#15
Andres Cañada, Salvador Capella-Gutierrez, Obdulia Rabal, Julen Oyarzabal, Alfonso Valencia, Martin Krallinger
A considerable effort has been devoted to retrieve systematically information for genes and proteins as well as relationships between them. Despite the importance of chemical compounds and drugs as a central bio-entity in pharmacological and biological research, only a limited number of freely available chemical text-mining/search engine technologies are currently accessible. Here we present LimTox (Literature Mining for Toxicology), a web-based online biomedical search tool with special focus on adverse hepatobiliary reactions...
May 22, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/28520407/controlling-configurational-isomerism-in-three-component-colloidal-hybrid-nanoparticles
#16
James M Hodges, Raymond E Schaak
Colloidal hybrid nanoparticles are solution-dispersible constructs that join together multiple distinct nanoscale materials through direct solid-solid interfaces. Given their multifunctionality and synergistic properties that emerge from interfacial coupling, hybrid nanoparticles are of interest for applications in biomedical imaging, solar energy conversion, heterogeneous catalysis, nanophotonics, and beyond. High-order hybrid nanoparticles, which incorporate three or more nanocrystal domains, offer greater tunability and functional diversity relative to one or two-component nanoparticles...
May 18, 2017: Accounts of Chemical Research
https://www.readbyqxmd.com/read/28511067/a-fuzzy-logic-based-tool-to-assess-beef-cattle-ranching-sustainability-in-complex-environmental-systems
#17
Sandra A Santos, Helano Póvoas de Lima, Silvia M F S Massruhá, Urbano G P de Abreu, Walfrido M Tomás, Suzana M Salis, Evaldo L Cardoso, Márcia Divina de Oliveira, Márcia Toffani S Soares, Antônio Dos Santos, Luiz Orcírio F de Oliveira, Débora F Calheiros, Sandra M A Crispim, Balbina M A Soriano, Christiane O G Amâncio, Alessandro Pacheco Nunes, Luiz Alberto Pellegrin
One of the most relevant issues in discussion worldwide nowadays is the concept of sustainability. However, sustainability assessment is a difficult task due to the complexity of factors involved in the natural world added to the human interference. In order to assess the sustainability of beef ranching in complex and uncertain tropical environment systems this paper describes a decision support system based on fuzzy rule-approach, the Sustainable Pantanal Ranch (SPR). This tool was built by a set of measurements and indicators integrated by fuzzy logic to evaluate the attributes of the three dimensions of sustainability...
May 13, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28508533/intermolecular-charge-transfer-interactions-facilitate-two-photon-absorption-in-styrylpyridine-tetracyanobenzene-cocrystals
#18
Lingjie Sun, Weigang Zhu, Wei Wang, Fangxu Yang, Congcong Zhang, Shufeng Wang, Xiaotao Zhang, Rongjin Li, Huanli Dong, Wenping Hu
Cocrystals of 4-styrylpyridine and 1,2,4,5-tetracyanobenzene were successfully prepared by supramolecular self-assembly. Donor-acceptor interactions between the molecular components are the main driving force for self-assembly and contribute to intermolecular charge transfer. The cocrystals possess two-photon absorption properties that are not observed in the individual components; suggesting that two-photon absorption originates from intermolecular charge-transfer interactions in the donor-acceptor system...
June 26, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28506197/high-resolution-mass-spectrometry-confirms-the-presence-of-a-hydroxyproline-hyp-post-translational-modification-in-the-ggggp-linker-of-an-fc-fusion-protein
#19
Chris Spahr, Kannan Gunasekaran, Kenneth W Walker, Stone D-H Shi
Flexible and protease resistant (G4S)n linkers are used extensively in protein engineering to connect various protein domains. Recently, several groups have observed xylose-based O-glycosylation at linker Ser residues that yield unwanted heterogeneity and may affect product quality. Because of this, an engineering effort was implemented to explore different linker sequence constructs. Here, we demonstrate the presence of an unexpected hydroxylation of a prolyl residue in the linker, made possible through the use of high-resolution mass spectrometry (HR-MS) and MSn...
May 16, 2017: MAbs
https://www.readbyqxmd.com/read/28500683/induction-of-telomere-mediated-chromosomal-truncation-and-behavior-of-truncated-chromosomes-in-brassica-napus
#20
Xiaohong Yan, Chen Li, Jie Yang, Lijun Wang, Chenghong Jiang, Wenhui Wei
Engineered minichromosomes could be stably inherited and serve as a platform for simultaneously transferring and stably expressing multiple genes. Chromosomal truncation mediated by repeats of telomeric sequences is a promising approach for the generation of minichromosomes. In the present work, direct repetitive sequences of Arabidopsis telomere were used to study telomere-mediated truncation of chromosomes in Brassica napus. Transgenes containing alien Arabidopsis telomere were successfully obtained, and Southern blotting and fluorescence in situ hybridization (FISH) results show that the transgenes resulted in successful chromosomal truncation in B...
May 13, 2017: Plant Journal: for Cell and Molecular Biology
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