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https://www.readbyqxmd.com/read/27914155/-main-causes-of-occupational-allergic-contact-dermatitis-a-three-year-study-in-the-center-of-portugal
#1
Catarina Pestana, Raquel Gomes, Vítor Pinheiro, Miguel Gouveia, Isabel Antunes, Margarida Gonçalo
INTRODUCTION: Allergic contact dermatitis, along with irritant contact dermatitis and immediate contact reactions, contact urticarial, are the most frequent dermatological occupational disease, but seldom reported to the National authorities. MATERIAL AND METHODS: We performed a 3-year retrospective study at the allergology section in the Dermatology Clinic of the University Hospital of Coimbra to evaluate the main occupations diagnosed as occupational allergic contact dermatitis, most common allergens and the effect of the modification of the work station in the evolution of the disease...
August 2016: Acta Médica Portuguesa
https://www.readbyqxmd.com/read/27914120/effect-of-glycosylation-on-the-biocatalytic-properties-of-hydroxynitrile-lyase-from-the-passion-fruit-passiflora-edulis-a-comparison-of-natural-and-recombinant-enzymes
#2
Aem Nuylert, Yuko Ishida, Yasuhisa Asano
A hydroxynitrile lyase from the passion fruit, Passiflora edulis (PeHNL) was isolated from the leaves and showed high stability in biphasic co-organic solvent systems for cyanohydrin synthesis. Cyanohydrins are important building blocks for the production of fine chemicals and pharmaceuticals. Thus, to enhance production yields of PeHNL for industrial applications, we cloned and expressed recombinant PeHNL in E. coli BL21 (DE3) and P. pastoris GS115 cells without a signal peptide sequence. The aim of the present study is to determine the effect of N-glycosylation on enzyme stability and catalytic properties in microbial expression systems...
December 3, 2016: Chembiochem: a European Journal of Chemical Biology
https://www.readbyqxmd.com/read/27914052/applications-of-normal-mode-analysis-methods-in-computational-protein-design
#3
Vincent Frappier, Matthieu Chartier, Rafael Najmanovich
Recent advances in coarse-grained normal mode analysis methods make possible the large-scale prediction of the effect of mutations on protein stability and dynamics as well as the generation of biologically relevant conformational ensembles. Given the interplay between flexibility and enzymatic activity, the combined analysis of stability and dynamics using the Elastic Network Contact Model (ENCoM) method has ample applications in protein engineering in industrial and medical applications such as in computational antibody design...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/27914045/achievements-and-challenges-in-computational-protein-design
#4
Ilan Samish
Computational protein design (CPD), a yet evolving field, includes computer-aided engineering for partial or full de novo designs of proteins of interest. Designs are defined by a requested structure, function, or working environment. This chapter describes the birth and maturation of the field by presenting 101 CPD examples in a chronological order emphasizing achievements and pending challenges. Integrating these aspects presents the plethora of CPD approaches with the hope of providing a "CPD 101". These reflect on the broader structural bioinformatics and computational biophysics field and include: (1) integration of knowledge-based and energy-based methods, (2) hierarchical designated approach towards local, regional, and global motifs and the integration of high- and low-resolution design schemes that fit each such region, (3) systematic differential approaches towards different protein regions, (4) identification of key hot-spot residues and the relative effect of remote regions, (5) assessment of shape-complementarity, electrostatics and solvation effects, (6) integration of thermal plasticity and functional dynamics, (7) negative design, (8) systematic integration of experimental approaches, (9) objective cross-assessment of methods, and (10) successful ranking of potential designs...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/27913993/antifreeze-glycopeptides-from-structure-and-activity-studies-to-current-approaches-in-chemical-synthesis
#5
REVIEW
Małgorzata Urbańczyk, Jerzy Góra, Rafał Latajka, Norbert Sewald
Antifreeze glycopeptides (AFGPs) are a class of biological antifreeze agents found predominantly in Arctic and Antarctic species of fish. They possess the ability to regulate ice nucleation and ice crystal growth, thus creating viable life conditions at temperatures below the freezing point of body fluids. AFGPs usually consist of 4-55 repetitions of the tripeptide unit Ala-Ala-Thr that is O-glycosylated at the threonine side chains with β-D-galactosyl-(1 → 3)-α-N-acetyl-D-galactosamine. Due to their interesting properties and high antifreeze activity, they have many potential applications, e...
December 2, 2016: Amino Acids
https://www.readbyqxmd.com/read/27913987/a-moral-normative-framework-for-the-judgment-of-actions-and-decisions-in-the-construction-industry-and-engineering-part-ii
#6
Omar J Alkhatib
The construction industry is typically characterized as a fragmented, multi-organizational setting in which members from different technical backgrounds and moral values join together to develop a particular business or project. The most challenging obstacle in the construction process is to achieve a successful practice and to identify and apply an ethical framework to manage the behavior of involved specialists and contractors and to ensure the quality of all completed construction activities. The framework should reflect a common moral ground for myriad people involved in this process to survive and compete ethically in today's turbulent construction market...
December 2, 2016: Science and Engineering Ethics
https://www.readbyqxmd.com/read/27913916/development-of-international-terminology-and-definitions-for-texture-modified-foods-and-thickened-fluids-used-in-dysphagia-management-the-iddsi-framework
#7
Julie A Y Cichero, Peter Lam, Catriona M Steele, Ben Hanson, Jianshe Chen, Roberto O Dantas, Janice Duivestein, Jun Kayashita, Caroline Lecko, Joseph Murray, Mershen Pillay, Luis Riquelme, Soenke Stanschus
Dysphagia is estimated to affect ~8% of the world's population (~590 million people). Texture-modified foods and thickened drinks are commonly used to reduce the risks of choking and aspiration. The International Dysphagia Diet Standardisation Initiative (IDDSI) was founded with the goal of developing globally standardized terminology and definitions for texture-modified foods and liquids applicable to individuals with dysphagia of all ages, in all care settings, and all cultures. A multi-professional volunteer committee developed a dysphagia diet framework through systematic review and stakeholder consultation...
December 2, 2016: Dysphagia
https://www.readbyqxmd.com/read/27913830/genome-scale-modeling-of-thermophilic-microorganisms
#8
Sanjeev Dahal, Suresh Poudel, R Adam Thompson
Thermophilic microorganisms are of increasing interest for many industries as their enzymes and metabolisms are highly efficient at elevated temperatures. However, their metabolic processes are often largely different from their mesophilic counterparts. These differences can lead to metabolic engineering strategies that are doomed to fail. Genome-scale metabolic modeling is an effective and highly utilized way to investigate cellular phenotypes and to test metabolic engineering strategies. In this review we chronicle a number of thermophilic organisms that have recently been studied with genome-scale models...
December 3, 2016: Advances in Biochemical Engineering/biotechnology
https://www.readbyqxmd.com/read/27913828/engineering-and-evolution-of-saccharomyces-cerevisiae-to-produce-biofuels-and-chemicals
#9
Timothy L Turner, Heejin Kim, In Iok Kong, Jing-Jing Liu, Guo-Chang Zhang, Yong-Su Jin
To mitigate global climate change caused partly by the use of fossil fuels, the production of fuels and chemicals from renewable biomass has been attempted. The conversion of various sugars from renewable biomass into biofuels by engineered baker's yeast (Saccharomyces cerevisiae) is one major direction which has grown dramatically in recent years. As well as shifting away from fossil fuels, the production of commodity chemicals by engineered S. cerevisiae has also increased significantly. The traditional approaches of biochemical and metabolic engineering to develop economic bioconversion processes in laboratory and industrial settings have been accelerated by rapid advancements in the areas of yeast genomics, synthetic biology, and systems biology...
December 3, 2016: Advances in Biochemical Engineering/biotechnology
https://www.readbyqxmd.com/read/27913788/safety-assessment-of-achillea-millefolium-as-used-in-cosmetics
#10
Lillian C Becker, Wilma F Bergfeld, Donald V Belsito, Ronald A Hill, Curtis D Klaassen, Daniel C Liebler, James G Marks, Ronald C Shank, Thomas J Slaga, Paul W Snyder, F Alan Andersen
Cosmetic ingredients derived from Achillea millefolium function in cosmetics as skin-conditioning agents-miscellaneous, skin-conditioning agents-humectants, and fragrance ingredients. The Cosmetic Ingredient Review Expert Panel (Panel) reviewed relevant animal and human data to determine their safety in cosmetics and raised concerns about cosmetics containing linalool, thujone, quercetin, hydroquinone, or α-peroxyachifolid. Because final product formulations may contain multiple botanicals, each containing similar constituents of concern, formulators are advised to be aware of these components and to avoid reaching levels that may be hazardous to consumers...
November 2016: International Journal of Toxicology
https://www.readbyqxmd.com/read/27913783/three-dimensional-printed-prosthesis-demonstrates-functional-improvement-in-a-patient-with-an-amputated-thumb-a-technical-note
#11
Keun Ho Lee, Sung Jae Kim, Yong Ho Cha, Jae Lim Kim, Dong Kyu Kim, Sang Jun Kim
BACKGROUND AND AIM: Three-dimensional printer is widely used in industry, biology, and medical fields. We report a finger prosthesis produced by a three-dimensional scanner and printer for a 67-year-old man with a right thumb amputation above the metacarpophalangeal joint. TECHNIQUE: His right amputated and left intact hands were scanned with a three-dimensional scanner, and the left-hand image was rotated to the right side to design the right thumb prosthesis. The designed prosthesis was printed with a three-dimensional printer using the fused filament fabrication output system...
December 1, 2016: Prosthetics and Orthotics International
https://www.readbyqxmd.com/read/27913774/gravity-flow-in-proposed-enteral-tube-small-bore-connectors
#12
Ryan T Hurt, Lisa M Epp, Adele K Pattinson, Wanda M Duellman, Stephen M Corner, Manpreet S Mundi
BACKGROUND: Enteral nutrition (EN) misconnections have been identified as a serious and potential deadly problem. An international effort led by EN industry leaders has developed a small-bore enteral connector (ENFit) that in theory will reduce the frequency of misconnections. Despite the potential benefit of preventing misconnections, the full impact of adoption of the ENFit connector is unknown. To assess the impact of transitioning to ENFit on our home EN (HEN) patients, the current study evaluated gravity feeding comparing 2 proposed small-bore connectors to the legacy (current connector) using various commercial formulas...
December 2, 2016: Nutrition in Clinical Practice
https://www.readbyqxmd.com/read/27913417/development-of-an-improved-system-for-the-generation-of-knock-out-mutants-of-amycolatopsis-sp-atcc-39116
#13
Florian Meyer, Hilke Pupkes, Alexander Steinbüchel
The Gram-positive actinomycete Amycolatopsis sp. ATCC 39116 is used for the industrial production of natural vanillin. Previously, the only gene deletion performed in this strain targeted the gene vdh coding for a vanillin dehydrogenase. The generation of this mutant suffered from a high number of illegitimate recombinations and the low rate of homologous recombination. To alleviate this, we constructed an optimized deletion system based on a modified suicide vector. Thereby, we were able to enhance the rate of homologous integration from less than 1% of the analyzed clones to 20% or 50% depending on the targeted gene...
December 2, 2016: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/27913415/a-highly-expressed-high-molecular-weight-s-layer-complex-of-pelosinus-strain-ufo1-binds-uranium
#14
Michael P Thorgersen, W Andrew Lancaster, Lara Rajeev, Xiaoxuan Ge, Brian J Vaccaro, Farris L Poole, Adam P Arkin, Aindrila Mukhopadhyay, Michael W W Adams
: Cells suspensions of Pelosinus sp. strain UFO1 were previously shown, using spectroscopic analysis, to sequester uranium as U(IV) complexed with carboxyl and phosphoryl ligands on protein(s). The goal of this project was to characterize the proteins involved in uranium binding. Virtually all of the uranium in UFO1 cells was associated with a heterodimeric protein, which was termed the uranium-binding complex (UBC). UBC was composed of two S-layer domain proteins encoded by UFO1_4202 and UFO1_4203...
December 2, 2016: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/27913360/real-time-decentralized-neural-control-via-backstepping-for-a-robotic-arm-powered-by-industrial-servomotors
#15
Luis A Vazquez, Francisco Jurado, Carlos E Castaneda, Victor Santibanez
This paper presents a continuous-time decentralized neural control scheme for trajectory tracking of a two degrees of freedom direct drive vertical robotic arm. A decentralized recurrent high-order neural network (RHONN) structure is proposed to identify online, in a series-parallel configuration and using the filtered error learning law, the dynamics of the plant. Based on the RHONN subsystems, a local neural controller is derived via backstepping approach. The effectiveness of the decentralized neural controller is validated on a robotic arm platform, of our own design and unknown parameters, which uses industrial servomotors to drive the joints...
December 1, 2016: IEEE Transactions on Neural Networks and Learning Systems
https://www.readbyqxmd.com/read/27913272/the-northeast-regional-sps-meeting-update-safety-pharmacology-innovations-and-applications
#16
REVIEW
Malar Pannirselvam, Tiffini Brabham, Alfred W Botchway, Donald B Hodges, Martin Traebert, Michael K Pugsley
The Safety Pharmacology Society (SPS) held a Northeast (NE) regional meeting in Boston, MA on May 13, 2016 at the Vertex Pharmaceuticals Incorporated site. There were 103 attendees from the pharmaceutical industry, contract research organizations (CROs), academia, and global regulatory agencies. An assortment of scientific topics were presented by 7 speakers that included broad topics in the cardiovascular (organ on chip, statistical power and translation of rat cardiovascular telemetry data and dual inhibition of IKr and IKs on QT interval prolongation) and central nervous system (in vitro platform for neurotoxicity, an integrated risk assessment of suicidal ideation and behavior, and EEG advances in safety pharmacology) and a novel topic discussing preclinical challenges faced in the development of a novel gene therapy...
November 29, 2016: Journal of Pharmacological and Toxicological Methods
https://www.readbyqxmd.com/read/27913228/pd-l1-immunohistochemistry-assays-for-lung-cancer-results-from-phase-1-of-the-blueprint-pd-l1-ihc-assay-comparison-project
#17
Fred R Hirsch, Abigail McElhinny, Dave Stanforth, James Ranger-Moore, Malinka Jansson, Karina Kulangara, William Richardson, Penny Towne, Debra Hanks, Bharathi Vennapusa, Amita Mistry, Rasika Kalamegham, Steve Averbuch, James Novotny, Eric Rubin, Kenneth Emancipator, Ian McCaffery, J Andrew Williams, Jill Walker, John Longshore, Ming S Tsao, Keith M Kerr
BACKGROUND: The "Blueprint PD-L1 IHC Assay Comparison Project" is an industrial-academic collaborative partnership to provide information on the analytical and clinical comparability of four PD-L1 IHC assays used in clinical trials. METHODS: 39 NSCLC tumors were stained with four PD-L1 IHC assays (22C3, 28-8, SP 142 and SP 263) as used in the clinical trials. Three experts in interpreting their respective assays independently evaluated the percentages of tumor and immune cells staining positive at any intensity...
November 29, 2016: Journal of Thoracic Oncology
https://www.readbyqxmd.com/read/27913218/methylotrophic-yeast-pichia-pastoris-as-a-chassis-organism-for-polyketide-synthesis-via-the-full-citrinin-biosynthetic-pathway
#18
Ying Xue, Chuixing Kong, Wei Shen, Chenxiao Bai, Yanna Ren, Xiangshan Zhou, Yuanxing Zhang, Menghao Cai
With the rapid development of synthetic biology, exploring various chassis organisms has become necessary to improve the heterologous biosynthesis of natural products and pharmaceuticals. In this study, we tested the potential of the industrial methylotrophic yeast strain Pichia pastoris for the heterologous synthesis of polyketides. A recombinant P. pastoris GS-pksCT-npgA carrying the Monascus purpureus citrinin polyketide synthase gene pksCT and the Aspergillus nidulans phosphopantetheinyl transferase gene npgA was constructed...
November 29, 2016: Journal of Biotechnology
https://www.readbyqxmd.com/read/27913138/compared-in-vivo-efficiency-of-nanoemulsions-unloaded-and-loaded-with-calixarene-and-soapy-water-in-the-treatment-of-superficial-wounds-contaminated-by-uranium
#19
Sophie Grivès, Guillaume Phan, Céline Bouvier-Capely, David Suhard, François Rebière, Michelle Agarande, Elias Fattal
No emergency decontamination treatment is currently available in the case of radiological skin contamination by uranium compounds. First responders in the workplace or during an industrial nuclear accident must be able to treat internal contamination through skin. For this purpose, a calixarene nanoemulsion was developed for the treatment of intact skin or superficial wounds contaminated by uranium, and the decontamination efficiency of this nanoemulsion was investigated in vitro and ex vivo. The present work addresses the in vivo decontamination efficiency of this nanoemulsion, using a rat model...
November 29, 2016: Chemico-biological Interactions
https://www.readbyqxmd.com/read/27913029/pharmacovigilance-and-biomedical-informatics-a-model-for-future-development
#20
Paul Beninger, Michael A Ibara
PURPOSE: The discipline of pharmacovigilance is rooted in the aftermath of the thalidomide tragedy of 1961. It has evolved as a result of collaborative efforts by many individuals and organizations, including physicians, patients, Health Authorities, universities, industry, the World Health Organization, the Council for International Organizations of Medical Sciences, and the International Conference on Harmonisation. Biomedical informatics is rooted in technologically based methodologies and has evolved at the speed of computer technology...
November 29, 2016: Clinical Therapeutics
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