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https://www.readbyqxmd.com/read/28109326/from-the-evolution-of-protein-sequences-able-to-resist-self-assembly-to-the-prediction-of-aggregation-propensity
#1
F Bemporad, M Ramazzotti
Folding of polypeptide chains into biologically active entities is an astonishingly complex process, determined by the nature and the sequence of residues emerging from ribosomes. While it has been long believed that evolution has pressed genomes so that specific sequences could adopt unique, functional three-dimensional folds, it is now clear that complex protein machineries act as quality control system and supervise folding. Notwithstanding that, events such as erroneous folding, partial folding, or misfolding are frequent during the life of a cell or a whole organism, and they can escape controls...
2017: International Review of Cell and Molecular Biology
https://www.readbyqxmd.com/read/28109282/does-a-biomedical-research-centre-affect-patient-care-in-local-hospitals
#2
Catherine A Lichten, Grace Marsden, Alexandra Pollitt, Vasiliki Kiparoglou, Keith M Channon, Jon Sussex
BACKGROUND: Biomedical research can have impacts on patient care at research-active hospitals. We qualitatively evaluated the impact of the Oxford Biomedical Research Centre (Oxford BRC), a university-hospital partnership, on the effectiveness and efficiency of healthcare in local hospitals. Effectiveness and efficiency are conceptualised in terms of impacts perceived by clinicians on the quality, quantity and costs of patient care they deliver. METHODS: First, we reviewed documentation from Oxford BRC and literature on the impact of research activity on patient care...
January 21, 2017: Health Research Policy and Systems
https://www.readbyqxmd.com/read/28108875/against-the-odds-syringe-exchange-policy-implementation-in-indiana
#3
Beth E Meyerson, Carrie A Lawrence, Laura Miller, Anthony Gillespie, Daniel Raymond, Kristen Kelley, D J Shannon
Indiana recently passed legislation allowing local governments to establish syringe exchanges. While the effectiveness of syringe exchange programming is established, there is a dearth of studies about associated policy adoption and implementation. This study documents the experiences of 24 Indiana counties engaged in the process of establishing syringe exchange programming under new state law. A mixed method, qualitative, exploratory case study was conducted from May 2015 to April 2016. We observed rapid and widespread policy adoption interest, and yet counties reported significant policy ambiguity, epidemiologic and resource capacity issues...
January 20, 2017: AIDS and Behavior
https://www.readbyqxmd.com/read/28108659/yamat-seq-an-efficient-method-for-high-throughput-sequencing-of-mature-transfer-rnas
#4
Megumi Shigematsu, Shozo Honda, Phillipe Loher, Aristeidis G Telonis, Isidore Rigoutsos, Yohei Kirino
Besides translation, transfer RNAs (tRNAs) play many non-canonical roles in various biological pathways and exhibit highly variable expression profiles. To unravel the emerging complexities of tRNA biology and molecular mechanisms underlying them, an efficient tRNA sequencing method is required. However, the rigid structure of tRNA has been presenting a challenge to the development of such methods. We report the development of Y-shaped Adapter-ligated MAture TRNA sequencing (YAMAT-seq), an efficient and convenient method for high-throughput sequencing of mature tRNAs...
January 20, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/28108319/how-the-changes-in-the-system-affect-trauma-care-provision-the-assessment-of-and-implications-for-lithuanian-trauma-service-performance-in-2007-2012
#5
Žilvinas Dambrauskas, Vytautas Aukštakalnis, Aurika Karbonskienė, Dmitrijus Kačiurinas, Jolanta Vokietienė, Robertas Lapka, Algimantas Pamerneckas, Narūnas Porvaneckas, Kęstutis Stašaitis, Nedas Jasinskas, Paulius Dobožinskas, Dinas Vaitkaitis, Raimundas Lunevičius
OBJECTIVE: The aim of this study was to identify and assess the effects of changes in the Lithuanian trauma service from 2007 to 2012. We postulate that the implications derived from this study will be of importance to trauma policy planners and makers in Lithuania and throughout other countries of Eastern and Central Europe. MATERIALS AND METHODS: Out of 10,390 trauma admissions to four trauma centers in 2007, 294 patients (2.8%) were randomly selected for the first arm of a representative study sample...
January 6, 2017: Medicina
https://www.readbyqxmd.com/read/28108091/implementation-of-a-simple-innovative-system-for-postprescription-antibiotic-review-based-on-computerized-tools-with-shared-access
#6
F Bouchand, A Dinh, A L Roux, B Davido, H Michelon, M Lepainteur, B Legendre, F El Sayed, I Pierre, J Salomon, C Lawrence, C Perronne, M Villart, A-C Crémieux
BACKGROUND: Controlling antibiotic use in healthcare establishments limits their consumption and the emergence of bacterial resistance. AIM: To evaluate the efficiency of an innovative antibiotic stewardship strategy implemented over three years in a university hospital. METHODS: An antimicrobial multi-disciplinary team (AMT) [pharmacist, microbiologist and infectious disease specialist (IDS)] conducted a postprescription review. Specific coding of targeted antibiotics (including broad-spectrum β-lactams, glycopeptides, lipopeptides, fluoroquinolones and carbapenems) in the computerized physician order entry allowed recording of all new prescriptions...
November 26, 2016: Journal of Hospital Infection
https://www.readbyqxmd.com/read/28107495/germination-response-of-four-alien-congeneric-amaranthus-species-to-environmental-factors
#7
Jian-Hua Hao, Shuang-Shuang Lv, Saurav Bhattacharya, Jian-Guo Fu
Seed germination is the key step for successful establishment, growth and further expansion of population especially for alien plants with annual life cycle. Traits like better adaptability and germination response were thought to be associated with plant invasion. However, there are not enough empirical studies correlating adaptation to environmental factors with germination response of alien invasive plants. In this study, we conducted congeneric comparisons of germination response to different environmental factors such as light, pH, NaCl, osmotic and soil burials among four alien amaranths that differ in invasiveness and have sympatric distribution in Jiangsu Province, China...
2017: PloS One
https://www.readbyqxmd.com/read/28106984/pore-space-partition-in-metal-organic-frameworks
#8
Quan-Guo Zhai, Xianhui Bu, Xiang Zhao, Dong-Sheng Li, Pingyun Feng
Metal-organic framework (MOF) materials have emerged as one of the favorite crystalline porous materials (CPM) because of their compositional and geometric tunability and many possible applications. In efforts to develop better MOFs for gas storage and separation, a number of strategies including creation of open metal sites and implantation of Lewis base sites have been used to tune host-guest interactions. In addition to these chemical factors, the geometric features such as pore size and shape, surface area, and pore volume also play important roles in sorption energetics and uptake capacity...
January 20, 2017: Accounts of Chemical Research
https://www.readbyqxmd.com/read/28106849/a-reinforcement-learning-model-equipped-with-sensors-for-generating-perception-patterns-implementation-of-a-simulated-air-navigation-system-using-ads-b-automatic-dependent-surveillance-broadcast-technology
#9
Santiago Álvarez de Toledo, Aurea Anguera, José M Barreiro, Juan A Lara, David Lizcano
Over the last few decades, a number of reinforcement learning techniques have emerged, and different reinforcement learning-based applications have proliferated. However, such techniques tend to specialize in a particular field. This is an obstacle to their generalization and extrapolation to other areas. Besides, neither the reward-punishment (r-p) learning process nor the convergence of results is fast and efficient enough. To address these obstacles, this research proposes a general reinforcement learning model...
January 19, 2017: Sensors
https://www.readbyqxmd.com/read/28106820/current-and-emerging-technology-for-continuous-glucose-monitoring
#10
REVIEW
Cheng Chen, Xue-Ling Zhao, Zhan-Hong Li, Zhi-Gang Zhu, Shao-Hong Qian, Andrew J Flewitt
Diabetes has become a leading cause of death worldwide. Although there is no cure for diabetes, blood glucose monitoring combined with appropriate medication can enhance treatment efficiency, alleviate the symptoms, as well as diminish the complications. For point-of-care purposes, continuous glucose monitoring (CGM) devices are considered to be the best candidates for diabetes therapy. This review focuses on current growth areas of CGM technologies, specifically focusing on subcutaneous implantable electrochemical glucose sensors...
January 19, 2017: Sensors
https://www.readbyqxmd.com/read/28106348/a-biosurfactant-inspired-heptapeptide-with-improved-specificity-to-kill-mrsa
#11
Yuan Liu, Shuangyang Ding, Richard Dietrich, Erwin Märtlbauer, Kui Zhu
The emergence and rapid spread of methicillin-resistant Staphylococcus aureus (MRSA) poses a serious threat to public health. New antibiotics and strategies are urgently needed to combat S. aureus associated infections. Bacaucin, a novel cyclic lipopeptide from Bacillus subtilis CAU21, is reported. Bacaucin shows broad antibacterial activity against Gram-positive bacteria, but is also hemolytic and cytotoxic. However, bacaucin-1, a bacaucin-inspired ring-opened heptapeptide, shows specific antibacterial activity against MRSA by a membrane-disruptive mechanism without detectable toxicity to mammalian cells or induction of bacterial resistance...
February 1, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28106305/diversity-oriented-peptide-stapling-a-third-generation-cuaac-stapling-and-functionalisation-strategy
#12
Thu Tran Phuong, Christian Ørnbøl Larsen, Tobias Røndbjerg, Martina De Foresta, Micha Ben Achim Kunze, Ales Marek, Jacob Hartvig Løper, Lotte-Emilie Boyhus, Astrid Knuhtsen, Kresten Lindorff-Larsen, Daniel Sejer Pedersen
The introduction of macrocyclic constraints in peptides (peptide stapling) is an important tool within peptide medicinal chemistry for stabilising and pre-organising peptides in a desired conformation. In recent years, the copper-catalysed azide-alkyne cycloaddition (CuAAC) has emerged as a powerful method for peptide stapling. However, to date CuAAC stapling has not provided a simple method for obtaining peptides that are easily diversified further. In the present study, we report a new diversity-oriented peptide stapling (DOPS) methodology based on CuAAC chemistry...
January 20, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28104333/response-of-lemna-gibba-l-to-high-and-environmentally-relevant-concentrations-of-ibuprofen-removal-metabolism-and-morpho-physiological-traits-for-biomonitoring-of-emerging-contaminants
#13
D Di Baccio, F Pietrini, P Bertolotto, S Pérez, D Barcelò, M Zacchini, E Donati
The increasing worldwide consumption of pharmaceuticals and personal care products such as ibuprofen (IBU) is leading to the widespread and persistent occurrence of these chemicals and their transformation products in soils and waters. Although at low concentrations, the continuous discharge of these micropollutants and the incomplete removal by the actual wastewater treatments can provoke accumulation in the environment with risks for the trophic chain. Non-target organisms as duckweed can be used for the environmental monitoring of pharmaceutical emerging contaminants...
January 16, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28104296/impact-of-sentinel-lymph-node-mapping-on-recurrence-patterns-in-endometrial-cancer
#14
Jeffrey How, Caroline Gauthier, Jeremie Abitbol, Susie Lau, Shannon Salvador, Raphael Gotlieb, Manuela Pelmus, Alex Ferenczy, Stephan Probst, Sonya Brin, Asma Fatnassi, Walter Gotlieb
BACKGROUND: Sentinel lymph node (SLN) mapping has emerged as a promising solution to the ongoing debate regarding lymphadenectomy in the initial surgical management of endometrial cancer. Currently, little is known about its possible impact on location of disease recurrence compared to systematic lymphadenectomy. METHODS: In this retrospective study, 472 consecutive patients with endometrial cancer who underwent either SLN mapping (SLN cohort, n=275) or systematic lymphadenectomy (LND cohort, n=197) from sequential, non-overlapping historical time points were compared...
January 16, 2017: Gynecologic Oncology
https://www.readbyqxmd.com/read/28104273/physiologically-based-predictive-analytics-using-the-heart-rate-to-systolic-ratio-significantly-improves-the-timeliness-and-accuracy-of-sepsis-prediction-compared-to-sirs
#15
Omar K Danner, Sandra Hendren, Ethel Santiago, Brittany Nye, Prasad Abraham
BACKGROUND: Enhancing the efficiency of diagnosis and treatment of severe sepsis by using physiologically-based, predictive analytical strategies has not been fully explored. We hypothesize assessment of heart-rate-to-systolic-ratio significantly increases the timeliness and accuracy of sepsis prediction after emergency department (ED) presentation. METHODS: We evaluated the records of 53,313 ED patients from a large, urban teaching hospital between January and June 2015...
January 7, 2017: American Journal of Surgery
https://www.readbyqxmd.com/read/28103917/a-fast-and-robust-protocol-for-metataxonomic-analysis-using-rnaseq-data
#16
Jeremy W Cox, Richard A Ballweg, Diana H Taft, Prakash Velayutham, David B Haslam, Aleksey Porollo
BACKGROUND: Metagenomics is a rapidly emerging field aimed to analyze microbial diversity and dynamics by studying the genomic content of the microbiota. Metataxonomics tools analyze high-throughput sequencing data, primarily from 16S rRNA gene sequencing and DNAseq, to identify microorganisms and viruses within a complex mixture. With the growing demand for analysis of the functional microbiome, metatranscriptome studies attract more interest. To make metatranscriptomic data sufficient for metataxonomics, new analytical workflows are needed to deal with sparse and taxonomically less informative sequencing data...
January 19, 2017: Microbiome
https://www.readbyqxmd.com/read/28103803/variational-inference-for-rare-variant-detection-in-deep-heterogeneous-next-generation-sequencing-data
#17
Fan Zhang, Patrick Flaherty
BACKGROUND: The detection of rare single nucleotide variants (SNVs) is important for understanding genetic heterogeneity using next-generation sequencing (NGS) data. Various computational algorithms have been proposed to detect variants at the single nucleotide level in mixed samples. Yet, the noise inherent in the biological processes involved in NGS technology necessitates the development of statistically accurate methods to identify true rare variants. RESULTS: We propose a Bayesian statistical model and a variational expectation maximization (EM) algorithm to estimate non-reference allele frequency (NRAF) and identify SNVs in heterogeneous cell populations...
January 19, 2017: BMC Bioinformatics
https://www.readbyqxmd.com/read/28103802/proteomics-informed-by-transcriptomics-for-characterising-active-transposable-elements-and-genome-annotation-in-aedes-aegypti
#18
Kevin Maringer, Amjad Yousuf, Kate J Heesom, Jun Fan, David Lee, Ana Fernandez-Sesma, Conrad Bessant, David A Matthews, Andrew D Davidson
BACKGROUND: Aedes aegypti is a vector for the (re-)emerging human pathogens dengue, chikungunya, yellow fever and Zika viruses. Almost half of the Ae. aegypti genome is comprised of transposable elements (TEs). Transposons have been linked to diverse cellular processes, including the establishment of viral persistence in insects, an essential step in the transmission of vector-borne viruses. However, up until now it has not been possible to study the overall proteome derived from an organism's mobile genetic elements, partly due to the highly divergent nature of TEs...
January 19, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28103771/structure-based-study-of-natural-products-with-anti-schistosoma-activity
#19
Ibezim Akachukwu, Olujide Oludayo Olubiyi, Ata Kosisochukwu, Mbah Chika John, Nwodo Ngozi Justina
: Background Schistosomiasis is a parasitic protozoal disease caused by flatworms of the genus Schistosoma. Although the disease threatens millions of lives, it is still at the top list of neglected tropical diseases and praziquantel, the only common schistosocidal drug in use, has records of decreasing efficiency and cases of resistance. Also, reports revealed that people in the rural areas, who are most affected, rely mostly on traditional herbal medicines because of limited access to modern healthcare...
January 19, 2017: Current Computer-aided Drug Design
https://www.readbyqxmd.com/read/28103685/an-effective-bacterial-fucosidase-for-glycoprotein-remodeling
#20
Tsung-I Tsai, Shiou-Ting Li, Chiu-Ping Liu, Karen Y Chen, Sachin S Shivatare, Chin-Wei Lin, Shih-Fen Liao, Chih-Wei Lin, Tsui-Ling Hsu, Ying-Ta Wu, Ming-Hung Tsai, Meng-Yu Lai, Nan-Horng Lin, Chung-Yi Wu, Chi-Huey Wong
Fucose is an important component of many oligo- and polysaccharide structures as well as glycoproteins and glycolipids, which are often associated with a variety of physiological processes ranging from fertilization, embryogenesis, signal transduction, and disease progression, such as rheumatoid arthritis, inflammation, and cancer. The enzyme α-l-fucosidase is involved in the cleavage of the fucosidic bond in glycans and glycoconjugates, particularly the Fuc-α-1,2-Gal, Fuc-α-1,3/4-GlcNAc, and Fuc-α-1,6-GlcNAc linkages...
January 20, 2017: ACS Chemical Biology
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