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https://www.readbyqxmd.com/read/28649374/screening-and-identification-of-novel-biologically-active-natural-compounds
#1
REVIEW
David Newman
With the advent of very rapid and cheap genome analyses and the linkage of these plus microbial metabolomics to potential compound structures came the realization that there was an immense sea of novel agents to be mined and tested. In addition, it is now recognized that there is significant microbial involvement in many natural products isolated from "nominally non-microbial sources". This short review covers the current screening methods that have evolved and one might even be tempted to say "devolved" in light of the realization that target-based screens had problems when the products entered clinical testing, with off-target effects being the major ones...
2017: F1000Research
https://www.readbyqxmd.com/read/28649260/tomato-udp-glucose-sterol-glycosyltransferases-a-family-of-developmental-and-stress-regulated-genes-that-encode-cytosolic-and-membrane-associated-forms-of-the-enzyme
#2
Karla Ramirez-Estrada, Nídia Castillo, Juan A Lara, Monserrat Arró, Albert Boronat, Albert Ferrer, Teresa Altabella
Sterol glycosyltransferases (SGTs) catalyze the glycosylation of the free hydroxyl group at C-3 position of sterols to produce sterol glycosides. Glycosylated sterols and free sterols are primarily located in cell membranes where in combination with other membrane-bound lipids play a key role in modulating their properties and functioning. In contrast to most plant species, those of the genus Solanum contain very high levels of glycosylated sterols, which in the case of tomato may account for more than 85% of the total sterol content...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28648174/functionalization-of-pectin-with-laccase-mediated-oxidation-products-of-ferulic-acid
#3
N Karaki, A Aljawish, L Muniglia, S Bouguet-Bonnet, S Leclerc, C Paris, J Jasniewski, C Humeau-Virot
Pectin is a natural biopolymer extracted mostly from citrus peel, sugar beet and apple pomace. In order to improve its functional properties and then to enlarge the field of its potential applications, functionalization reaction of citrus pectin with ferulic acid (FA)-oxidation products was performed in aqueous medium, at 30°C and pH7.5, in the presence of Myceliophthora thermophila laccase as biocatalyst. The conjugation between FA-oxidation products and pectin was confirmed using FTIR, UV-Vis and LC-MS analyses...
September 2017: Enzyme and Microbial Technology
https://www.readbyqxmd.com/read/28647180/helianthus-tuberosus-jerusalem-artichoke-tubers-improve-glucose-tolerance-and-hepatic-lipid-profile-in-rats-fed-a-high-fat-diet
#4
Naoto Okada, Shinya Kobayashi, Kouta Moriyama, Kohsuke Miyataka, Shinji Abe, Chiemi Sato, Kazuyoshi Kawazoe
OBJECTIVES: To analyze the effects of feeding Helianthus tuberosus (HT) tubers on glucose tolerance and lipid profile in rats fed a high-fat diet (HFD). METHODS: A normal HFD or HFD including 10 w/w% HT tubers (HFD + HT) was fed to F334/Jcl rats. After 10 weeks, organ weights, glucose tolerance, and lipid profile were analyzed. RESULTS: The body weight, liver weight, and epidermal fat content in the HFD group were higher than those of the normal group, and similar to those of the HFD + HT group...
May 2017: Asian Pacific Journal of Tropical Medicine
https://www.readbyqxmd.com/read/28646448/purification-of-the-exopolysaccharide-produced-by-alteromonas-infernus-identification-of-endotoxins-and-effective-process-to-remove-them
#5
Alicia Grivaud-Le Du, Agata Zykwinska, Corinne Sinquin, Jacqueline Ratiskol, Pierre Weiss, Claire Vinatier, Jérôme Guicheux, Christine Delbarre-Ladrat, Sylvia Colliec-Jouault
Alteromonas infernus bacterium isolated from deep-sea hydrothermal vents can produce by fermentation a high molecular weight exopolysaccharide (EPS) called GY785. This EPS described as a new source of glycosaminoglycan-like molecule presents a great potential for pharmaceutical and biotechnological applications. However, this unusual EPS is secreted by a Gram-negative bacterium and can be therefore contaminated by endotoxins, in particular the lipopolysaccharides (LPS). Biochemical and chemical analyses of the LPS extracted from A...
June 23, 2017: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28646193/fabrication-of-nitrogen-doped-nano-onions-and-their-electrocatalytic-activity-toward-the-oxygen-reduction-reaction
#6
E Y Choi, C K Kim
Nitrogen-doped nano-onions (NNO) were prepared as electrocatalytic materials for the oxygen reduction reaction (ORR). The nano-onions (NO), spherical graphitic material particles, were prepared by pyrolysis of nanodiamonds (ND). Oxidized NO (ONO) was prepared from NO by a modified Hummers' method, and this was mixed with urea, followed by pyrolysis, resulting in the formation of NNO. The nitrogen content and molar ratio of nitrogen-containing groups in the NNOs were varied by controlling the oxygen content of ONO to explore the effect of nitrogen content on the ORR activity...
June 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28645974/assessing-medical-student-knowledge-and-attitudes-about-shared-decision-making-across-the-curriculum-protocol-for-an-international-online-survey-and-stakeholder-analysis
#7
Marie-Anne Durand, Renata Yen, Paul J Barr, Nan Cochran, Johanna Aarts, France Légaré, Malcolm Reed, A James O'Malley, Peter Scalia, Geneviève Painchaud Guérard, Glyn Elwyn
INTRODUCTION: Shared decision making (SDM) is a goal of modern medicine; however, it is not currently embedded in routine care. Barriers include clinicians’ attitudes, lack of knowledge and training and time constraints. Our goal is to support the development and delivery of a robust SDM curriculum in medical education. Our objective is to assess undergraduate medical students’ knowledge of and attitudes towards SDM in four countries. METHODS AND ANALYSIS: The first phase of the study involves a web-based cross-sectional survey of undergraduate medical students from all years in selected schools across the United States (US), Canada and undergraduate and graduate students in the Netherlands...
June 23, 2017: BMJ Open
https://www.readbyqxmd.com/read/28644037/lower-risk-cannabis-use-guidelines-a-comprehensive-update-of-evidence-and-recommendations
#8
Benedikt Fischer, Cayley Russell, Pamela Sabioni, Wim van den Brink, Bernard Le Foll, Wayne Hall, Jürgen Rehm, Robin Room
BACKGROUND: Cannabis use is common in North America, especially among young people, and is associated with a risk of various acute and chronic adverse health outcomes. Cannabis control regimes are evolving, for example toward a national legalization policy in Canada, with the aim to improve public health, and thus require evidence-based interventions. As cannabis-related health outcomes may be influenced by behaviors that are modifiable by the user, evidence-based Lower-Risk Cannabis Use Guidelines (LRCUG)-akin to similar guidelines in other health fields-offer a valuable, targeted prevention tool to improve public health outcomes...
June 23, 2017: American Journal of Public Health
https://www.readbyqxmd.com/read/28643900/exploring-perspectives-of-young-onset-dementia-caregivers-with-high-versus-low-unmet-needs
#9
Joany K Millenaar, Christian Bakker, Deliane van Vliet, Raymond T C M Koopmans, Alexander Kurz, Frans R J Verhey, Marjolein E de Vugt
BACKGROUND: This study is part of the Research to Assess Policies and Strategies for Dementia in the Young project. Information about specific needs in young onset dementia (YOD) will provide the basis for the development of an e-health intervention to assist caregivers in coping with YOD in several European countries. OBJECTIVE: The aim was to investigate the issues caregivers of people with YOD face. METHODS: A qualitative content analysis method was used to analyse interviews with YOD caregivers...
June 23, 2017: International Journal of Geriatric Psychiatry
https://www.readbyqxmd.com/read/28642636/nucleotide-composition-determines-the-role-of-translational-efficiency-in-human-genes
#10
Binata Halder, Arup Kumar Malakar, Supriyo Chakraborty
The basic sequence features were analysed that influence gene expression via codon usage bias of the selected forty coding sequences of Homo sapiens in a simple prokaryotic model i.e. E. coli K-12 genome. The prime objective was to elucidate the interrelationships among tRNA gene copy numbers, synonymous codons, amino acids and translational efficiency using tRNA adaptation index. It was evident from RSCU scores and principal component analysis, that only those preferred codons were used by the isoacceptor tRNAs that had G and C base at their third codon position...
2017: Bioinformation
https://www.readbyqxmd.com/read/28640922/changes-in-hemp-secondary-fiber-production-related-to-technical-fiber-variability-revealed-by-light-microscopy-and-attenuated-total-reflectance-fourier-transform-infrared-spectroscopy
#11
Eva Fernandez-Tendero, Arnaud Day, Sandrine Legros, Anouck Habrant, Simon Hawkins, Brigitte Chabbert
Interest in hemp (Cannabis sativa L.) is increasing due to the development of a new range of industrial applications based on bast fibers. However the variability of bast fiber yield and quality represents an important barrier to further exploitation. Primary and secondary fiber content was examined in two commercial hemp varieties (Fedora 17, Santhica 27) grown under contrasted sowing density and irrigation conditions. Both growing conditions and hemp varieties impact stem tissue architecture with a large effect on the proportion of secondary fibers but not primary fibers...
2017: PloS One
https://www.readbyqxmd.com/read/28640335/construction-and-content-validation-of-checklist-for-patient-safety-in-emergency-care
#12
Marly Ryoko Amaya, Danieli Parreira da Silva Stalisz da Paixão, Leila Maria Mansano Sarquis, Elaine Drehmer de Almeida Cruz
Objective: To construct and validate a checklist for patient safety in emergency care. Method: This is methodological research conducted in Curitiba, in 2015, with construction and validation stages. The checklist was based on the guidelines of the Brazilian patient safety programme and validated online using the Delphi method, with a questionnaire, and with the participation of 23 Brazilian specialists in the first round and 20 in the second round. The data were analysed using the Content Validity Index (CVI), Cronbach's α, and Fisher's Exact Test...
June 5, 2017: Revista Gaúcha de Enfermagem
https://www.readbyqxmd.com/read/28639157/exercise-for-improving-bone-health-in-women-treated-for-stages-i-iii-breast-cancer-a-systematic-review-and-meta-analyses
#13
REVIEW
Canan P Fornusek, Sharon L Kilbreath
PURPOSE: The purpose of this study was to evaluate the efficacy of exercise, either alone or in combination with other interventions, compared to a control, for the preservation of bone mineral density (BMD) in early breast cancer (BC) patients. METHODS: A systematic search was conducted to identify randomized or quasi-randomized trials which met inclusion criteria including prescribed exercise for ≥12 months. Ten publications from seven randomized controlled trials (RCTs), involving 1199 participants, were identified...
June 21, 2017: Journal of Cancer Survivorship: Research and Practice
https://www.readbyqxmd.com/read/28638147/sensitivity-of-human-pluripotent-stem-cells-to-insulin-precipitation-induced-by-peristaltic-pump-based-medium-circulation-considerations-on-process-development
#14
Diana Massai, Emiliano Bolesani, Diana Robles Diaz, Christina Kropp, Henning Kempf, Caroline Halloin, Ulrich Martin, Tudor Braniste, Giuseppe Isu, Vanessa Harms, Umberto Morbiducci, Gerald Dräger, Robert Zweigerdt
Controlled large-scale production of human pluripotent stem cells (hPSCs) is indispensable for their envisioned clinical translation. Aiming at advanced process development in suspension culture, the sensitivity of hPSC media to continuous peristaltic pump-based circulation, a well-established technology extensively used in hydraulically-driven bioreactors, was investigated. Unexpectedly, conditioning of low protein media (i.e. E8 and TeSR-E8) in a peristaltic pump circuit induced severe viability loss of hPSCs cultured as aggregates in suspension...
June 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28636342/charge-transfer-properties-of-triarylamine-integrated-dimolybdenum-dyads
#15
Lu Chen, Suman Mallick, Ying Ning Tan, Miao Meng, Chun Y Liu
Three quadruply bonded dimolybdenum complexes equipped with a triarylamine pendant, [(DAniF)3Mo2(μ-O2CC6H4N(C6H4CH3)2] (DAniF = N,N'-di(p-anisyl)formamidinate; [OO-ph-N]), [(DAniF)3Mo2(μ-OSCC6H4N(C6H4CH3)2] ([OS-ph-N]), and [(DAniF)3Mo2(μ-S2CC6H4N(C6H4CH3)2] ([SS-ph-N]), have been synthesized and characterized by single crystal X-ray diffraction. In electrochemical measurements, the redox couple for the organic amine group becomes irreversible, reflecting the substantially strong electronic interaction between the dimetal center and organic redox site...
June 21, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28632252/improving-oncology-nurses-knowledge-about-nutrition-and-physical-activity-for-cancer-survivors
#16
Merel R van Veen, Meeke Hoedjes, Joline J Versteegen, Nienke van de Meulengraaf-Wilhelm, Ellen Kampman, Sandra Beijer
PURPOSE/OBJECTIVES: To assess what percentage of oncology nurses perceived themselves as having insufficient knowledge to provide advice on nutrition and/or physical activity (PA), which characteristics were associated with nurses' perception, and whether the content and information sources differed among those nurses.
. DESIGN: A cross-sectional study.
. SETTING: A web-based survey among oncology nurses in the Netherlands.
. SAMPLE: 355 oncology nurses provided advice on nutrition; of these, 327 provided advice on PA...
July 1, 2017: Oncology Nursing Forum
https://www.readbyqxmd.com/read/28632113/paracandidimonas-soli-gen-nov-sp-nov-isolated-from-soil
#17
Peter Kämpfer, Hans-Jürgen Busse, John A McInroy, Stefanie P Glaeser
A slightly yellow-pigmented, Gram-stain-negative, rod-shaped bacterium, strain IMT-305T, was isolated from soil in Alabama, USA. Phylogenetic analysis based on the nearly full-length 16S rRNA gene sequence placed the strain in between the genera Pusillimonas, Parapusillimonas and Candidimonas with highest 16S rRNA gene sequence similarity to the type strain of Parapusillimonas granuli (97.5 %) and Candidimonas nitroreducens (97.4 %). The genomic G+C content of strain IMT-305T was 63.9 mol%. The main cellular fatty acids were C18:1ω7c, C17:0 cyclo, C16:0 and C16:1ω7c/iso-C15:0 2-OH (detected as summed feature 3)...
June 20, 2017: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/28629486/the-collaboration-of-general-practitioners-and-nurses-in-primary-care-a-comparative-analysis-of-concepts-and-practices-in-slovenia-and-spain
#18
Kerstin Hämel, Carina Vössing
Aim A comparative analysis of concepts and practices of GP-nurse collaborations in primary health centres in Slovenia and Spain. BACKGROUND: Cross-professional collaboration is considered a key element for providing high-quality comprehensive care by combining the expertise of various professions. In many countries, nurses are also being given new and more extensive responsibilities. Implemented concepts of collaborative care need to be analysed within the context of care concepts, organisational structures, and effective collaboration...
June 20, 2017: Primary Health Care Research & Development
https://www.readbyqxmd.com/read/28629382/community-first-responders-and-responder-schemes-in-the-united-kingdom-systematic-scoping-review
#19
Viet-Hai Phung, Ian Trueman, Fiona Togher, Roderick Orner, A Niroshan Siriwardena
BACKGROUND: Community First Responder (CFR) schemes support lay people to respond to medical emergencies, working closely with ambulance services. They operate widely in the UK. There has been no previous review of UK literature on these schemes. This is the first systematic scoping review of UK literature on CFR schemes, which identifies the reasons for becoming a CFR, requirements for training and feedback and confusion between the CFR role and that of ambulance service staff. This study also reveals gaps in the evidence base for CFR schemes...
June 19, 2017: Scandinavian Journal of Trauma, Resuscitation and Emergency Medicine
https://www.readbyqxmd.com/read/28627055/cholelithiasis-in-adult-bearded-dragons-retrospective-study-of-nine-adult-bearded-dragons-pogona-vitticeps-with-cholelithiasis-between-2013-and-2015-in-southern-germany
#20
A Gimmel, H Kempf, S Öfner, D Müller, A Liesegang
With an increased number of pet reptiles, many diseases occur due to nutritional disorders. Between 2013 and 2015, irregular gallbladder contents (sludge/choleliths) in adult bearded dragons (Pogona vitticeps) were recorded in many of the routinely conducted necropsies at the reptile rescue station in Munich (Auffangstation für Reptilien, München e.V., Munich, Germany). Nine animals, six from the rescue station and three from an associated veterinary practice (Tierärztliche Praxis für Exoten, Augsburg, Germany), were studied...
June 2017: Journal of Animal Physiology and Animal Nutrition
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