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https://www.readbyqxmd.com/read/28922750/identification-of-iridoid-glucoside-transporters-in-catharanthus-roseus
#1
Bo Larsen, Victoria L Fuller, Jacob Pollier, Alex Van Moerkercke, Fabian Schweizer, Richard Payne, Maite Colinas, Sarah E O'Connor, Alain Goossens, Barbara A Halkier
Monoterpenoid indole alkaloids (MIAs) are plant defense compounds and high-value pharmaceuticals. Biosynthesis of the universal MIA precursor, secologanin, is organized between internal phloem-associated parenchyma (IPAP) and epidermis cells. Transporters for intercellular transport of proposed mobile pathway intermediates have remained elusive. Screening of an Arabidopsis thaliana transporter library expressed in Xenopus oocytes identified AtNPF2.9 as a putative iridoid glucoside importer. Eight orthologs were identified in Catharanthus roseus, of which three, CrNPF2...
September 1, 2017: Plant & Cell Physiology
https://www.readbyqxmd.com/read/28922653/is-willems-method-universal-for-age-estimation-a-systematic-review-and-meta-analysis
#2
REVIEW
Jian Wang, Fang Ji, Yue Zhai, Hyun Park, Jiang Tao
Dental age (DA) has been widely accepted as a way to evaluate chronological age (CA) in recent years. However, the applicability of Willems method, as one of the most popular radiographic ways, still remains controversial in different areas. The aim of this study is to assess the difference between DA and CA with Willems method. Relevant studies published up to February 28th, 2017 were selected via PubMed, Embase, the Cochrane Library, CNKI, CBM and manual search. Studies that examined Willems dental age and chronological age were selected...
September 12, 2017: Journal of Forensic and Legal Medicine
https://www.readbyqxmd.com/read/28922619/identification-of-angiogenesis-inhibitors-using-a-co-culture-cell-model-in-a-high-content-and-high-throughput-screening-platform
#3
Shuaizhang Li, Chia-Wen Hsu, Srilatha Sakamuru, Chaozhong Zou, Ruili Huang, Menghang Xia
Angiogenesis is an important hallmark of cancer, contributing to tumor formation and metastasis. In vitro angiogenesis models for analyzing tube formation serve as useful tools to study these processes. However, current in vitro co-culture models using primary cells have limitations in usefulness and consistency. Therefore, in the present study, an in vitro co-culture assay system was optimized in a 1536-well format for high-throughput screening using human telomerase reverse transcriptase (hTERT)-immortalized mesenchymal stem cells and aortic endothelial cells...
September 1, 2017: SLAS Technology
https://www.readbyqxmd.com/read/28922607/antdas-automatic-data-analysis-strategy-for-uplc-qtof-based-nontargeted-metabolic-profiling-analysis
#4
Hai-Yan Fu, Xiao-Ming Guo, Yue-Ming Zhang, Jing-Jing Song, Qing-Xia Zheng, Ping-Ping Liu, Peng Lu, Qian-Si Chen, Yong-Jie Yu, Yuanbin She
High-quality data analysis methodology remains a bottleneck for metabolic profiling analysis based on ultra-performance liquid chromatography-quadrupole time-of-flight mass spectrometry. The present work aims to address this problem by proposing a novel data analysis strategy wherein (1) chromatographic peaks in the UPLC-QTOF dataset are automatically extracted by using an advanced multiscale Gaussian smoothing-based peak extraction strategy. (2) A peak annotation stage is used to cluster fragment ions that belong to the same compound...
September 18, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28922568/spectral-libraries-for-swath-ms-assays-for-drosophila-melanogaster-and-solanum-lycopersicum
#5
Bertrand Fabre, Dagmara Korona, Clara I Mata-Martinez, Harriet T Parsons, Michael J Deery, Maarten L A T M Hertog, Bart M Nicolaï, Steven Russell, Kathryn S Lilley
Quantitative proteomics methods have emerged as powerful tools for measuring protein expression changes at the proteome level. Using mass-spectrometry (MS) based approaches, it is now possible to routinely quantify thousands of proteins. However, pre-fractionation of the samples at the protein or peptide level is usually necessary to go deep into the proteome, increasing both MS analysis time and technical variability. Recently, a new MS acquisition method named SWATH was introduced with the potential to provide good coverage of the proteome as well as a good measurement precision without prior sample fractionation...
September 18, 2017: Proteomics
https://www.readbyqxmd.com/read/28922553/programmable-nucleic-acid-based-polygons-with-controlled-neuroimmunomodulatory-properties-for-predictive-qsar-modeling
#6
Morgan Brittany Johnson, Justin R Halman, Emily Satterwhite, Alexey V Zakharov, My N Bui, Kheiria Benkato, Victoria Goldsworthy, Taejin Kim, Enping Hong, Marina A Dobrovolskaia, Emil F Khisamutdinov, Ian Marriott, Kirill A Afonin
In the past few years, the study of therapeutic RNA nanotechnology has expanded tremendously to encompass a large group of interdisciplinary sciences. It is now evident that rationally designed programmable RNA nanostructures offer unique advantages in addressing contemporary therapeutic challenges such as distinguishing target cell types and ameliorating disease. However, to maximize the therapeutic benefit of these nanostructures, it is essential to understand the immunostimulatory aptitude of such tools and identify potential complications...
September 18, 2017: Small
https://www.readbyqxmd.com/read/28922416/multi-level-computational-methods-for-interdisciplinary-research-in-the-hathitrust-digital-library
#7
Jaimie Murdock, Colin Allen, Katy Börner, Robert Light, Simon McAlister, Andrew Ravenscroft, Robert Rose, Doori Rose, Jun Otsuka, David Bourget, John Lawrence, Chris Reed
We show how faceted search using a combination of traditional classification systems and mixed-membership topic models can go beyond keyword search to inform resource discovery, hypothesis formulation, and argument extraction for interdisciplinary research. Our test domain is the history and philosophy of scientific work on animal mind and cognition. The methods can be generalized to other research areas and ultimately support a system for semi-automatic identification of argument structures. We provide a case study for the application of the methods to the problem of identifying and extracting arguments about anthropomorphism during a critical period in the development of comparative psychology...
2017: PloS One
https://www.readbyqxmd.com/read/28921966/tool-for-rapid-analysis-of-glycopeptide-by-permethylation-trap-via-one-pot-site-mapping-and-glycan-analysis
#8
Asif Shajahan, Nitin Tatyaso Supekar, Christian Heiss, Mayumi Ishihara, Parastoo Azadi
To overcome the challenges in the analysis of protein glycosylation, we have developed a comprehensive and universal tool through permethylation of glycopeptides and their tandem mass spectrometric analysis. This method has the potential to simplify glycoprotein analysis by integrating glycan sequencing and glycopeptide analysis in a single experiment. Moreover, glycans with unique glycosidic linkages, particularly from prokaryotes, which are resistant to enzymatic or chemical release, could also be detected and analyzed by this methodology...
September 18, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28921904/developing-a-dna-barcode-library-for-perciform-fishes-in-the-south-china-sea-species-identification-accuracy-and-cryptic-diversity
#9
Gang Hou, Wei-Tao Chen, Huo-Sheng Lu, Fei Cheng, Song-Guang Xie
DNA barcodes were studied for 1,353 specimens representing 272 morphological species belonging to 149 genera and 55 families of Perciformes from the South China Sea (SCS). The average Kimura 2-parameter (K2P) distances within species, genera, and families were 0.31%, 8.71%, and 14.52%, respectively. A Neighbor-joining (NJ) tree, Bayesian inference (BI) and maximum-likelihood (ML) trees and Automatic Barcode Gap Discovery (ABGD) revealed 260, 253 and 259 single-species-representing clusters, respectively. Barcoding Gap Analysis (BGA) demonstrated that barcode gaps were present for 178 of 187 species analysed with multiple specimens (95...
September 15, 2017: Molecular Ecology Resources
https://www.readbyqxmd.com/read/28921842/anchorquery-rapid-online-virtual-screening-for-small-molecule-protein-protein-interaction-inhibitors
#10
David R Koes, Alexander Dömling, Carlos J Camacho
AnchorQuery ( http://anchorquery.csb.pitt.edu) is a web application for rational structure-based design of protein-protein interaction (PPI) inhibitors. A specialized variant of pharmacophore search is used to rapidly screen libraries consisting of more than 31 million synthesizable compounds biased by design to preferentially target PPIs. Every library compound is accessible through one-step multi-component reaction (MCR) chemistry and contains an anchor motif that is bioisosteric to an amino acid residue...
September 16, 2017: Protein Science: a Publication of the Protein Society
https://www.readbyqxmd.com/read/28921837/coronary-artery-bypass-grafting-versus-percutaneous-coronary-intervention-in-patients-with-non-insulin-treated-type-2-diabetes-mellitus-a-meta-analysis-of-randomized-controlled-trials
#11
Yushu Wang, Meiqin Wen, Junteng Zhou, Yucheng Chen, Qing Zhang
INTRODUCTION: The outcomes and prognosis of revascularization by either coronary artery bypass grafting (CABG) surgery or percutaneous coronary intervention (PCI) in patients with non-insulin treated type 2 diabetes mellitus (NITDM) have not yet been well established. METHODS: Randomized controlled trials (RCTs) were identified by searching Pubmed, EMBASE and Cochrane library from inception until May 2016. Heterogeneity was evaluated and the pooled hazard ratio (HR) was calculated using a fixed-effect model...
September 15, 2017: Diabetes/metabolism Research and Reviews
https://www.readbyqxmd.com/read/28921802/environmental-dna-metabarcoding-transforming-how-we-survey-animal-and-plant-communities
#12
Kristy Deiner, Holly M Bik, Elvira Mächler, Mathew Seymour, Anaïs Lacoursière-Roussel, Florian Altermatt, Simon Creer, Iliana Bista, David M Lodge, Natasha de Vere, Michael E Pfrender, Louis Bernatchez
The genomic revolution has fundamentally changed how we survey biodiversity on earth. High-throughput sequencing ('HTS') platforms now enable the rapid sequencing of DNA from diverse kinds of environmental samples (termed 'environmental DNA' or 'eDNA'). Coupling HTS with our ability to associate sequences from eDNA with a taxonomic name is called 'eDNA metabarcoding' and offers a powerful molecular tool capable of non-invasively surveying species richness from many ecosystems. Here, we review the use of eDNA metabarcoding for surveying animal and plant richness, and the challenges in using eDNA approaches to estimate relative abundance...
September 16, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28921739/a-rapid-review-of-needs-assessment-tools-for-post-treatment-cancer-survivors
#13
REVIEW
M Jiao, A E Hall, L Nolte, A Piper, K Lisy, M Jefford
Relevant, comprehensive and psychometrically rigorous needs assessment tools are needed to ensure appropriate care is delivered to cancer survivors who have completed treatment. The aim of this rapid review was to identify and describe needs assessment tools that are used in cancer survivors post-treatment, assess their psychometric properties and describe their use in clinical care. The electronic databases Medline, Cochrane Library, CINAHL and PsycINFO were searched. Six studies were identified that described five needs assessment tools used in cancer survivors post-treatment...
September 18, 2017: European Journal of Cancer Care
https://www.readbyqxmd.com/read/28921612/systematic-review-and-meta-analysis-of-non-pharmacological-interventions-to-reduce-the-symptoms-of-mild-to-moderate-anxiety-in-pregnant-women
#14
REVIEW
Kerry Evans, C Jane Morrell, Helen Spiby
AIM: To assess the effectiveness of non-pharmacological interventions for pregnant women with symptoms of mild to moderate anxiety. BACKGROUND: Many pregnant women experience mild to moderate symptoms of anxiety and could benefit from additional support. Non-pharmacological interventions have been suggested for use during pregnancy. DESIGN: A systematic review of randomised controlled trials. DATA SOURCES: Randomised controlled trials published since 1990, identified from electronic databases: Medline; CINAHL; Maternity and Infant Care; PsycINFO; Cochrane Database of Systematic Reviews; CENTRAL; EMBASE; Centre for Reviews and Dissemination; Social Sciences Citation Index; ASSIA; HTA Library; Joanna Briggs Institute Evidence-Based Practice database; Allied and Complementary Medicine...
September 16, 2017: Journal of Advanced Nursing
https://www.readbyqxmd.com/read/28921549/%C3%AE-flucs-brighter-photinus-pyralis-firefly-luciferases-identified-by-surveying-consecutive-single-amino-acid-deletion-mutations-in-a-thermostable-variant
#15
Lisa M Halliwell, Amit P Jathoul, Jack P Bate, Harley L Worthy, James C Anderson, Dafydd D Jones, James A H Murray
The bright bioluminescence catalysed by Photinus pyralis firefly luciferase (Fluc) enables a vast array of life science research such as bioimaging in live animals and sensitive in vitro diagnostics. The effectiveness of such applications is improved using engineered enzymes that to date have been constructed using amino acid substitutions. We describe ΔFlucs: consecutive single amino acid deletion mutants within 6 loop structures of the bright and thermostable x11 Fluc. Deletion mutations are a promising avenue to explore new sequence and functional space and isolate novel mutant phenotypes...
September 16, 2017: Biotechnology and Bioengineering
https://www.readbyqxmd.com/read/28921161/deep-brain-stimulation-for-refractory-temporal-lobe-epilepsy-a-systematic-review-and-meta-analysis-with-an-emphasis-on-alleviation-of-seizure-frequency-outcome
#16
Bowen Chang, Jiwen Xu
OBJECTIVE: Conflicting conclusions have been reported regarding predictors of deep brain stimulation (DBS) outcome in patients with refractory temporal lobe epilepsy (TLE). The main goal of this meta-analysis study was to identify possible predictors of remarkable seizure reduction (RSR). METHODS: We conducted a comprehensive search of English-language literature published since 1990 and indexed in PubMed, Embase, and the Cochrane Library that addressed seizure outcomes in patients who underwent DBS for refractory TLE...
September 18, 2017: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/28921042/symptomatic-treatment-of-dyspnea-in-advanced-cancer-patients-a%C3%A2-narrative-review-of-the-current-literature
#17
REVIEW
Matthäus Strieder, Martin Pecherstorfer, Gudrun Kreye
BACKGROUND: Dyspnea is a common, very distressing symptom in advanced cancer patients that challenges them, their relatives, and healthcare professionals. This narrative review summarizes important literature dealing with the evidence for opioids, benzodiazepines, oxygen, and steroids for treating dyspnea in advanced cancer patients. METHODS: A selective literature search was undertaken in PubMed, Embase, and the Cochrane Library and extended with literature from the reference lists of included studies up to April 2016...
September 18, 2017: Wiener Medizinische Wochenschrift
https://www.readbyqxmd.com/read/28920562/comparison-of-general-and-local-anesthesia-for-deep-brain-stimulator-insertion-a-systematic-review
#18
Veena Sheshadri, Nathan C Rowland, Jigesh Mehta, Marina Englesakis, Pirjo Manninen, Lashmi Venkatraghavan
BACKGROUND: Subthalamic nucleus deep brain stimulation (STN-DBS) has become a standard treatment for many patients with Parkinson's disease (PD). The reported clinical outcome measures for procedures done under general anesthesia (GA) compared to traditional local anesthetic (LA) technique are quite heterogeneous and difficult to compare. The aim of this systematic review and metaanalysis was to determine whether the clinical outcome after STN-DBS insertion under GA is comparable to that under LA in patients with Parkinson's disease...
September 18, 2017: Canadian Journal of Neurological Sciences. le Journal Canadien des Sciences Neurologiques
https://www.readbyqxmd.com/read/28920174/features-and-effects-of-information-technology-based-interventions-to-improve-self-management-in-chronic-kidney-disease-patients-a-systematic-review-of-the-literature
#19
Fateme Rangraz Jeddi, Ehsan Nabovati, Shahrzad Amirazodi
Slowing down the progression of chronic kidney disease (CKD) and its adverse health outcomes requires the patient's self-management and attention to treatment recommendations. Information technology (IT)-based interventions are increasingly being used to support self-management in patients with chronic diseases such as CKD. We conducted a systematic review of randomized controlled trials (RCTs) to assess the features and effects of IT-based interventions on self-management outcomes of CKD patients. A comprehensive search was conducted in Medline, Scopus, and the Cochrane Library to identify relevant papers that were published until May 2016...
September 18, 2017: Journal of Medical Systems
https://www.readbyqxmd.com/read/28920153/optimizing-somatostatin-analog-use-in-well-or-moderately-differentiated-gastroenteropancreatic-neuroendocrine-tumors
#20
REVIEW
Alberto Carmona-Bayonas, Paula Jiménez-Fonseca, Ana Custodio, Enrique Grande, Jaume Capdevila, Carlos López, Alex Teule, Rocío Garcia-Carbonero
BACKGROUND: Somatostatin analogues, aiming to control tumor secretion or growth, constitute the most attractive therapeutic option for patients with well-differentiated gastroenteropancreatic neuroendocrine tumors (GEP-NETs). The objective of this article is to provide a comprehensive review of the current state-of-the-art knowledge gaps and potential opportunities for future development and optimization of this therapeutic modality. METHOD: A contextualized systematic review with a narrative component was conducted using PubMed, The Cochrane Library, EMBASE, and Google Scholar...
September 18, 2017: Current Oncology Reports
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