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https://www.readbyqxmd.com/read/27920298/malate-synthase-and-%C3%AE-methylmalyl-coa-lyase-reactions-in-the-methylaspartate-cycle-in-haloarcula-hispanica
#1
Farshad Borjian, Jing Han, Jing Hou, Hua Xiang, Jan Zarzycki, Ivan A Berg
: Haloarchaea are extremely halophilic heterotrophic microorganisms belonging to the class Halobacteria (Euryarchaeota). Almost half of the haloarchaea possesses the genes coding for enzymes of the methylaspartate cycle, a recently discovered anaplerotic acetate assimilation pathway. In this cycle, the enzymes of the tricarboxylic acid cycle together with the dedicated enzymes of the methylaspartate cycle convert two acetyl-CoA molecules to malate. The methylaspartate cycle involves two reactions catalyzed by homologous enzymes belonging to the CitE-like enzyme superfamily, the malyl-CoA lyase/thioesterase (haloarchaeal malate synthase, hMS, Hah_2476 in Haloarcula hispanica) and the β-methylmalyl-CoA lyase (hMCL, Hah_1341)...
December 5, 2016: Journal of Bacteriology
https://www.readbyqxmd.com/read/27918474/hazard-management-dealt-by-safety-professionals-in-colleges-the-impact-of-individual-factors
#2
Tsung-Chih Wu, Chi-Hsiang Chen, Nai-Wen Yi, Pei-Chen Lu, Shan-Chi Yu, Chien-Peng Wang
Identifying, evaluating, and controlling workplace hazards are important functions of safety professionals (SPs). The purpose of this study was to investigate the content and frequency of hazard management dealt by safety professionals in colleges. The authors also explored the effects of organizational factors/individual factors on SPs' perception of frequency of hazard management. The researchers conducted survey research to achieve the objective of this study. The researchers mailed questionnaires to 200 SPs in colleges after simple random sampling, then received a total of 144 valid responses (response rate = 72%)...
December 3, 2016: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/27914349/effects-of-clay-minerals-hydroxides-and-timing-of-dissolved-organic-matter-addition-on-the-competitive-sorption-of-copper-nickel-and-zinc-a-column-experiment
#3
Yasser Refaey, Boris Jansen, John R Parsons, Pim de Voogt, Simone Bagnis, Adriaan Markus, Abdel-Hamid El-Shater, Abdel-Aziz El-Haddad, Karsten Kalbitz
Infiltration of heavy metal (HM) polluted wastewater can seriously compromise soil and groundwater quality. Interactions between mineral soil components (e.g. clay minerals) and dissolved organic matter (DOM) play a crucial role in determining HM mobility in soils. In this study, the influence of the timing of addition of DOM, i.e. concurrent with or prior to HMs, on HM mobility was explored in a set of continuous flow column experiments using well defined natural soil samples amended with goethite, birnessite and/or smectite...
November 30, 2016: Journal of Environmental Management
https://www.readbyqxmd.com/read/27899973/expression-patterns-of-maspin-and-mutant-p53-are-associated-with-the-development-of-gestational-trophoblastic-neoplasia
#4
Pengming Sun, Qibin Wu, Guanyu Ruan, Xiu Zheng, Yiyi Song, Jianfan Zhun, Lixiang Wu, Walter H Gotlieb
Gestational trophoblastic disease (GTD) is a group of conditions that originate from the abnormal proliferation of trophoblastic cells. GTDs encompass hydatidiform moles (HMs) and gestational trophoblastic neoplasia (GTN). GTNs are a group of malignant diseases that require chemotherapy, or more aggressive treatment. There is a requirement for more tumor markers to predict the development of GTN from HMs. The current study evaluated the expression of maspin and tumor protein p53 (p53) in GTD, and their role in predicting the development of GTN...
November 2016: Oncology Letters
https://www.readbyqxmd.com/read/27899623/combining-transcription-factor-binding-affinities-with-open-chromatin-data-for-accurate-gene-expression-prediction
#5
Florian Schmidt, Nina Gasparoni, Gilles Gasparoni, Kathrin Gianmoena, Cristina Cadenas, Julia K Polansky, Peter Ebert, Karl Nordström, Matthias Barann, Anupam Sinha, Sebastian Fröhler, Jieyi Xiong, Azim Dehghani Amirabad, Fatemeh Behjati Ardakani, Barbara Hutter, Gideon Zipprich, Bärbel Felder, Jürgen Eils, Benedikt Brors, Wei Chen, Jan G Hengstler, Alf Hamann, Thomas Lengauer, Philip Rosenstiel, Jörn Walter, Marcel H Schulz
The binding and contribution of transcription factors (TF) to cell specific gene expression is often deduced from open-chromatin measurements to avoid costly TF ChIP-seq assays. Thus, it is important to develop computational methods for accurate TF binding prediction in open-chromatin regions (OCRs). Here, we report a novel segmentation-based method, TEPIC, to predict TF binding by combining sets of OCRs with position weight matrices. TEPIC can be applied to various open-chromatin data, e.g. DNaseI-seq and NOMe-seq...
November 29, 2016: Nucleic Acids Research
https://www.readbyqxmd.com/read/27884841/herbal-medicines-for-the-treatment-of-otitis-media-with-effusion-a-systematic-review-of-randomised-controlled-trials
#6
Mi Ju Son, Songie Choi, Young-Eun Kim, Yun Hee Kim
OBJECTIVES: This systematic review aimed to assess the clinical evidence supporting the use of herbal medicines (HMs) for the treatment of otitis media with effusion (OME). DESIGN: Systematic review and meta-analysis. DATA SOURCES: MEDLINE, EMBASE, Cochrane Library, AMED, CINAHL and three trial registries were searched up to January 2015. We also searched five Korean medical databases (KoreaMed, RISS, OASIS, DBPIA and KISS) and three Chinese databases (CNKI, Wanfang and VIP)...
November 24, 2016: BMJ Open
https://www.readbyqxmd.com/read/27882081/effects-of-different-sutures-on-fibrosis-and-wound-healing-in-a-rabbit-model-of-corneal-wounds
#7
Ying Li, Hui J Chen, Hua Zhang, Jian G Wu, Yun T Hu, Zhi Z Ma
The aim of the study was to investigate wound healing and scar formation in rabbit corneal lamellar wounds repaired with simple interrupted sutures (SIS) or horizontal mattress sutures (HMS). Two parallel 'I'-shaped lamellar cornea wounds were created in one eye of 40 white New Zealand rabbits, while 5 uninjured rabbits were sacrificed to serve as normal controls. One side of the wounds, in the test rabbits, was closed with SIS, while the other side was treated with HMS. Ten days later, the stitches were removed under anesthesia...
November 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/27875717/comparative-study-on-the-mobility-and-speciation-of-heavy-metals-in-ashes-from-co-combustion-of-sewage-sludge-dredged-sludge-and-rice-husk
#8
Teng Wang, Yongjie Xue, Min Zhou, Yunjuan Yuan, Suyun Zhao, Gang Tan, Xian Zhou, Junjun Geng, Shaopeng Wu, Haobo Hou
The co-combustion of sludge (sewage and dredged sludge) with rice husk is expected to become a trend because of its economic and environmental benefits. However, the massive residues from the co-combustion process and the mobility of heavy metals (HMs) warrant special attention. The basic performance and environmental properties of the trace elements (Cr, Cu, Fe, Mn, Ba and Zn) from the co-combustion ashes were studied to promote the further utilization of these materials. These ashes have a shell particle shape, high specific area, high amorphous content and low crystalline phase content...
November 19, 2016: Chemosphere
https://www.readbyqxmd.com/read/27872592/a-pyrazolo-3-4-d-pyrimidine-compound-reduces-cell-viability-and-induces-apoptosis-in-different-hematological-malignancies
#9
Ilaria Laurenzana, Antonella Caivano, Francesco La Rocca, Stefania Trino, Luciana De Luca, Francesca D'Alessio, Silvia Schenone, Geppino Falco, Maurizio Botta, Luigi Del Vecchio, Pellegrino Musto
Molecular targeted therapies are based upon drugs acting on tumors by interfering with specific targets involved in growth and spread of cancer. Many targeted therapies were approved by Food and Drug Administration as standard treatment, others were introduced into preclinical or clinical studies on hematological malignancies (HMs). The development of drug-resistance in some HMs and the lack of effective treatments in other ones emphasized the need for searching new molecular targets and therapeutic agents...
2016: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/27870916/quantitative-trait-locus-analysis-of-late-leaf-spot-resistance-and-plant-type-related-traits-in-cultivated-peanut-arachis-hypogaea-l-under-multi-environments
#10
Xiaojing Zhou, Youlin Xia, Junhua Liao, Kede Liu, Qiang Li, Yang Dong, Xiaoping Ren, Yuning Chen, Li Huang, Boshou Liao, Yong Lei, Liying Yan, Huifang Jiang
Late leaf spot (LLS) is one of the most serious foliar diseases affecting peanut worldwide leading to huge yield loss. To understand the genetic basis of LLS and assist breeding in the future, we conducted quantitative trait locus (QTL) analysis for LLS and three plant-type-related traits including height of main stem (HMS), length of the longest branch (LLB) and total number of branches (TNB). Significant negative correlations were observed between LLS and the plant-type-related traits in multi-environments of a RIL population from the cross Zhonghua 5 and ICGV 86699...
2016: PloS One
https://www.readbyqxmd.com/read/27863030/integration-of-multiple-analytical-and-computational-tools-for-the-discovery-of-high-potency-enzyme-inhibitors-from-herbal-medicines
#11
Hui-Peng Song, Hong Wang, Jin-Xiu Liang, Cheng Qian, Si-Qi Wu, Wen-Jun Xu, Bin Wu, Xin-Guang Liu, Ping Li, Hua Yang
Herbal medicines (HMs) are an important source of drugs. In this study, an efficient strategy integrating ultrafiltration LC-MS, microplate bioassays, and molecular docking was proposed to screen high-potency enzyme inhibitors from HMs. Using this strategy, the structure-activity relationships (SARs) including binding-affinity-based SAR, enzymatic-activity-based SAR, and structural-complementarity-based SAR of compounds in an HM can be analyzed to provide abundant information for drug discovery. A prominent advantage of the approach is that it offers a multidimensional perspective to understand enzyme-ligand interactions, which could help to avoid false-positive screening results brought by a single method...
December 6, 2016: ChemMedChem
https://www.readbyqxmd.com/read/27852447/a-polyclonal-outbreak-of-bloodstream-infections-by-enterococcus-faecium-in-patients-with-hematologic-malignancies
#12
Pamela Alatorre-Fernández, Claudia Mayoral-Terán, Consuelo Velázquez-Acosta, Cecilia Franco-Rodríguez, Karen Flores-Moreno, Miguel Ángel Cevallos, Yolanda López-Vidal, Patricia Volkow-Fernández
BACKGROUND: Enterococcus faecium causes bloodstream infection (BSI) in patients with hematologic malignancies (HMs). We studied the clinical features and outcomes of patients with HM with vancomycin-sensitive E faecium (VSE) and vancomycin-resistant E faecium (VRE) BSI and determined the genetic relatedness of isolates and circumstances associated with the upsurge of E faecium BSI. METHODS: Case-control study of patients with HM and E faecium-positive blood culture from January 2008-December 2012; cases were patients with VRE and controls were VSE isolates...
November 14, 2016: American Journal of Infection Control
https://www.readbyqxmd.com/read/27848905/-splenomegaly-in-an-eritrean-refugee-the-hyper-reactive-malaria-splenomegaly-syndrome
#13
M M Cruijsen, I J Reuling, M Keuter, R W Sauerwein, A J van der Ven, Q de Mast
BACKGROUND: Hyper-reactive malaria splenomegaly (HMS) is a rare and potentially severe complication of malaria. It is likely that the incidence of patients with HMS will rise in the Netherlands due to the recent increase in asylum-seekers from Sub-Saharan Africa. It can be difficult to diagnose this disease, as this case shows. CASE DESCRIPTION: A 31-year-old male from Eritrea was admitted with fever and dyspnea, caused by an influenza A-infection. The patient also presented with cachexia, pronounced hepatosplenomegaly and pancytopenia...
2016: Nederlands Tijdschrift Voor Geneeskunde
https://www.readbyqxmd.com/read/27799436/raman-spectroscopic-analysis-of-archaeological-specimens-from-the-wreck-of-hms-swift-1770
#14
Howell G M Edwards, Dolores Elkin, Marta S Maier
Specimens from underwater archaeological excavations have rarely been analysed by Raman spectroscopy probably due to the problems associated with the presence of water and the use of alternative techniques. The discovery of the remains of the Royal Navy warship HMS Swift off the coast of Patagonia, South America, which was wrecked in 1770 while undertaking a survey from its base in the Falkland/Malvinas Islands, has afforded the opportunity for a first-pass Raman spectroscopic study of the contents of several glass jars from a wooden chest, some of which had suffered deterioration of their contents owing to leakage through their stoppers...
December 13, 2016: Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences
https://www.readbyqxmd.com/read/27799283/the-heavy-metal-paradox-in-arbuscular-mycorrhizas-from-mechanisms-to-biotechnological-applications
#15
REVIEW
Nuria Ferrol, Elisabeth Tamayo, Paola Vargas
Arbuscular mycorrhizal symbioses that involve most plants and Glomeromycota fungi are integral and functional parts of plant roots. In these associations, the fungi not only colonize the root cortex but also maintain an extensive network of hyphae that extend out of the root into the surrounding environment. These external hyphae contribute to plant uptake of low mobility nutrients, such as P, Zn, and Cu. Besides improving plant mineral nutrition, arbuscular mycorrhizal fungi (AMF) can alleviate heavy metal (HM) toxicity to their host plants...
October 31, 2016: Journal of Experimental Botany
https://www.readbyqxmd.com/read/27798807/pollution-characteristics-source-apportionment-and-health-risk-of-heavy-metals-in-street-dust-of-suzhou-china
#16
Manli Lin, Herong Gui, Yao Wang, Weihua Peng
To analyze the pollution characteristics, source apportionment, and health risk of heavy metals (HMs) in street dust of Suzhou, China, 23 sampling sites were selected and periodically sampled for 12 months. A total of 276 samples were collected, and the concentrations of selected HMs (e.g., Cr, Cu, Fe, Mn, Pb, V, and Zn) were examined with an X-ray fluorescence spectrum analyzer. Results showed that the mean concentrations of Cr, Cu, Fe, Mn, Pb, V, and Zn in the street dust of Suzhou were 112.9, 27.5, 19941...
October 31, 2016: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/27784580/the-paradox-of-expert-judgment-in-rivers-ecological-monitoring
#17
M J Feio, A R Calapez, C L Elias, R M V Cortes, M A S Graça, P Pinto, S F P Almeida
A great investment has been done in the last decades in the development of numerical and qualitative assessment methods to classify the ecological quality of water bodies. Yet, in spite of all attempts to avoid subjectivity, expert judgment is still used at numerous steps of the ecological classification and is considered by some authors as indispensible for management purposes. Thus, the aim of this study is to test the hypothesis that expert judgment, when done by the adequate experts (limnologists/river ecologist) with experience in the study area (i...
October 23, 2016: Journal of Environmental Management
https://www.readbyqxmd.com/read/27779619/a-database-of-human-exposomes-and-phenomes-from-the-us-national-health-and-nutrition-examination-survey
#18
Chirag J Patel, Nam Pho, Michael McDuffie, Jeremy Easton-Marks, Cartik Kothari, Isaac S Kohane, Paul Avillach
The National Health and Nutrition Examination Survey (NHANES) is a population survey implemented by the Centers for Disease Control and Prevention (CDC) to monitor the health of the United States whose data is publicly available in hundreds of files. This Data Descriptor describes a single unified and universally accessible data file, merging across 255 separate files and stitching data across 4 surveys, encompassing 41,474 individuals and 1,191 variables. The variables consist of phenotype and environmental exposure information on each individual, specifically (1) demographic information, physical exam results (e...
October 25, 2016: Scientific Data
https://www.readbyqxmd.com/read/27769641/inorganic-carbon-dominates-total-dissolved-carbon-concentrations-and-fluxes-in-british-rivers-application-of-the-thincarb-model-thermodynamic-modelling-of-inorganic-carbon-in-freshwaters
#19
Helen P Jarvie, Stephen M King, Colin Neal
River water-quality studies rarely measure dissolved inorganic carbon (DIC) routinely, and there is a gap in our knowledge of the contributions of DIC to aquatic carbon fluxes and cycling processes. Here, we present the THINCARB model (THermodynamic modelling of INorganic CARBon), which uses widely-measured determinands (pH, alkalinity and temperature) to calculate DIC concentrations, speciation (bicarbonate, HCO3(-); carbonate, CO3(2-); and dissolved carbon dioxide, H2CO3(⁎)) and excess partial pressures of carbon dioxide (EpCO2) in freshwaters...
October 18, 2016: Science of the Total Environment
https://www.readbyqxmd.com/read/27762256/occupational-noise-exposure-on-a-royal-navy-warship-during-weapon-fire
#20
Gurmail Singh Paddan
INTRODUCTION: Measurements were made of the sound pressure levels on a military ship HMS Grimsby during firing of a Heavy Machine Gun (HMG) mounted on the starboard bridge wing. The measurement positions comprised three locations on the ship's bridge (the wheelhouse) and one location on the starboard bridge wing. Equipment and Procedure: The three locations on the bridge were the starboard door, centre and port door. A total of 255 burst firings were measured during the survey comprising 850 rounds with each burst encompassing from 1 to 10 rounds...
September 2016: Noise & Health
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