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https://www.readbyqxmd.com/read/29323491/g-quadruplex-identification-in-the-genome-of-protozoan-parasites-points-to-naphthalene-diimide-ligands-as-new-antiparasitic-agents
#1
Efres Belmonte-Reche, Marta Martínez-García, Aurore Guédin, Michela Zuffo, Matilde Arévalo-Ruiz, Filippo Doria, Jenny Campos-Salinas, Marjorie Maynadier, Jose-Juan Lopez-Rubio, Mauro Freccero, Jean-Louis Mergny, Jose María Perez-Victoria, Juan Carlos Morales
G-quadruplexes (G4) are DNA secondary structures which take part in the regulation of gene expression. Putative G4 forming sequences (PQS) have been reported in mammals, yeast, bacteria and viruses. Here, we present PQS searches on the genomes of T. brucei, L. major and P. falciparum. We found telomeric sequences and new PQS motifs. Biophysical experiments showed that EBR1, a 29 nucleotide long highly repeated PQS in T. brucei, forms a stable G4 structure. G4 ligands based on carbohydrate conjugated naphthalene diimides (carb-NDIs) which bind G4's including hTel, could bind EBR1 with selectivity versus dsDNA...
January 11, 2018: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/29322938/mdd-carb-a-combinatorial-model-for-the-identification-of-protein-carbonylation-sites-with-substrate-motifs
#2
Hui-Ju Kao, Shun-Long Weng, Kai-Yao Huang, Fergie Joanda Kaunang, Justin Bo-Kai Hsu, Chien-Hsun Huang, Tzong-Yi Lee
BACKGROUND: Carbonylation, which takes place through oxidation of reactive oxygen species (ROS) on specific residues, is an irreversibly oxidative modification of proteins. It has been reported that the carbonylation is related to a number of metabolic or aging diseases including diabetes, chronic lung disease, Parkinson's disease, and Alzheimer's disease. Due to the lack of computational methods dedicated to exploring motif signatures of protein carbonylation sites, we were motivated to exploit an iterative statistical method to characterize and identify carbonylated sites with motif signatures...
December 21, 2017: BMC Systems Biology
https://www.readbyqxmd.com/read/29320401/mediterranean-diet-and-other-dietary-patterns-in-primary-prevention-of-heart-failure-and-changes-in-cardiac-function-markers-a-systematic-review
#3
REVIEW
Karina Sanches Machado d'Almeida, Stefanny Ronchi Spillere, Priccila Zuchinali, Gabriela Corrêa Souza
BACKGROUND: Heart failure (HF) is a complex syndrome and is recognized as the ultimate pathway of cardiovascular disease (CVD). Studies using nutritional strategies based on dietary patterns have proved to be effective for the prevention and treatment of CVD. Although there are studies that support the protective effect of these diets, their effects on the prevention of HF are not clear yet. METHODS: We searched the Medline, Embase, and Cochrane databases for studies that examined dietary patterns, such as dietary approaches to stop hypertension (DASH diet), paleolithic, vegetarian, low-carb and low-fat diets and prevention of HF...
January 10, 2018: Nutrients
https://www.readbyqxmd.com/read/29250417/crystal-structure-of-poly-di-%C3%AE-3-acetato-tetra-aqua-bis-%C3%AE-2-cyclo-hexane-1-4-di-carboxyl-ato-dilanth-an-um-iii-dihydrate
#4
R Drisya, U S Soumya Mol, P R Satheesh Chandran, M Sithambaresan, M R Sudarsankumar
The title compound, {[La2(CH3COO)2(C8H10O4)2(H2O)4]·2H2O} n or [La2(ac)2(e,a-cis-1,4-chdc)2(H2O)4]·2H2O, where ac is acetate and 1,4-chdc is cyclo-hexane-1,4-di-carboxyl-ate anion, is a binuclear lanthanum(III) complex. Each metal atom is deca-coordinated by four O atoms from two distinct 1,4-chdc2- ligands, four O atoms from three acetate groups and two O atoms from coordinated water mol-ecules to form a distorted bicapped square-anti-prismatic geometry. Two non-coordinated water mol-ecules are also present in the formula unit...
December 1, 2017: Acta Crystallographica. Section E, Crystallographic Communications
https://www.readbyqxmd.com/read/29250399/crystal-structures-of-two-1-2-dihydrate-compounds-of-chloranilic-acid-with-2-carb-oxy-pyridine-and-2-carb-oxy-quinoline
#5
Kazuma Gotoh, Hiroyuki Ishida
The crystal structure of the 1:2 dihydrate compound of chloranilic acid (systematic name: 2,5-di-chloro-3,6-dihy-droxy-1,4-benzo-quinone) with 2-carb-oxy-pyridine (another common name: picolinic acid; systematic name: pyridine-2-carb-oxy-lic acid), namely, 2C6H5.5NO20.5+·C6HCl2O4-·2H2O, (I), has been determined at 180 K, and the structure of the 1:2 dihydrate compound of chloranilic acid with 2-carb-oxy-quinoline (another common name: quinaldic acid; systematic name: quinoline-2-carb-oxy-lic acid), namely, 2C10H7NO2·C6H2Cl2O4·2H2O, (II), has been redetermined at 200 K...
December 1, 2017: Acta Crystallographica. Section E, Crystallographic Communications
https://www.readbyqxmd.com/read/29250350/a-copper-ii-paddle-wheel-structure-of-tranexamic-acid-di-chloro-tetra-kis-%C3%AE-4-ammonio-meth-yl-cyclo-hexane-1-carboxyl-ato-o-o-dicopper-ii-dichloride-hexa-hydrate
#6
Muhammad Altaf, Helen Stoeckli-Evans
Tranexamic acid [systematic name: trans-4-(amino-meth-yl)cyclo-hexane-1-carb-oxy-lic acid], is an anti-fibrinolytic amino acid that exists as a zwitterion [trans-4-(ammonio-meth-yl)cyclo-hexane-1-carboxyl-ate] in the solid state. Its reaction with copper chloride leads to the formation of a compound with a copper(II) paddle-wheel structure that crystallizes as a hexa-hydrate, [Cu2Cl2(C8H15NO2)4]2+·2Cl-·6H2O. The asymmetric unit is composed of a copper(II) cation, two zwitterionic tranexamic acid units, a coordinating Cl- anion and a free Cl- anion, together with three water mol-ecules of crystallization...
October 1, 2017: Acta Crystallographica. Section E, Crystallographic Communications
https://www.readbyqxmd.com/read/29244538/associations-between-dietary-patterns-and-longitudinal-quality-of-life-changes-in-colorectal-cancer-patients-the-colocare-study
#7
Biljana Gigic, Heiner Boeing, Reka Toth, Jürgen Böhm, Nina Habermann, Dominique Scherer, Petra Schrotz-King, Clare Abbenhardt-Martin, Stephanie Skender, Hermann Brenner, Jenny Chang-Claude, Michael Hoffmeister, Karen Syrjala, Paul B Jacobsen, Martin Schneider, Alexis Ulrich, Cornelia M Ulrich
Quality of life (QoL) is an important clinical outcome in cancer patients. We investigated associations between dietary patterns and QoL changes in colorectal cancer (CRC) patients. The study included 192 CRC patients with available EORTC QLQ-C30 data before and 12 months post-surgery and food frequency questionnaire data at 12 months post-surgery. Principal component analysis was used to identify dietary patterns. Multivariate regression models assessed associations between dietary patterns and QoL changes over time...
January 2018: Nutrition and Cancer
https://www.readbyqxmd.com/read/29196656/development-of-a-plasmid-free-crispr-cas9-system-for-the-genetic-modification-of-mucor-circinelloides
#8
Gábor Nagy, Csilla Szebenyi, Árpád Csernetics, Amanda Grace Vaz, Eszter Judit Tóth, Csaba Vágvölgyi, Tamás Papp
Mucor circinelloides and other members of Mucorales are filamentous fungi, widely used as model organisms in basic and applied studies. Although genetic manipulation methods have been described for some Mucoral fungi, construction of stable integrative transformants by homologous recombination has remained a great challenge in these organisms. In the present study, a plasmid free CRISPR-Cas9 system was firstly developed for the genetic modification of a Mucoral fungus. The described method offers a rapid but robust tool to obtain mitotically stable mutants of M...
December 1, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29174735/comparative-study-of-3-carbapenem-hydrolysis-methods-for-the-confirmation-of-carbapenemase-production-in-enterobacteriaceae
#9
Ohad Shalom, Amos Adler
The goals of the study were to examine the analytic and performance parameters of 2 commercial rapid carbapenem-hydrolysis assays, the β-CARBA test (Bio-Rad) and the Rapid CARB Blue Kit (ROSCO) in comparison with an in-house CARBA NP assay for the detection of Carbapenemase-Producing Enterobacteriaceae (CPE). Their performance was evaluated following growth on 2 chromogenic CPE screening media. The sensitivity was highest (91%) in the β-CARBA test when used from the mSuperCARBA™ plates and was lowest when the same test was used from the chromID™ CARBA plates (75%)...
October 19, 2017: Diagnostic Microbiology and Infectious Disease
https://www.readbyqxmd.com/read/29157271/comparison-of-neoadjuvant-chemoradiation-with-carboplatin-paclitaxel-or-cisplatin-5-fluoruracil-in-patients-with-squamous-cell-carcinoma-of-the-esophagus
#10
Stefan Münch, Steffi U Pigorsch, Marcus Feith, Julia Slotta-Huspenina, Wilko Weichert, Helmut Friess, Stephanie E Combs, Daniel Habermehl
PURPOSE: Neoadjuvant chemoradiation (nCRT) is the treatment of choice for patients with locally advanced squamous cell carcinoma of the esophagus (SCC). Today radiation oncologists can choose between two different therapy regimes including chemoradiation with cisplatin and 5-fluoruracil (CDDP/5FU) and chemoradiation analogue to the CROSS-regime with carboplatin and paclitaxel (Carb/TAX). However, there is a lack of studies comparing these regimes, especially for the subgroup of patients with SCC...
November 21, 2017: Radiation Oncology
https://www.readbyqxmd.com/read/29152372/synthesis-and-crystal-structure-of-a-two-dimensional-co-ii-coordination-polymer-poly-%C3%AE-3-3-carb-oxy-benzoato-%C3%AE-2-5-pyridin-4-yl-1h-2-h-3-3-bi-1-2-4-triazole-cobalt-ii
#11
Chao-Jun Du, Xiao-Na Zhao, Bao-Yong Chen
In the title compound, [Co(C8H5O4)(C9H6N7)] n , the divalent Co(II) atom is six-coordinated to three N atoms from two symmetrical 5-(pyridin-4-yl)-1H,2'H-3,3'-bi[1,2,4-triazole] (H2pyttz) ligands and three O atoms from three symmetrical 3-carb-oxy-benzoate (Hbdic) ligands, leading to a distorted {CoN3O3} octa-hedral coordination environment. Two Co(II) cations are linked by four bridging carboxyl-ate groups to generate a dinuclear [Co2(CO2)4] unit. The dinuclear units are further connected into a chain along [010] via the Hbdic ligands...
November 1, 2017: Acta Crystallographica. Section E, Crystallographic Communications
https://www.readbyqxmd.com/read/29152364/a-2-1-co-crystal-of-3-5-di-bromo-4-cyano-benzoic-acid-and-anthracene
#12
Wayland E Noland, Janel L Rieger, Zoe H Tu, Kenneth J Tritch
The title co-crystal, C8H3Br2NO2·0.5C14H10, was self-assembled from a 2:1 mixture of the components in slowly evaporating di-chloro-methane. The mol-ecules adopt a sheet structure parallel to (1-12) in which carb-oxy hydrogen-bonded dimers and anthracene mol-ecules stagger in both dimensions. Within the sheets, six individual cyano acid mol-ecules surround each anthracene mol-ecule. Cyano acid mol-ecules form one of the two possible R2(2)(10) rings between neighboring cyano and bromo groups. Compared to the di-chloro analog [Britton (2012 ▸)...
November 1, 2017: Acta Crystallographica. Section E, Crystallographic Communications
https://www.readbyqxmd.com/read/29138680/enhancement-of-antioxidant-mechanisms-and-reduction-of-oxidative-stress-in-chickens-after-the-administration-of-drinking-water-enriched-with-polyphenolic-powder-from-olive-mill-waste-waters
#13
Aliki Papadopoulou, Konstantinos Petrotos, Dimitrios Stagos, Konstantinos Gerasopoulos, Antonios Maimaris, Haralampos Makris, Ioannis Kafantaris, Sotiria Makri, Efthalia Kerasioti, Maria Halabalaki, Vincent Brieudes, Georgia Ntasi, Stylianos Kokkas, Pavlos Tzimas, Panagiotis Goulas, Alexander M Zakharenko, Kirill S Golokhvast, Aristidis Tsatsakis, Demetrios Kouretas
The aim of the study was to examine the effects of a polyphenolic powder from olive mill wastewater (OMWW) administered through drinking water, on chickens' redox status. Thus, 75 chickens were divided into three groups. Group A was given just drinking water, while groups B and C were given drinking water containing 20 and 50 μg/ml of polyphenols, respectively, for 45 days. The antioxidant effects of the polyphenolic powder were assessed by measuring oxidative stress biomarkers in blood after 25 and 45 days of treatment...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/29134727/a-srna-in-a-reduced-mutualistic-symbiont-genome-regulates-its-own-gene-expression
#14
Margaret W Thairu, Siyuan Cheng, Allison K Hansen
Similar to other nutritional endosymbionts that are obligate for host survival, the mutualistic aphid endosymbiont, Buchnera, has a highly reduced genome with few regulatory elements. Until recently, it was thought that aphid hosts were primarily responsible for regulating their symbiotic relationship. However, we recently revealed that Buchnera displays differential protein regulation, but not mRNA expression. We also identified a number of conserved small RNAs (sRNAs) that are expressed among Buchnera taxa...
November 13, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/29048822/-determination-of-pyrethroid-pesticides-in-tea-by-series-two-solid-phase-extraction-columns-cleanup-and-gas-chromatography-tandem-mass-spectrometry
#15
Li Liu, Qi Zhang, Haiyan Wang, Feng Feng, Hairong Cao, Zhen Yang, Zhijun Ke, Xiyao Chen
A rapid determination method of three pyrethroid pesticides (cyfluthrin, cypermethrin and fenvalerate) in tea was developed by series two-solid phase extraction-column cleanup and external standard method coupled with gas chromatography-tandem mass spectrometry (GC-MS/MS) in 30 min. The pesticide residues in tea were extracted with acetonitrile, and cleaned up by Carb/NH2 and SLH solid-phase extraction columns. After filtration, the target compounds were analyzed by GC-MS and quantified by the external standard method...
August 8, 2017: Se Pu, Chinese Journal of Chromatography
https://www.readbyqxmd.com/read/29019666/airborne-methane-emission-measurements-for-selected-oil-and-gas-facilities-across-california
#16
Shobhit Mehrotra, Ian Faloona, Maxime Suard, Stephen Conley, Marc L Fischer
We report 65 individual measurements of methane emissions from 24 oil and gas facilities across California. Methane emission rates were estimated using in situ methane and wind velocity measurements from a small aircraft by a novel Gauss' Theorem flux integral approach. The estimates are compared with annual mean emissions reported to the U.S. Environmental Protection Agency (USEPA) and the California Air Resources Board (CARB) through their respective greenhouse gas reporting programs. The average emissions from 36 measurements of 10 gas storage facilities were within a factor of 2 of emissions reported to USEPA or CARB, though large variance was observed and the reporting database did not contain all of the facilities...
November 7, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28978421/dietary-carbohydrates-impair-healthspan-and-promote-mortality
#17
Meenakshi Ravichandran, Gerald Grandl, Michael Ristow
The prospective cohort study, named PURE, found that in >135,000 participants from 18 countries, nutritive carbohydrates increase human mortality, whereas dietary fat reduces it, requesting a fundamental change of current nutritional guidelines. Experimental evidence from animal models provides synergizing mechanistic concepts as well as pharmacological options to mimic low-carb or ketogenic diets.
October 3, 2017: Cell Metabolism
https://www.readbyqxmd.com/read/28957355/an-augmented-reality-game-to-support-therapeutic-education-for-children-with-diabetes
#18
Andrés-Marcelo Calle-Bustos, M-Carmen Juan, Inmaculada García-García, Francisco Abad
Therapeutic education in diabetes helps patients take responsibility for self-control of their disease, and providing technological support systems facilitates this education. In this paper, we present an augmented reality game to support therapeutic education for patients with diabetes. Our game helps children (aged 5-14 years) to learn carbohydrate (carb) content of different foods. The game shows virtual foods on a real dish. The number of carb choices corresponding to the visualized food is also shown (1 carb choice = 10 grams of carbs)...
2017: PloS One
https://www.readbyqxmd.com/read/28932477/crystal-structure-of-n-2-cyclo-hexyl-sulfan-yl-eth-yl-quinolinic-acid-imide
#19
Hyunjin Park, Myong Yong Choi, Cheol Joo Moon, Tae Ho Kim
The title compound, C15H18N2O2S {systematic name: 6-[2-(cyclo-hexyl-sulfan-yl)eth-yl]-5H-pyrrolo-[3,4-b]pyridine-5,7(6H)-dione}, was obtained from the reaction of pyridine-2,3-di-carb-oxy-lic anhydride (synonym: quinolinic anhydride) with 2-(cyclo-hexyl-sulfan-yl)ethyl-amine. The dihedral angle between the mean plane of the cyclo-hexyl ring and the quinolinic acid imide ring is 25.43 (11)°. In the crystal, each mol-ecule forms two C-H⋯O hydrogen bonds and one weak C-O⋯π [O⋯ring centroid = 3.255 (2) Å] inter-action with neighbouring mol-ecules to generate a ladder structure along the b-axis direction...
September 1, 2017: Acta Crystallographica. Section E, Crystallographic Communications
https://www.readbyqxmd.com/read/28932476/crystal-structures-of-hibiscus-acid-and-hibiscus-acid-dimethyl-ester-isolated-from-hibiscus-sabdariffa-malvaceae
#20
Ahmed M Zheoat, Alexander I Gray, John O Igoli, Alan R Kennedy, Valerie A Ferro
The biologically active title compounds have been isolated from Hibiscus sabdariffa plants, hibiscus acid as a dimethyl sulfoxide monosolvate [systematic name: (2S,3R)-3-hy-droxy-5-oxo-2,3,4,5-tetra-hydro-furan-2,3-di-carb-oxy-lic acid dimethyl sulfoxide monosolvate], C6H6O7·C2H6OS, (I), and hibiscus acid dimethyl ester [systematic name: dimethyl (2S,3R)-3-hy-droxy-5-oxo-2,3,4,5-tetra-hydro-furan-2,3-di-carboxyl-ate], C8H10O7, (II). Compound (I) forms a layered structure with alternating layers of lactone and solvent mol-ecules, that include a two-dimensional hydrogen-bonding construct...
September 1, 2017: Acta Crystallographica. Section E, Crystallographic Communications
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