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https://www.readbyqxmd.com/read/29145089/arsenic-removal-from-as-hyperaccumulator-pteris-vittata-biomass-coupling-extraction-with-precipitation
#1
Evandro B da Silva, Letuzia M de Oliveira, Ann C Wilkie, Yungen Liu, Lena Q Ma
Proper disposal of As-hyperaccumulator Pteris vittata biomass (Chinese brake fern) enhances its application in phytoremediation. The goal of this study was to optimize As removal from P. vittata (PV) biomass by testing different particle sizes, extractants, extraction times and solid-to-liquid ratios. PV biomass was extracted using different extractants followed by different Mg-salts to recover soluble As via precipitation. Water-soluble As in PV biomass varied from 6.8% to 61% of total As depending on extraction time, with 99% of As being arsenate (AsV)...
October 27, 2017: Chemosphere
https://www.readbyqxmd.com/read/29140136/salt-glycerol-induced-hyperhydration-enhances-fluid-retention-more-than-salt-or-glycerol-induced-hyperhydration
#2
Eric D B Goulet, Adrien De La Flore, Félix A Savoie, Jonathan Gosselin
Hyperhydration has been demonstrated to improve work capacity and cardiovascular and thermoregulatory functions, enhance orthostatic tolerance, slow or neutralize bone demineralization and decrease post-dive bubble formation. Adding sodium or glycerol to a hyperhydration solution optimizes fluid retention. Sodium and glycerol produce their effect through different physiological mechanisms. If combined into a hyperhydration solution their impact on fluid retention could potentially be greater than their singular effect...
November 15, 2017: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/29138096/one-single-salt-bridge-explains-the-different-cytolytic-activities-shown-by-actinoporins-sticholysin-i-and-ii-from-the-venom-of-stichodactyla-helianthus
#3
Esperanza Rivera-de-Torre, Juan Palacios-Ortega, Sara García-Linares, José G Gavilanes, Álvaro Martínez-Del-Pozo
Sticholysins I and II (StnI and StnII), α-pore forming toxins from the sea anemone Stichodactyla helianthus, are water-soluble toxic proteins which upon interaction with lipid membranes of specific composition bind to the bilayer, extend and insert their N-terminal α-helix, and become oligomeric integral membrane structures. The result is a pore that leads to cell death by osmotic shock. StnI and StnII show 93% of sequence identity, but also different membrane pore-forming activities. The hydrophobicity profile along the first 18 residues revealed differences which were canceled by substituting StnI amino acids 2 and 9...
November 11, 2017: Archives of Biochemistry and Biophysics
https://www.readbyqxmd.com/read/29137143/evaluation-of-a-mass-media-campaign-to-increase-the-awareness-of-the-need-to-reduce-discretionary-salt-use-in-the-south-african-population
#4
Edelweiss Wentzel-Viljoen, Krisela Steyn, Carl Lombard, Anniza De Villiers, Karen Charlton, Sabine Frielinghaus, Christelle Crickmore, Vash Mungal-Singh
The South African strategic plan to reduce cardiovascular disease (CVD) includes reducing population salt intake to less than 5 g/day. A mass media campaign was undertaken to increase public awareness of the association between high salt intake, blood pressure and CVD, and focused on the reduction of discretionary salt intake. Community based surveys, before and after the campaign, were conducted in a cohort of black women aged 18-55 years. Questions on knowledge, attitudes and beliefs regarding salt use were asked...
November 12, 2017: Nutrients
https://www.readbyqxmd.com/read/29134404/curcumin-mediated-anti-microbial-photodynamic-therapy-against-candida-dubliniensis-biofilms
#5
Paula Volpato Sanitá, Ana Cláudia Pavarina, Lívia Nordi Dovigo, Ana Paula Dias Ribeiro, Mariana Carvalho Andrade, Ewerton Garcia de Oliveira Mima
The purpose of this study was to evaluate the effectiveness of anti-microbial photodynamic therapy (aPDT) mediated by curcumin (Cur) associated with LED light against biofilms of Candida dubliniensis, and further, investigate cellular uptake and drug penetration through the biofilms under confocal laser scanning microscopy (CLSM). Four C. dubliniensis strains were tested: three clinical isolates from HIV-positive patients and one reference strain (CBS 7987). Biofilms were treated with three Cur concentrations (20...
November 13, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/29127908/development-and-validation-of-a-stability-indicating-hplc-uv-method-for-the-determination-of-triamcinolone-acetonide-and-its-degradation-products-in-an-ointment-formulation
#6
A J P van Heugten, W de Boer, W S de Vries, C M A Markesteijn, H Vromans
A stability indicating high performance liquid chromatography method has been developed for the determination of triamcinolone acetonide (TCA) and its main degradation products in ointment formulations. The method, based on extensive stress testing using metal salts, azobisisobutyronitrile, acid, base and peroxide, showed that TCA undergoes oxidative degradation. All degradation products were identified using HPLC mass spectrometry. Separation and quantification was achieved using an Altima C18 RP18 HP column (250×4...
November 7, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/29127253/first-biochemical-and-crystallographic-characterization-of-a-fast-performing-ferritin-from-a-marine-invertebrate
#7
E De Meulenaere, J B Bailey, F A Tezcan, D D Deheyn
Ferritin, a multimeric cage-like enzyme, is integral to iron metabolism across all phyla through the sequestration and storage of iron through efficient ferroxidase activity. While ferritin sequences from around 900 species have been identified, crystal structures from only 50 species have been reported, the majority from bacterial origin. We recently isolated a secreted ferritin from the marine invertebrate Chaetopterus sp. (parchment tubeworm), which resides in muddy coastal seafloors. Here, we present the first ferritin from a marine invertebrate to be crystallized, and its biochemical characterization...
November 10, 2017: Biochemical Journal
https://www.readbyqxmd.com/read/29125547/salt-assisted-ultrasonicated-de-aggregation-and-advanced-redox-electrochemistry-of-detonation-nanodiamond
#8
Sanju Gupta, Brendan Evans, Alex Henson, Sara B Carrizosa
Nanodiamond particles form agglomerates in the dry powder state and this poses limitation to the accessibility of their diamond-like core thus dramatically impacting their technological advancement. In this work, we report de-agglomeration of nanodiamond (ND) by using a facile technique namely, salt-assisted ultrasonic de-agglomeration (SAUD). Utilizing ultrasound energy and ionic salts (sodium chloride and sodium acetate), SAUD is expected to break apart thermally treated nanodiamond aggregates (~50-100 nm) and produce an aqueous slurry of de-aggregated stable colloidal nanodiamond dispersions by virtue of ionic interactions and electrostatic stabilization...
November 10, 2017: Materials
https://www.readbyqxmd.com/read/29124776/field-findings-about-milk-ethanol-stability-a-first-report-of-interrelationship-between-%C3%AE-lactalbumin-and-lactose
#9
Rafael Fagnani, João Paulo Andrade de Araújo, Bruno Garcia Botaro
BACKGROUND: Milk ethanol stability is not only associated with microbiological acidification, but a phenomenon with many variables that influence the balance of soluble salts, mainly the calcium ion activity. On this basis, we wanted to find out more information about milk ethanol stability by studying its relationship with milk's proteins fractions and others major components. The influence of milk composition over the ethanol stability was assessed through a predictive model comprising 180 individual raw milk samples...
November 10, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/29124326/impact-of-two-arbuscular-mycorrhizal-fungi-on-arundo-donax-l-response-to-salt-stress
#10
Susanna Pollastri, Andreas Savvides, Massimo Pesando, Erica Lumini, Maria Grazia Volpe, Elif Aylin Ozudogru, Antonella Faccio, Fausta De Cunzo, Marco Michelozzi, Maurizio Lambardi, Vasileios Fotopoulos, Francesco Loreto, Mauro Centritto, Raffaella Balestrini
AM symbiosis did not strongly affect Arundo donax performances under salt stress, although differences in the plants inoculated with two different fungi were recorded. The mechanisms at the basis of the improved tolerance to abiotic stresses by arbuscular mycorrhizal (AM) fungi have been investigated mainly focusing on food crops. In this work, the potential impact of AM symbiosis on the performance of a bioenergy crop, Arundo donax, under saline conditions was considered. Specifically, we tried to understand whether AM symbiosis helps this fast-growing plant, often widespread in marginal soils, withstand salt...
November 9, 2017: Planta
https://www.readbyqxmd.com/read/29121599/polyaniline-pani-an-innovative-support-for-sampling-and-removal-of-vocs-in-air-matrices
#11
Cristina Della Pina, Maria Antonietta De Gregorio, Laura Clerici, Pierluisa Dellavedova, Ermelinda Falletta
Polyaniline (PANI)-based materials for both removal and sampling of volatile organic compounds (VOCs) from air by rapid adsorption/desorption processes have been developed. The polymer was synthesized in form of emeraldine as both salt and base using different synthetic approaches, a traditional one and a "green" one. VOCs adsorption/desorption efficiency was evaluated for all the materials analyzing the desorbed VOCs fractions by GC/MS technique and obtaining results similar to the presently adopted method employing commercial activated carbon...
October 12, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/29120719/supercritical-impregnation-and-optical-characterization-of-loaded-foldable-intraocular-lenses-using-supercritical-fluids
#12
Abir Bouledjouidja, Yasmine Masmoudi, Yanfeng Li, Wei He, Elisabeth Badens
PURPOSE: To prepare drug-loaded intraocular lenses (IOLs) used to combine cataract surgery with postoperative complication treatment through supercritical impregnation while preserving their optical properties. SETTING: Aix-Marseille Université, CNRS, Centrale Marseille, Laboratoire de Mécanique, Modélisation & Procédés Propres, Marseille, France, and He University Eye Hospital, Liaoning Province, China. DESIGN: Experimental study. METHODS: Supercritical impregnations of commercial foldable IOLs used in cataract surgery with ciprofloxacin (an antibiotic) and dexamethasone 21-phosphate disodium salt (an antiinflammatory drug) were performed in a noncontinuous mode...
October 2017: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/29118775/accumulation-profiles-of-embryonic-salt-soluble-proteins-in-maize-hybrids-and-parental-lines-indicate-matroclinous-inheritance-a-proteomic-analysis
#13
Fen Ning, Xiaolin Wu, Hang Zhang, Zhaokun Wu, Liangjie Niu, Hao Yang, Wei Wang
Maize is one of the most widely cultivated crops. It accumulates a large quantity of seed storage proteins, which are important for seed development and germination, and contribute to the nutritional quality of seeds. Based on solubility, the storage proteins are divided into albumins (water-soluble), globulins (salt-soluble), prolamins (alcohol-soluble), and glutelins (acid- or alkali-soluble). Maize hybrids are cultivated due to the superior performance of F1 hybrids than that of their parents, a phenomenon known as heterosis...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29114015/genetic-components-of-root-architecture-remodeling-in-response-to-salt-stress
#14
Magdalena Julkowska, Iko Tamar Koevoets, Selena Mol, Huub Cj Hoefsloot, Richard Feron, Mark Tester, Joost J B Keurentjes, Arthur Korte, Michel A Haring, Gert-Jan de Boer, Christa Testerink
Salinity of the soil is highly detrimental to plant growth. Plants respond by a redistribution of root mass between main and lateral roots, yet the genetic machinery underlying this process is still largely unknown. Here, we describe the natural variation among 347 Arabidopsis thaliana accessions in root system architecture (RSA) and identify the traits with highest natural variation in their response to salt. Salt-induced changes in RSA were associated with 100 genetic loci using genome-wide association studies (GWAS)...
November 7, 2017: Plant Cell
https://www.readbyqxmd.com/read/29112388/electrochemical-ammonia-recovery-from-source-separated-urine-for-microbial-protein-production
#15
Marlies E R Christiaens, Sylvia Gildemyn, Silvio Matassa, Tess Ysebaert, Jo De Vrieze, Korneel Rabaey
Conventional plant and meat protein production have low nitrogen usage efficiencies and high energy needs. Microbial protein (MP) is an alternative that offers higher nitrogen conversion efficiencies with low energy needs if nitrogen is recovered from a concentrated waste source such as source-separated urine. An electrochemical cell (EC) was optimized for ammonia recovery as NH3/H2 gas mixtures usable for MP production. Undiluted hydrolyzed urine was fed to the caustic-generating cathode compartment for ammonia stripping with redirection to the anode compartment for additional ammonium extraction...
November 7, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/29111679/recombinant-protein-polymers-for-colloidal-stabilization-and-improvement-of-cellular-uptake-of-diamond-nanosensors
#16
Tingting Zheng, Felipe Perona Martínez, Ingeborg Maria Storm, Wolf Rombouts, Joris Sprakel, Romana Schirhagl, Renko de Vries
Fluorescent nanodiamonds are gaining increasing attention as fluorescent labels in biology in view of the fact that they are essentially nontoxic, do not bleach, and can be used as nanoscale sensors for various physical and chemical properties. To fully realize the nanosensing potential of nanodiamonds in biological applications, two problems need to be addressed: their limited colloidal stability, especially in the presence of salts, and their limited ability to be taken up by cells. We show that the physical adsorption of a suitably designed recombinant polypeptide can address both the colloidal stability problem and the problem of the limited uptake of nanodiamonds by cells in a very straightforward way, while preserving both their spectroscopic properties and their excellent biocompatibility...
November 17, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/29111587/multifractal-approaches-of-the-ring-tensile-rupture-patterns-of-dried-laver-porphyra-as-affected-by-the-relative-humidity
#17
Hwabin Jung, Won Byong Yoon
The effect of water activity (aw ) or the relative humidity (RH) on the tensile rupture properties of dried laver (DL) associated with structures formed with phycocolloids was investigated. The morphological characteristics of tensile ruptured DL samples at various relative humidities were evaluated by multifractal analysis. The RH of the microclimate was controlled from 10% to 90% at 25 °C using supersaturated salt solutions. The sorption isotherm of DL was experimentally obtained and quantitatively analyzed using mathematical models...
November 7, 2017: Journal of Food Science
https://www.readbyqxmd.com/read/29104158/moderate-salt-restriction-with-or-without-paricalcitol-in-type-2-diabetes-and-losartan-resistant-macroalbuminuria-proceed-a-randomised-double-blind-placebo-controlled-crossover-trial
#18
Aneliya Parvanova, Matias Trillini, Manuel A Podestà, Ilian Petrov Iliev, Barbara Ruggiero, Manuela Abbate, Annalisa Perna, Francesco Peraro, Olimpia Diadei, Nadia Rubis, Flavio Gaspari, Fabiola Carrara, Nadia Stucchi, Antonio Belviso, Antonio C Bossi, Roberto Trevisan, Giuseppe Remuzzi, Martin de Borst, Piero Ruggenenti
BACKGROUND: Macroalbuminuria predicts renal and cardiovascular events in patients with type 2 diabetes. We aimed to assess the albuminuria-lowering effects of salt restriction, paricalcitol therapy, or both, in this population. METHODS: In this randomised, double-blind, placebo-controlled, crossover trial, we recruited adult patients with type 2 diabetes from six diabetology outpatient clinics in northern Italy, with 24 h albuminuria of more than 300 mg despite 100 mg per day losartan therapy, blood pressure of less than 140/90 mm Hg, serum creatinine concentration of less than 2 mg/dL, stable renal function on stable renin-angiotensin system inhibitor therapy with a fixed dose of losartan, parathyroid hormone concentration of 20 pg/mL to <110 pg/mL, serum calcium concentration of less than 9·5 mg/dL, and serum phosphate concentration of less than 5 mg/dL, who had been more than 80% compliant with placebo treatment during a 1 month placebo run-in...
November 2, 2017: Lancet Diabetes & Endocrinology
https://www.readbyqxmd.com/read/29100033/inflammation-is-regulated-by-the-adenosine-derivative-molecule-ifc-305-during-reversion-of-cirrhosis-in-a-ccl4-rat-model
#19
Rebeca Pérez-Cabeza de Vaca, Mariana Domínguez-López, Nuria Guerrero-Celis, Jesús R Rodríguez-Aguilera, Victoria Chagoya de Sánchez
Cirrhosis is a liver pathology originated by hepatocytes, Kupffer and hepatic stellate cells interactions and transformations. This pathology is associated with inflammation and fibrosis, originated by molecular signals secreted by immunological and parenchymal cells, such as cytokines and chemokines, like IL-1β, IL-6, TNF-α or MCP-1, driven by Kupffer cells signals. As part of inflammation resolution, the same activated Kupffer cells contribute to anti-inflammatory effects with IL-10 and MMP-9 secretion...
October 28, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/29099179/synthesis-and-biological-evaluation-of-ru-ii-and-pt-ii-complexes-bearing-carboxyl-groups-as-potential-anticancer-targeted-drugs
#20
Ma Ángeles Martínez, M Pilar Carranza, Anna Massaguer, Lucia Santos, Juan A Organero, Cristina Aliende, Rafael de Llorens, Iteng Ng-Choi, Lidia Feliu, Marta Planas, Ana M Rodríguez, Blanca R Manzano, Gustavo Espino, Félix A Jalón
The synthesis and characterization of Pt(II) (1 and 2) and Ru(II) arene (3 and 4) or polypyridine (5 and 6) complexes is described. With the aim of having a functional group to form bioconjugates, one uncoordinated carboxyl group has been introduced in all complexes. Some of the complexes were selected for their potential in photodynamic therapy (PDT). The molecular structures of complexes 2 and 5, as well as that of the sodium salt of the 4'-(4-carboxyphenyl)-2,2':6',2″-terpyridine ligand (cptpy), were determined by X-ray diffraction...
November 3, 2017: Inorganic Chemistry
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