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https://www.readbyqxmd.com/read/28919366/prevalence-and-risk-factors-for-fragility-fracture-in-systemic-mastocytosis
#1
Yannick Degboé, Marine Eischen, Delphine Nigon, Pol-André Apoil, Claire Mailhol, Emilie Tournier, Camille Laurent, Katia Hanssens, Olivier Hermine, Carle Paul, Michel Laroche, Cristina Bulai-Livideanu
OBJECTIVES: Systemic mastocytosis (SM) is characterized by the accumulation of mast cells in tissues other than the skin. Bone involvement although frequent has not been thoroughly evaluated. Primary objective was to determine risk factors associated with fragility fractures (FF) in SM. Secondary objectives were to evaluate the ability of bone marrow tryptase (BMT) level to identify patients with FF, and to describe bone involvement in SM. METHODS: We analyzed retrospectively all consecutive patients seen in our expert center, with a diagnosis of SM according to the 2001 WHO criteria, and with complete bone assessment...
September 14, 2017: Bone
https://www.readbyqxmd.com/read/28916101/improved-analytical-techniques-of-sulfur-isotopic-composition-in-nanomole-quantities-by-mc-icp-ms
#2
Tsai-Luen Yu, Bo-Shian Wang, Chuan-Chou Shen, Pei-Ling Wang, Tsanyao Frank Yang, George S Burr, Yue-Gau Chen
We propose an improved method for precise sulfur isotopic measurements by multi-collector inductively coupled plasma mass spectrometry (MC-ICP-MS) in conjunction with a membrane desolvation nebulization system. The problems of sulfur loss through the membrane desolvation apparatus are carefully quantified and resolved. The method overcomes low intrinsic sulfur transmission through the instrument, which was initially 1% when operating at a desolvation temperature of 160 °C. Sulfur loss through the membrane desolvation apparatus was resolved by doping with sodium...
October 2, 2017: Analytica Chimica Acta
https://www.readbyqxmd.com/read/28904378/end-cretaceous-akagan%C3%A3-ite-as-a-mineral-marker-of-deccan-volcanism-in-the-sedimentary-record
#3
Eric Font, Julie Carlut, Céline Rémazeilles, Tamsin A Mather, Anne Nédélec, José Mirão, Sandra Casale
An enigmatic chloride-rich iron (oxyhydr)oxide has been recently identified together with mercury anomalies in End-Cretaceous marine sediments coeval with the Deccan Traps eruptions. The mineral was observed in Bidart (France) and Gubbio (Italy), suggesting a widespread phenomenon. However, the exact nature and origin of this Cl-bearing mineral remained speculative. Here, we characterized the accurate composition and nanostructure of this chloride-rich phase by using micro-Raman spectroscopy, Transmission (TEM) and Scanning (SEM) Electron Microscopy on Focused Ion Beam foils...
September 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28898860/direct-detection-of-the-triphenylpyrylium-derived-short-lived-intermediates-in-the-photocatalyzed-degradation-of-acetaminophen-acetamiprid-caffeine-and-carbamazepine
#4
R Martinez-Haya, J Gomis, A Arques, A M Amat, M A Miranda, M L Marin
Advanced oxidation processes are useful methodologies to accomplish abatement of contaminants; however, elucidation of the reaction mechanisms is hampered by the difficult detection of the short-lived primary key species involved in the photocatalytic processes. Nevertheless, herein the combined use of an organic photocatalyst such as triphenylpyrylium (TPP(+)) and photophysical techniques based on emission and absorption spectroscopy allowed monitoring the photocatalyst-derived short-lived intermediates. This methodology has been applied to the photocatalyzed degradation of different pollutants, such as acetaminophen, acetamiprid, caffeine and carbamazepine...
September 9, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28892774/simultaneous-leaching-of-arsenite-arsenate-selenite-and-selenate-and-their-migration-in-tunnel-excavated-sedimentary-rocks-ii-kinetic-and-reactive-transport-modeling
#5
Carlito Baltazar Tabelin, Ryosuke Sasaki, Toshifumi Igarashi, Ilhwan Park, Shuichi Tamoto, Takahiko Arima, Mayumi Ito, Naoki Hiroyoshi
Predicting the fates of arsenic (As) and selenium (Se) in natural geologic media like rocks and soils necessitates the understanding of how their various oxyanionic species behave and migrate under dynamic conditions. In this study, geochemical factors and processes crucial in the leaching and transport of arsenite (As(III)), arsenate (As(V)), selenite (Se(IV)) and selenate (Se(VI)) in tunnel-excavated rocks of marine origin were investigated using microscopic/extraction techniques, column experiments, dissolution-precipitation kinetics and one-dimensional reactive transport modeling...
August 23, 2017: Chemosphere
https://www.readbyqxmd.com/read/28853997/progress-in-deciphering-the-controls-on-the-geochemistry-of-fluids-in-seafloor-hydrothermal-systems
#6
Susan E Humphris, Frieder Klein
Over the last four decades, more than 500 sites of seafloor hydrothermal venting have been identified in a range of tectonic environments. These vents represent the seafloor manifestation of hydrothermal convection of seawater through the permeable oceanic basement that is driven by a subsurface heat source. Hydrothermal circulation has fundamental effects on the transfer of heat and mass from the lithosphere to the hydrosphere, the composition of seawater, the physical and chemical properties of the oceanic basement, and vent ecosystems at and below the seafloor...
August 30, 2017: Annual Review of Marine Science
https://www.readbyqxmd.com/read/28837591/modulation-of-nutrient-composition-of-black-soldier-fly-hermetia-illucens-larvae-by-feeding-seaweed-enriched-media
#7
Nina S Liland, Irene Biancarosa, Pedro Araujo, Daan Biemans, Christian G Bruckner, Rune Waagbø, Bente E Torstensen, Erik-Jan Lock
Black soldier fly (Hermetia illucens) larvae are a promising source of protein and lipid for animal feeds. The nutritional composition of the BSF larvae depend partly on the composition of the feeding medium. The BSF lipid profile in part mimics the feeding media lipid profile, and micronutrients, like minerals and vitamins, can readily accumulate in black soldier fly larvae. However, investigative studies on bioconversion and accumulation of nutrients from media to black soldier fly larvae are scarce. Here we show that inclusion of the brown algae Ascophyllum nodosum in the substrate for black soldier fly larvae can introduce valuable nutrients, commonly associated with the marine environment, into the larvae...
2017: PloS One
https://www.readbyqxmd.com/read/28833661/significant-performance-enhancement-of-polymer-resins-by-bioinspired-dynamic-bonding
#8
Sungbaek Seo, Dong Woog Lee, Jin Soo Ahn, Keila Cunha, Emmanouela Filippidi, Sung Won Ju, Eeseul Shin, Byeong-Su Kim, Zachary A Levine, Roberto D Lins, Jacob N Israelachvili, J Herbert Waite, Megan T Valentine, Joan Emma Shea, B Kollbe Ahn
Marine mussels use catechol-rich interfacial mussel foot proteins (mfps) as primers that attach to mineral surfaces via hydrogen, metal coordination, electrostatic, ionic, or hydrophobic bonds, creating a secondary surface that promotes bonding to the bulk mfps. Inspired by this biological adhesive primer, it is shown that a ≈1 nm thick catecholic single-molecule priming layer increases the adhesion strength of crosslinked polymethacrylate resin on mineral surfaces by up to an order of magnitude when compared with conventional primers such as noncatecholic silane- and phosphate-based grafts...
August 18, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28832530/the-response-of-heterotrophic-prokaryote-and-viral-communities-to-labile-organic-carbon-inputs-is-controlled-by-the-predator-food-chain-structure
#9
Ruth-Anne Sandaa, Bernadette Pree, Aud Larsen, Selina Våge, Birte Töpper, Joachim P Töpper, Runar Thyrhaug, Tron Frede Thingstad
Factors controlling the community composition of marine heterotrophic prokaryotes include organic-C, mineral nutrients, predation, and viral lysis. Two mesocosm experiments, performed at an Arctic location and bottom-up manipulated with organic-C, had very different results in community composition for both prokaryotes and viruses. Previously, we showed how a simple mathematical model could reproduce food web level dynamics observed in these mesocosms, demonstrating strong top-down control through the predator chain from copepods via ciliates and heterotrophic nanoflagellates...
August 23, 2017: Viruses
https://www.readbyqxmd.com/read/28802269/removal-of-soluble-strontium-into-biogenic-carbonate-minerals-from-a-highly-saline-solution-using-halophilic-bacterium-bacillus-sp-tk2d
#10
Takumi Horiike, Yuma Dotsuta, Yuriko Nakano, Asumi Ochiai, Satoshi Utsunomiya, Toshihiko Ohnuki, Mitsuo Yamashita
Radioactive strontium ((90)Sr) leaked into saline environments, including the ocean, from the Fukushima Daiichi Nuclear Power Plant after a nuclear accident. Since the removal of (90)Sr using general adsorbents (e.g., zeolite) is not efficient at high salinity, a suitable alternative immobilization method is necessary. Therefore, we incorporated soluble Sr into biogenic carbonate minerals generated by urease-producing microorganisms from a saline solution. An isolate, Bacillus sp. strain TK2d, from marine sediment removed > 99% Sr after contact for four days in a saline solution (1...
August 11, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28798082/long-dsrnas-promote-an-anti-viral-response-in-pacific-oyster-hampering-ostreid-herpesvirus-1-replication
#11
Marianna Pauletto, Amélie Segarra, Caroline Montagnani, Virgile Quillien, Nicole Faury, Jacqueline Le Grand, Philippe Miner, Bruno Petton, Yannick Labreuche, Elodie Fleury, Caroline Fabioux, Luca Bargelloni, Tristan Renault, Arnaud Huvet
Double stranded RNA-mediated genetic interference (RNAi) is a widely used reverse genetic tool for determining the loss-of-function phenotype of a gene. Here, the possible induction of an immune response by long dsRNA was tested in a marine bivalve, i.e. Crassostrea gigas, as well as the specific role of the subunit 2 of the nuclear factor κB inhibitor (IκB2). This gene is a candidate of particular interest for functional investigations in the context of massive mortality oyster events as Cg-IκB2 mRNA levels exhibited significant variation depending on the amount of ostreid herpesvirus 1 (OsHV-1) DNA detected...
August 10, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/28783518/synthesis-of-silica-nanoparticles-using-biomimetic-mineralization-with-polyallylamine-hydrochloride
#12
Kyoung-Ku Kang, Hyun-Seok Oh, Dong-Young Kim, Gyurak Shim, Chang-Soo Lee
To synthesize silica particles under mild conditions, we proposed a biomimetic synthesis method. The synthesis process was carried out based on a biphasic sol-gel synthesis method using TEOS (tetraethyl orthosilicate) as a silica source and PAH (polyallylamine) as a substitute for proteins of marine microorganisms for biosilicification. The function and activity of the PAH, used as a replacement for bioactive substances, were confirmed through comparisons between control experiments and designed experiments...
July 31, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28755011/impact-of-chiropractic-manipulation-on-bone-and-skeletal-muscle-of-ovariectomized-rats
#13
A López-Herradón, R Fujikawa, M Gómez-Marín, J P Stedile-Lovatel, F Mulero, J A Ardura, P Ruiz, I Muñoz, P Esbrit, I Mahíllo-Fernández, A Ortega-de Mues
Evidence suggests that chiropractic manipulation might exert positive effects in osteoporotic patients. The aim of this study was to evaluate the effects of chiropractic manipulation on bone structure and skeletal muscle in rats with bone loss caused by ovariectomy (OVX). The 6-month old Sprague-Dawley rats at 10 weeks following OVX or sham operation (Sh) did not suffer chiropractic manipulation (NM group) or were submitted to true chiropractic manipulation using the chiropractic adjusting instrument Activator V(®) three times/week for 6 weeks as follows: Force 1 setting was applied onto the tibial tubercle of the rat right hind limb (TM group), whereas the corresponding left hind limb received a false manipulation (FM group) consisting of ActivatorV(®) firing in the air and slightly touching the tibial tubercle...
July 28, 2017: Calcified Tissue International
https://www.readbyqxmd.com/read/28752088/electron-transfer-between-electrically-conductive-minerals-and-quinones
#14
Olga Taran
Long-distance electron transfer in marine environments couples physically separated redox half-reactions, impacting biogeochemical cycles of iron, sulfur and carbon. Bacterial bio-electrochemical systems that facilitate electron transfer via conductive filaments or across man-made electrodes are well-known, but the impact of abiotic currents across naturally occurring conductive and semiconductive minerals is poorly understood. In this paper I use cyclic voltammetry to explore electron transfer between electrodes made of common iron minerals (magnetite, hematite, pyrite, pyrrhotite, mackinawite, and greigite), and hydroquinones-a class of organic molecules found in carbon-rich sediments...
2017: Frontiers in Chemistry
https://www.readbyqxmd.com/read/28751791/the-development-of-contemporary-european-sea-bass-larvae-dicentrarchus-labrax-is-not-affected-by-projected-ocean-acidification-scenarios
#15
Amélie Crespel, José-Luis Zambonino-Infante, David Mazurais, George Koumoundouros, Stefanos Fragkoulis, Patrick Quazuguel, Christine Huelvan, Laurianne Madec, Arianna Servili, Guy Claireaux
Ocean acidification is a recognized consequence of anthropogenic carbon dioxide (CO2) emission in the atmosphere. Despite its threat to marine ecosystems, little is presently known about the capacity for fish to respond efficiently to this acidification. In adult fish, acid-base regulatory capacities are believed to be relatively competent to respond to hypercapnic conditions. However, fish in early life stage could be particularly sensitive to environmental factors as organs and important physiological functions become progressively operational during this period...
2017: Marine Biology
https://www.readbyqxmd.com/read/28738503/integration-of-protein-extraction-with-a-stream-of-byproducts-from-marine-macroalgae-a-model-forms-the-basis-for-marine-bioeconomy
#16
Tejal K Gajaria, Poornima Suthar, Ravi S Baghel, Nikunj B Balar, Preeti Sharnagat, Vaibhav A Mantri, C R K Reddy
The present study describes an advanced biorefinery model for marine macroalgae that assumes significant importance in the context of marine bio-economy. The method investigated in this study integrates the extraction of crude proteins with recovery of minerals rich sap, lipids, ulvan and cellulose from fresh biomass of Ulva lactuca. The protein content extracted was 11±2.12% on dry weight basis with recovery efficiency of 68.75±4.01%. The amino acid composition of crude protein fraction showed iso-leucine as the most abundant amino acid with 16...
July 5, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28720832/deep-ocean-dissolved-organic-matter-reactivity-along-the-mediterranean-sea-does-size-matter
#17
Alba María Martínez-Pérez, Xosé Antón Álvarez-Salgado, Javier Arístegui, Mar Nieto-Cid
Despite of the major role ascribed to marine dissolved organic matter (DOM) in the global carbon cycle, the reactivity of this pool in the dark ocean is still poorly understood. Present hypotheses, posed within the size-reactivity continuum (SRC) and the microbial carbon pump (MCP) conceptual frameworks, need further empirical support. Here, we provide field evidence of the soundness of the SRC model. We sampled the high salinity core-of-flow of the Levantine Intermediate Water along its westward route through the entire Mediterranean Sea...
July 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28713339/concurrent-methane-production-and-oxidation-in-surface-sediment-from-aarhus-bay-denmark
#18
Ke-Qing Xiao, Felix Beulig, Kasper U Kjeldsen, Bo B Jørgensen, Nils Risgaard-Petersen
Marine surface sediments, which are replete with sulfate, are typically considered to be devoid of endogenous methanogenesis. Yet, methanogenic archaea are present in those sediments, suggesting a potential for methanogenesis. We used an isotope dilution method based on sediment bag incubation and spiking with (13)C-CH4 to quantify CH4 turnover rates in sediment from Aarhus Bay, Denmark. In two independent experiments, highest CH4 production and oxidation rates (>200 pmol cm(-3) d(-1)) were found in the top 0-2 cm, below which rates dropped below 100 pmol cm(-3) d(-1) in all other segments down to 16 cm...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28688458/dating-the-middle-paleolithic-deposits-of-la-quina-amont-charente-%C3%A2-france-using-luminescence-methods
#19
Marine Frouin, Christelle Lahaye, Hélène Valladas, Thomas Higham, André Debénath, Anne Delagnes, Norbert Mercier
The site of La Quina Amont, located in the Charente region, is one of the most important sites in southwestern France for studying major changes in human behaviors from the Middle Paleolithic (MP) to the Early Upper Paleolithic (EUP). Extensively excavated over the past 50 years, numerous dating studies have been focused on the Upper Paleolithic deposits using radiocarbon on bone collagen and thermoluminescence (TL) on heated flints; however, the Mousterian levels remain undated due to the scarcity of suitable materials...
August 2017: Journal of Human Evolution
https://www.readbyqxmd.com/read/28680802/lobster-processing-by-products-as-valuable-bioresource-of-marine-functional-ingredients-nutraceuticals-and-pharmaceuticals
#20
REVIEW
Trung T Nguyen, Andrew R Barber, Kendall Corbin, Wei Zhang
The worldwide annual production of lobster was 165,367 tons valued over $3.32 billion in 2004, but this figure rose up to 304,000 tons in 2012. Over half the volume of the worldwide lobster production has been processed to meet the rising global demand in diversified lobster products. Lobster processing generates a large amount of by-products (heads, shells, livers, and eggs) which account for 50-70% of the starting material. Continued production of these lobster processing by-products (LPBs) without corresponding process development for efficient utilization has led to disposal issues associated with costs and pollutions...
2017: Bioresources and Bioprocessing
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