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https://www.readbyqxmd.com/read/29786949/the-qsofa-score-a-simple-and-accurate-predictor-of-outcomes-in-patients-with-glyphosate-herbicide-poisoning
#1
Yongsoo Cho, Byeongjo Chun, Jeongmi Moon
This study aimed to investigate whether the quick Sequential Organ Failure Assessment (qSOFA) score at emergency department (ED) presentation can help improve the risk assessment of glyphosate-surfactant herbicide (GlySH) poisoning complications. A total of 150 patients presenting with acute glyphosate herbicide ingestion were enrolled in this retrospective observational study. The qSOFA scores at presentation, ΔqSOFA (calculated by subtracting the worst qSOFA score from 1 hr after admission from the qSOFA score at presentation), baseline characteristics, clinical courses and outcomes were collected and analysed...
May 22, 2018: Basic & Clinical Pharmacology & Toxicology
https://www.readbyqxmd.com/read/29786615/morphological-control-of-gold-nanorods-via-thermally-driven-bi-surfactant-growth-and-application-for-detection-of-heavy-metal-ions
#2
Hao Huang, Huiyi Li, Huaiyu Wang, Jia Li, Penghui Li, Qidan Chen, Yue Chen, Paul K Chu, Bo Li, Xuefeng Yu
We report a modified synthesis route of colloidal gold nanorods (AuNRs) by combining the thermal re-shaping treatment and bi-surfactant modification using hexadecyltrimethylammonium bromide (CTAB) and sodium oleate (NaOL). Aspect ratios down to 1.3 ± 0.1 can be achieved in addition to good monodispersity, uniformity, and chemical stability of the materials. Furthermore, without needing post-treatment, metal ions directly interact with the AuNRs efficiently, allowing rapid and sensitive colorimetric detection of heavy metal ions such as Pb<sup>2+</sup> and Cu<sup>2+</sup> with a low concentration down to 2...
May 22, 2018: Nanotechnology
https://www.readbyqxmd.com/read/29785688/the-influence-of-nonionic-surfactant-adsorption-on-enzymatic-hydrolysis-of-oil-palm-fruit-bunch
#3
Jatuporn Parnthong, Suratsawadee Kungsanant, Sumaeth Chavadej
Nonionic surfactants have been utilized to improve the enzymatic hydrolysis of lignocellulosic materials. However, the role of surfactant adsorption affecting enzymatic hydrolysis has not been elaborated well. In this work, nonionic surfactants differing in their molecular structures, namely the polyoxyethylene sorbitan monooleate (Tween 80), the secondary alcohol ethoxylate (Tergitol 15-S-9), and the branched alcohol ethoxylate (Tergitol TMN-6), were studied for their effects on the enzymatic hydrolysis of palm fruit bunch (PFB)...
May 22, 2018: Applied Biochemistry and Biotechnology
https://www.readbyqxmd.com/read/29785608/reuse-of-organobentonites-with-a-carbon-dioxide-responsive-solvent
#4
Ling-Yu Luan, Li Zhang, Li-Hong Wang
Synthesized organobentonite (SOB), montmorillonite (MMT), and commercial organobentonite (COB) were used as adsorbents for paraffin oil, a model pollutant in land-based oil spills and oil pipeline rupture. The characterization of clays was carried out with scanning electron microscopy (SEM), thermogravimetric analysis (TG), Fourier transform infrared spectroscopy (FTIR), and X-ray diffraction (XRD). After adsorption, oil was separated from adsorbents with a carbon dioxide responsive solvent N,N-dimethylcyclohexylamine (DMCHA), and DMCHA was subsequently separated from paraffin oil upon CO2 bubbling instead of distillation with high energy cost...
May 22, 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29783154/enhanced-removal-of-p-nitrophenol-from-aqueous-media-by-montmorillonite-clay-modified-with-a-cationic-surfactant
#5
A Dos Santos, M F Viante, D J Pochapski, A J Downs, C A P Almeida
Montmorillonite clay (MC) yields after modification of the interlamellar spacing and the chemical character of its surface by treatment with cetyltrimethylammonium bromide (CTAB) a solid product (MCCTA). This has been used as an adsorbent for the removal of p-nitrophenol (PNP) from aqueous solutions. The MCCTA samples were characterized by scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), thermogravimetric analysis (TG/DTA), FT-IR spectroscopy, zeta potential measurements, X-ray diffraction (XRD), and specific surface area...
March 1, 2018: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/29783129/effect-of-surfactant-assisted-sonic-pretreatment-on-liquefaction-of-fruits-and-vegetable-residue-characterization-acidogenesis-biomethane-yield-and-energy-ratio
#6
M Shanthi, J Rajesh Banu, P Sivashanmugam
The present study explored the disintegration potential of fruits and vegetable residue through sodium dodecyl sulphate (SDS) assisted sonic pretreatment (SSP). In SSP method, initially the biomass barrier (lignin) was removed using SDS at different dosage, subsequently it was sonically disintegrated. The effect of SSP were assessed based on dissolved organic release (DOR) of fruits and vegetable waste and specific energy input. SSP method achieved higher DOR rate and suspended solids reduction (26% and 16%) at optimum SDS dosage of 0...
May 15, 2018: Bioresource Technology
https://www.readbyqxmd.com/read/29782985/facile-preparation-of-recombinant-spider-eggcase-silk-spheres-via-an-hfip-on-oil-approach
#7
Jianming Chen, Jinlian Hu, Peijun Zuo, Jingyu Shi, Mo Yang
Versatile spider silk proteins have been prepared by various methods in morphology of spheres for functional applications. Inspired from natural spinning process, a facile approach for the fabrication of silk spheres is described. Distinct from the traditional emulsification method, silk spheres were assembled as rapidly as 10 s by using the HFIP-on-Oil method without any surfactants and agitation used. Notably, a series of factors, such as evaporation rate of HFIP, polarity and molecular weight of oils play central roles on the final silk morphologies...
May 18, 2018: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29782805/maintaining-supersaturation-of-nimodipine-by-pvp-with-or-without-the-presence-of-sodium-lauryl-sulfate-and-sodium-taurocholate
#8
Yipshu Pui, Yuejie Chen, Huijun Chen, Shan Wang, Chengyu Liu, Wouter Tonnis, Linc Chen, Peter Serno, Stefan Bracht, Feng Qian
Amorphous solid dispersion (ASD) is one of the most versatile supersaturating drug delivery system to improve the dissolution rate and oral bioavailability of poorly water soluble drugs. PVP based ASD formulation of nimodipine (NMD) has been marketed and effectively used in clinic for nearly 30 years, yet the mechanism by which PVP maintains the supersaturation and subsequently improves the bioavailability of NMD was rarely investigated. In this research, we first studied the molecular interactions between NMD and PVP by solution NMR using CDCl3 as the solvent, and drug-polymer Flory-Huggins interaction parameter...
May 21, 2018: Molecular Pharmaceutics
https://www.readbyqxmd.com/read/29782804/ultrathin-uniform-platinum-nanowires-via-a-facile-route-using-an-inverse-hexagonal-surfactant-phase-template
#9
Samina Akbar, Jacob Boswell, Carys Worsley, Joanne M Elliott, Adam M Squires
In this paper, we present an attractive method for the fabrication of long, straight, highly crystalline ultra-thin platinum nanowires. The fabrication is simply achieved using an inverse hexagonal (HII) lyotropic liquid crystal phase of the commercial surfactant phytantriol as a template. A platinum precursor dissolved within the cylindrical aqueous channels of the liquid crystal phase is chemically reduced by galvanic displacement using stainless steel. We demonstrate the production of nanowires using the HII phase in the phytantriol/water system which we obtain either by heating to 55 °C, or at room temperature by the addition of a hydrophobic liquid, 9-cis-tricosene, to relieve packing frustration...
May 21, 2018: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/29780787/non-convulsive-seizure-related-to-cremophor-el%C3%A2-free-polymeric-micelle-formulation-of-paclitaxel-a-case-report
#10
Yoon Sun Shin, Kyung Jin Min, Seung Young Choi, Nak Woo Lee
Paclitaxel is a chemotherapeutic agent that is effective against ovarian, breast, lung, and other cancers. Although peripheral neurotoxicity is among the most common side effects of paclitaxel treatment, central neurotoxicity is rarely reported. When centrally mediated side effects are observed, they are attributed to Cremophor EL™ (CrEL), a surfactant-containing vehicle used for paclitaxel administration. In the present report, we discuss the case of a 72-year-old woman with ovarian carcinoma who experienced a non-convulsive seizure following administration of a CrEL-free, polymeric micelle formulation of paclitaxel...
May 2018: Obstetrics & Gynecology Science
https://www.readbyqxmd.com/read/29780568/anisotropic-functionalization-of-upconversion-nanoparticles
#11
Wei Ren, Shihui Wen, Sherif Abdulkader Tawfik, Qian P Su, Gungun Lin, Lining A Ju, Michael J Ford, Harshad Ghodke, Antoine M van Oijen, Dayong Jin
Despite significant advances toward accurate tuning of the size and shape of colloidal nanoparticles, the precise control of the surface chemistry thereof remains a grand challenge. It is desirable to conjugate functional bio-molecules onto the selected facets of nanoparticles owing to the versatile capabilities rendered by the molecules. We report here facet-selective conjugation of DNA molecules onto upconversion nanoparticles via ligand competition reaction. Different binding strengths of phosphodiester bonds and phosphate groups on DNA and the surfactant molecules allow one to create heterogeneous bio-chemistry surface for upconversion nanoparticles...
May 14, 2018: Chemical Science
https://www.readbyqxmd.com/read/29780489/highly-active-nano-sized-iridium-catalysts-synthesis-and-operando-spectroscopy-in-a-proton-exchange-membrane-electrolyzer
#12
P Lettenmeier, J Majchel, L Wang, V A Saveleva, S Zafeiratos, E R Savinova, J-J Gallet, F Bournel, A S Gago, K A Friedrich
A stable and cost effective oxygen evolution reaction (OER) catalyst is crucial for the large-scale market penetration of proton exchange membrane (PEM) water electrolyzers. We show that the synthesis of iridium nanoparticles in either low purity ethanol or water, or in the absence of a surfactant, is detrimental to the electrocatalytic properties of the materials. Adding NaBH4 in excess improves the purity of the catalyst enhancing the OER activity up to 100 A gIr -1 at 1.51 V vs. RHE, the highest value reported so far for high purity Ir nanoparticles...
April 14, 2018: Chemical Science
https://www.readbyqxmd.com/read/29778911/exposure-to-diethylhexyl-phthalate-dehp-and-monoethylhexyl-phthalate-mehp-promotes-the-loss-of-alveolar-epithelial-phenotype-of-a549-cells
#13
L Rafael-Vázquez, García-Trejo Semiramis, O G Aztatzi-Aguilar, B Bazán-Perkins, B Quintanilla-Vega
Di(2-ethylhexyl) phthalate (DEHP) is a widely used plasticizer that is metabolized to mono(2-ethylhexyl) phthalate (MEHP). Inhalation is an important exposure route for both phthalates, and their effects on lungs include inflammation, alteration of postnatal maturation (alveolarization), enlarged airspaces and cell differentiation changes, suggesting that alveolar epithelial cells-2 (AEC) are targets of phthalates. This study evaluated the cell progression, epithelial and mesenchymal markers, including surfactant secretion in A549 cells (AEC) that were exposed to DEHP (1-100 µM) or MEHP (1-50 µM) for 24-72 h...
May 17, 2018: Toxicology Letters
https://www.readbyqxmd.com/read/29778199/disinfection-of-transboundary-animal-disease-viruses-on-surfaces-used-in-pork-packing-plants
#14
Peter W Krug, Talina Davis, Catherine O'Brien, Michael LaRocco, Luis L Rodriguez
In the event of an intentional or accidental incursion of a transboundary animal disease (TAD) virus into the US, a major concern to the meat industry would be the potential contamination of packing plants by processing infected animals. TAD agents such as foot and mouth disease virus (FMDV), African swine fever virus (ASFV) and classical swine fever virus (CSFV) are found in swine products such as blood and feces and are present in the tissues of infected animals. To test the disinfection of TAD viruses in a pork-packing environment, a previously developed disinfection assay was used to test two biocides currently used by industry sanitarians, against TAD viruses dried on industry relevant surfaces in saline or swine products...
June 2018: Veterinary Microbiology
https://www.readbyqxmd.com/read/29777972/adsorption-kinetics-of-heptadecafluoro-1-nonanol-phase-transition-and-mixed-control
#15
Alvin Casandra, Boris A Noskov, Min-Yu Hu, Shi-Yow Lin
HYPOTHESIS: The adsorption kinetics of heptadecafluoro-1-nonanol (C9 H2 F17 OH) onto a clean air-water interface at low surfactant concentrations (equilibrium surface tension, γ(C) > 65 mN/m) has been reported, and the controlling mechanism was found to be mixed diffusive-kinetic controlled (Kuo et al., JCIS 402 (2013) 131). However, it remains to be determined what the adsorption kinetics are at higher concentrations. Hence, the dynamic surface tension, γ(t) of C9 H2 F17 OH was measured and compared with the theoretical γ(t) curves predicted from phase transition model...
May 12, 2018: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/29777932/application-of-a-surfactant-assisted-dispersive-liquid-liquid-microextraction-method-along-with-central-composite-design-for-micro-volume-based-spectrophotometric-determination-of-low-level-of-cr-vi-ions-in-aquatic-samples
#16
Hamid Reza Sobhi, Efat Azadikhah, Mohammad Behbahani, Ali Esrafili, Mahnaz Ghambarian
A fast, simple, low cost surfactant-assisted dispersive liquid-liquid microextraction method along with central composite design for the determination of low level of Cr(VI) ions in several aquatic samples has been developed. Initially, Cr(VI) ions present in the aqueous sample were readily reacted with 1,5‑diphenylcarbazide (DPC) in acidic medium through complexation. Sodium dodecyl sulfate (SDS), as an anionic surfactant, was then employed as an ion-pair agent to convert the cationic complex into the neutral one...
May 9, 2018: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/29777772/improving-maraviroc-oral-bioavailability-by-formation-of-solid-drug-nanoparticles
#17
Alison C Savage, Lee M Tatham, Marco Siccardi, Trevor Scott, Manoli Vourvahis, Andrew Clark, Steve P Rannard, Andrew Owen
Oral drug administration remains the preferred approach for treatment of HIV in most patients. Maraviroc (MVC) is the first in class co-receptor antagonist, which blocks HIV entry into host cells. MVC has an oral bioavailability of approximately 33%, which is limited by poor permeability as well as affinity for CYP3A and several drug transporters. While once-daily doses are now the favoured option for HIV therapy, dose-limiting postural hypotension has been of theoretical concern when administering doses high enough to achieve this for MVC (particularly during coadministration of enzyme inhibitors)...
May 16, 2018: European Journal of Pharmaceutics and Biopharmaceutics
https://www.readbyqxmd.com/read/29777525/preconcentration-and-determination-of-trace-nickel-and-cobalt-in-milk-based-samples-by-ultrasound-assisted-cloud-point-extraction-coupled-with-flame-atomic-absorption-spectrometry
#18
Nuket Kartal Temel, Kadriye Sertakan, Ramazan Gürkan
In this study, ultrasound-assisted cloud point extraction (UA-CPE) method was developed for the determination of Ni(II) and Co(II) in milk-based products. After extraction and preconcentration, the Ni(II) and Co(II) contents of samples were determined by flame atomic absorption spectrometry (FAAS). After their complexation with hydroxy naphthol blue (HNB) in the presence of cationic surfactant, CTAB at pH 4.0, the Ni(II) and Co(II) were taken within the micellar phase of nonionic surfactant, TX-114. The micellar phase containing the analytes were diluted to a volume of 0...
May 18, 2018: Biological Trace Element Research
https://www.readbyqxmd.com/read/29775707/in-vitro-digestibility-of-normal-and-waxy-corn-starch-is-modified-by-the-addition-of-tween-80
#19
E J Vernon-Carter, J Alvarez-Ramirez, L A Bello-Perez, A Garcia-Hernandez, C Roldan-Cruz, S Garcia-Diaz
Aqueous dispersions of normal and waxy corn starch (3% w/w) were mixed with Tween 80 (0, 7.5, 15, 22.5 and 30 g/100 g of starch), and gelatinized (90 °C, 20 min). Optical microscopy of the gelatinized starch dispersions (GSDx ; x = Tween 80 concentration) revealed that the microstructure was characterized by a continuous phase of leached amylose and amylopectin entangled chains, and a dispersed phase of insoluble remnants, called ghosts, on whose surface small granules were observed, imputed to Tween 80...
May 15, 2018: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29775706/purification-and-characterization-of-an-organic-solvent-tolerant-and-detergent-stable-lipase-from-haloferax-mediterranei-cncmm-50101
#20
Siham Akmoussi-Toumi, Souad Khemili-Talbi, Imen Ferioune, Salima Kebbouche-Gana
The present study investigates the purification and biochemical characterization of an extracellular lipase (HML) from Haloarchaea Haloferax mediterranei strain ATS1, isolated from the Sebkha (Medea, Algeria). The pure protein was obtained with ammonium sulfate precipitation (40-70%)-dialysis and UNO Q-6 FPLC, and characterized biochemically. Matrix assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF/MS) analysis revealed that the purified enzyme was a monomer, with a molecular mass of 45,011...
May 15, 2018: International Journal of Biological Macromolecules
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