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Canlan Jiang, Yuefei Ji, Yuanyuan Shi, Jifei Chen, Tianming Cai
Widespread occurrence of fluoroquinolone antibiotics (FQs) in surface water, groundwater, soil and sediment has been reported and their remediation is essentially needed. Sulfate radical (SO4(-)) based advanced oxidation processes (SR-AOPs) are promising technologies for soil and groundwater remediation. In this study, the degradation kinetics, mechanisms, and effects of natural water matrices on heat-activated persulfate (PS) oxidation of FQs were systematically investigated. Experimental results clearly demonstrated that 92% of CIP was removed within 180 min (pH = 7, 60 °C)...
October 12, 2016: Water Research
Esra Özdil Demiryürek, Atilla Tekin, Engin Çakmak, Osman Temizkan, Oğuz Karamustafalıoğlu, Sibel Gökova, Enes Demiryürek
OBJECTIVE: The aim of this study was to investigate the relationship between anger, impulsiveness, and biochemical parameters (testosterone, insulin, insulin resistance) in women with polycystic ovary syndrome. STUDY DESIGN: We recruited 84 women diagnosed with polycystic ovary syndrome according to the Rotterdam diagnostic criteria. Psychiatric interviews were performed using the Structured Clinical Interview for DSM-IV Axis I Disorders. The Barratt Impulsiveness Scale and the State Trait Anger Expression Inventory were also administered to each participant...
October 6, 2016: European Journal of Obstetrics, Gynecology, and Reproductive Biology
Kamelia Afshinnia, Mithun Sikder, Bo Cai, Mohammed Baalousha
Nanomaterial (NM) aggregation is a key process determining their environmental, fate behavior and effects. Nanomaterials are typically engineered to remain kinetically stable; however, in environmental and toxicological media, NMs are prone to aggregation. The aggregation kinetics of NM is typically quantified by measuring their attachment efficiency (α) and critical coagulation concentration (CCC). Several studies measured α and CCC for Ag NMs with a major focus on investigating the effects of ionic strength, ion valency and natural organic matter, with few studies investigating other environmental factors such as light and dissolved oxygen and none investigating the effect of particle size, buffer type and concentration, or surface coverage by capping agent...
October 17, 2016: Journal of Colloid and Interface Science
Fuqin Zou, Dong Zeng, Bin Wen, Hao Sun, Yi Zhou, Mingyue Yang, Zhirong Peng, Shuai Xu, Hesong Wang, Xiangchao Fu, Dan Du, Yan Zeng, Hui Zhu, Kangcheng Pan, Bo Jing, Ping Wang, Xueqin Ni
Antibiotics have been widely used for the prevention and the treatment of diseases to humans and animals, and they have fed additives for agricultural animals to promote growth. However, there is a growing concern over the practice due to its side effects on intestinal microbial communities which plays a vital role in animals' health. To investigate the effect of antibiotics on the bacterial population of the caecum in rex rabbits, 80 rex rabbits were randomly divided into four groups: control group (B, basal diet), chlortetracycline group (C, 50 mg/kg), colistin sulfate group (S, 20 mg/kg) and zinc bacitracin group (Z, 40 mg/kg)...
December 2016: AMB Express
Zhongbing Chen, Jan Vymazal, Peter Kuschk
Three different flow regimes were carried out in a pilot-scale horizontal subsurface flow constructed wetland-treating sulfate rich wastewater contaminated with monochlorobenzene (MCB) and perchloroethene (PCE). The three regimes were continuous flow, 7-day cycle discontinuous flow, and 2.5-day cycle discontinuous flow. The results show that intensifying the tidal regime (2.5-day cycle) significantly enhanced MCB removal before 2 m from the inlet and increasing PCE removal efficiency at 0.5 m. The PCE dechlorination process was promoted with tidal operation, especially under the 2...
October 21, 2016: Environmental Science and Pollution Research International
Zhaoyue Wang, Xuejing Bai, Xuena Guo, Xiuping He
2-Phenylethanol (2-PE) is widely used in food, perfume and pharmaceutical industry, but lower production in microbes and less known regulatory mechanisms of 2-PE make further study necessary. In this study, crucial genes like ARO8 and ARO10 of Ehrlich pathway for 2-PE synthesis and key transcription factor ARO80 in Saccharomyces cerevisiae were re-regulated using constitutive promoter; in the meantime, the effect of nitrogen source in synthetic complete (SC) medium with L-phenylalanine (L-Phe) on Aro8/Aro9 and Aro10 was investigated...
October 21, 2016: Journal of Industrial Microbiology & Biotechnology
Islam Ghazi, Yukihiro Hamada, David P Nicolau
PURPOSE: The physical compatibility of commonly used agents that could be coadministered in the clinical setting with tedizolid phosphate during Y-site administration was evaluated. METHODS: Tedizolid phosphate vials were reconstituted to a final concentration of 0.8 mg/mL. All other drugs were prepared according to manufacturers' recommendations and diluted with 0.9% sodium chloride injection (where applicable) to the highest standard concentrations used clinically...
November 1, 2016: American Journal of Health-system Pharmacy: AJHP
Changliang Zhu, Jingliang Zhang, Jing Zhang, Yanhui Jiang, Zhaopeng Shen, Huashi Guan, Xiaolu Jiang
An extracellular chondroitinase ABC (ChSase ABC, EC produced by cultivating Acinetobacter sp. C26, was purified to homogeneity from the supernatant by ammonium sulfate fractionation, Q-Sepharose Fast Flow and Sephadex G-100 chromatography. The 76kDa enzyme was purified 48.09-fold to homogeneity with specific activity of 348.64U/mg, Using the chondroitin sulfate A (CS-A) as substrate, the maximal reaction rate (Vmax) and Michaelis-Menten constant (Km) of ChSase ABC were found to be 10.471μmol/min/ml and 0...
October 18, 2016: International Journal of Biological Macromolecules
Naseer Iqbal, Mukesh Kumar, Pradeep Sharma, Satya Prakash Yadav, Punit Kaur, Sujata Sharma, Tej P Singh
Dehydroquinase (3-dehydroquinate dehydratase, DHQD, EC catalyzes the conversion of dehydroquinate to dehydroshikimate. DHQD from Acinetobacter baumannii (AbDHQD) was cloned, expressed and purified to homogeneity. The binding studies showed that two compounds quinic acid and citrazinic acid bound to AbDHQD at micromolar concentrations. AbDHQD was crystallized using 30% PEG-3350, 50mM tris-HCl and 1.0M MgSO4 at PH 8.0. Crystals of AbDHQD were stabilized with 25% glycerol for data collection at 100K...
October 18, 2016: International Journal of Biological Macromolecules
Xuemei Lin, Gang Wei, Zhijun Huang, Zhongsen Qu, Xinfeng Huang, Hua Xu, Jianjun Liu, Zhixiong Zhuang, Xifei Yang
Mitochondrial dysfunction is involved in neurotoxicity caused by exposure of various chemicals such as copper. However, the effects of long-term low-dose copper exposure on mitochondrial proteome remain unclear. In this study, we found the treatment of copper (0.13ppm copper sulfate in drinking water) for 12 months caused abnormal expression of a total of 13 mitochondrial proteins (7 up-regulated and 6 down-regulated) as revealed by two-dimensional electrophoresis coupled with mass spectrometry in mouse cortex...
October 18, 2016: Toxicology Letters
Zhanzhan Du, Fang Shi, Dong Liu, Hongling Ye, Maheen Mahwish Surhio, Jinglei Li, Ming Ye
A sulfated polysaccharide, designated as SLEP-1, was obtained after sulfation of the exopolysaccharide (LEP-1) which was isolated from Lachnum. The degree of substitution (DS) of sulfate group of SLEP-1 was 1.97. SEM images of SLEP-1 revealed laminated structure in mesh. UV, FT-IR and (13)C NMR spectra indicated that the LEP-1 was sulfated successfully. The result of the anticoagulant activity in vitro showed that both of LEP-1 and SLEP-1 could effectively prolong activated partial thromboplastin time (APTT) and thrombin time (TT) of the normal mice plasma, in which SLEP-1 was more effectively than those of LEP-1, and dose-effect relationships were found...
October 1, 2016: Bioorganic & Medicinal Chemistry Letters
Xiyue Xiong, Haiqin He, Yan Shu, Yuxin Li, Zihui Yang, Yingzhuang Chen, Ming Ma, Bo Chen
A facile, flexible process was developed for the preparation of surface-glycosylated porous monolithic columns via aqueous two-phase graft copolymerization of polyethylene glycol diacrylate (PEGDA) and water-soluble dextran (dextran sulfate). The formation of poly(PEGDA) porous skeletons and surface glycosylation were achieved via a one-step process without pre-modification of the dextran. The synthesis conditions were thoroughly optimized. The optimal monolithic column exhibited a large dry state surface area (greater than 400m(2)/g), and it was evaluated as a hydrophilic liquid chromatography (HILIC) stationary phase...
December 1, 2016: Talanta
Richard Kalisa, Stephen Rulisa, Thomas van den Akker, Jos van Roosmalen
BACKGROUND: The WHO Maternal Near Miss (MNM) approach was developed to evaluate and improve quality of obstetric care worldwide. This study aimed to study the incidence of MNM and quality of care at a district hospital in rural Rwanda by applying this approach. METHODS: A facility based, prospective cohort study conducted at a district hospital in rural Rwanda between June 2013 and December 2014. Subjects were followed from time of admission to discharge or death...
October 21, 2016: BMC Pregnancy and Childbirth
Majid Jafari, Faramarz Mehrnejad
Changes in the tertiary structure of proteins and the resultant fibrillary aggregation could result in fatal heredity diseases, such as lysozyme systemic amyloidosis. Human lysozyme is a globular protein with antimicrobial properties with tendencies to fibrillate and hence is known as a fibril-forming protein. Therefore, its behavior under different ambient conditions is of great importance. In this study, we conducted two 500000 ps molecular dynamics (MD) simulations of human lysozyme in sodium dodecyl sulfate (SDS) at two ambient temperatures...
2016: PloS One
Arne O Melleby, Mari E Strand, Andreas Romaine, Kate M Herum, Biljana Skrbic, Christen P Dahl, Ivar Sjaastad, Arnt E Fiane, Jorge Filmus, Geir Christensen, Ida G Lunde
Pressure overload is a frequent cause of heart failure. Heart failure affects millions of patients worldwide and is a major cause of morbidity and mortality. Cell surface proteoglycans are emerging as molecular players in cardiac remodeling, and increased knowledge about their regulation and function is needed for improved understanding of cardiac pathogenesis. Here we investigated glypicans (GPC1-6), a family of evolutionary conserved heparan sulfate proteoglycans anchored to the extracellular leaflet of the cell membrane, in experimental and clinical heart failure, and explored the function of glypican-6 in cardiac cells in vitro...
2016: PloS One
Michelle R Robinson, Jennifer S Brodbelt
Tyrosine sulfation is an important post-translational modification but remains difficult to detect in biological samples owing to its low stoichiometric abundance and the lack of effective enrichment methods. In the present study, weak anion exchange (WAX) is evaluated for the enrichment of sulfopeptides that have been modified via carbamylation to convert all primary amines to less basic carbamates. The decrease in basicity enhanced the binding of carbamylated sulfopeptides to WAX resin relative to non-sulfated peptides...
October 21, 2016: Analytical Chemistry
H Esfandiari, M Pakravan, Z Zakeri, S Ziaie, P Pakravan, V Ownagh
PurposeThe purpose of the study was to investigate ocular hypertensive effect of exogenous glucosamine in comparison with placebo in patients with osteoarthritis.Patients and methodsIn this double-masked randomized clinical trial, 88 patients with osteoarthritis were included. Forty-four patients were randomized into either glucosamine sulfate or the placebo group.Comprehensive ophthalmologic exam including intraocular pressure (IOP) at baseline, month 1, and 3 was performed. Ocular response analyzer parameters were also checked at baseline and month 3...
October 21, 2016: Eye
Astha Garg, Charles A Cartier, Kyle J M Bishop, Darrell Velegol
The zeta potential of a particle characterizes its motion in an electric field and is often thought to be negligible at high ionic strength (several moles per liter) due to thinning of the electrical double layer (EDL). Here, we describe zeta potential measurements on polystyrene latex (PSL) particles at monovalent salt concentrations up to saturation (~ 5 M NaCl) using electrophoresis in sinusoidal electric fields and high-speed video microscopy. Our measurements reveal that the zeta potential remains finite at even the highest concentrations...
October 21, 2016: Langmuir: the ACS Journal of Surfaces and Colloids
Erwann Le Gendre, Erwan Martin, Benoit Villemant, Pierre Cartigny, Nelly Assayag
RATIONALE: The O- and S- isotope compositions of sulfates can be used as key tracers of the fate and sink of sulfate in both terrestrial and extra-terrestrial environments. However, their application remains limited in those geological systems where sulfate occurs in low concentrations. Here we present a simple and reliable method to extract, purify and concentrate sulfate from natural samples. The method allows us to take into account the separation of nitrate, which is known to be an issue in O-isotope analysis...
October 21, 2016: Rapid Communications in Mass Spectrometry: RCM
Matt Shirley, Lesley J Scott
Isavuconazole is a second-generation triazole with activity against a broad spectrum of clinically important fungi. Its water-soluble prodrug, isavuconazonium sulfate (Cresemba(®)), available in interchangeable intravenous and oral formulations, is approved in the USA and EU for the treatment of adults with invasive aspergillosis and mucormycosis. In international phase III clinical trials, isavuconazole was efficacious and generally well tolerated in the treatment of these life-threatening diseases. In the phase III SECURE trial, isavuconazole was non-inferior to voriconazole for the primary treatment of invasive mould disease (primarily aspergillosis) and was associated with fewer drug-related treatment-emergent adverse events (TEAEs) than voriconazole...
October 20, 2016: Drugs
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