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https://www.readbyqxmd.com/read/28903607/candida-endocarditis-systematic-literature-review-from-1997-to-2014-and-analysis-of-29-cases-from-the-italian-study-of-endocarditis
#1
Simone Giuliano, Maurizio Guastalegname, Alessandro Russo, Marco Falcone, Veronica Ravasio, Marco Rizzi, Matteo Bassetti, Pierluigi Viale, Maria Bruna Pasticci, Emanuele Durante-Mangoni, Mario Venditti
Candida Endocarditis (CE) is a deadly disease. It is of paramount importance to assess risk factors for acquisition of both Candida native (NVE) and prosthetic (PVE) valve endocarditis and relate clinical features and treatment strategies with the outcome of the disease. Areas covered: We searched the literature using the Pubmed database. Cases of CE from the Italian Study on Endocarditis (SEI) were also included. Overall, 140 cases of CE were analyzed. Patients with a history of abdominal surgery and antibiotic exposure had higher probability of developing NVE than PVE...
September 14, 2017: Expert Review of Anti-infective Therapy
https://www.readbyqxmd.com/read/28866443/subminimal-inhibitory-concentration-sub-mic-of-antibiotic-induces-electroactive-biofilm-formation-in-bioelectrochemical-systems
#2
Lean Zhou, Tian Li, Jingkun An, Chengmei Liao, Nan Li, Xin Wang
Electroactive biofilms (EABs) generated from mixed inocula are attractive due to their unique direct extracellular electron transfer abilities and potential use in water pollution control. In this study, for the first time, we identified a chemical that can be used for EAB regulation (both inhibition and promotion). We confirmed that tobramycin, an antibiotic previously demonstrated to inhibit the activity of EABs, is an agonist of EAB formation at subminimal inhibitory concentrations (sub-MICs). Compared to the control, at tobramycin concentrations of 0...
August 29, 2017: Water Research
https://www.readbyqxmd.com/read/28799331/flexible-sic-si3n4-composite-nanofibers-with-in-situ-embedded-graphite-for-highly-efficient-electromagnetic-wave-absorption
#3
Peng Wang, Laifei Cheng, Yani Zhang, Litong Zhang
SiC/Si3N4 composite nanofibers with in situ embedded graphite, which show highly efficient electromagnetic (EM) wave absorption performance in gigahertz frequency, were prepared by electrospinning with subsequent polymer pyrolysis and annealing. By means of incorporating graphite and Si3N4 into SiC, the EM wave absorption properties of the nanofibers were improved. The relationship among processing, fiber microstructure, and their superior EM wave absorption performance was systematically investigated. The EM wave absorption capability and effective absorption bandwidth (EAB) of nanofibers can be simply controlled by adjusting annealing atmosphere and temperature...
August 30, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28752407/variation-in-the-volatile-profiles-of-black-and-manchurian-ash-in-relation-to-emerald-ash-borer-oviposition-preferences
#4
Chad M Rigsby, Nathaniel B McCartney, Daniel A Herms, James H Tumlinson, Don Cipollini
Emerald ash borer (EAB; Agrilus planipennis) is a devastating pest of ash (Fraxinus spp.) in its invaded range in North America. Its coevolved Asian hosts are more resistant and less preferred for oviposition than susceptible North American species. We compared EAB oviposition preferences and bark and canopy volatile organic compound (VOC) emissions of resistant Manchurian ash and susceptible black ash, and examined relationships between VOC profiles and oviposition. In the field, black ash was highly preferred for oviposition while no eggs were laid on Manchurian ash, and we found clear differences in the VOC profiles of Manchurian and black ash...
July 27, 2017: Journal of Chemical Ecology
https://www.readbyqxmd.com/read/28745865/electroactive-biofilms-for-sensing-reflections-and-perspectives
#5
Antonin Prévoteau, Korneel Rabaey
Microbial electrochemistry has from the onset been recognized for its sensing potential due to the microbial ability to enhance signals through metabolic cascades, its relative selectivity toward substrates, and the higher stability conferred by the microbial ability to self-replicate. The greatest challenge has been to achieve stable and efficient transduction between a microorganism and an electrode surface. Over the past decades, a new kind of microbial architecture has been observed to spontaneously develop on polarized electrodes: the electroactive biofilm (EAB)...
August 25, 2017: ACS Sensors
https://www.readbyqxmd.com/read/28671824/exclusive-extracellular-bioreduction-of-methyl-orange-by-azo-reductase-free-geobacter-sulfurreducens
#6
Yi-Nan Liu, Feng Zhang, Jie Li, Dao-Bo Li, Dong-Feng Liu, Wen-Wei Li, Han-Qing Yu
Azo dyes are a class of recalcitrant organic pollutants causing severe environmental pollution. For their biodecolorization, the azo reductase system was considered as the major molecular basis in bacteria. However, the intracellular localization of azo reductase limits their function for efficient azo dye decolorization. This limitation may be circumvented by electrochemically active bacteria (EAB) which is capable of extracellular respiration. To verify the essential role of extracellular respiration in azo dye decolorization, Geobacter sulfurreducens PCA, a model EAB, was used for the bioreduction of methyl orange (MO), a typical azo dye...
July 14, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28647320/an-integrated-aerobic-anaerobic-strategy-for-performance-enhancement-of-pseudomonas-aeruginosa-inoculated-microbial-fuel-cell
#7
Xiao-Yu Yong, Zhi-Ying Yan, Hai-Bo Shen, Jun Zhou, Xia-Yuan Wu, Li-Juan Zhang, Tao Zheng, Min Jiang, Ping Wei, Hong-Hua Jia, Yang-Chun Yong
Microbial fuel cell (MFC) is a promising device for energy generation and organic waste treatment simultaneously by electrochemically active bacteria (EAB). In this study, an integrated aerobic-anaerobic strategy was developed to improve the performance of P. aeruginosa-inoculated MFC. With an aerobic start-up and following an anaerobic discharge process, the current density of MFC reached a maximum of 99.80µA/cm(2), which was 91.6% higher than the MFC with conventional constant-anaerobic operation. Cyclic voltammetry and HPLC analysis showed that aerobic start-up significantly increased electron shuttle (pyocyanin) production (76% higher than the constant-anaerobic MFC)...
October 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28638375/valorization-of-spent-escherichia-coli-media-using-green-microalgae-chlamydomonas-reinhardtii-and-feedstock-production
#8
Jian-Guo Zhang, Fang Zhang, Kiran Thakur, Fei Hu, Zhao-Jun Wei
The coupling of Chlamydomonas reinhardtii biomass production for nutrients removal of Escherichia coli anaerobic broth (EAB) is thought to be an economically feasible option for the cultivation of microalgae. The feasibility of growing microalgae in using EAB high in nutrients for the production of more biomass was examined. EAB comprised of nutrient-abundant effluents, which can be used to produce microalgae biomass and remove environment pollutant simultaneously. In this study, C. reinhardtii 21gr (cc1690) was cultivated in different diluted E...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28624619/quorum-sensing-signals-enhance-the-electrochemical-activity-and-energy-recovery-of-mixed-culture-electroactive-biofilms
#9
Shanshan Chen, Xianyue Jing, Jiahuan Tang, Yanlun Fang, Shungui Zhou
The impacts of exogenous or endogenous quorum sensing (QS) signaling molecules on mixed-culture electroactive biofilms (EABs), especially extracellular polymeric substances (EPS) and exoelectrogens using direct electron transfer mechanism inside EABs are poorly understood. This research focuses on the influence of acylhomoserine lactones (AHLs), the most common QS signaling molecules for gram negative bacteria, on mixed-culture EABs. Results indicated that both exogenous and endogenous AHLs played the role as regulators to improve the electrochemical activities of EABs...
June 13, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/28619638/development-and-characterization-of-cuttlefish-sepia-officinalis-skin-gelatin-protein-isolate-blend-films
#10
Hela Kchaou, Mourad Jridi, Ola Abdelhedi, Benbettaïeb Nasreddine, Thomas Karbowiak, Moncef Nasri, Frédéric Debeaufort
In the present study, cuttlefish skin gelatin (CSG) and protein isolate (CSPI) blend films were prepared and their physicochemical and antioxidant properties were characterized. CSG (4%, w/v) was blended with CSPI (3%, w/v) at different ratios and 15% of glycerol (w/w, plasticizer/polymer dry matter). Results showed that increasing of CSPI content induced lower lightness but higher redness, yellowness and color difference values compared to CSG film. In addition, CSPI film had the lowest tensile strength (TS) and elongation at break (EAB) values...
June 12, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28594183/the-opposite-effect-of-water-and-n-methyl-2-pyrrolidone-cosolvents-on-the-nanostructural-organization-of-ethylammonium-butanoate-ionic-liquid-a-small-and-wide-angle-x-ray-scattering-and-molecular-dynamics-simulations-study
#11
Umme Salma, Natalia V Plechkova, Ruggero Caminiti, Lorenzo Gontrani
Two series of mixtures of ethylammoniumbutanoate (EAB, [N0 0 0 2][C3CO2]) in water and N-methyl-2-pyrrolidone (NMP) have been prepared at different molar fractions to assess the effect of these two polar solvents on the nanostructural order present in [N0 0 0 2][C3CO2]. The small- and wide-angle X-ray scattering (SWAXS) pattern of the liquid in neat state shows a prepeak at Q = 0.513 Å(-1), which is associated with the aggregation of nonpolar alkyl chains of both cations and anions. Interestingly, the two solvents affect the nanostructure of [N0 0 0 2][C3CO2] differently, though both are polar...
June 26, 2017: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/28571278/applicability-of-the-cielab-and-ciede2000-formulae-for-detection-of-colour-changes-in-colour-changeable-chewing-gum-for-evaluating-masticatory-function
#12
Yesiboli Yeerken, Takafumi Otomaru, Mohamed Said, Na Li, Hisashi Taniguchi
INTRODUCTION: Mastication is one of the essential stomatognathic functions and is impaired when mandibulectomy is performed for removal of head and neck lesions. AIM: The purpose of this study was to investigate the correlation between perceived chewing ability {Masticatory Score (MS)} and objective mixing ability (∆E) in patients who had undergone marginal mandibulectomy. MATERIALS AND METHODS: Twenty normal dentate subjects as control group and twenty mandibulectomy patients who had undergone marginal mandibulectomy and wearing a dentomaxillary prosthesis were enrolled...
April 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28511349/brown-and-black-carbon-in-beijing-aerosol-implications-for-the-effects-of-brown-coating-on-light-absorption-by-black-carbon
#13
Yuan Cheng, Ke-Bin He, Guenter Engling, Rodney Weber, Jiu-Meng Liu, Zhen-Yu Du, Shu-Ping Dong
Brown carbon (BrC) is increasingly included in climate models as an emerging category of particulate organic compounds that can absorb solar radiation efficiently at specific wavelengths. Water-soluble organic carbon (WSOC) has been commonly used as a surrogate for BrC; however, it only represents a limited fraction of total organic carbon (OC) mass, which could be as low as about 20% in urban atmosphere. Using methanol as the extraction solvent, up to approximately 90% of the OC in Beijing aerosol was isolated and measured for absorption spectra over the ultraviolet-to-visible wavelength range...
December 1, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28483618/perigraft-seroma-after-extra-anatomic-bypass-case-series-and-review-of-the-literature
#14
REVIEW
Daniele Bissacco, Maurizio Domanin, Silvia Romagnoli, Livio Gabrielli
AIM: extra-anatomic bypass (EAB) remains a viable alternative for lower limbs revascularization if aorto-bifemoral bypass and endovascular therapy are contraindicated. Among EAB, periprosthetic seroma (PS) occurs in about 4% of cases. Diagnostic and therapeutic management, as well as standardized treatment paradigm, are still not well defined. The aim of this study is to report 5 PS cases in EAB and to review literature about similar cases. METHODS: We retrospectively reviewed EAB performed during the period 2002-2015...
May 5, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28424161/response-and-progression-on-midostaurin-in-advanced-systemic-mastocytosis-kit-d816v-and-other-molecular-markers
#15
Mohamad Jawhar, Juliana Schwaab, Nicole Naumann, Hans-Peter Horny, Karl Sotlar, Torsten Haferlach, Georgia Metzgeroth, Alice Fabarius, Peter Valent, Wolf-Karsten Hofmann, Nicholas C P Cross, Manja Meggendorfer, Andreas Reiter
In advanced systemic mastocytosis (advSM), disease evolution is often triggered by KIT mutations (D816V in >80% of cases) and by additional mutations (eg, in SRSF2, ASXL1, and/or RUNX1 [S/A/R(pos) in >60% of cases]). In a recently reported phase 2 study, midostaurin, a multikinase/KIT inhibitor, demonstrated an overall response rate (ORR) of 60% in advSM but biomarkers predictive of response are lacking. We evaluated the impact of molecular markers at baseline and during follow-up in 38 midostaurin-treated advSM patients...
July 13, 2017: Blood
https://www.readbyqxmd.com/read/28412621/xanthium-strumarium-l-seed-hull-as-a-zero-cost-alternative-for-rhodamine-b-dye-removal
#16
Shraddha Khamparia, Dipika Kaur Jaspal
Treatment of polluted water has been considered as one of the most important aspects in environmental sciences. Present study explores the decolorization potential of a low cost natural adsorbent Xanthium strumarium L. seed hull for the adsorption of a toxic xanthene dye, Rhodamine B (RHB). The characterization of the adsorbent revealed the presence of high amount of carbon, when exposed to Electron Dispersive Spectroscopy (EDS). Further appreciable decolorization took place which was confirmed by Fourier Transform Infrared Spectroscopy (FTIR) analysis noticing shift in peaks...
April 13, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28334923/validated-rp-hplc-dad-method-for-the-quantification-of-insect-repellent-ethyl-2-aminobenzoate-in-membrane-moderated-matrix-type-monolithic-polymeric-device
#17
Johirul Islam, Kamaruz Zaman, Srijita Chakrabarti, Nilutpal Sharma Bora, Santa Mandal, Manash Pratim Pathak, Pakalapati Srinivas Raju, Pronobesh Chattopadhyay
A simple, accurate and sensitive reversed-phase high-performance liquid chromatographic (RP-HPLC) method has been developed for the estimation of ethyl 2-aminobenzoate (EAB) in a matrix type monolithic polymeric device and validated as per the International Conference on Harmonization guidelines. The analysis was performed isocratically on a ZORBAX Eclipse plus C18 analytical column (250 × 4.4 mm, 5 μm) and a diode array detector (DAD) using acetonitrile and water (75:25 v/v) as the mobile phase by keeping the flow-rate constant at 1...
July 1, 2017: Journal of Chromatographic Science
https://www.readbyqxmd.com/read/28273578/polarity-inversion-of-bioanode-for-biocathodic-reduction-of-aromatic-pollutants
#18
Hui Yun, Bin Liang, De-Yong Kong, Hao-Yi Cheng, Zhi-Ling Li, Ya-Bing Gu, Hua-Qun Yin, Ai-Jie Wang
The enrichment of specific pollutant-reducing consortium is usually required prior to the startup of biocathode bioelectrochemical system (BES) and the whole process is time consuming. To rapidly establish a non-specific functional biocathode, direct polar inversion from bioanode to biocathode is proposed in this study. Based on the diverse reductases and electron transfer related proteins of anode-respiring bacteria (ARB), the acclimated electrochemically active biofilm (EAB) may catalyze reduction of different aromatic pollutants...
February 27, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28255172/reaching-back-the-relative-strength-of-the-retroactive-emotional-attentional-blink
#19
Áine Ní Choisdealbha, Richard M Piech, John K Fuller, David H Zald
Visual stimuli with emotional content appearing in close temporal proximity either before or after a target stimulus can hinder conscious perceptual processing of the target via an emotional attentional blink (EAB). This occurs for targets that appear after the emotional stimulus (forward EAB) and for those appearing before the emotional stimulus (retroactive EAB). Additionally, the traditional attentional blink (AB) occurs because detection of any target hinders detection of a subsequent target. The present study investigated the relations between these different attentional processes...
March 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28214586/mango-kernel-starch-gum-composite-films-physical-mechanical-and-barrier-properties
#20
Anjum Nawab, Feroz Alam, Muhammad Abdul Haq, Zubala Lutfi, Abid Hasnain
Composite films were developed by the casting method using mango kernel starch (MKS) and guar and xanthan gums. The concentration of both gums ranged from 0% to 30% (w/w of starch; db). Mechanical properties, oxygen permeability (OP), water vapor permeability (WVP), solubility in water and color parameters of composite films were evaluated. The crystallinity and homogeneity between the starch and gums were also evaluated by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The scanning electron micrographs showed homogeneous matrix, with no signs of phase separation between the components...
May 2017: International Journal of Biological Macromolecules
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