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https://www.readbyqxmd.com/read/29785669/characterization-of-an-aryl-alcohol-oxidase-from-the-plant-saprophytic-basidiomycete-coprinopsis-cinerea-with-broad-substrate-specificity-against-aromatic-alcohols
#1
Yoshiaki Tamaru, Kiwamu Umezawa, Makoto Yoshida
OBJECTIVES: The aim of the study was to obtain information about the enzymatic properties of aryl-alcohol oxidase from the plant saprophytic basidiomycete Coprinopsis cinerea (rCcAAO), which is classified into the auxiliary activities family 3 subfamily 2 (AA3_2). RESULTS: The gene encoding AAO from the plant saprophytic basidiomycete Coprinopsis cinerea (CcAAO) was cloned, and the recombinant CcAAO (rCcAAO) was heterologously expressed in the methylotrophic yeast Pichia pastoris...
May 22, 2018: Biotechnology Letters
https://www.readbyqxmd.com/read/29783697/three-dimensional-bi%C3%A2-te%C3%A2-networks-of-interconnected-nanowires-synthesis-and-optimization
#2
Alejandra Ruiz-Clavijo, Olga Caballero-Calero, Marisol Martín-González
Self-standing Bi₂Te₃ networks of interconnected nanowires were fabricated in three-dimensional porous anodic alumina templates (3D⁻AAO) with a porous structure spreading in all three spatial dimensions. Pulsed electrodeposition parameters were optimized to grow highly oriented Bi₂Te₃ interconnected nanowires with stoichiometric composition inside those 3D⁻AAO templates. The nanowire networks were analyzed by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDX), and Raman spectroscopy...
May 18, 2018: Nanomaterials
https://www.readbyqxmd.com/read/29781445/enhanced-room-temperature-gas-sensing-of-aligned-mn3o4-nanorods-assemblies-functionalized-by-aluminum-anodic-membranes
#3
Neetha Rachel John, Paulose Thomas, Divya K V, Abraham K E
The study signifies a conductometric chemical sensor design using aligned Mn3O4 nanorods. Nanostructuring is an emerging field of prominence due to its capacity to introduce unprecedented properties in materials with potential applications. Hydrothermally prepared in situ Mn3O4 sample appears in urchin rod like morphology which changes to spherical shape on annealing. An aluminum anodic membrane/template (AAO) is used for the growth of the nanorods and also as a medium to support the sensor. Aligned Mn3O4nanorods are formed in the pores of AAO by vacuum infiltration approach which is later on annealed...
May 21, 2018: Nanotechnology
https://www.readbyqxmd.com/read/29778849/influence-of-aortic-dilation-on-the-regional-aortic-stiffness-of-bicuspid-aortic-valve-assessed-by-4-dimensional-flow-cardiac-magnetic-resonance-comparison-with-marfan-syndrome-and-degenerative-aortic-aneurysm
#4
Andrea Guala, Jose Rodriguez-Palomares, Lydia Dux-Santoy, Gisela Teixido-Tura, Giuliana Maldonado, Laura Galian, Marina Huguet, Filipa Valente, Laura Gutiérrez, Teresa González-Alujas, Kevin M Johnson, Oliver Wieben, Augusto Sao Avilés, David Garcia-Dorado, Arturo Evangelista
OBJECTIVES: This study sought to ascertain whether patients with a bicuspid aortic valve (BAV) have an intrinsic alteration in regional aortic stiffness compared with patients with tricuspid aortic valve (TAV) and Marfan syndrome (MFS) patients with similar aortic sizes, as well as to assess the influence of ascending aorta (AAo) dilation on regional stiffness parameters in BAV patients. BACKGROUND: Imaging biomarkers as predictors of BAV, MFS, and degenerative AAo aneurysms in TAV patients (DA-TAV) are lacking...
May 11, 2018: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/29778494/povidone-iodine-concentration-and-dosing-in-cataract-surgery
#5
REVIEW
Jagger C Koerner, Mary J George, Dale R Meyer, Michael G Rosco, Matthew M Habib
Iodine has been recognized as an effective bactericide since the 1800's, and povidone-iodine (PI) solution has been applied to the ocular surface and periocular skin since the 1980's to prevent endophthalmitis in cataract surgery. In vitro, PI solution kills bacteria very quickly at dilute concentrations (0.05-1.0%). In many instances, PI kills bacteria more quickly at these dilute concentrations than more conventional (5%-10%) concentrations. This is due to greater availability of diatomic free iodine in dilute solution, the bactericidal component of PI...
May 17, 2018: Survey of Ophthalmology
https://www.readbyqxmd.com/read/29765194/somatotype-the-risk-of-hydroxychloroquine-retinopathy-and-safe-daily-dosing-guidelines
#6
David J Browning, Chong Lee
Purpose: The aim of this study was to determine whether somatotype influences the risk of hydroxychloroquine (HC) retinopathy (HCR) and whether dosing by real body weight (RBW), ideal body weight (IBW), or the lesser of these better predicts the risk of HCR. Patients and methods: A total of 565 patients taking HC for whom height and weight were recorded and a sensitive ancillary testing modality was used including 10-2 visual fields, spectral domain optical coherence tomography, fundus autofluorescence imaging, and multifocal electroretinography were enrolled...
2018: Clinical Ophthalmology
https://www.readbyqxmd.com/read/29762277/impact-of-clinical-practice-guidelines-on-use-of-intra-articular-hyaluronic-acid-and-corticosteroid-injections-for-knee-osteoarthritis
#7
Nicholas A Bedard, David E DeMik, Natalie A Glass, Robert A Burnett, Kevin J Bozic, John J Callaghan
BACKGROUND: The efficacy of corticosteroid and hyaluronic acid injections for knee osteoarthritis has been questioned. The purpose of this study was to determine the impact of the American Academy of Orthopaedic Surgeons (AAOS) clinical practice guidelines on the use of these injections in the United States and determine if utilization differed by provider specialty. METHODS: Patients with knee osteoarthritis were identified within the Humana database from 2007 to 2015, and the percentage of patients receiving a knee injection relative to the number of patients having an encounter for knee osteoarthritis was calculated and was trended for the study period...
May 16, 2018: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/29754052/detection-of-parp-1-activity-based-on-hyperbranched-poly-adp-ribose-polymers-responsive-current-in-artificial-nanochannels
#8
Yong Liu, Jiahui Fan, Haitang Yang, Ensheng Xu, Wei Wei, Yuanjian Zhang, Songqin Liu
The cellular enzyme poly ADP (ADP: adenosine diphosphate)-ribose polymerase-1 (PARP-1) plays key roles in DNA repair. Its activity is closely related to various cancer developments. Detection of PARP-1 activity is significant, however, it is relatively difficult since it lacks superiority property that can be used to detect conveniently. PARP-1 lead to the synthesis of hyperbranched poly (ADP-ribose) polymers (PAR) using nicotinamide adenine dinucleotide (NAD+ ) as substrate during DNA damage repairing. In this paper, we found that hyper-branched PAR increased the steric hindrance and reduced the flux of probe ions effectively in anodic aluminum oxide (AAO) nanochannels...
May 4, 2018: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/29748449/risk-factors-of-tympanoplasties-in-long-term-observation
#9
Joanna Janiak-Kiszka, Wojciech Kaźmierczak, Kinga Lewandowska, Mateusz Grabowski, Henryk Kaźmierczak, Łukasz Kluczyński
OBJECTIVES: The aim of the study was to evaluate risk factors influencing the results of tympanoplasties on the base of material taken from the Department of Otolaryngology and Laryngological Oncology Collegium Medicum of Nicolaus Copernicus University in Bydgoszcz between 2004-2009. In this period 98 operations were done. The time from operation to hearing examination was 3 to 7 years, mean 5,43. Tympanoplastic operation were divided according to Tos classification. Measuring hearing results, tonal audiometry was done and mean air bone gap on four frequencies was assesed (500, 1000, 2000, 3000 Hz), according to AAO-HNS guidelines (1995)...
April 30, 2018: Otolaryngologia Polska
https://www.readbyqxmd.com/read/29734127/secular-trends-in-the-age-at-onset-of-bipolar-i-disorder-support-for-birth-cohort-effects-from-interational-multi-centre-clinical-observational-studies
#10
J Scott, B Etain, J M Azorin, F Bellivier
OBJECTIVE: To examine any association of birth decade, sex and exposure to alcohol and/or substance use disorders (ASUD) with age at onset (AAO) of bipolar I disorder (BD-I). METHODS: Using data from a representative clinical sample of 3896 BD-I cases recruited from 14 European countries, we examined AAO distributions in individuals born in consecutive birth decades. Cumulative probabilities with Mantel-Cox log-rank tests, pairwise comparisons and Odds Ratios (OR) with 95% confidence intervals (95% CI) were employed to analyze AAO according to birth decade, sex, and presence or absence of an ASUD...
May 4, 2018: European Psychiatry: the Journal of the Association of European Psychiatrists
https://www.readbyqxmd.com/read/29732493/-knee-osteoarthritis-and-current-research-for-evidence-are-we-on-the-right-way
#11
Jared Scott, Jake Xavier Checketts, Jarryd G Horn, Craig Cooper, Matt Vassar
PURPOSE: An estimated 85% of research is of limited value or wasted because the wrong research questions are addressed. We sought to identify research gaps using American Academy of Orthopaedic Surgeon (AAOS) clinical practice guidelines Treatment of Osteoarthritis of the Knee and Surgical Management of Osteoarthritis of the Knee. Using these recommendations, we conducted searches of ClinicalTrials.gov to discover the extent to which new and ongoing research addresses areas of deficiency...
May 7, 2018: International Orthopaedics
https://www.readbyqxmd.com/read/29722294/gold-nanochestnut-arrays-as-ultra-sensitive-sers-substrate-for-detecting-trace-pesticide-residue
#12
Fei Geng, Huaping Zhao, Qun Fu, Yan Mi, Likun Miao, Wei Li, Yulian Dong, Minghong Wu, Yong Lei
Surface-enhanced Raman spectroscopy (SERS) enables the rapid identification and detection of trace pesticide residues presented in trace amounts in the environment and foods. Herein, a facile approach to fabricate unique gold nanochestnuts (GNCs) as ultra-sensitive SERS substrate for detecting trace pesticide residues has been developed based on anodic aluminum oxide (AAO) templates. Gold GNCs are synthesized through galvanic replacement of silver on the top of nickel nanorod arrays. The as-prepared GNCs have well controlled structural parameters and importantly with unique anisotropic morphologies, benefiting to the enhancement in SERS performance...
May 3, 2018: Nanotechnology
https://www.readbyqxmd.com/read/29707970/orthopaedic-in-training-examination-resources-and-residency-training-for-the-foot-and-ankle-domain
#13
Cory F Janney, Daniel Kunzler, Pejma Shazadeh Safavi, Vinod Panchbhavi
BACKGROUND: Residency programs use the annual Orthopaedic In-Training Examination (OITE) prepared by the American Academy of Orthopaedic Surgeons (AAOS) to monitor resident progress and prepare them for the part 1 of the American Board of Orthopaedic Surgeons (ABOS) Certifying Examination. The purpose of this study was to determine resources residents currently use to prepare for the OITE and also to learn about their perception of training they receive in the foot and ankle subspecialty in their program and their interest in foot and ankle fellowship after residency...
April 1, 2018: Foot & Ankle Specialist
https://www.readbyqxmd.com/read/29703979/structural-defects-in-a-nanomesh-of-bulk-mos-2-using-an-anodic-aluminum-oxide-template-for-photoluminescence-efficiency-enhancement
#14
TaeWan Kim, DongHwan Kim, Chan Ho Choi, DaeHwa Joung, JongHoo Park, Jae Cheol Shin, Sang-Woo Kang
Two-dimensional (2D) materials beyond graphene have attracted considerable interest because of the zero bandgap drawbacks of graphene. Transition metal dichalcogenides (TMDs), such as MoS2 and WSe2 , are the potential candidates for next 2D materials because atomically thin layers of TMDs exhibit unique and versatile electrical and optical properties. Although bulk TMDs materials have an indirect bandgap, an indirect-to-direct bandgap transition is observed in monolayers of TMDs (MoS2 , WSe2 , and MoSe2 ). Optical properties of TMD films can be improved by the introduction of structural defects...
April 27, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29702972/microsurgery-for-patients-diagnosed-with-neurofibromatosis-type-2-complicated-by-vestibular-schwannomas-clinical-experience-and-strategy-for-treatments
#15
Li-Hua Chen, Hong-Tian Zhang, Ru-Xiang Xu, Li Zhang, Wen-De Li, Kai Sun
Most patients diagnosed with neurofibromatosis type 2 (NF2) have bilateral vestibular schwannomas (VS). Through reviewing surgical method and clinical outcomes, we tried to find out a strategy for treatments in NF2 patients with VS.We retrospectively reviewed patients diagnosed pathological NF2 and have had microsurgery (MS) for VS in the PLA Army General Hospital. Seventeen patients were included from January 2000 to December 2016. Fifteen patients had progressive hearing impairment, and 7 ears were totally deaf...
April 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29695249/aortic-flow-patterns-and-wall-shear-stress-maps-by-4d-flow-cardiovascular-magnetic-resonance-in-the-assessment-of-aortic-dilatation-in-bicuspid-aortic-valve-disease
#16
José Fernando Rodríguez-Palomares, Lydia Dux-Santoy, Andrea Guala, Raquel Kale, Giuliana Maldonado, Gisela Teixidó-Turà, Laura Galian, Marina Huguet, Filipa Valente, Laura Gutiérrez, Teresa González-Alujas, Kevin M Johnson, Oliver Wieben, David García-Dorado, Arturo Evangelista
BACKGROUND: In patients with bicuspid valve (BAV), ascending aorta (AAo) dilatation may be caused by altered flow patterns and wall shear stress (WSS). These differences may explain different aortic dilatation morphotypes. Using 4D-flow cardiovascular magnetic resonance (CMR), we aimed to analyze differences in flow patterns and regional axial and circumferential WSS maps between BAV phenotypes and their correlation with ascending aorta dilatation morphotype. METHODS: One hundred and one BAV patients (aortic diameter ≤ 45 mm, no severe valvular disease) and 20 healthy subjects were studied by 4D-flow CMR...
April 26, 2018: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/29657754/the-effect-of-ethylene-glycol-on-pore-arrangement-of-anodic-aluminium-oxide-prepared-by-hard-anodization
#17
Yang Guo, Li Zhang, Mangui Han, Xin Wang, Jianliang Xie, Longjiang Deng
The influence of the addition of ethylene glycol (EG) on the pore self-ordering process in anodic aluminium oxide (AAO) membranes prepared by hard anodization (HA) was investigated. It was illustrated that EG has a substantial effect on the pore arrangement of AAO, and it was found that a smaller pore size can be obtained with an EG concentration reaching 20 wt% in aqueous electrolyte. The number of estimated defects of AAO increases significantly with an increase in EG concentration to 50 wt%. Excellent ordering of pores was realized when the samples were anodized in the 30 wt%-EG-containing aqueous electrolyte...
March 2018: Royal Society Open Science
https://www.readbyqxmd.com/read/29655736/the-molecularly-imprinted-polymer-supported-by-anodic-alumina-oxide-nanotubes-membrane-for-efficient-recognition-of-chloropropanols-in-vegetable-oils
#18
Xiuzhen Qiu, Xian-Yan Xu, Yong Liang, Huishi Guo
A new route to synthesize a covalent interaction-based molecularly imprinted polymer (MIP) material for 3-chloro-1,2-propanediol (3-MCPD) inside the nanopores of anodic alumina oxide (AAO) is presented. A series of adsorption experiments showed MIP had good extraction capacity and selectivity for 3-MCPD. In order to evaluate the usability of the MIP nanotubes membrane, a method combining AAO@MIP membrane extraction with gas chromatography - mass spectrometry (GC-MS) detection was developed for determination of chloropropanols...
August 30, 2018: Food Chemistry
https://www.readbyqxmd.com/read/29655357/soft-phonon-modes-driven-huge-difference-on-lattice-thermal-conductivity-between-topological-semimetal-wc-and-wn
#19
San-Dong Guo, Peng Chen
Topological semimetals are currently attracting increasing interest due to their potential applications in topological qubits and low-power electronics, which are closely related to their thermal transport properties. Recently, the triply degenerate nodal points near the Fermi level of WC are observed by using angle-resolved photoemission spectroscopy. In this work, by solving the Boltzmann transport equation based on first-principles calculations, we systematically investigate the phonon transport properties of topological semimetals WC and WN...
April 14, 2018: Journal of Chemical Physics
https://www.readbyqxmd.com/read/29621052/aaos-appropriate-use-criteria-surgical-management-of-osteoarthritis-of-the-knee
#20
Paul A Manner, Creighton C Tubb, Brett R Levine
No abstract text is available yet for this article.
May 1, 2018: Journal of the American Academy of Orthopaedic Surgeons
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