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https://www.readbyqxmd.com/read/29031223/enhanced-antibacterial-activity-and-biocompatibility-of-zinc-incorporated-organic-inorganic-nanocomposite-coatings-via-electrophoretic-deposition
#1
Pin Huang, Kena Ma, Xinjie Cai, Dan Huang, Xu Yang, Jiabing Ran, Fushi Wang, Tao Jiang
Increased use of reconstruction procedures in orthopedics has improved the life of patients undergoing surgery. However, surgical site infection remains a major challenge. Efforts were made to fabricate antibacterial surfaces with good biocompatibility. This present study aimed to fabricate zinc-incorporated chitosan/gelatin (CS/G) nanocomposite coatings on the titanium substrates via electrophoretic deposition (EPD). Physicochemical characterization confirmed that zinc was successfully deposited in a metallic oxide/salt complex status...
October 6, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/29031175/parasitic-leiomyoma-a-case-report-with-literature-review
#2
Abdulwahid M Salih, Fahmi H Kakamad, Dahat A H, Imad J Habibullah, Goran M Rauf
INTRODUCTION: Parasitic leiomyoma is an extremely rare variant of uterine leiomyoma occurring outside uterus. The aim of this study is to report a case of parasitic leiomyoma with brief literature report. CASE REPORT: A 46-yearo-old lady presented with upper abdominal heaviness and swelling of about 6year duration. associated with nausea, shortness of breath and palpitation. There was large well defined, mobile, hard mass in epigastric area measuring about 12×10cm...
October 6, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/29031148/fabrication-of-charge-reversible-graphene-oxide-based-nanocomposite-with-multiple-antibacterial-modes-and-magnetic-recyclability
#3
Qiang Li, Chunyan Yong, Weiwei Cao, Xi Wang, Lina Wang, Jie Zhou, Xiaodong Xing
In this work, N-alkylated poly (4-vinylpyridine) (NPVP), a cationic polymer, was firstly applied for the surface modification of Fe3O4 nanoparticles. Then the modified Fe3O4 nanoparticles (Fe3O4@NPVP NPs) combined with graphene oxide (GO) through simple electrostatic binding. Subsequently, deposited Ag nanoparticles (Ag NPs) procedure was carried out to form the multiple antibacterial nanocomposites (GO-Fe3O4@NPVP-Ag). The synthesized nanostructures were well characterized by Transmission Electron Microscope (TEM), X-ray powder diffraction (XRD), Fourier-transform infrared (FT-IR) and Raman spectroscopy...
October 3, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/29031099/shear-wave-elastography-for-characterization-of-breast-lesions-shearlet-transform-and-local-binary-pattern-histogram-techniques
#4
U Rajendra Acharya, Wei Lin Ng, Kartini Rahmat, Vidya K Sudarshan, Joel E W Koh, Jen Hong Tan, Yuki Hagiwara, Arkadiusz Gertych, Farhana Fadzli, Chai Hong Yeong, Kwan Hoong Ng
Shear wave elastography (SWE) examination using ultrasound elastography (USE) is a popular imaging procedure for obtaining elasticity information of breast lesions. Elasticity parameters obtained through SWE can be used as biomarkers that can distinguish malignant breast lesions from benign ones. Furthermore, the elasticity parameters extracted from SWE can speed up the diagnosis and possibly reduce human errors. In this paper, Shearlet transform and local binary pattern histograms (LBPH) are proposed as an original algorithm to differentiate malignant and benign breast lesions...
October 2, 2017: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/29031096/removal-of-metallic-al-and-al-zn-alloys-in-mswi-bottom-ash-by-alkaline-treatment
#5
Dongxing Xuan, Chi Sun Poon
In order to reduce the leaching of pollutants and remove the Al and Zn/Al alloy from municipal solid waste incineration bottom ash (MSWIBA), an optimized alkaline pre-treatment procedure was developed in this study. The influences of alkaline conditions on the removal rate of Al and Zn/Al alloy were investigated, including [OH](-) concentration, temperature, particle size, liquid/solid ratio and treatment duration. The experimental results showed that the optimized alkaline pre-treatment conditions to efficiently remove the Al and Zn/Al alloy was by using a minimum of 1...
October 6, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/29031081/optimization-of-the-promega-powerseq%C3%A2-auto-y-system-for-efficient-integration-within-a-forensic-dna-laboratory
#6
E A Montano, J M Bush, A M Garver, M M Larijani, S M Wiechman, C H Baker, M R Wilson, R A Guerrieri, E A Benzinger, D N Gehres, M L Dickens
The application of massively parallel sequencing (MPS) is growing in the forensic DNA field, as forensic DNA laboratories are continuously seeking methods to gain information from a limited or degraded forensic sample. However, the laborious nature of current MPS methodologies required for successful library preparation and sequencing leave opportunities for improvement to make MPS a practical option for processing forensic casework. In this study, the Promega PowerSeq™ Auto/Y System Prototype, a MPS laboratory workflow that incorporates multiplex amplification, was selected for optimization with the objectives to introduce automation for relieving manual processing, and to reduce the number of steps recommended by the standard protocol...
October 5, 2017: Forensic Science International. Genetics
https://www.readbyqxmd.com/read/29031057/arsenic-speciation-in-fish-and-shellfish-from-the-north-sea-southern-bight-and-a%C3%A3-u-port-area-brazil-and-health-risks-related-to-seafood-consumption
#7
Yue Gao, Paulo Baisch, Nicolai Mirlean, Flavio Manoel Rodrigues da Silva Júnior, Nik Van Larebeke, Willy Baeyens, Martine Leermakers
In North Sea and Port Açu (Brazil) coastal areas, high arsenic (As) concentrations were observed in water, soil and sediments. Therefore, the impact of this contamination on fish and shellfish species bought from local fishermen was studied. Total As was assessed with ICP-OES (Brazil) and ICP-MS (North Sea) after microwave digestion. Toxic As was assessed with liquid chromatography-ICP-MS (Brazil) and hydride generation-atomic fluorescence spectrometry (North Sea). All analytical methods comply with Quality Assurance/Quality Control procedures...
October 7, 2017: Chemosphere
https://www.readbyqxmd.com/read/29031035/-controversy-in-the-postoperative-treatment-of-low-grade-gliomas
#8
T Kazda, R Lakomý, A Poprach, P Pospíšil, R Jančálek, P Šlampa
BACKGROUND: The optimal treatment for low-grade gliomas remains controversial. Neurosurgery, radiotherapy, and chemotherapy are the main treatment options. Despite advances in oncology, there are still a lot of uncertainties, and the optimal sequences, combinations, and timings of these procedures have not yet been optimized. It is still unclear whether temozolomide can replace effective, but toxic PCV chemotherapy (procarbazine, lomustine, vincristine) and whether temozolomide can be used upfront alone instead of radiotherapy alone...
2017: Klinická Onkologie: Casopis Ceské a Slovenské Onkologické Spolecnosti
https://www.readbyqxmd.com/read/29029368/who-accesses-surgery-at-district-level-in-sub-saharan-africa-evidence-from-malawi-and-zambia
#9
Jakub Gajewski, Rachel Dharamshi, Michael Strader, John Kachimba, Eric Borgstein, Gerald Mwapasa, Mweene Cheelo, Tracey McCauley, Leon Bijlmakers, Ruairi Brugha
OBJECTIVES: To examine age and gender distribution for the most common types of surgery in Malawi and Zambia. METHODS: Data were collected from major operating theatres in 8 district hospitals in Malawi and 9 in Zambia. Raw data on surgical procedures were coded by specialist surgeons for frequency analyses. RESULTS: In Malawi, female surgical patients had a mean age of 25 years, with 91% aged 16-40 years. Females accounted for 85%, and obstetric cases for 75%, of all surgical patients...
October 13, 2017: Tropical Medicine & International Health: TM & IH
https://www.readbyqxmd.com/read/29029305/large-scale-automated-sleep-staging
#10
Haoqi Sun, Jian Jia, Balaji Goparaju, Guang-Bin Huang, Olga Sourina, Matt Travis Bianchi, M Brandon Westover
Study Objectives: Automated sleep staging has been previously limited by a combination of clinical and physiological heterogeneity. Both factors are in principle addressable with large data sets that enable robust calibration. However, the impact of sample size remains uncertain. The objectives are to investigate the extent to which machine learning methods can approximate the performance of human scorers when supplied with sufficient training cases and to investigate how staging performance depends on the number of training patients, contextual information, model complexity, and imbalance between sleep stage proportions...
September 26, 2017: Sleep
https://www.readbyqxmd.com/read/29029295/probabilistic-distances-between-trees
#11
Maryam Garba, Tom M W Nye, Richard J Boys
Most existing measures of distance between phylogenetic trees are based on the geometry or topology of the trees. Instead, we consider distance measures which are based on the underlying probability distributions on genetic sequence data induced by trees. Monte Carlo schemes are necessary to calculate these distances approximately, and we describe efficient sampling procedures. Key features of the distances are the ability to include substitution model parameters and to handle trees with different taxon sets in a principled way...
October 4, 2017: Systematic Biology
https://www.readbyqxmd.com/read/29029292/minimizing-retraction-by-pia-arachnoidal-10-0-sutures-in-intrasulcal-dissection
#12
Kutluay Uluc, Ulas Cikla, Deniz B Morkan, Alperen Sirin, Azam S Ahmed, Kyle Swanson, Mustafa K Baskaya
BACKGROUND: In contemporary microneurosurgery reducing retraction-induced injury to the brain is essential. Self-retaining retractor systems are commonly used to improve visualization and decrease the repetitive microtrauma, but sometimes self-retaining retractor systems can be cumbersome and the force applied can cause focal ischemia or contusions. This may increase the morbidity and mortality. Here, we describe a technique of retraction using 10-0 sutures in the arachnoid. OBJECTIVE: To evaluate the imaging and clinical results in patients where 10-0 suture retraction was used to aid the surgical procedure...
September 19, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/29029289/post-traumatic-hydrocephalus-in-children-a-retrospective-study-in-42-pediatric-hospitals-using-the-pediatric-health-information-system
#13
Robert H Bonow, Assaf P Oron, Brian W Hanak, Samuel R Browd, Randall M Chesnut, Richard G Ellenbogen, Monica S Vavilala, Frederick P Rivara
BACKGROUND: Post-traumatic hydrocephalus (PTH) is a potentially treatable cause of poor recovery from traumatic brain injury (TBI) that remains poorly understood, particularly among children. OBJECTIVE: To better understand the risk factors for pediatric PTH using a large, multi-institutional database. METHODS: We conducted a retrospective cohort study using administrative data from 42 pediatric hospitals participating in the Pediatric Health Information System...
October 6, 2017: Neurosurgery
https://www.readbyqxmd.com/read/29029275/surgical-management-of-intrinsic-tumors-of-the-facial-nerve
#14
Sampath Chandra Prasad, Melissa Laus, Manjunath Dandinarasaiah, Enrico Piccirillo, Alessandra Russo, Abdelkader Taibah, Mario Sanna
BACKGROUND: Intrinsic tumors of the facial nerve are a rare entity. Dealing with this subset of tumors is challenging both in terms of decision making and surgical intervention. OBJECTIVE: To review the outcomes of surgical management of facial nerve tumors and cable nerve graft interpositioning. METHODS: A retrospective analysis was performed at a referral center for skull base pathology. One hundred fifteen patients who were surgically treated for facial nerve tumors were included...
September 29, 2017: Neurosurgery
https://www.readbyqxmd.com/read/29029228/development-of-a-whole-task-simulator-for-carotid-endarterectomy
#15
Gabrielle Santangelo, Doran Mix, Ahmed Ghazi, Michael Stoner, G Edward Vates, Jonathan J Stone
BACKGROUND: Surgical education relies on operative exposure with live patients. Carotid endarterectomy (CEA) demands an experienced surgeon with a very low complication rate. The high-risk nature of this procedure and the decline in number of CEAs performed annually has created a gap in residency training. OBJECTIVE: To develop a high-fidelity whole-task simulation for CEA that demonstrates content, construct, and face validity. METHODS: Anatomically accurate models of the human neck were created using multilayered poly-vinyl alcohol hydrogels...
September 27, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/29029213/recovery-kinetics-of-radiographic-and-implant-related-revision-patients-following-adult-spinal-deformity-surgery
#16
Peter G Passias, Cyrus M Jalai, Virginie Lafage, Gregory W Poorman, Shaleen Vira, Samantha R Horn, Justin K Scheer, D Kojo Hamilton, Breton G Line, Shay Bess, Frank J Schwab, Christopher P Ames, Douglas C Burton, Robert A Hart, Eric O Klineberg
BACKGROUND: Prior studies have observed similar health-related quality of life (HRQL) in revisions and nonrevision (NR) patients following adult spinal deformity (ASD) correction. However, a novel comparison approach may allow better comparisons in spine outcomes groups. OBJECTIVE: To determine if ASD revisions for radiographic and implant-related complications undergo a different recovery than NR patients. METHODS: Inclusion: ASD patients with complete HRQL (Oswestry Disability Index, Short-Form-36 version 2 (SF-36), Scoliosis Research Society [SRS]-22) at baseline, 6 wk, 1 yr, 2 yr...
October 6, 2017: Neurosurgery
https://www.readbyqxmd.com/read/29029182/overlapping-surgeries-are-not-associated-with-worse-patient-outcomes-retrospective-multivariate-analysis-of-14-872-neurosurgical-cases-performed-at-a-single-institution
#17
Michael A Bohl, Michael A Mooney, John P Sheehy, Abigail M Cantwell, Steve W Chang, Kristina M Chapple, U Kumar Kakarla, Robert F Spetzler
BACKGROUND: Overlapping surgeries have recently become a controversial topic. OBJECTIVE: To evaluate the effect of overlapping surgeries on patient outcomes. METHODS: A retrospective analysis of all neurosurgical procedures performed at a single institution from July 2013 to May 2016 was conducted. Variables extracted from the electronic medical records included sex, age, procedure type, resident years of training, evening case, emergency case, American Society of Anesthesiologists Physical Status Score, illness severity, mortality risk, and percentage of case overlap...
September 27, 2017: Neurosurgery
https://www.readbyqxmd.com/read/29029178/expansion-of-viral-load-testing-and-the-potential-impact-on-human-immunodeficiency-virus-drug-resistance
#18
Helen M Chun, Yaa F Obeng-Aduasare, Laura N Broyles, Dennis Ellenberger
Increasing the volume, strengthening the quality, and proactively using data of human immunodeficiency virus (HIV) load testing are pivotal to limiting the threat of HIV drug resistance (HIVDR) accumulation,and allow for optimal case-based HIVDR surveillance. Triangulation of viral load (VL) and HIVDR testing data could be pursued to answer key questions and translate data and results for program and public policy. Identification of virologic failure and early management mitigates the greater risk of HIVDR...
October 5, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/29029177/influence-of-traditional-management-and-environmental-variables-on-mediterranean-saproxylic-beetle-assemblages
#19
P Ramilo, A P Martínez-Falcón, A García-López, H Brustel, E Galante, E Micó
Mediterranean oak forests of the Iberian Peninsula host a great diversity of saproxylic beetles. For centuries, humans have carried out traditional management practices in this area, at both habitat and tree level, causing changes in forest structure. The aim of this study was to evaluate the anthropic effect of these traditional practices on saproxylic beetle diversity by measuring a set of environmental variables related to forest structure at both plot and tree level. Fauna was collected using window traps over a period of 12 mo...
September 23, 2017: Environmental Entomology
https://www.readbyqxmd.com/read/29029174/statistical-package-for-growth-rates-made-easy
#20
Portia Mira, Miriam Barlow, Juan C Meza, Barry G Hall
Growth rates are an important tool in microbiology because they provide high throughput fitness measurements. The release of GrowthRates, a program that uses the output of plate reader files to automatically calculate growth rates, has facilitated experimental procedures in many areas. However, many sources of variation within replicate growth rate data exist and can decrease data reliability. We have developed a new statistical package, CompareGrowthRates (CGR), to enhance the program GrowthRates and accurately measure variation in growth rate datasets...
September 26, 2017: Molecular Biology and Evolution
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