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https://www.readbyqxmd.com/read/28922982/porcine-mesothelium-wrapped-diced-cartilage-grafts-for-nasal-reconstruction
#1
Athanasios Bramos, David P Perrault, Alexander N Fedenko, Gene H Kim, Sofia Bougioukli, Jay R Lieberman, Jay W Calvert, Alex Wong
<b>Background:</b> Fascia wrapped diced cartilage grafts have become a useful tool in modern rhinoplasty surgery. Unfortunately, fascial harvest is associated with donor site morbidity, therefore a non-autologous alternative to fascia would be ideal. Decellularized porcine mesothelium, Meso BioMatrix<sup>TM</sup>, is an acellular scaffold that could potentially fill this need. To determine if porcine mesothelium could serve as an acceptable alternative, we histologically compared diced cartilage grafts wrapped in fascia versus porcine mesothelium...
September 19, 2017: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/28892260/synthetic-poly-vinylalcohol-based-membranes-for-cartilage-surgery-and-repair
#2
Benjamin C U Tai, Chan Du, Shujun Gao, Andrew C A Wan
Cell-based therapies for cartilage repair are continually being developed to treat osteoarthritis. The cells are either introduced directly by intra-articular injection or via a cell-seeded matrix scaffold. Here, we developed poly(vinylalcohol)-based membranes to be used for mesenchymal stem cell implantation in cartilage repair procedures, having controllable physicochemical properties such as porosity, mechanical strength and permeability, and a unique self-sealing property. The membranes possess a bilayer structure with a less porous layer providing mechanical strength and selective permeability, exhibit an elastic modulus of between 0...
September 11, 2017: Biotechnology Journal
https://www.readbyqxmd.com/read/28877098/a-3-dimensional-printed-ultrasound-probe-visuospatial-trainer
#3
Ryan T McKenna, Jesse C Dove, Robert A Ratzlaff, Jose L Diaz-Gomez, Daniel J Cox, Leslie V Simon
Training adult learners to use ultrasound in clinical practice relies on the ability of the learner to apply visuospatial concepts to the anatomy of the human body. We describe a visuospatial trainer that replicates the housing of an ultrasound transducer, through which a linear laser projects light in the same plane and orientation as the ultrasonic sound waves. We use this trainer in combination with a porcine heart dissection laboratory to teach bedside cardiac ultrasound and transthoracic echocardiography (TTE)...
September 4, 2017: Ultrasound Quarterly
https://www.readbyqxmd.com/read/28867856/physicochemical-screening-and-shelf-life-evaluation-of-ku%C3%A1-kum%C3%A4-di-gh%C3%A1-ta-prepared-using-kesara-and-n%C3%A4-gakesara
#4
Pradeep Kumar Prajapati, Rohit Sharma, Amee Amrutia, B J Patgiri
INTRODUCTION: Kuṅkumādi Ghṛta (KG) is an Ayurvedic formulation commonly recommended in skin disorders, especially Mukhadūṣikā (Acne vulgaris). Kesara (stigma of Crocus sativus Linn.) is a prime ingredient in the formulation. However, due to high cost and increased adulteration in Kesara, 'Nāgakesara' (Mesua ferrea Linn.) is suggested by Ayurvedic experts as a substitute. Nāgakesara is relatively lower in cost and possesses similar therapeutic attributes to that of Kesara. Recent studies have established standard manufacturing procedures and clinical efficacies of Kesarayukta (with Kesara) Kuṅkumādi Ghṛta (KKG) and Nāgakesara yukta (with Nāgakesara) Kuṅkumādi Ghṛta (NKG) in Mukhadūṣikā...
January 2017: Ancient Science of Life
https://www.readbyqxmd.com/read/28813964/brain-computer-interface-combining-eye-saccade-two-electrode-eeg-signals-and-voice-cues-to-improve-the-maneuverability-of-wheelchair
#5
Ker-Jiun Wang, Lan Zhang, Bo Luan, Hsiao-Wei Tung, Quanfeng Liu, Jiacheng Wei, Mingui Sun, Zhi-Hong Mao
Brain-computer interfaces (BCIs) largely augment human capabilities by translating brain wave signals into feasible commands to operate external devices. However, many issues face the development of BCIs such as the low classification accuracy of brain signals and the tedious human-learning procedures. To solve these problems, we propose to use signals associated with eye saccades and blinks to control a BCI interface. By extracting existing physiological eye signals, the user does not need to adapt his/her brain waves to the device...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28798717/identifying-features-of-bodily-expression-as-indicators-of-emotional-experience-during-multimedia-learning
#6
Valentin Riemer, Julian Frommel, Georg Layher, Heiko Neumann, Claudia Schrader
The importance of emotions experienced by learners during their interaction with multimedia learning systems, such as serious games, underscores the need to identify sources of information that allow the recognition of learners' emotional experience without interrupting the learning process. Bodily expression is gaining in attention as one of these sources of information. However, to date, the question of how bodily expression can convey different emotions has largely been addressed in research relying on acted emotion displays...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28768579/untargeted-metabolomics-of-fresh-and-heat-treatment-tiger-nut-cyperus-esculentus-l-milks-reveals-further-insight-into-food-quality-and-nutrition
#7
Josep Rubert, Andoni Monforte, Kamila Hurkova, Gaspar Pérez-Martínez, Jesús Blesa, José L Navarro, Milena Stranka, José Miguel Soriano, Jana Hajslova
Tiger nut (Cyperus esculentus L.) is a crop traditionally grown in Valencia Region (Spain) and other temperate and tropical regions in the world, where its tubers are commonly consumed as tiger nut milk (horchata). Because of their nutritive potential and original taste, these products are beginning to spread internationally and, as consequence, analytical procedures to assess nutritional profiles, quality control issues are acquiring increasing relevance. The main objective of this study was to use an advance analytical method and chemometrics tools to determine if the ultra-high temperature (UHT) treatment necessary to extend the shelf life of tiger nut milk would affect the profile of nutrients when compared to fresh product...
July 23, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/28767285/listeria-monocytogenes-in-food-processing-facilities-food-contamination-and-human-listeriosis-the-brazilian-scenario
#8
Anderson Carlos Camargo, Joshua John Woodward, Douglas Ruben Call, Luís Augusto Nero
Listeria monocytogenes is a foodborne pathogen that contaminates food-processing environments and persists within biofilms on equipment, utensils, floors, and drains, ultimately reaching final products by cross-contamination. This pathogen grows even under high salt conditions or refrigeration temperatures, remaining viable in various food products until the end of their shelf life. While the estimated incidence of listeriosis is lower than other enteric illnesses, infections caused by L. monocytogenes are more likely to lead to hospitalizations and fatalities...
August 2, 2017: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/28756627/pathogen-reduced-platelets-for-the-prevention-of-bleeding
#9
REVIEW
Lise J Estcourt, Reem Malouf, Sally Hopewell, Marialena Trivella, Carolyn Doree, Simon J Stanworth, Michael F Murphy
BACKGROUND: Platelet transfusions are used to prevent and treat bleeding in people who are thrombocytopenic. Despite improvements in donor screening and laboratory testing, a small risk of viral, bacterial, or protozoal contamination of platelets remains. There is also an ongoing risk from newly emerging blood transfusion-transmitted infections for which laboratory tests may not be available at the time of initial outbreak.One solution to reduce the risk of blood transfusion-transmitted infections from platelet transfusion is photochemical pathogen reduction, in which pathogens are either inactivated or significantly depleted in number, thereby reducing the chance of transmission...
July 30, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28739468/back-table-surgeon-modification-of-a-t-branch
#10
M Scheerbaum, T Kölbel, F Rohlffs, F Heidemann, E S Debus, N Tsilimparis
PURPOSE: Surgeon-modification of commercially available aortic stent grafts represents a salvage option to treat complex aortic pathologies in high-risk patients. TECHNIQUE: A 68-year old male was referred in our hospital with a contained rupture of the visceral aorta. The patient was previously treated with an infrarenal tube graft 16 years earlier as well as with a Crawford procedure with island patch of the coeliac trunk (TC) and the superior mesenteric artery (SMA) and bypasses to both renal arteries 6 years prior to admission...
July 21, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28734626/staged-treatment-of-mega-aortic-syndrome-using-the-frozen-elephant-trunk-and-hybrid-thoracoabdominal-repair
#11
Asimakis Gkremoutis, Andreas Zierer, Thomas Schmitz-Rixen, Ali El-Sayed Ahmad, Erhard Kaiser, Michael Keese, Thomas Schmandra
OBJECTIVE: We report our experience with a staged hybrid approach for the treatment of extended aortic disease, also known as "mega aortic syndrome." METHODS: A total of 15 patients (10 male, 5 female) underwent staged repair of the thoracoabdominal aorta, consisting of 3 separate stages (repair of ascending aorta and aortic arch using the frozen elephant trunk technique and hybrid thoracoabdominal repair with debranching of the renovisceral branches and stent graft implantation)...
June 24, 2017: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28715764/ddt-related-compounds-as-non-extractable-residues-in-submarine-sediments-of-the-palos-verdes-shelf-california-usa
#12
S Kucher, J Schwarzbauer
The Palos Verdes Shelf (PVS) and the continental slope off the Palos Verdes Peninsula are highly contaminated by degradation products of the pesticide DDT (1-chloro-4-[2,2,2-trichloro-1-(4-chlorophenyl)ethyl]benzene). Sediment samples from two box cores were analyzed to obtain further information about the fate of DDT and its degradation products within the environment. After solvent extraction, an alkaline hydrolysis procedure was applied. A comprehensive screening for 26 DDT compounds revealed that DDT and its degradates contaminate not only the extractable fraction but also the fraction released by alkaline hydrolysis...
October 2017: Chemosphere
https://www.readbyqxmd.com/read/28715219/synthesis-of-aromatic-thiolate-protected-gold-nanomolecules-by-core-conversion-the-case-of-au36-sph-tbu-24
#13
Shevanuja Theivendran, Amala Dass
Ultrasmall nanomolecules (<2 nm) such as Au25(SCH2CH2Ph)18, Au38(SCH2CH2Ph)24, and Au144(SCH2CH2Ph)60 are well studied and can be prepared using established synthetic procedures. No such synthetic protocols that result in high yield products from commercially available starting materials exist for Au36(SPh-X)24. Here, we report a synthetic procedure for the large-scale synthesis of highly stable Au36(SPh-X)24 with a yield of ∼42%. Au36(SPh-X)24 was conveniently synthesized by using tert-butylbenzenethiol (HSPh-tBu, TBBT) as the ligand, giving a more stable product with better shelf life and higher yield than previously reported for making Au36(SPh)24 from thiophenol (PhSH)...
July 17, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28706751/development-and-implementation-of-a-coagulation-factor-testing-method-utilizing-autoverification-in-a-high-volume-clinical-reference-laboratory-environment
#14
Paul W Riley, Benoit Gallea, Andre Valcour
BACKGROUND: Testing coagulation factor activities requires that multiple dilutions be assayed and analyzed to produce a single result. The slope of the line created by plotting measured factor concentration against sample dilution is evaluated to discern the presence of inhibitors giving rise to nonparallelism. Moreover, samples producing results on initial dilution falling outside the analytic measurement range of the assay must be tested at additional dilutions to produce reportable results...
2017: Journal of Pathology Informatics
https://www.readbyqxmd.com/read/28693048/the-use-of-branched-endografts-for-the-aortic-arch-in-the-endovascular-era
#15
Rami O Tadros, Scott R Safir, Peter L Faries, Daniel K Han, Rajiv K Chander, Cherrie Z Abraham, Michael L Marin, Allan S Stewart
The endovascular realm has steadily increased its footing in the treatment of the aorta and all of its territories since the foundational case in 1990 by Parodi. The aortic arch, however, continues to be one of the last bastions for treatment via open surgery, which remains the gold standard. Significant comorbidity and prior cardiac surgery prevent open surgery from being the only preferred option, allowing novel endovascular procedures to be considered. Since 1999, more advanced endovascular systems have been created by companies such as Cook Medical, Bolton Medical, Medtronic, Endospan, Gore Medical, and, recently, Kawasumi...
July 25, 2017: Surgical Technology International
https://www.readbyqxmd.com/read/28675480/omics-approaches-on-fresh-cut-lettuce-reveal-global-molecular-responses-to-sodium-hypochlorite-and-peracetic-acid-treatment
#16
Loretta Daddiego, Linda Bianco, Cristina Capodicasa, Fabrizio Carbone, Claudia Dalmastri, Lorenza Daroda, Antonella Del Fiore, Patrizia De Rossi, Mariasole Di Carli, Marcello Donini, Loredana Lopez, Alessio Mengoni, Patrizia Paganin, Gaetano Perrotta, Annamaria Bevivino
BACKGROUND: Lettuce is a leafy vegetables that are extensively commercialized as ready-to-eat product because of its widespread use in human nutrition as salad. It is well-known that washing treatments can severely affect the quality and shelf-life of ready-to-eat vegetables. The study presented here evaluated the effect of two washing procedures on fresh-cut lettuce during storage. RESULTS: We applied omics approach to reveal global changes at the molecular level induced by peracetic acid washing in comparison with sodium hypochlorite treatment...
July 4, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28674697/cell-free-vascular-grafts-recent-developments-and-clinical-potential
#17
Sindhu Row, Ana Santandreu, Daniel D Swartz, Stelios T Andreadis
Recent advances in vascular tissue engineering have led to the development of cell-free grafts that are available off-the-shelf for on demand surgery. Challenges associated with cell-based technologies including cell sourcing, cell expansion and long-term bioreactor culture motivated the development of completely cell-free vascular grafts. These are based on decellularized arteries, decellularized cultured cell-based tissue engineered grafts or biomaterials functionalized with biological signals that promote in situ tissue regeneration...
March 2017: Technology
https://www.readbyqxmd.com/read/28667900/improving-in%C3%A2-vivo-outcomes-of-decellularized-vascular-grafts-via-incorporation-of-a-novel-extracellular-matrix
#18
Nina J Kristofik, Lingfeng Qin, Nicole E Calabro, Sashka Dimitrievska, Guangxin Li, George Tellides, Laura E Niklason, Themis R Kyriakides
Each year, hundreds of thousands coronary bypass procedures are performed in the US, yet there currently exists no off-the-shelf alternative to autologous vessel transplant. In the present study, we investigated the use of mouse thrombospondin-2 knockout (TSP2 KO) cells, which secrete a non-thrombogenic and pro-migratory extracellular matrix (TSP2 KO ECM), to modify small diameter vascular grafts. To accomplish this, we first optimized the incorporation of TSP2 KO ECM on decellularized rat aortas. Because MMP levels are known to be elevated in TSP2 KO cell culture, it was necessary to probe the effect of the modification process on the graft's mechanical properties...
June 22, 2017: Biomaterials
https://www.readbyqxmd.com/read/28623186/assessment-of-active-video-gaming-using-adapted-controllers-by-individuals-with-physical-disabilities-a-protocol
#19
Laurie A Malone, Sangeetha Padalabalanarayanan, Justin McCroskey, Mohanraj Thirumalai
BACKGROUND: Individuals with disabilities are typically more sedentary and less fit compared to their peers without disabilities. Furthermore, engaging in physical activity can be extremely challenging due to physical impairments associated with disability and fewer opportunities to participate. One option for increasing physical activity is playing active video games (AVG), a category of video games that requires much more body movement for successful play than conventional push-button or joystick actions...
June 16, 2017: JMIR Research Protocols
https://www.readbyqxmd.com/read/28622667/netvlad-cnn-architecture-for-weakly-supervised-place-recognition
#20
Relja Arandjelovic, Petr Gronat, Akihiko Torii, Tomas Pajdla, Josef Sivic
We tackle the problem of large scale visual place recognition, where the task is to quickly and accurately recognize the location of a given query photograph. We present the following four principal contributions. First, we develop a convolutional neural network (CNN) architecture that is trainable in an end-to-end manner directly for the place recognition task. The main component of this architecture, NetVLAD, is a new generalized VLAD layer, inspired by the "Vector of Locally Aggregated Descriptors" image representation commonly used in image retrieval...
June 1, 2017: IEEE Transactions on Pattern Analysis and Machine Intelligence
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