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https://www.readbyqxmd.com/read/29340931/vascutrainer-a-mobile-and-disposable-bioreactor-system-for-the-conditioning-of-tissue-engineered-vascular-grafts
#1
Frederic Wolf, Diana M Rojas González, Ulrich Steinseifer, Markus Obdenbusch, Werner Herfs, Christian Brecher, Stefan Jockenhoevel, Petra Mela, Thomas Schmitz-Rode
In vitro tissue engineering of vascular grafts requires dynamic conditioning in a bioreactor system for in vitro tissue maturation and remodeling to receive a mechanically adequate and hemocompatible implant. The goal of the current work was to develop a bioreactor system for the conditioning of vascular grafts which is (i) able to create a wide range of flow, pressure and frequency conditions, including physiological ones; (ii) compact and easy to assemble; (iii) transportable; (iv) disposable. The system is driven by a small centrifugal pump controlled via a custom-made control unit, which can also be operated on batteries to allow for autonomous transportation...
January 16, 2018: Annals of Biomedical Engineering
https://www.readbyqxmd.com/read/29337103/green-options-for-imparting-antibacterial-functionality-to-cotton-fabrics
#2
Nabil A Ibrahim, Nahed A Abd El-Ghany, Basma M Eid, Eman M Mabrouk
This study demonstrated that antibacterial cellulosic textiles can be fabricated in eco-friendly manner by grafting of monochlorotriazinyl β-cyclodextin (MCT-βCD) onto knitted and woven cotton fabrics followed by post-loading of any of the green active ingredients namely Rosemary oil, Lavender oil, Clove oil, Cinnamon oil, Aloe vera gel, Vanillin, Ag-ions, Natural Yellow 7 and Natural Red 25 dyes into the hydrophobic cavities of grafted β-CD moieties. Some of the grafted, post-loaded fabric samples were characterized by FTIR, SEM, and EDS analysis...
January 11, 2018: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29334016/case-report-to-demonstrate-the-need-for-selection-criteria-for-optimal-adjustable-velcro-wrap-prescription
#3
Suzie Ehmann, Karen Bock
Compression, in the form of either a compression bandage or a compression stocking, has been touted as the gold standard for treatment of swelling and venous leg ulcers (VLUs). Adjustable Velcro wraps have been marketed as compression alternative. Although there is a growing body of evidence to support use of these products, there has not been a critical evaluation of the functionality of the devices to best matching product to patient presentation and ability to use the device effectively. Unlike compression garments, which are classified by compression category (class I/II or flat knit/circular), there is not an algorithm to direct health professionals to best match a specific adjustable Velcro wrap to an individual patient presentation...
January 1, 2018: Journal of Wound Care
https://www.readbyqxmd.com/read/29314586/novel-large-pore-lightweight-polypropylene-mesh-has-better-biocompatibility-for-rat-model-of-hernia
#4
Wangwang Qiu, Cheng Zhong, Rui Xu, Ting Zou, Fujun Wang, Youben Fan, Lu Wang, Zhili Yang
PURPOSE: Abdominal wall hernias are repaired with tension-free prosthetic materials but there remains a foreign body response (FBR) to commonly used polypropylene mesh. Thus, we should optimize mesh materials to improve the patient outcomes after surgery. MATERIALS AND METHODS: A polypropylene mesh was developed with wrap knitting technique. The physical, mechanical and biocompatible characteristics were tested in a rat abdominal hernia model and compared to ULTRAPRO and Easy Prosthesis...
January 3, 2018: Journal of Biomedical Materials Research. Part A
https://www.readbyqxmd.com/read/29295547/3d-printed-structures-filled-with-carbon-fibers-and-functionalized-with-mesenchymal-stem-cell-conditioned-media-as-in-vitro-cell-niches-for-promoting-chondrogenesis
#5
Josefa Predestinación García-Ruíz, Andrés Díaz Lantada
In this study, we present a novel approach towards the straightforward, rapid, and low-cost development of biomimetic composite scaffolds for tissue engineering strategies. The system is based on the additive manufacture of a computer-designed lattice structure or framework, into which carbon fibers are subsequently knitted or incorporated. The 3D-printed lattice structure acts as support and the knitted carbon fibers perform as driving elements for promoting cell colonization of the three-dimensional construct...
December 24, 2017: Materials
https://www.readbyqxmd.com/read/29285960/targeting-oxidative-stress-through-antioxidants-in-diabetes-mellitus
#6
Parul Thakur, Ashwini Kumar, Awanish Kumar
The myriad of complications associated with diabetes is closely linked with the generation of reactive species or free radicals leading to oxidative and nitrosative stress. Increased oxidative stress is an important cause and result of diabetes and it is thought to underlie the cellular changes that lead to diabetic complications. The whole cause and effect form a vicious circle, underlying many layers of potential therapeutics in its research. In this regards, this review outlines the briefs about the correlation of type 2 diabetes and oxidative (or nitrosative) stress and also compiles the potentiality of various antioxidants that are being or can be used for alleviating the oxidative stress...
December 29, 2017: Journal of Drug Targeting
https://www.readbyqxmd.com/read/29280275/solution-processed-metal-coating-to-nonwoven-fabrics-for%C3%A2-wearable-rechargeable-batteries
#7
Kyulin Lee, Jin Hyeok Choi, Hye Moon Lee, Ki Jae Kim, Jang Wook Choi
Wearable rechargeable batteries require electrode platforms that can withstand various physical motions, such as bending, folding, and twisting. To this end, conductive textiles and paper have been highlighted, as their porous structures can accommodate the stress built during various physical motions. However, fabrics with plain weaves or knit structures have been mostly adopted without exploration of nonwoven counterparts. Also, the integration of conductive materials, such as carbon or metal nanomaterials, to achieve sufficient conductivity as current collectors is not well-aligned with large-scale processing in terms of cost and quality control...
December 27, 2017: Small
https://www.readbyqxmd.com/read/29276787/late-disruption-of-a-polyethylene-terephthalate-aortic-graft-30-years-after-initial-graft-placement
#8
Akihito Matsushita, Yu Tsunoda, Takashi Hattori, Wahei Mihara
A 71 year old male who had undergone extra-anatomic bypass grafting between the ascending aorta and the thoraco-abdominal aorta at 41 years of age for aortic coarctation was admitted with back pain and dyspnea. A 16 mm Cooley double velour knitted polyethylene terephthalate (PET) graft was used in the initial operation in 1983. Computed tomography showed disruption of the initial PET graft perforating the right atrium, and a pseudoaneurysm at the distal anastomosis. The patient was in acute cardiac failure because of left to right shunting...
2018: EJVES Short Reports
https://www.readbyqxmd.com/read/29258222/combinative-scouring-bleaching-and-cationization-pretreatment-of-greige-knitted-cotton-fabrics-for-facilely-achieving-salt-free-reactive-dyeing
#9
Wei Ma, Kezhan Shen, Nan Xiang, Shufen Zhang
In order to facilely achieve pretreatment and salt-free dyeing of greige knitted cotton fabrics, a combinative scouring, bleaching, and cationization pretreatment of the fabrics is designed in this study. The fabrics are first treated in a bath containing commercial scouring and bleaching agents, and then glycidyltrimethylammonium chloride (GTA) is directly added into the bath to achieve cationization of the fabrics. Utilization of the alkaline and high-temperature conditions in scouring and bleaching process, cationization can facilely proceed in a short time...
December 18, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29250018/forming-facial-expressions-influences-assessment-of-others-dominance-but-not-trustworthiness
#10
Yoshiyuki Ueda, Kie Nagoya, Sakiko Yoshikawa, Michio Nomura
Forming specific facial expressions influences emotions and perception. Bearing this in mind, studies should be reconsidered in which observers expressing neutral emotions inferred personal traits from the facial expressions of others. In the present study, participants were asked to make happy, neutral, and disgusted facial expressions: for "happy," they held a wooden chopstick in their molars to form a smile; for "neutral," they clasped the chopstick between their lips, making no expression; for "disgusted," they put the chopstick between their upper lip and nose and knit their brows in a scowl...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/29222737/differences-by-sexual-orientation-in-perceptions-of-neighborhood-cohesion-implications-for-health
#11
Carrie Henning-Smith, Gilbert Gonzales
A large body of research documents the relationship between health and place, including the positive association between neighborhood cohesion and health. However, very little research has examined neighborhood cohesion by sexual orientation. This paper addresses that gap by examining differences in perceived neighborhood cohesion by sexual orientation. We use data from the 2016 National Health Interview Survey (n = 28,164 respondents aged 18 years and older) to examine bivariate differences by sexual orientation in four measures of neighborhood cohesion...
December 8, 2017: Journal of Community Health
https://www.readbyqxmd.com/read/29213206/hiv-transmission-clusters-among-injecting-drug-users-in-romania
#12
Aura Temereanca, Cristiana Oprea, Joel O Wertheim, Irina Ianache, Emanoil Ceausu, Costin Cernescu, Sanjay R Mehta, Simona Ruta
Injection drug use is increasingly an important route of HIV transmission in Romania (from 1.5% of the newly diagnosed cases prior to 2010 to 31% in 2013). In this study we investigated the viral characteristics and relationships in newly HIV infected persons who inject drugs in Bucharest, Romania. Results: HIV-1 pol sequencing, followed by phylogenetic and clustering analysis was performed on blood from 37 injecting drug users (IDUs) newly diagnosed with HIV infection. While HIV subtype F1, the dominant strain in Romania since 1990, remains prevalent, new subtypes were found including G, B, B/G and B/F recombinants...
January 2017: Romanian Biotechnological Letters
https://www.readbyqxmd.com/read/29212730/hierarchical-social-networks-shape-gut-microbial-composition-in-wild-verreaux-s-sifaka
#13
Amanda C Perofsky, Rebecca J Lewis, Laura A Abondano, Anthony Di Fiore, Lauren Ancel Meyers
In wild primates, social behaviour influences exposure to environmentally acquired and directly transmitted microorganisms. Prior studies indicate that gut microbiota reflect pairwise social interactions among chimpanzee and baboon hosts. Here, we demonstrate that higher-order social network structure-beyond just pairwise interactions-drives gut bacterial composition in wild lemurs, which live in smaller and more cohesive groups than previously studied anthropoid species. Using 16S rRNA gene sequencing and social network analysis of grooming contacts, we estimate the relative impacts of hierarchical (i...
December 6, 2017: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/29210590/weavable-and-highly-efficient-organic-light-emitting-fibers-for-wearable-electronics-achieved-by-a-scalable-low-temperature-process
#14
Seonil Kwon, Hyuncheol Kim, Seungyeop Choi, Eun Gyo Jeong, Dohong Kim, Somin Lee, Hoseung Lee, Young Cheol Seo, Kyung Cheol Choi
Fiber-based wearable displays, one of the most desirable requisites of electronic textiles (e-textiles), have emerged as a technology for their capability to revolutionize textile and fashion industries in collaboration with the state-of-the-art electronics. Nonetheless, challenges remain for the fibertronic approaches, because fiber-based light-emitting devices suffer from much lower performance than those fabricated on planar substrates. Here, we report weavable and highly efficient fiber-based organic light-emitting diodes (fiber OLEDs) based on a simple, cost-effective and low-temperature solution process...
December 6, 2017: Nano Letters
https://www.readbyqxmd.com/read/29210114/atomically-thin-mesoporous-co3-o4-layers-strongly-coupled-with-n-rgo-nanosheets-as-high-performance-bifunctional-catalysts-for-1d-knittable-zinc-air-batteries
#15
Yingbo Li, Cheng Zhong, Jie Liu, Xiaoqiao Zeng, Shengxiang Qu, Xiaopeng Han, Yida Deng, Wenbin Hu, Jun Lu
Under development for next-generation wearable electronics are flexible, knittable, and wearable energy-storage devices with high energy density that can be integrated into textiles. Herein, knittable fiber-shaped zinc-air batteries with high volumetric energy density (36.1 mWh cm-3 ) are fabricated via a facile and continuous method with low-cost materials. Furthermore, a high-yield method is developed to prepare the key component of the fiber-shaped zinc-air battery, i.e., a bifunctional catalyst composed of atomically thin layer-by-layer mesoporous Co3 O4 /nitrogen-doped reduced graphene oxide (N-rGO) nanosheets...
December 6, 2017: Advanced Materials
https://www.readbyqxmd.com/read/29209562/collagen-i-enhances-the-efficiency-and-anti-tumor-activity-of-dendritic-tumor-fusion-cells
#16
Jian He, Rong Zheng, Zhenghua Zhang, Jie Tan, Chaofan Zhou, Guoqing Zhang, Xinglu Jiang, Qianyi Sun, Sufang Zhou, Duo Zheng, Yong Huang, Lige Wu, Zongqiang Lai, Jieping Li, Nuo Yang, Xiaoling Lu, Yongxiang Zhao
Low fusion efficiency and nominal activity of fusion cells (FCs) restrict the clinical application of dendritic cell (DC)/tumor fusion cells. Collagen I (Col I) is an interstitial collagen with a closely-knit structure used to repair damaged cell membranes. This study evaluated whether Col I could improve the fusion efficiency of polyethylene glycol (PEG)-induction and enhance the immunogenicity of fusion vaccine. DC/B16 melanoma and controlled DC/H22 hepatoma cell fusions were induced by PEG with or without Col I...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/29208898/diffusion-of-treatment-in-social-networks-and-mass-drug-administration
#17
Goylette F Chami, Andreas A Kontoleon, Erwin Bulte, Alan Fenwick, Narcis B Kabatereine, Edridah M Tukahebwa, David W Dunne
Information, behaviors, and technologies spread when people interact. Understanding these interactions is critical for achieving the greatest diffusion of public interventions. Yet, little is known about the performance of starting points (seed nodes) for diffusion. We track routine mass drug administration-the large-scale distribution of deworming drugs-in Uganda. We observe friendship networks, socioeconomic factors, and treatment delivery outcomes for 16,357 individuals in 3491 households of 17 rural villages...
December 5, 2017: Nature Communications
https://www.readbyqxmd.com/read/29207573/the-effects-of-industrial-protective-gloves-and-hand-skin-temperatures-on-hand-grip-strength-and-discomfort-rating
#18
Mohamed Z Ramadan
Daily working activities and functions require a high contribution of hand and forearm muscles in executing grip force. To study the effects of wearing different gloves on grip strength, under a variety of hand skin temperatures, an assessment of the maximum grip strength was performed with 32 healthy male workers with a mean age (standard deviation) of 30.44 (5.35) years wearing five industrial gloves at three hand skin temperatures. Their ages and anthropometric characteristics including body mass index (BMI), hand length, hand width, hand depth, hand palm, and wrist circumference were measured...
December 4, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/29192178/characterisation-of-porous-knitted-titanium-for-replacement-of-intervertebral-disc-nucleus-pulposus
#19
Gauri Tendulkar, Vrinda Sreekumar, Frank Rupp, Arun K Teotia, Kiriaki Athanasopulu, Ralf Kemkemer, Alfred Buck, Alfred Buck, Hans-Peter Kaps, Jürgen Geis-Gerstorfer, Ashok Kumar, Andreas K Nussler
Effective restoration of human intervertebral disc degeneration is challenged by numerous limitations of the currently available spinal fusion and arthroplasty treatment strategies. Consequently, use of artificial biomaterial implant is gaining attention as a potential therapeutic strategy. Our study is aimed at investigating and characterizing a novel knitted titanium (Ti6Al4V) implant for the replacement of nucleus pulposus to treat early stages of chronic intervertebral disc degeneration. Specific knitted geometry of the scaffold with a porosity of 67...
November 30, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29190411/knit-together
#20
Corey D Fogleman
No abstract text is available yet for this article.
November 2017: Family Medicine
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