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https://www.readbyqxmd.com/read/28432459/using-an-anatomically-preshaped-low-profile-locking-plate-system-leads-to-reliable-results-in-comminuted-radial-head-fractures
#1
Moritz Crönlein, Michael Zyskowski, Marc Beirer, Florian B Imhoff, Dominik Pförringer, Gunther H Sandmann, Chlodwig Kirchhoff, Peter Biberthaler, Sebastian Siebenlist
INTRODUCTION: For comminuted and displaced fractures of the radial head open reduction and internal fixation (ORIF) is recommended nowadays as the treatment of choice. Due to the development of locking plates the possibilities of ORIF in complex fracture types were extended. The purpose of this retrospective survey therefore was to review the preliminary subjective and objective results in patients treated by anatomically preshaped locked plating. A reliable fracture healing for these recently introduced plating devices was hypothesized...
April 21, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28421735/a-self-healable-and-cold-resistant-supercapacitor-based-on-a-multifunctional-hydrogel-electrolyte
#2
Feng Tao, Liming Qin, Zhikui Wang, Qinmin Pan
Excellent self-healability and cold-resistance are attractive properties for a portable/wearable energy-storage device. However, achieving the features is fundamentally dependent on an intrinsically self-healable electrolyte with high ionic conduction at low temperature. Here we report such a hydrogel electrolyte comprising sodium alginate cross-linked by dynamic catechol-borate ester bonding. Since its dynamically cross-linked alginate network can tolerate high content inorganic salts, the electrolyte possesses excellent healing efficiency/cyclability but also high ionic conduction at both room temperature and low temperature...
April 19, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28421182/tgf-%C3%AE-1-pretreatment-improves-the-function-of-mesenchymal-stem-cells-in-the-wound-bed
#3
Deepraj Ghosh, Daniel J McGrail, Michelle R Dawson
The wound healing process initiates after injury to a tissue and involves a series of orchestrated events to minimize the invasion of foreign matters such as bacteria and efficiently regenerate the damaged tissue. A variety of cells must be recruited to the tissue during wound healing. However, this process is severely disrupted in patients suffering from chronic illness, including diabetes, leading to impaired healing or non-healing wounds. Current avenues of treatment include negative-pressure therapy, wound debridement, growth factor replacement, and cell-based therapies...
2017: Frontiers in Cell and Developmental Biology
https://www.readbyqxmd.com/read/28417630/self-healable-and-reprocessable-polysulfide-sealants-prepared-from-liquid-polysulfide-oligomer-and-epoxy-resin
#4
Wentong Gao, Mengyao Bie, Fu Liu, Pengshan Chang, Yiwu Quan
Polysulfide sealants have been commercially applied in many industrial fields. This paper studied the self-healing property of the epoxy resin cured polysulfide sealants for the first time. The obtained sealants showed a flexible range of the ultimate elongation from 157 to 478% and tensile strength from 1.02 to 0.75 MPa corresponding to different polysulfide oligomers. By taking advantage of the dynamic reversible exchange of disulfide bonds, the polysulfide sealants exhibited good self-healing ability under a moderate thermal stimulus...
April 18, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28417536/stretchable-and-soft-electronics-using-liquid-metals
#5
REVIEW
Michael D Dickey
The use of liquid metals based on gallium for soft and stretchable electronics is discussed. This emerging class of electronics is motivated, in part, by the new opportunities that arise from devices that have mechanical properties similar to those encountered in the human experience, such as skin, tissue, textiles, and clothing. These types of electronics (e.g., wearable or implantable electronics, sensors for soft robotics, e-skin) must operate during deformation. Liquid metals are compelling materials for these applications because, in principle, they are infinitely deformable while retaining metallic conductivity...
April 18, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28416335/clinical-outcomes-following-self-expanding-metal-stent-placement-for-esophageal-salvage
#6
Diana H Liang, Eric Hwang, Leonora M Meisenbach, Min P Kim, Edward Y Chan, Puja Gaur Khaitan
OBJECTIVES: To assess the efficacy of self-expanding metal stents (SEMS) for esophageal salvage in patients who would otherwise require esophageal/conduit resection. METHODS: We performed a retrospective chart review of patients who had SEMS placed from January 2010 to December 2015. Patient demographics, esophageal stent characteristics, and outcomes were assessed in our patient cohort. RESULTS: Our study included a total of 83 patients. A total of 148 SEMS were placed, with 121 partially covered SEMS (pcSEMS) and 27 fully covered SEMS (cSEMS)...
March 23, 2017: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28414976/glucose-sensitive-self-healing-hydrogel-as-sacrificial-materials-to-fabricate-vascularized-constructs
#7
Ting-Chen Tseng, Fu-Yu Hsieh, Patrick Theato, Yen Wei, Shan-Hui Hsu
A major challenge in tissue engineering is the lack of proper vascularization. Although various approaches have been used to build vascular network in a tissue engineering construct, there remain some drawbacks. Herein, a glucose-sensitive self-healing hydrogel are employed as sacrificial materials to fabricate branched tubular channels within a construct. The hydrogel composes of mainly reversibly crosslinked poly(ethylene glycol) diacrylate and dithiothreitol with borax as the glucose-sensitive motif. The hydrogel is injectable and mechanically strong after injection...
April 9, 2017: Biomaterials
https://www.readbyqxmd.com/read/28413987/alzheimer-s-disease-like-early-phase-brain-pathogenesis-self-curing-amelioration-of-neurodegeneration-from-pro-inflammatory-wounding-to-anti-inflammatory-healing
#8
Jiang He, Tao Liao, Guo-Xin Zhong, Ji-Da Zhang, Yan-Ping Chen, Qi Wang, Qing-Ping Zeng
The etiological initiators of neuroinflammation remain inclusive, and effective interventions to block neurodegeneration are unavailable. Surprisingly, we found collagen II-combined complete Freund's adjuvant (CC) that usually induces rheumatoid arthritis (RA) also drives Alzheimer's disease (AD)-like neurodegeneration in mice. CC not only upregulates the cerebral pro-inflammatory cytokines including tumor necrosis factor α (TNF-α) and interleukin 8 (IL-8), but also downregulates the cerebral interleukin 10 (IL-10), an anti-inflammatory cytokine, and tyrosine hydroxylase (TH), a rate-limiting enzyme for biosynthesis of the anti-inflammatory neurotransmitter dopamine...
April 17, 2017: Current Alzheimer Research
https://www.readbyqxmd.com/read/28413348/biofriendly-nanocomposite-containers-with-inhibition-properties-for-the-protection-of-metallic-surfaces
#9
T R Vakhitov, V E Katnov, P V Grishin, S N Stepin, D O Grigoriev
An attempt to combine two 'green' compounds in nanocomposite microcontainers in order to increase protection properties of waterborne acryl-styrene copolymer (ASC) coatings has been made. N-lauroylsarcosine (NLS) served as a corrosion inhibitor, and linseed oil (LO) as a carrier-forming component. LO is compatible with this copolymer and can impart to the coating self-healing properties. For the evaluation of the protective performance, three types of coatings were compared. In the first two, NLS was introduced in the coating formulation in the forms of free powder and micro-containers filled with LO, correspondingly...
March 2017: Proceedings. Mathematical, Physical, and Engineering Sciences
https://www.readbyqxmd.com/read/28408732/glial-cell-line-derived-neurotrophic-factor-transfected-placenta-derived-versus-bone-marrow-derived-mesenchymal-cells-for-treating-spinal-cord-injury
#10
Yao Lu, Hui Gao, Man Zhang, Bing Chen, Huilin Yang
BACKGROUND Placenta-derived mesenchymal stem cells (PMSCs) were isolated from placenta and had differentiation and self-renewal potential. We transfected PMSCs with glial cell line-derived neurotrophic factor (GDNF) and compared their effect for repairing spinal cord injury (SCI) with that of GDNF-transfected bone marrow-derived mesenchymal stem cell (BMSC). MATERIAL AND METHODS The PMSCs were isolated from Sprague-Dawley rat placenta; BMSCs were isolated from Sprague-Dawley rat thigh bone marrow. Primary cultured BMSCs and PMSCs were uniformly spindle-shaped...
April 14, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28407447/hierarchical-micro-nanofibrous-bioscaffolds-for-structural-tissue-regeneration
#11
Yun Xu, Wenguo Cui, Yanxia Zhang, Pinghui Zhou, Yong Gu, Xiaofeng Shen, Bin Li, Liang Chen
Various biomimetic scaffolds with hierarchical micro/nanostructures are designed to closely mimic native extracellular matrix network and to guide cell behavior to promote structural tissue generation. However, it remains a challenge to fabricate hierarchical micro/nanoscaled fibrous scaffolds with different functional components that endow the scaffolds with both biochemical and physical features to exert different biological roles during the process of tissue healing. In this study, a biomimetic designed micro/nanoscaled scaffold with integrated hierarchical dual fibrillar components is fabricated in order to repair dura mater and prevent the formation of epidural scars via collagen molecule self-assembly, electrospinning, and biological interface crosslinking strategies...
April 13, 2017: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/28405647/enzyme-induced-dual-network-%C3%AE%C2%B5-poly-l-lysine-based-hydrogels-with-robust-self-healing-and-antibacterial-performance
#12
Rui Wang, Qing Li, Bo Chi, Xiaoqiao Wang, Zheng Xu, Zongqi Xu, Su Chen, Hong Xu
An enzyme-induced strategy is reported to construct novel self-mending hydrogels based on ε-poly-l-lysine with both excellent self-healing properties (95%) and antibacterial capacity. Most importantly, the hydrogels are able to accelerate wound healing efficiently, which shows great potential in myriad biomedical fields, such as wound repair, artificial skin, and tissue engineering.
April 13, 2017: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/28402106/reply-to-comment-on-monitoring-network-and-interfacial-healing-processes-by-broadband-dielectric-spectroscopy-a-case-study-on-natural-rubber
#13
Marianella Hernandez, Antonio Mattia Grande, Sybrand van der Zwaag, Santiago J Garcia
Das et al. comment our publication on the use of broadband dielectric spectroscopy as a potential tool for monitoring healing processes in natural rubber. They argue that our interpretation of self-healing processes should be handled with care and that critical issues like rubber tackiness and sample fabrication for dielectric experiments were not properly addressed. We agree that tackiness in partially cured rubber does exist and that interpretation of dielectric experiments requires detailed insight into both the processes and the method, but we will try and re-argue below the correctness of our approach as reported in our publication...
April 12, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28395492/-the-clinical-features-and-efficacy-of-patients-with-geotropic-direction-changing-positional-nystagmus
#14
H Peng, L Y Wang, H T Song, W N Huang
Objective: The purpose of this study was to observe the clinical characteristics of two types of geotropic direction-changing positional nystagmus, the transient(nystagmus time <1 min) and the persistent(nystagmus time > 1 min), and to evaluate the efficacy of the barbecue roll maneuver. Methods: A total of 105 cases diagnosed by supine roll test were studied, which including 35 males and 70 females and the average age was (56.9±14.6)years. There were 70 transient geotropic DCPN and 35 persistent geotropic DCPN...
March 7, 2017: Zhonghua Er Bi Yan Hou Tou Jing Wai Ke za Zhi, Chinese Journal of Otorhinolaryngology Head and Neck Surgery
https://www.readbyqxmd.com/read/28387500/effect-of-3d-printed-microvascular-network-design-on-the-self-healing-behaviour-of-crosslinked-polymers
#15
Giovanni Postiglione, Mirco Alberini, Simon James Leigh, Marinella Levi, Stefano Turri
This article describes the manufacturing procedure and the characterization of self-healing polymers based on embedded microvascular networks. The samples were realized by resin casting into water soluble PVA moulds, fabricated via 3D printing. This technology allowed to exploit the 3D printers' ability of producing complex structures with high resolution for the creation of independent microchannels networks. The two reacting components of a two-parts resin could be stored separately within the microstructure...
April 7, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28386144/self-healing-juvenile-cutaneous-mucinosis
#16
Beata Kołodziejczyk, Agnieszka Gazda, Elżbieta Hernik, Izabela Szczygielska, Lidia Rutkowska-Sak, Marta Legatowicz Koprowska
Girl, aged 4 years old, began the disease with pain of the lower extremities, fever up to 38°C and signs of upper airway infection. Then the patient developed oedema and redness of the whole face, thickened skin, subcutaneous nodular foldings of the frontal, occipital, cervical and axillary regions, extensor areas of the joints; fine, hard whitish nodules in the frontal region and over interphalangeal joints of the hands, pruritus; oedemas of the ankles, knees and joints of the hands, cervical lymphadenopathy and hepatomegaly...
2017: Reumatologia
https://www.readbyqxmd.com/read/28385151/psychosocial-impact-of-scars-due-to-cutaneous-leishmaniasis-on-high-school-students-in-errachidia-province-morocco
#17
Issam Bennis, Séverine Thys, Hind Filali, Vincent De Brouwere, Hamid Sahibi, Marleen Boelaert
BACKGROUND: In Morocco, cutaneous leishmaniasis (CL) is usually known to be a slowly healing localized skin disease, but in some cases, it can lead to mutilating scars. The outbreak of CL due to Leishmania major in the Errachidia province in southeastern Morocco between 2008 and 2010 left many adolescents with permanent scar tissue on the face or other exposed body parts. We studied the psychosocial impact of CL on these young people. METHODS: In 2015 we conducted a cross-sectional survey among high-school students living in boarding schools in two CL-endemic areas of Errachidia: Rissani and Tinejdad...
April 7, 2017: Infectious Diseases of Poverty
https://www.readbyqxmd.com/read/28382364/towards-a-fragment-based-approach-in-gelator-design-halogen-effects-leading-to-thixotropic-mouldable-and-self-healing-systems-in-aryl-triazolyl-amino-acid-based-gelators
#18
Bhartendu K Srivastava, Muraleedharan K Manheri
A simple replacement of a H atom by Br transformed non-gelating aryl triazolyl amino acid benzyl ester into a versatile gelator, which formed shape-persistent, self-healing and mouldable gels. The 'bromo-aryl benzyl ester' fragment was then transplanted into another framework, which resulted in similar solvent preference and gelation efficiency.
April 6, 2017: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/28381672/supramolecular-polymeric-materials-containing-cyclodextrins
#19
REVIEW
Masaki Nakahata, Yoshinori Takashima, Akira Harada
Smart design of polymeric materials may lead to intelligent materials exhibiting unique functional properties. Looking at nature, living systems use specific and reversible intermolecular interactions in realizing complex functions. Hence reversible bonds based on selective molecular recognition can impart artificial materials with unique functional properties. This review mainly focuses on supramolecular polymeric materials based on cyclodextrin-based host-guest interactions. Polymeric materials using molecular recognition at polymer main chain, side chain, and termini are described...
2017: Chemical & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28380980/creating-a-nondiffracting-beam-with-sub-diffraction-size-by-a-phase-spatial-light-modulator
#20
Jing Wu, Zhixiang Wu, Yinghu He, Anping Yu, Zhihai Zhang, Zhongquan Wen, Gang Chen
Due to its unique properties of nondiffracting propagation, highly-localized intensity distribution, small beam cross-section, and self-healing, a nondiffracting beam is attractive for materials processing, microscopy, and optical research. Various methods have been investigated to generate such beams with conventional optics. However, the transverse size of those nondiffracting beams is restricted by the diffraction-limit. To overcome the diffraction limit, we use the concepts of super-oscillation and the vectorial angular spectrum method to design a phase mask mirror with a focal length of 1 m, radius of 5 mm, and numerical aperture of about 0...
March 20, 2017: Optics Express
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