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Min Gyu Kyung, Seung Hoo Lee, Min Bom Kim
Patellar fractures are characterized by injuries to the extensor and typically require surgical fixation. Among the methods used for fixation, the most common is the modified AO tension-band wiring technique. However, using this technique, implant migration occurs due to the lack of connections between the K-wires and the tension-band wire, which causes irritation and reduces fracture stability. Recently, new methods for tension-band wiring have been developed in which tension bands lock the K-wires through an attached "ring" to prevent migration...
October 24, 2016: Journal of Knee Surgery
S C Cifuentes, E Frutos, R Benavente, V Lorenzo, J L González-Carrasco
This work deals with the mechanical characterization by depth-sensing indentation (DSI) of PLLA and PLDA composites reinforced with micro-particles of Mg (up to 15wt%), which is a challenging task since the indented volume must provide information of the bulk composite, i.e. contain enough reinforcement particles. The composites were fabricated by combining hot extrusion and compression moulding. Physico-chemical characterization by TGA and DSC indicates that Mg anticipates the thermal degradation of the polymers but does not compromise their stability during processing...
September 21, 2016: Journal of the Mechanical Behavior of Biomedical Materials
Dallas M Smuin, William L Hennrikus
BACKGROUND: The pucker sign, also called skin tenting, indicates significant displacement of the supracondylar fracture and can be a cause for alarm. The purpose of this study is to compare a cohort of patients with type III supracondylar fractures presenting with a pucker sign to a group without a pucker sign by evaluating neurovascular injury at presentation, need for open reduction, persistent neurovascular injury, range of motion, and carrying angle at final follow-up. METHODS: A retrospective review was performed for Gartland type III extension type supracondylar fractures...
October 21, 2016: Journal of Pediatric Orthopedics
W-J Guan, G-J Yang
OBJECTIVE: We investigated the significance of a change in retinol binding protein (RBP4) levels in the plasma of patients with coronary heart disease complicated with hyperlipidemia. PATIENTS AND METHODS: 66 cases of coronary heart disease (CHD) patients in Cardiovascular Department of our Hospital from December 2014 to December 2015 were selected. Based on the diagnostic criteria of hyperinsulinemia, patients were divided into a CHD Group with 35 cases and a CHD-Hyperinsulinemia Group (CHD-H group) with 31 cases...
October 2016: European Review for Medical and Pharmacological Sciences
Vijay M Dhurandhare, Yuh-Sheng Wen, Sachin D Gawande, Pin-Hsuan Liao, Cheng-Chung Wang
We report a microwave-assisted intramolecular anomeric protection (iMAP) of glucosamine, which facilitates concise transformation of 1,6-anhydroglucosamine into 1,6-anhydrogalactosamine and 1,6-anhydroallosamine. The iMAP simultaneously obviates both the O1 and O6 protection, and the differentiation between O3 and O4 can be well-controlled by the N2 functionality because of the hydrogen bonding between N2 and O4. Epimerization of O4 afforded the galactosamine derivative and that of O3 yielded allosamine.
October 24, 2016: Journal of Organic Chemistry
Huanhuan Yang, Xiangyu Cao, Fan Yang, Jun Gao, Shenheng Xu, Maokun Li, Xibi Chen, Yi Zhao, Yuejun Zheng, Sijia Li
Diverse electromagnetic (EM) responses of a programmable metasurface with a relatively large scale have been investigated, where multiple functionalities are obtained on the same surface. The unit cell in the metasurface is integrated with one PIN diode, and thus a binary coded phase is realized for a single polarization. Exploiting this anisotropic characteristic, reconfigurable polarization conversion is presented first. Then the dynamic scattering performance for two kinds of sources, i.e. a plane wave and a point source, is carefully elaborated...
October 24, 2016: Scientific Reports
Ž L Jelić, M V Milošević, A V Silhanek
An experimental determination of the mean vortex velocity in superconductors mostly relies on the measurement of flux-flow resistance with magnetic field, temperature, or driving current. In the present work we introduce a method combining conventional transport measurements and a frequency-tuned flashing pinning potential to obtain reliable estimates of the vortex velocity. The proposed device is characterized using the time-dependent Ginzburg-Landau formalism, where the velocimetry method exploits the resonances in mean vortex dissipation when temporal commensuration occurs between the vortex crossings and the flashing potential...
October 24, 2016: Scientific Reports
Noora Tuomilehto, Reetta Kivisaari, Antti Sommarhem, Aarno Y Nietosvaara
Background and purpose - The quality of pin fixation of displaced supracondylar humerus fractures in children has not been assessed, and the clinical value of radiographic examinations after pin fixation is unclear. We evaluated pin configuration, quality of osteosynthesis, and outcome in 264 supracondylar fractures. The clinical significance of postoperative radiographs was analyzed. Patients and methods - 252 Gartland-III and 12 flexion-type supracondylar humerus fractures were pin-fixed in the periods 2002-2006 and 2012-2014...
October 24, 2016: Acta Orthopaedica
Christian Doose, Maximilian Kütting, Sandrine Egron, Pejman Farhadi Ghalati, Christoph Schmitz, Marc Utzenrath, Alexander Sedaghat, Buntaro Fujita, Thomas Schmitz-Rode, Stephan Ensminger, Ulrich Steinseifer
OBJECTIVES: Bioprosthetic aortic heart valves are increasingly implanted in younger patients. Therefore, a strategy for potential valve failure should be developed before implanting the 'first valve'. The goal of this in vitro study was to provide insight into the effects of the design of a bioprosthesis on a valve-in-valve implanted Sapien XT valve. METHODS: The hydrodynamic performance of a 23-mm Sapien XT valve implanted in Vascutek Aspire, Edwards Perimount, Medtronic Mosaic and St...
October 23, 2016: European Journal of Cardio-thoracic Surgery
Hana Rakusová, Mohamad Abbas, Huibin Han, Siyuan Song, Hélène S Robert, Jiří Friml
Plants adjust their growth according to gravity. Gravitropism involves gravity perception, signal transduction, and asymmetric growth response, with organ bending as a consequence [1]. Asymmetric growth results from the asymmetric distribution of the plant-specific signaling molecule auxin [2] that is generated by lateral transport, mediated in the hypocotyl predominantly by the auxin transporter PIN-FORMED3 (PIN3) [3-5]. Gravity stimulation polarizes PIN3 to the bottom sides of endodermal cells, correlating with increased auxin accumulation in adjacent tissues at the lower side of the stimulated organ, where auxin induces cell elongation and, hence, organ bending...
October 8, 2016: Current Biology: CB
Shitao Xu, Yongqing Ma, Bingqian Geng, Xiao Sun, Min Wang
Approximately single-domain-sized 9-, 13-, and 16-nm CoFe2O4 nanoparticles are synthesized using the thermal decomposition of a metal-organic salt. By means of dilution and reduction, the concentration, moment, and anisotropy of nanoparticles are changed and their influence on the magnetic properties is investigated. The relation of M r/M s ∝ 1/lgH dip is observed, where M r/M s is the remanence ratio and H dip is the maximum dipolar field. Especially, such relation is more accurate for the nanoparticle systems with higher concentration and higher moment, i...
December 2016: Nanoscale Research Letters
In Ae Chang, Hee Don Lim, Ki Joong Kim, Hwachul Shin, Uk Namgung
ETHNOPHARMACOLOGICAL RELEVANCE: Buyang Huanwu decoction (BYHWD) has been used in the traditional Chinese medicine for the treatment of cardiovascular and neurological symptoms, and recent experimental studies have begun to provide evidence showing its protective effects on neural cells. Yet, its function for the regenerative responses of axons in the peripheral nerve after injury is not known. AIM OF THE STUDY: The primary objective of the present study was to explore that BYHWD is involved in growth-promoting activity of the peripheral nerve axons after injury...
October 19, 2016: Journal of Ethnopharmacology
Ozlem Korkmaz Dilmen, Eren Fatma Akcil, Abdulvahap Oguz, Hayriye Vehid, Yusuf Tunali
Since awake craniotomy (AC) has become a standard of care for supratentorial tumour resection, especially in the motor and language cortex, determining the most appropriate anaesthetic protocol is very important. The aim of this retrospective study is to compare the effectiveness of conscious sedation (CS) to "awake-asleep-awake" (AAA) techniques for supratentorial tumour resection. Forty-two patients undergoing CS and 22 patients undergoing AAA were included in the study. The primary endpoint was to compare the CS and AAA techniques with respect to intraoperative pain and agitation in patients undergoing supratentorial tumour resection...
October 19, 2016: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
Muhammad Imran Rahim, Andreas Weizbauer, Florian Evertz, Andrea Hoffmann, Manfred Rohde, Birgit Glasmacher, Henning Windhagen, Gerhard Gross, Jan-Marten Seitz, Peter P Mueller
Magnesium alloys are presently under investigation as promising biodegradable implant materials with osteoconductive properties. To study the molecular mechanisms involved, the potential contribution of soluble magnesium corrosion products to the stimulation of osteoblastic cell differentiation was examined. However, no evidence for the stimulation of osteoblast differentiation could be obtained when cultured mesenchymal precursor cells were differentiated in the presence of metallic magnesium or in cell culture medium containing elevated magnesium ion levels...
October 22, 2016: Journal of Biomedical Materials Research. Part A
Ying Zhang, Qinqin Yu, Nan Jiang, Xu Yan, Chao Wang, Qingmei Wang, Jianzhong Liu, Muyuan Zhu, Sebastian Y Bednarek, Jian Xu, Jianwei Pan
Phototropism is the process by which plants grow towards light in order to maximize the capture of light for photosynthesis, which is particularly important for germinating seedlings. In Arabidopsis, hypocotyl phototropism is predominantly triggered by blue light (BL), which has a profound effect on the establishment of asymmetric auxin distribution, essential for hypocotyl phototropism. Two auxin efflux transporters ATP-BINDING CASSETTE B19 (ABCB19) and PIN-FORMED 3 (PIN3), are known to mediate the effect of BL on auxin distribution in the hypocotyl, but the details for how BL triggers PIN3 lateralization remain poorly understood...
October 22, 2016: Plant, Cell & Environment
Shermin Tan, Yijun Lin, Kelly Foo, Han Fang Koh, Charlene Tow, Yiwen Zhang, Li Wei Ang, Lin Cui, Hishamuddin Badaruddin, Peng Lim Ooi, Raymond Tzer Pin Lin, Jeffery Cutter
We conducted a retrospective study of 40 case-patients and 58 controls as part of a nationwide investigation of a group B Streptococcus outbreak in Singapore in 2015. Eating a Chinese-style raw fish dish (yusheng) was a major risk factor for bacteremia, particularly caused by serotype III sequence type 283.
November 2016: Emerging Infectious Diseases
Cenk Özkan, Mehmet Ali Deveci, Mustafa Tekin, Ömer Sunkar Biçer, Kadir Gökçe, Mahir Gülşen
OBJECTIVE: The present study assessed functional and radiographic outcomes of distraction osteogenesis treatment of post-traumatic elbow deformities in children. METHODS: Eight children were treated between 2008 and 2013 for post-traumatic elbow deformities using distraction osteogenesis. Mean age at time of operation was 10.9 years. Six patients had varus and 2 had valgus deformity. Magnitude of correction, fixator index, complications, carrying angle, and elbow range of motion were assessed...
October 17, 2016: Acta Orthopaedica et Traumatologica Turcica
Po-Liang Lu, Ya-Ju Hsieh, Jun-En Lin, Jun-Wei Huang, Tsung-Ying Yang, Lin Lin, Sung-Pin Tseng
Although fosfomycin is a treatment option for infections caused by extended-spectrum β-lactamase (ESBL)-producing Enterobacteriaceae, fosfomycin resistance has been documented. To our knowledge, fosfomycin resistance mechanisms in Klebsiella pneumoniae have not been systematically investigated. A total of 108 ESBL-producing K. pneumoniae isolates collected from Kaohsiung Medical University Hospital, Taiwan, from August 2012 to May 2013 were analysed in this study. Pulsed-field gel electrophoresis (PFGE) revealed 64 pulsotypes and six non-typeable isolates, indicating high genetic diversity...
September 30, 2016: International Journal of Antimicrobial Agents
Yohannes W Woldeamanuel, Peter R Kamerman, Demetri G A Veliotes, Tudor J Phillips, David Asboe, Marta Boffito, Andrew S C Rice
HIV-associated sensory peripheral neuropathy (HIV-SN) afflicts approximately 50% of patients on antiretroviral therapy, and is associated with significant neuropathic pain. Simple accurate diagnostic instruments are required for clinical research and daily practice in both high- and low-resource setting. A 4-item clinical tool (CHANT: Clinical HIV-associated Neuropathy Tool) assessing symptoms (pain and numbness) and signs (ankle reflexes and vibration sense) was developed by selecting and combining the most accurate measurands from a deep phenotyping study of HIV positive people (Pain In Neuropathy Study-HIV-PINS)...
2016: PloS One
Jiunn-Wei Wang, Chien-Ning Hsu, Wei-Chen Tai, Ming-Kun Ku, Tsung-Hsing Hung, Kuo-Lun Tseng, Lan-Ting Yuan, Seng-Howe Nguang, Chih-Ming Liang, Shih-Cheng Yang, Cheng-Kun Wu, Pin-I Hsu, Deng-Chyang Wu, Seng-Kee Chuah
The association of Helicobacter pylori eradication with the occurrence of renal dysfunction in patients with peptic ulcer diseases is still unclear. This study aimed to clarify the relevance of H. pylori eradication to the occurrence of chronic kidney diseases in patients with peptic ulcer diseases. Data that were available from 2000-2011 were extracted from the National Health Insurance Research Database in Taiwan, and all patients with peptic ulcer diseases (n = 208 196) were screened for eligibility. We divided randomly selected patients into an H...
2016: PloS One
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