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https://www.readbyqxmd.com/read/28102162/biomechanical-causes-of-fracture-non-union-after-diaphyseal-forearm-fracture-fixation-an-in-silico-analysis-case-study
#1
Jacek Lorkowski, Tomasz Kuczek, Ireneusz Kotela
: Non-union of forearm bone shaft fractures remains, in some cases, a major clinical problem. The aim of this study was to assess the biomechanical causes of non-union in a patient with diaphyseal forearm fractures fixated with LCP plates. The paper describes the case of a 35-year-old male who developed a non-union as a result of destabilisation of the fixation. The case was analysed with an in silico analysis of the removed fixation device. CONCLUSION: To sum up, we believe that the case described in this paper confirms the limitations to the use of LCP reconstruction plates in patients with well-developed musculature, even in the case of repeat fixation, when good adjustment of the plate well to the axis of the bone appears necessary...
October 28, 2016: Ortopedia, Traumatologia, Rehabilitacja
https://www.readbyqxmd.com/read/28093609/periprosthetic-fracture-around-a-stable-femoral-stem-treated-with-locking-plate-osteosynthesis-distal-femoral-locking-plate-alone-versus-with-cerclage-cable
#2
Young-Soo Shin, Seung-Beom Han
To promote rapid bone healing, an adequate stable fixation implant with a percutaneous reduction instrument should be used for Vancouver type B1 or C fractures. The objective of this study was to describe radiographic and clinical outcomes of patients with periprosthetic fracture (PPF) around a stable femoral stem, treated with a distal femoral locking plate alone or with a cerclage cable. A total of 21 patients with PPF amenable to either a reverse distal femoral locking plate (LCP DF(®)) alone or with a cerclage cable, with a mean age of 75...
January 16, 2017: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
https://www.readbyqxmd.com/read/28089451/crystallogenesis-of-membrane-proteins-mediated-by-polymer-bounded-lipid-nanodiscs
#3
Jana Broecker, Bryan T Eger, Oliver P Ernst
For some membrane proteins, detergent-mediated solubilization compromises protein stability and functionality, often impairing biophysical and structural analyses. Hence, membrane-protein structure determination is a continuing bottleneck in the field of protein crystallography. Here, as an alternative to approaches mediated by conventional detergents, we report the crystallogenesis of a recombinantly produced membrane protein that never left a lipid bilayer environment. We used styrene-maleic acid (SMA) copolymers to solubilize lipid-embedded proteins into SMA nanodiscs, purified these discs by affinity and size-exclusion chromatography, and transferred proteins into the lipidic cubic phase (LCP) for in meso crystallization...
January 3, 2017: Structure
https://www.readbyqxmd.com/read/28065456/characterization-and-functional-expression-of-a-rubber-degradation-gene-of-a-nocardia-degrader-from-a-rubber-processing-factory
#4
Dao Viet Linh, Nguyen Lan Huong, Michiro Tabata, Shunsuke Imai, Sou Iijima, Daisuke Kasai, To Kim Anh, Masao Fukuda
A rubber-degrading bacterial consortium named H2DA was obtained from an enrichment culture with natural rubber latex and rubber-processing factory waste in Vietnam. Gel permeation chromatography analysis revealed that only the strain NVL3 degraded synthetic poly(cis-1,4-isoprene) into low-molecular-weight intermediates among the three strains found in the H2DA. The 16S-rRNA gene sequence of NVL3 showed the highest identity with that of Nocardia farcinica DSM 43665(T). NVL3 accumulated aldehyde intermediates from synthetic poly(cis-1,4-isoprene) on a rubber-overlay plate as indicated by Schiff's staining...
January 3, 2017: Journal of Bioscience and Bioengineering
https://www.readbyqxmd.com/read/28053382/a-novel-adjustable-dynamic-plate-for-treatment-of-long-bone-fractures-an-in-vitro-biomechanical-study
#5
Ahmet Karakasli, Nihat Acar, Ahmet Karaarslan, Fatih Ertem, Hasan Havitcioglu
INTRODUCTION: Locking compression plate (LCP) system was designed to provide bone stability and to enhance bone healing. However, implant failure, nonunion and instability are still frequently encountered complications. The purpose of this study was to assess and compare the biomechanical characteristics of a novel adjustable dynamic plate (ADP) with the commonly used LCP. MATERIALS AND METHODS: Twelve 4th generation composite artificial femoral bones were used...
October 2016: Journal of Clinical Orthopaedics and Trauma
https://www.readbyqxmd.com/read/28053380/plating-versus-conservative-treatment-in-mid-shaft-fractures-of-clavicle-a-comparative-study
#6
R K S Dhakad, Mahendra Panwar, Sameer Gupta
OBJECTIVES: Mid shaft clavicle fractures have traditionally been treated by conservative means with good outcome. ORIF with plating is an upcoming option to improve outcome further. Aim of this study is to compare the outcome of anterosuperior plating with conservative treatment. METHODS: The study was conducted over a period of one year, with 50 skeletally mature closed mid shaft fractures included. Alternate patients were operated using a 3.5 mm anterosuperior LCP...
October 2016: Journal of Clinical Orthopaedics and Trauma
https://www.readbyqxmd.com/read/28040494/novel-four-sided-neural-probe-fabricated-by-a-thermal-lamination-process-of-polymer-films
#7
Soowon Shin, Jae-Hyun Kim, Joonsoo Jeong, Tae Mok Gwon, Seung-Hee Lee, Sung June Kim
BACKGROUND: Ideally, neural probes should have channels with a three-dimensional (3-D) configuration to record the activities of 3-D neural circuits. Many types of 3-D neural probes have been developed; however, most of them were designed as an array of multiple shanks with electrodes located along one side of the shanks. NEW METHOD: We developed a novel liquid crystal polymer (LCP)-based neural probe with four-sided electrodes. This probe has electrodes on four sides of the shank, i...
December 29, 2016: Journal of Neuroscience Methods
https://www.readbyqxmd.com/read/28029248/monoolein-cubic-phase-gels-and-cubosomes-doped-with-magnetic-nanoparticles-hybrid-materials-for-controlled-drug-release
#8
Monika Szlezak, Dorota Nieciecka, Aleksandra Joniec, Marek Pękała, Ewa Gorecka, Mélanie Emo, Marie J Stébé, Paweł Krysiński, Renata Bilewicz
Hybrid materials consisting of a monoolein lipidic cubic phase (LCP) incorporating two types of magnetic nanoparticles (NP) were designed as addressable drug delivery systems. The materials, prepared in the form of a gel, were subsequently used as a macroscopic layer modifying an electrode and, after dispersion to nanoscale, as magnetocubosomes. These two LCPs were characterized by small-angle X-ray scattering (SAXS), cross-polarized microscopy, magnetic measurements, and phase diagrams. The magnetic dopants were hydrophobic NPoleic and hydrophilic NPcitric, characterized by dynamic light scattering (DLS) and transmission electron microscopy (TEM), and their influence on the properties of the cubic phases was investigated...
January 9, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28018716/machine-learning-based-detection-of-age-related-macular-degeneration-amd-and-diabetic-macular-edema-dme-from-optical-coherence-tomography-oct-images
#9
Yu Wang, Yaonan Zhang, Zhaomin Yao, Ruixue Zhao, Fengfeng Zhou
Non-lethal macular diseases greatly impact patients' life quality, and will cause vision loss at the late stages. Visual inspection of the optical coherence tomography (OCT) images by the experienced clinicians is the main diagnosis technique. We proposed a computer-aided diagnosis (CAD) model to discriminate age-related macular degeneration (AMD), diabetic macular edema (DME) and healthy macula. The linear configuration pattern (LCP) based features of the OCT images were screened by the Correlation-based Feature Subset (CFS) selection algorithm...
December 1, 2016: Biomedical Optics Express
https://www.readbyqxmd.com/read/28002219/do-transcortical-screws-in-a-locking-plate-construct-improve-the-stiffness-in-the-fixation-of-vancouver-b1-periprosthetic-femur-fractures-a-biomechanical-analysis-of-2-different-plating-constructs
#10
Jasjit Lochab, Andrew Carrothers, Edwin Wong, Stewart McLachlin, Wassim Aldebeyan, Richard Jenkinson, Cari Whyne, Markku T Nousiainen
OBJECTIVES: This biomechanical study compared Vancouver B1 periprosthetic femur fractures fixed with either a locking plate and anterior allograft strut construct or an equivalent locking plate with locking attachment plates construct in paired cadaveric specimens. METHODS: After 9 pairs of cadaveric femora were implanted with a cemented primary total hip arthroplasty, an oblique osteotomy was created distal to the cement mantle. Femora underwent fixation with either: (1) a locking plate with anterior strut allograft (locking compression plating (LCP)-Allograft) or (2) a locking plate with 2 locking attachment plates (LAPs) (LCP-LAP)...
January 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/27957593/-rotation-or-derotation-osteotomy-of-the-tibia
#11
D Kolp, K Ziebarth, T Slongo
OBJECTIVE: Corrections for congenital or posttraumatic malrotation of the lower leg, considering alignment of the contralateral leg, with an osteotomy and fixation using locking compression plates (LCP). INDICATIONS: Posttraumatic deformity due to malunion. Increased tibial torsion in residual clubfoot deformity as long as the foot has been realigned. Idiopathic internal or external rotational deformity if the child is regularly tripping and falling, has psychological problems (other children making fun of the child because of the unusual gait), or is bothered by the deformity (age > 10 years, relative indication)...
December 12, 2016: Operative Orthopädie und Traumatologie
https://www.readbyqxmd.com/read/27940293/a-simple-rapid-and-cost-effective-process-for-production-of-latex-clearing-protein-to-produce-oligopolyisoprene-molecules
#12
R Andler, A Steinbüchel
Aiming at finding feasible alternatives for rubber waste disposal, the partial enzymatic degradation of poly(cis-1,4-isoprene)-containing materials represents a potential solution. The use of rubber-degrading enzymes and the biotransformation of rubber into new materials is limited by the high costs associated with the production and purification of the enzyme and the complexity of the process. This study presents a simple and low-cost procedure to obtain purified latex clearing protein (Lcp), an enzyme capable of cleaving the double bonds of poly(cis-1,4-isoprene) in presence of oxygen to produce different size of oligomers with terminal aldehyde and ketone groups, respectively...
January 10, 2017: Journal of Biotechnology
https://www.readbyqxmd.com/read/27935258/polyphenols-from-lonicera-caerulea-l-berry-attenuate-experimental-nonalcoholic-steatohepatitis-by-inhibiting-proinflammatory-cytokines-productions-and-lipid-peroxidation
#13
Shusong Wu, Satoshi Yano, Ayami Hisanaga, Xi He, Jianhua He, Kozue Sakao, De-Xing Hou
SCOPE: Nonalcoholic steatohepatitis (NASH) is a common disease that closely associated with inflammation and oxidative stress, and Lonicera caerulea L. polyphenols (LCP) are reported to possess both antioxidant and anti-inflammatory properties. This study aimed to study the protective effects and mechanisms of LCP on NASH in a high fat diet (HFD) plus carbon tetrachloride (CCL4 )-induced mouse model. METHODS AND RESULTS: Mice were fed with HFD containing LCP (0...
December 9, 2016: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/27922805/near-infrared-spectroscopy-analysis-of-coronary-chronic-total-occlusions
#14
Georgios E Christakopoulos, Judit Karacsonyi, Barbara Anna Danek, Aris Karatasakis, Aya Alame, Pratik Kalsaria, Atif Mohammed, Michele Roesle, Bavana V Rangan, Subhash Banerjee, Emmanouil S Brilakis
OBJECTIVE: To examine the presence and localization of lipid-core plaque (LCP) in coronary vessels with chronic total occlusions (CTOs) using near-infrared spectroscopy (NIRS). METHODS: NIRS imaging was performed after guidewire crossing of the occlusion in 15 patients with CTOs. LCP was defined as ≥2 adjacent 2 mm yellow blocks on the block chemogram. We also measured the maximum lipid-core burden index (LCBI) in a 4 mm length of artery (maxLCBI4mm). Large LCP was defined as maxLCBI4mm ≥500...
December 2016: Journal of Invasive Cardiology
https://www.readbyqxmd.com/read/27910660/low-noise-heterodyne-receiver-for-electron-cyclotron-emission-imaging-and-microwave-imaging-reflectometry
#15
B Tobias, C W Domier, N C Luhmann, C Luo, M Mamidanna, T Phan, A-V Pham, Y Wang
The critical component enabling electron cyclotron emission imaging (ECEI) and microwave imaging reflectometry (MIR) to resolve 2D and 3D electron temperature and density perturbations is the heterodyne imaging array that collects and downconverts radiated emission and/or reflected signals (50-150 GHz) to an intermediate frequency (IF) band (e.g. 0.1-18 GHz) that can be transmitted by a shielded coaxial cable for further filtering and detection. New circuitry has been developed for this task, integrating gallium arsenide (GaAs) monolithic microwave integrated circuits (MMICs) mounted on a liquid crystal polymer (LCP) substrate...
November 2016: Review of Scientific Instruments
https://www.readbyqxmd.com/read/27909754/dual-plate-fixation-on-distal-third-diaphyseal-fracture-of-the-humerus
#16
Jun-Ku Lee, Yun-Sung Choi, Young-Suk Sim, Dae-Sung Choi, Soo-Hong Han
INTRODUCTION: Displaced unstable distal third fractures of the humeral diaphysis are treated surgically through open reduction and internal fixation. Conventionally, surgeons prefer using long plates for secure fixation; however, we performed short plate dual plating for robust fixation that required a smaller incision and less dissection through an anterior approach. In this study, we report the results of dual plating of fractures of the humeral shaft, with radiographic evidence and clinical analysis...
December 1, 2016: International Orthopaedics
https://www.readbyqxmd.com/read/27898953/impact-of-improving-dietary-amino-acid-balance-for-lactating-sows-on-efficiency-of-dietary-amino-acid-utilization-and-transcript-abundance-of-genes-encoding-lysine-transporters-in-mammary-tissue
#17
L Huber, C F M de Lange, C W Ernst, U Krogh, N L Trottier
Lactating multiparous Yorkshire sows ( = 64) were used in 2 experiments to test the hypothesis that reducing dietary CP intake and improving AA balance through crystalline AA (CAA) supplementation improves apparent dietary AA utilization efficiency for milk production and increases transcript abundance of genes encoding Lys transporter proteins in mammary tissue. In Exp. 1, 40 sows were assigned to 1 of 4 diets: 1) high CP (HCP; 16.0% CP, as-fed basis; analyzed concentration), 2) medium-high CP (MHCP; 15.7% CP), 3) medium-low CP (MLCP; 14...
November 2016: Journal of Animal Science
https://www.readbyqxmd.com/read/27889044/leadless-pacemakers
#18
REVIEW
Mikhael F El-Chami, Faisal M Merchant, Angel R Leon
Leadless pacing is an emerging technology with the potential to significantly improve outcomes associated with the need for long-term pacing. Specifically, the major advantage of leadless systems is abolishing the need for transvenous leads and subcutaneous pockets, both of which account for most adverse events associated with traditional pacemakers. Two leadless pacemakers are currently available: the Nanostim (leadless cardiac pacemaker [LCP]) device (St. Jude Medical, Sylmar, California) and the Micra Transcatheter pacing system (Medtronic, Minneapolis, Minnesota)...
January 1, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/27885262/comparison-of-the-effect-on-bone-healing-process-of-different-implants-used-in-minimally-invasive-plate-osteosynthesis-limited-contact-dynamic-compression-plate-versus-locking-compression-plate
#19
Zichao Xue, Haitao Xu, Haoliang Ding, Hui Qin, Zhiquan An
Minimally invasive plate osteosynthesis (MIPO) has been widely accepted because of its satisfactory clinical outcomes. However, the implant construct that works best for MIPO remains controversial. Different plate designs result in different influence mechanisms to blood flow. In this study, we created ulnar fractures in 42 beagle dogs and fixed the fractures using MIPO. The dogs were randomly divided into two groups and were fixed with a limited contact dynamic compression plate (LC-DCP) or a locking compression plate (LCP)...
November 25, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27863995/tumor-targeted-delivery-of-sunitinib-base-enhances-vaccine-therapy-for-advanced-melanoma-by-remodeling-the-tumor-microenvironment
#20
Meirong Huo, Yan Zhao, Andrew Benson Satterlee, Yuhua Wang, Ying Xu, Leaf Huang
Development of an effective treatment against advanced tumors remains a major challenge for cancer immunotherapy. We have previously developed a potent mannose-modified lipid calcium phosphate (LCP) nanoparticle (NP)-based Trp2 vaccine for melanoma therapy, but because this vaccine can induce a potent anti-tumor immune response only during the early stages of melanoma, poor tumor growth inhibition has been observed in more advanced melanoma models, likely due to the development of an immune-suppressive tumor microenvironment (TME)...
January 10, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
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