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https://www.readbyqxmd.com/read/29451416/refinement-of-in-vivo-optical-imaging-development-of-a-real-time-respiration-monitoring-system
#1
Ana L Gomes, Stuart Gilchrist, Veerle Kersemans, Marcus Westcott, Sean Smart
In vivo optical imaging enables detection and quantification of light-emitting compounds from the whole body in small animals such as the mouse, but it typically requires the use of anaesthetics for subject immobilisation due to long exposure times. Excessively deep anaesthesia can result in unacceptably compromised physiology, whilst excessively light anaesthesia can result in animals waking up. Here we report a respiratory monitoring setup for an in vivo bioluminescence and fluorescence imaging device which simultaneously allows real-time adaptive control of anaesthesia depth in multiple animals to (i) potentially increase the consistency between animals, (ii) ensure animals are maintained within minimally intrusive, adequate anaesthetic plane and (iii) provide a valuable refinement strategy for a common challenge within animal-based research...
January 1, 2018: Laboratory Animals
https://www.readbyqxmd.com/read/29446787/the-treatment-of-femoral-fractures-in-children-with-cerebral-palsy
#2
P Persiani, M Murgia, F M Ranaldi, O Mazza, M Mariani, M Crostelli, C Villani
OBJECTIVE: The purpose of this study is to retrospectively evaluate a group of children affected by cerebral palsy with a recent femoral fracture, and to analyse the results and complications in relation to the treatment used. MATERIALS AND METHODS: The analysis was performed on 36 children (21 M, 15 F, 8-14 years old) with cerebral palsy (7 diplegia, 28 tetraparesis, 1 hemiplegia) with a metaphyseal or a diaphyseal femoral fracture. The patients were subdivided into two groups according to their Gross Motor Function Classification System (GMFCS) level: level 2-3 (9 patients) and level 4-5 (27 patients), evaluating the presence of complications and malunions for each group at the end of each follow up...
January 2018: La Clinica Terapeutica
https://www.readbyqxmd.com/read/29446317/credentialing-of-radiotherapy-centres-in-australasia-for-trog-09-02-chisel-a-phase-iii-clinical-trial-on-stereotactic-ablative-body-radiotherapy-of-early-stage-lung-cancer
#3
Tomas Kron, Brent Chesson, Nicholas Hardcastle, Melissa Crain, Natalie Clements, Mark Burns, David Ball
OBJECTIVE: A randomised clinical trial comparing Stereotactic Ablative Body Radiotherapy (SABR) with conventional radiotherapy for early stage lung cancer has been conducted in Australia and New Zealand under the auspices of the TransTasman Radiation Oncology Group (NCT01014130). We report on the technical credentialing program as prerequisite for centres joining the trial. METHODS: Participating centres were asked to develop treatment plans for two test cases to assess their ability to create plans according to protocol...
February 15, 2018: British Journal of Radiology
https://www.readbyqxmd.com/read/29430924/optical-voltage-sensing-using-dna-origami
#4
Elisa Alina Hemmig, Clare Fitzgerald, Christopher Maffeo, Lisa Hecker, Sarah Elisabeth Ochmann, Aleksei Aksimentiev, Philip Tinnefeld, Ulrich F Keyser
We explore the potential of DNA nanotechnology for developing novel optical voltage sensing nano-devices that convert a local change of electric potential into optical signals. As a proof-of-concept of the sensing mechanism, we assembled voltage responsive DNA origami structures labelled with a single pair of FRET dyes. The DNA structures were reversibly immobilised on a nanocapillary tip and underwent controlled structural changes upon application of an electric field. The applied field was monitored through a change in FRET efficiency...
February 12, 2018: Nano Letters
https://www.readbyqxmd.com/read/29430265/nonoperative-treatment-of-midshaft-clavicle-fractures-in-adults
#5
REVIEW
Sören Waldmann, Emanuel Benninger, Christoph Meier
Clavicle fractures are among the most common skeletal injuries accounting for 2-5% of all adult fractures. Historically, nonoperative treatment of midshaft clavicular fractures was considered the gold standard of care. Furthermore, nonoperative treatment has been challenged by an increasing popularity and rate of surgical fixations in recent years despite a lack of clear evidence in the current literature. Most fractures are suitable for conservative treatment. There is solid evidence in favour of nonoperative treatment for fractures with a displacement of less than 2cm and remaining contact of the bone fragments...
2018: Open Orthopaedics Journal
https://www.readbyqxmd.com/read/29427882/enzymatic-fuel-cells-with-an-oxygen-resistant-variant-of-pyranose-2-oxidase-as-anode-biocatalyst
#6
Samet Şahin, Thanyaporn Wongnate, Litavadee Chuaboon, Pimchai Chaiyen, Eileen Hao Yu
In enzymatic fuel cells (EnFCs), hydrogen peroxide formation is one of the main problems when enzymes, such as, glucose oxidase (GOx) is used due to the conversion of oxygen to hydrogen peroxide in the catalytic reaction. To address this problem, we here report the first demonstration of an EnFC using a variant of pyranose-2-oxidase (P2O-T169G) which has been shown to have low activity towards oxygen. A simple and biocompatible immobilisation approach incorporating multi-walled-carbon nanotubes within ferrocene (Fc)-Nafion film was implemented to construct EnFCs...
February 1, 2018: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/29410077/simplified-internal-fixation-of-fifth-metacarpal-neck-fractures
#7
L Amsallem, J Pierrart, T Bihel, J Sekri, T Lafosse, E Masmejean, D Delgrande
BACKGROUND: Fifth metacarpal neck fractures (boxer's fractures) are common injuries that contribute 20% of all hand fractures. Divergent percutaneous pinning (bouquet fixation) as described by Foucher has gained popularity but is challenging and at times arduous, as it requires the insertion of several slender K-wires into a narrow medullary canal. Here, we report on a simplified technique in which a single thick K-wire is inserted. TECHNIQUE: An 18/10 K-wire is bent at one end then mounted on a drill chuck...
January 31, 2018: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/29409429/a-prospective-study-of-acute-undisplaced-and-minimally-displaced-scaphoid-fractures-managed-by-aggressive-conservative-approach
#8
Anil K Bhat, Ashwath M Acharya, S Manoh, Vinay Kamble
BACKGROUND: To identify acute un-displaced and minimally displaced scaphoid fractures which are unlikely to unite with non-operative treatment at six weeks with CT scan and stabilize them with percutaneous screw fixation with the aim of preventing non-union. METHODS: A scaphoid series radiographs of wrist were obtained for patients with undisplaced or minimally displaced fractures and were immobilized in a thumb spica cast for six weeks. At six weeks, CT scan was done for patients showing doubtful signs of clinical and radiographic union...
March 2018: Journal of Hand Surgery Asian-Pacific Volume
https://www.readbyqxmd.com/read/29407783/the-significance-of-nanomaterial-post-exposure-responses-in-daphnia-magna-standard-acute-immobilisation-assay-example-with-testing-tio2-nanoparticles
#9
Sara Novak, Anita Jemec Kokalj, Matej Hočevar, Matjaž Godec, Damjana Drobne
One of the most widely used aquatic standarized tests for the toxicity screening of chemicals is the acute toxicity test with the freshwater crustacean Daphnia magna, which has also been applied in the toxicity screening of manufactured nanoparticles (NPs). However, in the case of non-soluble NPs most of the results of this test have showed no effect. The aim of the work presented here was to modify the standardized test by the least possible extent to make it more sensitive for non-soluble particles. The standard acute immobilisation assay with daphnids was modified by prolonging the exposure period and by measuring additional endpoints...
February 1, 2018: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/29387471/subscapularis-tendon-tears-management-and-arthroscopic-repair
#10
Brett A Lenart, Jonathan B Ticker
Tears of the subscapularis tendon have been under-recognised until recently. Therefore, a high index of suspicion is essential for diagnosis.A directed physical examination, including the lift-off, belly-press and increased passive external rotation can help identify tears of the subscapularis.All planes on MR imaging should be carefully evaluated to identify tears of the subscapularis, retraction, atrophy and biceps pathology.Due to the tendency of the tendon to retract medially, acute and traumatic full-thickness tears should be repaired...
December 2017: EFORT Open Reviews
https://www.readbyqxmd.com/read/29383646/the-efficacy-of-bacterial-species-to-decolourise-reactive-azo-anthroquinone-and-triphenylmethane-dyes-from-wastewater-a-review
#11
Saurabh Mishra, Abhijit Maiti
The industrial dye-contaminated wastewater has been considered as the most complex and hazardous in terms of nature and composition of toxicants that can cause severe biotic risk. Reactive azo, anthroquinone and triphenylmethane dyes are mostly used in dyeing industries; thus, the unfixed hydrolysed molecules of these dyes are commonly found in wastewater. In this regard, bacterial species have been proved to be highly effective to treat wastewater containing reactive dyes and heavy metals. The bio-decolourisation of dye occurs either by adsorption or through degradation in bacterial metabolic pathways under optimised environmental conditions...
January 30, 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29375007/recognition-mechanism-of-wilms-tumour-suppressor-protein-and-dna-triplets-insights-from-molecular-dynamics-simulation-and-free-energy-analysis
#12
Ling-Fei Zhang, Qing-Chuan Zheng, Hong-Xing Zhang
The Wilms' tumour suppressor protein (WT1) plays a multifaceted role in human cancer processes. Mutations on its DNA recognition domain could lead to Denys-Drash syndrome (DDS), and alternate splicing results in insertion of the tripeptide Lys-Thr-Ser (KTS) between the third and fourth zinc fingers (ZFs), leading to changes in the DNA-binding function. However, detailed recognition mechanisms of the WT1-DNA complex have not been explored. To clarify the mutational effects upon WT1 towards DNA binding at the atomic level, molecular dynamics (MD) simulations and the molecular mechanics/Poisson Boltzmann surface area (MM/PBSA) method were employed...
January 29, 2018: Journal of Biomolecular Structure & Dynamics
https://www.readbyqxmd.com/read/29374098/social-rank-affects-the-haematologic-profile-in-red-deer-hinds
#13
Francisco Ceacero, Enrique Gaspar-López, Tomás Landete-Castillejos, Laureano Gallego, Andrés J García
We studied the effects of social rank on the haematologic profile in a herd of 24 female Iberian red deer hinds. Social rank hierarchy was determined and blood samples were taken and analysed. After adjusting for age and body mass, dominance ranking showed a significant negative effect (ie, lower values in dominant hinds) on white blood cell (WBC) count, haemoglobin and haematocrit. Our results are similar to those reported for stressed individuals due to physical immobilisation, but do not support the predicted enhanced erythropoiesis due to higher levels of androgens...
January 26, 2018: Veterinary Record
https://www.readbyqxmd.com/read/29367029/comparison-of-three-surgical-fixation-methods-for-dual-bone-forearm-fractures-in-older-children-a-retrospective-cohort-study
#14
Wenhao Zheng, Zhenyu Tao, Chunhui Chen, Chuanxu Zhang, Hui Zhang, Zhenhua Feng, Hang Li, Liang Cheng, Leyi Cai, Hua Chen
BACKGROUND: The aim of this study was to compare the outcomes of dual ESIN (D-ESIN) fixation, hybrid fixation, and open reduction and dual plate (d-plate) fixation in the treatment of dual-bone forearm fractures in children aged 10-16 years. MATERIALS AND METHODS: 137 patients with dual-bone forearm fractures (48 patients in the D-ESIN group, 45 patients in the hybrid group, and 44 patients in the d-plate group) were reviewed. Duration of surgery, length of incision, intraoperative blood loss, intraoperative times of fluoroscopy, and duration of postoperative immobilisation were recorded...
January 20, 2018: International Journal of Surgery
https://www.readbyqxmd.com/read/29361295/treatment-of-acute-achilles-tendon-rupture-with-the-panda-rope-bridge-technique
#15
Liangjun Yin, Yahong Wu, Changsong Ren, Yizhong Wang, Ting Fu, Xiangjun Cheng, Ruidong Li, Mao Nie, Yuan Mu
INTRODUCTION: Although nonsurgical methods and many surgical techniques have been developed for repairing a ruptured Achilles tendon, there is no consensus on its best treatment. In this article, a novel minimally invasive technique called the Panda Rope Bridge Technique (PRBT) is described. METHODS: Patient with acute Achilles tendon rupture was operated on in the prone position. The PRBT begin with making the proximal bridge anchor (Krackow sutures in the myotendinous junction), the distal bridge anchor (two suture anchors in the calcaneus bone) and the ropes (threads of the suture anchors) stretched between the anchor sites...
January 16, 2018: Injury
https://www.readbyqxmd.com/read/29341525/-general-internal-medicine%C3%A2-2017-scientific-breakthroughs-in-ambulatory-care
#16
Alexandre Gouveia, Lionel De Alencastro, Yvonne Fierz, Lionel Koehli, Alexandre Béguelin, Olivier Pasche, Kevin Selby, Patrick Bodenmann
Bariatric surgery improves glycemic control in obese patients with diabetes type 2. Dual antiplatelet therapy can be maintained beyond 12 months after a myocardial infarction. Levothyroxine is not beneficial among patients ≥ 65 years that have subclinical hypothyroidism. Prophylactic anticoagulation in lower limb immobilisation should be reserved only for patients with a high risk of thromboembolism. A diagnosis of asthma should be initially confirmed by a spirometry if clinically suspected. A proton pump inhibitor is indicated for patients ≥ 65 years that are treated with aspirin...
January 17, 2018: Revue Médicale Suisse
https://www.readbyqxmd.com/read/29339569/experimental-determination-of-configurational-entropy-in-a-two-dimensional-liquid-under-random-pinning
#17
Ian Williams, Francesco Turci, James E Hallett, Peter Crowther, Chiara Cammarota, Giulio Biroli, C Patrick Royall
A quasi two-dimensional colloidal suspension is studied under the influence of immobilisation (pinning) of a random fraction of its particles. We introduce a novel experimental method to perform random pinning and, with the support of numerical simulation, we find that increasing the pinning concentration smoothly arrests the system, with a cross-over from a regime of high mobility and high entropy to a regime of low mobility and low entropy. At the local level, we study fluctuations in area fraction and concentration of pins and map them to entropic structural signatures and local mobility, obtaining a measure for the local entropic fluctuations of the experimental system...
January 17, 2018: Journal of Physics. Condensed Matter: An Institute of Physics Journal
https://www.readbyqxmd.com/read/29319411/cantilever-nanobiosensor-using-tyrosinase-to-detect-atrazine-in-liquid-medium
#18
Janine Martinazzo, Daniela K Muenchen, Alexandra N Brezolin, Alana M Cezaro, Aline A Rigo, Alexandra Manzoli, Lucélia Hoehne, Fábio L Leite, Juliana Steffens, Clarice Steffens
The aim of this study was to develop a cantilever nanobiosensor for atrazine detection in liquid medium by immobilising the biological recognition element (tyrosinase vegetal extract) on its surface with self-assembled monolayers using gold, 16-mercaptohexadecanoic acid, 1-ethyl-3-[3-dimethylaminopropyl] carbodiimide hydrochloride/n-hydroxysuccinimide. Cantilever nanobiosensors presented a surface compression tension increase when atrazine concentrations were increased, with a limit of detection and limit of quantification of 7...
January 10, 2018: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
https://www.readbyqxmd.com/read/29306832/ecotoxicological-potential-of-the-biocides-terbutryn-octhilinone-and-methylisothiazolinone-underestimated-risk-from-biocidal-pathways
#19
Simon Kresmann, Arokia Hansel Rajan Arokia, Christoph Koch, Bernd Sures
The use of biocides by industry, agriculture and households increased throughout the last two decades. Many new applications with known substances enriched the variety of biocidal pollution sources for the aquatic environment. While agriculture was the major source for a long time, leaching from building facades and preservation of personal care and cleaning products was identified as new sources in the last few years. With the different usage forms of biocidal products the complexity of legislative regulation increased as well...
January 4, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29295505/preparation-and-optimisation-of-cross-linked-enzyme-aggregates-using-native-isolate-white-rot-fungi-trametes-versicolor-and-fomes-fomentarius-for-the-decolourisation-of-synthetic-dyes
#20
Martina Vršanská, Stanislava Voběrková, Ana María Jiménez Jiménez, Vladislav Strmiska, Vojtěch Adam
The key to obtaining an optimum performance of an enzyme is often a question of devising a suitable enzyme and optimisation of conditions for its immobilization. In this study, laccases from the native isolates of white rot fungi Fomes fomentarius and/or Trametes versicolor, obtained from Czech forests, were used. From these, cross-linked enzyme aggregates (CLEA) were prepared and characterised when the experimental conditions were optimized. Based on the optimization steps, saturated ammonium sulphate solution (75 wt...
December 23, 2017: International Journal of Environmental Research and Public Health
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