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https://www.readbyqxmd.com/read/28927375/effects-of-lubrication-on-air-sealing-performance-of-a-pediatric-cuffed-tracheal-tube
#1
Hiroko Nishioka, Yutaka Usuda, Go Hirabayashi, Koichi Maruyama, Tomio Andoh
BACKGROUND: Lubrication of cuffed tracheal tubes (CTTs) reduces liquid leakage. However, it is not clear how cuff lubrication influences air leakage. We aimed to test the hypothesis that pretreatment with K-Y jelly, a water-soluble lubricant, would improve the air-sealing performance of pediatric CTTs in a model study. METHODS: We placed Parker Flex-Tip™ CTT with 4.0- and 5.0-mm internal diameter (ID) into a tracheal model with 9- and 12-mm ID. The tracheal model was connected to a test lung ventilated in pressure control mode...
September 19, 2017: BMC Anesthesiology
https://www.readbyqxmd.com/read/28900021/another-brick-in-the-wall-a-rhamnan-polysaccharide-trapped-inside-peptidoglycan-of-lactococcus-lactis
#2
Irina Sadovskaya, Evgeny Vinogradov, Pascal Courtin, Julija Armalyte, Mickael Meyrand, Efstathios Giaouris, Simon Palussière, Sylviane Furlan, Christine Péchoux, Stuart Ainsworth, Jennifer Mahony, Douwe van Sinderen, Saulius Kulakauskas, Yann Guérardel, Marie-Pierre Chapot-Chartier
Polysaccharides are ubiquitous components of the Gram-positive bacterial cell wall. In Lactococcus lactis, a polysaccharide pellicle (PSP) forms a layer at the cell surface. The PSP structure varies among lactococcal strains; in L. lactis MG1363, the PSP is composed of repeating hexasaccharide phosphate units. Here, we report the presence of an additional neutral polysaccharide in L. lactis MG1363 that is a rhamnan composed of α-l-Rha trisaccharide repeating units. This rhamnan is still present in mutants devoid of the PSP, indicating that its synthesis can occur independently of PSP synthesis...
September 12, 2017: MBio
https://www.readbyqxmd.com/read/28894111/induction-of-high-titred-non-neutralising-antibodies-by-self-adjuvanting-peptide-epitopes-derived-from-the-respiratory-syncytial-virus-fusion-protein
#3
Noushin Jaberolansar, Keith J Chappell, Daniel Watterson, Imogen M Bermingham, Istvan Toth, Paul R Young, Mariusz Skwarczynski
Respiratory syncytial virus (RSV) causes severe lower respiratory tract illness in infants and young children. The significant morbidity and mortality rates associated with RSV infection make an effective RSV vaccine development a priority. Two neutralising antibody binding sites, Ø and II, located on the pre-fusion RSV F glycoprotein are prime candidates for epitope-focused vaccine design. We report on a vaccine strategy that utilises a lipid core peptide (LCP) delivery system with self-adjuvanting properties in conjunction with either the antigenic site Ø or II (B cell epitopes) along with PADRE as a T helper cell epitope...
September 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28887213/bivalent-mucosal-peptide-vaccines-administered-using-the-lcp-carrier-system-stimulate-protective-immune-responses-against-streptococcus-pyogenes-infection
#4
Kai Schulze, Thomas Ebensen, Saranya Chandrudu, Mariusz Skwarczynski, Istvan Toth, Colleen Olive, Carlos A Guzman
Despite the broad knowledge about the pathogenicity of Streptococcus pyogenes there is still a controversy about the correlate of protection in GAS infections. We aimed in further improving the immune responses stimulated against GAS comparing different vaccine formulations including bis-(3',5')-cyclic dimeric adenosine monophosphate (c-di-AMP) and BPPCysMPEG, a derivative of the macrophage-activating lipopeptide (MALP-2), as adjuvants, respectively, to be administered with and without the universal T helper cell epitope P25 along with the optimized B cell epitope J14 of the M protein and B and T cell epitopes of SfbI...
September 5, 2017: Nanomedicine: Nanotechnology, Biology, and Medicine
https://www.readbyqxmd.com/read/28884253/assessing-transhumance-corridors-on-high-mountain-environments-by-least-cost-path-analysis-the-case-of-yak-herds-in-gilgit-baltistan-pakistan
#5
Maaz Maqsood Hashmi, Ludovico Frate, Syed Moazzam Nizami, Maria Laura Carranza
Mountain environments in the world host highly specialized flora and fauna which are vulnerable because of land use and climate change. Transhumance and other land use traditional practices are present in most of the mountains of the world, and management tools able to cope with new socioeconomic settings and environmental changes are urgently needed. During past centuries, yak (Bos grunniens) herding in Northern Pakistan involved the migration of herds to high mountain international rangelands, but the recent establishment of international borders breaks the traditional transhumance paths, promoting several ecological problems...
September 7, 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28875031/serial-millisecond-crystallography-of-membrane-and-soluble-protein-microcrystals-using-synchrotron-radiation
#6
Jose M Martin-Garcia, Chelsie E Conrad, Garrett Nelson, Natasha Stander, Nadia A Zatsepin, James Zook, Lan Zhu, James Geiger, Eugene Chun, David Kissick, Mark C Hilgart, Craig Ogata, Andrii Ishchenko, Nirupa Nagaratnam, Shatabdi Roy-Chowdhury, Jesse Coe, Ganesh Subramanian, Alexander Schaffer, Daniel James, Gihan Ketwala, Nagarajan Venugopalan, Shenglan Xu, Stephen Corcoran, Dale Ferguson, Uwe Weierstall, John C H Spence, Vadim Cherezov, Petra Fromme, Robert F Fischetti, Wei Liu
Crystal structure determination of biological macromolecules using the novel technique of serial femtosecond crystallography (SFX) is severely limited by the scarcity of X-ray free-electron laser (XFEL) sources. However, recent and future upgrades render microfocus beamlines at synchrotron-radiation sources suitable for room-temperature serial crystallography data collection also. Owing to the longer exposure times that are needed at synchrotrons, serial data collection is termed serial millisecond crystallography (SMX)...
July 1, 2017: IUCrJ
https://www.readbyqxmd.com/read/28875027/viscous-hydrophilic-injection-matrices-for-serial-crystallography
#7
Gabriela Kovácsová, Marie Luise Grünbein, Marco Kloos, Thomas R M Barends, Ramona Schlesinger, Joachim Heberle, Wolfgang Kabsch, Robert L Shoeman, R Bruce Doak, Ilme Schlichting
Serial (femtosecond) crystallography at synchrotron and X-ray free-electron laser (XFEL) sources distributes the absorbed radiation dose over all crystals used for data collection and therefore allows measurement of radiation damage prone systems, including the use of microcrystals for room-temperature measurements. Serial crystallography relies on fast and efficient exchange of crystals upon X-ray exposure, which can be achieved using a variety of methods, including various injection techniques. The latter vary significantly in their flow rates - gas dynamic virtual nozzle based injectors provide very thin fast-flowing jets, whereas high-viscosity extrusion injectors produce much thicker streams with flow rates two to three orders of magnitude lower...
July 1, 2017: IUCrJ
https://www.readbyqxmd.com/read/28862633/nanosecond-pump-probe-device-for-time-resolved-serial-femtosecond-crystallography-developed-at-sacla
#8
Minoru Kubo, Eriko Nango, Kensuke Tono, Tetsunari Kimura, Shigeki Owada, Changyong Song, Fumitaka Mafuné, Ken Miyajima, Yoshihiro Takeda, Jun Ya Kohno, Naoya Miyauchi, Takanori Nakane, Tomoyuki Tanaka, Takashi Nomura, Jan Davidsson, Rie Tanaka, Michio Murata, Takashi Kameshima, Takaki Hatsui, Yasumasa Joti, Richard Neutze, Makina Yabashi, So Iwata
X-ray free-electron lasers (XFELs) have opened new opportunities for time-resolved X-ray crystallography. Here a nanosecond optical-pump XFEL-probe device developed for time-resolved serial femtosecond crystallography (TR-SFX) studies of photo-induced reactions in proteins at the SPring-8 Angstrom Compact free-electron LAser (SACLA) is reported. The optical-fiber-based system is a good choice for a quick setup in a limited beam time and allows pump illumination from two directions to achieve high excitation efficiency of protein microcrystals...
September 1, 2017: Journal of Synchrotron Radiation
https://www.readbyqxmd.com/read/28840358/ectomycorrhizal-fungi-reduce-the-light-compensation-point-and-promote-carbon-fixation-of-pinus-thunbergii-seedlings-to-adapt-to-shade-environments
#9
Liang Shi, Jie Wang, Binhao Liu, Kazuhide Nara, Chunlan Lian, Zhenguo Shen, Yan Xia, Yahua Chen
We examined the effects of three ectomycorrhizal (ECM) symbionts on the growth and photosynthesis capacity of Japanese black pine (Pinus thunbergii) seedlings and estimated physiological and photosynthetic parameters such as the light compensation point (LCP), biomass, and phosphorus (Pi) concentration of P. thunbergii seedlings. Through this investigation, we documented a new role of ectomycorrhizal (ECM) fungi: enhancement of the survival and competitiveness of P. thunbergii seedlings under low-light condition by reducing the LCP of seedlings...
August 24, 2017: Mycorrhiza
https://www.readbyqxmd.com/read/28834823/biomechanical-analysis-of-the-proximal-femoral-locking-compression-plate-do-quality-of-reduction-and-screw-orientation-influence-construct-stability
#10
Ivan Zderic, Jong-Keon Oh, Karl Stoffel, Christoph Sommer, Tobias Helfen, Gaston Camino, R Geoff Richards, Sean E Nork, Boyko Gueorguiev
OBJECTIVES: To investigate biomechanically in a human cadaveric model the failure modes of the Proximal Femoral Locking Compression Plate (PF-LCP) and explore the underlying mechanism. METHODS: Twenty-four fresh-frozen paired human cadaveric femora with simulated unstable intertrochanteric fractures (AO/OTA 31-A3.3) were assigned to four groups with six specimens each for plating with PF-LCP. The groups differed in the quality of fracture reduction and plating fashion of the first and second proximal screws as follows: 1) anatomical reduction with on-axis screw placement; 2) anatomical reduction with off-axis screw placement; 3) malreduction with on-axis screw placement; 4) malreduction with off-axis screw placement...
August 22, 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/28830121/drugged-driving-in-wisconsin-oral-fluid-versus-blood
#11
Lorrine D Edwards, Katherine L Smith, Theodore Savage
A pilot project was conducted in Dane County, Wisconsin, to evaluate the frequency of individuals driving under the influence of drugs (DUID). Evidentiary blood specimens, collected from subjects arrested for Operating While Intoxicated (OWI), were compared to oral fluid (OF) results obtained with the Alere DDS2®, a handheld screening device. The project objectives were to evaluate (i) the Alere DDS2® for use by police officers in the field, (ii) the frequency of individuals DUID and drugs combined with alcohol among OWI cases, (iii) the differences between detecting drugs in OF and in blood, and (iv) the effect of the laboratory drug testing cancellation policy (LCP) when the blood alcohol concentration (BAC) exceeds 0...
July 1, 2017: Journal of Analytical Toxicology
https://www.readbyqxmd.com/read/28821148/a-pectic-polysaccharide-from-ligusticum-chuanxiong-promotes-intestine-antioxidant-defense-in-aged-mice
#12
Chao Huang, Xiyue Cao, Xingfu Chen, Yuping Fu, Yingguo Zhu, Zhengli Chen, Qihui Luo, Lixia Li, Xu Song, Renyong Jia, Zhongqiong Yin, Bin Feng, Yuanfeng Zou
The extensive prospects of polysaccharides in medicine and pharmaceuticals have elicited much interest. Ligusticum chuanxiong polysaccharides, previously extracted as neutral polysaccharides, exhibit antioxidant, anticancer, andantibacterial capacities in vitro. Here we show one pectic polysaccharide extracted from rhizome of L. chuanxiong(LCP-II-I). Structural analysis indicated its long homogalacturonan region is interrupted by rhamnogalacturonan type I, with arabinan and arabinogalactan type I as side chains...
October 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28814139/validation-of-a-brazilian-version-of-the-moral-sensitivity-questionnaire
#13
Carlise R Dalla Nora, Elma Lcp Zoboli, Margarida M Vieira
BACKGROUND: Moral sensitivity has been identified as a foundational component of ethical action. Diminished or absent moral sensitivity can result in deficient care. In this context, assessing moral sensitivity is imperative for designing interventions to facilitate ethical practice and ensure that nurses make appropriate decisions. OBJECTIVE: The main purpose of this study was to validate a scale for examining the moral sensitivity of Brazilian nurses. RESEARCH DESIGN: A pre-existing scale, the Moral Sensitivity Questionnaire, which was developed by Lützén, was used after the deletion of three items...
January 1, 2017: Nursing Ethics
https://www.readbyqxmd.com/read/28809637/-comparison-of-short-therm-results-of-conservative-versus-operative-treatment-of-distal-ulna-fractures-associated-with-distal-radius-fracture-treated-by-plate-osteosynthesis
#14
P Meluzinová, L Kopp, P Dráč, K Edelmann, P Obruba
PURPOSE OF THE STUDY The study aims to evaluate and compare the results of conservative and operative treatment of individual types of distal ulna fractures associated with distal radius fracture treated by plate osteosynthesis and to verify the conclusions of the other authors regarding the recommended therapeutic procedures in these fractures. MATERIAL AND METHODS In the period from 08/2013 to 09/2015, a total of 81 patients participated in the prospective randomised study, with the mean follow-up period of 24 months (6-36)...
2017: Acta Chirurgiae Orthopaedicae et Traumatologiae Cechoslovaca
https://www.readbyqxmd.com/read/28802419/recalcitrant-aseptic-atrophic-non-union-of-the-shaft-of-the-humerus-after-failure-of-surgical-treatment-management-by-excision-of-non-union-bone-grafting-and-stabilization-by-lcp-in-different-modes
#15
Sudhir Babhulkar, Sushrut Babhulkar, Aditya Vasudev
Non-union of the humeral shaft is infrequently noticed after surgical fixation. Sixty eight patients whose osteosynthesis of humeral shaft had failed leading to non-union were identified over a duration of 10 years from (January 2006 to December 2015). Clinical and radiographical follow-up was available for 64 patients (4 patients were lost for follow-up), with a mean age of 58 years (range 25-78 years). All patients had aseptic atrophic non-union of either: proximal shaft (n=12), mid shaft (n=38), and lower shaft (n=14)...
August 2017: Injury
https://www.readbyqxmd.com/read/28802417/augmentation-plating-in-management-of-failed-femoral-nailing
#16
Rahul Verma, Pulak Sharma, Sanjiv Gaur
INTRODUCTION: Non-union following interlocking nailing is a troubling complication in treatment of shaft femur fractures. There is no clear consensus on the treatment of this problem. This research was undertaken to study the role of augmentation plating combined with exchange nailing in such cases. PATIENTS AND METHODS: A prospective clinical study was undertaken from January 2010 to December 2015. Patients with aseptic femoral shaft non-union, with or without implant failure following intramedullary nailing were included in the study...
August 2017: Injury
https://www.readbyqxmd.com/read/28794904/qbd-based-approach-for-optimization-of-tenofovir-disoproxil-fumarate-loaded-liquid-crystal-precursor-with-improved-permeability
#17
Sharvil Patil, Chandrashekhar Kadam, Varsha Pokharkar
BCS class III drugs suffer from a drawback of low permeability even though they have high aqueous solubility. The objective of current work was to screen the suitability of glyceryl monooleate (GMO)/Pluronic F127 cubic phase liquid crystals precursors for permeation enhancement and in turn the bioavailability of tenofovir disoproxil fumarate (TDF), a BCS class III drug. Spray-drying method was used for preparation of TDF loaded liquid crystal precursors (LCP) consisting of GMO/Pluronic F127 and lactose monohydrate with an ability to in situ transform into stable cubic phases upon hydration...
November 2017: Journal of Advanced Research
https://www.readbyqxmd.com/read/28793905/the-liverpool-care-pathway-a-systematic-review-discarded-in-cancer-patients-but-good-enough-for-dying-nursing-home-patients
#18
Bettina S Husebø, Elisabeth Flo, Knut Engedal
BACKGROUND: The Liverpool Care Pathway (LCP) is an interdisciplinary protocol, aiming to ensure that dying patients receive dignified and individualized treatment and care at the end-of-life. LCP was originally developed in 1997 in the United Kingdom from a model of cancer care successfully established in hospices. It has since been introduced in many countries, including Norway. The method was withdrawn in the UK in 2013. This review investigates whether LCP has been adapted and validated for use in nursing homes and for dying people with dementia...
August 9, 2017: BMC Medical Ethics
https://www.readbyqxmd.com/read/28790538/comparison-of-plate-nail-and-external-fixation-in-the-management-of-diaphyseal-fractures-of-the-humerus
#19
Michele Bisaccia, Luigi Meccariello, Giuseppe Rinonapoli, Giuseppe Rollo, Marco Pellegrino, Andrea Schiavone, Cristina Ibáñez Vicente, Pellegrino Ferrara, Marco Filipponi, Auro Caraffa
INTRODUCTION: Humeral shaft fractures are quite common in orthopedics and represent 1-3% of adult fractures. The surgical treatment is the a better choice in order to obtain a reduction and stable alignment and to prevent the complications. The goal of this study was to compare the three techniques (IMN, LCP and EF) in the treatment of diaphyseal fractures of the humerus in the adult patient. MATERIALS AND METHODS: We examined 79 patients with diaphyseal fractures of the humerus...
April 2017: Medical Archives
https://www.readbyqxmd.com/read/28752182/the-challenging-surgical-treatment-of-closed-distal-humerus-fractures-in-elderly-and-octogenarian-patients-radiographic-and-functional-outcomes-with-a-minimum-follow-up-of-24%C3%A2-months
#20
Carlo Biz, Silvano Pierluigi Sperotto, Nicola Maschio, Matteo Borella, Claudio Iacobellis, Pietro Ruggieri
INTRODUCTION: The main purpose of this retrospective, non-randomized, case series study was to evaluate the clinical and radiographic outcomes of distal humerus fractures (DHFs) in a consecutive series of elderly patients operatively treated by two surgeons, and second, to identify proper indications for two elderly age ranges and two fracture pattern groups. MATERIALS AND METHODS: From January 2009 to June 2014, 51 patients (pts) underwent open reduction and internal fixation (ORIF) using the locking compression plate (LCP) distal humerus plate (DHP) system at our institution...
July 27, 2017: Archives of Orthopaedic and Trauma Surgery
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