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https://www.readbyqxmd.com/read/28934795/comparisons-of-lesion-volumes-and-shapes-produced-by-a-radiofrequency-system-with-a-cooled-a-protruding-or-a-monopolar-probe
#1
David L Cedeno, Alejandro Vallejo, Courtney A Kelley, Dana M Tilley, Nitesh Kumar
BACKGROUND: Radiofrequency (RF) ablation for denervation has been utilized for decades in chronic pain management. This relies on the proper targeting of the affected nerve which may be obtained by creating an ablation lesion with a shape and volume that optimizes targeting. Various systems designed to improve lesion size are available. These include cooling the active tip (cooled-RF) and protruding the RF electrode outside the active tip (PERF). OBJECTIVES: This study compares lesion volumes of 3 commercially available RF systems: cooled-RF, "V" shaped active cannula and protruding electrode (18 g and 20 g), and monopolar RF (MRF; 16 g, 18 g, and 20 g)...
September 2017: Pain Physician
https://www.readbyqxmd.com/read/28934377/the-environmental-acinetobacter-baumannii-isolate-dsm30011-reveals-clues-into-the-preantibiotic-era-genome-diversity-virulence-potential-and-niche-range-of-a-predominant-nosocomial-pathogen
#2
Guillermo D Repizo, Alejandro M Viale, Vítor Borges, María M Cameranesi, Najwa Taib, Martín Espariz, Céline Brochier-Armanet, João Paulo Gomes, Suzana P Salcedo
Acinetobacter baumannii represents nowadays an important nosocomial opportunistic pathogen whose reservoirs outside the clinical setting are obscure. Here, we traced the origins of the collection strain A. baumannii DSM30011 to an isolate first reported in 1944, obtained from the enriched microbiota responsible of the aerobic decomposition of the resinous desert shrub guayule. Whole-genome sequencing and phylogenetic analysis based on core genes confirmed DSM30011 affiliation to A. baumannii. Comparative studies with 32 complete A...
September 1, 2017: Genome Biology and Evolution
https://www.readbyqxmd.com/read/28934105/an-architecture-for-on-line-measurement-of-the-tip-clearance-and-time-of-arrival-of-a-bladed-disk-of-an-aircraft-engine
#3
José Miguel Gil-García, Alejandro Solís, Gerardo Aranguren, Joseba Zubia
Safety and performance of the turbo-engine in an aircraft is directly affected by the health of its blades. In recent years, several improvements to the sensors have taken place to monitor the blades in a non-intrusive way. The parameters that are usually measured are the distance between the blade tip and the casing, and the passing time at a given point. Simultaneously, several techniques have been developed that allow for the inference-from those parameters and under certain conditions-of the amplitude and frequency of the blade vibration...
September 21, 2017: Sensors
https://www.readbyqxmd.com/read/28933324/photobacterium-toruni-sp-nov-a-bacterium-isolated-from-diseased-farmed-fish
#4
Alejandro M Labella, David R Arahal, Teresa Lucena, Manuel Manchado, Dolores Castro, Juan J Borrego
Three bacterial strains were isolated from liver and spleen of diseased farmed redbanded seabream (Pagrus auriga) in south-west Spain. Their partial 16S rRNA gene sequences clustered within those of the genus Photobacterium, showing high similarity (98.6-99.3 %) to the type strains of Photobacterium iliopiscarium, P. piscicola, P. kishitanii, P. aquimaris and P. phosphoreum. Multilocus sequence analysis using six housekeeping genes (gapA, topA, mreB, ftsZ, gyrB and 16S rRNA) confirmed the new strains as forming an independent branch with a bootstrap value of 100, likely to represent a novel species...
September 21, 2017: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/28932993/oxygen-therapy-with-high-flow-nasal-cannula-as-an-effective-treatment-for-perioperative-pneumocephalus-case-illustrations-and-pathophysiological-review
#5
Jason L Siegel, Karen Hampton, Alejandro A Rabinstein, Diane McLaughlin, Jose L Diaz-Gomez
Pneumocephalus (PNC) is a condition in which when air is trapped inside the intracranial vault. The causes are varied, but include trauma and intracranial surgery. Treatment of PNC typically consists of augmenting patient oxygenation with the attempt of washing out pulmonary nitrogen, creating a gradient in which nitrogen in the intracranial air bubble diffuses out of the lungs via the blood. Though several high flow methods have been tested, the ideal mode of oxygenation has not fully been investigated. Here we present 3 cases of post-operative PNC who we felt were symptomatic from PNC...
September 20, 2017: Neurocritical Care
https://www.readbyqxmd.com/read/28932982/cerebral-fat-embolism-recognition-complications-and-prognosis
#6
Daniel Agustín Godoy, Mario Di Napoli, Alejandro A Rabinstein
Fat embolism syndrome (FES) is a rare syndrome caused by embolization of fat particles into multiple organs including the brain. It typically manifests with petechial rash, deteriorating mental status, and progressive respiratory insufficiency, usually occurring within 24-48 h of trauma with long-bone fractures or an orthopedic surgery. The diagnosis of FES is based on clinical and imaging findings, but requires exclusion of alternative diagnoses. Although there is no specific treatment for FES, prompt recognition is important because it can avoid unnecessary interventions and clarify prognosis...
September 20, 2017: Neurocritical Care
https://www.readbyqxmd.com/read/28932939/the-thumb-domain-is-not-essential-for-the-catalytic-action-of-holama-dna-polymerase
#7
Angela Gala Morena Gatius, Fabrizio Dal Piaz, Alejandro Hochkoeppler
A structural and kinetic characterization of a fragment of the HoLaMa DNA polymerase is presented here. In particular, a truncated form of HoLaMa, devoid of a consistent portion of the thumb domain, was isolated and purified. This HoLaMa fragment, denoted as ΔNter-HoLaMa, is surprisingly competent in catalyzing DNA extension, albeit featuring a kcat one order of magnitude lower than the corresponding kinetic constant of its full-length counterpart. The conformational rearrangements, if any, of enzyme tryptophanes triggered by DNA binding or extension were assayed under pre-steady-state conditions...
September 20, 2017: Protein Journal
https://www.readbyqxmd.com/read/28932739/agonist-binding-to-chemosensory-receptors-a-systematic-bioinformatics-analysis
#8
Fabrizio Fierro, Eda Suku, Mercedes Alfonso-Prieto, Alejandro Giorgetti, Sven Cichon, Paolo Carloni
Human G-protein coupled receptors (hGPCRs) constitute a large and highly pharmaceutically relevant membrane receptor superfamily. About half of the hGPCRs' family members are chemosensory receptors, involved in bitter taste and olfaction, along with a variety of other physiological processes. Hence these receptors constitute promising targets for pharmaceutical intervention. Molecular modeling has been so far the most important tool to get insights on agonist binding and receptor activation. Here we investigate both aspects by bioinformatics-based predictions across all bitter taste and odorant receptors for which site-directed mutagenesis data are available...
2017: Frontiers in Molecular Biosciences
https://www.readbyqxmd.com/read/28931886/value-of-measuring-anti-carbamylated-protein-antibodies-for-classification-on-early-arthritis-patients
#9
Cristina Regueiro, Laura Nuño, Ana M Ortiz, Diana Peiteado, Alejandro Villalba, Dora Pascual-Salcedo, Ana Martínez-Feito, Isidoro González-Alvaro, Alejandro Balsa, Antonio González
Classification of patients with rheumatoid arthritis (RA) as quickly as possible improves their prognosis. This reason motivates specially dedicated early arthritis (EA) clinics. Here, we have used 1062 EA patients with two years of follow-up to explore the value of anti-carbamylated protein (anti-CarP) antibodies, a new type of RA specific autoantibodies, for classification. Specifically, we aimed to determine whether the addition of anti-CarP antibodies to IgM rheumatoid factor (RF) and anti-cyclic citrullinated peptide (anti-CCP) antibodies, which are helpful in RA classification, improves it or not...
September 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28931840/potential-bias-of-daily-soil-co2-efflux-estimates-due-to-sampling-time
#10
Alejandro Cueva, Stephen H Bullock, Eulogio López-Reyes, Rodrigo Vargas
Soil respiration (Rs) has been usually measured during daylight hours using manual chambers. This approach assumes that measurements made during a typical time interval (e.g., 9 to 11 am) represent the mean daily value; locally, this may not always be correct and could result in systematic bias of daily and annual Rs budgets. We propose a simple method, based on the temporal stability concept, to determine the most appropriate time of the day for manual measurements to capture a representative mean daily Rs value...
September 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28931282/crystallization-and-colloidal-stabilization-of-ca-oh-2-in-the-presence-of-nopal-juice-opuntia-ficus-indica-implications-in-architectural-heritage-conservation
#11
Carlos Rodriguez-Navarro, Encarnacion Ruiz-Agudo, Alejandro Burgos-Cara, Kerstin Elert, Eric F Hansen
Hydrated lime (Ca(OH)2) is a vernacular art and building material produced following slaking of CaO in water. If excess water is used, a slurry, called lime putty forms, which has been the preferred craftsman selection for formulating lime mortars since Roman times. A variety of natural additives were traditionally added to the lime putty to improve its quality. The mucilaginous juice extracted from nopal cladodes has been and still is used as additive incorporated in the slaking water for formulation of lime mortars and plasters both in ancient Mesoamerica as well as in the USA Southwest...
September 20, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28930993/confocal-imaging-of-neuropeptide-y-phluorin-a-technique-to-visualize-insulin-granule-exocytosis-in-intact-murine-and-human-islets
#12
Madina Makhmutova, Tao Liang, Herbert Gaisano, Alejandro Caicedo, Joana Almaça
Insulin secretion plays a central role in glucose homeostasis under normal physiological conditions as well as in disease. Current approaches to study insulin granule exocytosis either use electrophysiology or microscopy coupled to the expression of fluorescent reporters. However most of these techniques have been optimized for clonal cell lines or require dissociating pancreatic islets. In contrast, the method presented here allows for real time visualization of insulin granule exocytosis in intact pancreatic islets...
September 13, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28930966/bilateral-pulmonary-emboli-and-extensive-inferior-vena-cava-thrombosis-in-the-setting-of-large-subcapsular-hematoma-and-liver-laceration-after-blunt-trauma
#13
Alejandro Betancourt-Ramirez, Soraya SMolero, Patrizio Petrone, Corrado P Marini, Heidi L Frankel
No abstract text is available yet for this article.
October 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/28930659/group-1-innate-lymphoid-cell-lineage-identity-is-determined-by-a-cis-regulatory-element-marked-by-a-long-non-coding-rna
#14
Walter K Mowel, Sam J McCright, Jonathan J Kotzin, Magalie A Collet, Asli Uyar, Xin Chen, Alexandra DeLaney, Sean P Spencer, Anthony T Virtue, EnJun Yang, Alejandro Villarino, Makoto Kurachi, Margaret C Dunagin, Gretchen Harms Pritchard, Judith Stein, Cynthia Hughes, Diogo Fonseca-Pereira, Henrique Veiga-Fernandes, Arjun Raj, Taku Kambayashi, Igor E Brodsky, John J O'Shea, E John Wherry, Loyal A Goff, John L Rinn, Adam Williams, Richard A Flavell, Jorge Henao-Mejia
Commitment to the innate lymphoid cell (ILC) lineage is determined by Id2, a transcriptional regulator that antagonizes T and B cell-specific gene expression programs. Yet how Id2 expression is regulated in each ILC subset remains poorly understood. We identified a cis-regulatory element demarcated by a long non-coding RNA (lncRNA) that controls the function and lineage identity of group 1 ILCs, while being dispensable for early ILC development and homeostasis of ILC2s and ILC3s. The locus encoding this lncRNA, which we termed Rroid, directly interacted with the promoter of its neighboring gene, Id2, in group 1 ILCs...
September 19, 2017: Immunity
https://www.readbyqxmd.com/read/28930479/the-case-of-missing-airways-in-copd
#15
Alejandro A Diaz
No abstract text is available yet for this article.
September 20, 2017: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/28929981/the-presence-of-acylated-ghrelin-during-in-vitro-maturation-of-bovine-oocytes-induces-cumulus-cell-dna-damage-and-apoptosis-and-impairs-early-embryo-development
#16
Matias A Sirini, Juan Mateo Anchordoquy, Juan Patricio Anchordoquy, Ana M Pascua, Noelia Nikoloff, Ana Carranza, Alejandro E Relling, Cecilia C Furnus
The aim of this study was to investigate the effects of acylated ghrelin supplementation during in vitro maturation (IVM) of bovine oocytes. IVM medium was supplemented with 20, 40 or 60 pM acylated ghrelin concentrations. Cumulus expansion area and oocyte nuclear maturation were studied as maturation parameters. Cumulus-oocyte complexes (COC) were assessed with the comet, apoptosis and viability assays. The in vitro effects of acylated ghrelin on embryo developmental capacity and embryo quality were also evaluated...
September 20, 2017: Zygote: the Biology of Gametes and Early Embryos
https://www.readbyqxmd.com/read/28929761/the-reaction-of-methyl-fluoroformyl-peroxycarbonate-fc-o-ooc-o-och3-with-cl-atoms-formation-of-hydro-chlorofluoro-peroxides
#17
Matias Berasategui, Gustavo Alejandro Argüello, Maxi Alberto Burgos Paci
The products following Cl atom initiated reactions of FC(O)OOC(O)OCH3 in 50-760 Torr of N2 at 296 K were investigated using FTIR. Reaction of Cl atoms with methyl fluoroformyl peroxycarbonate proceeds mainly via attack at the methyl group, forming FC(O)OOC(O)OCH2˙ radicals. Further reaction of this kind of radicals with Cl2 forms three new compounds: FC(O)OOC(O)OCH2Cl; FC(O)OOC(O)OCHCl2 and FC(O)OOC(O)OCCl3, whose existence was characterized experimentally by FTIR spectroscopy assisted with ab-initio calculations at the B3LYP/6-31++G(d,p) level...
September 20, 2017: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/28929524/off-pump-cabg-with-lower-sternotomy-in-a-patient-with-dialysis-access-graft-crossing-the-sternum
#18
Michael Magarakis, Tomas A Salerno, Alejandro E Macias, Nicolas A Brozzi
No abstract text is available yet for this article.
September 20, 2017: Journal of Cardiac Surgery
https://www.readbyqxmd.com/read/28929196/percutaneous-liver-biopsy-and-revised-coagulation-guidelines-a-9-year-experience
#19
Douglas R Kitchin, Alejandro Munoz Del Rio, Michael Woods, Lucas Ludeman, J Louis Hinshaw
PURPOSE: To retrospectively review revised pre-procedural coagulation guidelines for percutaneous liver biopsy to determine whether their implementation is associated with increased hemorrhagic complications on a departmental scale. Secondary endpoints were to determine the effect of this change on pre-procedural blood product (FFP and platelet) utilization, to evaluate the impact of administered blood products on hemorrhagic complications, and to determine whether bleeding complications were related to INR and platelet levels...
September 19, 2017: Abdominal Radiology
https://www.readbyqxmd.com/read/28929159/electric-field-controllable-magnetic-coupling-of-localized-spins-mediated-by-itinerant-electrons-a-toy-model
#20
Andrew Palii, Sergey Aldoshin, Boris Tsukerblat, Juan Modesto Clemente-Juan, Alejandro Gaita-Ariño, Eugenio Coronado
In this paper, we propose a toy model to describe the magnetic coupling between the localized spins mediated by the itinerant electron in partially delocalized mixed-valence (MV) systems. This minimal model takes into account the key interactions that are common for all such systems, namely, electron transfer in the valence-delocalized moiety and magnetic exchange between the localized spins and the delocalized electrons. The proposed descriptive model is exactly solvable which allows us to qualitatively and quantitatively discuss the main features of the whole class of partially delocalized MV systems...
September 20, 2017: Physical Chemistry Chemical Physics: PCCP
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