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https://www.readbyqxmd.com/read/28723980/preliminary-results-of-topical-hepatic-hypothermia-in-a-model-of-liver-ischemia-reperfusion-injury-in-rats
#1
Emilio Elias Abdo, Estela Regina Ramos Figueira, Joel Avancini Rocha-Filho, Eleazar Chaib, Luiz Augusto Carneiro D'Albuquerque, Telesforo Bacchella
BACKGROUND: Ischemia/reperfusion causes organ damage but it is mandatory in hepatic transplantation, trauma and other complex liver surgeries, when Pringle maneuver is applied to minimize bleeding during these procedures. It is well known that liver ischemia/reperfusion leads to microcirculatory disturbance and cellular injury. In this setting hypothermia is known to reduce oxygen demand, lowering intracellular metabolism. OBJECTIVE: To evaluate the effects of hypothermia in liver ischemia/reperfusion injury, using a new model of topic isolated liver hypothermia...
July 6, 2017: Arquivos de Gastroenterologia
https://www.readbyqxmd.com/read/28723936/social-sensing-of-urban-land-use-based-on-analysis-of-twitter-users-mobility-patterns
#2
Aiman Soliman, Kiumars Soltani, Junjun Yin, Anand Padmanabhan, Shaowen Wang
A number of recent studies showed that digital footprints around built environments, such as geo-located tweets, are promising data sources for characterizing urban land use. However, challenges for achieving this purpose exist due to the volume and unstructured nature of geo-located social media. Previous studies focused on analyzing Twitter data collectively resulting in coarse resolution maps of urban land use. We argue that the complex spatial structure of a large collection of tweets, when viewed through the lens of individual-level human mobility patterns, can be simplified to a series of key locations for each user, which could be used to characterize urban land use at a higher spatial resolution...
2017: PloS One
https://www.readbyqxmd.com/read/28723161/phosphines-as-efficient-dioxygen-scavengers-in-nitrous-oxide-sensors
#3
Steffen Gralert Sveegaard, Michael Nielsen, Mikkel Holmen Andersen, Kurt Vesterager Gothelf
A current challenge for development of amperometric sensors for the greenhouse gas nitrous oxide (N2O) is their sensitivity toward dioxygen and trace water. The need for aqueous dioxygen scavengers in front of the sensor implies a background signal from penetrating water vapor. In this paper, we introduce substituted phosphines as dioxygen scavengers and demonstrate the application in a dioxygen-insensitive N2O sensor. Suitably substituted phosphines have been synthesized to achieve good solubility properties in the electrochemically inert solvent propylene carbonate...
May 26, 2017: ACS Sensors
https://www.readbyqxmd.com/read/28722409/conformational-landscape-of-tri-n-butyl-phosphate-matrix-isolation-infrared-spectroscopy-and-systematic-computational-analysis
#4
Nagarajan Ramanathan, Kalyanasundaram Sundararajan, Kodumudi S Viswanathan
The conformations of tri-n-butyl phosphate (TBP) were studied using matrix isolation infrared spectroscopy and DFT calculations. TBP was trapped in a N2 matrix using both effusive and supersonic sources and its infrared spectra were recorded. The computational exploration of TBP is a very demanding problem to confront, due to the presence of a large multitude of conformations in TBP. To simplify the problem, computations were done on model compounds, dimethyl butyl phosphate (DMBP) and dibutyl methyl phosphate (DBMP), to systematically arrive at the conformations of TBP that are expected to contribute to its chemistry at room temperature...
July 19, 2017: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/28722380/-algorithm-to-facilitate-the-management-of-onychomycosis
#5
Guillaume-Alexandre Roux, Florence Baudraz-Rosselet
An algorithm is proposed to facilitate the management of onychomycosis and ensure a good therapeutical approach. Its aim is to simplify the diagnosis process by integrating a pertinent anamnesis and physical examination with the classic tool of mycology (direct examination, culture, eventually examination by PCR), in order to give the adequate targeted treatment.
March 29, 2017: Revue Médicale Suisse
https://www.readbyqxmd.com/read/28721624/on-the-successful-use-of-a-simplified-model-to-simulate-the-succession-of-toxic-cyanobacteria-in-a-hypereutrophic-reservoir-with-a-highly-fluctuating-water-level
#6
Ali Fadel, Bruno J Lemaire, Brigitte Vinçon-Leite, Ali Atoui, Kamal Slim, Bruno Tassin
Many freshwater bodies worldwide that suffer from harmful algal blooms would benefit for their management from a simple ecological model that requires few field data, e.g. for early warning systems. Beyond a certain degree, adding processes to ecological models can reduce model predictive capabilities. In this work, we assess whether a simple ecological model without nutrients is able to describe the succession of cyanobacterial blooms of different species in a hypereutrophic reservoir and help understand the factors that determine these blooms...
July 18, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28721495/diversity-and-survival-of-artificial-lifeforms-under-sedimentation-and-random-motion
#7
Nicolas Glade, Olivier Bastien, Pascal Ballet
Cellular automata are often used to explore the numerous possible scenarios of what could have occurred at the origins of life and before, during the prebiotic ages, when very simple molecules started to assemble and organise into larger catalytic or informative structures, or to simulate ecosystems. Artificial self-maintained spatial structures emerge in cellular automata and are often used to represent molecules or living organisms. They converge generally towards homogeneous stationary soups of still-life creatures...
July 18, 2017: Theory in Biosciences, Theorie in Den Biowissenschaften
https://www.readbyqxmd.com/read/28721458/a-functional-compartmental-model-of-the-synechocystis-pcc-6803-phycobilisome
#8
Ivo H M van Stokkum, Michal Gwizdala, Lijin Tian, Joris J Snellenburg, Rienk van Grondelle, Herbert van Amerongen, Rudi Berera
In the light-harvesting antenna of the Synechocystis PCC 6803 phycobilisome (PB), the core consists of three cylinders, each composed of four disks, whereas each of the six rods consists of up to three hexamers (Arteni et al., Biochim Biophys Acta 1787(4):272-279, 2009). The rods and core contain phycocyanin and allophycocyanin pigments, respectively. Together these pigments absorb light between 400 and 650 nm. Time-resolved difference absorption spectra from wild-type PB and rod mutants have been measured in different quenching and annihilation conditions...
July 18, 2017: Photosynthesis Research
https://www.readbyqxmd.com/read/28721178/global-reproductive-health-why-do-we-persist-in-neglecting-the-undeniable-problem-of-childlessness-in-resource-poor-countries
#9
EDITORIAL
W Ombelet, J Goossens
The consequences of involuntary childlessness in developing countries create more wide-ranging societal problems compared to Western societies, particularly for women. Negative psychosocial and economical consequences for childless couples are often severe and underestimated by the local and international society. Infertility treatment is often limited to certain procedures and certain costumers. Most common arguments against supporting infertility care in resource-poor countries are the "overpopulation" and the "limited resources" argument, but they totally neglect the reproductive rights and systematic exclusion of millions of women from the right to reproduce...
March 2017: Facts, Views & Vision in ObGyn
https://www.readbyqxmd.com/read/28720489/simplified-membrane-feeding-of-bloodsucking-triatomines-hemiptera-reduviidae
#10
Glennyha F Duarte, Dayane B Macedo, Christian Luz
Laboratory-reared hematophagous triatomines that are the main vectors of Chagas disease are generally fed on small vertebrates or on blood-filled membrane devices. Such devices allow a large-scale rearing of these vectors without sacrificing host animals but are almost always expensive, fragile, not easily purchased, and usually difficult to use because they need to be sterilized before and carefully cleaned after each feeding. We present here a simple device to feed triatomines that is composed of a circular series of alternating short pieces of stainless steel and silicon tubing connected to a pump that circulates water heated at 50° C in a water bath...
July 15, 2017: Acta Tropica
https://www.readbyqxmd.com/read/28720221/evaluation-of-nanoflow-liquid-chromatography-high-resolution-mass-spectrometry-for-pesticide-residue-analysis-in-food
#11
David Moreno-González, Patricia Pérez-Ortega, Bienvenida Gilbert-López, Antonio Molina-Díaz, Juan F García-Reyes, Amadeo R Fernández-Alba
This article reports on the evaluation of nanoflow liquid chromatography-mass spectrometry (LC-MS) for pesticide residue analysis in food. The approach is based on the use of reversed-phase C18nano columns with an integrated emitter, so that separation, ionization and detection are performed minimizing dead volumes. The use of nanoflow not only increases ionization efficiency and minimizes ionization suppression but also boost sensitivity compared to analytical-scale LC-MS methods. The nanoflow LC system was combined with full-scan high resolution mass spectrometry using a Q-Exactive Orbitrap instrument...
July 8, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/28720107/reversible-bacterial-immobilization-based-on-the-salt-dependent-adhesion-of-the-bacterionanofiber-protein-ataa
#12
Shogo Yoshimoto, Yuki Ohara, Hajime Nakatani, Katsutoshi Hori
BACKGROUND: Immobilization of microbial cells is an important strategy for the efficient use of whole-cell catalysts because it simplifies product separation, enables the cell concentration to be increased, stabilizes enzymatic activity, and permits repeated or continuous biocatalyst use. However, conventional immobilization methods have practical limitations, such as limited mass transfer in the inner part of a gel, gel fragility, cell leakage from the support matrix, and adverse effects on cell viability and catalytic activity...
July 18, 2017: Microbial Cell Factories
https://www.readbyqxmd.com/read/28719987/corrective-osteotomy-of-malunited-diaphyseal-fractures-of-the-forearm-simplified-using-3-dimensional-ct-data-proposal-of-our-simple-strategy-through-case-presentation
#13
Yoshitaka Hamada, Hiroyuki Gotani, Kousuke Sasaki, Yoshitaka Tanaka, Hiroshi Egawa, Thepparat Kanchanathepsak
BACKGROUND: Reconstruction of malunited diaphyseal fractures of the forearm is one of the most difficult treatments due to its complicated structure. Widespread usage of Digital Imaging and Communications in Medicine (DICOM) data of 3-dimensional (3D) computed tomography (CT) and 3D printing can make estimating the true plane of the deformity easy. METHODS: A 21-year-old man with limited supination due to left forearm nonunion deformity initially treated by locking plate fixation was referred to our hospital...
March 1, 2017: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/28719660/factors-associated-with-life-sustaining-treatment-restriction-in-a-general-intensive-care-unit
#14
Stein Arve Skjaker, Henrik Hoel, Vegard Dahl, Knut Stavem
PURPOSE: Few previous studies have investigated associations between clinical variables available after 24 hours in the intensive care unit (ICU), including the Charlson Comorbidity Index (CCI), and decisions to restrict life-sustaining treatment. The aim of this study was to identify factors associated with the life-sustaining treatment restriction and to explore if CCI contributes to explaining decisions to restrict life-sustaining treatment in the ICU at a university hospital in Norway from 2007 to 2009...
2017: PloS One
https://www.readbyqxmd.com/read/28719631/the-distribution-and-host-range-of-the-banana-fusarium-wilt-fungus-fusarium-oxysporum-f-sp-cubense-in-asia
#15
Diane Mostert, Agustin B Molina, Jeff Daniells, Gerda Fourie, Catur Hermanto, Chih-Ping Chao, Emily Fabregar, Vida G Sinohin, Nik Masdek, Raman Thangavelu, Chunyu Li, Ganyun Yi, Lizel Mostert, Altus Viljoen
Fusarium oxysporum formae specialis cubense (Foc) is a soil-borne fungus that causes Fusarium wilt, which is considered to be the most destructive disease of bananas. The fungus is believed to have evolved with its host in the Indo-Malayan region, and from there it was spread to other banana-growing areas with infected planting material. The diversity and distribution of Foc in Asia was investigated. A total of 594 F. oxysporum isolates collected in ten Asian countries were identified by vegetative compatibility groups (VCGs) analysis...
2017: PloS One
https://www.readbyqxmd.com/read/28718915/temperature-responses-of-photosynthetic-capacity-parameters-were-not-affected-by-foliar-nitrogen-content-in-mature-pinus-sylvestris
#16
Lasse Tarvainen, Martina Lutz, Mats Räntfors, Torgny Näsholm, Göran Wallin
A key weakness in current Earth System Models is the representation of thermal acclimation of photosynthesis in response to changes in growth temperatures. Previous studies in boreal and temperate ecosystems have shown leaf-scale photosynthetic capacity parameters, the maximum rates of carboxylation (Vcmax ) and electron transport (Jmax ), to be positively correlated with foliar nitrogen (N) content at a given reference temperature. It is also known that Vcmax and Jmax exhibit temperature optima that are affected by various environmental factors and, further, that N partitioning among the foliar photosynthetic pools is affected by N availability...
July 18, 2017: Physiologia Plantarum
https://www.readbyqxmd.com/read/28718634/porous-uranyl-borophosphates-with-unique-three-dimensional-open-framework-structures
#17
Yucheng Hao, Gabriel L Murphy, Dirk Bosbach, Giuseppe Modolo, Thomas E Albrecht-Schmitt, Evgeny V Alekseev
Two novel alkali-metal uranyl borophosphates have been prepared and characterized for the first time, namely, K5(UO2)2[B2P3O12(OH)]2(OH)(H2O)2 and K2(UO2)12[B(H2PO4)4](PO4)8(OH)(H2O)6 denoted as KUPB1 and KUPB2, respectively. KUPB1 was obtained hydrothermally at 220 °C and crystallizes in a monoclinic structure in the chiral space group P21. The unit cell parameters of KUPB1 are a = 6.7623(2) Å, b = 19.5584(7) Å, c = 11.0110(4) Å, α = γ = 90°, β = 95.579(3)°, and V = 1449.42(8) Å(3). It features a unique three-dimensional (3D) open-framework structure, composed of two corner-sharing linked one-dimensional (1D) anionic borophosphates (BP), [B2P3O13](5-), along the a axis and uranyl phosphate (UP), [(UO2)(PO4)3](7-), chains along the c axis, further bridged by PO4 tetrahedra...
July 18, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28717742/simplified-graded-baseline-symptom-assessment-in-patients-with-lung-cancer-undergoing-first-line-chemotherapy-correlations-and-prognostic-role-in-a-resource-constrained-setting
#18
Potsangbam Sarat Singh, Ashutosh Nath Aggarwal, Digambar Behera, Rakesh Kapoor, Navneet Singh
PURPOSE: There are limited data from developing countries on graded baseline symptom (BS) assessment in lung cancer. This prospective study aimed to assess the prognostic role of BS and correlation of BS with comorbidity, demographic, and investigation profiles in a cohort of 238 patients with lung cancer undergoing first-line chemotherapy over a 15-month period. METHODS: The Medical Research Council (MRC) scale was used to assess dyspnea, whereas the visual analog scale (VAS; score of 1 to 10) was used to assess anorexia, fatigue, chest pain, and cough...
February 2017: Journal of Global Oncology
https://www.readbyqxmd.com/read/28717301/simplified-technique-to-change-the-endotracheal-tube-from-nasal-to-oral-cavity
#19
Vivekanand S Kattimani, Meka Sridhar, Taj Nizam Shakeel Shaik
We introduce modified nasal to oral tube switch technique for modified alar cinching to prevent alar flare after orthognathic and nasal corrective surgeries. The technique is beneficial to prevent alar flare. Modified alar base cinching is effective in patients with modified tube switch technique. It increased positive results. The technique of tube switch is effective in prevention of alar flare. We suggest multi center randomized studies to know the technical difficulties of tube switch for cinching.
September 2017: Journal of Maxillofacial and Oral Surgery
https://www.readbyqxmd.com/read/28717066/a-heart-shaped-sleeve-simplifies-intramedullary-tibial-nail-insertion-when-using-the-suprapatellar-approach
#20
Kosuke Tajima, Chikako Shimizu, Soichiro Ohno, Yusho Nishida, Kazuhiko Udagawa, Junichi Sasaki
The suprapatellar approach for intramedullary tibial nailing has become widely accepted over the past decade. A round sleeve is passed beneath the patella to protect the surface of the patellofemoral joint (PFJ). However, the round sleeve cannot be easily stabilized in the PFJ because it does not conform to the shape of the patellar apex. Consequently, we produced a heart-shaped sleeve to simplify the insertion of the entry sleeve during the suprapatellar approach. Using the new sleeve, the following procedure is used: (1) make a longitudinal 4 cm skin incision proximal to the patella to reach the PFJ, (2) insert the guide pin manually to the ventral edge of the tibial plateau, (3) insert the cannulated trocar along the guide pin, (4) insert the heart-shaped sleeve along the cannulated trocar, (5) remove the cannulated trocar, (6) ream the entry point through the heart-shaped sleeve...
July 15, 2017: Keio Journal of Medicine
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