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https://www.readbyqxmd.com/read/28645932/a-functional-nav1-7-navab-chimera-with-a-reconstituted-high-affinity-protx-ii-binding-site
#1
Ramkumar Rajamani, Sophie Wu, Iyoncy Rodrigo, Mian Gao, Simon Low, Lisa Megson, David Wensel, Rick Pieschl, Debra Post-Munson, John Watson, David R Langley, Michael Ahlijanian, Linda Bristow, James Herrington
NaV1.7 is genetically implicated in human pain perception. Rare gain of function mutations in NaV1.7 lead to spontaneous pain in humans whereas loss of function mutations result in congenital insensitivity to pain (CIP). Hence, agents that specifically modulate the function of NaV1.7 have the potential to yield novel therapeutics to treat pain. The complexity of the channel and the challenges to generate recombinant cell lines with high NaV1.7 expression have led to a templated target strategy approach employing chimeras with the bacterial channel, NavAb...
June 23, 2017: Molecular Pharmacology
https://www.readbyqxmd.com/read/28644688/intraosseous-administration-of-antidotes-a-systematic-review
#2
Audrée Elliott, Pierre-André Dubé, Amélie Cossette-Côté, Laura Patakfalvi, Eric Villeneuve, Martin Morris, Sophie Gosselin
CONTEXT: Intraosseous (IO) access is an established route of administration in resuscitation situations. Patients with serious poisoning presenting to the emergency department may require urgent antidote therapy. However, intravenous (IV) access is not always readily available. OBJECTIVE: This study reviews the current evidence for IO administration of antidotes that could be used in poisoning. The primary outcome was mortality as a surrogate of efficacy. Secondary outcomes included hemodynamic variables, electrocardiographic variables, neurological status, pharmacokinetics outcomes, and adverse effects as defined by each article...
June 23, 2017: Clinical Toxicology
https://www.readbyqxmd.com/read/28644607/electrochemical-exfoliation-of-graphite-in-aqueous-sodium-halide-electrolytes-towards-low-oxygen-content-graphene-for-energy-and-environmental-applications
#3
Jose Maria Munuera, Juan Ignacio Paredes, Marina Enterria, Ana Pagán, Silvia Villar-Rodil, Manuel Fernando R Pereira, J I Martins, José L Figueiredo, Jose Luis Cenis, Amelia Martinez-Alonso, Juan Manuel D Tascon
Graphene and graphene-based materials have shown great promise in many technological applications, but their large-scale production and processing by simple and cost-effective means still constitute significant issues in the path of their widespread implementation. Here, we investigate a straightforward method for the preparation of a ready-to-use and low oxygen content graphene material that is based on electrochemical (anodic) delamination of graphite in aqueous medium with sodium halides as the electrolyte...
June 23, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28644013/a-simple-approach-to-prepare-carboxycellulose-nanofibers-from-untreated-biomass
#4
Priyanka R Sharma, Ritika Joshi, Benjamin S Hsiao
A simple approach was developed to prepare carboxycellulose nanofibers directly from untreated biomass using nitric acid or nitric acid-sodium nitrite mixtures. Experiments indicated that this approach greatly reduced the need for multi-chemicals, and offered significant benefits in lowering the consumption of water and electric energy, when compared with conventional multiple-step processes at bench scale (e.g. TEMPO oxidation). Additionally, the effluent produced by this approach could be efficaciously neutralized using base to produce nitrogen-rich salts as fertilizers...
June 23, 2017: Biomacromolecules
https://www.readbyqxmd.com/read/28642866/evaluation-of-serum-for-pathophysiological-effects-of-prolonged-low-salinity-water-exposure-in-displaced-bottlenose-dolphins-tursiops-truncatus
#5
Ruth Y Ewing, Blair Mase-Guthrie, Wayne McFee, Forrest Townsend, Charles A Manire, Michael Walsh, Rose Borkowski, Gregory D Bossart, Adam M Schaefer
We conducted a retrospective study of serum biochemistry and hematologic findings from displaced, out-of-habitat bottlenose dolphins (Tursiops truncatus) exposed to various low salinity environments in waters along the southern United States including southeastern Atlantic and northern Gulf of Mexico. Serum sodium, chloride, and calculated osmolality were significantly lower and below reference ranges in displaced animals compared to free-ranging case control animals. This suggests clinical hyponatremia, hypochloremia, and hypo-osmolality due to an uptake of low saline water from the environment...
2017: Frontiers in Veterinary Science
https://www.readbyqxmd.com/read/28641944/effect-of-antimony-oxide-on-the-shielding-properties-of-some-sodium-boro-silicate-glasses
#6
A M Zoulfakar, A M Abdel-Ghany, T Z Abou-Elnasr, A G Mostafa, S M Salem, H H El-Bahnaswy
Some sodium-silicate-boro-antimonate glasses having the molecular composition [(20) Na2O - (20) SiO2 - (60-x) B2O3 - (x) Sb2O3 (where x takes the values 0, 5 … or 20)] have been prepared by the melt quenching method. The melting and annealing temperatures were 1500 and 650K respectively. The amorphous nature of the prepared samples was confirmed by using X-ray diffraction analysis. Both the experimental and empirical density and molar volume values showed gradual increase with increasing Sb2O3 content. The empirical densities showed higher values than those obtained experimentally, while the empirical molar volume values appeared lower than those obtained experimentally, which confirm the amorphous nature and randomness character of the studied samples...
June 19, 2017: Applied Radiation and Isotopes
https://www.readbyqxmd.com/read/28640316/electrospun-graphene-wrapped-na6-24fe4-88-p2o7-4-nanofibers-as-a-high-performance-cathode-for-sodium-ion-batteries
#7
Yubin Niu, Maowen Xu, Chunlong Dai, Bolei Shen, Chang Ming Li
Na6.24Fe4.88(P2O7)4 is one of the intensively investigated polyanionic compounds and has shown high rate discharge capacity, but its relatively low electronic conductivity hampers the high performance of the batteries. Herein for the first time we report new graphene wrapped Na6.24Fe4.88(P2O7)4 composite nanofibers (NFPO@C@rGO) made from electrospinning for cathodes of SIBs to achieve an even higher performance with a highly stable discharge capacity of ∼99 mA h g(-1) at a current density of 40 mA g(-1) after 320 cycles, which is 1...
June 22, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28639347/high-energy-power-and-low-temperature-cathode-for-sodium-ion-batteries-in-situ-xrd-study-and-superior-full-cell-performance
#8
Jin-Zhi Guo, Peng-Fei Wang, Xing-Long Wu, Xiao-Hua Zhang, Qingyu Yan, Hong Chen, Jing-Ping Zhang, Yu-Guo Guo
Sodium-ion batteries (SIBs) are still confronted with several major challenges, including low energy and power densities, short-term cycle life, and poor low-temperature performance, which severely hinder their practical applications. Here, a high-voltage cathode composed of Na3 V2 (PO4 )2 O2 F nano-tetraprisms (NVPF-NTP) is proposed to enhance the energy density of SIBs. The prepared NVPF-NTP exhibits two high working plateaux at about 4.01 and 3.60 V versus the Na(+) /Na with a specific capacity of 127.8 mA h g(-1) ...
June 22, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28638287/use-of-sodium-hyaluronate-carboxymethylcellulose-bioresorbable-membrane-in-loop-ileostomy-construction-facilitates-stoma-closure
#9
Danielle M Bertoni, Kerry L Hammond, David E Beck, Terry C Hicks, Charles B Whitlow, H David Vargas, David A Margolin
BACKGROUND: Loop ileostomy is a common adjunct to surgical procedures for low rectal cancers and inflammatory bowel disease. Ileostomy closure through a limited incision can be technically challenging. We hypothesized that placing a sodium hyaluronate/carboxymethylcellulose (SH/CMC) bioresorbable membrane at loop ileostomy creation would decrease stoma closure time without increasing morbidity. METHODS: In a retrospective review at a single institution with 6 board-certified colorectal surgeons, patients with loop ileostomy creation and closure between September 1999 and December 2011 were grouped based on SH/CMC placement at ileostomy creation...
2017: Ochsner Journal
https://www.readbyqxmd.com/read/28638174/near-real-time-measurement-of-carbonaceous-aerosol-using-microplasma-spectroscopy-application-to-measurement-of-carbon-nanomaterials
#10
Lina Zheng, Pramod Kulkarni, M Eileen Birch, Gregory Deye, Dionysios D Dionysiou
A sensitive, field-portable microplasma spectroscopy method has been developed for real-time measurement of carbon nanomaterials. The method involves microconcentration of aerosol on a microelectrode tip for subsequent analysis for atomic carbon using laser-induced breakdown spectroscopy (LIBS) or spark emission spectroscopy (SES). The spark-induced microplasma was characterized by measuring the excitation temperature (15,000 - 35,000 K), electron density (1.0 × 10(17) - 2.2 × 10(17) cm(-3)), and spectral responses as functions of time and interelectrode distance...
August 18, 2016: Aerosol Science and Technology: the Journal of the American Association for Aerosol Research
https://www.readbyqxmd.com/read/28637899/dietary-salt-exacerbates-experimental-colitis
#11
Alan L Tubbs, Bo Liu, Troy D Rogers, R Balfour Sartor, Edward A Miao
The Western diet is characterized by high protein, sugar, fat, and low fiber intake, and is widely believed to contribute to the incidence and pathogenesis of inflammatory bowel disease (IBD). However, high sodium chloride salt content, a defining feature of processed foods, has not been considered as a possible environmental factor that might drive IBD. We set out to bridge this gap. We examined murine models of colitis on either a high salt diet (HSD) or a low salt diet. We demonstrate that an HSD exacerbates inflammatory pathology in the IL-10-deficient murine model of colitis relative to mice fed a low salt diet...
June 21, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28637595/a-one-year-mortality-clinical-prediction-rule-for-patients-with-heart-failure
#12
Antonio Escobar, Lidia García-Pérez, Gemma Navarro, Amaia Bilbao, Raul Quiros
AIMS: To create and validate a clinical prediction rule which is easy to manage, reproducible and that allows classifying patients admitted for heart failure according to their one-year mortality risk. METHODS: A prospective cohort study carried out with 2565 consecutive patients admitted with heart failure in 13 hospitals in Spain. The derivation cohort was made up of 1283 patients and 1282 formed the validation cohort. In the derivation cohort, we carried out a multivariate logistic model to predict one-year mortality...
June 18, 2017: European Journal of Internal Medicine
https://www.readbyqxmd.com/read/28637456/the-modified-yi-qi-decoction-protects-cardiac-ischemia-reperfusion-induced-injury-in-rats
#13
Xiao Yu, Xiao-Dong Zhao, Rong-Qi Bao, Jia-Yu Yu, Guo-Xing Zhang, Jing-Wei Chen
BACKGROUND: To investigate the effects and involved mechanisms of the modified Yi Qi decoction (MYQ) in cardiac ischemia-reperfusion (IR) induced injury. METHODS: Male Sprague-Dawley rats were subjected to a 30-min coronary arterial occlusion followed by reperfusion, low or high dose decoction of MYQ was administrated orally for 1 week or 1 month. RESULTS: Both in 1 week and 1 month IR rat groups, cardiac function indexes were significantly impaired compared with sham group rats, accompanied with higher ratio of infarct size to risk size, decreased expressions of sodium calcium exchanger (NCX1) and sarcoplasmic reticulum Ca(2+)-ATPase (Serca2a), and different expressions of autophagic proteins, Beclin-1 and LC3...
June 21, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28634862/effect-of-gapt-extract-on-expression-of-tau-protein-and-its-phosphorylation-related-enzymes-in-hippocampal-neurons-of-appv717i-transgenic-mice
#14
Jing-Nian Ni, Jing Shi, Xue-Kai Zhang, Yi-Chang Yang, Xiao-Meng Liu, Ming-Qing Wei, Ting Li, Peng-Wen Wang, Jin-Zhou Tian, Yong-Yan Wang
OBJECTIVE: To investigate the effect of GAPT, an extract mixture from Radix Ginseng, Rhizoma Acor tatarinowii, Radix Polygalae and Radix Curcuma (containing ingredient of turmeric), etc. on expression of tau protein and its phosphorylation related enzyme in hippocampal neurons of APPV717I transgenic mice. METHODS: Sixty three-month-old APPV717I transgenic mice were randomly divided into model group, donepezil group [0.92 mg/(kg d)], the low, medium and high dosage of GAPT groups [0...
June 20, 2017: Chinese Journal of Integrative Medicine
https://www.readbyqxmd.com/read/28633814/na-emission-and-bubble-instability-in-single-bubble-sonoluminescence
#15
Pak-Kon Choi, Keisuke Takumori, Hyang-Bok Lee
Na emission in single-bubble sonoluminescence (SBSL) was observed from 0.1mM sodium dodecyl sulfate (SDS) solution containing a dissolved noble gas at a low acoustic pressure, at which a continuous spectral component was negligible. High-speed shadowgraph movies were captured at a frame rate of 30,000fps, which indicated that bubble dancing is responsible for the Na emission. The measured bubble path length was well correlated with the Na intensity. The disintegration of a daughter bubble followed by immediate coalescence was frequently observed, which may have been the cause of the bubble dancing...
September 2017: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/28633328/identification-and-characterization-of-a-solute-carrier-cia8-involved-in-inorganic-carbon-acclimation-in-chlamydomonas-reinhardtii
#16
Marylou C Machingura, Joanna Bajsa-Hirschel, Susan M Laborde, Joshua B Schwartzenburg, Bratati Mukherjee, Ananya Mukherjee, Steve V Pollock, Britta Förster, G Dean Price, James V Moroney
The supply of inorganic carbon (Ci) at the site of fixation by Rubisco is a key parameter for efficient CO2 fixation in aquatic organisms including the green alga, Chlamydomonas reinhardtii. Chlamydomonas reinhardtii cells, when grown on limiting CO2, have a CO2-concentrating mechanism (CCM) that functions to concentrate CO2 at the site of Rubisco. Proteins thought to be involved in inorganic carbon uptake have been identified and localized to the plasma membrane or chloroplast envelope. However, current CCM models suggest that additional molecular components are involved in Ci uptake...
June 13, 2017: Journal of Experimental Botany
https://www.readbyqxmd.com/read/28632750/renal-sodium-handling-and-blood-pressure-changes-in-gestational-protein-restricted-offspring-role-of-renal-nerves-and-ganglia-neurokinin-expression
#17
Augusto H Custódio, Marcelo C de Lima, Bárbara Vaccari, Patrícia A Boer, José A R Gontijo
BACKGROUND: Considering long-term changes in renal sodium handling and blood pressure in maternal protein-restricted (LP) offspring, we assumed that the development of LP hypertension results from abnormal dorsal root ganglia (DRG) neurokinin expression associated with impaired responsiveness of renal sensory receptors, promoting a reduced urinary excretion of sodium. The present study investigates whether increased blood pressure in protein-restricted offspring would be associated with changes in the DRG cells and in renal pelvic wall expression of NK1R, SP and CGRP when compared to NP offspring...
2017: PloS One
https://www.readbyqxmd.com/read/28630432/down-regulation-of-kca2-3-channels-causes-erectile-dysfunction-in-mice
#18
Simon Comerma-Steffensen, Attila Kun, Elise R Hedegaard, Susie Mogensen, Christian Aalkjaer, Ralf Köhler, Birgitte Mønster Christensen, Ulf Simonsen
Modulation of endothelial calcium-activated K(+) channels has been proposed as an approach to restore arterial endothelial cell function in disease. We hypothesized that small-conductance calcium-activated K(+) channels (KCa2.3 or SK3) contributes to erectile function. The research was performed in transgenic mice with overexpression (KCa2.3 (T/T(-Dox))) or down-regulation (KCa2.3 (T/T(+Dox))) of the KCa2.3 channels and wild-type C57BL/6-mice (WT). QPCR revealed that KCa2.3 and KCa1.1 channels were the most abundant in mouse corpus cavernosum...
June 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28629174/using-coexpression-protein-interaction-network-analysis-to-identify-mechanisms-of-danshensu-affecting-patients-with-coronary-heart-disease
#19
Mengqi Huo, Zhixin Wang, Dongxue Wu, Yanling Zhang, Yanjiang Qiao
Salvia miltiorrhiza, known as Danshen, has attracted worldwide interest for its substantial effects on coronary heart disease (CHD). Danshensu (DSS) is one of the main active ingredients of Danshen on CHD. Although it has been proven to have a good clinical effect on CHD, the action mechanisms remain elusive. In the current study, a coexpression network-based approach was used to illustrate the beneficial properties of DSS in the context of CHD. By integrating the gene expression profile data and protein-protein interactions (PPIs) data, two coexpression protein interaction networks (CePIN) in a CHD state (CHD CePIN) and a non-CHD state (non-CHD CePIN) were generated...
June 19, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28629095/solvothermal-synthesis-of-hydroxyapatite-nanorods-with-assistance-of-green-polymer
#20
Hui Yang, Tongxiang Liang, Xiaopeng Qi, Honghui Jiang, Yiqun Deng, Ping Wang, Huichang Gao
Development of low cost, environmental friendly crystal growth modifying reagents that are effective to HAp's microstructure regulation is highly crucial. Herein, sodium lignin sulfonate (SS), a byproduct of the pulp process, was used for preparing HAp nanorods. Results showed that both stirring time of reaction solution and the concentration of SS affected crystals' structure and aspect ratio. The growth mechanism was discussed on the basis of the results. And we hope this new synthetic strategy will offer an attractive route for the design of functional HAp nano-/micro- materials with fine structure...
October 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
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