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https://www.readbyqxmd.com/read/28548026/low-reliability-of-anti-kir4-183-120-peptide-auto-antibodies-in-multiple-sclerosis-patients
#1
Mariapaola Marino, Giovanni Frisullo, Gabriele Di Sante, Daniela Maria Samengo, Carlo Provenzano, Massimiliano Mirabella, Giovambattista Pani, Francesco Ria, Emanuela Bartoccioni
BACKGROUND: Multiple sclerosis (MS) is an autoimmune disease for which auto-antibodies fully validated as diagnostic and prognostic biomarkers are widely desired. Recently, an immunoreactivity against the inward rectifying potassium channel 4.1 (KIR4.1) has been reported in a large proportion of a group of MS patients, with amino acids 83-120 being the major epitope. Moreover, a strong correlation between anti-KIR4.183-120 and anti-full-length-protein auto-antibodies titer was reported...
May 1, 2017: Multiple Sclerosis: Clinical and Laboratory Research
https://www.readbyqxmd.com/read/28546542/low-cesium-rice-mutation-in-ossos2-reduces-radiocesium-in-rice-grains
#2
Satoru Ishikawa, Shimpei Hayashi, Tadashi Abe, Masato Igura, Masato Kuramata, Hachidai Tanikawa, Manaka Iino, Takashi Saito, Yuji Ono, Tetsuya Ishikawa, Shigeto Fujimura, Akitoshi Goto, Hiroki Takagi
In Japan, radiocesium contamination in foods has become of great concern and it is a primary issue to reduce grain radiocesium concentration in rice (Oryza sativa L.). Here, we report a low-cesium rice mutant 1 (lcs1) with the radiocesium concentration in grain about half that in the wild-type cultivar. Genetic analyses revealed that a mutation in OsSOS2, which encodes a serine/threonine-protein kinase required for the salt overly sensitive (SOS) pathway in plants, is responsible for the decreased cesium (Cs) concentrations in lcs1...
May 25, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28544043/identification-of-v-type-nerve-agents-in-vapor-samples-using-a-field-portable-capillary-gas-chromatography-membrane-interfaced-electron-ionization-quadrupole-mass-spectrometry-instrument-with-tri-bed-concentrator-and-fluoridating-conversion-tube
#3
Yasuhiko Ohrui, Tomoki Nagoya, Naoko Kurimata, Manabu Sodeyama, Yasuo Seto
A field-portable gas chromatography-mass spectrometry (GC-MS) system (Hapsite ER) was evaluated for the detection of nonvolatile V-type nerve agents (VX and Russian VX (RVX)) in the vapor phase. The Hapsite ER system consists of a Tri-Bed concentrator gas sampler, a nonpolar low thermal-mass capillary gas chromatography column and a hydrophobic membrane-interfaced electron ionization quadrupole mass spectrometer evacuated by a non-evaporative getter pump. The GC-MS system was attached to a VX-G fluoridating conversion tube containing silver nitrate and potassium fluoride...
May 25, 2017: Journal of Mass Spectrometry: JMS
https://www.readbyqxmd.com/read/28539258/dietary-approaches-to-stop-hypertension-diet-weight-status-and-blood-pressure-among-children-and-adolescents-national-health-and-nutrition-examination-surveys-2003-2012
#4
Juliana F W Cohen, Megan E Lehnerd, Robert F Houser, Eric B Rimm
BACKGROUND: The Dietary Approaches to Stop Hypertension (DASH) diet is associated with lower blood pressure and reduced risk of cardiovascular disease among adults, but little is known about accordance with this dietary pattern or health benefits among children and adolescents. OBJECTIVE: The objectives were to evaluate accordance with the DASH diet, differences over time, and the association with health attributes among a nationally representative sample of US children and adolescents...
May 20, 2017: Journal of the Academy of Nutrition and Dietetics
https://www.readbyqxmd.com/read/28535530/mathematical-model-of-potassium-profiling-in-chronic-dialysis
#5
Mauro Ursino, Gabriele Donati
Potassium balance is a difficult task in hemodialysis: low potassium in the dialysate is associated with a high risk of sudden cardiac death, whereas excessive dialysate potassium may provoke insufficient removal and hyperkalemia. A better understanding of the problem can be achieved with the use of mathematical models of solute kinetics. This study is aimed at presenting an improved model of solute kinetics and fluid shifts during hemodialysis. It comprises a 2-compartment (intracellular and extracellular) description of sodium, potassium, and urea, including volume fluid shifts induced by osmotic forces...
2017: Contributions to Nephrology
https://www.readbyqxmd.com/read/28535116/is-mannitol-the-treatment-of-choice-for-patients-with-ciguatera-fish-poisoning
#6
Michael E Mullins, Robert S Hoffman
CONTEXT: Ciguatera fish poisoning arises primarily from consumption of carnivorous reef fish caught in tropical and sub-tropical waters. Ciguatoxins, a class of tasteless, heat-stable, polycyclic toxins produced by dinoflagellates, accumulate through the food chain and concentrate in various carnivorous fish, such as groupers, barracudas, wrasses, amberjack, kingfishes, and eels. Characteristics of ciguatera fish poisoning include early nausea, vomiting, and diarrhea in the first one to two days post ingestion, followed by the appearance of sensory disturbances...
May 23, 2017: Clinical Toxicology
https://www.readbyqxmd.com/read/28531850/in-situ-injection-of-potassium-hydroxide-into-briquetted-wheat-straw-and-meadow-grass-effect-on-biomethane-production
#7
Lu Feng, Veronica Moset, Wanwu Li, Chang Chen, Henrik Bjarne Møller
Alkaline pretreatment of lignocellulosic biomass has been intensively investigated but heavy water usage and environmental pollution from wastewater limits its industrial application. This study presents a pretreatment technique by in-situ injection of potassium hydroxide concentrations ranging from 0.8% to 10% (w/w) into the briquetting process of wheat straw and meadow grass. Results show that the biomethane yield and hydrolysis rate was improved significantly with a higher impact on wheat straw compared to meadow grass...
May 8, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28531788/association-of-dietary-factors-with-severity-of-coronary-artery-disease
#8
Namita Mahalle, M K Garg, S S Naik, M V Kulkarni
BACKGROUND: Cardiovascular disease has taken epidemic proportions during past decades. Cardiovascular risk factors contribute to progression of coronary lesions, worsening the patient's prognosis. This study was planned to analyze the association of dietary factors with severity of coronary artery disease (CAD) in Indian patients. METHODS: Three hundred patients with known coronary disease above the age of 25 years were included in this study. Blood samples were collected for biochemical markers...
October 2016: Clinical Nutrition ESPEN
https://www.readbyqxmd.com/read/28530170/k-modulates-genetic-competence-and-the-stress-regulon-of-streptococcus-mutans
#9
Gursonika Binepal, Iwona B Wenderska, Paula Crowley, Richard N Besingi, Dilani B Senadheera, L Jeannine Brady, Dennis G Cvitkovitch
Potassium (K+) is the most abundant cation in dental plaque fluid. Previously, we reported the link between K+ transport via Trk2 in Streptococcus mutans and its two critical virulence attributes: acid tolerance and surface adhesion. Herein, we build further on the intimate link between K+ levels and S. mutans biology. High (>25 mM) versus low (≤5 mM) K+ concentrations in the growth medium affected conformational epitopes of cell surface-localized adhesin P1. At low K+, the expression of stress response elements gcrR and codY, cell-adhesion-associated genes such as spaP and metabolism-associated genes such as bglP was induced at stationary phase (P<0...
May 22, 2017: Microbiology
https://www.readbyqxmd.com/read/28529463/nutrition-practices-and-knowledge-among-ncaa-division-iii-football-players
#10
Elizabeth Lea Abbey, Cynthia Joy Wright, Christina M Kirkpatrick
BACKGROUND: Participation in collegiate American football is physically demanding and may have long-term health implications, particularly in relation to cardiovascular and neurological health. National Collegiate Athletic Association (NCAA) Division III (DIII) football players are a relatively unstudied population, particularly in terms of their dietary habits and knowledge. The aim of the present study was to descriptively evaluate the dietary intake of DIII football players including a subset of linemen and assess the nutritional knowledge and sources of information of these athletes...
2017: Journal of the International Society of Sports Nutrition
https://www.readbyqxmd.com/read/28528529/the-influence-of-depolarization-block-on-seizure-like-activity-in-networks-of-excitatory-and-inhibitory-neurons
#11
Christopher M Kim, Duane Q Nykamp
The inhibitory restraint necessary to suppress aberrant activity can fail when inhibitory neurons cease to generate action potentials as they enter depolarization block. We investigate possible bifurcation structures that arise at the onset of seizure-like activity resulting from depolarization block in inhibitory neurons. Networks of conductance-based excitatory and inhibitory neurons are simulated to characterize different types of transitions to the seizure state, and a mean field model is developed to verify the generality of the observed phenomena of excitatory-inhibitory dynamics...
May 20, 2017: Journal of Computational Neuroscience
https://www.readbyqxmd.com/read/28527993/feasible-protein-aggregation-of-phosphorylated-poly-%C3%AE-glutamic-acid-derivative-from-bacillus-subtilis-natto
#12
Osamu Kurita, Toru Sago, Kaori Umetani, Yasushi Kokean, Chizuru Yamaoka, Nobuyuki Takahashi, Hiroyuki Iwamoto
Poly-γ-glutamic acid (PGA) was modified with phosphorylating agents such as sodium metaphosphate and potassium metaphosphate in the culture medium of Bacillus subtilis (natto). The highly phosphorylated PGA derivatives were prepared and investigated for their chemical and physicochemical properties. The PGA derivatives had approximately 7% (W/W) inorganic phosphorus and characteristic absorbance PO2(-) bands at 1082cm(-1) and 1260cm(-1) by Fourier Transform Infrared Spectroscopy. The derivative modified by sodium metaphosphate (J-5) was easily hydrated in water and had extremely low viscosity...
May 17, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28527336/title-potassium-application-regulates-nitrogen-metabolism-and-osmotic-adjustment-in-cotton-gossypium-hirsutum-l-functional-leaf-under-drought-stress
#13
Rizwan Zahoor, Wenqing Zhao, Muhammad Abid, Haoran Dong, Zhiguo Zhou
To evaluate the role of potassium (K) in maintaining nitrogen metabolism and osmotic adjustment development of cotton functional leaves to sustain growth under soil drought and rewatering conditions, the plants of two cotton cultivars Siza 3 (low-K sensitive) and Simian 3 (low-K tolerant), were grown under three different K rates (K0, K1, and K2; 0, 150, and 300kgK2Oha(-1), respectively) and exposed to drought stress with 40±5% soil relative water content (SRWC). The drought stress was applied at flowering stage by withholding water for eight days followed by rewatering to a well-watered level (75±5% SRWC)...
May 4, 2017: Journal of Plant Physiology
https://www.readbyqxmd.com/read/28521417/introduction-of-plasmids-into-gastric-cancer-cells-by-endoscopic-ultrasound
#14
Minoru Tomizawa, Fuminobu Shinozaki, Yasufumi Motoyoshi, Takao Sugiyama, Shigenori Yamamoto, Naoki Ishige
Short hairpin RNA of frizzled-2 (shRNA-Fz2) suppresses the cell proliferation of gastric cancer cells. Endoscopic ultrasound (EUS) is considered a suitable method for the introduction of therapeutic plasmids into cells, since the device enables the access and real-time monitoring of gastric cancer tissues. In the present study, plasmids were introduced into cells by sonoporation, as evidenced by the production of H2O2. The production of H2O2 was measured by absorbance of a potassium-starch solution irradiated with EUS...
May 2017: Oncology Letters
https://www.readbyqxmd.com/read/28515174/functional-assessment-of-sodium-chloride-co-transporter-ncc-mutants-in-polarized-mammalian-epithelial-cells
#15
Lena Lindtoft Rosenbaek, Federica Rizzo, Nanna MacAulay, Olivier Staub, Robert A Fenton
The thiazide-sensitive sodium chloride co-transporter, NCC, is important for maintaining serum sodium (Na+) and, indirectly, serum potassium (K+) levels. Functional studies on NCC have used cell lines with native NCC expression, transiently transfected non-polarized cell lines or Xenopus laevis oocytes. Here, we developed polarized Madin-Darby canine kidney type I (MDCKI) mammalian epithelial cell lines with tetracycline-inducible human NCC expression to study NCC activity and membrane abundance in the same system...
May 17, 2017: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/28514635/specialization-to-extremely-low-nutrient-soils-limits-the-nutritional-adaptability-of-plant-lineages
#16
G Anthony Verboom, William D Stock, Michael D Cramer
Specialization to extreme selective situations promotes the acquisition of traits whose coadaptive integration may compromise evolutionary flexibility and adaptability. We test this idea in the context of the foliar stoichiometry of plants native to the South African Cape. Whereas foliar concentrations of nitrogen, phosphorus (P), potassium (K), calcium, magnesium, and sodium showed strong phylogenetic signal, as did the foliar ratios of these nutrients to P, the same was not true of the corresponding soil values...
June 2017: American Naturalist
https://www.readbyqxmd.com/read/28514017/isopimaric-acid-a-multi-targeting-ion-channel-modulator-reducing-excitability-and-arrhythmicity-in-a-spontaneously-beating-mouse-atrial-cell-line
#17
Sajjad Salari, Malin Silverå Ejneby, Johan Brask, Fredrik Elinder
AIM: Atrial fibrillation is the most common persistent cardiac arrhythmia, and it is not well controlled by present drugs. Because some resin acids open voltage-gated potassium channels and reduce neuronal excitability, we explored the effects of the resin acid isopimaric acid (IPA) on action potentials and ion currents in cardiomyocytes. METHODS: Spontaneously beating mouse atrial HL-1 cells were investigated with the whole-cell patch-clamp technique. RESULTS: 1-25 μmol L(-1) IPA reduced the action potential frequency by up to 50%...
May 17, 2017: Acta Physiologica
https://www.readbyqxmd.com/read/28513620/efficient-hydrogen-production-on-moni4-electrocatalysts-with-fast-water-dissociation-kinetics
#18
Jian Zhang, Tao Wang, Pan Liu, Zhongquan Liao, Shaohua Liu, Xiaodong Zhuang, Mingwei Chen, Ehrenfried Zschech, Xinliang Feng
Various platinum-free electrocatalysts have been explored for hydrogen evolution reaction in acidic solutions. However, in economical water-alkali electrolysers, sluggish water dissociation kinetics (Volmer step) on platinum-free electrocatalysts results in poor hydrogen-production activities. Here we report a MoNi4 electrocatalyst supported by MoO2 cuboids on nickel foam (MoNi4/MoO2@Ni), which is constructed by controlling the outward diffusion of nickel atoms on annealing precursor NiMoO4 cuboids on nickel foam...
May 17, 2017: Nature Communications
https://www.readbyqxmd.com/read/28513067/interventions-for-cutaneous-molluscum-contagiosum
#19
REVIEW
Johannes C van der Wouden, Renske van der Sande, Emma J Kruithof, Annet Sollie, Lisette Wa van Suijlekom-Smit, Sander Koning
BACKGROUND: Molluscum contagiosum is a common skin infection that is caused by a pox virus and occurs mainly in children. The infection usually resolves within months in people without immune deficiency, but treatment may be preferred for social and cosmetic reasons or to avoid spreading the infection. A clear evidence base supporting the various treatments is lacking.This is an update of a Cochrane Review first published in 2006, and updated previously in 2009. OBJECTIVES: To assess the effects of specific treatments and management strategies, including waiting for natural resolution, for cutaneous, non-genital molluscum contagiosum in people without immune deficiency...
May 17, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28510284/tricyanomethane-and-its-ketenimine-tautomer-generated-from-different-precursors-and-analyzed-in-solution-argon-matrix-and-single-crystal
#20
Klaus Banert, Madhu Chityala, Manfred Hagedorn, Helmut Beckers, Tony Stüker, Sebastian Riedel, Tobias Rüffer, Heinrich Lang
Solutions of azidomethylidenemalononitrile were photolyzed at low temperatures to produce the corresponding 2H-azirine and tricyanomethane, which were analyzed by low-temperature NMR spectroscopy. The latter product was also observed after short thermolysis of the azide precursor in solution, whereas irradiation of the azide isolated in an argon matrix did not lead to tricyanomethane, but to unequivocal detection of the tautomeric ketenimine by IR spectroscopy for the first time. When the long-known "aquoethereal" greenish phase, generated from potassium tricyanomethanide, dilute sulfuric acid, and diethyl ether, was rapidly evaporated and sublimed, a mixture of hydronium tricyanomethanide and tricyanomethane was formed instead of previously claimed ketenimine tautomer...
May 16, 2017: Angewandte Chemie
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