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https://www.readbyqxmd.com/read/28109059/maintaining-stability-of-the-rumen-ecosystem-is-associated-with-changes-of-microbial-composition-and-epithelial-tlr-signaling
#1
Hong Shen, Zhan Chen, Zanming Shen, Zhongyan Lu
We used the goat as a model to study the effects of rumen microbial composition and epithelial TLR signaling on maintaining rumen stability during exogenous butyrate interference. Six cannulated goats received a rapid intraruminal infusion of 0.1 mol/L potassium phosphate buffer with (BT, n = 3) or without (CO, n = 3) 0.3 g/kg·BW·day sodium butyrate for 28 days. The ruminal pH and the concentration of total SCFA were not affected by the interference. 16S rRNA gene amplicon sequencing revealed a change in microbial composition after the butyrate infusion...
January 21, 2017: MicrobiologyOpen
https://www.readbyqxmd.com/read/28108730/the-relationship-between-liver-kidney-impairment-and-viral-load-after-nephropathogenic-infectious-bronchitis-virus-infection-in-embryonic-chickens
#2
Qiqi Huang, Xiaona Gao, Ping Liu, Huayuan Lin, Weilian Liu, Guohui Liu, Jin Zhang, Guangfu Deng, Caiying Zhang, Huabin Cao, Xiaoquan Guo, Guoliang Hu
To examine the relationship of impairments of the liver and kidney with viral load after nephropathogenic infectious bronchitis virus (NIBV) infection in embryonic chickens, 120 specific-pathogen-free Leghorn embryonated chicken eggs were randomly divided into two groups (infected and control), with three replicates per group and 20 eggs in each replicate. The eggs in the infected and control groups were challenged with 0.2 mL of 10(5.5) ELD50 NIBV and sterile saline solution, respectively. The embryonic chickens' plasma and liver and kidney tissues were collected at 1, 3, and 5 days post-inoculation (dpi), the liver and kidney functional parameters were quantified, and the tissue viral loads were determined with real-time PCR...
January 20, 2017: Poultry Science
https://www.readbyqxmd.com/read/28107950/label-free-potentiometric-biosensor-based-on-solid-contact-for-determination-of-total-phenols-in-honey-and-propolis
#3
Patrícia Ferrante Draghi, Julio Cesar Bastos Fernandes
We developed a label-free potentiometric biosensor using tyrosinase extracted from Musa acuminata and immobilized by covalent bond on a surface of a solid-contact transducer. The transducer was manufactured containing two layers. The first layer contained a blend of poly(vinyl) chloride carboxylated (PVC-COOH), graphite and potassium permanganate. On this layer, we deposited a second layer containing just a mixture of poly(vinyl chloride) carboxylated and graphite. On the last layer of the transducer, we immobilized the tyrosinase enzyme by reaction with N-(3-dimethylaminopropyl)-N'-ethylcarbodiimide hydrochloride...
March 1, 2017: Talanta
https://www.readbyqxmd.com/read/28107915/a-clean-photometric-method-for-the-determination-of-losartan-potassium-in-pharmaceuticals-exploiting-light-scattering-effect-and-employing-a-multicommuted-flow-analysis-approach
#4
Manoel J A Lima, Boaventura F Reis
This paper describes an environmentally friendly procedure for the determination of losartan potassium (Los-K) in pharmaceuticals. The photometric method was based on the light scattering effect due to particles suspension, which were formed by the reaction of Los-K with Cu (II) ions. The method was automated employing a multicommuted flow analysis approach, implemented using solenoid mini-pumps for fluid propelling and a homemade LED based photometer. Under the optimized experimental conditions, the procedure showed a linear relationship in the concentration range of 23...
March 1, 2017: Talanta
https://www.readbyqxmd.com/read/28107393/t-cell-subset-and-stimulation-strength-dependent-modulation-of-t-cell-activation-by-kv1-3-blockers
#5
Wai-Ping Fung-Leung, Wilson Edwards, Yi Liu, Karen Ngo, Julianty Angsana, Glenda Castro, Nancy Wu, Xuejun Liu, Ronald V Swanson, Alan D Wickenden
Kv1.3 is a voltage-gated potassium channel expressed on T cells that plays an important role in T cell activation. Previous studies have shown that blocking Kv1.3 channels in human T cells during activation results in reduced calcium entry, cytokine production, and proliferation. The aim of the present study was to further explore the effects of Kv1.3 blockers on the response of different human T cell subsets under various stimulation conditions. Our studies show that, unlike the immune suppressor cyclosporine A, the inhibitory effect of Kv1...
2017: PloS One
https://www.readbyqxmd.com/read/28107066/hematologic-plasma-biochemical-and-lipid-panel-reference-intervals-in-orange-winged-amazon-parrots-amazona-amazonica
#6
Claire Vergneau-Grosset, Tamsen Polley, Danielle Carrade Holt, William Vernau, Joanne Paul-Murphy
To establish reference intervals in orange-winged Amazon parrots ( Amazona amazonica ) for the complete blood count, plasma biochemical values, and lipid panel and to evaluate age- and sex-related variations, blood samples were obtained from 29 healthy juvenile and adult parrots. Concentrations of total protein, bile acids, phosphorus, total cholesterol, low-density-lipoprotein cholesterol (LDL-C), and high-density lipoprotein cholesterol were significantly higher in adult compared with juvenile birds, while uric acid concentration was significantly higher in juveniles...
December 2016: Journal of Avian Medicine and Surgery
https://www.readbyqxmd.com/read/28106736/development-and-sequential-analysis-of-a-new-multi-agent-anti-acne-formulation-based-on-plant-derived-antimicrobial-and-anti-inflammatory-compounds
#7
Crina Saviuc, Bianca Ciubucă, Gabriela Dincă, Coralia Bleotu, Veronica Drumea, Mariana-Carmen Chifiriuc, Marcela Popa, Gratiela Gradisteanu Pircalabioru, Luminita Marutescu, Veronica Lazăr
The antibacterial and anti-inflammatory potential of natural, plant-derived compounds has been reported in many studies. Emerging evidence indicates that plant-derived essential oils and/or their major compounds may represent a plausible alternative treatment for acne, a prevalent skin disorder in both adolescent and adult populations. Therefore, the purpose of this study was to develop and subsequently analyze the antimicrobial activity of a new multi-agent, synergic formulation based on plant-derived antimicrobial compounds (i...
January 17, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28106712/very-low-protein-diet-vlpd-reduces-metabolic-acidosis-in-subjects-with-chronic-kidney-disease-the-nutritional-light-signal-of-the-renal-acid-load
#8
Biagio Raffaele Di Iorio, Lucia Di Micco, Stefania Marzocco, Emanuele De Simone, Antonietta De Blasio, Maria Luisa Sirico, Luca Nardone, On Behalf Of Ubi Study Group
BACKGROUND: Metabolic acidosis is a common complication of chronic kidney disease; current guidelines recommend treatment with alkali if bicarbonate levels are lower than 22 mMol/L. In fact, recent studies have shown that an early administration of alkali reduces progression of CKD. The aim of the study is to evaluate the effect of fruit and vegetables to reduce the acid load in CKD. METHODS: We conducted a case-control study in 146 patients who received sodium bicarbonate...
January 17, 2017: Nutrients
https://www.readbyqxmd.com/read/28106251/affinity-capillary-electrophoresis-and-quantum-mechanical-calculations-applied-to-investigation-of-gly-6-antamanide-binding-with-sodium-and-potassium-ions
#9
Sachin Pangavhane, Stanislav Böhm, Emanuel Makrlík, Paolo Ruzza, Václav Kašička
Affinity capillary electrophoresis in a free solution (ACE) and quantum mechanical density functional theory (DFT) have been applied to the investigation of interactions of glycine-6-antamanide ([Gly(6) ]AA), a synthetic derivative of cyclic decapeptide antamanide isolated from the highly poisonous mushroom Amanita phalloides, with sodium or potassium ions in methanol. First, from the dependence of effective electrophoretic mobility of [Gly(6) ]AA on Na(+) or K(+) ions concentration in the background electrolyte (BGE) (methanolic solution of 20 mM chloroacetic acid, 10 mM Tris, pHMeOH 7...
January 20, 2017: Electrophoresis
https://www.readbyqxmd.com/read/28105829/gastight-hydrodynamic-electrochemistry-design-for-a-hermetically-sealed-rotating-disk-electrode-cell
#10
Suho Jung, Ruud Kortlever, Ryan J R Jones, Michael F Lichterman, Theodor Agapie, Charles C L McCrory, Jonas C Peters
Rotating disk electrodes (RDEs) are widely used in electrochemical characterization to analyze the mechanisms of various electrocatalytic reactions. RDE experiments often make use of or require collection and quantification of gaseous products. The combination of rotating parts and gaseous analytes makes the design of RDE cells that allow for headspace analysis challenging due to gas leaks at the interface of the cell body and the rotator. In this manuscript we describe a new, hermetically sealed electrochemical cell that allows for electrode rotation while simultaneously providing a gastight environment...
January 3, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28105745/thin-soft-skin-mounted-microfluidic-networks-with-capillary-bursting-valves-for-chrono-sampling-of-sweat
#11
Jungil Choi, Daeshik Kang, Seungyong Han, Sung Bong Kim, John A Rogers
Systems for time sequential capture of microliter volumes of sweat released from targeted regions of the skin offer the potential to enable analysis of temporal variations in electrolyte balance and biomarker concentration throughout a period of interest. Current methods that rely on absorbent pads taped to the skin do not offer the ease of use in sweat capture needed for quantitative tracking; emerging classes of electronic wearable sweat analysis systems do not directly manage sweat-induced fluid flows for sample isolation...
January 20, 2017: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/28105459/mog-antibody-positive-benign-unilateral-cerebral-cortical-encephalitis-with-epilepsy
#12
Ryo Ogawa, Ichiro Nakashima, Toshiyuki Takahashi, Kimihiko Kaneko, Tetsuya Akaishi, Yoshiki Takai, Douglas Kazutoshi Sato, Shuhei Nishiyama, Tatsuro Misu, Hiroshi Kuroda, Masashi Aoki, Kazuo Fujihara
OBJECTIVE: To describe the features of adult patients with benign, unilateral cerebral cortical encephalitis positive for the myelin oligodendrocyte glycoprotein (MOG) antibody. METHODS: In this retrospective, cross-sectional study, after we encountered an index case of MOG antibody-positive unilateral cortical encephalitis with epileptic seizure, we tested for MOG antibody using our in-house, cell-based assay in a cohort of 24 consecutive adult patients with steroid-responsive encephalitis of unknown etiology seen at Tohoku University Hospital (2008-2014)...
March 2017: Neurology® Neuroimmunology & Neuroinflammation
https://www.readbyqxmd.com/read/28105369/potassium-channels-of-t-lymphocytes-take-center-stage-in-the-fight-against-cancer
#13
EDITORIAL
Laura Conforti
A recent study by Eil at al. published in Nature in September 2016 provides evidence that alterations of the K(+) homeostasis of tumor infiltrating lymphocytes (TILs) in necrotic areas of the tumor microenvironment (TME) suppress the function of effector T cells. Furthermore, they establish that overexpression of K(+) channels in T lymphocytes counterbalances this negative effect of the TME and restores the ability of TILs to function, ultimately leading to increased survival of tumor bearing mice. Thus, K(+) channels in T lymphocytes become interesting new targets for novel immunotherapies in cancer...
2017: Journal for Immunotherapy of Cancer
https://www.readbyqxmd.com/read/28105264/potential-of-renal-outer-medullary-potassium-romk-channel-as-treatments-for-hypertension-and-heart-failure
#14
EDITORIAL
Ahmed F Abdel-Magid
No abstract text is available yet for this article.
January 12, 2017: ACS Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/28104983/hydrogen-sulfide-attenuates-gastric-mucosal-injury-induced-by-restraint-water-immersion-stress-via-activation-of-katp-channel-and-nf-%C3%AE%C2%BAb-dependent-pathway
#15
Hong-Zhao Sun, Shan Zheng, Kai Lu, Feng-Tian Hou, Jie-Xue Bi, Xue-Lian Liu, Shan-Shan Wang
AIM: To explore the effect of hydrogen sulfide (H2S) on restraint water-immersion stress (RWIS)-induced gastric lesions in rats and the influence of adenosine triphosphate (ATP)-sensitive potassium (KATP) channels and nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB) pathway on such an effect. METHODS: Male Wistar rats were randomly divided into a control group, a physiological saline (PS) group, a sodium hydrosulfide (NaHS) group, a glibenclamide (Gl) group, Gl plus NaHS group, a pyrrolidine dithiocarbamate (PDTC) group, and a PDTC plus NaHS group...
January 7, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28104335/soil-water-and-nutrient-losses-from-management-alternatives-for-degraded-pasture-in-brazilian-atlantic-rainforest-biome
#16
Paulo Roberto da Rocha Junior, Felipe Vaz Andrade, Eduardo de Sá Mendonça, Guilherme Kangussú Donagemma, Raphael Bragança Alves Fernandes, Rabin Bhattharai, Prasanta Kumar Kalita
The objective of this study was to evaluate sediment, water and nutrient losses from different pasture managements in the Atlantic Rainforest biome. A field study was carried out in Alegre Espiríto Santo, Brazil, on a Xanthic Ferralsol cultivated with braquiaria (Brachiaria brizantha). The six pasture managements studied were: control (CON), chisel (CHI), fertilizer (FER), burned (BUR), plowing and harrowing (PH), and integrated crop-livestock (iCL). Runoff and sediment samples were collected and analyzed for calcium (Ca), magnesium (Mg), potassium (K), phosphorus (P) and organic carbon contents...
January 16, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28104253/the-effect-of-fampridine-sr-on-cognitive-fatigue-in-a-randomized-double-blind-crossover-trial-in-patients-with-ms
#17
Sarah A Morrow, Heather Rosehart, Andrew M Johnson
BACKGROUND: Cognitive fatigue (CF) is a common complaint in persons with MS (PwMS). Fampridine-SR improves ambulation, fatigue and endurance, due to enhancing action potential formation by blocking potassium channels in demyelinated axons. Thus, through this same mechanism, it is hypothesized that Fampridine-SR could improve CF. OBJECTIVE: To determine if Fampridine-SR objectively improves CF in PwMS. METHODS: Sixty PwMS of any type with CF, defined as 3 or less correct responses when comparing the last third to the first third on the Paced Auditory Serial Addition Test (PASAT), were recruited from a tertiary care MS clinic in London (ON) Canada...
January 2017: Multiple Sclerosis and related Disorders
https://www.readbyqxmd.com/read/28103480/adrenergic-gate-release-for-spike-timing-dependent-synaptic-potentiation
#18
Yanling Liu, Lei Cui, Martin K Schwarz, Yan Dong, Oliver M Schlüter
Spike timing-dependent synaptic plasticity (STDP) serves as a key cellular correlate of associative learning, which is facilitated by elevated attentional and emotional states involving activation of adrenergic signaling. At cellular levels, adrenergic signaling increases dendrite excitability, but the underlying mechanisms remain elusive. Here we show that activation of β2-adrenoceptors promoted STD long-term synaptic potentiation at mouse hippocampal excitatory synapses by inactivating dendritic Kv1.1-containing potassium channels, which increased dendrite excitability and facilitated dendritic propagation of postsynaptic depolarization, potentially improving coincidental activation of pre- and postsynaptic terminals...
January 18, 2017: Neuron
https://www.readbyqxmd.com/read/28103136/inhibition-of-voltage-dependent-potassium-channels-mediates-camp-potentiated-insulin-secretion-in-rat-pancreatic-%C3%AE-cells
#19
Yunfeng Liu, Xiangqin Zhong, Yaqin Ding, Lele Ren, Tao Bai, Mengmeng Liu, Zhihong Liu, Yangyan Guo, Qing Guo, Yu Zhang, Jing Yang, Yi Zhang
Insulin secretion is essential for maintenance of glucose homeostasis. An important intracellular signal regulating insulin secretion is cAMP. In this report, we showed that an increase of cAMP induced by adenylyl cyclase (AC) activator forskolin or by cAMP analog db-cAMP not only potentiated insulin secretion but also inhibited Kv channels, and these effects were reversed by AC inhibitor SQ22536. The cAMP-mediated Kv channel inhibition resulted in prolongation of action potential duration, which partly accounts for the elevation of intracellular Ca(2+) induced by activation of cAMP signaling...
January 19, 2017: Islets
https://www.readbyqxmd.com/read/28103112/potassium-iodate-differently-regulates-the-proliferation-migration-and-invasion-of-human-thyroid-cancer-cells-via-modulating-mir-146a
#20
Yan Liu, Hong Li, Jiayue Zhang, Xu Gao
The effects of different doses of potassium iodate (KIO3) on the malignancy of thyroid cancer were investigated. Results showed that the proliferation, migration, and invasion of SW579 thyroid cancer cells were improved by 10(-6) M KIO3, which was associated with microRNA(miR)-146a deficit; 10(-2) M KIO3 significantly enhanced miR-146a level and suppressed SW579 cell proliferation, migration, and invasion. The diverse effects of KIO3 on SW579 cells were associated with the expression changes in miR-146a targets, Bcl-2, Bax, and caspase-3...
January 19, 2017: Cancer Investigation
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