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https://www.readbyqxmd.com/read/28748627/genetic-ablation-of-carbonic-anhydrase-ix-disrupts-gastric-barrier-function-via-claudin-18-downregulation-and-acid-backflux
#1
Taolang Li, Xuemei Liu, Brigitte Riederer, Katerina Nikolovska, Anurag Kumar Singh, Kari A Mäkelä, Anna Seidler, Yongjian Liu, Gerolf Gros, Helmut Bartels, Karl Heinz Herzig, Ursula Seidler
AIM: The study aims to explore the molecular mechanisms for the parietal cell loss and fundic hyperplasia observed in gastric mucosa of mice lacking the carbonic anhydrase 9 (CAIX). METHODS: We assessed the ability of CAIX knockout and WT gastric surface epithelial cells to withstand luminal acid load by measuring the pHi of exteriorized gastric mucosa in vivousing two photon confocal laser scanning microscopy. Cytokines and claudin-18A2 expression was analyzed by RT-PCR...
July 27, 2017: Acta Physiologica
https://www.readbyqxmd.com/read/28746613/crambe-crambe-abyssinica-and-sunflower-helianthus-annuus-protein-concentrates-production-methods-and-nutritional-properties-for-use-in-fish-feed
#2
Naglezi M Lovatto, Fernanda R Goulart, Bruno B Loureiro, Caroline S Speroni, Ana B B Bender, Sandro J Giacomini, João Radünz, Leila P DA Silva
The purpose of this study was to develop and improve protein concentration techniques for two industrial by-products with the potential for use in fish feed. In particular, we chemically characterized crambe meal and sunflower meal and their protein concentrates. Three different protein concentration methods were tested: isoelectric pH (pHi), acid pH and alkaline pH. For crambe and sunflower meals extraction using the pHi method was most efficient in terms of protein yield and crude protein content in the concentrates; this method also increased lysine and methionine content in the concentrates...
July 24, 2017: Anais da Academia Brasileira de Ciências
https://www.readbyqxmd.com/read/28745745/metal-free-intermolecular-cyclopropanation-between-alkenes-and-iodonium-ylides-mediated-by-phi-oac-2%C3%A2-bu4ni
#3
Jason Tao, Carl D Estrada, Graham K Murphy
A rapid, mild and metal-free intermolecular cyclopropanation between iodonium ylides and alkene-containing substrates mediated by PhI(OAc)2·Bu4NI is reported. Iodonium ylides of cyclic and acyclic 1,3-dicarbonyls were reacted with a variety of mono-, di-, tri- and tetra-substituted alkenes of various structural types to give 29 cyclopropanes in up to 97% yield.
July 26, 2017: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/28742733/intravoxel-incoherent-motion-model-free-determination-of-tissue-type-in-abdominal-organs-using-machine-learning
#4
Alexander Ciritsis, Cristina Rossi, Moritz C Wurnig, Valerie Phi Van, Andreas Boss
PURPOSE: For diffusion data sets including low and high b-values, the intravoxel incoherent motion model is commonly applied to characterize tissue. The aim of the present study was to show that machine learning allows a model-free approach to determine tissue type without a priori assumptions on the underlying physiology. MATERIALS AND METHODS: In 8 healthy volunteers, diffusion data sets were acquired using an echo-planar imaging sequence with 16 b-values in the range between 0 and 1000 s/mm...
July 24, 2017: Investigative Radiology
https://www.readbyqxmd.com/read/28741348/super-resolution-far-field-infrared-imaging-by-photothermal-heterodyne-imaging
#5
Zhongming Li, Kyle Aleshire, Masaru Kuno, Gregory V Hartland
Infrared (IR) imaging provides chemical-specific information without the need for exogenous labels. Conventional far-field IR imaging techniques are diffraction limited, which means an effective spatial resolution of > 5 μm with currently available optics. In this paper we present a novel far-field IR imaging technique based on photothermal heterodyne imaging (IR-PHI). In our version of IR-PHI an IR pump laser excites the sample, causing a small temperature rise that is detected by a counter-propagating visible probe beam...
July 25, 2017: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/28736746/malakoplakia-of-the-prostate-as-a-mimicker-of-prostate-cancer-on-prostate-health-index-and-magnetic-resonance-imaging-fusion-prostate-biopsy-a-case-report
#6
Nathaniel H Heah, Teck Wei Tan, Yung Khan Tan
Background: Isolated malakoplakia of the prostate is a rare inflammatory condition that has been clinically mistaken for prostatic malignancies. The development of Prostate Imaging Reporting and Data System (PI-RADS) classifications, and Prostate Health Index (PHI) has led to more accurate diagnosis of clinically significant disease and stratification of patients that may be at risk of prostate cancer. Case Presentation: We present a case of a 75-year-old male who was on follow-up with our hospital for elevated prostate specific antigen (PSA)...
2017: Journal of Endourology Case Reports
https://www.readbyqxmd.com/read/28734221/treatment-of-highly-toxic-cardboard-plant-wastewater-by-a-combination-of-electrocoagulation-and-electrooxidation-processes
#7
Erhan Gengec
The objective of this study was to investigate the removal efficiencies of the electrochemical treatment systems as an alternative for the treatment of cardboard plant wastewater (CPW). In accordance with this purpose, CPW was treated by electrocoagulation (EC) with Al electrodes and the effects of current density (CD), operating time (t), and initial pH (pHi) were investigated. The results showed that EC at optimum treatment conditions (CD: 7.5mA/cm(2), pHi: 7.0 and t: 60min) have limited removal efficiencies for total organic carbon (TOC; 17...
July 19, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28729787/patterns-of-dental-caries-among-school-children-assessed-using-caries-assessment-spectrum-and-treatment-tool
#8
Hisham El Batawi, Kausar Sadia Fakhruddin
OBJECTIVE: The present study aimed to assess and monitor patterns of dental caries among primary and permanent molars using Caries Assessment Spectrum and Treatment (CAST) index and to evaluate integration of CAST tool into patient health information (PHI) system of a Teaching Dental Hospital. MATERIALS AND METHODS: Dental records of n = 348 children, aged 7-9-years, attending University Dental Hospital Sharjah, for routine checkup and treatment as part of School Dental Program were assessed and translated into CAST codes...
April 2017: European Journal of Dentistry
https://www.readbyqxmd.com/read/28719339/modulation-of-oxidative-and-glycolytic-skeletal-muscle-fibers-na-h-exchanger1-nhe1-and-na-hco3-co-transporter1-nbc1-genes-and-proteins-expression-in-type-2-diabetic-rat-streptozotocin-high-fat-diet-following-long-term-endurance-training
#9
A Monazzami, H Rajabi, R Ghrakhanlou, K Yari, Z Rahimi
Diabetes is known to alter both oxidative and glycolytic pathways in a fiber type-dependent manner. The aim of present study was to investigate the effects of endurance training on muscle NHE1 and NBC1 genes and proteins expression in type 2 diabetic rats. Male wistar rats (n=30), 4 weeks old and 95.7±10.8g, were randomly selected and divided into control, diabetic without training and diabetic with training groups. Diabetes was induced by injection of low dose of streptotozin and feeding with high-fat diet...
May 20, 2017: Cellular and Molecular Biology
https://www.readbyqxmd.com/read/28718069/neurological-involvement-in-patients-with-acute-recent-hiv-1-infection-a-case-control-study
#10
Juan Ambrosioni, Francisca Artigues, David Nicolás, Judit Peñafiel, Fernando Agüero, Christian Manzardo, María Mar Mosquera, Sonsoles Sánchez-Palomino, Elisa De Lazzari, María A Marcos, Montserrat Plana, José M Miró
Primary HIV-1 infection is a relevant period for its virological and epidemiological consequences. Most patients present a symptomatic disease that can be potentially serious, but neurological involvement during primary HIV-1 infection has been poorly studied. The aim of this study was to describe the characteristics and outcomes of primary HIV-1 infection patients presenting neurological symptoms and to compare them with primary HIV-1 infection patients without neurological involvement. Retrospective case-control study (1:3) comparing primary HIV-1 infection patients with and without neurological involvement enrolled in the Acute/Recent Hospital Clinic PHI Cohort between 1997 and 2016...
July 17, 2017: Journal of Neurovirology
https://www.readbyqxmd.com/read/28714315/two-new-linear-acetogenins-from-the-fruits-of-goniothalamus-gracilipes
#11
Quy Hung Trieu, Huong Doan Thi Mai, Marc Litaudon, Dao Phi Thi, Tuan Anh Tran, Van Hung Nguyen, Van Minh Chau, Van Cuong Pham
Two new linear acetogenins, gracilipin A (1) and methylsaccopetrin A (2) along with seven known compounds, saccopetrin A (3), 7,3',4'-trimethylquercetin (4), rhamnazin (5), casticin (6), isokanugin (7), melisimplexin (8) and 5-hydroxy-3,7-dimethoxy-3',4'-methylenedioxyflavone (9) were isolated from the fruits of Goniothalamus gracilipes Bân. Their structures were established by spectral analysis, such as mass spectrometry, 1D-NMR, 2D-NMR and circular dichroism (CD). Compounds 1 and 3 showed cytotoxic activity against KB cell line with IC50 values of 14...
July 16, 2017: Natural Product Research
https://www.readbyqxmd.com/read/28711958/systematic-assessment-of-urinary-hydroxy-oxo-glutarate-for-diagnosis-and-follow-up-of-primary-hyperoxaluria-type-iii
#12
Ada Ventzke, Markus Feldkötter, Andrew Wei, Jutta Becker, Bodo B Beck, Bernd Hoppe
BACKGROUND: There are currently three distinct autosomal recessive inherited types of primary hyperoxaluria (PH: PHI, PHII, and PHIII), all characterized by the endogenous overproduction of oxalate. The PH type is difficult to differentiate by clinical features alone. In addition to universal general characteristics to all hyperoxaluria subtypes, specific urinary metabolites can be detected: glycolate in PHI, L-glyceric acid in PHII, and hydroxy-oxo-glutarate (HOG) in PHIII. PHIII is considered to be the most benign form and is characterized by severe recurrent urolithiasis in early life, followed by clinical remission in many, but not all patients...
July 15, 2017: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/28708873/impact-of-early-cart-on-hiv-blood-and-semen-compartments-at-the-time-of-primary-infection
#13
Antoine Chéret, Christine Durier, Adeline Mélard, Mickaël Ploquin, Julia Heitzmann, Camille Lécuroux, Véronique Avettand-Fenoël, Ludivine David, Gilles Pialoux, Jean-Marie Chennebault, Michaela Müller-Trutwin, Cécile Goujard, Christine Rouzioux, Laurence Meyer
BACKGROUND: HIV-infected cells in semen facilitate viral transmission. We studied the establishment of HIV reservoirs in semen and blood during PHI, along with systemic immune activation and the impact of early cART. METHODS: Patients in the ANRS-147-OPTIPRIM trial received two years of early cART. Nineteen patients of the trial were analyzed, out of which 8 had acute PHI (WB ≤1 Ab). We quantified total cell-associated (ca) HIV-DNA in blood and semen and HIV-RNA in blood and semen plasma samples, collected during PHI and at 24 months of treatment...
2017: PloS One
https://www.readbyqxmd.com/read/28707748/catalytic-nitrene-transfer-to-alkynes-a-novel-and-versatile-route-for-the-synthesis-of-sulfinamides-and-iso-thiazoles
#14
Pedro J Pérez, M Mar Diaz-Requejo, Manuel R Rodríguez, Álvaro Beltrán, Eleuterio Alvarez, Angel Mudarra, Feliu Maseras
A novel transformation is reported for the reaction of terminal or internal alkynes with the nitrene precursor PhI=NTs (Ts = p-toluenesulfonyl) in the presence of catalytic amounts of TpBr3Cu(NCMe) (TpBr3 = hydrotris(3,4,5-tribromo-pyrazolylborate). Two products containing an imine functionality have been isolated from the reaction mixtures, identified as sulfinamides and iso-thiazoles. The former correspond to the formal reduction of the sulfone group into sulfoxide, whereas the latter involves the insertion of an alkyne carbon atom into the aromatic ring of the N-tosyl moiety...
July 14, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28707628/brainframe-a-node-level-heterogeneous-accelerator-platform-for-neuron-simulations
#15
Georgios Smaragdos, Georgios Chatzikonstantis, Rahul Kukreja, Harry Sidiropoulos, Dimitrios Rodopoulos, Ioannis Sourdis, Zaid Al-Ars, Christoforos Kachris, Dimitrios Soudris, Chris de Zeeuw, Christos Strydis
OBJECTIVE: The advent of High-Performance Computing (HPC) in recent years has led to its increasing use in brain study through computational models. The scale and complexity of such models are constantly increasing, leading to challenging computational requirements. Even though modern HPC platforms can often deal with such challenges, the vast diversity of the modeling field does not permit for a homogeneous acceleration platform to effectively address the complete array of modeling requirements...
July 14, 2017: Journal of Neural Engineering
https://www.readbyqxmd.com/read/28705420/is-it-necessary-to-perform-full-pathologic-review-of-all-gastric-remnants-following-sleeve-gastrectomy
#16
S K Hansen, B J Pottorf, H W Hollis, J L Rogers, F A Husain
BACKGROUND: This study attempts to determine if enough pathological abnormalities in gastric remnants from sleeve gastrectomy exist to warrant full pathologic evaluation in all remnants. METHODS: Data was collected on patients undergoing sleeve gastrectomy between 08/01/2011 and 06/30/2014. Significant abnormalities were classified as any pathology that might require follow-up or treatment beyond standard follow-up. Age, comorbidities, gender, and Helicobacter pylori titers were analyzed and compared with pathology specimens using 95% confidence intervals and Phi contingency coefficients...
July 1, 2017: American Journal of Surgery
https://www.readbyqxmd.com/read/28704808/enhanced-reactive-oxygen-species-production-acidic-cytosolic-ph-and-upregulated-na-h-exchanger-nhe-in-dicer-deficient-cd4-t-cells
#17
Yogesh Singh, Yuetao Zhou, Shaqiu Zhang, Khalid N M Abdelazeem, Bernat Elvira, Madhuri S Salker, Florian Lang
BACKGROUND: MicroRNAs (miRNAs) negatively regulate gene expression at a post-transcriptional level. Dicer, a cytoplasmic RNase III enzyme, is required for the maturation of miRNAs from precursor miRNAs. Dicer, therefore, is a critical enzyme involved in the biogenesis and processing of miRNAs. Several biological processes are controlled by miRNAs, including the regulation of T cell development and function. T cells generate reactive oxygen species (ROS) with parallel H+ extrusion accomplished by the Na+/H+-exchanger 1 (NHE1)...
July 14, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28702875/private-health-insurance-incentives-in-australia-in-search-of-cost-effective-adjustments
#18
P Marcin Sowa, Sam Kault, Joshua Byrnes, Shu-Kay Ng, Tracy Comans, Paul A Scuffham
BACKGROUND: The appropriate structure, scope and cost of government incentives in the private health insurance (PHI) market is a matter of ongoing debate. OBJECTIVE: In order to inform policy decisions we designed a two-stage study to (1) model the uptake of PHI covering hospital treatment in Australia, and (2) identify the costs of various policy scenarios to the government. METHODS: Using a microsimulation with a cost-benefit component, we modelled the insurance decisions made by individuals who collectively represented the Australian insurance population in the financial year 2014-15...
July 12, 2017: Applied Health Economics and Health Policy
https://www.readbyqxmd.com/read/28700346/restoring-microenvironmental-redox-and-ph-homeostasis-inhibits-neoplastic-cell-growth-and-migration-therapeutic-efficacy-of-esomeprazole-plus-sulfasalazine-on-3-mca-induced-sarcoma
#19
Enrica Balza, Patrizia Castellani, Paola Sanchez Moreno, Patrizia Piccioli, Iria Medraño-Fernandez, Claudia Semino, Anna Rubartelli
Neoplastic cells live in a stressful context and survive thanks to their ability to overcome stress. Thus, tumor cell responses to stress are potential therapeutic targets. We selected two such responses in melanoma and sarcoma cells: the xc- antioxidant system, that opposes oxidative stress, and surface v-ATPases that counteract the low pHi by extruding protons, and targeted them with the xc- blocker sulfasalazine and the proton pump inhibitor esomeprazole. Sulfasalazine inhibited the cystine/cysteine redox cycle and esomeprazole decreased pHi while increasing pHe in tumor cell lines...
June 27, 2017: Oncotarget
https://www.readbyqxmd.com/read/28699566/entity-recognition-from-clinical-texts-via-recurrent-neural-network
#20
Zengjian Liu, Ming Yang, Xiaolong Wang, Qingcai Chen, Buzhou Tang, Zhe Wang, Hua Xu
BACKGROUND: Entity recognition is one of the most primary steps for text analysis and has long attracted considerable attention from researchers. In the clinical domain, various types of entities, such as clinical entities and protected health information (PHI), widely exist in clinical texts. Recognizing these entities has become a hot topic in clinical natural language processing (NLP), and a large number of traditional machine learning methods, such as support vector machine and conditional random field, have been deployed to recognize entities from clinical texts in the past few years...
July 5, 2017: BMC Medical Informatics and Decision Making
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