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https://www.readbyqxmd.com/read/28937579/pyrethroids-inhibit-k2p-channels-and-activate-sensory-neurons-basis-of-insecticide-induced-paraesthesias
#1
Aida Castellanos, Alba Andres, Laura Bernal, Gerard Callejo, Nuria Comes, Arcadi Gual, Jonathan P Giblin, Carolina Roza, Xavier Gasull
Pyrethroid insecticides are widely used for pest control, in agriculture or in human public health commonly as a topical treatment for scabies and head lice. Exposure to pyrethroids such as permethrin or tetramethrin (TM) causes sensory alterations such as transient pain, burning, stinging sensations and paraesthesias. Despite the well-known effects of pyrethroids on sodium channels, actions on other channels that control sensory neuron excitability are less studied. Given the role of two-pore domain potassium (K2P) channels in modulating sensory neuron excitability and firing, both in physiological and pathological conditions, we examined the effect of pyrethroids on K2P channels mainly expressed in sensory neurons...
September 19, 2017: Pain
https://www.readbyqxmd.com/read/28933853/exchange-hole-dipole-dispersion-model-for-accurate-energy-ranking-in-molecular-crystal-structure-prediction-ii-non-planar-molecules
#2
Sarah R Whittleton, Alberto Otero-de-la-Roza, Erin R Johnson
The crystal structure prediction (CSP) of a given compound from its molecular diagram is a fundamental challenge in computational chemistry with implications in relevant technological fields. A key component of CSP is the method to calculate the lattice energy of a crystal, which allows the ranking of candidate structures. This work is the second part of our investigation to assess the potential of the exchange-hole dipole moment dispersion (XDM) model for crystal structure prediction. In this article, we study the relatively large, non-planar, mostly flexible molecules in the first five blind tests held by the Cambridge Crystallographic Data Centre...
September 21, 2017: Journal of Chemical Theory and Computation
https://www.readbyqxmd.com/read/28920133/experience-with-a-community-based-multidisciplinary-memory-clinic-a-primary-care-perspective
#3
Sinead Z Wang, Gilbert Cs Tan, Xue Fei Wang, Jacqueline Giovanna De Roza, Linda Lh Lim, Nagaendran Kandiah
No abstract text is available yet for this article.
August 2017: Annals of the Academy of Medicine, Singapore
https://www.readbyqxmd.com/read/28920083/differential-alterations-of-intracellular-ca-2-dynamics-induced-by-cocaine-and-methylphenidate-in-thalamocortical-ventrobasal-neurons
#4
José L Rozas, Belén Goitia, Verónica Bisagno, Francisco J Urbano
The ventrobasal (VB) thalamus relay nucleus processes information from rodents' whiskers, projecting to somatosensory cortex. Cocaine and methylphenidate (MPH) have been described to differentially alter intrinsic properties of, and spontaneous GABAergic input to, VB neurons. Here we studied using bis-fura 2 ratiometric fluorescence the effects of cocaine and MPH on intracellular [Ca(2+)] dynamics at the soma and dendrites of VB neurons. Cocaine increased baseline fluorescence in VB somatic and dendritic compartments...
July 2017: Translational Brain Rhythmicity
https://www.readbyqxmd.com/read/28917899/polysaccharides-from-brown-algae-sargassum-duplicatum-the-structure-and-anticancer-activity-in-vitro
#5
Roza V Usoltseva, Stanislav D Anastyuk, Natalia M Shevchenko, Valerii V Surits, Artem S Silchenko, Vladimir V Isakov, Tatiana N Zvyagintseva, Pham Duc Thinh, Svetlana P Ermakova
The laminaran SdL and fucoidan SdF were isolated from brown algae Sargassum duplicatum. SdL was 1,3;1,6-β-d-glucan (1,3:1,6=6:1) with a main chain, represented by 1,3-linked glucose residues, due to NMR spectroscopy data. Single glucose residues could form branches at C6. Unusual structure of fucoidan SdF was studied by chemical and enzymatic methods, NMR spectroscopy of desulfated and deacetylated polysaccharide and mass spectrometry of fucoidan fragments labeled with (18)O. Fucoidan was sulfated (31.7%) and acetylated galactofucan (Fuc:Gal∼1:1) with a main chain of 1,4-linked alternating α-l-fucose and β-d-galactose residues...
November 1, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28913755/management-and-clinical-outcome-of-stable-coronary-artery-disease-in-austria-results-from-5%C3%A2-years-of-the-clarify-registry
#6
Irene M Lang, Roza Badr-Eslam, Nicola Greenlaw, Robin Young, Philippe Gabriel Steg
BACKGROUND: The population of patients with established coronary artery disease (CAD) is growing because of an improvement in outcomes and survival from acute disease episodes. Nevertheless, these patients remain at high risk of cardiovascular events. Thus, CAD management is important in prevention of disease progression. The objective of this analysis was to describe disease management and clinical outcome of Austrian outpatients with stable CAD over 5 years by using data from the international CLARIFY registry...
September 14, 2017: Wiener Klinische Wochenschrift
https://www.readbyqxmd.com/read/28899691/transcriptome-modulation-of-bovine-trophoblast-cells-in-vitro-by-neospora-caninum
#7
Pilar Horcajo, Laura Jiménez-Pelayo, Marta García-Sánchez, Javier Regidor-Cerrillo, Esther Collantes-Fernández, Daniel Rozas, Nina Hambruch, Christiane Pfarrer, Luis Miguel Ortega-Mora
Neospora caninum is one of the most efficient transplacentally transmitted pathogens in cattle and is a cause of abortion in this domestic species. The invasion and proliferation of Neospora caninum in the placenta and its dissemination to the foetus are crucial events in the outcome of an infection. In the bovine placenta, the placentomes are formed by maternal caruncles, which are delimited by a maternal epithelium and foetal cotyledons, which are delimited by an epithelial layer named the trophoblast. These epithelia form a physical barrier against foetal infection...
September 9, 2017: International Journal for Parasitology
https://www.readbyqxmd.com/read/28898332/-prediction-of-hospital-mortality-of-st-elevation-myocardial-infarction-using-timi-score
#8
Héctor Ugalde, María Cecilia Yubini, Sebastián Rozas, María Ignacia Sanhueza, Hernán Jara
BACKGROUND: Thrombolysis in myocardial infarction risk score (TIMI-RS) was designed to predict early mortality in patients with a ST elevation acute myocardial infarction (STEAMI). AIM: To evaluate the predictive capacity for hospital mortality of TIMI-RS. MATERIAL AND METHODS: Patients with ≤ 12-hour evolution STEAMI were selected from a prospective registry of all patients hospitalized in our coronary unity within January 1988 and December 2005...
May 2017: Revista Médica de Chile
https://www.readbyqxmd.com/read/28895099/neurological-and-multiple-organ-involvement-due-to-paracoccidioides-brasiliensis-and-hiv-co-infection-diagnosed-at-autopsy
#9
Sergio Monteiro de Almeida, Thiago H Roza, Gabriel L O Salvador, João C B França, Luine Rosele Renaud Vidal, Meri Bordignon Nogueira, Lubomira Veronica Oliva, Luis Fernando Bleggi Torres, Lucia Helena de Noronha
Paracoccidioidomycosis (PCM), caused by Paracoccidioides brasiliensis, is the most prevalent systemic mycosis among immunocompetent patients in Latin America; it is rare in immunocompromised patients. The estimated frequency of central nervous system (CNS) involvement in the HIV/PCM population was 2.5%. We report a case of HIV/P. brasiliensis co-infection, with neurological (NPCM) and multiple organ involvement, indicating a diagnosis of AIDS. PCM diagnosis was established during the autopsy. This is the first described case of HIV/P...
September 11, 2017: Journal of Neurovirology
https://www.readbyqxmd.com/read/28893410/an-artificial-neural-network-to-predict-resting-energy-expenditure-in-obesity
#10
Emmanuel Disse, Séverine Ledoux, Cécile Bétry, Cyrielle Caussy, Christine Maitrepierre, Muriel Coupaye, Martine Laville, Chantal Simon
BACKGROUND & AIMS: The resting energy expenditure (REE) determination is important in nutrition for adequate dietary prescription. The gold standard i.e. indirect calorimetry is not available in clinical settings. Thus, several predictive equations have been developed, but they lack of accuracy in subjects with extreme weight including obese populations. Artificial neural networks (ANN) are useful predictive tools in the area of artificial intelligence, used in numerous clinical fields...
September 1, 2017: Clinical Nutrition: Official Journal of the European Society of Parenteral and Enteral Nutrition
https://www.readbyqxmd.com/read/28862697/identification-of-a-group-s-physiological-synchronization-with-earth-s-magnetic-field
#11
Inga Timofejeva, Rollin McCraty, Mike Atkinson, Roza Joffe, Alfonsas Vainoras, Abdullah A Alabdulgader, Minvydas Ragulskis
A new analysis technique for the evaluation of the degree of synchronization between the physiological state of a group of people and changes in the Earth's magnetic field based on their cardiac inter-beat intervals was developed and validated. The new analysis method was then used to identify clusters of similar synchronization patterns in a group of 20 individuals over a two-week period. The algorithm for the identification of slow wave dynamics for every person was constructed in order to determine meaningful interrelationships between the participants and the local magnetic field data...
September 1, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28855309/il-21-receptor-signaling-is-essential-for-optimal-cd4-t-cell-function-and-control-of-mycobacterium-tuberculosis-infection-in-mice
#12
Satyanarayana Swamy Cheekatla, Deepak Tripathi, Sambasivan Venkatasubramanian, Padmaja Paidipally, Elwyn Welch, Amy R Tvinnereim, Roza Nurieva, Ramakrishna Vankayalapati
In this study, we determined the role of IL-21R signaling in Mycobacterium tuberculosis infection, using IL-21R knockout (KO) mice. A total of 50% of M. tuberculosis H37Rv-infected IL-21R KO mice died in 6 mo compared with no deaths in infected wild type (WT) mice. M. tuberculosis-infected IL-21R KO mice had enhanced bacterial burden and reduced infiltration of Ag-specific T cells in lungs compared with M. tuberculosis-infected WT mice. Ag-specific T cells from the lungs of M. tuberculosis-infected IL-21R KO mice had increased expression of T cell inhibitory receptors, reduced expression of chemokine receptors, proliferated less, and produced less IFN- γ, compared with Ag-specific T cells from the lungs of M...
August 30, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28852633/antibacterial-effects-of-different-concentrations-of-althaea-officinalis-root-extract-versus-0-2-chlorhexidine-and-penicillin-on-streptococcus-mutans-and-lactobacillus-in-vitro
#13
Roza Haghgoo, Majid Mehran, Elahe Afshari, Hamide Farajian Zadeh, Motahare Ahmadvand
AIMS AND OBJECTIVES: The aims of the present study were to determine and compare the effects of different concentrations of Althaea officinalis extract, 0.2% chlorhexidine (CHX), and penicillin on Streptococcus mutans and Lactobacillus acidophilus in vitro. MATERIALS AND METHODS: The laboratory study was done, for a period of 8 weeks. Minimum inhibitory concentration (MIC) in the test tube, minimum bactericidal concentration (MBC) in a plate culture medium, and growth inhibition zone diameter methods were used to compare the antibacterial effects of 0...
July 2017: Journal of International Society of Preventive & Community Dentistry
https://www.readbyqxmd.com/read/28845972/biocompatible-periodic-mesoporous-ionosilica-nanoparticles-with-ammonium-walls-application-to-drug-delivery
#14
Roza Bouchal, Morgane Daurat, Magali Gary-Bobo, Afitz Da Silva, Leïla Lesaffre, Dina Aggad, Anastasia Godefroy, Philippe Dieudonné, Clarence Charnay, Jean-Olivier Durand, Peter Hesemann
Periodic mesoporous ionosilica nanoparticles with ammonium walls were synthesized exclusively from a trisilylated ammonium precursor. The nanoparticles display a uniform particle size, together with a high specific surface area and an ordered hexagonal pore architecture. Completely biocompatible in vitro and in vivo, the nanoparticles are efficiently endocytosed by RAW 264.7 macrophages and used as carrier vehicles for anionic drugs. Diclofenac-loaded ionosilica nanoparticles are very efficient in inhibiting lipopolysaccharides-induced inflammation...
September 20, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28835439/management-of-rivaroxaban-or-apixaban-associated-major-bleeding-with-prothrombin-complex-concentrates-a-cohort-study
#15
Ammar Majeed, Anna Ågren, Margareta Holmström, Maria Bruzelius, Roza Chaireti, Jacob Odeberg, Eva-Lotta Hempel, Maria Magnusson, Tony Frisk, Sam Schulman
There is uncertainty regarding the effectiveness and occurrence of thromboembolic events in patients treated with prothrombin complex concentrates (PCC) for management of major bleeding events (MBE) on rivaroxaban or apixaban. We investigated the effectiveness of PCC given for management of MBE on rivaroxaban or apixaban. Between 1/1/2014 and 1/10/2016, we prospectively included patients treated with PCC for management of MBE on rivaroxaban or apixaban. The effectiveness of PCC was assessed using the International Society of Thrombosis and Hemostasis' Scientific and Standardization Subcommittee criteria for the assessment of effectiveness of major bleeding management...
August 23, 2017: Blood
https://www.readbyqxmd.com/read/28831115/a-mir-snp-biomarker-linked-to-an-increased-lung-cancer-survival-by-mirna-mediated-down-regulation-of-fzd4-expression-and-wnt-signaling
#16
Jing Lin, Roza Zandi, Ruping Shao, Jian Gu, Yuanqin Ye, Jing Wang, Yang Zhao, Alexander Pertsemlidis, Ignacio I Wistuba, Xifeng Wu, Jack A Roth, Lin Ji
Through a new hypothesis-driven and microRNA-pathway-based SNP (miR-SNP) association study we identified a novel miR-SNP (rs713065) in the 3'UTR region of FZD4 gene linked with decreased risk of death in early stage NSCLC patients. We determined biological function and mechanism of action of this FZD4-miR-SNP biomarker in a cellular platform. Our data suggest that FZD4-miR-SNP loci may significantly influence overall survival in NSCLC patients by specifically interacting with miR-204 and modulating FZD4 expression and cellular function in the Wnt-signaling-driven tumor progression...
August 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28812732/genome-of-the-pitcher-plant-cephalotus-reveals-genetic-changes-associated-with-carnivory
#17
Kenji Fukushima, Xiaodong Fang, David Alvarez-Ponce, Huimin Cai, Lorenzo Carretero-Paulet, Cui Chen, Tien-Hao Chang, Kimberly M Farr, Tomomichi Fujita, Yuji Hiwatashi, Yoshikazu Hoshi, Takamasa Imai, Masahiro Kasahara, Pablo Librado, Likai Mao, Hitoshi Mori, Tomoaki Nishiyama, Masafumi Nozawa, Gergő Pálfalvi, Stephen T Pollard, Julio Rozas, Alejandro Sánchez-Gracia, David Sankoff, Tomoko F Shibata, Shuji Shigenobu, Naomi Sumikawa, Taketoshi Uzawa, Meiying Xie, Chunfang Zheng, David D Pollock, Victor A Albert, Shuaicheng Li, Mitsuyasu Hasebe
Carnivorous plants exploit animals as a nutritional source and have inspired long-standing questions about the origin and evolution of carnivory-related traits. To investigate the molecular bases of carnivory, we sequenced the genome of the heterophyllous pitcher plant Cephalotus follicularis, in which we succeeded in regulating the developmental switch between carnivorous and non-carnivorous leaves. Transcriptome comparison of the two leaf types and gene repertoire analysis identified genetic changes associated with prey attraction, capture, digestion and nutrient absorption...
February 6, 2017: Nature ecology & evolution
https://www.readbyqxmd.com/read/28800231/accurate-modeling-of-water-clusters-with-density-functional-theory-using-atom-centered-potentials
#18
Jake D Holmes, Alberto Otero-de-la-Roza, Gino A DiLabio
The ability of atom-centered potentials (ACPs) to improve the modeling of water clusters using density-functional methods is explored. Water-specific ACPs were developed using accurate ab initio reference data to correct the deficiencies of the BHandHLYP density functional in the calculation of absolute and relative binding energies of water clusters. In conjunction with aug-cc-pVTZ basis sets and with or without dispersion corrections, it is possible to obtain absolute binding energies for water clusters containing up to 10 H2O molecules to within 0...
August 30, 2017: Journal of Chemical Theory and Computation
https://www.readbyqxmd.com/read/28798332/absence-of-grail-promotes-cd8-t-cell-anti-tumour-activity
#19
Cara Haymaker, Yi Yang, Junmei Wang, Qiang Zou, Anupama Sahoo, Andrei Alekseev, Divyendu Singh, Krit Ritthipichai, Yared Hailemichael, Oanh N Hoang, Hong Qin, Kimberly S Schluns, Tiejun Wang, Willem W Overwijk, Shao-Cong Sun, Chantale Bernatchez, Larry W Kwak, Sattva S Neelapu, Roza Nurieva
T-cell tolerance is a major obstacle to successful cancer immunotherapy; thus, developing strategies to break immune tolerance is a high priority. Here we show that expression of the E3 ubiquitin ligase Grail is upregulated in CD8(+) T cells that have infiltrated into transplanted lymphoma tumours, and Grail deficiency confers long-term tumour control. Importantly, therapeutic transfer of Grail-deficient CD8(+) T cells is sufficient to repress established tumours. Mechanistically, loss of Grail enhances anti-tumour reactivity and functionality of CD8(+) T cells...
August 10, 2017: Nature Communications
https://www.readbyqxmd.com/read/28795114/data-to-genetic-risk-assessment-on-high-density-cholesterol-level-associated-polymorphisms-in-hungarian-general-and-roma-populations
#20
Péter Pikó, Szilvia Fiatal, Zsigmond Kósa, János Sándor, Róza Ádány
Data obtained by genotyping single nucleotide polymorphisms (SNPs) related to high-density lipoprotein cholesterol (HDL-C) levels were utilized in Genetic Risk Score [unweighted (GRS) and weighted (wGRS)] computation on Hungarian general and Roma populations. The selection process of the SNPs as well as the results obtained are published in our research article (Piko et al., 2017) [1]. Linkage analyses were performed by study groups. Study populations were stratified by quintiles of weighted Genetic Risk Score...
October 2017: Data in Brief
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