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https://www.readbyqxmd.com/read/29151182/electrical-cardioversion-of-patients-with-implanted-pacemaker-or-cardioverter-defibrillator-results-of-a-survey-of-german-centers-and-systematic-review-of-the-literature
#1
J Lüker, A Sultan, T Plenge, J van den Bruck, C-H Heeger, S Meyer, K Mischke, R R Tilz, D Vollmann, G Nölker, B Schäffer, S Willems, D Steven
AIMS: A relevant number of patients presenting for electrical cardioversion carry a pacemaker (PM) or ICD. Case reports suggest a potential hazard of external cardioversion/defibrillation. The incidence of shock related device complications is unknown. No guidelines or recommendations by international medical societies for a cardioversion protocol of cardiovascular implantable electronic device (CIED) patients exist. We conducted a nationwide survey to gather real-world clinical data on the current clinical approach towards these patients during electrical cardioversion and to estimate the incidence of shock-related complications...
November 18, 2017: Clinical Research in Cardiology: Official Journal of the German Cardiac Society
https://www.readbyqxmd.com/read/29149900/immunogenic-potential-of-a-salmonella-typhimurium-live-vaccine-for-pigs-against-monophasic-salmonella-typhimurium-dt-193
#2
Tobias Theuß, Elke Ueberham, Jörg Lehmann, Thomas Lindner, Sven Springer
BACKGROUND: Monophasic Salmonella Typhimurium (mSTM) strains account for up to 8.6% of all human Salmonellosis cases. They have an increasing prevalence during recent years and several human cases with hospitalisation were reported. These strains are often isolated from pigs and pork - one primary source of human infection. A Salmonella Typhimurium (STM) live vaccine has been proven successful in controlling of STM infections in pigs for many years. The aim of this study was to test the immunogenicity of the vaccine in weaners during oral challenge with a virulent mSTM strain and to examine the kinetics of STM-specific IgA, IgM and IgG antibodies induced by vaccination and infection...
November 17, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/29148211/effect-of-tetrahydrofuran-on-the-solubilisation-and-depolymerisation-of-cellulose-in-a-biphasic-system
#3
Changwei Hu, Zhicheng Jiang, Pingping Zhao, Jianmei Li, Xudong Liu
The dissolution of cellulose from biomass is a crucial but complicated issue for the utilisation of biomass resources, because of the extreme insolubility of cellulose. Herein, a biphasic NaCl-H2O-tetrahydrofuran system was studied, where most of the pure microcrystalline cellulose (M-cellulose, 96.6% conversion at 220 oC) and that contained in actual biomass were converted. Nearly a half of O(6)H***O(3) intermolecular hydrogen bonding could be broken by THF in H2O-THF co-solvent system, whereas the cleavage of O(2)H***O(6) intramolecular hydrogen bonding by H2O was significantly inhibited...
November 17, 2017: ChemSusChem
https://www.readbyqxmd.com/read/29148136/effects-of-sensitive-electrical-stimulation-based-somatosensory-cueing-in-parkinson-s-disease-gait-and-freezing-of-gait-assessment
#4
Benoît Sijobert, Christine Azevedo, David Andreu, Claudia Verna, Christian Geny
This study aims to investigate the effect of a somatosensory cueing on gait disorders in subjects with Parkinson's disease (PD). After having performed stepping in place and timed up and go assessing tasks, 13 participants with PD were equipped with an electrical stimulator and an inertial measurement unit (IMU) located under the lateral malleolus on the sagittal plane. Electrodes were positioned under the arch of the foot and electrical stimulation (ES) parameters (five 500 µs/phase charge-balanced biphasic pulses delivered at 200 Hz, repeated four times at 10 Hz) adjusted to deliver a sensitive signal...
November 2017: Artificial Organs
https://www.readbyqxmd.com/read/29148099/circulating-pcsk9-is-lowered-acutely-following-surgery
#5
Irena Druce, Hussein Abujrad, Seham Chaker, Hilary Meggison, Andrew Hill, Angela Raymond, Janice Mayne, Teik Chye Ooi
BACKGROUND: A decrease in serum low-density lipoprotein cholesterol (LDL-C) is well documented after acute stress. Plasma proprotein convertase subtilisin kexin 9 (PCSK9), which promotes degradation of low-density lipoprotein receptor (LDL-R) resulting in reduced plasma clearance of low-density lipoproteins (LDL) and an increase in serum LDL-C, would be predicted to decrease. Yet, a few studies have demonstrated an increase 1-8 days after acute stress. Our objective was to assess the earlier status of plasma PCSK9, within the first 24 hours of onset of stress...
November 17, 2017: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/29147606/temporal-and-spatial-heterogeneity-of-programmed-cell-death-1-ligand-1-expression-in-malignant-mesothelioma
#6
Simone B S P Terra, Aaron S Mansfield, Haidong Dong, Tobias Peikert, Anja C Roden
Background: Programmed Cell Death 1-Ligand 1 (PD-L1) and Programmed Death Protein 1 (PD-1) blocking antibodies are promising immunotherapies for malignancies. We have previously shown PD-L1 expression in 40% of malignant mesothelioma (MM); however, the temporal and spatial heterogeneity of its expression has not been thoroughly studied. We compared PD-L1 expression between paired primary and metastatic MM. Design: Pathology files (1995-2016) were searched for MM with tissue from multiple sites and/or time points...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/29147435/gliosarcoma-in-young-adults-a-rare-variant-of-glioblastoma
#7
Neha Kakkar, Jaspreet Kaur, Gunjesh Kumar Singh, Pragya Singh, Fouzia Siraj, Ajay Gupta
Gliosarcoma is a rare central nervous system (CNS) malignancy. It is characterized by classical biphasic histological pattern with both glial and sarcomatous components, often seen in fifth and sixth decade of life. They are generally located in the supratentorial region. Due to its rarity, exact treatment recommendations are not available in literature. Since it is considered as a variant of glioblastoma multiforme (GBM), it is treated with surgery followed by adjuvant radiotherapy and temozolomide-based chemotherapy...
April 2017: World Journal of Oncology
https://www.readbyqxmd.com/read/29146538/rational-design-of-polysorbate-80-stabilized-human-serum-albumin-nanoparticles-tailored-for-high-drug-loading-and-entrapment-of-irinotecan
#8
Neetika Taneja, Kamalinder K Singh
Human serum albumin (HSA) nanoparticles are considered to be versatile carrier of anticancer agents in efficiently delivering the drug to the tumor site without causing any toxicity. The aim of the study was to develop stable HSA nanoparticles (NPs) of drug irinotecan (Iro) having slightly water solubility and moderate HSA binding. A novel strategy of employing a hydrophilic non-ionic surfactant polysorbate 80 which forms protein-polysorbate 80 complex with increased affinity and improvement in Iro-HSA binding has been used to maximize the loading and entrapment efficiency of Iro in HSA-NPs...
November 13, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/29146333/comparative-time-course-of-lipid-and-myofibrillar-protein-oxidation-in-different-biphasic-systems-under-hydroxyl-radical-stress
#9
Jiayi Yang, Youling L Xiong
This study aimed to investigate the relative reaction rate of protein and lipid oxidation in different biphasic model systems (linoleic acid; liposome; emulsion) containing myofibrillar protein (MFP at 1, 8 and 20 mg/mL) under hydroxyl radical stress. Protein oxidation markers exhibited significant changes in 2 h: reduced tryptophan fluorescence intensity, carbonyl formation, and extensive polymerization of myosin. In contrast, no detectable changes (P > .05) in lipid peroxide occurred within 2 h except for samples with 1 mg/mL MFP which showed an early TBARS formation...
March 15, 2018: Food Chemistry
https://www.readbyqxmd.com/read/29146198/bisphenol-a-alternatives-bisphenol-s-and-bisphenol-f-interfere-with-thyroid-hormone-signaling-pathway-in%C3%A2-vitro-and-in%C3%A2-vivo
#10
Yin-Feng Zhang, Xiao-Min Ren, Yuan-Yuan Li, Xiao-Fang Yao, Chuan-Hai Li, Zhan-Fen Qin, Liang-Hong Guo
The wide use of the alternatives to bisphenol A (BPA) has raised concerns about their potential toxicities. Considering the disrupting activity of BPA on thyroid hormone (TH) signaling, we investigated whether bisphenol S (BPS) and bisphenol F (BPF), two leading alternatives, could interfere with TH signaling pathway using a series of assays in vitro and in vivo. In the fluorescence competitive binding assay, we found BPS and BPF, like BPA, bound to TH receptors (TRα and TRβ), with the binding potencies an order of magnitude lower than BPA (BPA > BPF > BPS)...
November 13, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/29145067/role-of-thalamic-ventral-posterolateral-nucleus-histamine-h2-and-opiate-receptors-in-modulation-of-formalin-induced-muscle-pain-in-rats
#11
Hamid Ghasemi, Esmaeal Tamaddonfard, Farhad Soltanalinejad
BACKGROUND: Histamine and opiate systems contribute to supraspinal processing of pain. In the present study, we investigated the effects of microinjection of histamine and agonists and antagonists of histamine H2 and opiate receptors into the thalamic ventral posterolateral nucleus on muscle pain in rats. METHODS: The thalamic ventral posterolateral nuclei were bilaterally implanted with two guide cannulas. Muscle pain was induced by intramuscular injection of a diluted formalin solution (2...
May 8, 2017: Pharmacological Reports: PR
https://www.readbyqxmd.com/read/29142492/early-changes-in-platelet-size-and-number-in-patients-with-acute-coronary-syndrome
#12
Zora Sušilović Grabovac, Darija Baković, Mislav Lozo, Irena Pintarić, Željko Dujić
A strong relationship exists between acute coronary syndrome (ACS) and platelets (PLTs) volume. Mean platelet volume (MPV) is a parameter of PLT functions and a marker for increased PLT activation. The aim of this study was to determine early changes in number of total PLT and MPV in different manifestation of ACS and to find out predictive value of MPV in the spectrum of ACS. This was a prospective study. One hundred thirty-four ACS patients were enrolled, 76 of them finished the study. PLT and MPV in patients with unstable angina, non-ST elevation, and ST elevation myocardial infarctions were determined on arrival and 1, 3, 72 hours, and 7 days after the admission to hospital...
December 2017: International Journal of Angiology: Official Publication of the International College of Angiology, Inc
https://www.readbyqxmd.com/read/29137657/p53-aberrations-in-low-grade-endometrioid-carcinoma-of-the-endometrium-with-nodal-metastases-possible-insights-on-pathogenesis-discerned-from-immunohistochemistry
#13
Oluwole Fadare, Vinita Parkash
BACKGROUND: TP53 mutations are rarely identified in low grade endometrioid carcinoma of the endometrium, and their pathogenic significance in such tumors is evidenced by the fact that TP53 aberrations have been associated with reduced recurrence-free survival in this subset of tumors. However, TP53 aberrations may not always represent a driving molecular event in a given endometrial cancer with a mutation. In this case study, the immunophenotype of a distinctive low grade endometrioid adenocarcinoma with an unusual pattern of lymph node metastases is used to explore the possible roles for underlying TP53-related molecular events in its pathogenesis...
November 14, 2017: Diagnostic Pathology
https://www.readbyqxmd.com/read/29135517/myb-translocation-status-in-salivary-gland-epithelial-myoepithelial-carcinoma-evaluation-of-classic-variant-and-hybrid-forms
#14
Justin A Bishop, William H Westra
Epithelial-myoepithelial carcinoma (EMC) is a malignant salivary gland neoplasm comprised of a biphasic arrangement of inner luminal ductal cells and outer myoepithelial cells. Adenoid cystic carcinoma (AdCC) is also a biphasic tumor comprised of ductal and myoepithelial cells, but these components tend to be arranged in a more cribriform pattern. The occurrence of "hybrid carcinomas" that show mixed patterns of EMC and AdCC raises questions about the relationship of these morphologically overlapping but clinically distinct tumors...
November 9, 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/29133484/loss-of-e-cadherin-provides-tolerance-to-centrosome-amplification-in-epithelial-cancer-cells
#15
Alexander D Rhys, Pedro Monteiro, Christopher Smith, Malti Vaghela, Teresa Arnandis, Takuya Kato, Birgit Leitinger, Erik Sahai, Andrew McAinsh, Guillaume Charras, Susana A Godinho
Centrosome amplification is a common feature of human tumors. To survive, cancer cells cluster extra centrosomes during mitosis, avoiding the detrimental effects of multipolar divisions. However, it is unclear whether clustering requires adaptation or is inherent to all cells. Here, we show that cells have varied abilities to cluster extra centrosomes. Epithelial cells are innately inefficient at clustering even in the presence of HSET/KIFC1, which is essential but not sufficient to promote clustering. The presence of E-cadherin decreases cortical contractility during mitosis through a signaling cascade leading to multipolar divisions, and its knockout promotes clustering and survival of cells with multiple centrosomes...
November 13, 2017: Journal of Cell Biology
https://www.readbyqxmd.com/read/29133226/the-effect-of-dietary-neonicotinoid-pesticides-on-non-flight-thermogenesis-in-worker-bumble-bees-bombus-terrestris
#16
Robert Potts, Rebecca M Clarke, Sophie E Oldfield, Lisa K Wood, Natalie Hempel de Ibarra, James E Cresswell
For bumble bees (genus Bombus), the capacity for non-flight thermogenesis is essential for two fundamental processes undertaken by adult workers, namely recovery from torpor after chilling and brood incubation. Farmland bees can be widely exposed to dietary residues of neurotoxic neonicotinoid insecticides that appear in the nectar and pollen of treated bee-attractive crops, which may harm them. An earlier study shows that dietary neonicotinoids cause complex alterations to thermoregulation in honey bees, but their effects on the thermogenic capabilities of individual bumble bees has been untested previously...
November 10, 2017: Journal of Insect Physiology
https://www.readbyqxmd.com/read/29131473/production-of-hydroxynitrile-lyase-from-d-tyermanii-dthnl-in-komagataella-phaffii-and-its-immobilization-as-clea-to-generate-a-robust-biocatalyst
#17
Elisa Lanfranchi, Birgit Grill, Zainab Raghoebar, Sander van Pelt, Roger Sheldon, Kerstin Steiner, Anton Glieder, Margit Winkler
Hydroxynitrile lyase from the white rabbit's foot fern Davallia tyermanii (DtHNL) catalyzes the enantioselective synthesis of α-cyanohydrins, key building blocks for pharmaceutical and agrochemical industries. An efficient and competitive process necessitates the availability and robustness of the biocatalyst. Herein, the recombinant production of DtHNL1 in Komagataella phaffii is described, yielding approximately 900,000 U/L. DtHNL1 constitutes approximately 80% of the total protein content. The crude enzyme was immobilized...
November 13, 2017: Chembiochem: a European Journal of Chemical Biology
https://www.readbyqxmd.com/read/29131426/heterogeneous-acid-catalyzed-racemization-of-tertiary-alcohols
#18
Jan-E Bäckvall, Tamas Gorbe, Richard Lihammar
Tertiary alcohols are important structural motifs in natural products and building blocks in organic synthesis but only few methods are known for their enantioselective preparation. Chiral resolution is one of these approaches which leaves one enantiomer (50% of the material) unaffected. An attractive method to increase the efficiency of those resolutions is to racemize the unaffected enantiomer. In the present work we have developed a practical racemization protocol for tertiary alcohols. Five different acidic resin materials were tested...
November 12, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/29131412/oxidation-of-polynuclear-aromatic-hydrocarbons-using-ruthenium-ion-catalyzed-oxidation-the-role-of-aromatic-ring-number-in-reaction-kinetics-and-product-distribution
#19
Stuart H Taylor, Ewa Nowicka, Tomos Clarke, Meenakshisundaram Sankar, Robert Jenkins, David Knight, Stanislaw Golunski, Graham Hutchings, David Willock, Manuel Francisco
Oxidation of aromatic hydrocarbons with differing numbers of fused aromatic rings (2-5), have been studied in two solvents environments (monophasic and biphasic) using ruthenium ion catalyzed oxidation (RICO). RICO reduces the aromaticity of the polyaromatic core of the molecule in a controlled manner by selective oxidative ring opening. Moreover, the nature of the solvent system determines the product type and distribution, for molecules with more than 2 aromatic rings. Competitive oxidation between substrates with different numbers of aromatic rings has been studied in detail...
November 13, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/29131352/grik1-and-gabra2-variants-have-distinct-effects-on-the-dose-related-subjective-response-to-intravenous-alcohol-in-healthy-social-drinkers
#20
Bao-Zhu Yang, Albert J Arias, Richard Feinn, John H Krystal, Joel Gelernter, Ismene L Petrakis
BACKGROUND: The heritable risk for alcohol use disorder (AUD) is expressed partly through alterations in subjective alcohol response. In this study, we investigated the effects of 2 AUD-risk-associated single nucleotide polymorphisms, GABRA2 rs279858 and GRIK1 rs2832407, on the subjective response to alcohol administered intravenously to healthy social drinkers in a laboratory setting. METHODS: In total, 93 self-identified European American social drinkers underwent 3 blinded laboratory sessions in which they received intravenous infusions of ethanol at 3 target blood alcohol levels (0...
November 13, 2017: Alcoholism, Clinical and Experimental Research
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