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https://www.readbyqxmd.com/read/29782315/tlr4-gene-expression-and-pro-inflammatory-cytokines-in-alzheimer-s-disease-and-in-response-to-hippocampal-deafferentation-in-rodents
#1
Justin Miron, Cynthia Picard, Josée Frappier, Doris Dea, Louise Théroux, Judes Poirier
One important aspect in Alzheimer's disease pathology is the presence of chronic inflammation. Considering its role as a key receptor in the microglial innate immune system, TLR4 was shown to regulate the binding and phagocytosis of amyloid plaques by microglia in several mouse models of amyloidosis, as well as the production of pro-inflammatory cytokines. To our knowledge, TLR4 and its association with cytokines have not been thoroughly examined in the brains of subjects affected with Alzheimer's disease. Using quantitative reverse transcription polymerase chain reaction (qRT-PCR) in postmortem human brains, we observed increased expression for the TLR4 and TNF genes (p = 0...
May 16, 2018: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/29778149/effect-of-temperature-tuning-on-the-aerosol-acoustic-aggregation-process
#2
Zhenghui Qiao, Wei Dong, Yaji Huang, Vincenzo Naso
Diesel exhaust aerosols (DEAs) can absorb and accumulate toxic metal particulates and bacteria suspended in the atmospheric environment, which impact human health and the environment. The use of acoustic standing waves (ASWs) to aggregate DEA is currently considered to be an efficient particle removal method; however, study of the effect of different temperatures on the acoustic aggregation process is scarce. To explore the method and technology to regulate and optimize the aerosol aggregation process through temperature tuning, an acoustic apparatus integrated with a temperature regulation function was constructed...
May 2018: Journal of Environmental Sciences (China)
https://www.readbyqxmd.com/read/29776902/an-internet-based-radiology-course-in-medical-school-comparison-of-academic-performance-of-students-on-campus-versus-those-with-absenteeism-due-to-residency-interviews
#3
Andrew George Alexander, Deborah Deas, Paul Eric Lyons
BACKGROUND: Imaging and its optimal use are imperative to the practice of medicine, yet many students don't receive a formal education in radiology. Concurrently, students look for ways to take time away from medical school for residency interviewing. Web-based instruction provides an opportunity to combine these imperatives using online modalities. OBJECTIVE: A largely Web-based course in radiology during the 4th year of medical school was evaluated both for its acceptance to students who needed to be away from campus for interviews, and its effectiveness on a nationally administered standardized test...
May 18, 2018: JMIR Medical Education
https://www.readbyqxmd.com/read/29773582/activation-of-large-conductance-calcium-activated-k-channels-by-nitric-oxide-mediates-apelin-induced-relaxation-of-coronary-arteries
#4
Amreen Mughal, Chengwen Sun, Stephen T O'Rourke
Apelin increases coronary blood flow, cardiac contractility and cardiac output. Based on these favorable hemodynamic effects, apelin and apelin-like analogs are being developed for treating heart failure and related disorders; however, the molecular mechanisms underlying apelin-induced coronary vasodilation are unknown. This study aimed to elucidate the signaling pathways by which apelin causes smooth muscle relaxation in coronary arteries. Receptors for apelin (APJ receptors) were expressed in coronary arteries, as determined by Western blot and PCR analyses...
May 17, 2018: Journal of Pharmacology and Experimental Therapeutics
https://www.readbyqxmd.com/read/29762040/orally-bioavailable-and-effective-buparvaquone-lipid-based-nanomedicines-for-visceral-leishmaniasis
#5
Lindsay A Smith, Dolores Remedios Serrano, Marion Mauger, Francisco Bolás-Fernández, Maria Auxiliadora Dea-Ayuela, Aikaterini Lalatsa
Nano-enabled lipid based drug delivery systems offer a platform to overcome challenges encountered with current failed leads in the treatment of parasitic and infectious diseases. When prepared with FDA or EMA approved excipients, they can be readily translated without the need for further toxicological studies, while they remain affordable and amenable to scale-up. Buparvaquone (BPQ), a hydroxynapthoquinone with in vitro activity in the nanomolar range, failed to clinically translate as a viable treatment for visceral leishmaniasis due to its poor oral bioavailability limited by its poor aqueous solubility (BCS Class II drug)...
May 15, 2018: Molecular Pharmaceutics
https://www.readbyqxmd.com/read/29760449/aurora-kinase-a-aurka-interaction-with-wnt-and-ras-mapk-signalling-pathways-in-colorectal-cancer
#6
Annika Jacobsen, Linda J W Bosch, Sanne R Martens-de Kemp, Beatriz Carvalho, Anke H Sillars-Hardebol, Richard J Dobson, Emanuele de Rinaldis, Gerrit A Meijer, Sanne Abeln, Jaap Heringa, Remond J A Fijneman, K Anton Feenstra
Hyperactivation of Wnt and Ras-MAPK signalling are common events in development of colorectal adenomas. Further progression from adenoma-to-carcinoma is frequently associated with 20q gain and overexpression of Aurora kinase A (AURKA). Interestingly, AURKA has been shown to further enhance Wnt and Ras-MAPK signalling. However, the molecular details of these interactions in driving colorectal carcinogenesis remain poorly understood. Here we first performed differential expression analysis (DEA) of AURKA knockdown in two colorectal cancer (CRC) cell lines with 20q gain and AURKA overexpression...
May 14, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29759182/development-of-a-new-analytical-tool-for-assessing-the-mutagen-2-methyl-1-4-dinitro-pyrrole-in-meat-products-by-lc-esi-ms-ms
#7
Luciano Molognoni, Heitor Daguer, Leandro Antunes de Sá Ploêncio, Suzana Eri Yotsuyanagi, Ana Lucia da Silva Correa Lemos, Antonio Carlos Joussef, Juliano De Dea Lindner
The use of sorbate and nitrite in meat processing may lead to the formation of 2-methyl-1,4-dinitro-pyrrole (DNMP), a mutagenic compound. This work was aimed at developing and validating an analytical method for the quantitation of DNMP by liquid chromatography-tandem mass spectrometry. Full validation was performed in accordance to Commission Decision 2002/657/EC and method applicability was checked in several samples of meat products. A simple procedure, with low temperature partitioning solid-liquid extraction, was developed...
August 1, 2018: Talanta
https://www.readbyqxmd.com/read/29750250/analysis-of-fentanyl-and-18-novel-fentanyl-analogs-and-metabolites-by-lc-ms-ms-and-report-of-fatalities-associated-with-methoxyacetylfentanyl-and-cyclopropylfentanyl
#8
Melissa F Fogarty, Donna M Papsun, Barry K Logan
Methoxyacetylfentanyl and cyclopropylfentanyl are two of the newest illicit opioids that are infiltrating the heroin market. Methoxyacetylfentanyl and cyclopropylfentanyl were reported by the Drug Enforcement Administration (DEA) in their third quarter report of 2017 to have been chemically identified seven and five times, respectively, from drug evidence analyzed by the DEA's lab system; Q3 was the first time cyclopropylfentanyl was identified by the DEA's lab system, while methoxyacetylfentanyl was reported one time in Q2 2017...
May 10, 2018: Journal of Analytical Toxicology
https://www.readbyqxmd.com/read/29748853/systematic-search-for-benzimidazole-compounds-and-derivatives-with-antileishmanial-effects
#9
Juan Carlos Sánchez-Salgado, Pablo Bilbao-Ramos, María Auxiliadora Dea-Ayuela, Francisco Hernández-Luis, Francisco Bolás-Fernández, José L Medina-Franco, Yareli Rojas-Aguirre
Leishmaniasis is a neglected tropical disease that currently affects 12 million people, and over 1 billion people are at risk of infection. Current chemotherapeutic approaches used to treat this disease are unsatisfactory, and the limitations of these drugs highlight the necessity to develop treatments with improved efficacy and safety. To inform the rational design and development of more efficient therapies, the present study reports a chemoinformatic approach using the ChEMBL database to retrieve benzimidazole as a target scaffold...
May 10, 2018: Molecular Diversity
https://www.readbyqxmd.com/read/29747473/supercritical-fluid-chromatography-with-photodiode-array-detection-in-the-determination-of-fat-soluble-vitamins-in-hemp-seed-oil-and-waste-fish-oil
#10
Katarzyna Tyśkiewicz, Roman Gieysztor, Izabela Maziarczyk, Paweł Hodurek, Edward Rój, Krystyna Skalicka-Woźniak
In the presented study for the first time a new, optimized, fast SFC (supercritical fluid chromatography) method was applied to separate in one run fat-soluble vitamins from waste fish oil, including cis -and tran s-retinyl palmitate, cis - and trans -retinyl acetate, retinol, α-tocopherol, β-tocopherol, γ‑tocopherol, δ-tocopherol, ergocalciferol (D₂), cholecalciferol (D₃), cis - and trans -phylloquinone (K₁) and menaquinone-4 (K₂-MK4). Vitamins were baseline separated on an Acquity UPC² (ultra performance convergence chromatography) HSS C18 SB (highly strength chemically modified silica) column within 13 min...
May 10, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29725922/an-assessment-of-energy-efficiency-based-on-environmental-constraints-and-its-influencing-factors-in-china
#11
Yao Chen, Jing-Ting Xu
The super-efficiency directional distance function (DDF) with data envelopment analysis (DEA) model (SEDDF-DEA) is more facilitative than to increase traditional method as a rise of energy efficiency in China, which is currently important energy development from Asia-pacific region countries. SEDDF-DEA is promoted as sustained total-factor energy efficiency (TFEE), value added outputs, and Malmquist-Luenberger productivity index (MLPI) to otherwise thorny environmental energy productivity problems with environmental constraint to concrete the means of regression model...
May 3, 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29722754/assessment-selection-use-and-evaluation-of-body-worn-absorbent-products-for-adults-with-incontinence-a-wocn-society-consensus-conference
#12
Mikel Gray, Dea Kent, JoAnn Ermer-Seltun, Laurie McNichol
The Wound, Ostomy and Continence Nurses (WOCN) Society charged a task force with creating recommendations for assessment, selection, use, and evaluation of body-worn absorbent products. The 3-member task force, assisted by a moderator with knowledge of this area of care, completed a scoping literature review to identify recommendations supported by adequate research to qualify as evidence-based, and area of care where evidence needed to guide care was missing. Based on findings of this scoping review, the Society then convened a panel of experts to develop consensus statements guiding assessment, use, and evaluation of the effect of body-worn absorbent products for adults with urinary and/or fecal incontinence...
May 2018: Journal of Wound, Ostomy, and Continence Nursing
https://www.readbyqxmd.com/read/29721236/determinants-of-problematic-internet-use-and-its-association-with-disordered-eating-attitudes-among-minia-university-students
#13
Nashwa Nabil Kamal, Nashaat Nabil Kamal
Background: To determine the association between problematic Internet use (PIU) and disordered eating attitudes (DEAs) and to detect the potential risk factors for PIU among University students in Minia, Egypt. Methods: A cross-sectional study was carried out among a random sample ( n = 2365) of Minia University students. PIU was assessed using The Problematic Internet Use Scale (PIUS), and the DEAs were assessed using eating attitudes test-26 questionnaire. Results: Of the 2365 students, 424 (17...
2018: International Journal of Preventive Medicine
https://www.readbyqxmd.com/read/29720942/glutathione-s-transferase-p1-protects-against-amodiaquine-quinoneimines-induced-cytotoxicity-but-does-not-prevent-activation-of-endoplasmic-reticulum-stress-in-hepg2-cells
#14
Yongjie Zhang, Shalenie P den Braver-Sewradj, Michiel W den Braver, Steven Hiemstra, Nico P E Vermeulen, Bob van de Water, Jan N M Commandeur, J C Vos
Formation of the reactive amodiaquine quinoneimine (AQ-QI) and N -desethylamodiaquine quinoneimine (DEAQ-QI) plays an important role in the toxicity of the anti-malaria drug amodiaquine (AQ). Glutathione conjugation protects against AQ-induced toxicity and GSTP1 is able to conjugate its quinoneimine metabolites AQ-QI and DEA-QI with glutathione. In this study, HepG2 cells transiently transfected with the human GSTP1 construct were utilized to investigate the protective effect of GSTP1 in a cellular context...
2018: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/29720299/effects-of-denosumab-after-treatment-discontinuation-a-review-of-the-literature
#15
Maryam Iranikhah, Crystal Deas, Pilar Murphy, Maisha Kelly Freeman
OBJECTIVE: To review and summarize studies on the effects of denosumab on bone mineral density following the discontinuation of therapy. DATA SOURCES: A search of PubMed (1966-July 2017) and International Pharmaceutical Abstracts (1970-July 2017) was conducted using the Medical Subject Headings (MeSH) terms denosumab, osteoporosis, and withholding treatment in combination with free term searches including the words drug holiday, discontinue, discontin*, and drug discontinuation...
March 1, 2018: Consultant Pharmacist: the Journal of the American Society of Consultant Pharmacists
https://www.readbyqxmd.com/read/29710059/tolerability-and-product-properties-of-a-gum-containing-thickener-in-patients-with-dysphagia
#16
Linda Killeen, Mirian Lansink, Dea Schröder
PURPOSE: The aim of the study was to determine the gastrointestinal (GI) tolerability of drinks and foods thickened with a gum-containing thickener compared to a starch-based thickener in patients with dysphagia. DESIGN: A randomized, double-blind, controlled, parallel group study. METHODS: Subjects started with a 3-day run-in period on a starch-based thickener and continued with a 14-day intervention on either the starch-based or gum-containing thickener...
May 2018: Rehabilitation Nursing: the Official Journal of the Association of Rehabilitation Nurses
https://www.readbyqxmd.com/read/29706064/electron-attachment-to-microhydrated-deoxycytidine-monophosphate
#17
Jaroslav Kočišek, Barbora Sedmidubská, Suvasthika Indrajith, Michal Fárník, Juraj Fedor
DNA constituents are effectively decomposed via dissociative electron attachment (DEA). However, the DEA contribution to radiation damage in living tissues is a subject of ongoing discussion. We address an essential question, how aqueous environment influences the DEA to DNA. In particular, we report experimental fragmentation patterns for DEA to microhydrated 2-deoxycytidine 5-monophosphate (dCMP). Isolated dCMP was previously set as a model to describe mechanisms of DNA strand breaks induced by secondary electrons and decomposes primarily by dissociation of the C-O phosphoester bond...
April 29, 2018: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/29701152/memorization-test-and-resting-state-eeg-components-in-mild-and-subjective-cognitive-impairment
#18
Giulia Mazzon, Federica De Dea, Tatiana Cattaruzza, Paolo Manganotti, Fabrizio Monti, Agostino Accardo
BACKGROUND: Mild (MCI) and Subjective Cognitive Impairment (SCI) are conditions at risk of developing Alzheimer's disease (AD). Differential between normal aging at early stages can be really challenging; available biomarkers need to be combined and can be quite invasive and expensive. OBJECTIVE: The aim of this pilot study is to examine possible EEG alterations in MCI and SCI compared to controls, analyzing if a cognitive task could highlight early AD hallmarks...
April 26, 2018: Current Alzheimer Research
https://www.readbyqxmd.com/read/29700473/an-analytical-framework-for-whole-genome-sequence-association-studies-and-its-implications-for-autism-spectrum-disorder
#19
Donna M Werling, Harrison Brand, Joon-Yong An, Matthew R Stone, Lingxue Zhu, Joseph T Glessner, Ryan L Collins, Shan Dong, Ryan M Layer, Eirene Markenscoff-Papadimitriou, Andrew Farrell, Grace B Schwartz, Harold Z Wang, Benjamin B Currall, Xuefang Zhao, Jeanselle Dea, Clif Duhn, Carolyn A Erdman, Michael C Gilson, Rachita Yadav, Robert E Handsaker, Seva Kashin, Lambertus Klei, Jeffrey D Mandell, Tomasz J Nowakowski, Yuwen Liu, Sirisha Pochareddy, Louw Smith, Michael F Walker, Matthew J Waterman, Xin He, Arnold R Kriegstein, John L Rubenstein, Nenad Sestan, Steven A McCarroll, Benjamin M Neale, Hilary Coon, A Jeremy Willsey, Joseph D Buxbaum, Mark J Daly, Matthew W State, Aaron R Quinlan, Gabor T Marth, Kathryn Roeder, Bernie Devlin, Michael E Talkowski, Stephan J Sanders
Genomic association studies of common or rare protein-coding variation have established robust statistical approaches to account for multiple testing. Here we present a comparable framework to evaluate rare and de novo noncoding single-nucleotide variants, insertion/deletions, and all classes of structural variation from whole-genome sequencing (WGS). Integrating genomic annotations at the level of nucleotides, genes, and regulatory regions, we define 51,801 annotation categories. Analyses of 519 autism spectrum disorder families did not identify association with any categories after correction for 4,123 effective tests...
April 26, 2018: Nature Genetics
https://www.readbyqxmd.com/read/29699870/quantitative-determination-of-major-alkaloids-in-cinchona-bark-by-supercritical-fluid-chromatography
#20
Adele Murauer, Markus Ganzera
Chinoline alkaloids found in Cinchona bark still play an important role in medicine, for example as antimalarial and antiarrhythmic drugs. For the first time Supercritical Fluid Chromatography has been utilized for their separation. Six respective derivatives (dihydroquinidine, dihydroquinine, quinidine, quinine, cinchonine and cinchonidine) could be resolved in less than 7 min, and three of them quantified in crude plant extracts. The optimum stationary phase showed to be an Acquity UPC2 Torus DEA 1.7 μm column, the mobile phase comprised of CO2 , acetonitrile, methanol and diethylamine...
April 18, 2018: Journal of Chromatography. A
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