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https://www.readbyqxmd.com/read/29352755/a-mos1-transposase-in-vivo-assay-to-screen-new-hiv-1-integrase-inhibitors
#1
Mariana Cancian, Elgion L S Loreto
The integrase and transposase enzymes of retrovirus and transposons, respectively, share the catalytic DDE domain. In vitro assays showed that inhibitors of HIV-1 integrase generally inhibit the mariner Mos1 transposase. Using a Drosophila strain in which the mobilisation of the mariner element can be quantified by mosaic eyes, we showed that flies maintained in medium containing 210 µM to 4 mM of raltegravir, or 1 or 2 mM of dolutegravir, which are HIV-1 integrase inhibitor used in AIDS treatment, have 23-33% less somatic mobilisation in mosaic eyes when treated with raltegravir and 28-32% when treated with dolutegravir...
January 19, 2018: Genetica
https://www.readbyqxmd.com/read/29352754/providing-ethical-healthcare-in-resource-poor-environments
#2
Kenneth V Iserson
The ethics of providing health care in resource-poor environments is a complex topic. It implies two related questions: What can we do with the resources on hand? Of all the things we can do, which ones should we do? "Resource-poor" (i.e., resource-challenged, resource-constrained) environments are situations in which clinicians, organizations, or healthcare systems have the knowledge and skills, but not the means, to carry out highly effective and beneficial interventions. Determinants of a population's health often rely less on disease and injury management than on recognizing and meeting their basic needs...
January 19, 2018: HEC Forum: An Interdisciplinary Journal on Hospitals' Ethical and Legal Issues
https://www.readbyqxmd.com/read/29352733/localization-of-palmitoylated-and-activated-g-protein-%C3%AE-subunit-in-dictyostelium-discoideum
#3
Sarah Alamer, Yusuke Kageyama, Robert E Gundersen
Guanine nucleotide-binding proteins (G proteins) act as molecular switches to regulate many fundamental cellular processes. The lipid modification, palmitoylation, can be considered as a key factor for proper G protein function and plasma membrane localization. In Dictyostelium discoidum, Gα2 is essential for the chemotactic response to cAMP in their developmental life cycle. However, the regulation of Gα2 with respect to palmitoylation, activation and Gβγ association is less clear. In this study, Gα2 is shown to be palmitoylated on Cys-4 by [3 H]palmitate labeling...
January 20, 2018: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29352723/which-hiv-infected-adults-with-high-cd4-t-cell-counts-benefit-most-from-immediate-initiation-of-antiretroviral-therapy-a-post-hoc-subgroup-analysis-of-the-start-trial
#4
Jean-Michel Molina, Birgit Grund, Fred Gordin, Ian Williams, Mauro Schechter, Marcello Losso, Matthew Law, Ernest Ekong, Noluthando Mwelase, Athanasios Skoutelis, Martin J Wiselka, Linos Vandekerckhove, Thomas Benfield, David Munroe, Jens D Lundgren, James D Neaton
BACKGROUND: Immediate initiation of antiretroviral therapy (ART) in asymptomatic adults with CD4 counts higher than 500 cells per μL, as recommended, might not always be possible in resource-limited settings. We aimed to identify subgroups of individuals who would benefit most from immediate treatment. METHODS: The START trial was a randomised controlled trial in asymptomatic, HIV-positive adults previously untreated with ART. Participants with CD4 counts higher than 500 cells per μL were randomly assigned to receive immediate ART or to defer ART until CD4 counts were lower than 350 cells per μL...
January 15, 2018: Lancet HIV
https://www.readbyqxmd.com/read/29352717/should-we-use-cell-of-origin-and-dual-protein-expression-in-treating-dlbcl
#5
REVIEW
Peter A Riedell, Sonali M Smith
Treatment outcomes in diffuse large B-cell lymphoma (DLBCL) following standard R-CHOP (rituximab, cyclophosphamide, doxorubicin, vincristine, and prednisone) therapy is highly variable and dependent on a number of clinical, biologic, and genetic features. The identification of molecular heterogeneity via gene expression profiling dichotomizes patients based on the cell of origin (COO) model into germinal center B-cell-like (GCB) and activated B-cell-like (ABC) subsets, with ABC-DLBCL having a worse outcome...
December 24, 2017: Clinical Lymphoma, Myeloma & Leukemia
https://www.readbyqxmd.com/read/29352710/changes-in-hepg2-spheroid-behavior-induced-by-differences-in-the-gap-distance-between-spheroids-in-a-micropatterned-culture-system
#6
Daisuke Miyamoto, Takuya Hara, Ai Hyakutake, Kohji Nakazawa
Micropatterning is a promising technique for modulating culture environments. In this study, we investigated the effect of spheroid separation distance on their properties in a micropatterned chip of HepG2 spheroids. The basic chip design consisted of 37 collagen spots (300 μm in diameter) in a hexagonal arrangement on a glass substrate; the region without collagen-spots was modified by polyethylene glycol to create the non-adhesive surface. Three similar chips were fabricated with gap distances between collagen-spots of 500, 1000, and 1500 μm...
January 15, 2018: Journal of Bioscience and Bioengineering
https://www.readbyqxmd.com/read/29352679/inter-sexual-habitat-and-isotopic-niche-segregation-of-the-endangered-monteiro-s-storm-petrel-during-breeding
#7
V H Paiva, J A Ramos, C Nava, V Neves, J Bried, M Magalhães
At-sea distribution and trophic ecology of small seabird species (i.e.<100 g) is far less known when compared to their larger relatives. We studied the habitat use (spatial ecology) and isotopic niches (trophic ecology) of the endangered Monteiro's storm-petrel Hydrobates monteiroi during the incubation and chick-rearing periods of 2013. There was a sexual foraging segregation of Monteiro's storm-petrels during the breeding period (tracking data) but also during the non-breeding stage (stable isotope analysis)...
December 30, 2017: Zoology: Analysis of Complex Systems, ZACS
https://www.readbyqxmd.com/read/29352675/impact-of-intestinal-mannitol-on-hyperammonemia-oxidative-stress-and-severity-of-hepatic-encephalopathy-in-the-ed
#8
Daniel H Montes-Cortés, José L Novelo-Del Valle, Ivonne M Olivares-Corichi, José V Rosas-Barrientos, Luis J Jara, María Pilar Cruz-Domínguez
Hyperammonemia results from hepatic inability to remove nitrogenous products generated by protein metabolism of intestinal microbiota, which leads to hepatic encephalopathy (HE) in chronic liver disease (CLD). In ammonium neurotoxicity, oxidative stress (OxS) plays a pathogenic role. Our objective was to evaluate if intestinal mannitol is as effective and safe as conventional treatment for diminishing hyperammonemia, OxS, and HE in patients with CLD. MATERIAL AND METHODS: We included 30 patients with HE classified by "Haven Criteria for Hepatic Encephalopathy"...
January 10, 2018: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/29352665/complementary-and-alternative-medicine-cam-practices-and-dietary-patterns-in-children-with-inflammatory-bowel-disease-in-singapore-and-malaysia
#9
Fangyi Ong, Way Seah Lee, Charlotte Lin, Ruey Terng Ng, Shin Yee Wong, Su Lin Lim, Seng Hock Quak, Marion Aw
BACKGROUND: The use of complementary and alternative medicine (CAM) has been associated with adverse effects and self-imposed dietary restrictions. The prevalence of its use in Asian children with inflammatory bowel disease (IBD) is unknown. We aimed to determine the prevalence, types, and factors associated with the use of CAM among children with IBD from Singapore and Malaysia, and to ascertain if dietary restriction was prevalent in patients who used CAM. METHODS: A cross-sectional study was conducted in which parents of children with IBD attending two tertiary pediatric IBD referral centres in Singapore and Malaysia were interviewed...
December 26, 2017: Pediatrics and Neonatology
https://www.readbyqxmd.com/read/29352649/optimal-use-of-peri-operative-human-chorionic-gonadotrophin-concentrations-to-identify-persistent-ectopic-pregnancy-after-laparoscopic-salpingostomy-a-retrospective-cohort-study
#10
Abraham N Morse, Wenyue Si, Shuang Qin, Huiying Liang
The aim of this study was to improve clinical decision-making for the identification of persistent ectopic pregnancy after linear salpingostomy. The study identified 854 laparoscopic salpingostomies performed between 2011 and 2016; 794 had a human chorionic gonadotrophin (HCG) <10 mIU/ml documented in the electronic medical record within 1 month after surgery ('successes'). Sixty (7%) received either methotrexate or repeat surgery for persistent ectopic pregnancy ('failures'). Five hundred and seventeen, including 46 'failures', had two or more immediate post-operative HCG measurements available...
December 28, 2017: Reproductive Biomedicine Online
https://www.readbyqxmd.com/read/29352598/who-consultation-on-etec-and-shigella-burden-of-disease-geneva-6-7th-april-2017-meeting-report
#11
Divya Hosangadi, Peter G Smith, David C Kaslow, Birgitte K Giersing
According to the 2015 Global Burden of Disease Study, diarrhea ranked ninth among causes of death for all ages, and fourth among children under 5 years old, accounting for an estimated 499,000 deaths in this young age group. It was also the second most common cause of years lived with disability (2.39 billion YLDs). The goal of the WHO/UNICEF Integrated Global Action Plan for the Prevention and Control of Pneumonia and Diarrhea (GAPPD) is to reduce deaths from diarrhea in children under 5 years of age to less than 1 per 1000 live births, by 2025...
January 15, 2018: Vaccine
https://www.readbyqxmd.com/read/29352582/a-microfluidic-distributor-combining-minimal-volume-minimal-dispersion-and-minimal-sensitivity-to-clogging
#12
Sander Jespers, Sander Deridder, Gert Desmet
A new type of microfluidic flow distributor (referred to as the mixed mode or MM-distributor) is proposed. Its performance characteristics are determined using computational fluid dynamics (CFD), both in the absence and the presence of clogging, which is an important problem in microfluidic systems. A comparison is made with two existing, well-performing distributor types: the bifurcating (BF) distributor and an optimized diverging distributor, the so-called radially interconnected (RI) distributor. It was found that, in the absence of clogging, the MM-distributor produces only a little more dispersion than the bifurcating (BF) distributor, but much less than the radially interconnected (RI) distributor...
January 12, 2018: Journal of Chromatography. A
https://www.readbyqxmd.com/read/29352530/psychotherapies-for-depression-in-low-and-middle-income-countries-a-meta-analysis
#13
Pim Cuijpers, Eirini Karyotaki, Mirjam Reijnders, Marianna Purgato, Corrado Barbui
Most psychotherapies for depression have been developed in high-income Western countries of North America, Europe and Australia. A growing number of randomized trials have examined the effects of these treatments in non-Western countries. We conducted a meta-analysis of these studies to examine whether these psychotherapies are effective and to compare their effects between studies from Western and non-Western countries. We conducted systematic searches in bibliographical databases and included 253 randomized controlled trials, of which 32 were conducted in non-Western countries...
February 2018: World Psychiatry: Official Journal of the World Psychiatric Association (WPA)
https://www.readbyqxmd.com/read/29352525/an-mrm-based-cytokeratin-marker-assay-as-a-tool-for-cancer-studies-application-to-lung-cancer-pleural-effusions
#14
Anna Perzanowska, Agnieszka Fatalska, Grzegorz Wojtas, Andrzej Lewandowicz, Agata Michalak, Grzegorz Krasowski, Christoph H Borchers, Michal Dadlez, Dominik Domanski
PURPOSE: The goal of this work was to develop an LC-MRM assay for the quantitative analysis of a set of established and diagnostically important cytokeratin (CK) markers used in cancer diagnosis, prognosis and therapy monitoring. Secondly, the potential of this assay in lung cancer diagnosis through pleural effusion (PE) analysis was examined. EXPERIMENTAL DESIGN: A multiplexed MRM assay was developed for 17 CKs and their select caspase-cleaved fragments. Isotope-labeled standard peptides were used for high assay specificity and absolute peptide quantitation; with robust standard-flow LC coupled to a latest-generation triple-quadrupole instrument for high sensitivity...
January 19, 2018: Proteomics. Clinical Applications
https://www.readbyqxmd.com/read/29352503/in-vivo-effects-of-%C3%AE-opioid-receptor-agonist-%C3%AE-opioid-receptor-antagonist-peptidomimetics-following-acute-and-repeated-administration
#15
Jessica P Anand, Kelsey E Kochan, Anthony F Nastase, Deanna Montgomery, Nicholas W Griggs, John R Traynor, Henry I Mosberg, Emily M Jutkiewicz
BACKGROUND AND PURPOSE: Mu opioid receptor (μ-receptor) agonists are used for pain management, but produce adverse effects including tolerance, dependence, and euphoria. The co-administration of a μ-receptor agonist with a delta opioid receptor (δ-receptor) antagonist has been shown to produce antinociception with reduced development of some side effects. We characterized the effects of three μ-receptor agonist/δ-receptor antagonist peptidomimetics in vivo after acute and repeated administration to determine if this profile provides a viable alternative to traditional opioid analgesics...
January 19, 2018: British Journal of Pharmacology
https://www.readbyqxmd.com/read/29352470/a-laser-optical-method-for-predicting-adulteration-of-clover-honey-bee
#16
A E El-Raie, H E Hassan, A A Abd El-Rahman, R A Shaimaa
The authenticity of honey is great importance for commercial and health reasons. Adulteration of honey bee with cheaper sweetening materials has been used. The objectives of this study were: 1) To evaluate the quality of honey bee according to physicochemical characteristics, 2) To estimate the transmission property of prediction of honey using visible laser technique, and 3) Possibility of adulteration of honey bee according to high transmission intensity of laser beam through Clover honey bee. Helium-neon (He-Ne) laser in the visible light with wavelengths 632...
January 20, 2018: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/29352469/amoxicillin-current-use-in-swine-medicine
#17
REVIEW
D G S Burch, D Sperling
Amoxicillin has become a major antimicrobial substance in pig medicine for the treatment and control of severe, systemic infections such as Streptococcus suis. The minimum inhibitory concentration 90% (MIC 90) is 0.06 μg amoxicillin/ml, and the proposed epidemiological cut-off value (ECOFF) is 0.5 μg/ml, giving only 0.7% of isolates above the ECOFF or of reduced susceptibility. Clinical breakpoints have not been set for amoxicillin against porcine pathogens yet, hence the use of ECOFFs. It has also been successfully used for bacterial respiratory infections caused by Actinobacillus pleuropneumoniae and Pasteurella multocida...
January 19, 2018: Journal of Veterinary Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/29352468/developmental-plasticity-of-gabaergic-neurotransmission-to-brainstem-motoneurons
#18
Lila Buls Wollman, Richard B Levine, Ralph F Fregosi
Nicotinic acetylcholine receptor (nAChR) signalling regulates neuronal differentiation and synaptogenesis. Here we test the hypothesis that developmental nicotine exposure (DNE) disrupts the development of GABAergic synaptic transmission to hypoglossal motoneurons (XIIMNs). GABAergic spontaneous and miniature inhibitory postsynaptic currents (sIPSC/mIPSC) were recorded from XIIMNs in brainstem slices from control and DNE rat pups of either sex, 1-5 days old, at baseline and following acute stimulation of nAChRs with nicotine...
January 20, 2018: Journal of Physiology
https://www.readbyqxmd.com/read/29352467/systematic-misclassification-of-gestational-age-by-ultrasound-biometry-implications-for-clinical-practice-and-research-methodology-in-the-nordic-countries
#19
Alkistis Skalkidou, Merit Kullinger, Marios K Georgakis, Helle Kieler, Ulrik S Kesmodel
Historically, pregnancy dating has been based on self-reported information on first day of the last menstrual period. In the 1970s, ultrasound biometry was introduced as an alternative for pregnancy dating, and is now the leading method in Nordic countries. The use of ultrasound led to a reduction of postterm births and fewer inductions and is considered more precise than last menstrual period-based methods for pregnancy dating. Nevertheless, differences in early growth and specific situations, such as maternal obesity, can render its estimates less precise, leading to gestational age misclassification...
January 20, 2018: Acta Obstetricia et Gynecologica Scandinavica
https://www.readbyqxmd.com/read/29352463/temperature-dependency-of-intraguild-predation-between-native-and-invasive-crabs
#20
Tanya L Rogers, Tarik C Gouhier, David L Kimbro
Environmental factors such as temperature can affect the geographical distribution of species directly by exceeding physiological tolerances, or indirectly by altering physiological rates that dictate the sign and strength of species interactions. Although the direct effects of environmental conditions are relatively well studied, the effects of environmentally-mediated species interactions have garnered less attention. In this study, we examined the temperature-dependency of size-structured intraguild predation (IGP) between native blue crabs (Callinectes sapidus, the IG predator) and invasive green crabs (Carcinus maenas, the IG prey) to evaluate how the effect of temperature on competitive and predatory rates may influence the latitudinal distribution of these species...
January 20, 2018: Ecology
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