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https://www.readbyqxmd.com/read/28526895/three-novel-xenorhabdus-steinernema-associations-and-evidence-of-strains-of-x-khoisanae-switching-between-different-clades
#1
Jonike Dreyer, Antoinette P Malan, Leon M T Dicks
Xenorhabdus species are normally closely associated with entomopathogenic nematodes of the family Steinernematidae. Strain F2, isolated from Steinernema nguyeni, was identified as Xenorhabdus bovienii and strains J194 and SB10, isolated from Steinernema jeffreyense and Steinernema sacchari as Xenorhabdus khoisanae, based on phenotypic characteristics and sequencing of 16S rRNA and housekeeping genes dnaN, gltX, gyrB, infB and recA. All three strains produced antimicrobial compounds that inhibited the growth of Gram-positive and Gram-negative bacteria...
May 19, 2017: Current Microbiology
https://www.readbyqxmd.com/read/28522728/draft-genome-sequence-of-mycobacterium-abscessus-bamboo
#2
Michelle Yee, David Klinzing, Jun-Rong Wei, Martin Gengenbacher, Eric J Rubin, Thomas Dick
Mycobacterium abscessus, an intrinsically multidrug-resistant pathogen, causes chronic incurable lung disease. New drugs for this emerging pathogen represent an urgent unmet medical need. Here, we report a draft genome sequence of M. abscessus Bamboo, a clinical isolate used as a screening strain for drug discovery.
May 18, 2017: Genome Announcements
https://www.readbyqxmd.com/read/28522083/relationships-between-potentially-traumatic-events-sleep-disturbances-and-symptoms-of-ptsd-and-alcohol-use-disorder-in-a-young-adult-sample
#3
Mackenzie J Lind, Allison Baylor, Cassie M Overstreet, Sage E Hawn, Bruce D Rybarczyk, Kenneth S Kendler, Danielle M Dick, Ananda B Amstadter
OBJECTIVE: Traumatic events, particularly those that are interpersonal in nature, are associated with increased risk for co-occurring sequelae, including sleep disturbances, posttraumatic stress disorder (PTSD), and alcohol use disorder (AUD). However, the associations between these phenotypes have not been explored among college students. METHODS: We examined relationships between type of potentially traumatic event (PTE) exposure (pre-college) and sleep disturbances, as well as mediating effects of lifetime PTSD and AUD symptoms on these relationships, in a large undergraduate sample (N = 1599, 64...
June 2017: Sleep Medicine
https://www.readbyqxmd.com/read/28521772/feasibility-and-relevance-of-compound-strain-imaging-in-non-stenotic-arteries-comparison-between-individuals-with-cardiovascular-diseases-and-healthy-controls
#4
Martijn F H Maessen, Thijs M H Eijsvogels, Ayla Grotens, Maria T E Hopman, Dick H J Thijssen, Hendrik H G Hansen
BACKGROUND: Compound strain imaging is a novel method to noninvasively evaluate arterial wall deformation which has recently shown to enable differentiation between fibrous and (fibro-)atheromatous plaques in patients with severe stenosis. We tested the hypothesis that compound strain imaging is feasible in non-stenotic arteries and provides incremental discriminative power to traditional measures of vascular health (i.e., distensibility coefficient (DC), central pulse wave velocity [cPWV], and intima-media thickness [IMT]) for differentiating between participants with and without a history of cardiovascular diseases (CVD)...
May 18, 2017: Cardiovascular Ultrasound
https://www.readbyqxmd.com/read/28519244/neonatal-abstinence-syndrome-update-on-diagnostic-and-therapeutic-strategies
#5
Genny Raffaeli, Giacomo Cavallaro, K Karel Allegaert, Enno Diederik Wildschut, Monica Fumagalli, Massimo Agosti, Dick Tibboel, Fabio Mosca
Substance use among pregnant women is a major public health issue. Both prescription opioid use and illicit opioid abuse have increased dramatically in recent years. Prolonged in utero drug exposure may result in neonatal abstinence syndrome (NAS), an acute multisystemic clinical entity that occurs in the first days of life. This syndrome is caused by abrupt discontinuation of fetal exposure to licit or illicit drugs chronically consumed by the mother during pregnancy and transmitted to the fetus through the placenta...
May 18, 2017: Pharmacotherapy
https://www.readbyqxmd.com/read/28510604/ebola-exposure-illness-experience-and-ebola-antibody-prevalence-in-international-responders-to-the-west-african-ebola-epidemic-2014-2016-a-cross-sectional-study
#6
Catherine F Houlihan, Catherine R McGowan, Steve Dicks, Marc Baguelin, David A J Moore, David Mabey, Chrissy H Roberts, Alex Kumar, Dhan Samuel, Richard Tedder, Judith R Glynn
BACKGROUND: Healthcare and other front-line workers are at particular risk of infection with Ebola virus (EBOV). Despite the large-scale deployment of international responders, few cases of Ebola virus disease have been diagnosed in this group. Since asymptomatic or pauci-symptomatic infection has been described, it is plausible that infections have occurred in healthcare workers but have escaped being diagnosed. We aimed to assess the prevalence of asymptomatic or pauci-symptomatic infection, and of exposure events, among returned responders to the West African Ebola epidemic 2014-2016...
May 2017: PLoS Medicine
https://www.readbyqxmd.com/read/28510137/possible-mechanism-of-bursting-suppression-in-nociceptive-neurons
#7
O E Dick, B V Krylov, A D Nozdrachev
The use of the mathematical model of rat nociceptive neuron membrane allowed us to predict a new mechanism of suppression of ectopic bursting discharges, which arise in neurons of dorsal root ganglia and are one of the causes of neuropathic pain. The treatment with comenic acid leads to switching off the ectopic bursting discharges due to a decrease in the effective charge transferring via the activation gating structure of the slow sodium channels (Na V1.8a). Comenic acid is a drug substance of a new non-opioid analgesic [1] Thus, this analgesic not only reduces the frequency of rhythmic discharges of nociceptive neuron membrane [2] but also it suppresses its ectopic bursting discharges...
March 2017: Doklady. Biochemistry and Biophysics
https://www.readbyqxmd.com/read/28509573/adverse-events-of-atomoxetine-in-a-double-blind-placebo-controlled-study-in-children-with-autism
#8
Rameshwari V Tumuluru, Patricia Corbett-Dick, Michael G Aman, Tristram Smith, L Eugene Arnold, Xueliang Pan, Kristin A Buchan-Page, Nicole V Brown, Melissa M Ryan, Susan L Hyman, Jessica Hellings, Craig Williams, Jill A Hollway, Luc Lecavalier, Robert R Rice, Sarah McAuliffe-Bellin, Benjamin L Handen
OBJECTIVE: Attention-deficit/hyperactivity disorder (ADHD) symptoms, including inattention and over activity, occur in approximately one-third of children with autism spectrum disorder (ASD). We describe the rate and duration of adverse events in a randomized controlled trial of atomoxetine (ATX) and parent training (PT) for ADHD symptoms and noncompliance in children with ASD. METHODS: We conducted a 10-week, double-blind, 2 × 2 trial of ATX and PT with 128 children (ages 5-14) randomized to ATX alone, ATX+PT, placebo+PT, or placebo alone...
May 16, 2017: Journal of Child and Adolescent Psychopharmacology
https://www.readbyqxmd.com/read/28507117/pharmacokinetics-of-levofloxacin-in-multidrug-and-extensively-drug-resistant-tuberculosis-patients
#9
Natasha Van't Boveneind-Vrubleuskaya, Tatiana Seuruk, Kai van Hateren, Tridia van der Laan, Jos G W Kosterink, Tjip S van der Werf, Dick van Soolingen, Susan van den Hof, Alena Skrahina, Jan-Willem C Alffenaar
Pharmacodynamics are important in treatment of especially multidrug- and extensively resistant tuberculosis (M/XDR-TB). The free area under the concentration time curve in relation to minimal inhibitory concentration (fAUC/MIC) is the most relevant pharmacokinetic (PK)-pharmacodynamic (PD) parameter to predict the efficacy of levofloxacin (LFX). The objective of our study was to assess LFX PK variability in M/XDR-TB patients and its potential consequence for fAUC/MIC ratios. Patients with pulmonary M/XDR-TB received LFX as part of treatment regimen at a dose of 15 mg/kg once daily...
May 15, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28506869/model-based-clinical-dose-optimization-for-phenobarbital-in-neonates-an-illustration-of-the-importance-of-data-sharing-and-external-validation
#10
Swantje Völler, Robert B Flint, Leo M Stolk, Pieter L J Degraeuwe, Sinno H P Simons, Paula Pokorna, David M Burger, Ronald de Groot, Dick Tibboel, Catherijne A J Knibbe
BACKGROUND: Particularly in the pediatric clinical pharmacology field, data-sharing offers the possibility of making the most of all available data. In this study, we utilize previously collected therapeutic drug monitoring (TDM) data of term and preterm newborns to develop a population pharmacokinetic model for phenobarbital. We externally validate the model using prospective phenobarbital data from an ongoing pharmacokinetic study in preterm neonates. METHODS: TDM data from 53 neonates (gestational age (GA): 37 (24-42) weeks, bodyweight: 2...
May 12, 2017: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28506867/towards-personalized-treatment-of-pain-using-a-quantitative-systems-pharmacology-approach
#11
Sebastiaan C Goulooze, Elke H J Krekels, Monique van Dijk, Dick Tibboel, Piet H van der Graaf, Thomas Hankemeier, Catherijne A J Knibbe, J G Coen van Hasselt
Pain is a complex biopsychosocial phenomenon of which the intensity, location and duration depends on various underlying components. Treatment of pain is associated with considerable inter-individual variability, and as such, requires a personalized approach. However, a priori prediction of optimal analgesic treatment for individual patients is still challenging. Another challenge is the assessment and treatment of pain in patients unable to self-report pain. In this mini-review, we first provide a brief overview of the various components underlying pain, and their associated biomarkers...
May 12, 2017: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28506866/non-maturational-covariates-for-dynamic-systems-pharmacology-models-in-neonates-infants-and-children-filling-the-gaps-beyond-developmental-pharmacology
#12
Karel Allegaert, Sinno H P Simons, Dick Tibboel, Elke Krekels, Catherijne Knibbe, John van den Anker
Pharmacokinetics and -dynamics show important changes throughout childhood. Studies on the different maturational processes that influence developmental pharmacology have been used to create population PK/PD models that can yield individualized pediatric drug dosages. These models were subsequently translated to semi-physiologically or physiology-based PK (PBPK) models that support predictions in pediatric patient cohorts and other special populations. Although these translational efforts are crucial, these models should be further improved towards individual patient predictions by including knowledge on non-maturational covariates...
May 12, 2017: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28503958/neonatal-management-and-outcome-in-alloimmune-hemolytic-disease
#13
Isabelle M C Ree, Vivianne E H J Smits-Wintjens, Johanna G van der Bom, Jeanine M M van Klink, Dick Oepkes, Enrico Lopriore
Hemolytic disease of the fetus and newborn (HDFN) occurs when fetal and neonatal erythroid cells are destroyed by maternal erythrocyte alloantibodies, it leads to anemia and hydrops in the fetus, and hyperbilirubinemia and kernicterus in the newborn. Postnatal care consists of intensive phototherapy and exchange transfusions to treat severe hyperbilirubinemia and top-up transfusions to treat early and late anemia. Other postnatal complications have been reported such as thrombocytopenia, iron overload and cholestasis requiring specific management...
May 13, 2017: Expert Review of Hematology
https://www.readbyqxmd.com/read/28503133/behavioral-senescence-and-aging-related-changes-in-motor-neurons-and-brain-neuromodulator-levels-are-ameliorated-by-lifespan-extending-reproductive-dormancy-in-drosophila
#14
Sifang Liao, Susan Broughton, Dick R Nässel
The lifespan of Drosophilamelanogaster can be extended substantially by inducing reproductive dormancy (also known as diapause) by lowered temperature and short days. This increase of longevity is accompanied by lowered metabolism and increased stress tolerance. We ask here whether behavioral senescence is ameliorated during adult dormancy. To study this we kept flies for seven or more weeks in normal rearing conditions or in diapause conditions and compared to 1-week-old flies in different behavioral assays of sleep, negative geotaxis and exploratory walking...
2017: Frontiers in Cellular Neuroscience
https://www.readbyqxmd.com/read/28502995/the-psycho-lexical-approach-in-exploring-the-field-of-values-a-reply-to-schwartz
#15
Boele De Raad, Marieke E Timmerman, Fabia Morales-Vives, Walter Renner, Dick P H Barelds, Jan Pieter Van Oudenhoven
We reply to each of the issues raised by Schwartz in a commentary on our article on a comparison of value taxonomies. We discuss two approaches, mentioned in that commentary, the lexical approach and the theory-driven approach, especially with respect to their capacities in covering the domain of values and with respect to the representation of important values in a useful structure. We refute the critique by Schwartz that the lexical approach is superfluous, because his theory "toward universals in values" would already cover all values, and that their mutual relationships are relevant to individuals around the globe...
April 2017: Journal of Cross-cultural Psychology
https://www.readbyqxmd.com/read/28502674/evidence-based-drug-treatment-for-special-patient-populations-through-model-based-approaches
#16
REVIEW
Elke H J Krekels, J G Coen van Hasselt, John N van den Anker, Karel Allegaert, Dick Tibboel, Catherijne A J Knibbe
The majority of marketed drugs remain understudied in some patient populations such as pregnant women, paediatrics, the obese, the critically-ill, and the elderly. As a consequence, currently used dosing regimens may not assure optimal efficacy or minimal toxicity in these patients. Given the vulnerability of some subpopulations and the challenges and costs of performing clinical studies in these populations, cutting-edge approaches are needed to effectively develop evidence-based and individualized drug dosing regimens...
May 11, 2017: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28502574/diner-database-for-insect-neuropeptide-research
#17
Joseph G C Yeoh, Aniruddha A Pandit, Meet Zandawala, Dick R Nässel, Shireen-Anne Davies, Julian A T Dow
Neuropeptides are responsible for regulating a variety of functions, including development, metabolism, water and ion homeostasis, and as neuromodulators in circuits of the central nervous system. Numerous neuropeptides have been identified and characterized. However, both discovery and functional characterization of neuropeptides across the massive Class Insecta has been sporadic. To leverage advances in post-genomic technologies for this rapidly growing field, insect neuroendocrinology requires a consolidated, comprehensive and standardised resource for managing neuropeptide information...
May 11, 2017: Insect Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28499112/polygenic-risk-personality-dimensions-and-adolescent-alcohol-use-problems-a-longitudinal-study
#18
James J Li, Jeanne E Savage, Kenneth S Kendler, Matthew Hickman, Liam Mahedy, John Macleod, Jaakko Kaprio, Richard J Rose, Danielle M Dick
OBJECTIVE: Alcohol use problems are common during adolescence and can predict serious negative outcomes in adulthood, including substance dependence and psychopathology. The current study examines the notion that alcohol use problems are driven by polygenic influences and that genetic influences may indirectly affect alcohol use problems through multiple pathways of risk, including variations in personality. METHOD: We used a genome-wide approach to examine associations between genetic risk for alcohol use problems, personality dimensions, and adolescent alcohol use problems in two separate longitudinal population-based samples, the Finnish Twin Cohort (FinnTwin12) and the Avon Longitudinal Study of Parents and Children (ALSPAC)...
May 2017: Journal of Studies on Alcohol and Drugs
https://www.readbyqxmd.com/read/28498521/does-drought-stress-modify-the-effects-of-plant-growth-promoting-rhizobacteria-on-an-aboveground-chewing-herbivore
#19
Maite Fernández de Bobadilla, Julia Friman, Nurmi Pangesti, Marcel Dicke, Joop J A van Loon, Ana Pineda
Soil microbes have important effects on the interactions of plants with their environment, by promoting plant growth, inducing resistance to pests or by conferring tolerance to abiotic stress. However, their effects are variable and the factors responsible for this variation are mainly unknown. Our aim was to assess how drought stress modifies the effect of the non-pathogenic rhizobacterium Pseudomonas simiae WCS417r on plant growth and resistance against the generalist leaf-chewing caterpillar Mamestra brassicae...
May 12, 2017: Insect Science
https://www.readbyqxmd.com/read/28498427/effect-of-macrophages-on-breast-cancer-cell-proliferation-and-on-expression-of-hormone-receptors-upar-and-her-2
#20
Therése Lindsten, Alexander Hedbrant, Anna Ramberg, Jonny Wijkander, Anja Solterbeck, Margareta Eriksson, Dick Delbro, Ann Erlandsson
Malignant tumors, including breast cancers, are frequently infiltrated with innate immune cells and tumor-associated macrophages (TAMs) represent the major inflammatory component in stroma of many tumors. In this study, we examined the immunoreactivity of the macrophage markers CD68 and CD163 as well as the hormone receptors estrogen receptor α (ERα), progesterone receptor (PR), estrogen receptor β1 (ERβ1), human epidermal growth factor receptor 2 (HER-2), matrix metalloproteinase 9 (MMP‑9), urokinase-type plasminogen activator receptor (uPAR) and the proliferations marker Ki67 in 17 breast cancer biopsies...
May 11, 2017: International Journal of Oncology
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