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https://www.readbyqxmd.com/read/28101934/detection-of-neonatal-unit-clusters-of-candida-parapsilosis-fungaemia-by-microsatellite-genotyping-results-from-laboratory-based-sentinel-surveillance-south-africa-2009-2010
#1
Rindidzani E Magobo, Serisha D Naicker, Jeannette Wadula, Maphoshane Nchabeleng, Yacoob Coovadia, Anwar Hoosen, Shawn R Lockhart, Nelesh P Govender
Neonatal candidaemia is a common, deadly and costly hospital-associated disease. To determine the genetic diversity of Candida parapsilosis causing fungaemia in South African neonatal intensive care units (NICUs). From February 2009 through to August 2010, cases of candidaemia were reported through laboratory-based surveillance. C. parapsilosis isolates from neonatal cases were submitted for identification by internal transcribed spacer (ITS) region sequencing, antifungal susceptibility testing and microsatellite genotyping...
January 19, 2017: Mycoses
https://www.readbyqxmd.com/read/28101534/pathogenicity-determinants-of-the-human-malaria-parasite-plasmodium-falciparum-have-ancient-origins
#2
Andrew J Brazier, Marion Avril, Maria Bernabeu, Maxwell Benjamin, Joseph D Smith
Plasmodium falciparum, the most deadly of the human malaria parasites, is a member of the Laverania subgenus that also infects African Great Apes. The virulence of P. falciparum is related to cytoadhesion of infected erythrocytes in microvasculature, but the origin of dangerous parasite adhesion traits is poorly understood. To investigate the evolutionary history of the P. falciparum cytoadhesion pathogenicity determinant, we studied adhesion domains from the chimpanzee malaria parasite P. reichenowi. We demonstrate that the P...
January 2017: MSphere
https://www.readbyqxmd.com/read/28095668/recovery-of-oswaldotrema-nacinovici-from-whimbrels-aves-in-korea
#3
Young-Il Lee, Ok-Sik Chung, Min Seo
Adult specimens of Oswaldotrema nacinovici (Digenea: Philophthalmidae) have been first identified in Korea from 2 migratory birds (whimbrels, Numenius phaeopus) which were found dead at a western seashore area near Gunsan. The worms were recovered in the intestine of these birds. The worms were morphologically characterized by a large ventral sucker in comparison to the oral sucker, an external seminal vesicle extending beyond the posterior margin of the ventral sucker, and conspicuous uterine seminal receptacle...
December 2016: Korean Journal of Parasitology
https://www.readbyqxmd.com/read/28081126/a-pan-lyssavirus-taqman-real-time-rt-pcr-assay-for-the-detection-of-highly-variable-rabies-virus-and-other-lyssaviruses
#4
Ashutosh Wadhwa, Kimberly Wilkins, Jinxin Gao, Rene Edgar Condori Condori, Crystal M Gigante, Hui Zhao, Xiaoyue Ma, James A Ellison, Lauren Greenberg, Andres Velasco-Villa, Lillian Orciari, Yu Li
Rabies, resulting from infection by Rabies virus (RABV) and related lyssaviruses, is one of the most deadly zoonotic diseases and is responsible for up to 70,000 estimated human deaths worldwide each year. Rapid and accurate laboratory diagnosis of rabies is essential for timely administration of post-exposure prophylaxis in humans and control of the disease in animals. Currently, only the direct fluorescent antibody (DFA) test is recommended for routine rabies diagnosis. Reverse-transcription polymerase chain reaction (RT-PCR) based diagnostic methods have been widely adapted for the diagnosis of other viral pathogens, but there is currently no widely accepted rapid real-time RT-PCR assay for the detection of all lyssaviruses...
January 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28075017/intrapopulation-variability-in-the-timing-of-ontogenetic-habitat-shifts-in-sea-turtles-revealed-using-%C3%AE-15-n-values-from-bone-growth-rings
#5
Calandra N Turner Tomaszewicz, Jeffrey A Seminoff, S Hoyt Peckham, Larisa Avens, Carolyn M Kurle
Determining location and timing of ontogenetic shifts in the habitat use of highly migratory species, along with possible intrapopulation variation in these shifts, is essential for understanding mechanisms driving alternate life histories and assessing overall population trends. Measuring variations in multi-year habitat-use patterns is especially difficult for remote oceanic species. To investigate the potential for differential habitat use among migratory marine vertebrates, we measured the naturally occurring stable nitrogen isotope (δ(15) N) patterns that differentiate distinct ocean regions to create a 'regional isotope characterization', analysed the δ(15) N values from annual bone growth layer rings from dead-stranded animals, and then combined the bone and regional isotope data to track individual animal movement patterns over multiple years...
January 11, 2017: Journal of Animal Ecology
https://www.readbyqxmd.com/read/28063214/reciprocal-regulation-between-%C3%AE-trcp-and-smurf1-suppresses-proliferative-capacity-of-liver-cancer-cells
#6
Yue Zhang, Wenhua Wang, Si Cai, Yan Chen, Qinwan Wang, Qiuhui Pan, Fenyong Sun, Jiayi Wang
We previously reported that both the ubiquitin E3 ligases βTrCP (beta-transducin repeat-containing E3 ubiquitin protein ligase) and Smurf1 (SMAD-specific E3 ubiquitin protein ligase 1) play similar antitumorigenic roles in liver cancer cells. However, whether and how they are reciprocally regulated remains elusive. Here, we show that βTrCP interacts with Smurf1 through the 7 × tryptophan (W) aspartic acid (D)(WD) 40 and the region homologous to the E6-AP carboxyl terminus (HECT) domains, which are the E3 ligase domains of βTrCP and Smurf1, respectively...
January 7, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28062180/determination-of-cryothermal-injury-thresholds-in-tissues-impacted-by-cardiac-cryoablation
#7
Ryan P Goff, Stephen G Quallich, Robert A Buechler, John C Bischof, Paul A Iaizzo
Despite widespread clinical use of cryoablation, there remain questions regarding dosing and treatment times which may affect efficacy and collateral injury. Dosing and treatment times are directly related to the degree of cooling necessary for effective lesion formation. Human and swine atrial, ventricular, and lung tissues were ablated using two cryoablation systems with concurrent infrared thermography. Post freeze-thaw samples were cultured and stained to differentiate viable and non-viable tissue. Matlab code correlated viability staining to applied freeze-thaw thermal cycles, to determine injury thresholds...
January 3, 2017: Cryobiology
https://www.readbyqxmd.com/read/28052499/ecosystem-carbon-density-and-allocation-across-a-chronosequence-of-longleaf-pine-forests
#8
Lisa J Samuelson, Thomas A Stokes, John R Butnor, Kurt H Johnsen, Carlos A Gonzalez-Benecke, Timothy A Martin, Wendell P Cropper, Pete H Anderson, Michael R Ramirez, John C Lewis
Forests can partially offset greenhouse gas emissions and contribute to climate change mitigation, mainly through increases in live biomass. We quantified carbon (C) density in 20 managed longleaf pine (Pinus palustris Mill.) forests ranging in age from 5 to 118 years located across the southeastern United States and estimated above- and belowground C trajectories. Ecosystem C stock (all pools including soil C) and aboveground live tree C increased nonlinearly with stand age and the modeled asymptotic maxima were 168 Mg C/ha and 80 Mg C/ha, respectively...
January 2017: Ecological Applications: a Publication of the Ecological Society of America
https://www.readbyqxmd.com/read/28038871/sphagnum-establishment-in-alkaline-fens-importance-of-weather-and-water-chemistry
#9
Eliška Vicherová, Michal Hájek, Petr Šmilauer, Tomáš Hájek
Sphagnum expansion to alkaline fens has accelerated during the last decades in Europe, leading to changes in diversity, habitat distributions and carbon storage. The causes are still not clearly understood and involve an interplay between climate change, hydrology, nutrient supply and Sphagnum physiology. We conducted a 4-year field experiment in eight fens in Central European highlands and assessed survival and establishment of individual apical shoot fragments of S. flexuosum, S. warnstorfii and S. squarrosum transplanted along the microtopographical gradient...
December 27, 2016: Science of the Total Environment
https://www.readbyqxmd.com/read/28036197/ringed-structures-of-the-hd-163296-protoplanetary-disk-revealed-by-alma
#10
Andrea Isella, Greta Guidi, Leonardo Testi, Shangfei Liu, Hui Li, Shengtai Li, Erik Weaver, Yann Boehler, John M Carperter, Itziar De Gregorio-Monsalvo, Carlo F Manara, Antonella Natta, Laura M Pérez, Luca Ricci, Anneila Sargent, Marco Tazzari, Neal Turner
We present Atacama Large Millimeter and Submillimeter Array observations of the protoplanetary disk around the Herbig Ae star HD 163296 that trace the spatial distribution of millimeter-sized particles and cold molecular gas on spatial scales as small as 25 astronomical units (A.U.). The image of the disk recorded in the 1.3 mm continuum emission reveals three dark concentric rings that indicate the presence of dust depleted gaps at about 60, 100, and 160 A.U. from the central star. The maps of the ^{12}CO, ^{13}CO, and C^{18}O J=2-1 emission do not show such structures but reveal a change in the slope of the radial intensity profile across the positions of the dark rings in the continuum image...
December 16, 2016: Physical Review Letters
https://www.readbyqxmd.com/read/28027966/sequence-motifs-associated-with-paternal-transmission-of-mitochondrial-dna-in-the-horse-mussel-modiolus-modiolus-bivalvia-mytilidae
#11
Brent M Robicheau, Sophie Breton, Donald T Stewart
In the majority of metazoans paternal mitochondria represent evolutionary dead-ends. In many bivalves, however, this paradigm does not hold true; both maternal and paternal mitochondria are inherited. Herein, we characterize maternal and paternal mitochondrial control regions of the horse mussel, Modiolus modiolus (Bivalvia: Mytilidae). The maternal control region is 808bp long, while the paternal control region is longer at 2.3kb. We hypothesize that the size difference is due to a combination of repeated duplications within the control region of the paternal mtDNA genome, as well as an evolutionarily ancient recombination event between two sex-associated mtDNA genomes that led to the insertion of a second control region sequence in the genome that is now transmitted via males...
December 24, 2016: Gene
https://www.readbyqxmd.com/read/28027708/re-emergence-of-an-orphan-therapeutic-target-for-the-treatment-of-resistant-prostate-cancer-a-thorough-conformational-and-binding-analysis-for-ror-%C3%AE-protein
#12
Umar Ndagi, Ndumiso N Mhlongo, Mahmoud E Soliman
Recent studies have linked a deadly form of prostate cancer known as metastatic castration-resistant prostate cancer (mCRPC) to retinoic acid-related orphan-receptor gamma (ROR-γ). Most of these studies continued to place ROR-γ as orphan because of unidentifiable inhibitor. Recently identified inhibitors of ROR-γ and their therapeutic potential were evaluated, among which inhibitor XY018 was the potent. However, molecular understanding of the conformational features of XY018-ROR-γ complex is still elusive...
December 28, 2016: Journal of Biomolecular Structure & Dynamics
https://www.readbyqxmd.com/read/28025224/bacteria-and-hoverflies-diptera-syrphidae-in-tree-hollows-from-the-iberian-mediterranean-forest
#13
I R Sánchez-Galván, J Ferrer, E Galante, M A Marcos-García
Saproxylic insect communities inhabiting tree hollows in Mediterranean forests depend on a combination of physical characteristics and interactions occurring between community member species. Despite the need to preserve these organisms, little is known about their interrelationships, in particular those relationships between saproxylic insects and microbiota occurring in these microhabitats. In tree hollows of Quercus rotundifolia Lamark that hold water and contain dead leaves, abundant microbial populations can be found...
December 26, 2016: Environmental Entomology
https://www.readbyqxmd.com/read/28018904/3d-volumetric-modeling-and-microvascular-reconstruction-of-irradiated-lumbosacral-defects-after-oncologic-resection
#14
Emilio Garcia-Tutor, Marco Romeo, Michael P Chae, David J Hunter-Smith, Warren Matthew Rozen
BACKGROUND: Locoregional flaps are sufficient in most sacral reconstructions. However, large sacral defects due to malignancy necessitate a different reconstructive approach, with local flaps compromised by radiation and regional flaps inadequate for broad surface areas or substantial volume obliteration. In this report, we present our experience using free muscle transfer for volumetric reconstruction, in such cases, and demonstrate three-dimensional (3D) haptic models of the sacral defect to aid preoperative planning...
2016: Frontiers in Surgery
https://www.readbyqxmd.com/read/28017913/usutu-virus-belgium-2016
#15
M Garigliany, A Linden, G Gilliau, E Levy, M Sarlet, M Franssen, E Benzarti, A Derouaux, F Francis, D Desmecht
During late summer 2016, in a northwest European region extending over Belgium, the Netherlands and the eastern border of the German state of North Rhine Westphalia, an outbreak of wild bird deaths occurred similar to those reported on the continent since 1996. Dead birds were necropsied and examined by complementary methods. Pathologic and immunohistological investigations strongly suggested an infection by Usutu virus. Subsequently, genomic segments of the said virus were detected, the virus was isolated and its complete genome was sequenced...
December 23, 2016: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/28012984/virulence-factors-and-antimicrobial-susceptibility-profile-of-extraintestinal-escherichia-coli-isolated-from-an-avian-colisepticemia-outbreak
#16
Jonas Fernandes Maciel, Letícia Beatriz Matter, Michele Martins Trindade, Giovana Camillo, Maristela Lovato, Sônia de Ávila Botton, Agueda Castagna de Vargas
In this study an avian colisepticemia outbreak was investigated. Two isolates from a chicken with colisepticemia were characterized for antimicrobial susceptibility and virulence factors profile. For this purpose 7 antimicrobial and 29 genes (fimH, hrlA/hek, iha, papC, sfa/focCD, tsh, mat, tia, gimB, ibeA, chuA, fyuA, ireA, iroN, irp2, iucD, sitD. chr., sitD. ep., iss, neuC, ompA, traT, astA, hlyA, sat, vat, pic, malX, cvi/cva) were tested. The outbreak happened in a hick chicken breeding located in the northwestern region of Rio Grande do Sul state in South of Brazil and caused 28...
December 21, 2016: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28003486/feline-immunodeficiency-virus-cross-species-transmission-implications-for-emergence-of-new-lentiviral-infections
#17
Justin Lee, Jennifer L Malmberg, Britta A Wood, Sahaja Hladky, Ryan Troyer, Melody Roelke, Mark Cunningham, Roy McBride, Winston Vickers, Walter Boyce, Erin Boydston, Laurel Serieys, Seth Riley, Kevin Crooks, Sue VandeWoude
: Owing to a complex history of host-parasite coevolution, lentiviruses exhibit a high degree of species specificity. Given the well-documented viral archeology of HIV emergence following human exposures to SIV, understanding processes that promote successful cross-species lentiviral transmissions is highly relevant. We have previously reported natural cross-species transmission of a subtype of feline immunodeficiency virus, puma lentivirus A (PLVA), between bobcats (Lynx rufus) and mountain lions (Puma concolor) in a small number of animals in California and Florida...
December 21, 2016: Journal of Virology
https://www.readbyqxmd.com/read/27999424/polyphyletic-origin-of-mers-coronaviruses-and-isolation-of-a-novel-clade-a-strain-from-dromedary-camels-in-the-united-arab-emirates
#18
Susanna K P Lau, Renate Wernery, Emily Y M Wong, Sunitha Joseph, Alan K L Tsang, Nissy Annie Georgy Patteril, Shyna K Elizabeth, Kwok-Hung Chan, Rubeena Muhammed, Jöerg Kinne, Kwok-Yung Yuen, Ulrich Wernery, Patrick C Y Woo
Little is known regarding the molecular epidemiology of Middle East respiratory syndrome coronavirus (MERS-CoV) circulating in dromedaries outside Saudi Arabia. To address this knowledge gap, we sequenced 10 complete genomes of MERS-CoVs isolated from 2 live and 8 dead dromedaries from different regions in the United Arab Emirates (UAE). Phylogenetic analysis revealed one novel clade A strain, the first detected in the UAE, and nine clade B strains. Strain D998/15 had a distinct phylogenetic position within clade A, being more closely related to the dromedary isolate NRCE-HKU205 from Egypt than to the human isolates EMC/2012 and Jordan-N3/2012...
December 21, 2016: Emerging Microbes & Infections
https://www.readbyqxmd.com/read/27992957/prescribed-burning-consumes-key-forest-structural-components-implications-for-landscape-heterogeneity
#19
Greg J Holland, Michael F Clarke, Andrew F Bennett
Prescribed burning to achieve management objectives is a common practice in fire-prone regions worldwide. Structural components of habitat that are combustible and slow to develop are particularly susceptible to change associated with prescribed burning. We used an experimental, 'whole of landscape' approach to investigate the effect of differing patterns of prescribed burning on key habitat components (logs, stumps, dead trees, litter cover, litter depth and understorey vegetation). Twenty-two landscapes (each ~100 ha) were selected in a dry forest ecosystem in southeast Australia...
December 19, 2016: Ecological Applications: a Publication of the Ecological Society of America
https://www.readbyqxmd.com/read/27989812/lethal-distemper-in-badgers-meles-meles-following-epidemic-in-dogs-and-wolves-evidence-for-viral-adaptation-in-the-wildlife-milieu
#20
Daria Di Sabatino, Gabriella Di Francesco, Guendalina Zaccaria, Daniela Malatesta, Luca Brugnola, Maurilia Marcacci, Ottavio Portanti, Fabrizio De Massis, Giovanni Savini, Liana Teodori, Enzo Ruggieri, Iolanda Mangone, Pietro Badagliacca, Alessio Lorusso
Canine distemper virus (CDV) represents an important conservation threat to many wild carnivores. A large distemper epidemic sustained by an Arctic-lineage strain occurred in Italy in 2013, mainly in the Abruzzi region, causing overt disease in domestic and shepherd dogs, Apennine wolves (Canis lupus) and other wild carnivores. Two badgers were collected by the end of September 2015 in a rural area of the Abruzzi region and were demonstrated to be CDV-positive by real time RT-PCR and IHC in several tissues...
October 27, 2016: Infection, Genetics and Evolution
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