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https://www.readbyqxmd.com/read/29169405/atypical-creutzfeldt-jakob-disease-with-prp-amyloid-plaques-in-white-matter-molecular-characterization-and-transmission-to-bank-voles-show-the-m1-strain-signature
#1
Marcello Rossi, Daniela Saverioni, Michele Di Bari, Simone Baiardi, Afina Willemina Lemstra, Laura Pirisinu, Sabina Capellari, Annemieke Rozemuller, Romolo Nonno, Piero Parchi
Amyloid plaques formed by abnormal prion protein (PrPSc) aggregates occur with low frequency in Creutzfeldt-Jakob disease, but represent a pathological hallmark of three relatively rare disease histotypes, namely variant CJD, sporadic CJDMV2K (methionine/valine at PRNP codon 129, PrPSc type 2 and kuru-type amyloid plaques) and iatrogenic CJDMMiK (MM at codon 129, PrPSc of intermediate type and kuru plaques). According to recent studies, however, PrP-amyloid plaques involving the subcortical and deep nuclei white matter may also rarely occur in CJDMM1 (MM at codon 129 and PrPSc type 1), the most common CJD histotype...
November 23, 2017: Acta Neuropathologica Communications
https://www.readbyqxmd.com/read/29151870/elevated-mitochondrial-genome-variation-after-50-generations-of-radiation-exposure-in-a-wild-rodent
#2
Robert J Baker, Benjamin Dickins, Jeffrey K Wickliffe, Faisal A A Khan, Sergey Gaschak, Kateryna D Makova, Caleb D Phillips
Currently, the effects of chronic, continuous low dose environmental irradiation on the mitochondrial genome of resident small mammals are unknown. Using the bank vole (Myodes glareolus) as a model system, we tested the hypothesis that approximately 50 generations of exposure to the Chernobyl environment has significantly altered genetic diversity of the mitochondrial genome. Using deep sequencing, we compared mitochondrial genomes from 131 individuals from reference sites with radioactive contamination comparable to that present in northern Ukraine before the 26 April 1986 meltdown, to populations where substantial fallout was deposited following the nuclear accident...
September 2017: Evolutionary Applications
https://www.readbyqxmd.com/read/29129019/genetic-characterization-of-bank-vole-virus-bavv-a-new-paramyxovirus-isolated-from-kidneys-of-bank-voles-in-russia
#3
Sergey Alkhovsky, Alexander Butenko, Aykaz Eremyan, Alexey Shchetinin
A genome of bank vole virus (BaVV), isolated from kidney tissues of bank voles (Myodes glareolus) in Russia in 1973, was sequenced. The genomic organization of BaVV (3'-N-P/V/C-M-F-G-L-5', 16,992 nt in length; GenBank accession number MF943130) is most similar to that of Mossman virus (MoV) and Nariva virus (NarPV), two ungrouped paramyxoviruses isolated from rodents in Australia and Trinidad, respectively. The proteins of BaVV have the highest level of sequence identity (ranging from 23-28% for G protein to 66-73% for M protein) to proteins of MoV and NarPV...
November 11, 2017: Archives of Virology
https://www.readbyqxmd.com/read/29079088/seasonal-shift-of-diet-in-bank-voles-explains-trophic-fate-of-anthropogenic-osmium
#4
Frauke Ecke, Åsa M M Berglund, Ilia Rodushkin, Emma Engström, Nicola Pallavicini, Dieke Sörlin, Erik Nyholm, Birger Hörnfeldt
Diet shifts are common in mammals and birds, but little is known about how such shifts along the food web affect contaminant exposure. Voles are staple food for many mammalian and avian predators. There is therefore a risk of transfer of contaminants accumulated in voles within the food chain. Osmium is one of the rarest earth elements with osmium tetroxide (OsO4) as the most toxic vapor-phase airborne contaminant. Anthropogenic OsO4 accumulates in fruticose lichens that are important winter food of bank voles (Myodes glareolus)...
October 24, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29035861/the-molecular-identification-of-calodium-hepaticum-in-the-wild-brown-rat-rattus-norvegicus-in-poland
#5
Katarzyna Buńkowska-Gawlik, Agnieszka Perec-Matysiak, Klaudia Burzyńska, Joanna Hildebrand
Calodium hepaticum is a parasitic nematode found primarily in rodents but known to infect numerous other mammal species, and causing in humans the hepatic calodiasis. Herein, we present the first finding of C. hepaticum in Rattus norvegicus in Poland. In this study, we have used the combined pepsin-HCl digestion and molecular techniques to detect C. hepaticum infection in the liver. The results confirm the usefulness of molecular approaches for investigating the biology and epidemiology of C. hepaticum. Additionally in this study, the parts of the small subunit rRNA (18S rRNA) gene of Aonchotheca annulosa from bank vole, Aonchotheca erinacei and Eucoleus sp...
December 20, 2017: Acta Parasitologica
https://www.readbyqxmd.com/read/28986730/acute-hantavirus-infection-presenting-as-haemolytic-uraemic-syndrome-hus-the-importance-of-early-clinical-diagnosis
#6
J Clement, A P K Lee, G A Verpooten, L Laenen, V Vergote, H De Samblanx, Z N Berneman, M Van Ranst, P Maes
The European prototype of hantavirus, Puumala virus (PUUV), isolated from a common wild rodent, the bank vole (Myodes glareolus), causes nephropathia epidemica (NE). NE can perfectly mimic haemolytic-uraemic syndrome (HUS), progressing from an aspecific flu-like syndrome to acute kidney injury with thrombocytopaenia, and presenting with some signs of haemolytic anaemia and/or coagulopathy. Moreover, both NE and HUS can occur in local outbreaks. We report an isolated case of NE, initially referred for plasmapheresis for suspected HUS, although signs of overt haemolysis were lacking...
October 6, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28978309/soluble-polymorphic-bank-vole-prion-proteins-induced-by-co-expression-of-quiescin-sulfhydryl-oxidase-in-e-coli-and-their-aggregation-behaviors
#7
Romany Abskharon, Johnny Dang, Ameer Elfarash, Zerui Wang, Pingping Shen, Lewis S Zou, Sedky Hassan, Fei Wang, Hisashi Fujioka, Jan Steyaert, Mentor Mulaj, Witold K Surewicz, Joaquín Castilla, Alexandre Wohlkonig, Wen-Quan Zou
BACKGROUND: The infectious prion protein (PrP(Sc) or prion) is derived from its cellular form (PrP(C)) through a conformational transition in animal and human prion diseases. Studies have shown that the interspecies conversion of PrP(C) to PrP(Sc) is largely swayed by species barriers, which is mainly deciphered by the sequence and conformation of the proteins among species. However, the bank vole PrP(C) (BVPrP) is highly susceptible to PrP(Sc) from different species. Transgenic mice expressing BVPrP with the polymorphic isoleucine (109I) but methionine (109M) at residue 109 spontaneously develop prion disease...
October 4, 2017: Microbial Cell Factories
https://www.readbyqxmd.com/read/28931606/asparagine-and-glutamine-ladders-promote-cross-species-prion-conversion
#8
Timothy D Kurt, Patricia Aguilar-Calvo, Lin Jiang, José A Rodriguez, Nazilla Alderson, David S Eisenberg, Christina J Sigurdson
Prion transmission between species is governed in part by primary sequence similarity between the infectious prion aggregate, PrP(Sc), and the cellular prion protein of the host, PrP(C) A puzzling feature of prion formation is that certain PrP(C) sequences, such as that of bank vole, can be converted by a remarkably broad array of different mammalian prions, whereas others, such as rabbit, show robust resistance to cross-species prion conversion. To examine the structural determinants that confer susceptibility or resistance to prion conversion, we systematically tested over 40 PrP(C) variants of susceptible and resistant PrP(C) sequences in a prion conversion assay...
September 20, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28931451/bank-vole-immunoheterogeneity-may-limit-nephropatia-epidemica-emergence-in-a-french-non-endemic-region
#9
A Dubois, G Castel, S Murri, C Pulido, J-B Pons, L Benoit, A Loiseau, L Lakhdar, M Galan, P Marianneau, N Charbonnel
Ecoevolutionary processes affecting hosts, vectors and pathogens are important drivers of zoonotic disease emergence. In this study, we focused on nephropathia epidemica (NE), which is caused by Puumala hantavirus (PUUV) whose natural reservoir is the bank vole, Myodes glareolus. We questioned the possibility of NE emergence in a French region that is considered to be NE-free but that is adjacent to a NE-endemic region. We first confirmed the epidemiology of these two regions and we demonstrated the absence of spatial barriers that could have limited dispersal, and consequently, the spread of PUUV into the NE-free region...
September 21, 2017: Parasitology
https://www.readbyqxmd.com/read/28878040/glareosin-a-novel-sexually-dimorphic-urinary-lipocalin-in-the-bank-vole-myodes-glareolus
#10
Grace M Loxley, Jennifer Unsworth, Michael J Turton, Alexandra Jebb, Kathryn S Lilley, Deborah M Simpson, Daniel J Rigden, Jane L Hurst, Robert J Beynon
The urine of bank voles (Myodes glareolus) contains substantial quantities of a small protein that is expressed at much higher levels in males than females, and at higher levels in males in the breeding season. This protein was purified and completely sequenced at the protein level by mass spectrometry. Leucine/isoleucine ambiguity was completely resolved by metabolic labelling, monitoring the incorporation of dietary deuterated leucine into specific sites in the protein. The predicted mass of the sequenced protein was exactly consonant with the mass of the protein measured in bank vole urine samples, correcting for the formation of two disulfide bonds...
September 2017: Open Biology
https://www.readbyqxmd.com/read/28870264/cryptosporidium-infecting-wild-cricetid-rodents-from-the-subfamilies-arvicolinae-and-neotominae
#11
Brianna L S Stenger, Michaela Horčičková, Mark E Clark, Martin Kváč, Šárka Čondlová, Eakalak Khan, Giovanni Widmer, Lihua Xiao, Catherine W Giddings, Christopher Pennil, Michal Stanko, Bohumil Sak, John M McEvoy
We undertook a study on Cryptosporidium spp. in wild cricetid rodents. Fecal samples were collected from meadow voles (Microtus pennsylvanicus), southern red-backed voles (Myodes gapperi), woodland voles (Microtus pinetorum), muskrats (Ondatra zibethicus) and Peromyscus spp. mice in North America, and from bank voles (Myodes glareolus) and common voles (Microtus arvalis) in Europe. Isolates were characterized by sequence and phylogenetic analyses of the small subunit ribosomal RNA (SSU) and actin genes. Overall, 33·2% (362/1089) of cricetids tested positive for Cryptosporidium, with a greater prevalence in cricetids from North America (50·7%; 302/596) than Europe (12·1%; 60/493)...
September 5, 2017: Parasitology
https://www.readbyqxmd.com/read/28852943/comparative-stylostome-ultrastructure-of-hirsutiella-zachvatkini-trombiculidae-and-trombidium-holosericeum-trombidiidae-larvae
#12
Andrey B Shatrov, Magdalena Felska
Stylostomes (feeding tubes) of Hirsutiella zachvatkini (Schluger) (Trombiculidae), feeding on bank voles [Myodes glareolus (Schreber)], and of Trombidium holosericeum (L.) (Trombidiidae), feeding on larvae of Stenodemini sp. (Heteroptera, Miridae), were studied by TEM methods and on semi-thin sections. The stylostome of H. zachvatkini is a homogeneous structure of low electron density and without strict margins. It extends within the concave host epidermis, undergoing hyperplasia and hyperkeratosis. TEM does not reveal any obvious stratification in the stylostome walls...
August 2017: Experimental & Applied Acarology
https://www.readbyqxmd.com/read/28820402/does-signaling-of-estrogen-related-receptors-affect-structure-and-function-of-bank-vole-leydig-cells
#13
P Pawlicki, A Milon, M Zarzycka, J Galas, W Tworzydlo, A Kaminska, L Pardyak, K Lesniak, A Pacwa, B Bilinska, E Gorowska-Wojtowicz, M Kotula-Balak
To get a deeper insight into the function of estrogen-related receptors (ERRs) and dissect underlying mechanism in Leydig cells, ERRs (type α, β and γ) were blocked or activated in testes of adult bank voles (Myodes glareolus) which show seasonal changes in the intratesticular sex hormones level. Both actively reproducing animals (long day conditions; LD) and those with regression of the reproductive system (short day conditions; SD) received intraperitoneal injections of selective ERRα antagonist 3-[4-(2,4-Bis-trifluoromethylbenzyloxy)-3-methoxyphenyl]-2-cyano-N-(5-trifluoromethyl-1,3,4-thiadiazol-2-yl)acrylamide (XCT 790) or selective ERRβ/ERRγ agonist N-(4-(Diethylaminobenzylidenyl)-N'-(4-hydroxybenzoyl)-hydrazine (DY131) (50 μ/kg bw; six doses every other day)...
June 2017: Journal of Physiology and Pharmacology: An Official Journal of the Polish Physiological Society
https://www.readbyqxmd.com/read/28808032/mechanical-constraint-from-growing-jaw-facilitates-mammalian-dental-diversity
#14
Elodie Renvoisé, Kathryn D Kavanagh, Vincent Lazzari, Teemu J Häkkinen, Ritva Rice, Sophie Pantalacci, Isaac Salazar-Ciudad, Jukka Jernvall
Much of the basic information about individual organ development comes from studies using model species. Whereas conservation of gene regulatory networks across higher taxa supports generalizations made from a limited number of species, generality of mechanistic inferences remains to be tested in tissue culture systems. Here, using mammalian tooth explants cultured in isolation, we investigate self-regulation of patterning by comparing developing molars of the mouse, the model species of mammalian research, and the bank vole...
August 29, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28803134/age-related-changes-of-physiological-performance-and-survivorship-of-bank-voles-selected-for-high-aerobic-capacity
#15
Agata Marta Rudolf, Maciej Jan Dańko, Edyta Teresa Sadowska, Geoffrey Dheyongera, Paweł Koteja
Variation in lifespans is an intriguing phenomenon, but how metabolic rate influence this variation remains unclear. High aerobic capacity can result in health benefits, but also in increased oxidative damage and accelerated ageing. We tested these contradictory predictions using bank voles (Myodes=Clethrionomys glareolus) from lines selected for high swim-induced aerobic metabolism (A), which had about 50% higher maximum metabolic rate and a higher basal and routine metabolic rates, than those from unselected control lines (C)...
August 10, 2017: Experimental Gerontology
https://www.readbyqxmd.com/read/28799685/ecological-factors-influencing-small-mammal-infection-by-anaplasma-phagocytophilum-and-borrelia-burgdorferi-s-l-in-agricultural-and-forest-landscapes
#16
Grégoire Perez, Suzanne Bastian, Amélie Chastagner, Albert Agoulon, Olivier Plantard, Gwenaël Vourc'h, Alain Butet
Small mammals are key components of numerous tick-borne disease systems, as hosts for immature ticks and pathogen reservoirs. To study the factors influencing tick-borne infection in small mammals, we trapped small mammals and collected questing ticks in spring and autumn in 2012 and 2013 at 24 sites in a 10 × 15 km rural landscapes (Brittany, France). Tissue samples were screened by real-time PCR for Anaplasma phagocytophilum and Borrelia burgdorferi sensu lato. Of the two dominant small mammal species captured, bank voles (Myodes glareolus) had higher prevalence than wood mice (Apodemus sylvaticus) for both infections, presumably because of specific differences in immunological defenses...
August 11, 2017: Environmental Microbiology
https://www.readbyqxmd.com/read/28791488/the-bruce-effect-revisited-is-pregnancy-termination-in-female-rodents-an-adaptation-to-ensure-breeding-success-after-male-turnover-in-low-densities
#17
Jana A Eccard, Melanie Dammhahn, Hannu Ylönen
Pregnancy termination after encountering a strange male, the Bruce effect, is regarded as a counterstrategy of female mammals towards anticipated infanticide. While confirmed in caged rodent pairs, no verification for the Bruce effect existed from experimental field populations of small rodents. We suggest that the effect may be adaptive for breeding rodent females only under specific conditions related to populations with cyclically fluctuating densities. We investigated the occurrence of delay in birth date after experimental turnover of the breeding male under different population composition in bank voles (Myodes glareolus) in large outdoor enclosures: one-male-multiple-females (n = 6 populations/18 females), multiple-males-multiple-females (n = 15/45), and single-male-single-female (MF treatment, n = 74/74)...
September 2017: Oecologia
https://www.readbyqxmd.com/read/28770071/dampening-of-population-cycles-in-voles-affects-small-mammal-community-structure-decreases-diversity-and-increases-prevalence-of-a-zoonotic-disease
#18
Frauke Ecke, David G Angeler, Magnus Magnusson, Hussein Khalil, Birger Hörnfeldt
Long-term decline and depression of density in cyclic small rodents is a recent widespread phenomenon. These observed changes at the population level might have cascading effects at the ecosystem level. Here, we assessed relationships between changing boreal landscapes and biodiversity changes of small mammal communities. We also inferred potential effects of observed community changes for increased transmission risk of Puumala virus (PUUV) spread, causing the zoonotic disease nephropatica epidemica in humans...
July 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28747170/spatial-prediction-and-validation-of-zoonotic-hazard-through-micro-habitat-properties-where-does-puumala-hantavirus-hole-up
#19
Hussein Khalil, Gert Olsson, Magnus Magnusson, Magnus Evander, Birger Hörnfeldt, Frauke Ecke
BACKGROUND: To predict the risk of infectious diseases originating in wildlife, it is important to identify habitats that allow the co-occurrence of pathogens and their hosts. Puumala hantavirus (PUUV) is a directly-transmitted RNA virus that causes hemorrhagic fever in humans, and is carried and transmitted by the bank vole (Myodes glareolus). In northern Sweden, bank voles undergo 3-4 year population cycles, during which their spatial distribution varies greatly. METHODS: We used boosted regression trees; a technique inspired by machine learning, on a 10 - year time-series (fall 2003-2013) to develop a spatial predictive model assessing seasonal PUUV hazard using micro-habitat variables in a landscape heavily modified by forestry...
July 26, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28664467/phylogenetic-analysis-of-puumala-virus-strains-from-central-europe-highlights-the-need-for-a-full-genome-perspective-on-hantavirus-evolution
#20
Róbert Szabó, Lukáš Radosa, Martina Ličková, Monika Sláviková, Marta Heroldová, Michal Stanko, Milan Pejčoch, Anja Osterberg, Lies Laenen, Susanne Schex, Rainer G Ulrich, Sandra Essbauer, Piet Maes, Boris Klempa
Puumala virus (PUUV), carried by bank voles (Myodes glareolus), is the medically most important hantavirus in Central and Western Europe. In this study, a total of 523 bank voles (408 from Germany, 72 from Slovakia, and 43 from Czech Republic) collected between the years 2007-2012 were analyzed for the presence of hantavirus RNA. Partial PUUV genome segment sequences were obtained from 51 voles. Phylogenetic analyses of all three genome segments showed that the newfound strains cluster with other Central and Western European PUUV strains...
June 29, 2017: Virus Genes
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