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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
#1
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/28762841/haematuria-is-a-marker-for-the-severity-of-acute-kidney-injury-but-does-not-associate-with-thrombocytopenia-in-acute-puumala-hantavirus-infection
#2
Tuula K Outinen, Paula Mantula, Outi K Laine, Ilkka Pörsti, Antti Vaheri, Satu M Mäkelä, Jukka Mustonen
BACKGROUND: Puumala hantavirus (PUUV) causes haemorrhagic fever with renal syndrome characterized by thrombocytopenia, capillary leakage and acute kidney injury (AKI) with proteinuria and haematuria. Although the typical histologic lesion is acute tubulointerstitial nephritis, the amount of glomerular proteinuria predicts the severity of upcoming AKI. Here, we studied the associations of haematuria and proteinuria with the severity of emerging AKI, thrombocytopenia and markers of coagulation and fibrinolysis in PUUV infection...
August 1, 2017: Infectious Diseases
https://www.readbyqxmd.com/read/28747170/spatial-prediction-and-validation-of-zoonotic-hazard-through-micro-habitat-properties-where-does-puumala-hantavirus-hole-up
#3
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/28734140/deregulation-of-levels-of-angiopoietin-1-and-angiopoietin-2-is-associated-with-severe-courses-of-hantavirus-infection
#4
Christian Nusshag, Anja Osberghaus, Alexandra Baumann, Paul Schnitzler, Martin Zeier, Ellen Krautkrämer
BACKGROUND: Hantavirus disease is characterized by endothelial dysfunction. Angiopoietin-1 (Ang-1) and its antagonist angiopoietin-2 (Ang-2) play a key role in the control of capillary permeability. Ang-1 is responsible for maintenance of cell-to-cell contacts whereas Ang-2 destabilizes monolayers. An imbalance of Ang-1 and Ang-2 levels results in enhanced permeability and capillary leakage. OBJECTIVES: To analyze the involvement of angiopoietins in hantavirus-induced disruption of endothelia, we measured the levels of Ang-1 and Ang-2 in hantavirus infection...
July 11, 2017: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
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
#5
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
https://www.readbyqxmd.com/read/28585306/circulation-and-diagnostics-of-puumala-virus-in-norway-nephropatia-epidemica-incidence-and-rodent-population-dynamics
#6
Natacha Milhano, Lars Korslund, Magnus Evander, Clas Ahlm, Kirsti Vainio, Susanne G Dudman, Åshild Andreassen
Hantaviruses pose a public health concern worldwide causing haemorrhagic fever with renal syndrome (HFRS) and hantavirus pulmonary syndrome (HPS). Puumala virus (PUUV) is the most prevalent hantavirus in Central and Northern Europe, and causes a mild form of HFRS, also known as nephropathia epidemica (NE). In nature, the main host of PUUV is the bank vole (Myodes glareolus), and transmission to humans occurs through inhalation of aerosols from rodent excreta. Nephropathia epidemica is particularly prevalent in Nordic countries, however, few studies of PUUV have been performed in Norway...
August 2017: APMIS: Acta Pathologica, Microbiologica, et Immunologica Scandinavica
https://www.readbyqxmd.com/read/28567209/modelling-human-puumala-hantavirus-infection-in-relation-to-bank-vole-abundance-and-masting-intensity-in-the-netherlands
#7
Arno Swart, Dick L Bekker, Miriam Maas, Ankje de Vries, Roan Pijnacker, Chantal B E M Reusken, Joke W B van der Giessen
This paper deals with modelling the relationship between human Puumala hantavirus (PUUV) infection, the abundance and prevalence of infection of the host (the bank vole), mast, and temperature. These data were used to build and parametrise generalised regression models, and parametrise them using datasets on these factors pertaining to the Netherlands. The performance of the models was assessed by considering their predictive power. Models including mast and monthly temperature performed well, and showed that mast intensity influences vole abundance and hence human exposure for the following year...
2017: Infection Ecology & Epidemiology
https://www.readbyqxmd.com/read/28396283/experimental-infections-of-wild-bank-voles-myodes-glareolus-from-nephropatia-epidemica-endemic-and-non-endemic-regions-revealed-slight-differences-in-puumala-virological-course-and-immunological-responses
#8
Adélaïde Dubois, Guillaume Castel, Séverine Murri, Coralie Pulido, Jean-Baptiste Pons, Laure Benoit, Anne Loiseau, Latifa Lakhdar, Maxime Galan, Nathalie Charbonnel, Philippe Marianneau
In Europe, the occurrence of nephropathia epidemica (NE), a human disease caused by Puumala virus (PUUV), exhibits considerable geographical heterogeneity despite the continuous distribution of its reservoir, the bank vole Myodes glareolus. To better understand the causes of this heterogeneity, wild voles sampled in two adjacent NE endemic and non-endemic regions of France were infected experimentally with PUUV. The responses of bank voles to PUUV infection, based on the levels of anti-PUUV IgG and viral RNA, were compared...
April 8, 2017: Virus Research
https://www.readbyqxmd.com/read/28332927/leptospira-spp-in-small-mammals-from-areas-with-low-and-high-human-hantavirus-incidences-in-south-west-germany
#9
Anna Obiegala, Christoph Albrecht, Maysaa Dafalla, Stephan Drewes, Carolin Oltersdorf, Hendrik Turni, Christian Imholt, Jens Jacob, Christiane Wagner-Wiening, Rainer G Ulrich, Martin Pfeffer
INTRODUCTION: Leptospirosis is caused by Leptospira spp. and is considered the most widespread zoonotic disease worldwide. It mimics nephropathia epidemica in humans, a disease mainly caused by Puumala hantavirus (PUUV). Small mammals are reservoirs for Leptospira spp. and PUUV. Seewis virus (SWSV) is a shrew-borne hantavirus with unknown pathogenicity. The objective of this study was to estimate the prevalence for Leptospira spp. and the frequency of Leptospira-hantavirus co-infections in small mammals collected at locations with high and low incidences in humans...
May 2017: Vector Borne and Zoonotic Diseases
https://www.readbyqxmd.com/read/28319945/glomerular-proteinuria-predicts-the-severity-of-acute-kidney-injury-in-puumala-hantavirus-induced-tubulointerstitial-nephritis
#10
Paula S Mantula, Tuula K Outinen, Jan P G Clement, Heini S A Huhtala, Ilkka H Pörsti, Antti Vaheri, Jukka T Mustonen, Satu M Mäkelä
BACKGROUND: Puumala virus (PUUV)-induced hemorrhagic fever with renal syndrome is common in many European countries. The typical renal histologic lesion is acute tubulointerstitial nephritis. We examined the type and kinetics of urine protein excretion and prognostic significance of proteinuria for the severity of acute kidney injury (AKI) in acute PUUV infection. METHODS: The amount of dipstick albuminuria at hospital admission was analyzed in 205 patients with acute PUUV infection...
2017: Nephron
https://www.readbyqxmd.com/read/28276794/insufficient-efficacy-and-safety-of-intravenous-ribavirin-in-treatment-of-haemorrhagic-fever-with-renal-syndrome-caused-by-puumala-virus
#11
RANDOMIZED CONTROLLED TRIAL
Oleg V Malinin, Alexander E Platonov
BACKGROUND: Intravenous ribavirin has been reported to be an effective treatment for haemorrhagic fever with renal syndrome (HFRS) caused by Hantaan virus in Asia. However, its therapeutic benefits for HFRS caused by Puumala virus (PUUV) in Europe are still unknown. METHODS: A randomized, open-label study of efficacy and safety of intravenous ribavirin in the treatment of HFRS was conducted in the European part of Russia. Seventy-three patients with suspected HFRS within 4 d of the onset of the disease were randomized to receive either intravenous ribavirin (33 mg/kg, followed by 16 mg/kg given every 6 h for 4 d and by 8 mg/kg given every 8 h for 3 d) plus standard therapy (n = 37) or standard therapy alone (n = 36)...
July 2017: Infectious Diseases
https://www.readbyqxmd.com/read/28249631/expansion-of-spatial-and-host-range-of-puumala-virus-in-sweden-an-increasing-threat-for-humans
#12
O Borg, M Wille, P Kjellander, U A Bergvall, P-E Lindgren, J Chirico, Å Lundkvist
Hantaviruses are globally distributed and cause severe human disease. Puumala hantavirus (PUUV) is the most common species in Northern Europe, and the only hantavirus confirmed to circulate in Sweden, restricted to the northern regions of the country. In this study, we aimed to further add to the natural ecology of PUUV in Sweden by investigating prevalence, and spatial and host species infection patterns. Specifically, we wanted to ascertain whether PUUV was present in the natural reservoir, the bank vole (Myodes glareolus) further south than Dalälven river, in south-central Sweden, and whether PUUV can be detected in other rodent species in addition to the natural reservoir...
June 2017: Epidemiology and Infection
https://www.readbyqxmd.com/read/28245831/puumala-hantavirus-infections-in-bank-vole-populations-host-and-virus-dynamics-in-central-europe
#13
Daniela Reil, Ulrike M Rosenfeld, Christian Imholt, Sabrina Schmidt, Rainer G Ulrich, Jana A Eccard, Jens Jacob
BACKGROUND: In Europe, bank voles (Myodes glareolus) are widely distributed and can transmit Puumala virus (PUUV) to humans, which causes a mild to moderate form of haemorrhagic fever with renal syndrome, called nephropathia epidemica. Uncovering the link between host and virus dynamics can help to prevent human PUUV infections in the future. Bank voles were live trapped three times a year in 2010-2013 in three woodland plots in each of four regions in Germany. Bank vole population density was estimated and blood samples collected to detect PUUV specific antibodies...
February 28, 2017: BMC Ecology
https://www.readbyqxmd.com/read/28229289/clinical-aspects-of-hantavirus-infections-in-bulgaria
#14
I Christova, M Pishmisheva, I Trifonova, N Vatev, M Stoycheva, M Tiholova, D Igova, M Baev, R Karagyaurova, U Prokopova
BACKGROUND: Hantaviruses cause two distinct human diseases: hemorrhagic fever with renal syndrome (HFRS) in Asia and Europe and hantavirus pulmonary syndrome (HPS) in America. In Europe, mainly Puumala, Dobrava and Seoul viruses cause HFRS. A total of 23 cases of HFRS were detected in Bulgaria over a 2‑year period 2013-2014. The aim of the study was to present epidemiology, clinical manifestations and laboratory findings of these patients. METHODS: Patients with HFRS were diagnosed using PCR, ELISA and immunoblotting tests...
February 22, 2017: Wiener Klinische Wochenschrift
https://www.readbyqxmd.com/read/28141593/clinical-and-virological-characteristics-of-hantavirus-infections-in-a-2014-croatian-outbreak
#15
Tatjana Vilibic-Cavlek, Alena Furic, Ljubo Barbic, Irena Tabain, Vladimir Stevanovic, Gordana Mlinaric-Galinovic
INTRODUCTION: Croatia is endemic for hemorrhagic fever with renal syndrome (HFRS), with both Puumala (PUUV) and Dobrava virus (DOBV) documented. Several large outbreaks were recorded in 1995, 2002, and 2012. We analyzed demographic, clinical, laboratory, and virological characteristics of HFRS cases detected in three geographically close natural foci (Ogulin, Slunj, and the Plitvice Lakes surroundings) during the 2014 outbreak. METHODOLOGY: From January to December 2014, 122 patients with suspected HFRS were tested for hantavirus IgM/IgG antibodies using an indirect immunofluorescence assay (IFA)...
January 30, 2017: Journal of Infection in Developing Countries
https://www.readbyqxmd.com/read/28093611/a-highly-divergent-puumala-virus-lineage-in-southern-poland
#16
Ulrike M Rosenfeld, Stephan Drewes, Hanan Sheikh Ali, Edyta T Sadowska, Magdalena Mikowska, Gerald Heckel, Paweł Koteja, Rainer G Ulrich
Puumala virus (PUUV) represents one of the most important hantaviruses in Central Europe. Phylogenetic analyses of PUUV strains indicate a strong genetic structuring of this hantavirus. Recently, PUUV sequences were identified in the natural reservoir, the bank vole (Myodes glareolus), collected in the northern part of Poland. The objective of this study was to evaluate the presence of PUUV in bank voles from southern Poland. A total of 72 bank voles were trapped in 2009 at six sites in this part of Poland...
May 2017: Archives of Virology
https://www.readbyqxmd.com/read/28057727/indoleamine-2-3-dioxygenase-activity-is-associated-with-regulatory-t-cell-response-in-acute-puumala-hantavirus-infection
#17
Tuisku-Tuulia Koivula, Anni Tuulasvaara, Iivo Hetemäki, Mikko Hurme, Satu Mäkelä, Jukka Mustonen, Antti Vaheri, T Petteri Arstila
High indoleamine 2,3-dioxygenase (IDO) activity is associated with clinically severe acute infection caused by Puumala hantavirus. The immunoregulatory effects of IDO can be mediated either through metabolic control of effector T cells, caused by depletion of the essential amino acid tryptophan, or intercellular signaling and activation of regulatory T cell responses. Here we have studied 24 patients with acute PUUV infection to distinguish between these possibilities. Maximum IDO activity showed a significant positive correlation with FOXP3 expression levels in regulatory T cells, a quantitative surrogate marker for suppressive capability...
January 5, 2017: Pathogens and Disease
https://www.readbyqxmd.com/read/27983499/host-associated-absence-of-human-puumala-virus-infections-in-northern-and-eastern-germany
#18
Stephan Drewes, Hanan Sheikh Ali, Moritz Saxenhofer, Ulrike M Rosenfeld, Florian Binder, Fabian Cuypers, Mathias Schlegel, Susanne Röhrs, Gerald Heckel, Rainer G Ulrich
Human hantavirus disease cases, caused by Puumala virus (PUUV), are mainly recorded in western and southern areas of Germany. This bank vole reservoir survey confirmed PUUV presence in these regions but its absence in northern and eastern regions. PUUV occurrence is associated with the presence of the Western bank vole phylogroup.
January 2017: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/27956196/microevolution-of-bank-voles-myodes-glareolus-at-neutral-and-immune-related-genes-during-multiannual-dynamic-cycles-consequences-for-puumala-hantavirus-epidemiology
#19
Adelaïde Dubois, Maxime Galan, Jean-François Cosson, Bertrand Gauffre, Heikki Henttonen, Jukka Niemimaa, Maria Razzauti, Liina Voutilainen, Renaud Vitalis, Emmanuel Guivier, Nathalie Charbonnel
Understanding how host dynamics, including variations of population size and dispersal, may affect the epidemiology of infectious diseases through ecological and evolutionary processes is an active research area. Here we focus on a bank vole (Myodes glareolus) metapopulation surveyed in Finland between 2005 and 2009. Bank vole is the reservoir of Puumala hantavirus (PUUV), the agent of nephropathia epidemica (NE, a mild form of hemorrhagic fever with renal symptom) in humans. M. glareolus populations experience multiannual density fluctuations that may influence the level of genetic diversity maintained in bank voles, PUUV prevalence and NE occurrence...
December 9, 2016: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/27918151/reservoir-driven-heterogeneous-distribution-of-recorded-human-puumala-virus-cases-in-south-west-germany
#20
S Drewes, H Turni, U M Rosenfeld, A Obiegala, P Straková, C Imholt, E Glatthaar, K Dressel, M Pfeffer, J Jacob, C Wagner-Wiening, R G Ulrich
Endemic regions for Puumala virus (PUUV) are located in the most affected federal state Baden-Wuerttemberg, South-West Germany, where high numbers of notified human hantavirus disease cases have been occurring for a long time. The distribution of human cases in Baden-Wuerttemberg is, however, heterogeneous, with a high number of cases recorded during 2012 in four districts (H districts) but a low number or even no cases recorded in four other districts (L districts). Bank vole monitoring during 2012, following a beech (Fagus sylvatica) mast year, resulted in the trapping of 499 bank voles, the host of PUUV...
December 5, 2016: Zoonoses and Public Health
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