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https://www.readbyqxmd.com/read/29149215/longitudinal-survey-of-two-serotine-bat-eptesicus-serotinus-maternity-colonies-exposed-to-eblv-1-european-bat-lyssavirus-type-1-assessment-of-survival-and-serological-status-variations-using-capture-recapture-models
#1
Emmanuelle Robardet, Christophe Borel, Marie Moinet, Dorothée Jouan, Marine Wasniewski, Jacques Barrat, Franck Boué, Elodie Montchâtre-Leroy, Alexandre Servat, Olivier Gimenez, Florence Cliquet, Evelyne Picard-Meyer
This study describes two longitudinal serological surveys of European Bat Lyssavirus type 1 (EBLV-1) antibodies in serotine bat (Eptesicus serotinus) maternity colonies located in the North-East of France. This species is currently considered as the main EBLV-1 reservoir. Multievent capture-recapture models were used to determine the factors influencing bat rabies transmission as this method accounts for imperfect detection and uncertainty in disease states. Considering the period of study, analyses revealed that survival and recapture probabilities were not affected by the serological status of individuals, confirming the capacity of bats to be exposed to lyssaviruses without dying...
November 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29122670/infection-of-neuroblastoma-cells-by-rabies-virus-is-modulated-by-the-virus-titer
#2
Natalia Langenfeld Fuoco, Sandriana Dos Ramos Silva, Elaine Raniero Fernandes, Fernanda Guedes Luiz, Orlando Garcia Ribeiro, Iana Suly Santos Katz
Rabies is a lethal viral infection that can affect almost all mammals, including humans. To better understand the replication of Rabies lyssavirus, we investigated if the viral load in brains naturally infected with rabies influences viral internalization and viral growth kinetics in neuroblastoma cells, and if the viral load affects mortality in mice after intradermal infection. We noted that high initial viral loads in brains (group II) were unfavourable for increasing viral titers during serial passages in neuroblastoma cells when compared to low initial viral loads in brains (group I)...
November 6, 2017: Antiviral Research
https://www.readbyqxmd.com/read/29084223/molecular-characterization-and-phylogenetic-relatedness-of-dog-derived-rabies-viruses-circulating-in-cameroon-between-2010-and-2016
#3
Serge Alain Sadeuh-Mba, Jean Blaise Momo, Laura Besong, Sévérin Loul, Richard Njouom
Rabies is enzootic among dog populations in some parts of Cameroon and the risk of human rabies is thought to be steadily high in these regions. However, the molecular epidemiology of circulating Rabies Virus (RABV) has been hardly considered in Cameroon as well as in most neighboring central African countries. To address this fundamental gap, 76 nucleoprotein (N) gene sequences of dog-derived RABV were obtained from 100 brain specimens sampled in Cameroon from 2010 to 2016. Studied sequences were subjected to molecular and phylogenetic analyses with reference strains retrieved from databases...
October 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29029727/the-recently-discovered-bokeloh-bat-lyssavirus-insights-into-its-genetic-heterogeneity-and-spatial-distribution-in-europe-and-the-population-genetics-of-its-primary-host
#4
Elisa Eggerbauer, Cécile Troupin, Karsten Passior, Florian Pfaff, Dirk Höper, Antonie Neubauer-Juric, Stephanie Haberl, Christiane Bouchier, Thomas C Mettenleiter, Hervé Bourhy, Thomas Müller, Laurent Dacheux, Conrad M Freuling
In 2010, a novel lyssavirus named Bokeloh bat lyssavirus (BBLV) was isolated from a Natterer's bat (Myotis nattereri) in Germany. Two further viruses were isolated in the same country and in France in recent years, all from the same bat species and all found in moribund or dead bats. Here we report the description and the full-length genome sequence of five additional BBLV isolates from Germany (n=4) and France (n=1). Interestingly, all of them were isolated from the Natterer's bat, except one from Germany, which was found in a common Pipistrelle bat (Pipistrellus pipistrellus), a widespread and abundant bat species in Europe...
2017: Advances in Virus Research
https://www.readbyqxmd.com/read/28969696/efficacy-of-rabies-vaccines-in-dogs-and-cats-and-protection-in-a-mouse-model-against-european-bat-lyssavirus-type-2
#5
Tiina Nokireki, Miia Jakava-Viljanen, Anna-Maija Virtala, Liisa Sihvonen
BACKGROUND: Rabies is preventable by pre- and/or post-exposure prophylaxis consisting of series of rabies vaccinations and in some cases the use of immunoglobulins. The success of vaccination can be estimated either by measuring virus neutralising antibodies or by challenge experiment. Vaccines based on rabies virus offer cross-protection against other lyssaviruses closely related to rabies virus. The aim was to assess the success of rabies vaccination measured by the antibody response in dogs (n = 10,071) and cats (n = 722), as well as to investigate the factors influencing the response to vaccination when animals failed to reach a rabies antibody titre of ≥ 0...
October 2, 2017: Acta Veterinaria Scandinavica
https://www.readbyqxmd.com/read/28959255/immunological-control-of-viral-infections-in-bats-and-the-emergence-of-viruses-highly-pathogenic-to-humans
#6
Tony Schountz, Michelle L Baker, John Butler, Vincent Munster
Bats are reservoir hosts of many important viruses that cause substantial disease in humans, including coronaviruses, filoviruses, lyssaviruses, and henipaviruses. Other than the lyssaviruses, they do not appear to cause disease in the reservoir bats, thus an explanation for the dichotomous outcomes of infections of humans and bat reservoirs remains to be determined. Bats appear to have a few unusual features that may account for these differences, including evidence of constitutive interferon (IFN) activation and greater combinatorial diversity in immunoglobulin genes that do not undergo substantial affinity maturation...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28946904/second-case-of-european-bat-lyssavirus-type-2-detected-in-a-daubenton-s-bat-in-finland
#7
Tiina Nokireki, Tarja Sironen, Teemu Smura, Veera Karkamo, Liisa Sihvonen, Tuija Gadd
European bat lyssavirus type 2 (EBLV-2) was detected in Finland in a Daubenton's bat (Myotis daubentonii) found in the municipality of Inkoo (60°02'45″N, 024°00'20″E). The bat showed neurological signs and was later found dead. The laboratory analysis revealed the presence of lyssavirus, and the virus was characterized as EBLV-2. This isolation of EBLV-2 was the second time that the virus has been detected in a Daubenton's bat in Finland. This provides additional proof that EBLV-2 is endemic in the Finnish Daubenton's bat population...
September 25, 2017: Acta Veterinaria Scandinavica
https://www.readbyqxmd.com/read/28854792/large-protein-as-a-potential-target-for-use-in-rabies-diagnostics
#8
I S Santos Katz, M H Dias, I F Lima, L B Chaves, O G Ribeiro, K C Scheffer, L K Iwai
Rabies is a zoonotic viral disease that remains a serious threat to public health worldwide. The rabies lyssavirus (RABV) genome encodes five structural proteins, multifunctional and significant for pathogenicity. The large protein (L) presents well-conserved genomic regions, which may be a good alternative to generate informative datasets for development of new methods for rabies diagnosis. This paper describes the development of a technique for the identification of L protein in several RABV strains from different hosts, demonstrating that MS-based proteomics is a potential method for antigen identification and a good alternative for rabies diagnosis...
2017: Acta Virologica
https://www.readbyqxmd.com/read/28841446/the-phenotype-of-the-rabv-glycoprotein-determines-cellular-and-global-virus-load-in-the-brain-and-is-decisive-for-the-pace-of-the-disease
#9
M A R Bertoune, B Nickl, T Krieger, L Wohlers, G A Bonaterra, B Dietzschold, E Weihe, M Bette
The Rabies lyssavirus glycoprotein (RABV-G) is largely responsible for the neuroinvasiveness of the virus and the induction of antiviral immune responses. To study the effects of RABV-G we compared the G of the attenuated RABV variant SPBN with that of the pathogenic DOG4 strain. Infection via the olfactory route caused 100% mortality in mice with both virus variants. Of note, with the attenuated SPBN, progression of the disease was accelerated, microglia response less pronounced and IL-6 expression higher than in the presence of RABV-G from the pathogenic DOG4...
November 2017: Virology
https://www.readbyqxmd.com/read/28768857/molecular-function-analysis-of-rabies-virus-rna-polymerase-l-protein-by-using-an-l-gene-deficient-virus
#10
Kento Nakagawa, Yuki Kobayashi, Naoto Ito, Yoshiyuki Suzuki, Kazuma Okada, Machiko Makino, Hideo Goto, Tatsuki Takahashi, Makoto Sugiyama
While the RNA-dependent RNA polymerase L protein of rabies virus (RABV), a member of the genus Lyssavirus of the family Rhabdoviridae, has potential to be a therapeutic target for rabies, the molecular functions of this protein have remained largely unknown. In this study, to obtain a novel experimental tool for molecular function analysis of the RABV L protein, we established by using a reverse genetics approach an L gene-deficient RABV (Nishi-ΔL/Nluc), which infects, propagates, and correspondingly produces NanoLuc luciferase in cultured neuroblastoma cells transfected to express the L protein...
October 15, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28737119/passive-surveillance-of-united-kingdom-bats-for-lyssaviruses-2005-2015
#11
E L Wise, D A Marston, A C Banyard, H Goharriz, D Selden, N Maclaren, T Goddard, N Johnson, L M McElhinney, A Brouwer, J N Aegerter, G C Smith, D L Horton, A C Breed, A R Fooks
Passive surveillance for lyssaviruses in UK bats has been ongoing since 1987 and has identified 13 cases of EBLV-2 from a single species; Myotis daubentonii. No other lyssavirus species has been detected. Between 2005 and 2015, 10 656 bats were submitted, representing 18 species, creating a spatially and temporally uneven sample of British bat fauna. Uniquely, three UK cases originate from a roost at Stokesay Castle in Shropshire, England, where daily checks for grounded and dead bats are undertaken and bat carcasses have been submitted for testing since 2007...
September 2017: Epidemiology and Infection
https://www.readbyqxmd.com/read/28730326/infectious-diseases-causing-autonomic-dysfunction
#12
REVIEW
Francisco Javier Carod Artal
OBJECTIVES: To review infectious diseases that may cause autonomic dysfunction. METHODS: Review of published papers indexed in medline/embase. RESULTS: Autonomic dysfunction has been reported in retrovirus (human immunodeficiency virus (HIV), human T-lymphotropic virus), herpes viruses, flavivirus, enterovirus 71 and lyssavirus infections. Autonomic dysfunction is relatively common in HIV-infected patients and heart rate variability is reduced even in early stages of infection...
July 20, 2017: Clinical Autonomic Research: Official Journal of the Clinical Autonomic Research Society
https://www.readbyqxmd.com/read/28710271/novel-alphacoronaviruses-and-paramyxoviruses-cocirculate-with-type-1-and-severe-acute-respiratory-system-sars-related-betacoronaviruses-in-synanthropic-bats-of-luxembourg
#13
Maude Pauly, Jacques B Pir, Catherine Loesch, Aurélie Sausy, Chantal J Snoeck, Judith M Hübschen, Claude P Muller
Several infectious disease outbreaks with high mortality in humans have been attributed to viruses that are thought to have evolved from bat viruses. In this study from Luxembourg, the genetic diversity and epidemiology of paramyxoviruses and coronaviruses shed by the bat species Rhinolophus ferrumequinum and Myotis emarginatus were evaluated. Feces collection (n = 624) was performed longitudinally in a mixed-species colony in 2015 and 2016. In addition, feces (n = 254) were collected cross-sectionally from six Myotis emarginatus colonies in 2016...
September 15, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28693578/first-detection-of-european-bat-lyssavirus-type-2-eblv-2-in-norway
#14
Torfinn Moldal, Turid Vikøren, Florence Cliquet, Denise A Marston, Jeroen van der Kooij, Knut Madslien, Irene Ørpetveit
BACKGROUND: In Europe, bat rabies is primarily attributed to European bat lyssavirus type 1 (EBLV-1) and European bat lyssavirus type 2 (EBLV-2) which are both strongly host-specific. Approximately thirty cases of infection with EBLV-2 in Daubenton's bats (Myotis daubentonii) and pond bats (M. dasycneme) have been reported. Two human cases of rabies caused by EBLV-2 have also been confirmed during the last thirty years, while natural spill-over to other non-flying mammals has never been reported...
July 11, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/28681345/lyssavirus-phosphoproteins-increase-mitochondrial-complex-i-activity-and-levels-of-reactive-oxygen-species
#15
Wafa Kammouni, Heidi Wood, Alan C Jackson
We have previously demonstrated that serine residues at positions 162 and 166 of the rabies virus (RABV) phosphoprotein (P) are critical for oxidative stress induced by CVS in cultured cells. We have now evaluated the P of two street RABV variants and Mokola (MOK) virus. The P of these viruses, like CVS, induces an increase in complex I activities and reactive oxygen species levels in transfected cells. Although the sequence homology of P is only 45% with MOK (higher for street viruses) and CVS, serine residues are conserved at positions 162 and 166, suggesting their potential importance in oxidative stress...
October 2017: Journal of Neurovirology
https://www.readbyqxmd.com/read/28643547/rabies%C3%A2-%C3%A2-epidemiology-pathogenesis-public-health-concerns-and-advances-in-diagnosis-and-control-a-comprehensive-review
#16
Rajendra Singh, Karam Pal Singh, Susan Cherian, Mani Saminathan, Sanjay Kapoor, G B Manjunatha Reddy, Shibani Panda, Kuldeep Dhama
Rabies is a zoonotic, fatal and progressive neurological infection caused by rabies virus of the genus Lyssavirus and family Rhabdoviridae. It affects all warm-blooded animals and the disease is prevalent throughout the world and endemic in many countries except in Islands like Australia and Antarctica. Over 60,000 peoples die every year due to rabies, while approximately 15 million people receive rabies post-exposure prophylaxis (PEP) annually. Bite of rabid animals and saliva of infected host are mainly responsible for transmission and wildlife like raccoons, skunks, bats and foxes are main reservoirs for rabies...
December 2017: Veterinary Quarterly
https://www.readbyqxmd.com/read/28628617/comparative-analysis-of-european-bat-lyssavirus-1-pathogenicity-in-the-mouse-model
#17
COMPARATIVE STUDY
Elisa Eggerbauer, Florian Pfaff, Stefan Finke, Dirk Höper, Martin Beer, Thomas C Mettenleiter, Tobias Nolden, Jens-Peter Teifke, Thomas Müller, Conrad M Freuling
European bat lyssavirus 1 is responsible for most bat rabies cases in Europe. Although EBLV-1 isolates display a high degree of sequence identity, different sublineages exist. In individual isolates various insertions and deletions have been identified, with unknown impact on viral replication and pathogenicity. In order to assess whether different genetic features of EBLV-1 isolates correlate with phenotypic changes, different EBLV-1 variants were compared for pathogenicity in the mouse model. Groups of three mice were infected intracranially (i...
June 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28385500/successful-strategies-implemented-towards-the-elimination-of-canine-rabies-in-the-western-hemisphere
#18
REVIEW
Andres Velasco-Villa, Luis E Escobar, Anthony Sanchez, Mang Shi, Daniel G Streicker, Nadia F Gallardo-Romero, Fernando Vargas-Pino, Veronica Gutierrez-Cedillo, Inger Damon, Ginny Emerson
Almost all cases of human rabies result from dog bites, making the elimination of canine rabies a global priority. During recent decades, many countries in the Western Hemisphere have carried out large-scale dog vaccination campaigns, controlled their free-ranging dog populations and enforced legislation for responsible pet ownership. This article reviews progress in eliminating canine rabies from the Western Hemisphere. After briefly summarizing the history of control efforts and describing the approaches listed above, we note that programs in some countries have been hindered by societal attitudes and severe economic disparities, which underlines the need to discuss measures that will be required to complete the elimination of canine rabies throughout the region...
July 2017: Antiviral Research
https://www.readbyqxmd.com/read/28365457/the-history-of-rabies-in-the-western-hemisphere
#19
REVIEW
Andres Velasco-Villa, Matthew R Mauldin, Mang Shi, Luis E Escobar, Nadia F Gallardo-Romero, Inger Damon, Victoria A Olson, Daniel G Streicker, Ginny Emerson
Before the introduction of control programs in the 20th century, rabies in domestic dogs occurred throughout the Western Hemisphere. However, historical records and phylogenetic analysis of multiple virus isolates indicate that, before the arrival of the first European colonizers, rabies virus was likely present only in bats and skunks. Canine rabies was either rare or absent among domestic dogs of Native Americans, and first arrived when many new dog breeds were imported during the period of European colonization...
October 2017: Antiviral Research
https://www.readbyqxmd.com/read/28342196/a-dna-logic-gate-automaton-for-detection-of-rabies-and-other-lyssaviruses
#20
Pavithra Vijayakumar, Joanne Macdonald
Immediate activation of biosensors is not always desirable, particularly if activation is due to non-specific interactions. Here we demonstrate the use of deoxyribozyme-based logic gate networks arranged into visual displays to precisely control activation of biosensors, and demonstrate a prototype molecular automaton able to discriminate between seven different genotypes of Lyssaviruses, including Rabies virus. The device uses novel mixed-base logic gates to enable detection of the large diversity of Lyssavirus sequence populations, while an ANDNOT logic gate prevents non-specific activation across genotypes...
March 25, 2017: Chemphyschem: a European Journal of Chemical Physics and Physical Chemistry
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