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https://www.readbyqxmd.com/read/28323214/immunological-interactions-between-piscine-orthoreovirus-and-salmonid-alphavirus-infections-in-atlantic-salmon
#1
Magnus Vikan Røsæg, Morten Lund, Ingvild Berg Nyman, Turhan Markussen, Vidar Aspehaug, Hilde Sindre, Maria Krudtaa Dahle, Espen Rimstad
Heart and skeletal muscle inflammation (HSMI) and pancreas disease (PD) cause substantial losses in Atlantic salmon (Salmo salar) aquaculture. The respective causative agents, Piscine orthoreovirus (PRV) and Salmonid alphavirus (SAV), are widespread and often concurrently present in farmed salmon. An experimental infection in Atlantic salmon was conducted to study the interaction between the two viruses, including the immunological mechanisms involved. The co-infected fish were infected with PRV four or ten weeks before they were infected with SAV...
March 18, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28322700/increased-proinflammatory-cytokine-levels-in-prolonged-arthralgia-in-ross-river-virus-infection
#2
Dennis Tappe, José Vicente Pérez-Girón, Sergio Gómez-Medina, Stephan Günther, César Muñoz-Fontela, Jonas Schmidt-Chanasit
Ross River virus, a mosquitoborne alphavirus, causes epidemic polyarthritis in Australia and the Pacific region. We analyzed serum cytokine, chemokine, and growth factor levels in travelers returning to Germany from Australia. Serum samples showed elevated concentrations in the acute phase of the illness and, more pronounced, in the long-lasting convalescent phase.
April 2017: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/28288924/global-expansion-of-chikungunya-virus-mapping-the-64-year-history
#3
REVIEW
Braira Wahid, Amjad Ali, Shazia Rafique, Muhammad Idrees
Chikungunya virus (CHIKV) is a mosquito-transmitted alphavirus that is emerging as a global threat because of its highly debilitating nature and unprecedented magnitude. The disease originated from Africa and then hit the entire globe causing large number of epidemics that infected millions of people in Asia, Indian subcontinent, Europe, Americas, and Pacific Islands. According to phylogenetic analysis, four different genotypes of CHIKV are: Asian, West African, East/Central/South African (ECSA), and Indian Ocean lineage (IOL)...
March 10, 2017: International Journal of Infectious Diseases: IJID
https://www.readbyqxmd.com/read/28288385/alphaviruses-suppress-host-immunity-by-preventing-myeloid-cell-replication-and-antagonizing-innate-immune-responses
#4
REVIEW
Derek W Trobaugh, William B Klimstra
Alphaviruses are medically important mosquito-borne viruses that cause a range of diseases in humans from febrile illness to arthritis or encephalitis. The innate immune response functions to suppress virus replication through upregulation of antiviral molecules and contributes to development of the adaptive immune response. Myeloid cells act as master regulators of virus infection by initiating both the innate and adaptive immune responses. Alphaviruses are capable of antagonizing individual components of these responses to increase replicative fitness in vivo...
March 10, 2017: Current Opinion in Virology
https://www.readbyqxmd.com/read/28278416/arboviral-diseases-and-malaria-in-australia-2013-14-annual-report-of-the-national-arbovirus-and-malaria-advisory-committee
#5
Katrina E Knope, Mike Muller, Nina Kurucz, Stephen L Doggett, Rebecca Feldman, Cheryl A Johansen, Michaela Hobby, Sonya Bennett, Stacey Lynch, Angus Sly, Bart J Currie
This report describes the epidemiology of mosquito-borne diseases of public health importance in Australia during the 2013-14 season (1 July 2013 to 30 June 2014) and includes data from human notifications, sentinel chicken, vector and virus surveillance programs. The National Notifiable Diseases Surveillance System received notifications for 8,898 cases of disease transmitted by mosquitoes during the 2013-14 season. The Australasian alphaviruses Barmah Forest virus and Ross River virus accounted for 6,372 (72%) total notifications...
September 30, 2016: Communicable Diseases Intelligence Quarterly Report
https://www.readbyqxmd.com/read/28264056/salmonid-alphavirus-infection-causes-skin-dysbiosis-in-atlantic-salmon-salmo-salar-l-post-smolts
#6
Kristin M Reid, Sonal Patel, Aaron J Robinson, Lijing Bu, Jiraporn Jarungsriapisit, Lindsey J Moore, Irene Salinas
Interactions among host, microbiota and viral pathogens are complex and poorly understood. The goal of the present study is to assess the changes in the skin microbial community of Atlantic salmon (Salmo salar L.) in response to experimental infection with salmonid alphavirus (SAV). The salmon skin microbial community was determined using 16S rDNA pyrosequencing in five different experimental groups: control, 7 days after infection with low-dose SAV, 14 days after infection with low-dose SAV, 7 days after infection with high-dose SAV, and 14 days after infection with high-dose SAV...
2017: PloS One
https://www.readbyqxmd.com/read/28249012/correction-a-prime-boost-vaccination-strategy-in-cattle-to-prevent-foot-and-mouth-disease-using-a-single-cycle-alphavirus-vector-and-empty-capsid-particles
#7
Maria Gullberg, Louise Lohse, Anette Bøtner, Gerald M McInerney, Alison Burman, Terry Jackson, Charlotta Polacek, Graham J Belsham
[This corrects the article DOI: 10.1371/journal.pone.0157435.].
2017: PloS One
https://www.readbyqxmd.com/read/28248978/chikungunya-virus-disease-outbreak-in-yap-state-federated-states-of-micronesia
#8
Daniel M Pastula, W Thane Hancock, Martin Bel, Holly Biggs, Maria Marfel, Robert Lanciotti, Janeen Laven, Tai-Ho Chen, J Erin Staples, Marc Fischer, Susan L Hills
BACKGROUND: Chikungunya virus is a mosquito-borne alphavirus which causes an acute febrile illness associated with polyarthralgia. Beginning in August 2013, clinicians from the Yap State Department of Health in the Federated States of Micronesia (FSM) identified an unusual cluster of illness which was subsequently confirmed to be chikungunya virus disease. Chikungunya virus disease previously had not been recognized in FSM. METHODOLOGY/PRINCIPAL FINDINGS: Information from patients presenting to healthcare facilities was collected and analyzed...
March 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28239513/rapid-molecular-detection-of-zika-virus-in-acute-phase-urine-samples-using-the-recombinase-polymerase-amplification-assay
#9
Ahmed Abd El Wahed, Sabri Saeed Sanabani, Oumar Faye, Rodrigo Pessôa, João Veras Patriota, Ricardo Rodrigues Giorgi, Pranav Patel, Susanne Böhlken-Fascher, Olfert Landt, Matthias Niedrig, Paolo Marinho de Andrade Zanotto, Claus Peter Czerny, Amadou A Sall, Manfred Weidmann
BACKGROUND: Currently the detection of Zika virus (ZIKV) in patient samples is done by real-time RT-PCR. Samples collected from rural area are sent to highly equipped laboratories for screening. A rapid point-of-care test is needed to detect the virus, especially at low resource settings. METHODOLOGY/PRINCIPAL FINDINGS: In this report, we describe the development of a reverse transcription isothermal recombinase polymerase amplification (RT-RPA) assay for the identification of ZIKV...
January 25, 2017: PLoS Currents
https://www.readbyqxmd.com/read/28223982/mouse-model-of-neurological-complications-resulting-from-encephalitic-alphavirus-infection
#10
Shannon E Ronca, Jeanon Smith, Takaaki Koma, Magda M Miller, Nadezhda Yun, Kelly T Dineley, Slobodan Paessler
Long-term neurological complications, termed sequelae, can result from viral encephalitis, which are not well understood. In human survivors, alphavirus encephalitis can cause severe neurobehavioral changes, in the most extreme cases, a schizophrenic-like syndrome. In the present study, we aimed to adapt an animal model of alphavirus infection survival to study the development of these long-term neurological complications. Upon low-dose infection of wild-type C57B/6 mice, asymptomatic and symptomatic groups were established and compared to mock-infected mice to measure general health and baseline neurological function, including the acoustic startle response and prepulse inhibition paradigm...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28223458/mutation-of-the-n-terminal-region-of-chikungunya-virus-capsid-protein-implications-for-vaccine-design
#11
Adam Taylor, Xiang Liu, Ali Zaid, Lucas Y H Goh, Jody Hobson-Peters, Roy A Hall, Andres Merits, Suresh Mahalingam
Mosquito-transmitted chikungunya virus (CHIKV) is an arthritogenic alphavirus of the Togaviridae family responsible for frequent outbreaks of arthritic disease in humans. Capsid protein, a structural protein encoded by the CHIKV RNA genome, is able to translocate to the host cell nucleolus. In encephalitic alphaviruses, nuclear translocation induces host cell transcriptional shutoff; however, the role of capsid protein nucleolar localization in arthritogenic alphaviruses remains unclear. Using recombinant enhanced green fluorescent protein (EGFP)-tagged expression constructs and CHIKV infectious clones, we describe a nucleolar localization sequence (NoLS) in the N-terminal region of capsid protein, previously uncharacterized in CHIKV...
February 21, 2017: MBio
https://www.readbyqxmd.com/read/28222120/brugia-malayi-microfilariae-transport-alphaviruses-across-the-mosquito-midgut
#12
Jefferson A Vaughan, Michael J Turell
Concurrent ingestion of microfilariae (MF) and arboviruses by mosquitoes can enhance mosquito transmission of virus compared to when virus is ingested alone. Within hours of being ingested, MF penetrate the mosquito midgut and introduce virus into mosquito hemocoel, creating a disseminated viral infection much sooner than normal. How virus is actually introduced is not known. In this report, we present experimental evidence that suggests that certain alphaviruses may adhere or otherwise associate with sheathed Brugia malayi MF in the blood of a dually-infected host and that the virus is carried into the mosquito hemocoel by the MF during their penetration of the mosquito midgut...
2017: PloS One
https://www.readbyqxmd.com/read/28213871/thieno-2-3-b-pyridine-derivatives-a-new-class-of-antiviral-drugs-against-mayaro-virus
#13
Raquel Amorim, Marcelo Damião Ferreira de Meneses, Julio Cesar Borges, Luiz Carlos da Silva Pinheiro, Lucio Ayres Caldas, Claudio Cesar Cirne-Santos, Marcos Vinícius Palmeira de Mello, Alessandra Mendonça Teles de Souza, Helena Carla Castro, Izabel Christina Nunes de Palmer Paixão, Renata de Mendonça Campos, Ingrid E Bergmann, Viviana Malirat, Alice Maria Rolim Bernardino, Moacyr Alcoforado Rebello, Davis Fernandes Ferreira
Mayaro virus (MAYV) is an arthropod-borne virus and a member of the family Togaviridae, genus Alphavirus. Its infection leads to an acute illness accompanied by long-lasting arthralgia. To date, there are no antiviral drugs or vaccines against infection with MAYV and resources for the prevention or treatment of other alphaviruses are very limited. MAYV has served as a model to study the antiviral potential of several substances on alphavirus replication. In this work we evaluated the antiviral effect of seven new derivatives of thieno[2,3-b]pyridine against MAYV replication in a mammalian cell line...
February 17, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28207896/rna-seq-analysis-of-chikungunya-virus-infection-and-identification-of-granzyme-a-as-a-major-promoter-of-arthritic-inflammation
#14
Jane A C Wilson, Natalie A Prow, Wayne A Schroder, Jonathan J Ellis, Helen E Cumming, Linden J Gearing, Yee Suan Poo, Adam Taylor, Paul J Hertzog, Francesca Di Giallonardo, Linda Hueston, Roger Le Grand, Bing Tang, Thuy T Le, Joy Gardner, Suresh Mahalingam, Pierre Roques, Phillip I Bird, Andreas Suhrbier
Chikungunya virus (CHIKV) is an arthritogenic alphavirus causing epidemics of acute and chronic arthritic disease. Herein we describe a comprehensive RNA-Seq analysis of feet and lymph nodes at peak viraemia (day 2 post infection), acute arthritis (day 7) and chronic disease (day 30) in the CHIKV adult wild-type mouse model. Genes previously shown to be up-regulated in CHIKV patients were also up-regulated in the mouse model. CHIKV sequence information was also obtained with up to ≈8% of the reads mapping to the viral genome; however, no adaptive viral genome changes were apparent...
February 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28206905/discovery-of-a-novel-alphavirus-related-to-eilat-virus
#15
Kyra Hermanns, Florian Zirkel, Anne Kopp, Marco Marklewitz, Innocent B Rwego, Alejandro Estrada, Thomas R Gillespie, Christian Drosten, Sandra Junglen
Most alphaviruses are transmitted by arthropods and infect vertebrate hosts. An exception is Eilat virus (EILV), the only described alphavirus with a host range restricted to insects. We established a new generic reverse transcription PCR assay for alphaviruses and tested 8860 tropical mosquitoes. We detected a novel alphavirus, tentatively named Taï Forest alphavirus (TALV), in Culex decens mosquitoes collected in Ivory Coast. The full genome was sequenced, and closest similarity was found to EILV. Pairwise amino acid identities to EILV ranged between 67 and 88 % for the corresponding proteins, suggesting that TALV defines a proposed new alphavirus species...
January 2017: Journal of General Virology
https://www.readbyqxmd.com/read/28196962/spatial-and-temporal-analysis-of-alphavirus-replication-and-assembly-in-mammalian-and-mosquito-cells
#16
Joyce Jose, Aaron B Taylor, Richard J Kuhn
Sindbis virus (SINV [genus Alphavirus, family Togaviridae]) is an enveloped, mosquito-borne virus. Alphaviruses cause cytolytic infections in mammalian cells while establishing noncytopathic, persistent infections in mosquito cells. Mosquito vector adaptation of alphaviruses is a major factor in the transmission of epidemic strains of alphaviruses. Though extensive studies have been performed on infected mammalian cells, the morphological and structural elements of alphavirus replication and assembly remain poorly understood in mosquito cells...
February 14, 2017: MBio
https://www.readbyqxmd.com/read/28194661/guillain-barre-syndrome-complicating-chikungunya-virus-infection
#17
Ayush Agarwal, Deepti Vibha, Achal Kumar Srivastava, Garima Shukla, Kameshwar Prasad
Chikungunya virus (CHIKV) is a mosquito-borne alphavirus which presents with symptoms of fever, rash, arthralgia, and occasional neurologic disease. While outbreaks have been earlier reported from India and other parts of the world, the recent outbreak in India witnessed more than 1000 cases. Various systemic and rarely neurological complications have been reported with CHIKV. We report two cases of Guillain-Barré syndrome (GBS) with CHIKV. GBS is a rare neurological complication which may occur after subsidence of fever and constitutional symptoms by several neurotropic viruses...
February 13, 2017: Journal of Neurovirology
https://www.readbyqxmd.com/read/28153792/mosquito-borne-viruses-circulating-in-kinshasa-democratic-republic-of-the-congo
#18
Kennedy Makola Mbanzulu, Roger Wumba, Jean-Pierre Kambala Mukendi, Josué Kikana Zanga, Fortunate Shija, Thierry Lengu Bobanga, Michel Ntetani Aloni, Gerald Misinzo
BACKGROUND: Diseases caused by mosquito-borne viruses are among the most important emerging diseases that threaten human and animal health, particularly in Africa. However, little attention has been paid to these diseases in the Democratic Republic of the Congo (DRC). The present cross-sectional study was undertaken between March and May 2014 to investigate the presence of mosquito-borne viruses in mosquitoes collected from five municipalities of Kinshasa, DRC. METHODS: Mosquitoes were collected using BG-Sentinel traps and battery-powered aspirators...
January 30, 2017: International Journal of Infectious Diseases: IJID
https://www.readbyqxmd.com/read/28148838/fingolimod-treatment-abrogates-chikungunya-virus-induced-arthralgia
#19
Teck-Hui Teo, Yi-Hao Chan, Wendy W L Lee, Fok-Moon Lum, Siti Naqiah Amrun, Zhisheng Her, Ravisankar Rajarethinam, Andres Merits, Olaf Rötzschke, Laurent Rénia, Lisa F P Ng
Chikungunya virus (CHIKV) is one of the many rheumatic arthropod-borne alphaviruses responsible for debilitating joint inflammation in humans. Despite the severity in many endemic regions, clinically approved intervention targeting the virus remains unavailable. CD4(+) T cells have been shown to mediate CHIKV-induced joint inflammation in mice. We demonstrate here that transfer of splenic CD4(+) T cells from virus-infected C57BL/6 mice into virus-infected T cell receptor-deficient (TCR(-/-)) mice recapitulated severe joint pathology including inflammation, vascular leakages, subcutaneous edema, and skeletal muscle necrosis...
February 1, 2017: Science Translational Medicine
https://www.readbyqxmd.com/read/28148804/a-microrna-screen-identifies-the-wnt-signaling-pathway-as-a-regulator-of-the-interferon-response-during-flavivirus-infection
#20
Jessica L Smith, Sophia Jeng, Shannon K McWeeney, Alec J Hirsch
The impact of mosquito-borne flavivirus infections worldwide is significant, and many critical aspects of these viruses' biology, including virus-host interactions, host cell requirements for replication, and how virus-host interactions impact pathology, remain to be fully understood. The recent re-emergence and spread of flaviviruses, including dengue virus (DENV), West Nile virus (WNV), and Zika virus (ZIKV), highlights the importance of performing basic research on this important group of pathogens. MicroRNAs (miRNAs) are small, noncoding RNAs that modulate gene expression post-transcriptionally and have been demonstrated to regulate a broad range of cellular processes...
February 1, 2017: Journal of Virology
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