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https://www.readbyqxmd.com/read/28319188/reduced-performance-of-a-pvc-coated-biogents-sentinel-prototype-in-comparison-to-the-original-biogents-sentinel-for-monitoring-the-asian-tiger-mosquito-aedes-albopictus-in-temperate-north-america
#1
Isik Unlu, Ary Faraji, Michael Morganti, Randy Vaeth, Karen Akaratovic, Jay Kiser, Charles Abadam, Dan Kline
Aedes albopictus is a major nuisance pest and also a public health concern because of the role it plays in the transmission of arboviruses. There is a continuing demand for effective surveillance tools for this species. The first generation of Biogents Sentinel (BGS1) traps have proven to be an effective tool for surveillance of Ae. albopictus throughout its range, however, some defects in construction led to the eventual development of the next generation. We compared the performance of the new generation prototype trap (BGS2P) to the original...
2017: PloS One
https://www.readbyqxmd.com/read/28302930/molecular-characterization-of-an-akabane-virus-isolate-from-west-java-indonesia
#2
Suryo Purnomo Edi, Afif Ibrahim, Rinto Sukoco, Lukman Bunali, Masaji Taguchi, Tomoko Kato, Tohru Yanase, Hiroaki Shirafuji
We isolated an arbovirus from bovine blood in Indonesia. The arbovirus was obtained from the plasma of a cow showing no clinical symptoms in West Java in February 2014, and was identified as Akabane virus (AKAV) by AKAV-specific RT-PCR and subsequent sequence analysis. Phylogenetic analysis based on partial S segment indicated the AKAV isolate, WJ-1SA/P/2014, was most closely related with two isolates from Israel and Turkey reported in 2001 and 2015, respectively, and that WJ-1SA/P/2014 isolate belongs to AKAV genogroup Ib...
March 8, 2017: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/28302156/mapping-the-spatial-distribution-of-the-japanese-encephalitis-vector-culex-tritaeniorhynchus-giles-1901-diptera-culicidae-within-areas-of-japanese-encephalitis-risk
#3
Joshua Longbottom, Annie J Browne, David M Pigott, Marianne E Sinka, Nick Golding, Simon I Hay, Catherine L Moyes, Freya M Shearer
BACKGROUND: Japanese encephalitis (JE) is one of the most significant aetiological agents of viral encephalitis in Asia. This medically important arbovirus is primarily spread from vertebrate hosts to humans by the mosquito vector Culex tritaeniorhynchus. Knowledge of the contemporary distribution of this vector species is lacking, and efforts to define areas of disease risk greatly depend on a thorough understanding of the variation in this mosquito's geographical distribution. RESULTS: We assembled a contemporary database of Cx...
March 16, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28302072/imported-arboviral-infections-in-italy-july-2014-october-2015-a-national-reference-laboratory-report
#4
Claudia Fortuna, Maria Elena Remoli, Caterina Rizzo, Eleonora Benedetti, Cristiano Fiorentini, Antonino Bella, Claudio Argentini, Francesca Farchi, Concetta Castilletti, Maria Rosaria Capobianchi, Lorenzo Zammarchi, Alessandro Bartoloni, Nadia Zanchetta, Maria Rita Gismondo, Luca Ceccherini Nelli, Giustina Vitale, Franco Baldelli, Pierlanfranco D'Agaro, Giuseppe Sodano, Giovanni Rezza, Giulietta Venturi
BACKGROUND: Imported cases of infections due to Dengue (DENV) and Chikungunya (CHIKV) viruses and, more recently, Zika virus (ZIKV) are commonly reported among travelers returning from endemic regions. In areas where potentially competent vectors are present, the risk of autochthonous transmission of these vector-borne pathogens is relatively high. Laboratory surveillance is crucial to rapidly detect imported cases in order to reduce the risk of transmission. This study describes the laboratory activity performed by the National Reference Laboratory for Arboviruses (NRLA) at the Italian National Institute of Health in the period from July 2014 to October 2015...
March 16, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28301568/toxicity-of-spinosad-to-temephos-resistant-aedes-aegypti-populations-in-brazil
#5
Luciana Dos Santos Dias, Maria de Lourdes da Graça Macoris, Maria Teresa Macoris Andrighetti, Vanessa Camargo Garbeloto Otrera, Adriana Dos Santos Dias, Luiz Guilherme Soares da Rocha Bauzer, Cynara de Melo Rodovalho, Ademir Jesus Martins, José Bento Pereira Lima
The mosquito Aedes aegypti is the primary vector of different arboviruses and represents a major public health problem. Several Brazilian populations of Ae. aegypti have developed resistance to temephos, the most used organophosphate larvicide. New tools which are less harmful to the environment and safer for humans are becoming increasingly important to control this insect vector. Spinosad, an aerobic fermentation product of a soil actinobacteria, has a favorable environmental profile. It presents selective insecticide properties, a mechanism of action that differs from those of many synthetic chemical insecticides...
2017: PloS One
https://www.readbyqxmd.com/read/28294048/computer-aided-structure-based-drug-design-approaches-for-the-discovery-of-new-anti-chikv-agents
#6
Surender Singh Jadav, Barij Nayan Sinha, Rolf Hilgenfeld, Venkatesan Jayaprakash
BACKGROUND: Chikungunya is a viral infection caused by Chikungunya virus (CHIKV), an arbovirus transmitted through mosquito (Aedes aegypti and Aedes albopictus) bite. The virus from sylvatic cycle in Africa mutated to new vector adaptation and became one of the major emerging and re-emerging viral infections in the past decade, affecting more than 40 countries. Efforts are being made by many researches to develop means to prevent and control the infection through vaccines and vector control strategy...
March 9, 2017: Current Computer-aided Drug Design
https://www.readbyqxmd.com/read/28286701/first-report-of-the-east-central-south-african-genotype-of-chikungunya-virus-in-rio-de-janeiro-brazil
#7
Thiara Manuele Alves Souza, Elzinandes Leal Azeredo, Jessica Badolato-Corrêa, Paulo Vieira Damasco, Carla Santos, Fabienne Petitinga-Paiva, Priscila Conrado Guerra Nunes, Luciana Santos Barbosa, Márcio Costa Cipitelli, Thais Chouin-Carneiro, Nieli Rodrigues Costa Faria, Rita Maria Ribeiro Nogueira, Fernanda de Bruycker-Nogueira, Flavia Barreto Dos Santos
BACKGROUND: Chikungunya virus (CHIKV) is an arbovirus that causes an acute febrile syndrome with a severe and debilitating arthralgia. In Brazil, the Asian and East-Central South African (ECSA) genotypes are circulating in the north and northeast of the country, respectively. In 2015, the first autochthonous cases in Rio de Janeiro, Brazil were reported but until now the circulating strains have not been characterized. Therefore, we aimed here to perform the molecular characterization and phylogenetic analysis of CHIKV strains circulating in the 2016 outbreak occurred in the municipality of Rio de Janeiro...
February 14, 2017: PLoS Currents
https://www.readbyqxmd.com/read/28286698/-i-aedes-aegypti-i-control-through-modernized-integrated-vector-management
#8
Laith Yakob, Sebastian Funk, Anton Camacho, Oliver Brady, W John Edmunds
INTRODUCTION: In the context of the ongoing, unprecedented Zika virus outbreak in the Americas, the World Health Organization has expressed its support for developing and up-scaling three novel approaches to controlling the Aedes aegypti mosquito: the Sterile Insect Technique (SIT), the Release of Insects carrying Dominant Lethal genes (RIDL) and the release of Wolbachia-infected mosquitoes. Whereas the former two approaches are temporary insect population suppression strategies, Wolbachia infection is a self-sustaining, invasive strategy that uses inherited endosymbiotic bacteria to render natural mosquito populations arbovirus resistant...
January 30, 2017: PLoS Currents
https://www.readbyqxmd.com/read/28285920/wide-scale-analysis-of-protein-expression-in-head-and-thorax-of-aedes-albopictus-females
#9
I Iovinella, B Caputo, A Della Torre, F R Dani
The recently available genome of Aedes albopictus - the most worldwide-spread human arbovirus vector - has revealed a large genome repertory and a great plasticity which are believed to have contributed to the species success as an invasive species and opened the way to genomic, transcriptomic and proteomic studies. We carried out the first wide-scale quantitative proteomic analysis of Ae. albopictus female head and thorax by means of a 'shotgun' approach based on nano liquid chromatography-high resolution mass spectrometry associated to protein Label Free Quantification (LFQ) which allows to assess differences in protein expression between tissues and different physiological stages...
March 9, 2017: Journal of Insect Physiology
https://www.readbyqxmd.com/read/28278416/arboviral-diseases-and-malaria-in-australia-2013-14-annual-report-of-the-national-arbovirus-and-malaria-advisory-committee
#10
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/28267609/the-culicoides-sonorensis-inhibitor-of-apoptosis-1-protein-protects-mammalian-cells-from-apoptosis-induced-by-infection-with-african-horse-sickness-virus-and-bluetongue-virus
#11
Elaine Vermaak, Francois F Maree, Jacques Theron
African horse sickness virus (AHSV) and bluetongue virus (BTV) are arboviruses of the genus Orbivirus that are transmitted to their vertebrate hosts by Culicoides biting midges. These orbiviruses exhibit lytic infection (apoptosis) in mammalian cells, but cause persistent infection with no cytopathic effects in Culicoides sonorensis cells. Although regulation of apoptosis could thus be integral for establishing persistent virus infection in midge cells, nothing is known about the presence and function of apoptosis pathways in Culicoides midges and their derived cell lines...
March 4, 2017: Virus Research
https://www.readbyqxmd.com/read/28267608/analysis-of-the-mirna-profile-in-c6-36-cells-persistently-infected-with-dengue-virus-type-2
#12
Rodolfo Gamaliel Avila-Bonilla, Martha Yocupicio-Monroy, Laurence A Marchat, Mónica A De Nova-Ocampo, Rosa María Del Ángel, Juan Santiago Salas-Benito
Dengue virus (DENV) is the most important arbovirus in the world; DENV is transmitted by the Aedes genus of mosquitoes and can establish a life-long persistent infection in mosquitoes. However, the exact mechanism by which persistent infection is established remains unknown. In this study the differential expression of miRNAs was analysed by deep sequencing and RT-qPCR using a previously established C6/36-HT cell line persistently infected with DENV 2 (C6-L) as a model. miR-927, miR-87, miR-210, miR-2a-3p, miR-190 and miR-970 were up-regulated, whereas miR-252, miR-263a-3p, miR-92b, miR-10-5p miR-9a-5p, miR-9a-1, miR-124, miR-286a and miR-286b were down-regulated in C6-L cells compared with C6/36 cells acutely infected with the same virus or mock-infected cells...
March 4, 2017: Virus Research
https://www.readbyqxmd.com/read/28265108/-confirmed-dengue-chikungunya-and-zika-cases-during-the-period-2014-to-2016-in-barcelona-spain
#13
Roser González, Esteve Camprubí, Lidia Fernández, Joan Pau Millet, Víctor Peracho, Pilar Gorrindo, Ingrid Avellanés, Arancha Romero, Joan A Caylà
OBJECTIVE: Arbovirus infections are a group of diseases whose incidence is increasing and that entail an important problem for public health. The aim of this study was to describe detected cases of arbovirosis in Barcelona, and surveillance and control actions performed in order to reduce the risk of transmission. METHODS: Descriptive cross-sectional study of confirmed dengue, chikungunya and Zika cases in Barcelona during 2014-2016 (1st trimester). Suspected cases detected in the city were notified to the Epidemiology Department of the Barcelona Public Health Agency, where an epidemiological survey is undertaken and, if appropriate, Urban Pests Surveillance and Control Department is contacted...
March 7, 2017: Revista Española de Salud Pública
https://www.readbyqxmd.com/read/28262484/the-antiviral-rna-interference-response-provides-resistance-to-lethal-arbovirus-infection-and-vertical-transmission-in-caenorhabditis-elegans
#14
Don B Gammon, Takao Ishidate, Lichao Li, Weifeng Gu, Neal Silverman, Craig C Mello
The recent discovery of the positive-sense single-stranded RNA (ssRNA) Orsay virus (OV) as a natural pathogen of the nematode Caenorhabditis elegans has stimulated interest in exploring virus-nematode interactions. However, OV infection is restricted to a small number of intestinal cells, even in nematodes defective in their antiviral RNA interference (RNAi) response, and is neither lethal nor vertically transmitted. Using a fluorescent reporter strain of the negative-sense ssRNA vesicular stomatitis virus (VSV), we show that microinjection of VSV particles leads to a dose-dependent, muscle tissue-tropic, lethal infection in C...
March 20, 2017: Current Biology: CB
https://www.readbyqxmd.com/read/28258352/blood-feeding-status-gonotrophic-cycle-and-survivorship-of-aedes-stegomyia-aegypti-l-diptera-culicidae-caught-in-churches-from-merida-yucatan-mexico
#15
C M Baak-Baak, A Ulloa-Garcia, N Cigarroa-Toledo, J C Tzuc Dzul, C Machain-Williams, O M Torres-Chable, J C Navarro, J E Garcia-Rejon
Blood-feeding status, gonotrophic cycle, and survival rates of Aedes (Stegmyia) aegypti (L.) was investigated in catholic churches from Merida, Yucatan. Female Ae. aegypti were caught using backpack aspirator during 25 consecutive days in rainy (2015) and dry season (2016). Blood-feeding status was determined by external examination of the abdomen and classified as unfed, fed, and gravid. Daily changes in the parous-nulliparous ratio were recorded, and the gonotrophic cycle length was estimated by a time series analysis...
March 3, 2017: Neotropical Entomology
https://www.readbyqxmd.com/read/28254965/complete-genome-sequences-of-two-chikungunya-viruses-isolated-in-the-central-african-republic-in-the-1970s-and-1980s
#16
Vianney Tricou, Marion Desdouits, Emmanuel Nakouné, Antoine Gessain, Mirdad Kazanji, Nicolas Berthet
Some arboviruses threaten human global health with potentially explosive emergence. Analysis of whole-genome sequences of decades-old isolates might contribute to the understanding of the complex dynamics which drive their circulation and emergence. Here, we report the whole-genome sequences of two Chikungunya viruses isolated in the Central African Republic in the 1970s and 1980s.
March 2, 2017: Genome Announcements
https://www.readbyqxmd.com/read/28254583/insecticide-susceptibility-status-and-major-detoxifying-enzymes-activity-in-aedes-albopictus-skuse-vector-of-dengue-and-chikungunya-in-northern-part-of-west-bengal-india
#17
Minu Bharati, Dhiraj Saha
Mosquitoes belonging to Aedes genus, Aedes aegypti and Aedes albopictus transmit many globally important arboviruses including Dengue (DENV) and Chikungunya (CHIKV). Vector control with the use of insecticide remains the suitable method of choice to stop the transmission of these diseases. However, vector control throughout the world is failing to achieve its target results because of the worldwide development of insecticide resistance in mosquitoes. To assess the insecticide susceptibility status of Aedes albopictus from northern part of West Bengal, the susceptibility of eight different Aedes albopictus populations were tested against a commonly used larvicide (temephos) and some adulticides (malathion, deltamethrin and lambda cyhalothrin) along with the major insecticide detoxifying enzymes' activity in them...
February 27, 2017: Acta Tropica
https://www.readbyqxmd.com/read/28250133/mosgctl-7-a-c-type-lectin-protein-mediates-japanese-encephalitis-virus-infection-in-mosquitoes
#18
Ke Liu, Yingjuan Qian, Yong-Sam Jung, Bin Zhou, Ruibing Cao, Ting Shen, Donghua Shao, Jianchao Wei, Zhiyong Ma, Puyan Chen, Huaimin Zhu, Yafeng Qiu
Japanese encephalitis virus (JEV) is an arthropod-borne flavivirus prevalent in Asia and the Western Pacific, and is the leading cause of viral encephalitis. JEV is maintained in a transmission cycle between mosquitoes and vertebrate hosts, but the molecular mechanisms by which the mosquito vector participates in transmission are unclear. We investigated the expression of all C-type lectins during JEV infection in Aedes aegypti. C-type lectin mosGCTL-7 (AAEL002524) was significantly up-regulated by JEV infection and facilitated infection in vivo and in vitro...
March 1, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28248203/chikungunya-virus-epidemiology-replication-disease-mechanisms-and-prospective-intervention-strategies
#19
REVIEW
Laurie A Silva, Terence S Dermody
Chikungunya virus (CHIKV), a reemerging arbovirus, causes a crippling musculoskeletal inflammatory disease in humans characterized by fever, polyarthralgia, myalgia, rash, and headache. CHIKV is transmitted by Aedes species of mosquitoes and is capable of an epidemic, urban transmission cycle with high rates of infection. Since 2004, CHIKV has spread to new areas, causing disease on a global scale, and the potential for CHIKV epidemics remains high. Although CHIKV has caused millions of cases of disease and significant economic burden in affected areas, no licensed vaccines or antiviral therapies are available...
March 1, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28241146/prophage-wo-genes-recapitulate-and-enhance-wolbachia-induced-cytoplasmic-incompatibility
#20
Daniel P LePage, Jason A Metcalf, Sarah R Bordenstein, Jungmin On, Jessamyn I Perlmutter, J Dylan Shropshire, Emily M Layton, Lisa J Funkhouser-Jones, John F Beckmann, Seth R Bordenstein
The genus Wolbachia is an archetype of maternally inherited intracellular bacteria that infect the germline of numerous invertebrate species worldwide. They can selfishly alter arthropod sex ratios and reproductive strategies to increase the proportion of the infected matriline in the population. The most common reproductive manipulation is cytoplasmic incompatibility, which results in embryonic lethality in crosses between infected males and uninfected females. Females infected with the same Wolbachia strain rescue this lethality...
March 9, 2017: Nature
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