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Chikungunya

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https://www.readbyqxmd.com/read/29329394/analysis-of-the%C3%A2-aedes-albopictus%C3%A2-c6-36-genome-provides-insight-into-cell-line-utility-for-viral-propagation
#1
Jason R Miller, Sergey Koren, Kari A Dilley, Vinita Puri, David M Brown, Derek M Harkins, Françoise Thibaud-Nissen, Benjamin Rosen, Xiao-Guang Chen, Zhijian Tu, Igor V Sharakhov, Maria V Sharakhova, Robert Sebra, Timothy B Stockwell, Nicholas H Bergman, Granger G Sutton, Adam M Phillippy, Peter M Piermarini, Reed S Shabman
Background: The 50-year old Aedes albopictus C6/36 cell line is a resource for the detection, amplification, and analysis of mosquito-borne viruses including Zika, dengue, and chikungunya. The cell line is derived from an unknown number of larvae from an unspecified strain of Aedes albopictus mosquitoes. Toward improved utility of the cell line for research in virus transmission, we present an annotated assembly of the C6/36 genome. Results: The C6/36 genome assembly has the largest contig N50 (3...
January 10, 2018: GigaScience
https://www.readbyqxmd.com/read/29325169/severe-sepsis-and-septic-shock-associated-with-chikungunya-fever-in-an-adolescent
#2
Pradeep Kumar Sharma, Maneesh Kumar, Neha Bhandari, Anand Kushwaha
Chikungunya is usually a benign disease, and little is known on the occurrence of severe clinical complications. We describe a 12-year-old boy with rapid onset septic shock and multi-organ failure associated with chikungunya fever. Severe sepsis and septic shock can be associated with chikungunya.
January 6, 2018: Journal of Tropical Pediatrics
https://www.readbyqxmd.com/read/29324725/west-nile-virus-and-other-nationally-notifiable-arboviral-diseases-united-states-2016
#3
Alexis Burakoff, Jennifer Lehman, Marc Fischer, J Erin Staples, Nicole P Lindsey
Arthropod-borne viruses (arboviruses) are transmitted to humans primarily through the bites of infected mosquitoes and ticks. West Nile virus (WNV) is the leading cause of domestically acquired arboviral disease in the continental United States (1,2). Other arboviruses, including La Crosse, Powassan, Jamestown Canyon, St. Louis encephalitis, and eastern equine encephalitis viruses, cause sporadic cases of disease and occasional outbreaks. This report summarizes surveillance data reported to CDC for 2016 for nationally notifiable arboviruses...
January 12, 2018: MMWR. Morbidity and Mortality Weekly Report
https://www.readbyqxmd.com/read/29322519/inactivation-of-chikungunya-virus-in-blood-components-treated-with-amotosalen-ultraviolet-a-light-or-amustaline-glutathione
#4
Andrew Laughhunn, Yan-Jang S Huang, Dana L Vanlandingham, Marion C Lanteri, Adonis Stassinopoulos
BACKGROUND: Chikungunya virus, a mosquito-borne arbovirus, often co-circulates with the Zika, dengue, and yellow fever viruses in Aedes mosquito-infested areas where cases of arbovirus transfusion-transmitted infections have been reported. Building on past experience to help maintain the availability of safe components during major outbreaks of chikungunya virus in La Reunion, Italy, and Thailand and of Zika virus in the Pacific, the Caribbean, and the Americas, pathogen inactivation is a mitigation strategy to reduce the risk of transfusion-transmitted infection...
January 10, 2018: Transfusion
https://www.readbyqxmd.com/read/29322275/outcome-of-polymerase-chain-reaction-pcr-analysis-in-100-suspected-cases-of-infectious-uveitis
#5
Ranju Kharel Sitaula, M K Janani, H N Madhavan, Jyotirmay Biswas
BACKGROUND: Polymerase chain reaction (PCR) analysis is an important tool in the diagnosis of infectious uveitis. A retrospective, interventional study of PCR analysis of ocular fluid in suspected infectious uveitis cases between January 2014 to July 2016 was done. Nested, real-time and broad range PCR was performed for detection of the genome of Mycobacterium tuberculosis, herpes virus family, Chikungunya virus, Toxoplasma gondii, fungus, eubacterium and propionibacterium acne. RESULTS: Total of 100 cases included, mean age was 39...
January 10, 2018: Journal of Ophthalmic Inflammation and Infection
https://www.readbyqxmd.com/read/29319426/dengue-hemorrhagic-fever-virus-in-saudi-arabia-a-review
#6
Jaffar A Al-Tawfiq, Ziad A Memish
Dengue fever is a global disease with a spectrum of clinical manifestation ranging from mild febrile disease to a severe disease in the form of dengue hemorrhagic fever and dengue shock syndrome. Dengue virus is one viral hemorrhagic fever that exists in the Kingdom of Saudi Arabia in addition to Alkhurma (Alkhurma) Hemorrhagic Fever, Chikungunya virus, Crimean-Congo Hemorrhagic Fever, and Rift Valley Fever. The disease is limited to the Western and South-western regions of Saudi Arabia, where Aedes aegypti exists...
January 10, 2018: Vector Borne and Zoonotic Diseases
https://www.readbyqxmd.com/read/29316869/fournier-s-gangrene-a-rare-manifestation-of-chikungunya-fever
#7
Apoorv Goel, Shalabh Gupta, Ayush Agarwal, Nitin Shiwach, Vishal Chawda, Tripta S Bhagat
No abstract text is available yet for this article.
January 2018: Tropical Doctor
https://www.readbyqxmd.com/read/29314584/qsar-analysis-of-plant-derived-compounds-with-larvicidal-activity-against-zika-aedes-aegypti-diptera-culicidae-vector-using-freely-available-descriptors
#8
Laura M Saavedra, Gustavo P Romanelli, Pablo R Duchowicz
BACKGROUND: We develop a QSAR model for predicting the larvicidal activity of 60 plant-derived molecules against Aedes aegypti L. (Diptera: Culicidae), vector of several diseases such as, dengue, yellow fever, chikungunya and Zika virus. The balanced subsets method (BSM) based on k-means cluster analysis (k-MCA) is employed to split the data set. The replacement method (RM) variable subset selection technique coupled with multivariable linear regression (MLR) proves to be successful for exploring 18,326 molecular descriptors and fingerprints calculated with PaDEL, Mold2 and EPI Suite open-source software...
January 4, 2018: Pest Management Science
https://www.readbyqxmd.com/read/29314033/amustaline-s-303-treatment-inactivates-high-levels-of-chikungunya-virus-in-red-blood-cell-components
#9
M Aubry, A Laughhunn, F Santa Maria, M C Lanteri, A Stassinopoulos, D Musso
BACKGROUND AND OBJECTIVES: Chikungunya virus (CHIKV) infections have been reported in all continents, and the potential risk for CHIKV transfusion-transmitted infections (TTIs) was demonstrated by the detection of CHIKV RNA-positive donations in several countries. TTIs can be reduced by pathogen inactivation (PI) of blood products. In this study, we evaluated the efficacy of amustaline and glutathione (S-303/GSH) to inactivate CHIKV in red-blood-cell concentrates (RBCs). MATERIAL AND METHODS: Red-blood-cells were spiked with high level of CHIKV...
January 4, 2018: Vox Sanguinis
https://www.readbyqxmd.com/read/29313469/reptiles-and-amphibians-as-potential-reservoir-hosts-of-chikungunya-virus
#10
Angela M Bosco-Lauth, Airn E Hartwig, Richard A Bowen
Chikungunya virus is an emerging arbovirus of significant human-health concern. Little is known about its sylvatic cycle, including whether ectothermic vertebrates are permissive to infection. In this study, individuals from ten species of reptiles and amphibians were inoculated with chikungunya virus and samples of blood were tested to characterize viremia and seroconversion. Viremia was not detected in cane toads, house geckos, or American alligators, but most of the green iguanas, red-eared sliders, ball and Burmese pythons, leopard frogs, Texas toads, and garter snakes developed viremia...
January 8, 2018: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/29308412/the-identification-of-risk-factors-for-chronic-chikungunya-arthralgia-in-grenada-west-indies-a-cross-sectional-cohort-study
#11
Claire J Heath, Jason Lowther, Trevor P Noël, Idis Mark-George, Derek B Boothroyd, George Mitchell, Calum MacPherson, A Desiree LaBeaud
Background: Chikungunya virus (CHIKV) is a re-emerging arboviral pathogen. In 2014, an explosive CHIKV outbreak occurred in Grenada, West Indies, infecting approximately 60% of the population. In approximately 50% of cases, CHIKV infection transitions to painful arthralgia that can persist for years. Elucidation of the risk factors for chronic disease is imperative to the development of effective risk management strategies and specific therapeutics. Methods: We conducted a cross-sectional study of 240 people who were tested for CHIKV during the outbreak...
January 2018: Open Forum Infectious Diseases
https://www.readbyqxmd.com/read/29306785/structure-function-insights-into-chikungunya-virus-capsid-protein-small-molecules-targeting-capsid-hydrophobic-pocket
#12
Rajesh Sharma, Pooja Kesari, Pravindra Kumar, Shailly Tomar
The crystal structure of chikungunya (CHIKV) virus capsid protease domain has been determined at 2.2Å. Structure reveals a chymotrypsin-like protease fold with a conserved hydrophobic pocket in CHIKV capsid protein (CP) for interaction with the cytoplasmic tail of E2 (cdE2) similar to the capsid protein of other alphaviruses. Molecular contacts between CP-cdE2 were determined by fitting structures of CHIKV CP and cdE2 into the cryo-EM map of Venezuelan equine encephalitis virus (VEEV). Binding of (S)-(+)-Mandelic acid (MDA) and Ethyl 3-aminobenzoate (EAB) to the hydrophobic pocket of CP was evaluated by molecular docking...
January 4, 2018: Virology
https://www.readbyqxmd.com/read/29305550/comparison-of-four-serological-methods-and-two-rt-pcr-assays-for-diagnosis-and-surveillance-of-zika
#13
Angel Balmaseda, Jose Victor Zambrana, Damaris Collado, Nadezna Garcia, Saira Saborío, Douglas Elizondo, Juan Carlos Mercado, Karla Gonzalez, Cristhiam Cerpas, Andrea Nuñez, Davide Corti, Jesse J Waggoner, Guillermina Kuan, Raquel Burger-Calderon, Eva Harris
Zika virus (ZIKV) is a mosquito-borne flavivirus that is responsible for recent explosive epidemics in the Americas. Notably, ZIKV infection during pregnancy has been found to cause congenital birth defects, including microcephaly, and ZIKV has been associated with Guillain Barré Syndrome in adults. Diagnosis and surveillance of Zika in the Americas have been challenging due to similar clinical manifestations and extensive antibody cross-reactivity with endemic flaviviral diseases, like dengue. We evaluated four serological and two RT-PCR methods in acute (mean day 1...
January 5, 2018: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/29305089/how-do-virus-mosquito-interactions-lead-to-viral-emergence
#14
REVIEW
Claudia Rückert, Gregory D Ebel
Arboviruses such as West Nile, Zika, chikungunya, dengue, and yellow fever viruses have become highly significant global pathogens through unexpected, explosive outbreaks. While the rapid progression and frequency of recent arbovirus outbreaks is associated with long-term changes in human behavior (globalization, urbanization, climate change), there are direct mosquito-virus interactions which drive shifts in host range and alter virus transmission. This review summarizes how virus-mosquito interactions are critical for these viruses to become global pathogens at molecular, physiological, evolutionary, and epidemiological scales...
January 2, 2018: Trends in Parasitology
https://www.readbyqxmd.com/read/29298700/evidence-for-multiple-insecticide-resistance-in-urban-aedes-albopictus-populations-in-southern-china
#15
Yiji Li, Jiabao Xu, Daibin Zhong, Hong Zhang, Wenqiang Yang, Guofa Zhou, Xinghua Su, Yang Wu, Kun Wu, Songwu Cai, Guiyun Yan, Xiao-Guang Chen
BACKGROUND: Aedes albopictus (Skuse) is an invasive mosquito that has become an important vector of chikungunya, dengue and Zika viruses. In the absence of specific antiviral therapy or a vaccine, vector management is the sole method available for reducing Aedes-induced disease morbidity. Determining the resistance status of Ae. albopictus to insecticides and exploring the resistance mechanisms is essential for future vector control planning. METHODS: Aedes albopictus larvae and pupae were sampled from six sites (two sites each from urban, suburban and rural) in Guangzhou...
January 3, 2018: Parasites & Vectors
https://www.readbyqxmd.com/read/29296705/zika-and-chikungunya-virus-infections-in-hematopoietic-stem-cell-transplant-recipients-and-oncohematological-patients
#16
Clarisse Martins Machado, Bárbara Brito de Souza Pereira, Alvina Clara Felix, Maria Carolina Oliveira, Luiz Guilherme Darrigo, Mair Pedro de Souza, Eduardo José de Alencar Paton, Fabia Neves, Vergilio Rensi Colturato, Belinda Pinto Simoes
Aedes mosquitoes are well adapted in domestic environments and widespread in tropical regions. Since 2015, Brazil has been experiencing a triple epidemic of dengue (DENV), chikungunya (CHKV), and Zika (ZIKV) viruses. The last 2 viruses are likely following the path of DENV, which has been endemic in most parts of the country since the 1980s. Given this triple epidemic, we proposed a prospective and collaborative study to assess the prevalence, morbidity, and mortality of DENV, CHKV, and ZIKV infections in hematopoietic stem cell transplant (HSCT) recipients and oncohematological patients...
April 11, 2017: Blood Advances
https://www.readbyqxmd.com/read/29291234/a-clinical-report-on-mixed-infection-of-malaria-dengue-and-chikungunya-from-new-delhi-india
#17
Mohd Abdullah, Ayesha Tazeen, Malik Hisamuddin, Irshad H Naqvi, Hirday N Verma, Anwar Ahmed, Shama Parveen
Arthropod-borne infections like malaria, dengue and chikungunya fever are transmitted by mosquitoes. The present report describes an unusual case of mixed infection with malaria, dengue and chikungunya viruses in a 21 year old male patient from New Delhi, India during monsoon season of 2016. The malarial fever was diagnosed by thin slide microscopy and antigen test. Chikungunya virus IgM was detected in the sample by the card test. Dengue and chikungunya viruses were further confirmed by RT-PCR for CprM and E1 gene respectively...
December 2017: Virusdisease
https://www.readbyqxmd.com/read/29290037/n-substituted-methyl-maleamates-as-larvicidal-compounds-against-aedes-aegypti-diptera-culicidae
#18
Laura Harburguer, Paula V Gonzalez, Paola Gonzalez Audino, Eduardo Zerba, Héctor Masuh
Severe human arboviral diseases can be transmitted by the mosquito Aedes aegypti (L.), including dengue, chikungunya, zika, and yellow fever. The use of larvicides in containers that can result as potential breeding places and cannot be eliminated is the main alternative in control programs. However, their continuous and widespread use caused an increase in insecticide-resistant populations of this mosquito. The aim of this study was to evaluate the effect of three N-substituted methyl maleamates as larvicides on Ae...
December 30, 2017: Parasitology Research
https://www.readbyqxmd.com/read/29287308/chikungunya-virus-arthritis-implications-of-acute-and-chronic-inflammation-mechanisms-on-patient-management
#19
REVIEW
Ali Zaid, Patrick Gérardin, Adam Taylor, Helen Mostafavi, Denis Malvy, Suresh Mahalingam
In the past decade, arboviruses - arthropod-borne viruses - have been the focus of public health institutions worldwide following a spate of devastating outbreaks. Chikungunya virus (CHIKV), an arbovirus that belongs to the alphavirus genus, is a re-emerging arthritogenic virus that has caused explosive outbreaks since 2006, notably in the Reunion Island, and more recently in the Caribbean, South America, India and South-East Asia. The severity of arthritic disease caused by CHIKV has prompted public health authorities of affected countries to develop specific guidelines to tackle this pathogen...
December 29, 2017: Arthritis & Rheumatology
https://www.readbyqxmd.com/read/29285673/detection-isolation-and-characterization-of-chikungunya-viruses-associated-with-the-pakistan-outbreak-of-2016-2017
#20
Si-Qing Liu, Xiao Li, Ya-Nan Zhang, Ai-Li Gao, Cheng-Lin Deng, Jun-Hua Li, Shoukat Jehan, Nadia Jamil, Fei Deng, Hongping Wei, Bo Zhang
The chikungunya virus (CHIKV) is a mosquito-transmitted alphavirus, which has infected millions of people in Africa, Asia, Americas, and Europe since it reemerged in India and Indian Ocean regions in 2005-2006. Starting in the middle of November 2016, CHIKV has been widely spread, and more than 4,000 cases of infections in humans were confirmed in Pakistan. Here, we report the first isolation and characterization of CHIKV from the Pakistan outbreak. Eight CHIKV strains were newly isolated from human serum samples using a cell culture procedure...
December 21, 2017: Virologica Sinica
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