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https://www.readbyqxmd.com/read/29149964/chikungunya-infection-in-solid-organ-transplant-recipients
#1
E S Girão, B G Rodrigues Dos Santos, E S do Amaral, P E G Costa, K B Pereira, A H de Araujo Filho, E B Hyppolito, M U Mota, L C B F Marques, C M Costa de Oliveira, S L da Silva, J H P Garcia, P F C B C Fernandes
BACKGROUND: Chikungunya virus (CHIKV) is an emerging mosquito-borne disease that causes acute febrile polyarthralgia and arthritis. CHIKV has spread rapidly to the Americas and, in Brazil, autochthonous cases are increasingly been reported. Solid organ transplant (SOT) recipients who travel to or live in CHIKV endemic areas are under high risk of acquiring the disease. Few data exist regarding the clinical characteristics of CHIKV infections in this population. We report the first case series of CHIKV infection in SOT recipients...
November 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/29149298/vector-borne-diseases-and-climate-change-a-european-perspective
#2
Jan C Semenza, Jonathan E Suk
Climate change has already impacted the transmission of a wide-range of vector-borne diseases in Europe, and it will continue to do so in the coming decades. Climate change has been implicated in the observed shift of ticks to elevated altitudes and latitudes, notably including the Ixodes ricinus tick species which is a vector for Lyme borreliosis and tick-borne encephalitis. Climate change is also thought to have been a factor in the expansion of other important disease vectors in Europe: Aedes albopictus (the Asian tiger mosquito), which transmits diseases such as Zika, dengue, and chikungunya, and Phlebotomus sandfly species, which transmits diseases including Leishmaniasis...
November 15, 2017: FEMS Microbiology Letters
https://www.readbyqxmd.com/read/29149175/the-introduction-of-dengue-follows-transportation-infrastructure-changes-in-the-state-of-acre-brazil-a-network-based-analysis
#3
Raquel Martins Lana, Marcelo Ferreira da Costa Gomes, Tiago França Melo de Lima, Nildimar Alves Honório, Cláudia Torres Codeço
Human mobility, presence and passive transportation of Aedes aegypti mosquito, and environmental characteristics are a group of factors which contribute to the success of dengue spread and establishment. To understand this process, we assess data from dengue national and municipal basins regarding population and demographics, transportation network, human mobility, and Ae. aegypti monitoring for the Brazilian state of Acre since the first recorded dengue case in the year 2000 to the year 2015. During this period, several changes in Acre's transport infrastructure and urbanization have been started...
November 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29148371/diagnostic-accuracy-of-parameters-for-zika-and-dengue-virus-infections-singapore
#4
Hanley J Ho, Joshua G X Wong, Win Mar Kyaw, David C Lye, Yee Sin Leo, Angela Chow
Singapore experienced its first documented Zika virus outbreak in 2016. We identified clinical and laboratory parameters that increase the probability for Zika or dengue virus infection. Early during the illness, combinations of key parameters obtained through clinical assessment and hematologic tests can help distinguish between these infections.
December 2017: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/29147793/pharmacophoric-characteristics-of-dengue-virus-ns2b-ns3pro-inhibitors-a-systematic-review-of-the-most-promising-compounds
#5
REVIEW
Camyla Alves Leonel, William Gustavo Lima, Michelli Dos Santos, Ariane Coelho Ferraz, Alex Gutterres Taranto, José Carlos de Magalhães, Luciana Lara Dos Santos, Jaqueline Maria Siqueira Ferreira
Dengue virus (DENV) infection can lead to a wide range of clinical manifestations, including fatal hemorrhagic complications. There is a need to find effective pharmacotherapies to treat this disease due to the lack of specific immunotherapies and antiviral drugs. That said, the DENV NS2B/NS3pro protease complex is essential in both the viral multiplication cycle and in disease pathogenesis, and is considered a promising target for new antiviral therapies. Here, we performed a systematic review to evaluate the pharmacophoric characteristics of promising compounds against NS2B/NS3pro reported in the past 10 years...
November 16, 2017: Archives of Virology
https://www.readbyqxmd.com/read/29147722/-dengue-fever-symptoms-epidemiology-entomology-pathogen-diagnosis-and-prevention
#6
D Wiemer, H Frickmann, A Krüger
Dengue infections are among the most frequent causes of febrile disease in tropical climates. Infections are caused by a flavivirus transmitted by the Aedes mosquito. Aedes aegypti mosquitos are the main transmitters of Dengue viruses. Since these insects are both diurnal and container breeders, particular prevention and control measures are required. Symptom severity varies and can range from a mild, flu-like clinical picture to severe hemorrhage and shock. The most common symptoms experienced by travelers include fever, muscular pain, headaches and skin rash...
November 16, 2017: Der Hautarzt; Zeitschrift Für Dermatologie, Venerologie, und Verwandte Gebiete
https://www.readbyqxmd.com/read/29146940/development-and-physiological-effects-of-an-artificial-diet-for-wolbachia-infected-aedes-aegypti
#7
Heverton Leandro Carneiro Dutra, Silvia Lomeu Rodrigues, Simone Brutman Mansur, Sofia Pimenta de Oliveira, Eric Pearce Caragata, Luciano Andrade Moreira
The endosymbiotic bacterium Wolbachia spreads rapidly through populations of Aedes aegypti mosquitoes, and strongly inhibits infection with key human pathogens including the dengue and Zika viruses. Mosquito control programs aimed at limiting transmission of these viruses are ongoing in multiple countries, yet there is a dearth of mass rearing infrastructure specific to Wolbachia-infected mosquitoes. One example is the lack of a blood meal substitute, which accounts for the Wolbachia-specific physiological changes in infected mosquitoes, that allows the bacterium to spread, and block viral infections...
November 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29146795/advancing-dengue-vaccine-development
#8
Mark B Feinberg, Rafi Ahmed
No abstract text is available yet for this article.
November 17, 2017: Science
https://www.readbyqxmd.com/read/29145490/rnai-screen-reveals-a-role-of-sphk2-in-dengue-virus-mediated-apoptosis-in-hepatic-cell-lines
#9
Atthapan Morchang, Regina Ching Hua Lee, Pa-Thai Yenchitsomanus, Gopinathan Pillai Sreekanth, Sansanee Noisakran, Justin Jang Hann Chu, Thawornchai Limjindaporn
Hepatic dysfunction is a feature of dengue virus (DENV) infection. Hepatic biopsy specimens obtained from fatal cases of DENV infection show apoptosis, which relates to the pathogenesis of DENV infection. However, how DENV induced liver injury is not fully understood. In this study, we aim to identify the factors that influence cell death by employing an apoptosis-related siRNA library screening. Our results show the effect of 558 gene silencing on caspase 3-mediated apoptosis in DENV-infected Huh7 cells. The majority of genes that contributed to apoptosis were the apoptosis-related kinase enzymes...
2017: PloS One
https://www.readbyqxmd.com/read/29145452/behavioral-climatic-and-environmental-risk-factors-for-zika-and-chikungunya-virus-infections-in-rio-de-janeiro-brazil-2015-16
#10
Trevon L Fuller, Guilherme Calvet, Camila Genaro Estevam, Jussara Rafael Angelo, Gbenga J Abiodun, Umme-Aiman Halai, Bianca De Santis, Patricia Carvalho Sequeira, Eliane Machado Araujo, Simone Alves Sampaio, Marco Cesar Lima de Mendonça, Allison Fabri, Rita Maria Ribeiro, Ryan Harrigan, Thomas B Smith, Claudia Raja Gabaglia, Patrícia Brasil, Ana Maria Bispo de Filippis, Karin Nielsen-Saines
The burden of arboviruses in the Americas is high and may result in long-term sequelae with infants disabled by Zika virus infection (ZIKV) and arthritis caused by infection with Chikungunya virus (CHIKV). We aimed to identify environmental drivers of arbovirus epidemics to predict where the next epidemics will occur and prioritize municipalities for vector control and eventual vaccination. We screened sera and urine samples (n = 10,459) from residents of 48 municipalities in the state of Rio de Janeiro for CHIKV, dengue virus (DENV), and ZIKV by molecular PCR diagnostics...
2017: PloS One
https://www.readbyqxmd.com/read/29145171/host-target-based-approaches-against-arboviral-diseases
#11
Rebeca Froes Rocha, Juliana Lemos Del Sarto, Rafael Elias Marques, Vivian Vasconcelos Costa, Mauro Martins Teixeira
In the 20th century, socioeconomic and environmental changes facilitated the reintroduction of mosquitoes in developing cities, resulting in the reintroduction of mosquito-borne viral diseases and the dispersal of their causative agents in a worldwide scale. Recurrent outbreaks of arboviral diseases are being reported, even in regions without a previous history of arboviral disease transmission. Of note, arboviral infections represented approximately 30% of all emerging vector-borne diseases of the last decade...
November 27, 2017: Biological Chemistry
https://www.readbyqxmd.com/read/29142540/clinical-audit-of-dengue-related-deaths-in-2011-mayo-hospital-lahore-pakistan
#12
Somia Iqtadar, Nabeel Akbar, Mehreen Mehmood, Sajid Abaidullah
Background and Objective: Dengue infection has evolved into an epidemic during last few years in Pakistan and has been associated with poor outcomes. Literature with respect to mortality risk factors in Dengue infection is not sufficient. This compelled us to conduct this study to find out major contributory factors to death in patients with dengue viral infection at one of Asia's ancient hospital setting with an aim to recognize complications at earliest and improve case management in future...
September 2017: Pakistan Journal of Medical Sciences Quarterly
https://www.readbyqxmd.com/read/29141913/multiplexed-biomarker-panels-discriminate-zika-and-dengue-virus-infection-in-humans
#13
Guang Song, Hee-Sool Rho, Jianbo Pan, Pedro Ramos, Ki-Jun Yoon, Freddy A Medina, Emily M Lee, Daniel J Eichinger, Guo-Li Ming, Jorge L Muñoz-Jordan, Hengli Tang, Ignacio Pino, Hongjun Song, Jiang Qian, Heng Zhu
Zika virus (ZIKV) and dengue virus (DENV) are closely related flaviviruses that cause widespread, acute febrile illnesses, notably microcephaly for fetuses of infected pregnant women. Detecting the viral cause of these illnesses is paramount to determine risks to patients, counsel pregnant women, and help fight outbreaks. A combined diagnostic algorithm for ZIKV and DENV requires Reverse transcription polymerase chain reaction (RT-PCR) and IgM antibody detection. RT-PCR differentiates between DENV and ZIKV infections during the acute phases of infection, but differentiation based on IgM antibodies is currently nearly impossible in endemic areas...
November 15, 2017: Molecular & Cellular Proteomics: MCP
https://www.readbyqxmd.com/read/29141766/molecular-detection-and-characterization-of-wolbachia-pipientis-from-culex-quinquefasciatus-collected-from-lahore-pakistan
#14
Muhammad Sajjad Sarwar, Nusrat Jahan, Fatima Shahbaz
The gram-negative, pleomorphic endosymbiont Wolbachia is known to infect a large number of insects and other arthropods naturally. This bacterium modifies the host biology, mainly causing reproductive alterations including feminization, death of male, parthenogenesis, and importantly cytoplasmic incompatibility. Wolbachia-induced cytoplasmic incompatibility results in nonviable offspring and vector population suppression. In addition, this bacterium rapidly spreads and propagates within the host population...
October 23, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/29141746/monitoring-and-control-of-aedes-albopictus-a-vector-of-zika-virus-near-residences-of-imported-zika-virus-patients-during-2016-in-south-korea
#15
Kyu-Sik Chang, Gi-Hun Kim, Young-Ran Ha, Eun Kyeong Jeong, Heung-Chul Kim, Terry A Klein, Seung Hwan Shin, Eun Jeung Kim, Seung Jegal, Se Jin Chung, Young-Ran Ju, Young Mee Jee
Zika virus (ZIKV) is an arthropod-borne virus mainly transmitted by Aedes species. A total of nine of the 16 imported ZIKV reported cases during the mosquito season in the Republic of Korea (ROK), following the return of local nationals from foreign ZIKV endemic countries, were surveyed for Aedes albopictus. Surveillance and vector control of Ae. albopictus, a potential vector of ZIKV, and related species are critical for reducing the potential for autochthonous transmission in the ROK. Surveillance and vector control were coordinated by Korean Centers for Disease Control & Prevention (KCDC) and conducted by local health authorities within 200 m of imported ZIKV patients' residences...
November 13, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/29141718/dengue-fever-surveillance-in-india-using-text-mining-in-public-media
#16
Andrea Villanes, Emily Griffiths, Michael Rappa, Christopher G Healey
Despite the improvement in health conditions across the world, communicable diseases remain among the leading mortality causes in many countries. Combating communicable diseases depends on surveillance, preventive measures, outbreak investigation, and the establishment of control mechanisms. Delays in obtaining country-level data of confirmed communicable disease cases, such as dengue fever, are prompting new efforts for short- to medium-term data. News articles highlight dengue infections, and they can reveal how public health messages, expert findings, and uncertainties are communicated to the public...
October 23, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/29141713/resource-use-and-costs-of-dengue-analysis-of-data-from-phase-iii-efficacy-studies-of-a-tetravalent-dengue-vaccine
#17
Hanna El Fezzazi, Marie Branchu, Gabriel Carrasquilla, Punnee Pitisuttithum, Ana Paula Perroud, Carina Frago, Laurent Coudeville
A tetravalent dengue vaccine (CYD-TDV) has recently been approved in 12 countries in southeast Asia and Latin America for individuals aged 9-45 years or 9-60 years (age indication approvals vary by country) living in endemic areas. Data on utilization of medical and nonmedical resources as well as time lost from school and work were collected during the active phase of two phase III efficacy studies performed in 10 countries in the Asia-Pacific region and Latin America (NCT01373281; NCT01374516). We compared dengue-related resource utilization and costs among vaccinated and nonvaccinated participants...
October 16, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/29141337/-epidemiology-of-imported-infectious-diseases-in-china-2013-2016
#18
Y L Wang, X Wang, R Q Ren, L Zhou, W W Tu, D X Ni, Q Li, Z J Feng, Y P Zhang
Objective: To describe the epidemic of imported infectious diseases in China between 2013 and 2016, including the kinds of infectious diseases, affected provinces, source countries and the epidemiological characteristics, and provide scientific information for the prevention and control of imported infectious diseases. Methods: Data of cases of imported infectious diseases in China from 2013 to 2016 were collected from national information reporting system of infectious diseases, Microsoft Excel 2010 and SPSS 18...
November 10, 2017: Zhonghua Liu Xing Bing Xue za Zhi, Zhonghua Liuxingbingxue Zazhi
https://www.readbyqxmd.com/read/29141010/multiple-effects-of-toxins-isolated-from-crotalus-durissus-terrificus-on-the-hepatitis-c-virus-life-cycle
#19
Jacqueline Farinha Shimizu, Carina Machado Pereira, Cintia Bittar, Mariana Nogueira Batista, Guilherme Rodrigues Fernandes Campos, Suely da Silva, Adélia Cristina Oliveira Cintra, Carsten Zothner, Mark Harris, Suely Vilela Sampaio, Victor Hugo Aquino, Paula Rahal, Ana Carolina Gomes Jardim
Hepatitis C virus (HCV) is one of the main causes of liver disease and transplantation worldwide. Current therapy is expensive, presents additional side effects and viral resistance has been described. Therefore, studies for developing more efficient antivirals against HCV are needed. Compounds isolated from animal venoms have shown antiviral activity against some viruses such as Dengue virus, Yellow fever virus and Measles virus. In this study, we evaluated the effect of the complex crotoxin (CX) and its subunits crotapotin (CP) and phospholipase A2 (PLA2-CB) isolated from the venom of Crotalus durissus terrificus on HCV life cycle...
2017: PloS One
https://www.readbyqxmd.com/read/29140541/regulatory-t-cells-in-acute-dengue-viral-infection
#20
Eresha Jayaratne, Dulharie Wijeratne, Samitha Fernando, Achala Kamaladasa, Laksiri Gomes, Ananda Wijewickrama, Graham Stuart Ogg, Gathsaurie Neelika Malavige
Although regulatory T cells (Tregs) have been shown to be expanded in acute dengue, their role in pathogenesis and their relationship to clinical disease severity, and extent of viraemia have not been fully evaluated. The frequency of Tregs was assessed in 56 adult patients with acute dengue, by determining the proportion of FOXP3 expressing CD4(+) CD25(+) T cells (FOXP3+ cells). DENV viral loads were measured by quantitative real time PCR and DENV specific T cell responses were measured by ex vivo IFNγ ELISpot assays to overlapping peptide pools of DENV-NS3, NS1 and NS5...
November 15, 2017: Immunology
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