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https://www.readbyqxmd.com/read/28807053/regulation-of-inflammation-in-japanese-encephalitis
#1
REVIEW
Nils Lannes, Artur Summerfield, Luis Filgueira
BACKGROUND: Uncontrolled inflammatory response of the central nervous system is a hallmark of severe Japanese encephalitis (JE). Although inflammation is necessary to mount an efficient immune response against virus infections, exacerbated inflammatory response is often detrimental. In this context, cells of the monocytic lineage appear to be important forces driving JE pathogenesis. MAIN BODY: Brain-infiltrating monocytes, macrophages and microglia play a major role in central nervous system (CNS) inflammation during JE...
August 14, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/28801087/cause-of-acute-encephalitis-encephalopathy-in-japanese-children-diagnosed-by-a-rapid-and-comprehensive-virological-detection-system-and-differences-in-their-clinical-presentations
#2
Kei Takasawa, Ryuichi Nakagawa, Shigeru Takishima, Kengo Moriyama, Ken Watanabe, Koji Kiyohara, Takeshi Hasegawa, Masahiro Shimohira, Kenichi Kashimada, Norio Shimizu, Tomohiro Morio
BACKGROUND: Acute encephalitis/encephalopathy (AE/E) is a rare and severe complication of common childhood infections; however, a treatment strategy based on clinical and pathological evidence has not been established. METHODS: The clinical data and aetiological results using a rapid and comprehensive virological detection system of 62 Japanese children diagnosed with AE/E from 2010 to 2014 were collected. We assessed clinical differences between causes and effectiveness of our multiplex PCR system to establish a pathogen-based treatment strategy for AE/E...
August 8, 2017: Brain & Development
https://www.readbyqxmd.com/read/28791613/oleic-acid-enhances-dengue-virus-but-not-dengue-virus-like-particle-production-from-mammalian-cells
#3
Suwipa Ramphan, Sathiporn Suksathan, Nitwara Wikan, Puey Ounjai, Kanpong Boonthaworn, Poramate Rimthong, Tapanee Kanjanapruthipong, Suchin Worawichawong, Anan Jongkaewwattana, Nuttaporn Wongsiriroj, Duncan R Smith
Despite the recent introduction of a commercial vaccine, the mosquito-transmitted dengue virus is still a worldwide public health problem. Based on the live attenuated vaccine strategy, the commercial vaccine has a less than optimal protective profile. Virus-like particles (VLPs) offer an attractive alternate vaccination strategy due to the effectively native presentation of epitopes in the absence of any infectious genetic material. However, the production of amounts of VLP in a platform that can support commercial development remains a major obstacle...
August 8, 2017: Molecular Biotechnology
https://www.readbyqxmd.com/read/28789637/perceptions-practices-and-health-seeking-behaviour-constrain-je-aes-interventions-in-high-endemic-district-of-north-india
#4
Sanjay Chaturvedi, Neha Sharma, Manish Kakkar
BACKGROUND: Acute Encephalitis Syndrome (AES) and Japanese Encephalitis (JE) stay as poorly understood phenomena in India. Multiple linkages to determinants such as poverty, socio-economic status, gender, environment, and population distribution, make it a greater developmental issue than just a zoonotic disease. METHODS: A qualitative study was conducted to map knowledge, perceptions and practices of community and health systems level stakeholders. Seventeen interviews with utilizers of AES care, care givers from human and veterinary sectors, Non-governmental Organizations (NGOs), and pig owners and 4 Focused Group Discussions (FGDs) with farmers, community leaders, and students were conducted in an endemic north Indian district-Kushinagar...
August 8, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28774810/preparedness-of-adolescents-departing-from-athens-international-airport-to-africa-or-asia-a-five-year-airport-based-prospective-study
#5
Helena C Maltezou, Androula Pavli, Kalliopi Theodoridou, Eleftherios Bournousouzis, Athanasios Minitsios, Panos Katerelos, Ioanna Lymperi, Maria Theodoridou
BACKGROUND: The number of adolescents who travel has increased. We estimated the preparedness of adolescents (12-18 years) departing from Athens to Africa and Asia. METHODS: An airport-based survey was conducted from 2011 to 2015. RESULTS: Sixty-eight adolescents participated; 27/68 (40%) had the Greek nationality. Their main destinations were the Indian subcontinent (37%) and South-East Asia (32%). Most adolescents planned to stay for <1 month (69%) or for 1-3 months (22%)...
August 1, 2017: Travel Medicine and Infectious Disease
https://www.readbyqxmd.com/read/28770248/expression-of-domain-iii-of-the-envelope-protein-from-gp-78-a-japanese-encephalitis-virus
#6
Sahil Kulkarni, Sandeepan Mukherjee, Krishna Mohan Padmanabha Das, Kaushiki Prabhudesai, Nupur Deshpande, Sushant Karnik, Abhay S Chowdhary, Usha Padmanabhan
Acute encephalitis caused by the Japanese encephalitis virus (JEV) represents a growing epidemic and is a cause for concern in Southeast Asia. JEV is transmitted to humans through the bite of the Culicine mosquito species. The virus genome comprising of an RNA strand also encodes the envelope protein (E) which surrounds the virus. The E protein aids in fusion of virus with the cellular membrane of the host cell with the help of three structurally distinct domains (DI, DII, DIII) that are connected by flexible hinge regions...
June 2017: Virusdisease
https://www.readbyqxmd.com/read/28756236/accuracy-estimation-of-an-indirect-elisa-for-the-detection-of-west-nile-virus-antibodies-in-wild-birds-using-a-latent-class-model
#7
Marco Tamba, Antonino Caminiti, Alice Prosperi, Philippe Desprès, Davide Lelli, Giorgio Galletti, Ana Moreno, Giulia Paternoster, Annalisa Santi, Elio Licata, Sylvie Lecollinet, Luca Gelmini, Gianluca Rugna, Anna Procopio, Antonio Lavazza
West Nile virus (WNV) and Usutu virus (USUV), genus Flavivirus, are members of the Japanese encephalitis virus antigenic complex, and are maintained primarily in an enzootic cycle between mosquitoes and birds. WNV is zoonotic, and poses a threat to public health, especially in relation to blood transfusion. Serosurveillance of wild birds is suitable for early detection of WNV circulation, although concerns remain to be addressed as regards i) the type of test used, whether ELISA, virus neutralization test (VNT), plaque reduction neutralization test (PRNT), ii) the reagents (antigens, revealing antibodies), iii) the different bird species involved, and iv) potential cross-reactions with other Flaviviruses, such as USUV...
July 27, 2017: Journal of Virological Methods
https://www.readbyqxmd.com/read/28755145/mosquito-control-with-green-nanopesticides-towards-the-one-health-approach-a-review-of-non-target-effects
#8
Giovanni Benelli, Filippo Maggi, Roman Pavela, Kadarkarai Murugan, Marimuthu Govindarajan, Baskaralingam Vaseeharan, Riccardo Petrelli, Loredana Cappellacci, Suresh Kumar, Anders Hofer, Mohammad Reza Youssefi, Abdullah A Alarfaj, Jiang-Shiou Hwang, Akon Higuchi
The rapid spread of highly aggressive arboviruses, parasites, and bacteria along with the development of resistance in the pathogens and parasites, as well as in their arthropod vectors, represents a huge challenge in modern parasitology and tropical medicine. Eco-friendly vector control programs are crucial to fight, besides malaria, the spread of dengue, West Nile, chikungunya, and Zika virus, as well as other arboviruses such as St. Louis encephalitis and Japanese encephalitis. However, research efforts on the control of mosquito vectors are experiencing a serious lack of eco-friendly and highly effective pesticides, as well as the limited success of most biocontrol tools currently applied...
July 28, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28754189/progress-and-works-in-progress-update-on-flavivirus-vaccine-development
#9
REVIEW
Matthew H Collins, Stefan W Metz
Most areas of the globe are endemic for at least one flavivirus, putting billions at risk for infection. This diverse group of viral pathogens causes a range of manifestations in humans from asymptomatic infection to hemorrhagic fever to encephalitis to birth defects and even death. Many flaviviruses are transmitted by mosquitos and have expanded in geographic distribution in recent years, with dengue virus being the most prevalent, infecting approximately 400 million people each year. The explosive emergence of Zika virus in Latin America in 2014 refocused international attention on this medically important group of viruses...
July 25, 2017: Clinical Therapeutics
https://www.readbyqxmd.com/read/28753671/self-reported-infections-during-international-travel-and-notifiable-infections-among-returning-international-travellers-sweden-2009-2013
#10
Viktor Dahl, Anders Wallensten
We studied food and water-borne diseases (FWDs), sexually transmitted diseases (STDs), vector-borne diseases (VBDs) and diseases vaccinated against in the Swedish childhood vaccination programme among Swedish international travellers, in order to identify countries associated with a high number of infections. We used the national database for notifiable infections to estimate the number of FWDs (campylobacteriosis, salmonellosis, giardiasis, shigellosis, EHEC, Entamoeba histolytica, yersinosis, hepatitis A, paratyphoid fever, typhoid fever, hepatitis E, listeriosis, cholera), STIs (chlamydia, gonorrhoea and acute hepatitis B), VBDs (dengue fever, malaria, West Nile fever, Japanese encephalitis and yellow fever) and diseases vaccinated against in the Swedish childhood vaccination programme (pertussis, measles, mumps, rubella, diphtheria) acquired abroad 2009-2013...
2017: PloS One
https://www.readbyqxmd.com/read/28748833/identification-and-characterization-of-differentially-expressed-genes-from-human-microglial-cell-samples-infected-with-japanese-encephalitis-virus
#11
Manoj Kumar Gupta, Santosh Kumar Behera, Budheswar Dehury, Namita Mahapatra
BACKGROUND & OBJECTIVES: Limited studies have been reported on Japanese encephalitis (JE) with reference to microarray data analysis. The present study involved an in silico approach for identification and characterization of differentially expressed genes in human microglial cell (CHME3) samples, infected with P20778 strain of Japanese encephalitis virus (JEV). METHODS: Gene expression data (GSE57330) belonging to mRNA expression profile of CHME3 cells infected with JEV, was downloaded from the gene expression omnibus (GEO) database, processed and normalized by robust multichip averaging (RMA) method using affy packages of R...
April 2017: Journal of Vector Borne Diseases
https://www.readbyqxmd.com/read/28746354/spatio-temporal-epidemiology-of-japanese-encephalitis-in-nepal-2007-2015
#12
Dhan Kumar Pant, Tenzin Tenzin, Rakesh Chand, Barun Kumar Sharma, Padam Raj Bist
Japanese encephalitis (JE) is a major public health problem in Nepal. For the effective management and surveillance of JE, a clear understanding of its epidemiology is essential. Therefore, we conducted descriptive and spatial analyses to understand the spatio-temporal distribution of JE in human in Nepal. From 2007 to 2015, 1,823 JE cases were reported with a cumulative mean incidence of 0.735/100,000 population and a case fatality rate of 6.6%. The death rate in the up-to-24 years of age group was 74%. The JE cases were most commonly reported in the age group of 1-14 years...
2017: PloS One
https://www.readbyqxmd.com/read/28742854/risk-of-exposure-to-potential-vector-mosquitoes-for-rural-workers-in-northern-lao-pdr
#13
Julie-Anne A Tangena, Phoutmany Thammavong, Steve W Lindsay, Paul T Brey
BACKGROUND: One major consequence of economic development in South-East Asia has been a rapid expansion of rubber plantations, in which outbreaks of dengue and malaria have occurred. Here we explored the difference in risk of exposure to potential dengue, Japanese encephalitis (JE), and malaria vectors between rubber workers and those engaged in traditional forest activities in northern Laos PDR. METHODOLOGY/PRINCIPAL FINDINGS: Adult mosquitoes were collected for nine months in secondary forests, mature and immature rubber plantations, and villages...
July 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28740748/a-highly-pathogenic-porcine-reproductive-and-respiratory-syndrome-virus-candidate-vaccine-based-on-japanese-encephalitis-virus-replicon-system
#14
Pingsheng Hu, Xiaoming Chen, Lihong Huang, Shukai Liu, Fuyu Zang, Jinchao Xing, Youyue Zhang, Jiaqi Liang, Guihong Zhang, Ming Liao, Wenbao Qi
In the swine industry, porcine reproductive and respiratory syndrome (PRRS) is a highly contagious disease which causes heavy economic losses worldwide. Effective prevention and disease control is an important issue. In this study, we described the construction of a Japanese encephalitis virus (JEV) DNA-based replicon with a cytomegalovirus (CMV) promoter based on the genome of Japanese encephalitis live vaccine virus SA14-14-2, which is capable of offering a potentially novel way to develop and produce vaccines against a major pathogen of global health...
2017: PeerJ
https://www.readbyqxmd.com/read/28728201/-fever-and-headache-after-a-vacation-in-thailand
#15
Benedikt Schwermer, Daniel Eschle, Constantine Bloch-Infanger
History 50 year-old man with fever and headache starting one week after returning from his vacation in Thailand. His general practitioner prescribed amoxicillin/clavulanic acid, without further analyses to pinpoint the infection. Examinations The examination of cerebro-spinal fluid was crucial for the final diagnosis. Lumbar puncture demonstrated a predominantly mononuclear pleocytosis of 80 cells/µl (< 5) with an elevated protein of 782 mg/l (< 450); glucose and lactate were within normal limits...
July 2017: Deutsche Medizinische Wochenschrift
https://www.readbyqxmd.com/read/28724764/rab5-and-rab11-are-required-for-clathrin-dependent-endocytosis-of-japanese-encephalitis-virus-in-bhk-21-cells
#16
Chun-Chun Liu, Yun-Na Zhang, Zhao-Yao Li, Jin-Xiu Hou, Jing Zhou, Lin Kan, Bin Zhou, Pu-Yan Chen
During infection Japanese Encephalitis Virus generally enters host cells via receptor-mediated clathrin dependent endocytosis. The trafficking of JEV within endosomes is controlled by Rab GTPases, but which Rab proteins are involved in JEV entry into BHK-21 cells is unknown. In this study, entry and post-internalization of JEV were analyzed using biochemical inhibitors, RNA interference and dominant negative mutants. Our data demonstrate that JEV entry into BHK-21 cells depends on clathrin, dynamin, and cholesterol, but not caveolae or macropinocytosis...
July 19, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28717094/limbic-encephalitis-associated-with-human-herpesvirus-7-hhv-7-in-an-immunocompetent-adult-the-first-reported-case-in-japan
#17
Yoko Aburakawa, Takayuki Katayama, Tsukasa Saito, Jun Sawada, Tatsuo Suzutani, Hitoshi Aizawa, Naoyuki Hasebe
A 35-year-old male who had not previously suffered any major illnesses was admitted to our hospital because of general fatigue, fever, headache, vomiting, consciousness disturbance, and seizures. A neurological examination showed that he was in a semi-comatose state and exhibited neck stiffness. Brain magnetic resonance imaging detected high-intensity areas in the bilateral hippocampi and periventricular white matter. A cerebrospinal fluid examination revealed mononuclear pleocytosis, an elevated protein level, and positivity for human herpesvirus-7 (HHV-7) DNA...
2017: Internal Medicine
https://www.readbyqxmd.com/read/28716891/which-dengue-vaccine-approach-is-the-most-promising-and-should-we-be-concerned-about-enhanced-disease-after-vaccination-the-path-to-a-dengue-vaccine-learning-from-human-natural-dengue-infection-studies-and-vaccine-trials
#18
Aravinda M de Silva, Eva Harris
Dengue virus (DENV) is the most common arthropod-borne viral disease of humans. Although effective vaccines exist against other flaviviral diseases like yellow fever and Japanese encephalitis, dengue vaccine development is complicated by the presence of four virus serotypes and the possibility of partial immunity enhancing dengue disease severity. Several live attenuated dengue vaccines are being tested in human clinical trials. Initial results are mixed, with variable efficacy depending on DENV serotype and previous DENV exposure...
July 17, 2017: Cold Spring Harbor Perspectives in Biology
https://www.readbyqxmd.com/read/28710958/japanese-encephalitis-virus-counteracts-bst2-restriction-via-its-envelope-protein-e
#19
Mei Li, Ping Wang, Zifeng Zheng, Kai Hu, Mudan Zhang, Xinmeng Guan, Ming Fu, Di Zhang, Wei Wang, Gengfu Xiao, Qinxue Hu, Yalan Liu
It has been well documented that BST2 restricts the release of enveloped viruses by cross-linking newly produced virions to the cell membrane. However, it is less clear whether and how BST2 inhibits the release of enveloped viruses which bud via the secretory pathway. Here, we demonstrated that BST2 restricts the release of Japanese encephalitis virus (JEV) whose budding occurs at the ER-Golgi intermediate compartment, and in turn, JEV infection downregulates BST2 expression. We further found that the JEV envelope protein E, but not other viral components, significantly downregulates BST2 with the viral protein M playing an auxiliary role in the process...
July 12, 2017: Virology
https://www.readbyqxmd.com/read/28705180/etiology-and-prognosis-of-acute-viral-encephalitis-and-meningitis-in-chinese-children-a-multicentre-prospective-study
#20
Junhong Ai, Zhengde Xie, Gang Liu, Zongbo Chen, Yong Yang, Yuning Li, Jing Chen, Guo Zheng, Kunling Shen
BACKGROUND: In China, there were few studies about the pathogens of acute viral encephalitis and meningitis in children in recent years. The aims of this study were to characterize the etiology and prognosis of acute viral encephalitis and meningitis in Chinese children. METHODS: This was a multicentre prospective study. Two hundred and sixty one viral encephalitis patients and 285 viral meningitis patients were enrolled. The mean age of viral encephalitis and meningitis were 5...
July 14, 2017: BMC Infectious Diseases
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