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Tick borne encephalitis vaccine

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https://www.readbyqxmd.com/read/28221100/intracellular-degradation-and-localization-of-ns1-of-tick-borne-encephalitis-virus-affect-its-protective-properties
#1
Yulia V Kuzmenko, Elizaveta S Starodubova, Anastasia S Shevtsova, Liubov L Chernokhaeva, Anastasia A Latanova, Olga V Preobrazhenskaia, Andrey V Timofeev, Galina G Karganova, Vadim L Karpov
Currently, many DNA vaccines against infectious diseases are in clinical trials; however, their efficacy needs to be improved. The potency of DNA immunogen can be optimized by targeting technologies. In the current study, to increase the efficacy of NS1 encoded by plasmid, proteasome targeting was applied. NS1 variants with or without translocation sequence and with ornithine decarboxylase as a signal of proteasomal degradation were tested for expression, localization, protein turnover, proteasomal degradation and protection properties...
January 2017: Journal of General Virology
https://www.readbyqxmd.com/read/28213810/how-to-tackle-natural-focal-infections-from-risk-assessment-to-vaccination-strategies
#2
Luca Busani, Alexander E Platonov, Onder Ergonul, Giovanni Rezza
Natural focal diseases are caused by biological agents associated with specific landscapes. The natural focus of such diseases is defined as any natural ecosystem containing the pathogen's population as an essential component. In such context, the agent circulates independently on human presence, and humans may become accidentally infected through contact with vectors or reservoirs. Some viruses (i.e., tick-borne encephalitis and Congo-Crimean hemorrhagic fever virus) are paradigmatic examples of natural focal diseases...
February 18, 2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28179396/the-antigenic-structure-of-zika-virus-and-its-relation-to-other-flaviviruses-implications-for-infection-and-immunoprophylaxis
#3
REVIEW
Franz X Heinz, Karin Stiasny
Zika virus was discovered ∼70 years ago in Uganda and maintained a low profile as a human disease agent in Africa and Asia. Only recently has it caused explosive outbreaks in previously unaffected regions, first in Oceania and then in the Americas since 2015. Of special concern is the newly identified link between congenital malformations (especially microcephaly) and Zika virus infections during pregnancy. At present, it is unclear whether Zika virus changed its pathogenicity or whether the huge number of infections allowed the recognition of a previously cryptic pathogenic property...
March 2017: Microbiology and Molecular Biology Reviews: MMBR
https://www.readbyqxmd.com/read/28153343/tick-borne-encephalitis-in-china-a-review-of-epidemiology-and-vaccines
#4
REVIEW
Yi Xing, Heinz-Josef Schmitt, Adriano Arguedas, Junfeng Yang
Tick-borne encephalitis (TBE) has been shown to be endemic in northern and western China, including the three mountain areas in Heilongjiang, Jilin, Inner Mongolia, and Xinjiang. In addition, serology evidence shows that there is human infection in south-west provinces of China, including Xizang (Tibet) and Yunnan. TBE in China is caused by the Far Eastern TBE virus subtype and there is no biphasic course for disease presentation. The majority of TBE cases in China have occurred in people who were living or working in forests...
January 30, 2017: Vaccine
https://www.readbyqxmd.com/read/28143786/compliance-with-vaccination-against-tick-borne-encephalitis-virus-in-germany
#5
Louis Jacob, Karel Kostev
OBJECTIVES: The goal of this study was to analyze patients' compliance with vaccination against Tick-borne encephalitis (TBE) virus in Germany. METHODS: The present study included 7,266 patients from 638 general practices and 4,194 patients from 114 pediatric practices. Patients were included if they had received the first dose of one of two vaccines against TBE virus (FSME-Immune® and Encepur®). The immunization schedule of these vaccines consisted of three injections...
January 28, 2017: Clinical Microbiology and Infection
https://www.readbyqxmd.com/read/28077444/protein-interactions-during-the-flavivirus-and-hepacivirus-life-cycle
#6
Gisa Gerold, Janina Bruening, Bettina Weigel, Thomas Pietschmann
Protein-protein interactions govern biological functions in cells, in the extracellular milieu and at the border between cells and extracellular space. Viruses are small intracellular parasites and thus rely on protein interactions to produce progeny inside host cells and to spread from cell to cell. Usage of host proteins by viruses can have severe consequences e.g. apoptosis, metabolic disequilibria or altered cell proliferation and mobility. Understanding protein interactions during virus infection can thus educate us on viral infection and pathogenesis mechanisms...
January 11, 2017: Molecular & Cellular Proteomics: MCP
https://www.readbyqxmd.com/read/27875810/nonstructural-protein-1-of-tick-borne-encephalitis-virus-induces-oxidative-stress-and-activates-antioxidant-defense-by-the-nrf2-are-pathway
#7
Yulia V Kuzmenko, Olga A Smirnova, Alexander V Ivanov, Elizaveta S Starodubova, Vadim L Karpov
BACKGROUND: Infection with tick-borne encephalitis virus (TBEV) causes pathological changes in the central nervous system. However, the possible redox alterations in the infected cells that can contribute to the virus pathogenicity remain unknown. OBJECTIVE: In the current study we explored the ability of TBEV nonstructural protein 1 (NS1) to induce oxidative stress and activate antioxidant defense via the nuclear factor (erythroid-derived-2)-like 2/antioxidant response element (Nrf2/ARE) pathway...
2016: Intervirology
https://www.readbyqxmd.com/read/27779467/travel-related-tick-borne-encephalitis-israel-2006-2014
#8
Eyal Meltzer, Yael Paran, Yaniv Lustig, Shmuel Stienlauf, Miriam Weinberger, Eli Schwartz
During 2006-2014, four tick-borne encephalitis (TBE) cases occurred among Israeli travelers. We calculated TBE incidence at 321.0, 45.0, 13.2, and 7.5 cases/100,000 travelers/year of travel to Sweden, Switzerland, Austria, and Germany, respectively. TBE incidence among travelers to these destinations appears to justify TBE vaccination in accordance with World Health Organization recommendations.
January 2017: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/27760182/revisiting-recombination-signal-in-the-tick-borne-encephalitis-virus-a-simulation-approach
#9
Yann J K Bertrand, Magnus Johansson, Peter Norberg
The hypothesis of wide spread reticulate evolution in Tick-Borne Encephalitis virus (TBEV) has recently gained momentum with several publications describing past recombination events involving various TBEV clades. Despite a large body of work, no consensus has yet emerged on TBEV evolutionary dynamics. Understanding the occurrence and frequency of recombination in TBEV bears significant impact on epidemiology, evolution, and vaccination with live vaccines. In this study, we investigated the possibility of detecting recombination events in TBEV by simulating recombinations at several locations on the virus' phylogenetic tree and for different lengths of recombining fragments...
2016: PloS One
https://www.readbyqxmd.com/read/27717318/recombinant-domains-iii-of-tick-borne-encephalitis-virus-envelope-protein-in-combination-with-dextran-and-cpgs-induce-immune-response-and-partial-protectiveness-against-tbe-virus-infection-in-mice
#10
Anna S Ershova, Olga A Gra, Alexander M Lyaschuk, Tatyana M Grunina, Artem P Tkachuk, Mikhail S Bartov, Darya M Savina, Olga V Sergienko, Zoya M Galushkina, Vladimir P Gudov, Liubov I Kozlovskaya, Ivan S Kholodilov, Larissa V Gmyl, Galina G Karganova, Vladimir G Lunin, Anna S Karyagina, Alexander L Gintsburg
BACKGROUND: E protein of tick-borne encephalitis virus (TBEV) and other flaviviruses is located on the surface of the viral particle. Domain III of this protein seems to be a promising component of subunit vaccines for prophylaxis of TBE and kits for diagnostics of TBEV. METHODS: Three variants of recombinant TBEV E protein domain III of European, Siberian and Far Eastern subtypes fused with dextran-binding domain of Leuconostoc citreum KM20 were expressed in E...
October 7, 2016: BMC Infectious Diseases
https://www.readbyqxmd.com/read/27715427/tick-borne-encephalitis-what-travelers-should-know-when-visiting-an-endemic-country
#11
Aleš Chrdle, Václav Chmelík, Daniel Růžek
Tick-borne encephalitis (TBE) is an acute febrile illness with neurological manifestations that is prevalent in forested areas of moderate climate in Europe and Asia. TBE virus is transmitted by ticks and rarely by unpasteurized milk and dairy products. The disease burden is attributed mainly to resulting long-term disability, especially in individuals over 50 y of age. Currently, there is no causative treatment, but a very effective vaccination is available with a good safety profile. The vaccination requires 3 basic doses to be fully effective and regular boosters afterwards...
October 2, 2016: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/27660864/students-attitudes-to-tick-risks
#12
Helena Nejezchlebova, Dorota Kiewra, Alena Žákovská, Petra Ovesná
INTRODUCTION AND OBJECTIVES: The ever-increasing number of patients with tick-borne diseases resulted in the presented study investigating the awareness, attitudes and knowledge among students about the threats arising from tick bites and preventive anti-tick practices. MATERIALS AND METHOD: Questionnaires concerning these issues were distributed amongst Czech and Polish university students of science. Responses were analyzed by nationality and by gender. RESULTS: Nearly all respondents were aware of the risks arising from ticks and could name at least one disease transmitted by ticks...
September 2016: Annals of Agricultural and Environmental Medicine: AAEM
https://www.readbyqxmd.com/read/27642148/-tick-borne-encephalitis-in-a-child-in-a-nonendemic-country-a-case-report
#13
M Levy, M-T Abi-Warde, A-C Rameau, S Fafi-Kremer, Y Hansmann, M Fischbach, L Higel
Tick-borne encephalitis (TBE) is an arbovirus induced by tick-borne encephalitis virus (TBEV) transmitted by tick bite. The disease is rare in France (two to three cases per year) but endemic zones extend from Western Europe to the east coast of Asia (10,000-15,000 cases per year). An 8-year-old boy was admitted to our pediatric ward in Strasbourg (France) for febrile headache with diplopia. Four days after a tick bite, he declared a febrile headache together with maculopapular rash on the elbows, knees, and cheeks...
October 2016: Archives de Pédiatrie: Organe Officiel de la Sociéte Française de Pédiatrie
https://www.readbyqxmd.com/read/27633257/a-serological-protein-microarray-for-detection-of-multiple-cross-reactive-flavivirus-infections-in-horses-for-veterinary-and-public-health-surveillance
#14
N B Cleton, K van Maanen, S A Bergervoet, N Bon, C Beck, G-J Godeke, S Lecollinet, R Bowen, D Lelli, N Nowotny, M P G Koopmans, C B E M Reusken
The genus Flavivirus in the family Flaviviridae includes some of the most important examples of emerging zoonotic arboviruses that are rapidly spreading across the globe. Japanese encephalitis virus (JEV), West Nile virus (WNV), St. Louis encephalitis virus (SLEV) and Usutu virus (USUV) are mosquito-borne members of the JEV serological group. Although most infections in humans are asymptomatic or present with mild flu-like symptoms, clinical manifestations of JEV, WNV, SLEV, USUV and tick-borne encephalitis virus (TBEV) can include severe neurological disease and death...
September 15, 2016: Transboundary and Emerging Diseases
https://www.readbyqxmd.com/read/27473856/flavivirus-ns1-a-multifaceted-enigmatic-viral-protein
#15
REVIEW
Meghana Rastogi, Nikhil Sharma, Sunit Kumar Singh
Flaviviruses are emerging arthropod-borne viruses representing an immense global health problem. The prominent viruses of this group include dengue virus, yellow fever virus, Japanese encephalitis virus, West Nile virus tick borne encephalitis virus and Zika Virus. These are endemic in many parts of the world. They are responsible for the illness ranging from mild flu like symptoms to severe hemorrhagic, neurologic and cognitive manifestations leading to death. NS1 is a highly conserved non-structural protein among flaviviruses, which exist in diverse forms...
2016: Virology Journal
https://www.readbyqxmd.com/read/27397572/post-tick-borne-encephalitis-virus-vaccination-narcolepsy-with-cataplexy
#16
Hildegard Hidalgo, Ulf Kallweit, Johannes Mathis, Claudio L Bassetti
STUDY OBJECTIVES: Narcolepsy with cataplexy (NC) is a chronic neurological disorder thought to result from an altered immune response based on a genetic predisposition coupled with environmental factors. Pandemrix vaccination has been reported to increase the risk of narcolepsy. We aimed at identifying other vaccines associated with the onset of narcolepsy. METHODS: Case series and retrospective database study. RESULTS: We identified four cases of NC following a tick-borne encephalitis (TBE) vaccination with FSME Immun...
October 1, 2016: Sleep
https://www.readbyqxmd.com/read/27365085/vaccinations-for-neuroinfectious-disease-a-global-health-priority
#17
REVIEW
Emily C Leibovitch, Steven Jacobson
Vaccines for neuroinfectious diseases are becoming an ever-increasing global health priority, as neurologic manifestations and sequelae from existing and emerging central nervous system infections account for significant worldwide morbidity and mortality. The prevention of neurotropic infections can be achieved through globally coordinated vaccination campaigns, which have successfully eradicated nonzoonotic agents such as the variola viruses and, hopefully soon, poliovirus. This review discusses vaccines that are currently available or under development for zoonotic flaviviruses and alphaviruses, including Japanese and tick-borne encephalitis, yellow fever, West Nile, dengue, Zika, encephalitic equine viruses, and chikungunya...
July 2016: Neurotherapeutics: the Journal of the American Society for Experimental NeuroTherapeutics
https://www.readbyqxmd.com/read/27364148/an-outbreak-of-tick-borne-encephalitis-associated-with-raw-goat-milk-and-cheese-consumption-croatia-2015
#18
Leo Markovinović, M L Kosanović Ličina, V Tešić, D Vojvodić, I Vladušić Lucić, T Kniewald, T Vukas, M Kutleša, Lidija Cvetko Krajinović
The aim of this report is to emphasize the risk of acquiring TBE by the consumption of raw milk and dairy products. In April-May 2015, we registered the first outbreak of tick-borne encephalitis in Croatia in seven members out of ten exposed persons who consumed raw goat milk or cheese from the same supplier. Infection was confirmed by TBEV enzyme-linked immunosorbent assay (ELISA) in all patients. None had been vaccinated nor had observed a tick bite.
October 2016: Infection
https://www.readbyqxmd.com/read/27348895/-tick-borne-encephalitis-an-update
#19
Ingo Stock
Tick-borne encephalitis (TBE) is a systemic infectious disease with nonspecific symptoms and/or severe neurological disorders such as meningitis, encephalitis and myelitis. The disease is caused by TBE virus, an enveloped RNA virus belonging to the family of flaviviruses. Three subtypes are currently present in different parts of Europe and Asia. The TBE virus is transmitted to humans primarily by the tick bite of Ixodes species such as I. ricinus, but also by the ingestion of contaminated raw milk and raw milk products...
May 2016: Medizinische Monatsschrift Für Pharmazeuten
https://www.readbyqxmd.com/read/27268448/-immunization-against-tick-borne-encephalitis
#20
REVIEW
Martin Krause, Sabine Majer
Tick-borne encephalitis (TBE) is a viral infection that may cause irreversible damage to the brain and even result in death. No specific therapy exists. Active immunization is of major importance in controlling the infection. Vaccination is recommended to all adults and children > 6 years who live in endemic areas. Two inactivated vaccines are available in Switzerland. The vaccination schedule includes a basic immunization composed of 3 injections followed by boosting every 10 years. The efficacy of the vaccines has never been investigated in controlled studies, however, from indirect evidence, the vaccines are thought to cause good protection and to be safe...
2016: Therapeutische Umschau. Revue Thérapeutique
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