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https://www.readbyqxmd.com/read/28931127/single-visit-rabies-pre-exposure-priming-induces-a-robust-anamnestic-antibody-response-after-simulated-post-exposure-vaccination-results-of-a-dose-finding-study
#1
Emile F F Jonker, Leonardus G Visser
Background: The current standard 3-dose intramuscular rabies PrEP schedule suffers from a number of disadvantages that severely limit accessibility and availability. The cost of is often prohibitive, it requires 3 visits to the clinic, and there are regular vaccine shortages. Methods: Volunteers ( N  = 30) were randomly assigned to 4 study arms: 1 standard dose intramuscular (IM) dose of PVRV (purified Vero cell rabies vaccine, Verorab), and 1/5th, 2/5th or 3/5th- fractional intradermal (ID) dose of PVRV in a single visit...
September 1, 2017: Journal of Travel Medicine
https://www.readbyqxmd.com/read/28928726/phosphoprotein-gene-contributes-to-the-enhanced-apoptosis-induced-by-wild-type-rabies-virus-gd-sh-01-in-vitro
#2
Qin Tian, Yifei Wang, Qiong Zhang, Jun Luo, He Jiang, Boyue Zhang, Mingzhu Mei, Fan Wu, Yuting Wu, Jiaojiao Peng, Teng Long, Yongwen Luo, Xiaofeng Guo
Previous research demonstrated that the matrix protein (M) and glycoprotein (G) of attenuated rabies virus (RABV) strains are involved in the induction of host cell apoptosis. In this work, we show that wild-type (wt) RABV GD-SH-01 induces significantly greater apoptosis than the attenuated strain HEP-Flury. In order to identify the gene(s) accounting for this phenotype, five recombinant RABVs (rRABVs) were constructed by replacing each single gene of HEP-Flury with the corresponding gene of GD-SH-01. By using these rRABVs, we found that not only M and G, but also the phosphoprotein (P) plays an important role in inducing apoptosis...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28925795/application-of-replication-defective-west-nile-virus-vector-to-non-flavivirus-vaccine-targets
#3
Maryann Giel-Moloney, Michael Vaine, Linong Zhang, Mark Parrington, Beata Gajewska, Thorsten U Vogel, Svetlana O Pougatcheva, Xiaochu Duan, Timothy Farrell, Irina Ustyugova, Sanjay Phogat, Harry Kleanthous, Konstantin V Pugachev
The RepliVaxvaccine platform(RV) is based on flavivirus genomes that are rationally attenuated by deletion. The self-limiting infection provided by RV has been demonstrated to be safe, highly immunogenic and efficacious for several vaccine candidates against flaviviruses. Here respiratory syncytial virus (RSV) F, influenza virus HA, and Simian Immunodeficiency virus (SIV) Env proteins were expressed in place of either prM-E or C-prM-E gene deletions of the West Nile (WN) genome. The resulting RV-RSV, -influenza and -SIV vaccine prototypes replicated efficiently in complementing helper cells expressing the WN structural proteins in trans...
September 19, 2017: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/28921430/production-of-recombinant-rabies-virus-glycoprotein-by-insect-cells-in-a-single-use-fixed-bed-bioreactor
#4
Daniella C Ventini-Monteiro, Renato M Astray, Carlos A Pereira
A single-use fixed-bed bioreactor (iCELLis nano) can be used for cultivating non adherent insect cells, which can be then recovered for scaling up or for harvesting a membrane-associated viral glycoprotein with high quality in terms of preserved protein structure and biological function. Here, we describe the procedures for establishing genetically modified Drosophila melanogaster Schneider 2 (S2) cell cultures in the iCELLis nano bioreactor and for quantifying by ELISA the recombinant rabies virus glycoprotein (rRVGP) synthesized...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28917641/changes-in-innervation-of-lumbar-motoneurons-and-organization-of-premotor-network-following-training-of-transected-adult-rats
#5
Loubna Khalki, Karina Sadlaoud, Julie Lerond, Jacques-Olivier Coq, Jean-Michel Brezun, Laurent Vinay, Patrice Coulon, Hélène Bras
Rats with complete spinal cord transection (SCT) can recover hindlimb locomotor function under strategies combining exercise training and 5-HT agonist treatment. This recovery is expected to result from structural and functional re-organization within the spinal cord below the lesion. To begin to understand the nature of this reorganization, we examined synaptic changes to identified gastrocnemius (GS) or tibialis anterior (TA) motoneurons (MNs) in SCT rats after a schedule of early exercise training and delayed 5-HT agonist treatment...
September 13, 2017: Experimental Neurology
https://www.readbyqxmd.com/read/28913904/re-emergence-of-rabies-virus-maintained-by-canid-populations-in-paraguay
#6
A C F Amarilla, J C A Pompei, D B Araujo, F A Vázquez, R R Galeano, L M Delgado, G Bogado, M Colman, L Sanabria, K Iamamoto, R Garcia, D Assis, R Recalde, L F Martorelli, E Quiñones, A Cabello, M Martini, O Cosivi, E L Durigon, S R Favoretto
Paraguay has registered no human cases of rabies since 2004, and the last case in dogs, reported in 2009, was due to a variant maintained in the common vampire bat "Desmodus rotundus". In 2014, a dog was diagnosed as positive for rabies with aggression towards a boy and all required measures of control were successfully adopted. Epidemiological investigation revealed that the dog was not vaccinated and had been attacked by a crab-eating fox, "zorro" (Cerdocyon thous). The sample was diagnosed by the Official Veterinary Service of the Country and sent to the Center on Rabies Research from the University of São Paulo, Brazil, for antigenic and genetic characterization...
September 14, 2017: Zoonoses and Public Health
https://www.readbyqxmd.com/read/28913341/assessing-the-risk-of-a-canine-rabies-incursion-in-northern-australia
#7
Emily G Hudson, Victoria J Brookes, Michael P Ward
Rabies is a globally distributed virus that causes approximately 60,00 human deaths annually with >99% of cases caused by dog bites. Australia is currently canine rabies free. However, the recent eastward spread of rabies in the Indonesian archipelago has increased the probability of rabies entry into northern Australian communities. In addition, many northern Australian communities have large populations of free-roaming dogs, capable of maintaining rabies should an incursion occur. A risk assessment of rabies entry and transmission into these communities is needed to target control and surveillance measures...
2017: Frontiers in Veterinary Science
https://www.readbyqxmd.com/read/28902833/rabies-screen-reveals-gpe-control-of-cocaine-triggered-plasticity
#8
Kevin T Beier, Christina K Kim, Paul Hoerbelt, Lin Wai Hung, Boris D Heifets, Katherine E DeLoach, Timothy J Mosca, Sophie Neuner, Karl Deisseroth, Liqun Luo, Robert C Malenka
Identification of neural circuit changes that contribute to behavioural plasticity has routinely been conducted on candidate circuits that were preselected on the basis of previous results. Here we present an unbiased method for identifying experience-triggered circuit-level changes in neuronal ensembles in mice. Using rabies virus monosynaptic tracing, we mapped cocaine-induced global changes in inputs onto neurons in the ventral tegmental area. Cocaine increased rabies-labelled inputs from the globus pallidus externus (GPe), a basal ganglia nucleus not previously known to participate in behavioural plasticity triggered by drugs of abuse...
September 13, 2017: Nature
https://www.readbyqxmd.com/read/28899628/a-novel-approach-to-a-rabies-vaccine-based-on-a-recombinant-single-cycle-flavivirus-vector
#9
Maryann Giel-Moloney, Alexander A Rumyantsev, Fred David, Monica Figueiredo, Brad Feilmeier, Teshome Mebatsion, Mark Parrington, Harry Kleanthous, Konstantin V Pugachev
The RepliVax® vaccine (RV) platform is based on flavivirus genomes that are rationally attenuated by deletion. These single-cycle RV vaccine candidates targeting flavivirus pathogens have been demonstrated to be safe, highly immunogenic, and efficacious in animal models, including non-human primates. Here we show utility of the technology for delivery of a non-flavivirus immunogen by engineering several West Nile-based RV vectors to express full-length rabies virus G protein. The rabies virus G protein gene was incorporated in place of different West Nile structural protein gene deletions...
September 9, 2017: Vaccine
https://www.readbyqxmd.com/read/28898730/immunogenicity-of-orfv-based-vectors-expressing-the-rabies-virus-glycoprotein-in-livestock-species
#10
Mathias Martins, Lok R Joshi, Fernando S Rodrigues, Deniz Anziliero, Rafael Frandoloso, Gerald F Kutish, Daniel L Rock, Rudi Weiblen, Eduardo F Flores, Diego G Diel
The parapoxvirus Orf virus (ORFV) encodes several immunomodulatory proteins (IMPs) that modulate host-innate and pro-inflammatory responses and has been proposed as a vaccine delivery vector for use in animal species. Here we describe the construction and characterization of two recombinant ORFV vectors expressing the rabies virus (RABV) glycoprotein (G). The RABV-G gene was inserted in the ORFV024 or ORFV121 gene loci, which encode for IMPs that are unique to parapoxviruses and inhibit activation of the NF-κB signaling pathway...
September 9, 2017: Virology
https://www.readbyqxmd.com/read/28890212/a-self-killing-rabies-virus-that-leaves-a-trace-on-the-dna
#11
William Menegas, Naoshige Uchida, Mitsuko Watabe-Uchida
Although modified rabies viruses have emerged as a powerful tool for tracing the inputs to genetically defined populations of neurons, the toxicity of the virus has limited its utility. A recent study employed a self-inactivating rabies (SiR) virus that enables recording or manipulation of targeted neurons for months.
September 7, 2017: Trends in Neurosciences
https://www.readbyqxmd.com/read/28882441/generation-of-a-novel-live-rabies-vaccine-strain-with-a-high-level-of-safety-by-introducing-attenuating-mutations-in-the-nucleoprotein-and-glycoprotein
#12
Keisuke Nakagawa, Kento Nakagawa, Tsutomu Omatsu, Yukie Katayama, Mami Oba, Hiromichi Mitake, Kazuma Okada, Satoko Yamaoka, Yasuhiro Takashima, Tatsunori Masatani, Kota Okadera, Naoto Ito, Tetsuya Mizutani, Makoto Sugiyama
The current live rabies vaccine SAG2 is attenuated by only one mutation (Arg-to-Glu) at position 333 in the glycoprotein (G333). This fact generates a potential risk of the emergence of a pathogenic revertant by a back mutation at this position during viral propagation in the body. To circumvent this risk, it is desirable to generate a live vaccine strain highly and stably attenuated by multiple mutations. However, the information on attenuating mutations other than that at G333 is very limited. We previously reported that amino acids at positions 273 and 394 in the nucleoprotein (N273/394) (Leu and His, respectively) of fixed rabies virus Ni-CE are responsible for the attenuated phenotype by enhancing interferon (IFN)/chemokine gene expressions in infected neural cells...
September 4, 2017: Vaccine
https://www.readbyqxmd.com/read/28869875/ultrastructure-and-morphometric-features-of-epididymal-epithelium-in-desmodus-rotundus
#13
Mariana Moraes de Castro, Wagner Gonzaga Gonçalves, Stéphanie Asséf Millen Valente Teixeira, Maria do Carmo Queiroz Fialho, Felipe Couto Santos, Jerusa Maria Oliveira, José Eduardo Serrão, Mariana Machado-Neves
The blood-feeding behavior of Desmodus rotundus made this bat a potential vector of rabies virus and a public health issue. Consequently, the better understanding of its reproductive biology becomes valuable for the development of methods to control its population. In this study, we described morphological aspects of epithelial cells in D. rotundus' epididymis using light and transmission electron microscopy methods. The duct compartment was the main component of initial segment (83%), caput (90%), corpus (88%) and cauda (80%) regions...
August 26, 2017: Micron: the International Research and Review Journal for Microscopy
https://www.readbyqxmd.com/read/28869493/vaccines-against-botulism
#14
REVIEW
Grace Sundeen, Joseph T Barbieri
Botulinum neurotoxins (BoNT) cause the flaccid paralysis of botulism by inhibiting the release of acetylcholine from motor neurons. There are seven serotypes of BoNT (A-G), with limited therapies, and no FDA approved vaccine for botulism. An investigational formalin-inactivated penta-serotype-BoNT/A-E toxoid vaccine was used to vaccinate people who are at high risk of contracting botulism. However, this formalin-inactivated penta-serotype-BoNT/A-E toxoid vaccine was losing potency and was discontinued. This article reviews the different vaccines being developed to replace the discontinued toxoid vaccine...
September 2, 2017: Toxins
https://www.readbyqxmd.com/read/28867845/a-data-platform-to-improve-rabies-prevention-sri-lanka
#15
A Pubudu De Silva, Pa Lionel Harischandra, Abi Beane, Shriyananda Rathnayaka, Ruwini Pimburage, Wageesha Wijesiriwardana, Dilanthi Gamage, Desika Jayasinghe, Chathurani Sigera, Amila Gunasekara, Mizaya Cadre, Sarath Amunugama, Priyantha L Athapattu, K Saroj A Jayasinghe, Arjen M Dondorp, Rashan Haniffa
PROBLEM: In Sri Lanka, rabies prevention initiatives are hindered by fragmented and delayed information-sharing that limits clinicians' ability to follow patients and impedes public health surveillance. APPROACH: In a project led by the health ministry, we adapted existing technologies to create an electronic platform for rabies surveillance. Information is entered by trained clinical staff, and both aggregate and individual patient data are visualized in real time...
September 1, 2017: Bulletin of the World Health Organization
https://www.readbyqxmd.com/read/28861771/recombinant-rabies-virus-expressing-il-15-enhances-immunogenicity-through-promoting-the-activation-of-dendritic-cells-in-mice
#16
Tiange Chen, Yajing Zhang, Zhao Wang, Jie Yang, Mingming Li, Kunlun Wang, Min Cui, Zhen F Fu, Ling Zhao, Ming Zhou
Rabies remains a public health threat that kills approximately 59,000 people worldwide each year, most of which are from the developing countries of Africa and Asia where dog rabies are endemic. Therefore, developing an affordable and efficacious vaccine is crucial for rabies control in these countries. Interleukin (IL)-15, an immunoregulatory cytokine, is a pluripotent molecule with therapeutic potential, which targets many cell types and links the innate and adaptive immune system. In this study, IL-15 gene was cloned and inserted into the genome of a recombinant rabies virus (RABV) strain LBNSE (designated as LBNSE-IL15), and the effect of over-expression of IL-15 on the immunogenicity of RABV was investigated...
August 2017: Virologica Sinica
https://www.readbyqxmd.com/read/28856449/glycoprotein-g-gene-based-molecular-and-phylogenetic-analysis-of-rabies-viruses-associated-with-a-large-outbreak-of-bovine-rabies-in-southern-brazil
#17
Juliana F Cargnelutti, João M de Quadros, Mathias Martins, Helena B C R Batista, Rudi Weiblen, Eduardo F Flores
A large outbreak of hematophagous-bat-associated bovine rabies has been occurring in Rio Grande do Sul (RS), the southernmost Brazilian state, since 2011, with official estimates exceeding 50,000 cattle deaths. The present article describes a genetic characterization of rabies virus (RABV) recovered from 59 affected cattle and two sheep, from 56 herds in 16 municipalities (2012-2016). Molecular analysis was performed using the nucleotide (nt) and predicted amino acid (aa) sequences of RABV glycoprotein G (G)...
August 30, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28854892/incidence-of-human-rabies-and-characterization-of-rabies-virus-nucleoprotein-gene-in-dogs-in-fujian-province-southeast-china-2002-2012
#18
Jian-Ming Zhang, Zhi-Shan Zhang, Yan-Qin Deng, Shou-Li Wu, Wei Wang, Yan-Sheng Yan
BACKGROUND: Rabies is a global fatal infectious viral disease that is characterized by a high mortality after onset of clinical symptoms. Recently, there has been an increase in the incidence of rabies in China. The aim of this study was to investigate the incidence of human rabies and characterize the rabies virus nucleoprotein gene in dogs sampled from Fujian Province, Southeast China from 2002 to 2012. METHODS: Data pertaining to human rabies cases in Fujian Province during the period from 2002 through 2012 were collected, and the epidemiological profiles were described...
August 30, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28854789/detection-and-molecular-characterization-of-tomato-yellow-leaf-curl-virus-naturally-infecting-lycopersicon-esculentum-in-egypt
#19
M Rabie, C Ratti, E Abdel Aleem, F Fattouh
Tomato yellow leaf curl virus (TYLCV) infections of tomato crops in Egypt were widely spread in 2014. Infected symptomatic tomato plants from different governorates were sampled. TYLCV strains Israel and Mild (TYLCV-IL, TYLCV-Mild) were identified by multiplex and real-time PCR. In addition, nucleotide sequence analysis of the V1 and V2 protein genes, revealed ten TYLCV Egyptian isolates (TYLCV from TY1 to 10). Phylogenetic analysis showed their high degree of relatedness with TYLCV-IL Jordan isolate (98%)...
2017: Acta Virologica
https://www.readbyqxmd.com/read/28846485/plant-made-vaccines-and-reagents-for-the-one-health-initiative
#20
Edward Peter Rybicki
The One Health initiative is increasingly becoming a prominent discussion topic in animal and human health, with its focus on prevention of spread of zoonotic diseases, both in animals, and from animals to humans. An important part of One Health is that diagnostics and vaccines for diseases may be the same thing - and be used for both humans and animals. One potential problem standing in the way of wider adoption of One Health principles, though, is that use of conventional cell fermentation systems for production of the recombinant proteins that could be used as diagnostics or vaccines is often expensive and is not easily scalable...
August 28, 2017: Human Vaccines & Immunotherapeutics
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