Academic literature on the topic 'Herpèsvirus équin de type 1'
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Journal articles on the topic "Herpèsvirus équin de type 1":
Meersschaert, C., Etienne Thiry, and Paul-Pierre Pastoret. "Épizootiologie des infections à herpèsvirus chez les ruminants sauvages. II. Les virus de la thélite herpétique bovine et du Coryza gangréneux et les autres herpèsvirus isolés des ruminants." Revue d’élevage et de médecine vétérinaire des pays tropicaux 41, no. 3 (March 1, 1988): 235–42. http://dx.doi.org/10.19182/remvt.8681.
Thiry, Etienne, C. Meersschaert, and Paul-Pierre Pastoret. "Epizootiologie des infections à herpèsvirus chez les ruminants sauvages. 1. Le virus de la rhinotrachéite infectieuse bovine et les virus antigéniquement apparentés." Revue d’élevage et de médecine vétérinaire des pays tropicaux 41, no. 2 (February 1, 1988): 113–20. http://dx.doi.org/10.19182/remvt.8706.
Silva, R. A. M. S., A. M. R. Davila, L. B. Iversson, and U. G. P. Abreu. "Maladies virales du cheval au Pantanal, Brésil. Etudes réalisées entre 1990 et 1995." Revue d’élevage et de médecine vétérinaire des pays tropicaux 52, no. 1 (January 1, 1999): 9–12. http://dx.doi.org/10.19182/remvt.9706.
Dissertations / Theses on the topic "Herpèsvirus équin de type 1":
Carnet, Flora. "Amélioration des protocoles vaccinaux contre la grippe équine et la rhinopneumonie : apport de l’iPPVO en tant qu’adjuvant dans le modèle équin, nouvelle approche de la mesure des anticorps neutralisants." Electronic Thesis or Diss., Normandie, 2023. http://www.theses.fr/2023NORMC413.
Equine influenza virus (EIV) and equine herpesvirus-1 (EHV-1) are frequently described in many countries and are two endemic pathogens in the French equine population. These infectious diseases have important consequences both in terms of animal health and welfare and in terms of economic impact. The fight against these viruses is essentially based on the implementation of preventive measures such as vaccination. Despite this epizootics of EIV and EHV-1 are regularly declared in France and throughout the world. Neutralising antibodies, synthesised in response to infection or after immunisation, represent the main line of defence against these viruses. Improved vaccines and a wider range of tools to measure neutralising antibodies can be a valuable strategy in the fight against these viruses. In order to improve the efficacy of the vaccine response, both in magnitude and duration, the use of adjuvants is one way to improve immunogenicity. This thesis consisted, in the first instance, in establishing the proof of concept of the use of iPPVO as an innovative adjuvant in vivo in horses in the context of vaccination against EIV. For this purpose, antibodies were measured by SRH, a method for which the correlates of protection are well defined. The addition of iPPVO at vaccination significantly increased the antibody level to EIV and protection in horses up to 6 months after immunisation. In a second step, a new method for measuring EIV antibodies in serum based on impedancemetry was developed to improve on current methods and facilitate high throughput analysis. This neutralisation test correlated well with SRH test. Another study was performed, which demonstrated the adjuvant potential of iPPVO in horses during vaccination against EHV-1,4. The antibody response measured by serum neutralisation increased up to 5 months after immunisation. Finally, preliminary results on the mechanism of action of iPPVO on peripheral blood mononuclear cells demonstrated the importance of the interferon
Geoffroy, Marie-Claude. "Réactivation de l'expression du gène rep de l'Adeno-Associated Virus de type 2 par la protéine ICP0 de l'Herpès Simplex de type 1." Nantes, 2005. http://www.theses.fr/2005NANT16VS.
Adeno-associated virus type 2 (AAV-2) is a human parvovirus that requires the presence of a helper virus, such as the herpes simplex virus type 1 (HSV-1) to accomplish a complete productive cycle. In the absence of helper virus, AAV-2 can establish a latent infection that is characterized by the absence of expression of viral genes. So far, four HSV-1 early genes, UL5/8/52 (helicase primase complex), and UL29 (ssDBP), were defined as sufficient for AAV replication when cells were transfected with a plasmid encoding for the wild type AAV-2 genome. However, none of these viral products was shown to behave as a transcriptional factor able to activate AAV gene expression. Our study provides the first evidence that the immediate-early HSV-1 protein ICP0, can promote rep gene expression in cells latently infected with wild type AAV-2. This ICP0-mediated effect occurs at the transcriptional level and involves the ubiquitin-proteasome pathway. Furthermore, using deletion mutants we demonstrate that the localization of ICP0 to ND10 and their disruption is not required for the activation of the rep promoter. Finally, ubiquitin-specific protease USP7 plays an indirect role in the reactivation of rep gene expression. Altogether, this study indicates that ICP0 is a key helper factor for AAV gene activation and thus contributes to the definition of the HSV-1 helper activities
Pronost, Stéphane. "Apports des outils de génétique moléculaire à la connaissance de deux infections virales du cheval : herpèsvirus équin 1 et artérite virale équine." Caen, 2010. http://www.theses.fr/2010CAEN3120.
Many viruses are responsible of equine pathologies and may involve both outbreaks and trade limitations. Among them, equid herpesvirus -1 (EHV-1) and equine arteritis virus (EAV) are monitored closely. Methods of detection and molecular characterisation were developed. We investigated the relationships between the different clinical expressions of EHV-1 infection and genotype of the strains being present in France. We could confirm EHV-1 being both a major abortive agent and also responsible of either sporadic or epidemic neurological diseases. Determining by SNP-PCR the presence/absence of mutation A/G2254 in ORF 30, coding for DNA polymerase, allowed to precise that non-neuropathogenic strains could be detected during paralytic forms, and conversely, neuropathogenic strains could be detected during abortive forms of the disease. This suggests that other factors related to horse and environment also are interfering with the clinical expression of the syndrome. Characterisation of the French strains of EAV, by phylogenetic analyses of ORF 2a-7, allowed demonstrating the emergence in 2003 of a North American strain. The outbreak of equine viral arteritis being described in this paper, revealed an European strain from subgroup 2 (highly virulent) to be responsible of one abortion and death of seven horses. Perspectives are based on the complete sequencing of EHV-1 genome as well as phylogenetic study of other EAV strains in order to determine the origin of the outbreak
Zaupa, Cécile. "Développement et utilisation de nouveaux outils biologiques basés sur l'emploi du système de recombinaison Cre/loxP afin de produire des vecteurs amplicons non cytotoxiques dérivés du virus de l'Herpès Simplex de type I." Lyon 1, 2003. http://www.theses.fr/2003LYO10035.
Morency, Eric. "The protein of herpes simplex virus Type 1 : from centromeres to the interphase centromere damage response." Lyon 1, 2007. http://www.theses.fr/2007LYO10317.
Beitia, Ortiz de Zárate Igor. "Etude du transport intracellulaire de la Glycoproteine B de HSV-1 et de son impact sur l'infection virale." Paris 7, 2006. http://www.theses.fr/2006PA077071.
Herpes simplex virus type 1 (HSV-1) is a human pathogen which infects neurons and can reach the central nervous System (CNS), causing encephalitis. Glycoprotein B (gB), a main component of HSV-1 necessary for entry into host cells, has been involved in neuroinvasion. Its cytoplasmic domain contains highly conserved motifs, similar to motifs involved in intracellular sorting of transmembrane proteins. To determine their role in the intracellular transport and maturation of gB, we deleted or mutated these motifs, and characterized the subsequent modifications in transfected and infected cells. We identified a region that includes the di-acidic motif ERTE, which is essential for the maturation and cell surface expression of gB, and for complementation of a gB-null virus. Two other motifs, YTQV and LL, participate in the retrograde transport of gB from the cell surface to the TGN. Whereas YTQV is essential for internalization of gB from the cell surface, LL most likely participates in a further step of this transport, since mutation of the LL motif does not prevent internalization of gB, but delays its accumulation in the TGN, while enhancing its recycling to the cell surface. Modification of these motifs leads to a decrease in virus infectivity and to changes in the phenotype of infection in cell culture (disruption of the LL motif enhances syncytium formation and the opposite is observed when the YTQV motif is modified). Altogether, these results favor a model in which HSV-1 gets its glycoproteins and final envelope at the TGN, and suggest that retrograde transport of gB, albeit non essential, might play an important role in cell-to-cell spread and infectivity of the virus
Cuchet, Delphine. "Développement de vecteurs dérivés du virus de l'herpès simplex de type (HSV-1) pour le traitement des tumeurs cérébrales." Lyon 1, 2004. http://www.theses.fr/2004LYO10114.
HSV-1 derived vectors are promising tools for viral oncolysis or gene therapy by suicide gene of brain tumors. Attenuated recombinant vector are used for viral oncolysis. We have constructed and characterized a recombinant vector which carries a transgenic, biscistronic and auto-inductible expression unit. Defectif amplicon type vectors are tools with good potential for transfer of large size DNA in variety of cell types. We have constructed and developed an amplicon vector which carries the gene encoding the herpetic ICP0 protein. Human glioblastoma cells infected with this vector stop proliferating, resulting in cell death. No toxic effects were observed in non proliferaing infected cells. We have studied the expression of a second transgene carried by amplicon vectors and showed that though its expression is cell type dependent, simultaneous ICP0 expression could significantly increased it
Mahiet, Charlotte. "Caractérisation du génome de l'herpès simplex virus de type 1." Paris 7, 2012. http://www.theses.fr/2012PA077069.
HSV-1 is a prevalent human pathogen that commonly leads to recurrent facialoral lesions. Although there are efficient drugs to block its replication, HSV-1 is never clear of the host Within this context, the company Cellectis aims to develop a new class of therapeutic agent (the meganucleases) that specifically cleaves into the HSV-1 genome of infected cells, thus allowing its eradication. The first question addressed during this thesis was how to assess the efficacy and safety of such a therapy. We proposed molecular combing for the direct visualization and analysis of single DNA molecules through hybridization of specific probes on uniformly and irreversibly stretched HSV-1 DNA. Following technical improvements, we successfully detected the genomes in viral particles and infected cell DNA extracts, as well as in DNA extracts from mouse, rabbit and human cornea. We were confronted to the complexity of the organization of HSV-1 genomes. Indeed, its 152 kb genome is organized in two covalently linked-segments. Each segment is composed of a unique sequence flanked by inverted repeated sequences. During replication, four HSV-1 genome isomers are produced by homologous recombination between the inverted repeats. We tested the hypothesis that the process of isomerization systematically results in a random distribution no matter which cell or strain is considered. Using HSV-1 probes, we were able to distinguish between the four isomers through molecular combing analysis. Interestingly, both in vitro and in vivo, we found imbalanced distribution functions of the strain, cell or tissue considered. In the DNA extract of infected cells, concatemeric molecules as long as 10 equivalent genomes were detected. Strikingly, among these, the isomers distribution was always equivalent. This suggests that any such imbalance may occur during encapsidation. A considerable proportion of non-canonical assortments were detected in vitro and in vivo
Savard, Nathalie. "Production de vecteurs rétroviraux à l'aide de vecteurs herpétiques de type amplicon." Lyon 1, 1996. http://www.theses.fr/1996LYO10299.
Bataille, Dominique. "Analyses de la structure des intermédiaires de la réplication de l'ADN du virus Herpes simplex de type 1." Lyon 1, 1997. http://www.theses.fr/1997LYO10146.