Dissertations / Theses on the topic 'Virus Retroviridae'
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Dirks, Clarissa A. "The role of cellular factors in retrovirus replication /." Thesis, Connect to this title online; UW restricted, 2001. http://hdl.handle.net/1773/5072.
Full textMurray, Shannon. "Foamy virus-host interactions /." Thesis, Connect to this title online; UW restricted, 2007. http://hdl.handle.net/1773/4987.
Full textBoomer, Sarah M. "The evolution of host range and receptor determinants for subgroup B feline leukemia viruses /." Thesis, Connect to this title online; UW restricted, 1996. http://hdl.handle.net/1773/11513.
Full textCaleiro, Giovana Santos. "Investigação da presença do retrovírus da Reticuloendoteliose aviária (REV) e do anticorpo IgG do vírus Oeste do Nilo (WNV) em aves." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/99/99131/tde-04092018-090320/.
Full textBirds can carry a large number of pathogens. The migratory birds are most responsible for the spread of infectious agents due to long distance travels. Among these pathogens, the most notable are viruses, such as the avian Reticuloendotheliosis retrovirus (REV), widely distributed; and the West Nile virus (WNV), a reemerging zoonotic disease. The main symptoms of avian reticuloendotheliosis include anemia, Runting\'s disease and acute nonneoplastic syndrome. The etiological agent of West Nile fever is Flavivirus West Nile (WNV). Birds are their definitive hosts and humans are accidental hosts, which generaly present febrile symptoms, but at less proportion,, meningitis and encephalitis. Mosquitoes of the genus Culex and Aedes spp are the main vectors of the virus. Differently from the REV that has no evidence of its circulation in Brazil, there is evidence of WNV in birds and horses and more recently in humans. The objective of this work was to investigate the presence of REV and WNV in wild birds and captive birds from the city of São Paulo and Northern from Pará State. Blood, serum and cloacal swab were collected, resulting in more than 1000 samples. Through molecular techniques it was possible to detect the presence of REV in 74 samples (16%), all from the State of Pará. The partial sequencing of these samples and their phylogeny suggested that the migration of US-Brazil may have been the route for the virus entry. Through anti-WNV IgG ELISA, 4 samples from São Paulo were positive. We present the first evidence of REV in the country and suggest the presence of WNV in the state of São Paulo.
Meiering, Christopher David. "The complexity of persistent foamy virus infection /." Thesis, Connect to this title online; UW restricted, 2002. http://hdl.handle.net/1773/11527.
Full textBoulton, Victoria J. "An investigation into the effect of myristoylation on the interactions between HIV-1 NEF and cellular proteins." Thesis, University of Glasgow, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.244253.
Full textBagalb, Hussein Saeed. "Cellular and molecular biological studies of a retroviral induced lymphoma transmitted via breast milk in a mouse model." Connect to full text in OhioLINK ETD Center, 2008. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=mco1225294363.
Full text"In partial fulfillment of the requirements for the degree of Master of Science in Biomedical Sciences." Title from title page of PDF document. Bibliography: pages 82-88, 111-116.
Cheynier, Rémi. "Electrotransfection de cellules eucaryotes : expression du retrovirus hiv par des cellules lymphoides humaines apres electrotransfection." Paris 6, 1987. http://www.theses.fr/1987PA066046.
Full textVan, Hoeven Neal Scott. "The role of cellular factors in modulation of entry by ovine betaretroviruses and murine gammaretroviruses /." Thesis, Connect to this title online; UW restricted, 2005. http://hdl.handle.net/1773/5102.
Full textKabdulov, Timur O. "Mechanisms of retroviral replication." Morgantown, W. Va. : [West Virginia University Libraries], 2001. https://etd.wvu.edu/etd/controller.jsp?moduleName=documentdata&jsp%5FetdId=2256.
Full textPrats, Anne-Catherine. "Etude de l'expression genetique et de la constitution des particules virales infectieuses chez le retrovirus murin mulv." Toulouse 3, 1988. http://www.theses.fr/1988TOU30172.
Full textFratini, Paula. "Expressão do vetor retroviral pCLPG medido em receptores de transplante de medula óssea." Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/87/87131/tde-13082009-103143/.
Full textThe retroviral vector is a widely used gene transfer tool in both laboratory assays and clinical trials. Our laboratory developed a new vector, called pCLPG, with viral expression under the command of p53, a tumor suppressor and inducible activator of transcription, with the aim of establishing a vector with high level expression. The level of expression offered by the pCLPG system was superior to the non-modified vector in cell culture assays. In this project, our objective was to characterize the expression of the pCLPG vector in vivo utilizing an animal model where bone marrow cells (BMC) from C57BL/6 mice are transduced and then transplanted in recipient animals that have been previously irradiated in order to abolish the hematopoietic system. With the aim of observing sustained transgene expression in vivo, we standardized serial BMC transplantation, transduction with retroviral vectors and analyzed the eGFP reporter gene by flow cytometry and real time PCR, and also studied other tissues, such as spleen, thymus and peripheral blood. We also performed hematologic analyses in the transplanted animals in to observe possible adverse events related to the presence of the retrovirus.These assays did not reveal a significant difference between the performances of the parental pCLeGFP vector and pCLPGeGFP. Both the number of eGFP-positive cells and the intensity of reporter gene expression diminished during the serial transplant process. Expression was observed in 3-4%, 2-3% or 2-3% of cells recovered from bone marrow of the primary, secondary or terciary recipients of BMC transduced with the pCLeGFP vector, but not in peripheral blood, thymus or spleen. Similarly, eGFP-positive cells (6-7%, 4-4.5% or 3-3.5%) were observed after serial transplantation only in the bone marrow of animals that received BMC transduced with the pCLPGeGFP vector. However, peripheral blood was recovered from recipients and treated with 5-azacytidine, inducing the expression of eGFP from both vectors in approximately 4% of these cells, implying that viral silencing may have been related with methylation. This study demonstrated that the modifications in the promoter of the pCLPG vector were not sufficient to avoid silencing of viral expression in this model.
Loiler, Scott A. "In Vitro and in vivo Studies of Murine Polytropic Retrovirus Infections: a Dissertation." eScholarship@UMMS, 2000. https://escholarship.umassmed.edu/gsbs_diss/119.
Full textSvarovskaia, Evguenia S. "Structural determinants of murine leukemia virus reverse transcriptase that are important for template switching, fidelity, and drug-resistance." Morgantown, W. Va. : [West Virginia University Libraries], 2000. http://etd.wvu.edu/templates/showETD.cfm?recnum=1538.
Full textTitle from document title page. Document formatted into pages; contains xi, 185 p. : ill. (some col.). Vita. Includes abstract. Includes bibliographical references.
Gaudray, Gilles. "Implication de l'hétérodimérisation de CREB-2 dans la régulation de la transcription du génome du virus de la leucémie T humaine de type-I, HTLV-I." Montpellier 1, 2003. http://www.theses.fr/2003MON1T010.
Full textFreimanis, Graham L. "The detection and role of human endogenous retrovirus K (HML-2) in rheumatoid arthritis." Thesis, University of Wolverhampton, 2008. http://hdl.handle.net/2436/41777.
Full textPiver, Eric. "Mobilisation hétérologue de vecteurs dérivés du virus de la forêt de Semliki." Tours, 2006. http://www.theses.fr/2006TOUR3314.
Full textClerc, Isabelle. "Etude de la transcription antisens et fonctions des protéines associées chez les virus HTLV et VIH-1." Montpellier 1, 2009. http://www.theses.fr/2009MON1T021.
Full textGenome of retrovirus exists in two different forms : either as a simngle stranded RNA being translated or encapsidated, or as a double stranded DNA integrated in the genome of the infected host cell. This latter form, also termed proviral DNA, is crucial for the production of all viral mRNAs necessary for the synthesis of the various viral proteins, which in turn involves the promoter region localised in the 5'LTR (Long Terminal Repeat). However, proviral DNA also possesses a second LTR as its 3' end, capable of regulating a type of trnascription known as antisense. Interestingly, in the case of the Human T-cell Leukemia Virus type 1 (HTLV-1), this antisense transcription is involved in the production of a bZIP-containing transcription factor termed HBZ for HTLV-1 bZIP factor. We demonstrate here that HBZ inhibits c-Jun transcriptional activity in vivo by sequestration of c-Jun to nuclear bodies. In addition, we show that HBZ interacts with p300/CBP and provide evidence that this interaction interferes with the ability of Tax to bind p300/CBP and thereby inhibits the association of the coactivators with the viral promoter. These results support a role for HBZ in facilitating HTLV-1 persistence in the infected host by negatively controlling viral expression. We have also accumulated new results demonstrating that antisense transcripts exist in HTLV-2 and HIV-1. Furthermore, our data present strong evidence for the existence of encoded proteins from these antisense transcripts. On the basis of these interesting results, our hypothesis is that antisense transcription is involved in the production of viral proteins with important functions in the retroviral life cycle
SONGO, PIERRE. "Sida : analyse genomique des retrovirus hiv 1 et 2, siv, visna et mpmv." Paris 7, 1988. http://www.theses.fr/1988PA077157.
Full textLambert, Caroline. "Les anticorps neutralisants contre l'infection des virus foamy simiens chez l'homme." Thesis, Sorbonne Paris Cité, 2016. http://www.theses.fr/2016USPCC328/document.
Full textSimian foamy virus (SFV) are the third family of exogenous complex retroviruses infecting humans. These viruses, of origins, are transmitted by body fluids (mainly saliva), through a direct contact between an individual and an infected m establish a chronic infection in the infected human host. To date, neither pathology, nor secondary transmission has be to be associated with SFV infection in humans. Therefore, SFV represents a natural model of restriction emerging simiar in humans. During my PhD, I characterized the humoral response against SFV in people living in Cameroon and Gabon, mainly infected bites during hunting episodes. I showed the presence of SFV neutralizing antibodies in the plasma of 48 infected individ titers. Our study population is infected with viruses of 2 different genotypes, which differ in the central region of the En region involved in binding to the cellular receptor.While in 60% of cases, neutralizing response was specific to a single genotype, 40% of cases showed cross-reactivity. Cr( was associated in 50% of cases with co-infection with viruses from both genotypes.In conclusion, my PhD is the first study to characterize neutralizing antibodies in individuals chronically infected with a zoonotic SFV : these antibodies are frequently detected at high titers and are directed against epitopes commonly found in chimpanzee and gorilla SFV
Bruland, Torunn. "Studies of early retrovirus-host interactions. Viral determinants for pathogenesis and the influence of sex on the susceptibility to Friend murine leukaemia virus infection." Doctoral thesis, Norwegian University of Science and Technology, Faculty of Medicine, 2003. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-534.
Full textThe studies in the present thesis sought to define virus and host factors that can influence on the susceptibility to murine retrovirus infection. In addition, we wanted to study possible correlations between events of early infection and subsequent disease progression. For an extensive discussion of the major findings, the reader is referred to papers I-IV. The following section will give a general discussion concerning 1) some methodological aspects; 2) the course of FIS-2 infection; 3) determinants responsible for erythroleukaemia; 4) determinants responsible for immunosuppression; and, 5) does sex matter?
Gachon, Frédéric. "Régulation de la transcription par l'oncoprotéine Tax de HTLV-I." Montpellier 1, 2001. http://www.theses.fr/2001MON1T007.
Full textLe, Bousse-Kerdiles Caroline. "Etude physiopathologique du syndrome myeloproliferatif provoque par le virus sarcomatogene myeloproliferatif murin : mise en evidence d'une activite stimulant la proliferation et la differenciation des cellules souches hematopoietiques pluripotentes." Paris 7, 1987. http://www.theses.fr/1987PA077220.
Full textDjilali, Soufiane. "L'infection experimentale du mouton par le virus leucemogene bovin : etude immuno-hematologique, pathologique et virologique." Paris 6, 1988. http://www.theses.fr/1988PA066208.
Full textSouyri-Caporale, Michèle. "Etude du pouvoir tumorigene de l'oncogene n-ras." Paris 7, 1987. http://www.theses.fr/1987PA077083.
Full textVoronin, Yegor A. "Investigation of initiation of reverse transcription in retroviruses using vectors with two primer-binding sites." Morgantown, W. Va. : [West Virginia University Libraries], 2003. http://etd.wvu.edu/templates/showETD.cfm?recnum=3136.
Full textGollan, Timothy J. "Altering the Tropism of Retroviral Vectors For In Vivo Gene Therapy: Pseudotyped Virus Targeting by Ligand-Receptor Interactions: A Dissertation." eScholarship@UMMS, 2002. http://escholarship.umassmed.edu/gsbs_diss/226.
Full textDixon, Vincent. "Etudes sur la correlation entre l'etat differencie des cellules cibles b et l'infection par le virus de la leucemie aviaire (alv)." Paris 7, 1988. http://www.theses.fr/1988PA077212.
Full textDELLA-VALLE, VERONIQUE. "1) etude moleculaire et physiopathologique des virus mcf isoles de proliferations malignes induites chez la souris par le virus auxiliaire de la leucemie de friend (f-mul v) : 2) les autoanticorps : un outil essentiel de la biologie cellulaire." Paris 6, 1988. http://www.theses.fr/1988PA066675.
Full textPéneau, Camille. "Mécanismes moléculaires et conséquences oncogéniques des intégrations du Virus de l’Hépatite B dans les tissus hépatiques." Thesis, Université de Paris (2019-....), 2020. https://theses.md.univ-paris-diderot.fr/PENEAU_Camille_va2.pdf.
Full textDespite the existence of an effective vaccine and of treatments that suppress viral replication, Hepatitis B Virus (HBV) infection remains one of the most frequent chronic diseases. 39% of HBV-related deaths are associated with the development of hepatocellular carcinoma (HCC), the most common primary liver cancer and the third leading cause of cancer death worldwide. HBV is indeed the main risk factor of HCC development in patients who generally already have a liver cirrhosis induced by the infection. However, the fact that some HBV-related HCC occur without chronic inflammation underlines the direct oncogenic properties of this DNA virus, which can promote hepatocyte cell transformation through integration into the human genome. This project aimed to describe the HBV genomes in tumor and non-tumor liver tissues from 177 patients, mostly with African and European origin, using viral capture and next-generation sequencing techniques, and characterized viral integrations according to the genetic and clinical data of the patients. We showed that non-tumor tissues contain more frequently replicating HBV DNA and a higher number of insertions, mainly located in open chromatin regions but without direct functional consequences. In tumors, on the other hand, HBV integrations are often clonal and enriched in proximity of genes involved in hepatocarcinogenesis such as TERT (in one-third of HBV-related HCC), CCNE1, or KMT2B, and can directly lead to tumor development by activating these genes in cis. HBV integrations in CCNA2 or CCNE1, for example, generate replicative stress and a specific signature of structural rearrangements, thus promoting the development of aggressive HCC in the absence of cirrhosis. We also described a novel oncogenic mechanism associated with HBV integrations based on rearrangements of the human genome delimited by integrated viral sequences, which induce copy number alterations of distant "driver" genes such as TP53 or MYC. We have therefore further characterized the viral integrations of HBV in HCC, but also those of the adeno-associated virus (AAV) which can also integrate into human DNA and promote tumor development through insertional mutagenesis by altering the same genes as HBV (TERT, CCNA2, CCNE1, KMT2B)
Crisanti-Lassiaz, Patricia. "Effets de rétrovirus aviaires sur la différenciation de la neurorétine d'embryons d'oiseaux en culture cellulaire." Paris 7, 1985. http://www.theses.fr/1985PA077021.
Full textBroders, Florence. "Analyse de la transcription des genes alpha globine dans les erythroblastes aviaires normaux et transformes par un retrovirus." Paris 7, 1988. http://www.theses.fr/1988PA077023.
Full textSola, Brigitte. "Transformation in vitro des cellules de la lignee myeloblastique par le virus leucemogene murin de friend (f-mulv) : analyse des mecanismes moleculaires de cette transformation." Paris 7, 1987. http://www.theses.fr/1987PA077242.
Full textSimonneau, Lionel. "Etude de l'expression des cristallines et de leurs proprietes aggregatives dans les cultures de cellules epitheliales de cristallin de boeuf et de la neurotine embryonnaire de caille normale ou transformee par des retrovirus aviaires." Paris 7, 1988. http://www.theses.fr/1988PA077154.
Full textLegrand, Alain. "Liposomes cibles et vecteurs retroviraux pour le transfert et l'expression du gene de la preproinsuline i de rat dans des cellules eucaryotes." Orléans, 1987. http://www.theses.fr/1987ORLE2011.
Full textLüftenegger, Daniel. "Einfluss posttranslationaler Modifikationen auf die Funktion des Prototyp Foamy Virus Hüllproteins." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2008. http://nbn-resolving.de/urn:nbn:de:bsz:14-ds-1207905094649-72075.
Full textLüftenegger, Daniel. "Einfluss posttranslationaler Modifikationen auf die Funktion des Prototyp Foamy Virus Hüllproteins." Doctoral thesis, Technische Universität Dresden, 2007. https://tud.qucosa.de/id/qucosa%3A23754.
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