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Academic literature on the topic 'Leucose bovine enzootique – Dépistage'
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Journal articles on the topic "Leucose bovine enzootique – Dépistage"
Prevost, P., M. Eloit, and B. Toma. "Dépistage de la leucose bovine enzootique par le test elisa appliqué au lactoserum concentré de tank." Journal of Biological Standardization 16, no. 2 (January 1988): 91–97. http://dx.doi.org/10.1016/0092-1157(88)90036-4.
Full textEloit, Marc, Bernard Toma, Aimé Vuillaume, Christiane Duret, and André Parodi. "Dépistage de la leucose bovine enzootique par le test elisa appliqué au lait de mélange: étude d'un modèle théorique." Journal of Biological Standardization 14, no. 1 (January 1986): 67–74. http://dx.doi.org/10.1016/s0092-1157(86)80010-5.
Full textTOMA, B., M. ELOIT, and M. SAVEY. "Les maladies animales à retrovirus : leucose bovine enzootique, anémie infectieuse des équidés, arthrite/encephalite caprine." Revue Scientifique et Technique de l'OIE 9, no. 4 (December 1, 1990): 983–1119. http://dx.doi.org/10.20506/rst.9.4.531.
Full textSilva Junior, Francisco Feliciano da, José Andreey Almeida Teles, Fábio Denilson de Oliveira Feliciano, and Gil Dutra Furtado. "SOROPREVALENCE POUR LA LEUCOSE ENZOTIQUE BOVINE DANS LE CHEPTEL LAITIER DE ‘SERTÃO’ DE L'ETAT D'ALAGOAS, NORD-EST DU BRÉSIL." ENVIRONMENTAL SMOKE 2, no. 1 (May 7, 2019): 67–77. http://dx.doi.org/10.32435/envsmoke.20192167-77.
Full textDissertations / Theses on the topic "Leucose bovine enzootique – Dépistage"
Perrin, Bernard. "Le dépistage sérologique de l'infection par le virus de la leucose bovine enzootique (BLV) en vue de l'éradication de la maladie : évolution de la situation épidémiologique en France." Lyon 1, 1990. http://www.theses.fr/1990LYO10056.
Full textPortetelle, Daniel. "Leucose bovine enzootique et virus de la leucémie bovine. Contribution à la mise en place d'une stratégie de lutte." Doctoral thesis, Universite Libre de Bruxelles, 1990. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/213098.
Full textMorisson, Mireille. "Les glycoprotéines d'enveloppe du rétrovirus BLV : étude de trois épitopes conformationnels inducteurs d'anticorps neutralisants." Bordeaux 2, 1992. http://www.theses.fr/1992BOR28198.
Full textPomier, Carole. "Aspects moléculaires du stade précoce de l'infection expérimentale du mouton par le virus de la leucémie bovine et implications sur la leucémogenèse associée au deltarétrovirus." Lyon 1, 2006. http://www.theses.fr/2006LYO10314.
Full textThe replication of oncogenic deltaretroviruses at the chronic stage of infection is achieved mainly through clonal expansion of infected cells on a background of genetic instability induced by the viral oncoprotein Tax. In the sheep model experimentally infected with BLV, the cells from which the tumor arises, can be distinguished at early infection stages on the basis of their degree of proliferation and genetic instability. The acute stage of infection has been characterized by a B lymphocytosis, partly responsible for the increased proviral load. It was associated with a high level of viral genetic variability induced by steps of reverse transcription and by somatic processes. The first phase appeared to be restricted to the first months post-inoculation whereas the second phase prevailed throughout the infection. The oncogenicity of the deltaretrovirus was related to the overall number of circulating infected clones and of provirus rearrangements detected at the stage of primary infection
Ivanova, Svilena. "Glycoprotéines d'enveloppes (Env) des gamma- et delta-rétrovirus et leurs récepteurs : recherche chez les mammifères de nouveaux récepteurs d'Env associés au métabolisme cellulaire et d'Env endogènes apparentées." Thesis, Montpellier, 2015. http://www.theses.fr/2015MONTT052.
Full textRetroviruses are enveloped, single-stranded RNA viruses, that are omnipresent in animals and the causal agents of a large array of pathologies. Vertebrate retroviruses are divided into seven genera, including the γ and -retroviral groups, which we study particularly. Endogenous retroviruses (ERV), as opposed to exogenous infectious viruses, are present in germline cells and as such are bona fide components of the host genome, with Mendelian transmission. Most ERV have been inactivated by purifying mutations during evolution, although a few copies have been subjected to positive selection pressure with conserved open reading frames (ORFs).Exogenous viruses and ERV that belong to gamma and deltaretroviruses share similar genetic organization and their envelope glycoproteins (Env) comprises a transmembrane (TM) and a surface (SU) component, which binds a specific receptor on the host cell membrane. The SU contains a receptor-binding domain (RBD), responsible for receptor recognition, while TM engages membrane fusion and harbors an immunosuppressive domain. Noticeably, some ERVs have maintained entire or partial ORFs in env, which have been shown, in certain cases, to have essential physiological functions.Another common feature of gamma and deltaretroviral Env is the nature of their receptors, which, when identified, all belong to the solute carrier family of nutrient transporters (SLCs). The laboratory derived soluble RBDs from complete Env that can bind cognate receptors and be used to monitor SLC receptor expression at the cell surface. This important property of RBDs overcomes the notorious lack of reliable anti-SLC exofacial antibodies and provides a new way to evaluate, or even modulate, cell metabolism.Our laboratory postulates that some endogenous RBD-coding genes have been positively selected in their hosts for properties linked to binding SLCs and modulating host cell metabolism. In this context, the aim of my work was to: (i) search for new natural endogenous RBDs and (ii) characterize SLC transporters recognized by RBDs derived from ERVs or exogenous infectious mammalian retroviruses.Here, we describe the identification of two novel human endogenous RBDs (HERV-41 and HERV-89), which each harbor a significant ORF. We estimated that both RBDs have been introduced into Old World primate genomes 35 MYA ago, after the separation with New World monkeys. HERV-89 and HERV-41 are included within retroviral elements that comprise potential primer binding sites (PBS) complementary to tRNALeu or tRNAArg, for HERV-89, and tRNAGlu, for HERV-41. The envs of HERV-89 and HERV-41 do not share more than 38% and 69% amino acid identity with the closest known HERVs, respectively, which indicates that they belong to two new Env families. We derived a soluble HERV-89 RBD and monitored its receptor cell and tissue distribution. Using the ligand by flow cytometry, we observed that a HERV-89 receptor is expressed in a large panel of established cell lines and stem cells. Immunohistochemistry on 94 healthy and tumor human tissue samples showed that HERV-89 receptor is largely distributed, with distinct expression patterns in healthy and tumor tissues. In parallel, we derived a 170 gene-containing SLC expression library for high throughput screening of SLC/ligand interactions. Using this partial human SLC library, we identified the long-sought receptor for bovine leukemia virus (BLV). Moreover, transfection of a cDNA library expression into hamster cells, led us to identify CTR1/SLC31A1, the copper and cisplatin transporter, as the receptor for the feline ERV-DC14/FeLV-D.As a ligand for the BLV receptor, BLV-RBD may be used to help controlling BLV transmission and prevent associated pathologies that affect 5% of infected cattle. Also, BLV-RBD and DC14-RBD can now be used as metabolic markers and modulators of their SLC cognate receptors, including copper metabolism, in the case of DC14-RBD