نتایج جستجو برای: bovine leukemia virus

تعداد نتایج: 717882  

2014
Yongxiu Yao Lorraine P. Smith Venugopal Nair Mick Watson

To date, the vast majority of known virus-encoded microRNAs (miRNAs) are derived from polymerase II transcripts encoded by DNA viruses. A recent demonstration that the bovine leukemia virus, a retrovirus, uses RNA polymerase III to directly transcribe the pre-miRNA hairpins to generate viral miRNAs further supports the common notion that the canonical pathway of miRNA biogenesis does not exist ...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2005
Amine Achachi Arnaud Florins Nicolas Gillet Christophe Debacq Patrice Urbain Germain Manfouo Foutsop Fabian Vandermeers Agnieszka Jasik Michal Reichert Pierre Kerkhofs Laurence Lagneaux Arsène Burny Richard Kettmann Luc Willems

Leukemogenic viruses like human T-lymphotropic virus and bovine leukemia virus (BLV) presumably persist in the host partly by latent integration of the provirus in a fraction of infected cells, leading to accumulative increase in the outgrowth of transformed cells. Furthermore, viral infection also correlates with a blockade of the apoptotic mechanisms concomitant with an apparent latency of th...

2009
Arnaud Florins Michal Reichert Becca Asquith Amel-Baya Bouzar Geneviève Jean Carole François Agnieszka Jasik Arsène Burny Richard Kettmann Luc Willems

Infection by delta-retroviruses such as human T-lymphotropic virus type 1 (HTLV-1) and bovine leukemia virus (BLV) is mostly asymptomatic. Indeed, only a minority (<5%) of delta-retrovirus infected hosts will develop either lymphoproliferative or neurodegenerative diseases after long latency periods. In fact, the host immune response is believed to tightly control viral replication but this ass...

Journal: :Journal of virology 1983
M A Morgan T D Copeland S Oroszlan

The nucleic acid-binding proteins of bovine leukemia virus (BLV) and feline leukemia virus (FeLV) were isolated in a high state of purity with chloroform-methanol extraction followed by reversed-phase liquid chromatography. Selective solubilization and purity of BLV p12 and FeLV p10 was confirmed by sodium dodecyl sulfate-polyacrylamide gel electrophoresis. The compositions and molecular weight...

2012
Lorraine Sordillo

Introduction Bovine Leukosis Virus (BLV) is a retroviral infection that causes leukemia in cattle by targeting white blood cells and causing them to grow uncontrollably. Most BLV-infected cattle seldom present with outward clinical signs. Approximately 30% of infected animals, however, will have abnormally high white blood cell counts and up to 5% will develop malignant tumors or lymphosarcomas...

Razi Jafari, Reza Asadpour

Bovine Leukemia ProVirus: Evidence of Presence of Part of Gag Gene in Seminal Plasma of Naturally Infected Bulls It is of critical importance to understand the modalities of BLV presence in semen, especially with regard to artificial insemination (AI). Presence of bovine leukemia provirus was demonstrated in fresh and frozen semen samples by researchers. In this study paired blood and semen sam...

2005

Viruses have been regarded as substantial candidates for the aetiology of Cancer in man since the demonstration that the prime factors in the pathogenesis of naturally occurring leukemias in certain domestic animals were viruses of what is now known as the retrovirus group. Early in this century leukosis in domestic poultry was shown experimentally to be infectious and enzootic bovine leukosis ...

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