Bovine Papillomaviruses
Mostrando 1-12 de 76 artigos, teses e dissertações.
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1. Papillomaviruses: a systematic review
Abstract In the last decades, a group of viruses has received great attention due to its relationship with cancer development and its wide distribution throughout the vertebrates: the papillomaviruses. In this article, we aim to review some of the most relevant reports concerning the use of bovines as an experimental model for studies related to papillomavir
Genet. Mol. Biol.. Publicado em: 16/02/2017
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2. Phylogenetic position of an uncharacterized Brazilian strain of bovine papillomavirus in the genus Xipapillomavirus based on sequencing of the L1 open reading frame
The use of PCR assays with degenerate primers has suggested the existence of numerous as yet uncharacterized bovine papillomaviruses (BPV). Despite the endemic nature of BPV infections, the identification of BPV types in Brazilian cattle is still only sporadic. However, in a recent analysis of a partial segment of the L1 gene, we observed notable diversity a
Genetics and Molecular Biology. Publicado em: 12/11/2010
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3. IdentificaÃÃo e avaliaÃÃo da presenÃa de PapilomavÃrus bovino (BPV) em sangue de bovinos e cultura de linfÃcitos em uma fazenda leiteira do estado de Pernambuco
Bovine papillomaviruses (BPVs), family Papillomaviridae, act as causal agent of warts, bladder and digestive tract cancers, causing significant losses to the cattle economy. Ten types of BPVs have been well characterized (BPV-1-10). This study has as main objective to evaluate sequences of BPV genomes in blood samples collected in a dairy farm in Pernambuco
Publicado em: 2009
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4. AvaliaÃÃo da presenÃa de PapilomavÃrus bovino em sÃmen de touros (Bos taurus)
Papillomaviruses (PV) are viruses that contain double strand DNA and can infect the squamous epithellium of the skin and mucosa. There are 10 different types of BPV (BPV-1 to 10) and they can cause serious diseases in dairy herds or cutting, creating great economic losses to farmers in Brazil and other countries. The presence of BPV has been detected in repr
Publicado em: 2009
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5. IdentificaÃÃo dos tipos de PapilomavÃrus presentes em lesÃes cutÃneas de bovinos afetados por papilomatose
Papillomaviruses are a wide viruses family associated to epiteliotropic lesions and affecting also mucous tissues, causing benign tumors that can suffer malignization. The bovine papilomatosis is an economicaly important desease, since undervaluate cattle to be selled out. Although epidemiological data are unavailable, based on local farmers the incidence of
Publicado em: 2008
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6. Identificação e estudo da diversidade do papilomavírus associado a lesões cutâneas em bovinos
Papillomaviruses (PV) has a worldwide distribution and is recognized as an etiologic agent associated with several benign and malignant epithelia lesions in human and animals. The Papillomaviridae family is a highly heterogeneous group of viruses, which has 18 genera, and likely occurs in most mammals and birds. The PV genome is circular double-stranded DNA
Publicado em: 2008
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7. Caracterização molecular do gene L1 de um provável novo tipo de papilomavírus bovino identificado no Brasil
Papillomaviruses (PVs) comprise a highly diverse group of non-enveloped oncovirus classified in Papillomaviridae family, whose genome consists of a circular double-stranded DNA molecule. Depending on nucleotide identity presented in structural protein L1, 10 types of bovine papillomavirus (BPV) are described in cattle, being each of them located in genera De
Publicado em: 2008
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8. Enhancers and trans-acting E2 transcriptional factors of papillomaviruses.
The upstream regulatory regions of human papillomavirus (HPV) types 1, 6b, 7, 11, 16, and 18, bovine papillomavirus type 1, and cottontail rabbit papillomavirus were cloned into transcriptional enhancer assay plasmids which carry the simian virus 40 early promoter lacking its own enhancer and the bacterial gene encoding chloramphenicol acetyltransferase (EC
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9. Antibody-mediated neutralization in vivo of infectious papillomaviruses.
Specific antibody-mediated neutralization of infectious human papillomavirus type 11 (HPV-11) was achieved in the athymic mouse xenograft system, in which HPV-11 induced morphological transformation of human foreskin. Virus-specific neutralization was demonstrated by the ability of an HPV-11-specific polyclonal antiserum to neutralize HPV-11 infectivity and
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10. Structural polypeptides of rabbit, bovine, and human papillomaviruses.
The number and apparent molecular weight of the structural polypeptides of Shope rabbit papilloma virus (RPV), bovine papilloma virus (BPV), and human papilloma virus (HPV) were estimated by sodium dodecyl sulfate-polyacrylamide gel electrophoresis. Up to 10 polypeptides were detected in highly purified BPV and HPV full particles; a close homology was found
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11. Viral E1 and E2 proteins support replication of homologous and heterologous papillomaviral origins.
We have shown that E1 and E2 proteins of human papillomavirus type 11 (HPV-11) were essential to support the replication of the homologous viral origin (ori) in a transient replication assay, similar to reports on bovine papillomavirus type 1 (BPV-1). Unexpectedly, matched or even mixed combinations of E1 and E2 proteins from HPV-11 or BPV-1 replicated eithe
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12. A Broad-Spectrum Microbicide with Virucidal Activity against Sexually Transmitted Viruses
Sodium dodecyl sulfate (SDS), an alkyl sulfate surfactant derived from an organic alcohol, possesses surfactant properties but also denatures and unfolds both monomeric and subunit proteins. In preliminary experiments, we demonstrated that SDS is a potent inactivator of herpes simplex virus type 2 and human immunodeficiency virus type 1 at concentrations com
American Society for Microbiology.