Bovine Papillomavirus Type 4
Mostrando 1-12 de 51 artigos, teses e dissertações.
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1. Complete genome sequence of Deltapapillomavirus 4 (bovine papillomavirus 2) from a bovine papillomavirus lesion in Amazon Region, Brazil
The complete genome sequence of bovine papillomavirus 2 (BPV2) from Brazilian Amazon Region was determined using multiple-primed rolling circle amplification followed by Illumina sequencing. The genome is 7,947 bp long, with 45.9% GC content. It encodes seven early (E1, E2,E4, E5, E6,E7, and E8) and two late (L1 and L2) genes. The complete genome of a BPV2 c
Mem. Inst. Oswaldo Cruz. Publicado em: 2016-04
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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. AvaliaÃÃo de aberraÃÃes cromossÃmicas em bovinos (Bos taurus taurus) infectados pelo papilomavÃrus bovino
Bovine papillomavirus (BPV) is represented by 10 papillomavirus subtypes, epiteliotropic or mucosotropic, which are transmitted among bovines through contaminated blood and ephitelial contact. This virus may be in a latent form on host lymphocytes, triggering chromosomal instabilities. In this context, this study aimed to evaluate chromosomal aberrations whi
Publicado em: 2009
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4. 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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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. NEOPLASIAS DO TRATO ALIMENTAR SUPERIOR EM BOVINOS ASSOCIADAS AO CONSUMO ESPONTÂNEO DE SAMAMBAIA (Pteridium aquilinum) / NEOPLASMS OF THE UPPER DIGESTIVE TRACT OF CATTLE ASSOCIATED TO SPONTANEOUS INTAKE OF BRACKEN FERN (Pteridium aquilinum)
Foram estudados 30 bovinos com neoplasias no trato alimentar superior (TAS) associadas ao consumo espontâneo de samambaia (Pteridium aquilinum) provenientes de 27 propriedades rurais, sendo 23 no município de Jaguari e quatro em Nova Esperança de Sul, Rio Grande do Sul. A população bovina total das 27 propriedades em que ocorreram os casos era de 1.090
Publicado em: 2005
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9. Mutational analysis of open reading frame E4 of bovine papillomavirus type 1.
Open reading frame (ORF) E4 is a 353-base-pair ORF of bovine papillomavirus type 1. To determine the biological activities of this ORF in mouse C127 cells, we analyzed the effects of two constructed mutations which are predicted to prevent synthesis of ORF E4 proteins while leaving the amino acid sequence encoded by the overlapping ORF E2 unchanged. Neither
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10. Two cellular single-strand-specific DNA-binding proteins interact with two regions of the bovine papillomavirus type 1 genome, including the origin of DNA replication.
We have identified and purified to near homogeneity two specific single-stranded DNA-binding factors (SPSF I and II) with molecular masses of 42 and 39 kDa, respectively, from calf thymus. Gel retention analysis and competition experiments demonstrate that the ubiquitous proteins SPSF I and II specifically interact with single-stranded DNA derived from the m
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11. The bovine papillomavirus type 4 E8 protein binds to ductin and causes loss of gap junctional intercellular communication in primary fibroblasts.
The E8 open reading frame of bovine papillomavirus type 4 encodes a small hydrophobic polypeptide which contributes to cell transformation by conferring anchorage-independent growth. Using an in vitro translation system, we show that the E8 polypeptide binds to ductin, the 16-kDa proteolipid that forms transmembrane channels in both gap junctions and vacuola
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12. A Novel Silencer Element in the Bovine Papillomavirus Type 4 Promoter Represses the Transcriptional Response to Papillomavirus E2 Protein
The long control regions (LCRs) of mucosal epitheliotropic papillomaviruses have similar organizations: a promoter region, an enhancer region, and a highly conserved distribution of E2 DNA binding sites (C. Desaintes and C. Demeret, Semin. Cancer Biol. 7:339–347, 1996). The enhancer of these viruses is epithelial cell specific, as it fails to activate tran
American Society for Microbiology.