Papilloma Viruses
Mostrando 1-12 de 23 artigos, teses e dissertações.
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1. 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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2. Marcadores biomoleculares de lesões epiteliais escamosas genitais pre-invasivas
Objetivos: Estudar a importância de determinados marcadores de diagnóstico e prognóstico de lesões escamosas genitais, com ênfase nos estudos de p16INK4a e HPV de alto risco. Material e Métodos: Marcadores tumorais foram revisados em 21 estudos publicados entre 1994 e 2005, no sentido de identificar aqueles que teriam melhor valor diagnóstico e/ou pro
Publicado em: 2007
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3. Detection of human papilloma viruses in paraffin wax sections with biotinylated synthetic oligonucleotide probes and immunogold staining.
Human papilloma virus was detected by in situ hybridisation in routinely processed paraffin wax sections using a synthetically produced oligonucleotide probe, end-labelled with biotin, and amplified with anti-biotin-immunogold silver staining (anti-biotin-IGSS). This system proved more sensitive than amplification with streptavidin-biotinylated alkaline phos
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4. Chemical Studies on Polyoma and Shope Papilloma Viruses
Polyoma and Shope papilloma viruses were purified and analyzed by chemical and physical methods. Disc electrophoresis of degraded virions indicated the presence, in both cases, of only one major species of polypeptide subunit. The weight of the peptide chain of polyoma virus was estimated in 8 m urea to be about 45,000 avograms, based on the sedimentation ra
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5. Demonstration of papilloma virus particles in cervical and vaginal scrape material: a report of 10 cases.
The finding of virus particles by transmission electron microscopy (TEM) in fixed cervical and vaginal scrape material and their identification as papilloma viruses by negative staining is described. The colposcopic, cytological, and histological appearances in a group of 10 patients in whom virus particles were seen are discussed and the possibly considered
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6. Cloning of human papilloma virus genomic DNAs and analysis of homologous polynucleotide sequences.
The complete DNA genomes of four distinct human papilloma viruses (human papilloma virus subtype 1a [HPV-1a], HPV-1b, HPV-2a, and HPV-4) were molecularly cloned in Escherichia coli, using the certified plasmid vector pBR322. The restriction endonuclease patterns of the cloned HPV-1a and HPV-1b DNAs were similar to those already published for uncloned DNAs. P
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7. Human papilloma viruses and cervical tumours: mapping of integration sites and analysis of adjacent cellular sequences
BioMed Central.
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8. The upstream regulatory region of the human papilloma virus-16 contains an E2 protein-independent enhancer which is specific for cervical carcinoma cells and regulated by glucocorticoid hormones.
The upstream regulatory region of the human papilloma virus-16 (HPV-16) genomic DNA contains a sequence element with a large degree of homology to the partially palindromic sequence GGTACANNNTGTTCT, which is the consensus sequence of the glucocorticoid responsive elements of known genes regulated by this steroid hormone. DNase I and dimethylsulfate protectio
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9. Lung cancer in the meat industry.
Routine statistics of occupational mortality and incidence of cancer have consistently shown high rates of lung cancer in butchers. Possible explanations include infection by carcinogenic papilloma viruses, exposure to polycyclic aromatic hydrocarbons and nitrites in the preservation of meat, or a confounding effect of tobacco. To explore these possibilities
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10. Trans-activation of the human immunodeficiency virus long terminal repeat sequence by DNA viruses.
To investigate whether DNA viruses can augment gene expression of the human immunodeficiency virus (HIV), cotransfection experiments were carried out in which a recombinant plasmid containing the HIV long terminal repeat (LTR) linked to the chloramphenicol acetyltransferase (CAT) gene was transfected into cultured cells along with plasmids containing DNA fro
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11. Relation between retinoblastoma and p53 proteins in human papilloma viruses 16/18 positive and negative cancers of the uterine cervix.
AIM: To ascertain the extent of retinoblastoma protein (pRB) expression in comparison to p53 protein and human papilloma viruses (HPV) 16/18 status in cervical carcinomas. METHODS: Fifty cases of invasive cervical carcinoma were HPV typed for genotypes 16 and 18 using consensus primers by polymerase chain reaction (PCR). Immunohistochemistry for pRB and p53
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12. 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