Dna Viruses
Mostrando 1-12 de 2724 artigos, teses e dissertações.
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1. A survey of RNA genome viruses in Lima bean crops of Northeastern Brazil
ABSTRACT Lima bean plants showing mosaic and leaf distortion symptoms, similar to those induced by viruses, were observed in several production areas in the states of Ceará and Piauí, Northeastern Brazil. The aim of this study was to identify RNA genome viruses that infect lima bean. Field research was conducted from 2017 to 2018. Fifty-five symptomatic sa
Bragantia. Publicado em: 2020-09
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2. Infecção latente pelo herpesvírus bovino tipo 1 em búfalos (Bubalus bubalis) no Rio Grande do Sul
RESUMO Apesar dos bovinos serem considerados os hospedeiros naturais do BoHV-1, estudos sorológicos têm sugerido que búfalos podem ser suscetíveis ao BoHV-1 e a outros alfa-herpesvírus geneticamente relacionados. O objetivo deste estudo foi detectar a presença de DNA viral de BoHV-1 em 202 amostras de gânglios trigêmeos de búfalos, pela técnica de
Arq. Bras. Med. Vet. Zootec.. Publicado em: 10/10/2019
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3. Target Search for Transcription Factors on DNA Chains
RESUMO Entre muitas estruturas presentes nas células dos seres vivos, existem proteínas chamadas fatores de transcrição (FT) que são responsáveis por inibir ou promover a transcrição do ADN. Para realizar sua função, os fatores de transcrição executam buscas aleatórias ao redor do citoplasma (para células procarióticas) e ao longo da cadeia de
TEMA (São Carlos). Publicado em: 16/09/2019
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4. Polyomaviruses BK and JC DNA infection in peripheral blood cells from blood donors
ABSTRACT Objectives: To investigate the prevalence of human polyomavirus (BK and JC viruses) infection in peripheral blood mononuclear cells of healthy blood donors. Methods: The study included 250 healthy blood donors. Five-milliliter blood was drawn into sterile EDTA tubes and PBMCs were isolated from whole blood. The isolated PBMCs were counted and stor
Braz J Infect Dis. Publicado em: 20/05/2019
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5. Genotypes of clinical varicella-zoster virus isolates from Manaus, Brazil
Abstract INTRODUCTION: Vaccination against varicella-zoster virus (VZV) has been effective and safe in countries that routinely administer the vaccine. Brazil began universal VZV vaccination in 2013. This study aimed to identify VZV genotypes present in Manaus, Brazil prior to widespread immunization. METHODS: Vesicular lesions or cerebral-spinal-fluid sam
Rev. Soc. Bras. Med. Trop.. Publicado em: 16/05/2019
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6. Bovine alphaherpesvirus 1 and 5 in semen from bulls presenting genital lesions under field conditions in Brazil
RESUMO Os alfa-herpesvírus bovinos 1 e 5 (BoHV-1/5) são importantes patógenos de doença respiratória, reprodutiva e neurológica em bovinos. O objetivo deste estudo foi investigar a frequência de detecção de anticorpos neutralizantes contra BoHV-1/5 em amostra de soro e detectar DNA viral em sêmen de touros do rebanho bovino localizado nas fazendas
Arq. Bras. Med. Vet. Zootec.. Publicado em: 2019-02
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7. Human polyomaviruses and cancer: an overview
The name of the family Polyomaviridae, derives from the early observation that cells infected with murine polyomavirus induced multiple (poly) tumors (omas) in immunocompromised mice. Subsequent studies showed that many members of this family exhibit the capacity of mediating cell transformation and tumorigenesis in different experimental models. The transfo
Clinics. Publicado em: 11/10/2018
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8. Methylation in the promoter regions of WT1, NKX6-1 and DBC1 genes in cervical cancer tissues of Uygur women in Xinjiang
Abstract This study aimed to explore: 1) DNA methylation in the promoter regions of Wilms tumor gene 1 (WT1), NK6 transcription factor related locus 1 gene (NKX6-1) and Deleted in bladder cancer 1 (DBC1) gene in cervical cancer tissues of Uygur women in Xinjiang, and 2) the correlation of gene methylation with the infection of HPV16/18 viruses. We detected H
Genet. Mol. Biol.. Publicado em: 2018-03
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9. An overview of the molecular and epidemiological features of HIV-1 infection in two major cities of Bahia state, Brazil
BACKGROUND The high mutation rate of the human immunodeficiency virus (HIV) has created a public health challenge because the use of antiretroviral drugs can generate selective pressure that drives resistance in these viruses. OBJECTIVE The aim of this work was to characterise the molecular and epidemiological profile of HIV in Bahia, Brazil. METHODS D
Mem. Inst. Oswaldo Cruz. Publicado em: 2017-06
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10. Genome-wide analysis of EgEVE_1, a transcriptionally active endogenous viral element associated to small RNAs in Eucalyptus genomes
Abstract Endogenous viral elements (EVEs) are the result of heritable horizontal gene transfer from viruses to hosts. In the last years, several EVE integration events were reported in plants by the exponential availability of sequenced genomes. Eucalyptus grandis is a forest tree species with a sequenced genome that is poorly studied in terms of evolution a
Genet. Mol. Biol.. Publicado em: 23/02/2017
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11. 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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12. Identification of circo-like virus-Brazil genomic sequences in raw sewage from the metropolitan area of São Paulo: evidence of circulation two and three years after the first detection
BACKGROUND Two novel viruses named circo-like virus-Brazil (CLV-BR) hs1 and hs2 were previously discovered in a Brazilian human fecal sample through metagenomics. CLV-BR hs1 and hs2 possess a small circular DNA genome encoding a replication initiator protein (Rep), and the two genomes exhibit 92% nucleotide identity with each other. Phylogenetic analysis b
Mem. Inst. Oswaldo Cruz. Publicado em: 30/01/2017