Virulence Markers
Mostrando 13-24 de 162 artigos, teses e dissertações.
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13. Molecular markers and genetic diversity of Plasmodium vivax
Enhanced understanding of the transmission dynamics and population genetics for Plasmodium vivax is crucial in predicting the emergence and spread of novel parasite phenotypes with major public health implications, such as new relapsing patterns, drug resistance and increased virulence. Suitable molecular markers are required for these population genetic stu
Memórias do Instituto Oswaldo Cruz. Publicado em: 2011-08
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14. Genetic diversity and virulence of Colletotrichum lupini isolates collected in Chile
All nineteen Colletotrichum isolates causing anthracnose in lupin plants growing in southern Chile belong to Colletotrichum lupini, confirming an absence of interspecific variation in the causal agent of anthracnose. Nevertheless, intraspecific genetic diversity was detected with random amplified polymorphic DNA (RAPD) markers. Based on a multiloci analysis,
Tropical Plant Pathology. Publicado em: 2010-06
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15. Correlation between Phenotypic and Genotypic Markers of Virulence and Oxacillin Resistance in Staphylococcus spp. coagulasenegative Isolates from Bovine Mastitis. / Correlação entre marcadores fenotípicos e genotípicos de virulência e resistência à oxacilina em Staphylococcus spp. coagulase-negativos isolados a partir de mastite bovina
Os estafilococos coagulase-negativos (ECN) fazem parte da microbiota normal da pele e apesar de terem sido considerados saprófitas por muito tempo, o seu significado clínico como agente etiológico tem aumentado com o passar dos anos. No entanto, apesar de todo avanço nas técnicas de identificação dos ECN e do conhecimento destes como agentes etiológi
Publicado em: 2010
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16. Caracterização de marcadores de virulência em Paracoccidioides brasiliensis. / Characterization of markers of virulence in Paracoccidioides brasiliensis.
Paracoccidioidomycosis (PCM) is a human systemic granulomatous disease, prevalent in South America, caused by a thermodimorphic fungus, Paracoccidioides brasiliensis. This fungus presents complex antigenic structure and some of these components have been related with its pathogenicity, of which little is known. The virulence recovery of isolates by passage i
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 24/06/2009
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17. Clonal relationship among atypical enteropathogenic Escherichia coli strains isolated from different animal species and humans. / Estudo das relações clonais entre amostras de Escherichia coli enteropatogênica atípica de origem animal e humana.
Forty-nine typical and atypical EPEC strains belonging to different serotypes, isolated from humans, pets (cats and dogs), farm (bovines, sheep and rabbits) and wild animals (monkeys) were investigated for virulence markers and clonal similarity by pulsed-field gel electrophoresis (PFGE) and multilocus sequence typing (MLST). The virulence markers analyzed r
Publicado em: 2009
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18. Determinação de grupos filogenéticos e pesquisa de genes de virulência em isolados de Escherichia coli obtidos de amostras de queijo Minas / Determination of phylogenetic groups and search of virulence genes in isolated Escherichia coli from Minas cheese samples
Introduction. The search of Escherichia coli in foods is relevant for the Public Health because it indicates the fecal contamination and the product quality offered to the consumer. The determination of phylogenetic group and virulence factors of E. coli, allows the identification of the existence of pathogenic strains that could cause disease. Objectives: D
Publicado em: 2009
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19. Transformation of Fusarium oxysporum f sp. vasinfectum with GFP and DsRed gene markers. / TRANSFORMAÃÃO DE Fusarium oxysporum f. sp. vasinfectum COM OS GENES MARCADORES GFP e DsRed.
Fusarium oxysporum f sp. vasinfectum, the casual agent of fusarium wilt disease of cotton, is frequent in most cottonâproducing regions in Brazil. The fungus infects roots, colonizes the rhizomes and eventually blocks the vascular system of the pseudostems, leading to the plant collapse. The Green and Red Fluorescent Proteins (GFP and DsRed) emit green and
Publicado em: 2009
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20. Caracterização de prováveis genes do sistema de secreção tipo III em Escherichia coli de adesão difusa
The diffusely adhering Escherichia coli (DAEC) is a heterogeneous group and less characterized when compared to other pathotypes of E. coli. The fact that some strains are pathogenic and others not, creates doubts about the exact classification of this group. Contributes to it, the lack of molecular markers corresponding to the virulence genes of DAEC. Some
Publicado em: 2009
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21. Caracterização biológica e molecular de amostras do Trypanosoma cruzi isoladas de escolares e de suas mães residentes no Vale do Jequitinhonha, MG.
This study intended to explore the hypothesis of straight correlation between T. cruzi genetics and biological characteristics with the development of Chagas disease clinical status. For this, T. cruzi strains were isolated from two children and four child/mother pairs, from Berilo and José Gonçalves de Minas municipalities, Jequitinhonha Valley, MG. The c
Publicado em: 2009
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22. Algumas propriedades de virulência de Escherichia coli isoladas de pacientes com doença inflamatória intestinal. / Some virulence properties of Escherichia coli isolated from patients with inflammatory bowel disease.
Escherichia coli are increased in inflammatory bowel disease (IBD) patients, but the reason for this elevation is unknown. Amongst their properties is the interaction with cultured epithelial cells. Rectal biopsies from 27 ulcerative colitis (UC), 8 Crohns disease (CD) and 19 control patients were cultured for E. coli, given 131 isolates. Enteroagregative E.
Publicado em: 2008
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23. Characterization of the dispersin protein in Escherichia coli strains that do not belong to the enteroagreggative E.coli pathotype. / Caracterização da proteína dispersina em amostras de Escherichia coli não pertencentes ao patótipo de E. coli enteroagregativa.
The protein dispersin, encoded by aap, is one of the virulence factors of enteroaggregative Escherichia coli (EAEC). Detection of aap has been employed along with aggR and aatA in the molecular diagnosis of EAEC. In order to verify their specificity, these genes were searched in a collection of 243 diarrheagenic E. coli (DEC) strains. All of them were negati
Publicado em: 2008
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24. A comparative study of Shiga toxin-producing Escherichia coli and atypical Enteropathogenic Escherichia coli strains isolated from healthy ovine of different populations in São Paulo, Brazil. / Estudo da frequência e caracterização genotípica e fenotípica de amostras de Escherichia coli produtoras da Toxina Shiga (STEC) isoladas de ovinos no Estado de São Paulo.
Ovinos são considerados reservatórios de Escherichia coli produtora da toxina Shiga (STEC). Este estudo pesquisou amostras de 100 carneiros no Estado de São Paulo. PCR foi empregada para detecção de stx1, stx2, eae, ehx, e intiminas. RFLP-PCR foi realizado para identificação das variantes de stx1/stx2 e fliC. Cinco isolados eae+stx- de sorotipos O128:
Publicado em: 2008