Adhesins Bacterial
Mostrando 1-12 de 166 artigos, teses e dissertações.
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1. Helicobacter pylori adhesion to gastric epithelial cells is mediated by glycan receptors
Helicobacter pylori adhesion to gastric epithelial cells constitutes a key step in the establishment of a successful infection of the gastric mucosa. The high representation of outer membrane proteins in the bacterial genome suggests the relevance of those proteins in the establishment of profitable interactions with the host gastric cells. Gastric epithelia
Brazilian Journal of Medical and Biological Research. Publicado em: 2010-07
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2. Formação de biofilme em amostras de Escherichia coli associada a sepse (SEPEC) : caracterização fenotipica, genotipica e filogenia / Biofilm formation by sepsis associated Escherichia coli (SEPEC) strains : genotypic, phenotypic characterization and phylogeny
Extraintestinal Pathogenic Escherichia coli (ExPEC) form a heterogeneous group as the bacterial virulence factors involved in its pathogenicity and local infection in the host. Our work aimed study the phenotypic and genotypic characteristics of biofilm formation and phylogeny of sepsis-associated Escherichia coli Human (SEPEC), as well as their patterns of
Publicado em: 2010
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3. Avaliação in vitro dos efeitos da nicotina e cotinina sobre a expressão de proteinas e capacidade de adesão e invasão de Porphyromonas gingivalis / In vitro evaluation of nicotine and cotinine effects on protein expression and adhesion and invasion abilities of Porphyromonas gingivalis
Cigarette smoking is associated with the development of periodontitis and the decreased response to periodontal therapy. P. gingivalis is an important colonizer of the subgingival biofilm and is one of the major pathogens involved in the initiation and progression of periodontal disease. However, the possible effects of major cigarette s derivatives on P. gi
Publicado em: 2009
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4. Serogroups and virulence genotypes of Escherichia coli isolated from patients with sepsis
Sixty strains of Escherichia coli, isolated by hemoculture, from septicemic Brazilian patients were evaluated to determine their serogroup and invasivity to Vero cells. All 60 patients died within 2 days of hospitalization. Furthermore, the molecular study of the following extraintestinal pathogenic E. coli-associated virulence factor (VF) genes was performe
Brazilian Journal of Medical and Biological Research. Publicado em: 2008-10
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5. Mecanismos de patogenia do Mycobacterium leprae: Análise de proteínas extracelulares e efeitos sobre o metabolismo lipídico do hospedeiro. / Mechanisms of Mycobacterium leprae pathogenesis: Analysis of the extracellular proteins and effect on the host lipid metabolism.
The complete sequence of the Mycobacterium leprae genome, together with recent advances in the definition of its proteome, are contributing to our understanding of leprosy pathogenesis, so far a difficult task due to the unique properties of this bacterium. The major goal of the present study was to identify and functionally characterize extracellular M. lep
Publicado em: 2008
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6. Estudo microbiológico fecal de linhagens de camundongos, de estirpes de E. coli e do meio ambiente em biotérios / Fecal microbiologic study of mice lineages, E. coli strains and the environment in laboratory animal facilities
Mice have been largely used at experiences since 17o century, so their microbiological quality should be investigated and kept safety in order to avoid they become ill or die during an investigation and dont transmit zoonosis to those who handle them; this is important in order to make the results presented in the experience be reliable. The Escherichia coli
Publicado em: 2008
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7. Caracterização de um novo fator de colonização (FC O25) de Escherichia coli isoladas de colibacilose neonatal bovina / Characterization of a new colonization (CF O25) of Escherichia coli isolated from neonatal bovine colibacillosis
Infections from Escherichia coli are frequent in domestic animals, affecting mainly newborn animals in the post weaning period, being thus responsible for important economic losses in the cattle, porcine and lamb herds. The establishment of the bacterium in the host is made by colonization and it is a process mediated by proteins called adhesins that are dis
Publicado em: 2006
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8. Biologicals and moleculars methods in the study of virulence factors in Eschericia coli strains isolated by blood culture of patients with septicaemia / Metodos biologicos e moleculares no estudo de fatores de virulencia em amostras de Eschericia coli isoladas por hemocultura de pacientes com septicemia
The pathogenicity of Escherichia coli in extraintestinal infections (ExPEC) depends to virulence properties bacterial. This, genetically, spread by several pathogenicity associated islands ? genic blocks contiguous ? responsible to express factors that allow to bacteria colonize, survive and thus, hurt the host integrity. Seventh tree strains of E. coli isol
Publicado em: 2006
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9. Epithelial cell signaling responses to enterohemorrhagic Escherichia coli infection
Enterohemorrhagic Escherichia coli, including the serotype O157:H7 that is most commonly identified with human disease, cause both sporadic cases and outbreaks of non-bloody diarrhea and hemorrhagic colitis. In about 10% of infected subjects, the hemolytic uremic syndrome (hemolytic anemic, thrombocytopenia, and acute renal failure) develops, likely as a con
Memórias do Instituto Oswaldo Cruz. Publicado em: 2005-03
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10. Pathogenicity mechanisms of prokaryotic cells: an evolutionary view
The success of pathogenic microbes depends on their ability to colonize host tissues and to counter host defense mechanisms. Microorganisms can produce overwhelming infection because of their relatively short generation times, and because they have evolved powerful mechanisms for generating phenotypic diversity as an efficient strategy for adapting to rapidl
Brazilian Journal of Infectious Diseases. Publicado em: 2003-02
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11. Further biochemical characterization of Mycobacterium leprae laminin-binding proteins
It has been demonstrated that the alpha2 chain of laminin-2 present on the surface of Schwann cells is involved in the process of attachment of Mycobacterium leprae to these cells. Searching for M. leprae laminin-binding molecules, in a previous study we isolated and characterized the cationic proteins histone-like protein (Hlp) and ribosomal proteins S4 and
Brazilian Journal of Medical and Biological Research. Publicado em: 2001-04
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12. Capsule Shields the Function of Short Bacterial Adhesins
Bacterial surface structures such as capsules and adhesins are generally regarded as important virulence factors. Here we demonstrate that capsules block the function of the self-recognizing protein antigen 43 through physical shielding. The phenomenon is not restricted to Escherichia coli but can occur in other gram-negative bacteria. Likewise, we show that
American Society for Microbiology.