Typhimurium Pathogenicity
Mostrando 1-12 de 122 artigos, teses e dissertações.
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1. Antimicrobial Resistance and Molecular Characterization of Salmonella Enterica Serotypes Isolated from Poultry Sources in Brazil
ABSTRACT Salmonella spp. remain among the most important agents of foodborne diseases worldwide. The importance of Salmonella spp. in public health is linked to their wide range of antimicrobial resistance and to their pathogenicity and virulence in both human and animal hosts. The aim of this study was to determine the antimicrobial resistance patterns for
Braz. J. Poult. Sci.. Publicado em: 18/04/2019
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2. An overview on avian influenza
Avian influenza (AI) is considered an exotic disease in the Brazilian poultry industry, according to the National Avian Health Program (PNSA), with permanent monitoring of domestic, exotic and native avian species. Brazil presents privileged environmental conditions of reduced risk. In addition, all commercial poultry and conservation holdings are registered
Revista Brasileira de Ciência Avícola. Publicado em: 2012-06
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3. Comparative analysis of rat hepatocytes invasion process by Listeria monocytogenes and Salmonella Typhimurium: Morphological characterization, quantification of TNF-alpha release and cellular death by apoptosis / Análise comparativa do processo de invasão de hepatócitos de rato por Listeria monocytogenes e Salmonella Typhimurium: caracterização morfológica, quantificação da liberação de TNF-alfa e da morte celular por apoptose
INTRODUÇÃO: Os hepatócitos apresentam papel potencial em iniciar e amplificar a resposta inflamatória aguda no fígado, através da liberação de citocinas pró-inflamatórias, em papel complementar ao exercido pelas células de Kupffer e endoteliais. A invasão bacteriana da célula hepática é um estímulo para que o hepatócito produza citocinas com
Publicado em: 2009
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4. Ocurrence of Salmonella spp. in chain avian of the central region in Mato Grosso do Sul / Ocorrencia de Salmonella spp. na cadeia avícola da região central de Mato Grosso do Sul
The birds can constitute a vehicle of diffusion for other animal species and human beings, causing food borne outbreak for the consumption of products badly elaborated or conserved. In this context, one of the main microorganisms is the Salmonella that has caused constant concerns to the sanitary authorities given to the complexity and pathogenicity. Salmone
Publicado em: 2007
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5. Detection of hilA gene sequences in serovars of Salmonella enterica sufigbspecies enterica
hilA gene promoter, component of the Salmonella Pathogenicity Island 1, has been found in Salmonella serovar Typhimurium, being important for the regulation of type III secretion apparatus genes. We detected hilA gene sequences in Salmonella serovars Typhi, Enteritidis, Choleraesuis, Paratyphi A and B, and Pullorum, by polymerase chain reaction (PCR) and hyb
Memórias do Instituto Oswaldo Cruz. Publicado em: 2002-12
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6. Viability and Virulence of Experimentally Stressed Nonculturable Salmonella typhimurium
Maintenance of pathogenicity of viable but nonculturable Salmonella typhimurium cells experimentally stressed with UV-C and seawater, was investigated relative to the viability level of the cellular population. Pathogenicity, tested in a mouse model, was lost concomitantly with culturability, whereas cell viability remained undamaged, as determined by respir
American Society for Microbiology.
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7. Contribution of Salmonella typhimurium Virulence Factors to Diarrheal Disease in Calves
Limited knowledge is available about the virulence mechanisms responsible for diarrheal disease caused by Salmonella typhimurium. To assess the contribution to diarrheal disease of virulence determinants identified in models of infection, we tested a collection of S. typhimurium mutants for their ability to cause enteritis in calves. S. typhimurium strains c
American Society for Microbiology.
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8. Identification of GtgE, a Novel Virulence Factor Encoded on the Gifsy-2 Bacteriophage of Salmonella enterica Serovar Typhimurium
The Gifsy-2 temperate bacteriophage of Salmonella enterica serovar Typhimurium contributes significantly to the pathogenicity of strains that carry it as a prophage. Previous studies have shown that Gifsy-2 encodes SodCI, a periplasmic Cu/Zn superoxide dismutase, and at least one additional virulence factor. Gifsy-2 encodes a Salmonella pathogenicity island
American Society for Microbiology.
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9. In Vivo Genetic Analysis Indicates That PhoP-PhoQ and the Salmonella Pathogenicity Island 2 Type III Secretion System Contribute Independently to Salmonella enterica Serovar Typhimurium Virulence
Many virulence factors are required for Salmonella enterica serovar Typhimurium to replicate intracellularly and proliferate systemically within mice. In this work, we have carried out genetic analyses in vivo to determine the functional relationship between two major virulence factors necessary for systemic infection by S. enterica serovar Typhimurium: the
American Society for Microbiology.
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10. Salmonella typhimurium Encodes a Putative Iron Transport System within the Centisome 63 Pathogenicity Island
Upon entry into the host, Salmonella enterica strains are presumed to encounter an iron-restricted environment. Consequently, these bacteria have evolved a variety of often-redundant high-affinity acquisition systems to obtain iron in this restricted environment. We have identified an iron transport system that is encoded within the centisome 63 pathogenicit
American Society for Microbiology.
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11. Salmonella Pathogenicity Island 1-Independent Induction of Apoptosis in Infected Macrophages by Salmonella enterica Serotype Typhimurium
The enteric pathogen Salmonella enterica serotype Typhimurium induces apoptosis in infected macrophages. This process is rapid, specific, and depends on the type III protein secretion system encoded within Salmonella pathogenicity island 1 (SPI1). Here, we demonstrate that serotype Typhimurium can activate programmed macrophage cell death independently of SP
American Society for Microbiology.
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12. Radiation Treatment of Foods: II. Public Health Significance of Irradiation-Recycled Salmonella1
Salmonellae resistant to gamma irradiation were developed by repeated irradiation and subculturing in a nutrient broth-yeast extract medium. Few differences were noted in the biochemical characteristics of parent and resistant cultures; however, microculture studies revealed variations in morphology and in cell division patterns. A considerable decrease in p