Microbial Virulence
Mostrando 1-12 de 124 artigos, teses e dissertações.
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1. Advances in Cryptococcus genomics: insights into the evolution of pathogenesis
Cryptococcus species are the causative agents of cryptococcal meningitis, a significant source of mortality in immunocompromised individuals. Initial work on the molecular epidemiology of this fungal pathogen utilized genotyping approaches to describe the genetic diversity and biogeography of two species, Cryptococcus neoformans and Cryptococcus gattii. Whol
Mem. Inst. Oswaldo Cruz. Publicado em: 19/02/2018
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2. Survey of verotoxin-producing Escherichia coli and faecal coliforms in beef carcasses destined for export at slaughterhouses in Brazil
Abstract This study investigated the presence of generic and verotoxin-producing E. coli as well as enumerated faecal coliforms in 30 beef carcasses in different parts of the slaughter process (after skinning, washing and cooling) at each of three slaughterhouses of the state of Mato Grosso do Sul, Brazil. Among the total number of carcasses examined (n = 90
Food Sci. Technol. Publicado em: 26/10/2017
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3. Comparative metagenome of a stream impacted by the urbanization phenomenon
Abstract Rivers and streams are important reservoirs of freshwater for human consumption. These ecosystems are threatened by increasing urbanization, because raw sewage discharged into them alters their nutrient content and may affect the composition of their microbial community. In the present study, we investigate the taxonomic and functional profile of th
Braz. J. Microbiol.. Publicado em: 2016-12
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4. Antagonistic activity expressed by Shigella sonnei: identification of a putative new bacteriocin
Bacteriocins are antibacterial, proteinaceous substances that mediate microbial dynamics. Bacteriocin production is a highly disseminated property among all major lineages of bacteria, including Shigella. In this paper, we addressed the purification and characterisation of a bacteriocin produced by a Shigella sonnei strain (SS9) isolated from a child with ac
Mem. Inst. Oswaldo Cruz. Publicado em: 2013-09
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5. Influência das proteínas salivares e plasmáticas no desenvolvimento de biofilmes de Candida albicans / The influence of salivary and plasmatic proteins on the development of Candida albicans biofilms
The development of Candida albicans biofilms may be mediated by a differential expression of proteic ligand sites in the acquired pellicle formed onto the oral prosthesis surfaces. Therefore, the main objective of this study was to evaluate the influence of salivary and plasmatic-derived proteins on the development of C. albicans biofilms. In the first chapt
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 15/02/2012
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6. Mutacins of Streptococcus mutans
The colonization and accumulation of Streptococcus mutans are influenced by various factors in the oral cavity, such as nutrition and hygiene conditions of the host, salivary components, cleaning power and salivary flow and characteristics related with microbial virulence factors. Among these virulence factors, the ability to synthesize glucan of adhesion, g
Braz. J. Microbiol.. Publicado em: 2011-12
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7. Differential susceptibility of adults and nymphs of Blattella germanica (L.) (Blattodea: Blattellidae) to infection by Metarhizium anisopliae and assessment of delivery strategies
Microbial insecticides for cockroach control, such as those containing entomopathogenic fungi, may be an alternative to reduce contamination by chemicals in housing and food storage environments. Virulence of isolate ESALQ1037 belonging to the Metarhizium anisopliae complex against nymphs and adults of Blattella germanica (L.), and its infectivity following
Neotropical Entomology. Publicado em: 2011-06
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8. Molecular battles between plant and pathogenic bacteria in the phyllosphere
The phyllosphere, i.e., the aerial parts of the plant, provides one of the most important niches for microbial colonization. This niche supports the survival and, often, proliferation of microbes such as fungi and bacteria with diverse lifestyles including epiphytes, saprophytes, and pathogens. Although most microbes may complete the life cycle on the leaf s
Brazilian Journal of Medical and Biological Research. Publicado em: 2010-08
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9. Influência da qualidade de diferentes tipos de arroz e inibidores de proteinases no rendimento e na virulência de conídios do fungo entomopatogênico Metarhizium anisopliae (Mestch.) Sorokin (Ascomycota: Hypocreales) / Influence of quality of different types of rice and proteinase inhibitors on yield and virulence of conidia of the entomopathogenic fungus Metarhizium anisopliae (Mestch.) Sorokin (Ascomycota: Hypocreales)
In order to optimize the production process of Metarhizium anisopliae, the present study aimed to determine the effects of soybean proteinase inhibitors on growth, sporulation and virulence of the fungus and to compare yield, viability and virulence of M. anisopliae conidia produced in different types of rice and additives. The addition of 5 g.L-1 of semi-pu
Publicado em: 2010
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10. Análise da expressão gênica após a interação entre Aggregatibacter actinomycetemcomitans e célula epitelial. / Gene expression analysis after interaction between Aggregatibacter actinomycetemcomitans and epithelial cell.
Aggregatibacter actinomycetemcomitans (A.a) é associado a periodontite agressiva. Na infecção, pode ocorrer ativação de vias de sinalização do hospedeiro e bacterianas. Objetivos: determinar a transcrição de genes relacionados à virulência bacteriana e das vias de transdução de sinais da célula epitelial após interação bactéria-célula epit
Publicado em: 2010
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11. Caracterização molecular das subunidades catalítica e regulatória da calcineurina no fungo patogênico Paracoccidioides brasiliensis. / Molecular characterization of catalytic and regulatory subunits of calcineurina in the pathogenic fungus Paracoccidioides brasiliensis.
A calcineurina é uma fosfatase ativada por Ca2+ e calmodulina presente em todos os eucariotos que, em fungos, atua na sinalização de eventos em resposta a estímulos do ambiente e tem papel essencial na patogenicidade de fungos causadores de doenças. O Paracoccidioides brasiliensis é um fungo dimórfico causador da paracoccidioidomicose, uma micose sist
Publicado em: 2009
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12. Estudo de proteases degradadoras de cutícula produzidas por Beauveria bassiana
The entomopathogenic fungus Beauveria bassiana is considered a promising agent of microbial control of insects considered pests of agriculture, such as, the grasshopper Rhammatocerus schistocercoides. This grasshopper attacks economically important plantations in the center-west Brazil. B. bassiana is capable to penetrate through cuticle of the host by apres
Publicado em: 2007