Regulation Of Virulence
Mostrando 1-12 de 525 artigos, teses e dissertações.
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1. Calpains of Leishmania braziliensis: genome analysis, differential expression, and functional analysis
BACKGROUND Calpains are proteins belonging to the multi-gene family of calcium-dependent cysteine peptidases that undergo tight on/off regulation, and uncontrolled proteolysis of calpains is associated with severe human pathologies. Calpain orthologues are expanded and diversified in the trypanosomatids genome. OBJECTIVES Here, we characterised calpains
Mem. Inst. Oswaldo Cruz. Publicado em: 23/09/2019
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2. Anti-Quorum Sensing Potential of Antioxidant Quercetin and Resveratrol
ABSTRACT Quorum sensing system plays an active role in the regulation of pathogenicity of many microorganisms. Inhibition of pathogenicity or virulence factors will increase the success of treatment by preventing the development of antibiotic resistance. In this study, anti-quorum sensing activities of quercetin and resveratrol compounds, which have antioxid
Braz. arch. biol. technol.. Publicado em: 25/06/2018
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3. Biofilm production and beta-lactamic resistance in Brazilian Staphylococcus aureus isolates from bovine mastitis
Abstract Staphylococcus spp. play an important role in the etiology of bovine mastitis. Staphylococcus aureus is considered the most relevant species due to the production of virulence factors such as slime, which is required for biofilm formation. This study aimed to evaluate biofilm production and its possible relation to beta-lactamic resistance in 20 S.
Braz. J. Microbiol.. Publicado em: 2017-03
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4. A protein expression system for tandem affinity purification in Xanthomonas citri subsp. citri
Abstract Citrus canker, caused by the Gram-negative bacterium Xanthomonas citri subsp. citri (Xac), is one of the most devastating diseases to affect citrus crops. There is no treatment for citrus canker; effective control against the spread of Xac is usually achieved by the elimination of affected plants along with that of asymptomatic neighbors. An in dept
Braz. J. Microbiol.. Publicado em: 2016-06
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5. Optimization of the RNeasy Mini Kit to obtain high-quality total RNA from sessile cells of Staphylococcus aureus
Biofilm formed by Staphylococcus aureus is considered an important virulence trait in the pathogenesis of infections associated with implantable medical devices. Gene expression analyses are important strategies for determining the mechanisms involved in production and regulation of biofilm. Obtaining intact RNA preparations is the first and most critical st
Braz J Med Biol Res. Publicado em: 2015-12
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6. Oxidative stress enhances the expression of sulfur assimilation genes: preliminary insights on the Enterococcus faecalis iron-sulfur cluster machinery regulation
The Firmicutes bacteria participate extensively in virulence and pathological processes. Enterococcus faecalis is a commensal microorganism; however, it is also a pathogenic bacterium mainly associated with nosocomial infections in immunocompromised patients. Iron-sulfur [Fe-S] clusters are inorganic prosthetic groups involved in diverse biological processes
Mem. Inst. Oswaldo Cruz. Publicado em: 06/06/2014
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7. Influência do Gene pacC na Regulação de Manosiltransferases no Dermatófito Trichophyton rubrum em Função de Variações Nutricionais e pH Ambiente. / Influence of Gene pacC in Mannosiltransferase Regulation of the Dermathophyte Trichophyton rubrum in Function to Changes by pH and Nutrient Sources.
Gene expression regulation is essential for fungi to adapt to environmental adversities, such as changes in the extracellular pH, nutrient starvation, ionic strength, and temperature. The adaptive response to ambient pH is well characterized in model fungi such as Aspergillus nidulans, and involves the signal transduction pathway consisting of the products o
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 02/12/2011
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8. Influência do regulador CovR na resposta de Streptococcus mutans ao contato com saliva e sangue / Influence of the CovR regulator in Streptococcus mutans response to contact with saliva and blood
Streptococcus mutans é o principal patógeno da cárie dental em humanos, por ser capaz de se acumular no biofilme dentário principalmente na presença de sacarose e produzir e tolerar grandes concentrações de ácidos, os quais causam a desmineralização dos dentes. Além disto, S. mutans pode estar associado à etiologia da endocardite bacteriana, doen
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 01/07/2011
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9. The Streptococcus mutans GlnR protein exhibits an increased affinity for the glnRA operon promoter when bound to GlnK
The control of nitrogen metabolism in pathogenic Gram-positive bacteria has been studied in a variety of species and is involved with the expression of virulence factors. To date, no data have been reported regarding nitrogen metabolism in the odontopathogenic species Streptococcus mutans. GlnR, which controls nitrogen assimilation in the related bacterial s
Brazilian Journal of Medical and Biological Research. Publicado em: 2011-12
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10. CARACTERIZAÇÃO DE GENES DO VÍRUS DO ECTIMA CONTAGIOSO ENVOLVIDOS NA REGULAÇÃO DA VIA DE SINALIZAÇÃO DO NF-κB / CHARACTERIZATION OF ORF VIRUS-ENCODED GENES INVOLVED IN THE REGULATION OF THE NF-κB SIGNALING PATHWAY
Orf virus (ORFV), the type member of the genus Parapoxvirus of the family Poxviridae, is the etiologic agent of orf or contagious ecthyma, a contagious and ubiquitous disease of sheep and goats. ORFV genome consists of a double stranded DNA molecule with approximately 138 Kb, and contains 131 putative genes. Among those, 15 are novel genes, unique to parapox
Publicado em: 2010
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11. Caracterização dos regulons de CovR e VicRK em Streptococcus mutans / Charactrization of CovR and VicRK in Streptococcus mutans
S. mutans são os principais patógenos da cárie, pois expressam diversas proteínas importantes para a colonização e aumento em proporção nos biofilmes dentais na presença de sacarose. Estas incluem as glicosiltransferases (Gtf), que sintetizam uma matriz extracelular de glucano a partir da sacarose, e proteínas ligadoras de glucano (Gbps), as quais
Publicado em: 2010
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12. 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