Salmonella Typhi
Mostrando 13-24 de 471 artigos, teses e dissertações.
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13. Antibacterial properties of silver nanoparticles synthesized by marine Ochrobactrum sp.
Metal nanoparticle synthesis is an interesting area in nanotechnology due to their remarkable optical, magnetic, electrical, catalytic and biomedical properties, but there needs to develop clean, non-toxic and environmental friendly methods for the synthesis and assembly of nanoparticles. Biological agents in the form of microbes have emerged up as efficient
Braz. J. Microbiol.. Publicado em: 2014-12
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14. Inibição de bactérias associadas a alimentos por substâncias antimicrobianas produzidas por estirpes de Pseudomonas sp. isoladas de leite pasteurizado
Neste trabalho, a produção de substâncias antimicrobianas por estirpes de Pseudomonas sp. isoladas de leite pasteurizado e seu potencial de ação contra bactérias associadas a alimentos foram investigados. As amostras de leite pasteurizado foram adquiridas em estabelecimentos comerciais, arbitrariamente escolhidos, da cidade do Rio de Janeiro-RJ, Brasil
Braz. J. Food Technol.. Publicado em: 2013-12
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15. Avaliação antibacteriana de Baccharis trimera (Less.) DC. (carqueja) em bactérias de interesse médico
Baccharis trimera (Less.) (Asteraceae), popularmente conhecida como "carqueja", é uma espécie comumente empregada na medicina tradicional no tratamento ou prevenção de doenças. Nesse contexto, o objetivo deste trabalho foi estudar a atividade antibacteriana do extrato bruto hidroalcoólico de B. trimera frente às bactérias Gram-positivas (Staphylococc
Rev. Ceres. Publicado em: 2013-10
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16. Endophytic fungi occurring in Ipomoea carnea tissues and their antimicrobial potentials
The aim of this work was to study the endophytic fungi associated with the tissues of Ipomoea carnea, a common invasive plant of India. A total of 69 isolates belonging to ten taxa comprising 1.45% Zygomycetes, 10.14% Coelomycetes, 62.32% Hypomycetes, 18.84% sterile mycelia and 7.25% unidentified species were obtained. Species of Curvularia, Aspergillus, Fus
Braz. arch. biol. technol.. Publicado em: 2012-10
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17. Chemical characterization of bioactive compounds from the endophytic fungus Diaporthe helianthi isolated from Luehea divaricata
Endophytic microorganisms, defined as fungi or bacteria that colonize the interior of plants without causing any immediate negative effects or damages, have reciprocal relationships with host plants. In some cases their presence is beneficial to the host due to the synthesis of bioactive compounds, among which several alcohols, esters, ketones and others tha
Braz. J. Microbiol.. Publicado em: 2012-09
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18. Salmonella enterica serovar Typhi plasmid pR ST98 enhances intracellular bacterial growth and S. typhi-induced macrophage cell death by suppressing autophagy
OBJECTIVES: Plasmid pR ST98 is a hybrid resistance-virulence plasmid isolated from Salmonella enterica serovar Typhi (S. typhi). Previous studies demonstrated that pR ST98 could enhance the virulence of its host bacteria. However, the mechanism of pR ST98-increased bacterial virulence is still not fully elucidated. This study was designed to gain further ins
Brazilian Journal of Infectious Diseases. Publicado em: 2012-06
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19. Antinociceptive, cytotoxic and antibacterial activities of Cleome viscosa leaves
The methanol extract of the dried leaves of Cleome viscosa L., Cleomaceae, was investigated for its possible antinociceptive, cytotoxic and antibacterial activities in animal models. The extract produced significant writhing inhibition in acetic acid-induced writhing in mice at the oral doses of 250 and 500 mg/kg body weight (p<0.001) comparable to the stand
Revista Brasileira de Farmacognosia. Publicado em: 25/02/2011
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20. Terapia experimental com bacteriófagos / Experimental phage therapy
Bacteriófagos são vírus que infectam bactérias e arqueias, representando as entidades biológicas mais abundantes do mundo e influenciando de maneira marcante populações naturais de seus hospedeiros. A terapia com bacteriófagos, que representa uma das primeiras formas modernas de combate a infecções bacterianas, foi recentemente redescoberta e vem s
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/08/2010
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21. Expression of fljB: z66 on a linear plasmid of Salmonella enterica serovar typhi is dependent on FliA and FlhDC and regulated by OmpR
Salmonella enterica serovar Typhi z66-positive strains have two different flagellin genes, fliC:d/j and fljB:z66, located on the chromosome and on a linear plasmid, respectively. To investigate the mechanism underlying the expressional regulation of fljB:z66, gene deletion mutants of the regulators FliA, FlhDC, and OmpR were constructed in this study. The ex
Brazilian Journal of Microbiology. Publicado em: 2010-10
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22. Primary anterior parietal wall abscess due to Salmonella Typhi
Brazilian Journal of Infectious Diseases. Publicado em: 2010-08
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23. Biological activities of extracts from brazilian marine algae / Atividades biológicas de extratos de algas marinhas brasileiras
Algae are important sources of raw material and biological active compounds used in pharmaceutical, cosmetic and food industries. Marine Brazilian red macroalge, Gracilaria birdiae e Gracilaria domingensis, are found in the Brazilian northeast coast and have high potential for industries. The aim of this work was to evaluate the antioxidant activity of the e
Publicado em: 2010
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24. Antibacterial and Antioxidant Activities of Acid and Bile Resistant Strains of Lactobacillus fermentum Isolated from Miang
Miang is a kind of traditional fermented tea leaves, widely consumed in northern Thailand as a snack. It contains several kinds of Lactobacilli spp. The aim of this study was to isolate strains of Lactobacillus fermentum from miang and to investigate their antibacterial and antioxidant activities. The agar spot and well assays were used for determination of
Brazilian Journal of Microbiology. Publicado em: 2009-12