Phenotypes Compounds
Mostrando 1-12 de 88 artigos, teses e dissertações.
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1. Anti-quorum sensing activity of phenolic extract from Eugenia brasiliensis (Brazilian cherry)
Abstract The aim of this study was to assess the anti-quorum sensing activity of phenolic extracts from grumixama (Eugenia brasiliensis), also known as Brazilian cherry, in concentrations that did not interfere with bacterial growth. The pulp phenolic compounds were extracted by using solid phage extraction in a mini-collumn C18 and quantified by spectrophot
Food Sci. Technol. Publicado em: 29/04/2016
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2. Clavulanic acid production by the MMS 150 mutant obtained from wild type Streptomyces clavuligerus ATCC 27064
Clavulanic acid (CA) is a powerful inhibitor of the beta-lactamases, enzymes produced by bacteria resistants to penicillin and cefalosporin. This molecule is produced industrially by strains of Streptomyces clavuligerus in complex media which carbon and nitrogen resources are supplied by inexpensive compounds still providing high productivity. The genetic pr
Braz. J. Microbiol.. Publicado em: 24/01/2014
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3. Behavioural responses to human skin extracts and antennal phenotypes of sylvatic first filial generation and long rearing laboratory colony Rhodnius prolixus
Chagas disease is a major public health issue and is mainly spread by Triatominae insects (Hemiptera: Reduviidae). Rhodnius prolixus is the main vector species in Northern South America. Host-seeking behaviour in R. prolixus is mediated by different compounds that are produced by and emanate from the host or microbiota on the host's skin. We tested the behav
Memórias do Instituto Oswaldo Cruz. Publicado em: 2011-06
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4. Capacidade antioxidante, efeitos anticarcinogênicos e absorção de polifenóis de de manga (Mangifera indica L.) in vitro / Antioxidant capacity, anticancer effects and absorption of mango (Mangifera indica L.) polyphenols in vitro
Polifenóis presentes em polpa de manga, incluindo galotaninos, glicosídeos de flavonóides, ácido gálico, derivados da benzofenona, e mangiferina, têm demonstrado propriedades anticarcinogênicas. A etapa de deglicosilação por β-glicosidases tem se mostrado necessária ao metabolismo e à absorção de polifenóis derivados da dieta pelo organism
Publicado em: 2009
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5. Increased resistance to first-line agents among bacterial pathogens isolated from urinary tract infections in Latin America: time for local guidelines?
Emerging resistance phenotypes and antimicrobial resistance rates among pathogens recovered from community-acquired urinary tract infections (CA-UTI) is an increasing problem in specific regions, limiting therapeutic options. As part of the SENTRY Antimicrobial Surveillance Program, a total of 611 isolates were collected in 2003 from patients with CA-UTI pre
Memórias do Instituto Oswaldo Cruz. Publicado em: 2006-11
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6. The acetylator phenotypes of Saudi Arabians with coronary arterial atheroma.
The acetylator phenotypes were determined by means of a sulfamethazine test in 101 Saudi Arabian patients with authenticated coronary atheroma; 65 were found to be slow acetylators. This distribution of phenotypes is not significantly different from that in 220 controls, 148 of whom were slow acetylators. This finding makes it unlikely that compounds contain
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7. Is equol the key to the efficacy of soy foods?1234
Gut bacterial modification of soy isoflavones produces metabolites that differ in biological activity from the parent compounds. Hydrolysis of glycosides results in more active compounds. In contrast, further degradation and transformation of aglycones produce more or less active compounds, depending on the substrate metabolized and the product formed. Bacte
American Society for Nutrition.
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8. Inhibitors of Ras/Raf-1 interaction identified by two-hybrid screening revert Ras-dependent transformation phenotypes in human cancer cells
The interaction of activated Ras with Raf initiates signaling cascades that contribute to a significant percentage of human tumors, suggesting that agents that specifically disrupt this interaction might have desirable chemotherapeutic properties. We used a subtractive forward two-hybrid approach to identify small molecule compounds that block the interactio
National Academy of Sciences.
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9. The Role of Salicylic Acid in the Induction of Cell Death in Arabidopsis acd111
Salicylic acid (SA) is implicated in the induction of programmed cell death (PCD) associated with pathogen defense responses because SA levels increase in response to PCD-inducing infections, and PCD development can be inhibited by expression of salicylate hydroxylase encoded by the bacterial nahG gene. The acd11 mutant of Arabidopsis (Arabidopsis thaliana L
American Society of Plant Biologists.
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10. Molecular Genetic Analysis of Phosphite and Hypophosphite Oxidation by Pseudomonas stutzeri WM88
The first molecular and genetic characterization of a biochemical pathway for oxidation of the reduced phosphorus (P) compounds phosphite and hypophosphite is reported. The pathway was identified in Pseudomonas stutzeri WM88, which was chosen for detailed studies from a group of organisms isolated based on their ability to oxidize hypophosphite (+1 valence)
American Society for Microbiology.
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11. Habituation in in Vitro Soybean Cultures
The habituation of soybean (Glycine max) callus can be induced rapidly, by exposing the tissue to small amounts (10−9molar) of compounds including 2.4-dinitrophenol and phenoxyisobutyric acid for brief periods of time. Such compounds reportedly exhibit antiauxin activity. Various soybean callus phenotypes have been isolated which continue to exhibit hormon
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12. Phenothiazines and Thioxanthenes Inhibit Multidrug Efflux Pump Activity in Staphylococcus aureus
Efflux-related multidrug resistance (MDR) is a significant means by which bacteria can evade the effects of selected antimicrobial agents. Genome sequencing data suggest that Staphylococcus aureus may possess numerous chromosomally encoded MDR efflux pumps, most of which have not been characterized. Inhibition of these pumps, which may restore clinically rel
American Society for Microbiology.