Inactive Cultures
Mostrando 1-12 de 178 artigos, teses e dissertações.
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1. Commercial drugs containing flavonoids are active in mice with malaria and in vitro against chloroquine-resistant Plasmodium falciparum
BACKGROUND The main strategy to control human malaria still relies on specific drug treatment, limited now by Plasmodium falciparum-resistant parasites, including that against artemisinin derivatives. Despite the large number of active compounds described in the literature, few of them reached full development against human malaria. Drug repositioning is a f
Mem. Inst. Oswaldo Cruz. Publicado em: 06/12/2018
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2. Effect of γ-lactones and γ-lactams compounds on Streptococcus mutans biofilms
Abstract Considering oral diseases, antibiofilm compounds can decrease the accumulation of pathogenic species such as Streptococcus mutans at micro-areas of teeth, dental restorations or implant-supported prostheses. Objective To assess the effect of thirteen different novel lactam-based compounds on the inhibition of S. mutans biofilm formation. Material
J. Appl. Oral Sci.. Publicado em: 22/02/2018
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3. Análise da estacionariedade e gaussianidade da atividade elétrica neural, do ruído biológico e do ruído de instrumentação
This work analyzes signals of spontaneous neuronal electrical activity, measured by devices known as Multi-Electrode Arrays (MEA), which are the substrate of neuronal cultures of rat hippocampus. The database under investigation consists of five signals: (i) instrumentation noise, (ii) biological noise, (iii) inactive culture and (iv) two active culture expe
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 11/07/2011
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4. Processamento de sinais de atividade elétrica neuronal a partir de ferramentas matemáticas clássicas
Esta dissertação tem como objetivo fazer um estudo e processamento de dois tipos de sinais de atividade elétrica neuronal. O primeiro foi registrado a partir de matrizes multieletrodos (MEA), referentes a atividade espontânea de grupos neuronais em cultura. Foram analisadas duas culturas consideradas como inativas, ou seja, culturas que após alguns dias
Publicado em: 2009
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5. Evaluation in vitro and vivo of the cheese whey fermented by the consortium of bacteria Enterococcus faecium and Veilonella parvula in the feeding of ruminants / Avaliação in vitro e in vivo do soro de leite fermentado pelo consórcio de bactérias Enterococcus faecium e Veilonella parvula na alimentação de ruminantes
The industry of dairy products is gradually growing along the last years, standing out the cheese production. One of the by-products obtained of the production of the cheese is the cheese whey. This one presents high demand biochemistry of oxygen (DBO), that when being discarded in rivers or public sewers, it represents important environmental problem. Like
Publicado em: 2008
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6. Antibacterial activity of indole alkaloids from Aspidosperma ramiflorum
We evaluated the antibacterial activities of the crude methanol extract, fractions (I-V) obtained after acid-base extraction and pure compounds from the stem bark of Aspidosperma ramiflorum. The minimum inhibitory concentration (MIC) was determined by the microdilution technique in Mueller-Hinton broth. Inoculates were prepared in this medium from 24-h broth
Brazilian Journal of Medical and Biological Research. Publicado em: 2006-03
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7. Estudo da termolização de levedura (Saccharomyces cerevisiae) de usina de alcool utilizando microondas
The use of yeasts, especially Saccharomyces cerevisiae, as a food source, has grown considerably in the last few years. Contrary to those destiIled for industrial fermentation, yeast for food must be biologically inactive, but preserving its high protein and vitamin content, such that it can be used for both animal feed and human consumption. The industrial
Publicado em: 2000
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8. The Rate of Synthesis of Glycosaminoglycans and Collagen by Fibroblasts Cultured from Adult Human Liver Biopsies
Adult human liver biopsies were cultured from normal, alcoholic hepatitis, chronic active hepatitis, fibrosis plus alcoholic hepatitis (active cirrhosis), inactive cirrhosis, and drug hepatitis. The synthesis of collagen was estimated in cultures from 58 livers by measuring the conversion of [14C]proline to the [14C]hydroxyproline of collagen; that of glycos
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9. Molecular and Genetic Characterization of Mu Transposable Elements in Zea Mays: Behavior in Callus Culture and Regenerated Plants
Active Mutator lines of maize (Zea mays L.) have a high mutation rate and contain multiple hypomethylated 1.4-kb and 1.7-kb Mu transposable elements. Correlated with the inactivation of the Mutator system, these Mu elements cease to transpose and become more methylated. To determine whether the shock of tissue culture can affect Mutator activities, F(1) prog
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10. Lipoteichoic acid: a specific inhibitor of autolysin activity in Pneumococcus.
The choline-containing pneumococcal lipoteichoic acid (Forssman antigen) is a powerful inhibitor of the homologous autolytic enzyme, an N-acetylmuramyl-L-alanine amidase (EC 3.5.1.28, MUCOPEPTIDE AMIDOHYDROLASE). Low concentrations of deoxycholate can reverse the inhibition. Wall teichoic acid preparations are inactive at several hundred-fold higher concentr
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11. Chromatin structures and transcription of rDNA in yeast Saccharomyces cerevisiae.
The chromatin structure of yeast ribosomal DNA was analyzed in vivo by crosslinking intact cells with psoralen. We found that in exponentially growing cultures the regions coding for the 35S rRNA precursor fall into two distinct classes. One class was highly accessible to psoralen and associated with nascent RNAs, characteristic for transcriptionally active
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12. Production and Partial Purification of Antibiotic Materials Formed by Physarum gyrosum
Pure cultures of Physarum gyrosum were grown on agar plates with autoclaved Escherichia coli suspensions as the growth medium. Portions of such agar, after growth of the slime mold, contained diffusible materials that inhibited the growth of Bacillus subtilis, B. cereus, E. coli, Staphylococcus aureus, and Pseudomonas aeruginosa. Paper chromatography of extr