Efflux System
Mostrando 1-12 de 436 artigos, teses e dissertações.
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1. Detection of efflux pump CmeABC in enrofloxacin resistant Campylobacter spp. strains isolated from broiler chickens (Gallus gallus domesticus) in the state of Rio de Janeiro, Brazil
RESUMO: As aves são os principais reservatórios de Campylobacter spp., importante patógeno de origem alimentar e a carne de frango e produtos derivados são os principais veículos desse microrganismo. O aumento de cepas de Campylobacter spp. resistentes às fluorquinolonas, uma classe antimicrobiana frequentemente empregada na avicultura e na medicina hu
Pesq. Vet. Bras.. Publicado em: 04/11/2019
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2. Soil respiration dynamics in forage-based and cereal-based cropping systems in central Italy
ABSTRACT: Studies that have investigated soil carbon dynamics under Mediterranean conditions are scarce and fragmented and contrasting results have often been reported. This study aimed to fill some gaps in our knowledge by: (i) determining annual dynamics of total (RS) and heterotrophic (RH) soil respiration; (ii) estimating annual cumulative RS and RH; and
Sci. agric. (Piracicaba, Braz.). Publicado em: 05/09/2019
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3. Draft genome sequence of a GES-5-producing Serratia marcescens isolated in southern Brazil
Abstract Serratia marcescens is a Gram-negative rod intrinsically resistant to polymyxins and usually associated with wound, respiratory and urinary tract infections. The whole genome of the first GES-5-producing S. marcescens isolated from a Brazilian patient was sequenced using Ion Torrent PGM System. Besides blaGES-5, we were able to identify genes encodi
Braz. J. Microbiol.. Publicado em: 2017-06
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4. Alternative Model for RND-Type Efflux Pump
RND (resistance-nodulation-division) transporters are found in several Gram-negative bacteria species. These proteins form a complex along with membrane fusion proteins and outer membrane factors. This complex acts as an efflux pump, transporting several different molecules directly from the cytoplasm to the extracellular medium. Although the crystallographi
J. Braz. Chem. Soc.. Publicado em: 2016-12
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5. A novel approach in mucoadhesive drug delivery system to improve zidovudine intestinal permeability
ABSTRACT Zidovudine (AZT) mucoadhesive solid dispersions (SD) were prepared using a sodium starch glycolate (SSG) and hypromellose phthalate (HPMCP) mixtures as carrier to enhance the intestinal permeability and bioavailability of zidovudine. SDs were prepared using the co-precipitation method followed by solvent evaporation and characterized according to th
Braz. J. Pharm. Sci.. Publicado em: 2016-12
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6. Genotypic and phenotypic detection of efflux pump in Rhodococcus equi
The req_39680 gene, associated to a putative efflux system, was detected in 60% (54/90) of R. equi isolates by PCR. The phenotypic expression of efflux mechanism was verified in 20% of the isolates using ethidium bromide. For the first time, the expression of efflux mechanism was demonstrated in R. equi.
Braz. J. Microbiol.. Publicado em: 2014-06
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7. Contribution of different mechanisms to the resistance to fluoroquinolones in clinical isolates of Salmonella enterica
OBJECTIVES: To study the potential factors include gene mutation, efflux pump and alteration of permeability associated with quinolone-resistance of Salmonella enterica strains isolated from patients with acute gastroenteritis and to evaluate the degree of synergistic activity of efflux pump inhibitors when combined with ciprofloxacin against resistant isola
Braz J Infect Dis. Publicado em: 2013-08
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8. Estudo do sistema BlaR/Blal e de dois operons codificando sistemas de efluxo RND em Caulobacter crescentus. / Study of the BlaR/BlaI system and two operons encoding RND efflux systems from Caulobacter crescentus.
The aim of this work is to characterize three clusters of genes from the alpha proteobacterium Caulobacter crescentus involved in metal and antibiotics response. We analyzed the cluster comprising genes CC1637-CC1640, which contains a BlaR/BlaI signal transduction system, and we performed a comparative analysis with two RND efflux systems consisting on genes
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/04/2012
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9. Effects of xylem water transport on CO2 efflux of woody tissue in a tropical tree, Amazonas State, Brazil
We assessed the effect of xylem sap flux on radial CO2 efflux of woody tissue of a tropical trees species growing in the Center of Manaus (Amazonas State, Brazil). An open chamber system was used to constantly measure diurnal changes in CO2 efflux over several days. Xylem sap flux was monitored additionally. We found a strong relationship between temperature
Hoehnea. Publicado em: 2012-03
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10. Análise molecular de mecanismos determinantes de resistência a antibióticos em Pseudomonas aeruginosa e Acinetobacter ssp. / Molecular evaluation of the mechanisms that determine antimicrobial resistance in Pseudomonas aeruginosa and Acinetobacter spp.
P. aeruginosa e espécies de Acinetobacter são causas comuns de diversas infecções em pacientes hospitalizados, principalmente nos internados em centros de tratamento intensivo. Além disso, esses microrganismos se destacam por apresentarem resistência, intrínseca e adquirida, a várias classes de antibióticos, conferindo à bactéria fenótipos de mul
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 19/08/2011
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11. Estimativa da difusividade de N2O no solo pela Lei de Fick utilizando os dados de fluxo e perfil de concentração de CO2 no solo.
Fluxo a partir da câmara estática fechada e amostragem de gases do perfil do solo; Estimativa da difusividade; Cálculo do fluxo e produção de N2O pela técnica de concentração no perfil do solo; Análises estatísticas. 0 objetivo do presente trabalho foi testar um novo método para avaliar a difusividade de gases do solo para estudos com N2O, baseado
Seropédica: Embrapa Agrobiologia. Publicado em: 2011
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12. Efeito da glicose sobre os mecanismos de extrusão de prótons em células MDCK. / Effect of glucose on mechanisms of proton extrusion in MDCK cells.
This study investigated the effect of glucose on the activity and expression of Na+/H+ exchanger isoform 1 (NHE1) and vacuolar H+-ATPase, in Mardin Darby Canine Kidney (MDCK) cells from dog kidney, with similar characteristics to principal and intercalated cells of the distal nephron. The pHi recovery rate (dpHi/dt) and the buffering capacity ( Publicado em: 2010