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Registros recuperados: 66 | |
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Nair,Anusree V.; Joseph,Neetha; Krishna,Kiran; Sneha,K. G.; Tom,Neenu; Jangid,Kamlesh; Nair,Shanta. |
Pseudomonas aeruginosa is a ubiquitous Gram-negative bacterium having a versatile metabolic potential and great ecological and clinical significance. The geographical distribution of P. aeruginosahas revealed the existence of an unbiased genetic arrangement in terrestrial isolates. In contrast, there are very few reports about P. aeruginosa strains from marine environments. The present work was aimed at studying the distribution of P. aeruginosa in coastal waters along the Indian Peninsula and understanding the environmental influence on genotypic, metabolic and phenotypic characteristics by comparing marine and clinical isolates. Of the 785 marine isolates obtained on selective media, only 32 (~4.1%) were identified as P. aeruginosa, based on their fatty... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Pseudomonas aeruginosa; Biogeography; FAME profiling; Arbitrarily primed PCR; Environmental distribution. |
Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822015000300725 |
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Lazzari,Andrea Maria; Vargas,Agueda Castagna de; Dutra,Valéria; Graça,Dominguita Lühers; Headley,Selwyn Arlington; Costa,Mateus Matiuzzi da. |
Este relato descreve a infecção por Pseudomonas aeruginosa e surtos ocasionados por Bordetella bronchiseptica em chinchilas pertencentes a criatórios da região de Santa Maria, RS, Brasil. Os animais afetados apresentavam apatia, anorexia e dificuldade respiratória, acompanhada de secreção nasal mucopurulenta. O isolamento de Pseudomonas aeruginosa foi realizado pela cultura de amostra de tecido pulmonar, enquanto a Bordetella bronchiseptica foi isolada de pulmão, fígado e swab de secreção traqueal. São relatados e discutidos os dados clínicos e achados patológicos, assim como o isolamento e identificação desses agentes. |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chinchilla laniger; Bordetella bronchiseptica; Pseudomonas aeruginosa; Roedores. |
Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782001000200025 |
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Jouault, Albane; Gobet, Angelique; Simon, Marjolaine; Portier, Emilie; Perennou, Morgan; Corre, Erwan; Gaillard, Fanny; Vallenet, David; Michel, Gurvan; Fleury, Yannick; Bazire, Alexis; Dufour, Alain. |
The aim was to identify and study the antibiofilm protein secreted by the marine bacterium Pseudoalteromonas sp. 3J6. The latter is active against marine and terrestrial bacteria, including Pseudomonas aeruginosa clinical strains forming different biofilm types. Several amino acid sequences were obtained from the partially purified antibiofilm protein, named alterocin. The Pseudoalteromonas sp. 3J6 genome was sequenced and a candidate alt gene was identified by comparing the genome-encoded proteins to the sequences from purified alterocin. Expressing the alt gene in another non-active Pseudoalteromonas sp. strain, 3J3, demonstrated that it is responsible for the antibiofilm activity. Alterocin is a 139-residue protein including a predicted 20-residue... |
Tipo: Text |
Palavras-chave: Antibiofilm protein; Pseudoalteromonas; Pseudomonas aeruginosa; Biofilm. |
Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00643/75517/76405.pdf |
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F. LUCENA,Bruno F; TINTINO,Saulo R; FIGUEREDO,Fernando G; DE M. OLIVEIRA,Cícera Datiane; DOS S. AGUIAR,José J; DO N. CARDOSO,Edmilson; A. DE AQUINO,Pedro E; ANDRADE,Jacqueline C; M. COUTINHO,Henrique D; F. MATIAS,Ednardo F. |
Vários trabalhos vêm demonstrando a importância do estudo de produtos naturais como fonte alternativa para novos antimicrobianos ou que venham potencializar os já existentes. Neste contexto este trabalho teve como objetivo investigar a atividade antibacteriana e as possíveis interações entre o óleo essencial de Cymbopogon citratus combinados a aminoglicosídeos frente a linhagens padrões e multirresistentes de S. aureus, E. coli e de P. aeruginosa provenientes de isolados clínicos. Um ensaio de microdiluição foi realizado para verificar a atividade antibacteriana e as possíveis interacções entre o produto natural e os antibióticos, utilizando uma concentração sub-inibitória. Através dos resultados foi constatado a interferência sinérgica dos... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cymbopogon citratus; Escherichia coli; Óleo essencial; Pseudomonas aeruginosa; Staphylococcus aureus. |
Ano: 2015 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2015000100005 |
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Lima,Jailton Lobo da Costa; Alves,Lilian Rodrigues; Jacomé,Paula Regina Luna de Araújo; Bezerra Neto,João Pacífico; Maciel,Maria Amélia Vieira; Morais,Marcia Maria Camargo de. |
ABSTRACT Introduction: Biofilm production is an important mechanism for the survival of Pseudomonas aeruginosa and its relationship with antimicrobial resistance represents a challenge for patient therapeutics. P. aeruginosa is an opportunistic pathogen frequently associated to nosocomial infections, especially in imunocompromised hosts. Objectives: Analyze the phenotypic biofilm production in P. aeruginosa isolates, describe clonal profiles, and analyze quorum sensing (QS) genes and the occurrence of mutations in the LasR protein of non-biofilm producing isolates. Methods: Isolates were tested for biofilm production by measuring cells adherence to the microtiter plates. Clonal profile analysis was carried out through ERIC-PCR, QS genes were by specific... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Pseudomonas aeruginosa; Biofilm; Multiresistance; Quorum sensing (QS). |
Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702018000200129 |
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Kaskatepe,Banu; Yildiz,Sulhiye; Gumustas,Mehmet; Ozkan,Sibel A.. |
The aim of this study was to increase rhamnolipid production by formulating media using kefir and fish meal for Pseudomonas aeruginosa strains isolated from different environmental resources. The strains, named as H1, SY1, and ST1, capable of rhamnolipid production were isolated from soil contaminated with wastes originating from olive and fish oil factories. Additionally, P. aeruginosa ATCC 9027 strain, which is known as rhamnolipid producer, was included in the study. Initially, rhamnolipid production by the strains was determined in Mineral Salt Medium (MSM) and then in media prepared by using kefir and fish meal. The obtained rhamnolipids were purified and quantified according to Dubois et al. (1956). The quantity of rhamnolipids of ATCC, H1 and SY1... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biosurfactant; Pseudomonas aeruginosa; Rhamnolipid; Kefir; Fish meal. |
Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822015000300855 |
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Sánchez,Lilian; Tromps,Jeannette. |
Las propiedades beneficiosas de las bacterias ácido lácticas (BAL) posibilitan su uso como probióticas en animales y humanos. El objetivo del presente trabajo fue caracterizar, mediante pruebas in vitro, cepas BAL procedentes de fuente animal para considerar su posterior aplicación como probiótico en animales. Se evaluaron 72 cepas, identificadas hasta el nivel de género, de Lactobacillus spp., Leuconostoc spp., Lactococcus spp., Streptococcus spp. y Pediococcus spp. A todas las cepas se les determinó su estabilidad de crecimiento a diferentes pH, temperatura y tolerancia a altas concentraciones de cloruro de sodio. De ellas se seleccionaron 14 cepas que presentaron las mejores características como candidatos a probióticas por sus resultados a las pruebas... |
Tipo: Journal article |
Palavras-chave: Bacterias ácido-láctica; Probióticos; Bacillus cereus; Staphylococcus aureus; Salmonella spp.; Pseudomonas aeruginosa. |
Ano: 2014 |
URL: http://scielo.sld.cu/scielo.php?script=sci_arttext&pid=S0253-570X2014000200008 |
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Gales,Ana C.; Torres,Patrícia L.; Vilarinho,Dominique S. O.; Melo,Renata S.; Silva,Claudinéia F. L.; Cereda,Rosângela F.. |
The genetic similarity of carbapenem-resistant Pseudomonas aeruginosa strains isolated in the Hospital Universitário São Francisco, Bragança Paulista, São Paulo, Brasil, was evaluated by pulsed field gel electrophoresis (PFGE). A unique clone was detected among 5 of 7 isolates, suggesting that cross-contamination might have played a role in the spread of carbapenem-resistant P. aeruginosa strains. Interestingly, a similar PFGE pattern was encountered in a P. aeruginosa strain isolated from Hospital São Paulo that was used as a PFGE control. |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Pseudomonas aeruginosa; PFGE; Carbapenem. |
Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702004000400001 |
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Bisht,Deepali; Yadav,Santosh Kumar; Darmwal,Nandan Singh. |
Alkaline lipase production by mutant strain of Pseudomonas aeruginosa MTCC 10,055 was optimized in shake flask batch fermentation using response surface methodology. An empirical model was developed through Box-Behnken experimental design to describe the relationship among tested variables (pH, temperature, castor oil, starch and triton-X-100). The second-order quadratic model determined the optimum conditions as castor oil, 1.77 mL.L-1; starch, 15.0 g.L-1; triton-X-100, 0.93 mL.L-1; incubation temperature, 34.12 ºC and pH 8.1 resulting into maximum alkaline lipase production (3142.57 U.mL-1). The quadratic model was in satisfactory adjustment with the experimental data as evidenced by a high coefficient of determination (R²) value (0.9987). The RSM... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Alkaline lipase; Box-Behnken design; Pseudomonas aeruginosa; Response surface methodology. |
Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000100035 |
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Umadevi,Sivaraman; Joseph,Noyal M; Kumari,Kandha; Easow,Joshy M; Kumar,Shailesh; Stephen,Selvaraj; Srirangaraj,Sreenivasan; Raj,Sruthi. |
We studied the prevalence of ceftazidime resistance in Pseudomonas aeruginosa and the rates of extended-spectrum β-lactamase (ESBL), AmpC β-lactamase (AmpC) and metallo-β-lactamase (MBL) production among the ceftazidime resistant Pseudomonas aeruginosa. A very high rate of MBL production was observed, which suggested it to be an important contributing factor for ceftazidime resistance among Pseudomonas aeruginosa. |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Extended-spectrum β-lactamases; AmpC; Metallo-β-lactamases; Ceftazidime resistance; Pseudomonas aeruginosa. |
Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822011000400006 |
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Registros recuperados: 66 | |
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