نتایج جستجو برای: pseudomonas aeruginosa pao1

تعداد نتایج: 55859  

Journal: :Langmuir : the ACS journal of surfaces and colloids 2010
Kevin Feris Caitlin Otto Juliette Tinker Denise Wingett Alex Punnoose Aaron Thurber Madhu Kongara Maryam Sabetian Bonnie Quinn Charles Hanna David Pink

Nanoscale materials can have cytotoxic effects. Here we present the first combined empirical and theoretical investigation of the influence of electrostatic attraction on nanoparticle cytotoxicity. Modeling electrostatic interactions between cells and 13 nm spheres of zinc oxide nanoparticles provided insight into empirically determined variations of the minimum inhibitory concentrations betwee...

Journal: :Journal of bacteriology 1990
D L McBeth

The effect of the CAM-OCT plasmid on responses to UV irradiation of Pseudomonas aeruginosa recA mutants was characterized. Mutant alleles examined included rec-1, rec-2, and recA7::Tn501. The plasmid substantially enhanced both survival and mutagenesis of RecA- cells after treatment with UV light. Survival of the RecA-(CAM-OCT) cells after UV irradiation was intermediate between that seen in th...

Journal: :Applied and environmental microbiology 2008
Aine Fox Dieter Haas Cornelia Reimmann Stephan Heeb Alain Filloux Romé Voulhoux

Pseudomonas aeruginosa undergoes spontaneous mutation that impairs secretion of several extracellular enzymes during extended cultivation in vitro in rich media, as well as during long-term colonization of the cystic fibrosis lung. A frequent type of strong secretion deficiency is caused by inactivation of the quorum-sensing regulatory gene lasR. Here we analyzed a spontaneously emerging sublin...

2017
Hong Chang Jin Zhou Xiaoshan Zhu Shenchen Yu Lu Chen Hui Jin Zhonghua Cai

A novel strategy for combating pathogens is through the ongoing development and use of anti-quorum sensing (QS) treatments such as therapeutic bacteria or their anti-QS substances. Relatively little is known about the bacteria that inhabit the open ocean and of their potential anti-pathogenic attributes; thus, in an initiative to identify these types of therapeutic bacteria, planktonic microbes...

Journal: :Applied and environmental microbiology 2003
Jean J Huang Jong-In Han Lian-Hui Zhang Jared R Leadbetter

Acyl-homoserine lactones (AHLs) are employed by several Proteobacteria as quorum-sensing signals. Past studies have established that these compounds are subject to biochemical decay and can be used as growth nutrients. Here we describe the isolation of a soil bacterium, Pseudomonas strain PAI-A, that degrades 3-oxododecanoyl-homoserine lactone (3OC12HSL) and other long-acyl, but not short-acyl,...

Journal: :Applied and environmental microbiology 2006
Andrea Campisano Christine Schroeder Mirle Schemionek Joerg Overhage Bernd H A Rehm

The function of pslD, which is part of the psl operon from Pseudomonas aeruginosa, was investigated in this study. The psl operon is involved in exopolysaccharide biosynthesis and biofilm formation. An isogenic marker-free pslD deletion mutant of P. aeruginosa PAO1 which was deficient in the formation of differentiated biofilms was generated. Expression of only the pslD gene coding region resto...

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