background and objectives: pseudomonas aeruginosais an important opportunistic pathogen. the mucoid strains of p. aeruginosa produce hyper viscous substances consisting mainly of alginate which have important roles in formation of biofilm.we investigated the effect of essential oil of matricaria chamomilla l. on biofilm production in p. aeruginosa. material and methods: p. aeruginosa 8821m was ...

Salmonella enterica serovar Typhi can colonize the gallbladder and persist in an asymptomatic carrier state that is frequently associated with the presence of gallstones. We have shown that salmonellae form bile-mediated biofilms on human gallstones and cholesterol-coated surfaces in vitro. Here, we test the hypothesis that biofilms on cholesterol gallbladder stones facilitate typhoid carriage ...

Nature Communications 7:12217 doi: 10.1038/ncomms12217 (2016); Published 2 Aug 2016; Updated 28 Apr 2017 Two previous studies (Vargas et al. 2013, Liu et al. 2014) reporting that conductive pili are required for long-range electron transport in Geobacter sulfurreducens were inadvertently omitted from the reference list of this Article, and should have been cited in the Introduction section wher...

background and objectives: biofilm formation is an important virulence factor for methicillin-resistant staphylococcus aureus (mrsa). fosfomycin is a borad-spectrum antibiotic with inhibitory effects on biofilm production and β-chloro-l-alanine (β-cla) is an amino acid analog. the aim of this study was to determine effect of the combination of fosfomycin and β-cla on biofilm production by mrsa ...

conclusions: it can be concluded that most of a. baumannii isolates can form biofilm in microtiter plate and tube. the results also verified that most of these isolates were resistant to ciprofloxacin and imipenem. results: results showed that in tube method under shaking, 22% of clinical isolates were strong biofilm producers while 23% of them were not able to form biofilms. in this experiment...

background : reports on the association of nosocomial bacterial infections with indwelling medical devices such as intravenous catheters (ivc) has increased in recent years. the potential to form biofilm on these devices seems to be the main reason for establishment of such infections. the aim of this study was to measure the potential of biofilm formation by bacterial isolates from ivcs. metho...

conclusions bacterial resistance against quaternary ammonium compounds is increasing which can increase the bacterial biofilm formation. results the means of strains growth increase after the minimal inhibitory concentration (mic) were significant in all the bacteria (except for e. coli in 1/32 and s. agalactiae in of 1/8 mic). biofilm formation increased with decrease of antiseptics concentrat...

The research revealed in the paper considers improvement of secondary treatment wastewater aerobic reactor to provide removal organics and nutrients. There were five types polymer biofilm carriers taken into account initially; however, two them decided not apply due technological reasons. main part was divided three substages investigate each type carrier. According literature review, optimal e...

Nowadays silver nanoparticles (AgNPs) are used as antimicrobial due to its well known physical, chemical, and biological properties. A large collection of bacterial cells adhering to a surface is called bacterial biofilm. Exposure to silver nano particles (AgNPs) may prevent colonization of new bacteria onto the biofilm. In the present work, we have investigated whether the biofilm format...