Introduction: Although bacteria producing biofilm are more resistance to antimicrobial agents, biofilm formation can stimulated by sub-minimal inhibitory concentrations (sub-MICs) of some antimicrobial agents. Therefore, we designed present study to investigate the  in vitro efficacy of several antibiotics (including ceftazidime, piperacillin, ticarcillin, carbenicillin, aztreonam, merop...

conclusions the findings of the present study well demonstrated that the p. aeruginosa biofilm-producing isolates were more resistant to the tested antibiotics. furthermore, because of wide distribution, it seems that the psla gene is associated with biofilm formation. results biofilm formation was observed in 70% of the p. aeruginosa isolates. the potential formation of biofilm was significant...

objective(s) methicillin-resistant staphylococcus aureus (mrsa) is an important cause of nosocomial and community infections. biofilm formation, mediated by a polysaccharide intercellular adhesin (pia) and encoded by the ica operon, is considered to be an important virulence factor in both s. epidermidis and s. aureus. however, the clinical impact of the ica locus and pia production is less wel...

S torage and distribution systems for water and water-based fluids are both critical and ubiquitous in every industry, geography, and culture. Large scale industrial water handling systems require water storage and distribution for a range of applications from simple thermal control (cooling and heating systems) to Purified Water (PW) production and delivery. For more than 40 years, manufacture...

conclusions biofilm formation (both strong and weak) strongly correlated with psla gene carriage. biofilm formation also correlated with mbl and ampc β-lactamase production. more importantly, multiple-β-lactamase phenotype was associated with formation of strong biofilms. results biofilm formation was observed in 43.5% of the isolates, of which 66.7% produced strong and 33.3% formed weak biofil...

Background & Aims: Emergence of biofilm producing Proteus strains created a serious problem in the treatment of catheter-associated urinary tract infections. The aim of this research was to study biofilm production and plasmid pattern of proteus strains associated with Urinary tract infection. Methods: A total of 88 strains of Proteus were isolated from samples collected in hospitals of Kerman/...

Background and Purpose: In people wearing dentures, the growth of various Candida species under the prosthesis leads to the formation of biofilm, which can play the role of a reservoir for Candida and other kinds of microbes. Since nano-chitosan particles can cause lasting antimicrobial activity, a more recent approach that utilizes acrylic resins with nano-chitosan particles is proposed. Th...

results the combination of bismuth ethanedithiol with ciprofloxacin showed synergistic inhibitory effect on the p. aeruginosa biofilm formation. the combination of bismuth ethanedithiol ciprofloxacin, ceftazidime and imipenem showed synergistic inhibitory effects on the biofilm formation. furthermore, the combination of bismuth ethanedithiol, imipenem and ceftazidime did not show any synergisti...

objective(s): bacterial biofilm formation causes many persistent and chronic infections. the matrix protects biofilm bacteria from exposure to innate immune defenses and antibiotic treatments. the purpose of this study was to evaluate the biofilm formation of clinical isolates of pseudomonas aeruginosa and the activity of zinc oxide nanoparticles (zno nps) on biofilm. materials and methods: aft...