نتایج جستجو برای: biofilm carriers
تعداد نتایج: 68942 فیلتر نتایج به سال:
Objective(s): Staphylococcus aureus is an important bacterial pathogen responsible for a variety numbers of nosocomial and community acquired infections. Biofilm formation is regarded as an important factor in the establishment of S. aureus infection. The contribution of the genetic background of S. aureus to biofilm formation is poorly understood. The aim of the present work was to genotype S....
Microbial biofilm layer could grow on bed surfaces and affect the normal sediment properties following polluting of water resources. However, limited research is done to measure the effects of biofilm in the long run. The objective of this study was to investigate the erosion-deposition phenomena considering factors such as sediment concentration, flow velocity and bed surface along the flum...
Purpose. The main purpose of the article is to develop a numerical model for analysis process biological wastewater treatment in reactor with mobile biocenosis. Methodology. For mathematical modeling moving biocenosis, hydrodynamic non-viscous vortex-free flow used. We calculated boundary conditions equation on surfaces bioreactor, solid walls, and upper surface; at inlet boundary; outlet from ...
Actinobacillus pleuropneumoniae is a Gram-negative bacterium and the causative agent of porcine pleuropneumonia, highly contagious disease pigs characterised by fibrinohaemorrhagic necrotising pneumonia. Although it has been well controlled in some developed countries, outbreaks can occur all ages contact with asymptomatic carriers, leading to significant economic losses swine industry due high...
BACKGROUND Numerous strategies have been developed for the display of heterologous proteins in the surface of live bacterial carriers, which can be used as vaccines, immune-modulators, cancer therapy or bioremediation. Bacterial biofilms have emerged as an interesting approach for the expression of proteins of interest. Bacillus subtilis is a well-described, endospore-forming organism that is a...
Background and Objectives: Biofilms are a community of bacteria on surfaces coated with extracellular polymeric materials, and one strategy to remove biofilms is to use nanoparticles. The aim of this study was to synthesize green zinc oxide (ZnO) nanoparticles and determine its anti-biofilm effects on biofilm gene expression in multidrug-resistant Klebsiella pneumoniae strains. Materials and M...
Background and Objective: Staphylococcus epidermidis produces extracellular polysaccharide which is known as a biofilm. Biofilm is highly effective in establishing of this bacterium infections and can be formed on medical devices that are used in the body. The purpose of this study was to evaluate the effects of silver colloidal nanoparticles on bacterial growth and biofilm form...
Honey is an excellent source of polyphenolic compounds that are effective in attenuating quorum sensing (QS), a chemical process of cell-to-cell communication system used by the opportunistic pathogen Pseudomonas aeruginosa to regulate virulence and biofilm formation. However, lower water solubility and inadequate bioavailability remains major concerns of these therapeutic polyphenols. Its ther...
Objective(s):Staphylococcus aureus is a Gram-positive pathogen, well known for its resistance andversatile lifestyle. Under unfavourable conditions, it adapts biofilm mode of growth. For staphylococcal biofilm formation, production of extracellular polymeric substances (EPS) is a pre-requisite, which is regulated by ica operon-encoded enzymes. This study was designed to know the impact of ascor...
Salmonella Typhi is the primary causative agent of typhoid fever; an acute systemic infection that leads to chronic carriage in 3–5% individuals. Chronic carriers are asymptomatic, difficult treat and serve as reservoirs for outbreaks. Understanding factors contribute key development novel therapies effectively resolve fever. Herein, although we observed no distinct clustering isolates via phyl...
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