A biofilm is an aggregate of microorganisms in which cells adhere to biological or non-biological surfaces and is responsible for various infectious diseases. Infections caused by Staphylococcus aureus, including pneumonia, endocarditis, and osteomyelitis, are often associated with colonization and biofilm formation. Although lipoteichoic acid (LTA) is involved in biofilm formation, the specifi...

The natural transmission of Yersinia pestis is reliant upon biofilm blockage of the flea vector. However, the environmentally-responsive adaptive regulators which facilitate Y. pestis biofilm production in accordance with the flea midgut milieu are not well understood. We seek to establish the impact of available carbon source metabolism and storage upon Y. pestis biofilm production. Our findin...

Objective(s): The present study aimed to investigate the antibacterial and anti-biofilm potential of the non-oxidized form of zinc nanoparticles (Zn NPs) prepared by a ‘green approach’ using the Lavandula vera extract with microwave irradiation.Materials and Methods: After synthesis of Zn NPs, the microdilution and disk diffusion methods was applied for antimicrobial evaluation followed b...

Background and Purpose: Today, treatment of life-threatening fungal infections, caused by Candida species, has become a major problem. In the present study, we aimed to evaluate the antifungal susceptibility patterns of different clinical Candida isolates, determine the virulence factors in multi-drug resistant (MDR) Candida species, and assess the anti-biofilm activity of Elettaria cardamomum ...

Background & Aims: Microorganisms are protected from antimicrobial agents when placed in biofilm structure. Biofilm-producing microorganisms are responsible for many problems in industry and medicine; therefore, it is essential to find new techniques for removing and inhibiting biofilms. This study aimed to examine the antimicrobial effect of Eucalyptus camaldulensis alcoholic extracts against ...

background: members of the vannellidae family are free-living amoebae (fla) distributed mainly in water and soil sources. the present study reports the first isolation of this genus in the biofilm source from hospital environment in tehran, iran. methods: biofilm samples were collected from hospital environment. cultivation was performed in non-nutrient agar covered with a heat-killed escherich...

Influence of the frequently used carbon sources in nitrate removal processes were evaluated in a lab-scale biofilm reactor. The NO3-N removal efficiency was in the order acetate>glucose>methanol>ethanol. Acetate-fed biofilm reduced nearly 100% NO3-N with negligible amount of NO2-N accumulation. Although 99% NO3-N was reduced in the glucose-fed biofilm, substantial NH3-N and NO2-N accumulated. M...

Objectives:Biofilms are communities of bacteria attached to surfaces through an external polymeric substances matrix. In the meantime, Acinetobacterbaumannii is the predominant species related to nosocomial infections. In the present study, the effect of silver nanoparticles alone and in combination with biocides and imipenem against planktonic and biofilms of A. baumannii was assessed.  Materi...

BACKGROUND Biofilm formation of Staphylococcus epidermidis is a major etiological factor of inducing device-related infections. OBJECTIVES The ability of biofilm formation by the S. epidermidis was assessed in vitro on two brands of foldable (hydrophilic) and two brands of rigid (hydrophobic) intraocular lens materials in order to investigate the role of lens material in postoperative endopht...