Glucoprotamin antimicrobial activity against selected standard antibiotic-resistant bacteria and reference strains used in the assessment of disinfection efficacy.

Background: The ability of bacteria to develop common mechanisms of resistance to antibiotics and disinfectants raises doubts about the effectiveness of disinfection processes. Glucoprotamin (GP) is an antimicrobial active substance which is widely used to the disinfection in medical area.

Objective: The aim of study was to compare GP's effectiveness with susceptibility of reference strains used for the evaluation of bactericidal efficacy of disinfectants Staphylococcus aureus (S.

[Significance of efflux pumps in multidrug resistance of Gram-negative bacteria].

The phenomenon of multidrug. resistance of bacteria is a serious problem of modern medicine. This resistance largely is a consequence of abuse and improper use of antibacterial substances, especially antibiotics and chemotherapeutics in hospital settings.

Susceptibility of selected strains used for evaluation of biocidal efficiency of disinfectants and antibiotic-resistant strains to didecyldimethylammonium chloride in 2-propanol.

Introduction: Didecyldimethylammonium chloride is an active substance which is part of variety of formulations used for the disinfection and antisepsis, both in the medical area as well as in the food, industrial and institutional area. Because of the widespread use of this substance and the development of bacterial resistance to quaternary ammonium compounds (QACs), the aim of this study was determination of the susceptibility of the standard strains used for the evaluation of the effectiveness of disinfectants and standard antibiotic-resistant strains to didecyldimethylammonium chloride in 2-propanol and its bactericidal activity.

Methods: Susceptibility of standard strains used for the evaluation of the effectiveness of disinfectants (Staphylococcus aureus ATCC 6538-SA; Pseudomonas aeruginosa ATCC 15442-PA) and standard antibiotic-resistant strains (Staphylococcus aureus ATCC 43300-MRSA; Pseudomonas aeruginosa ATCC 47085-PAO-LAC) to CMAP was determined by minimum inhibitory concentrations (MICs) and minimum bactericidal concentration (MBCs).

Effect of adaptation process of Pseudomonas aeruginosa to didecyldimethylammonium chloride in 2-propanol on bactericidal efficiency of this active substance.

Background: Microorganisms are characterized by two types of resistance innate and acquired. Innate resistance is associated with the construction of the surface structures. Wide use of active substances as antimicrobial compounds, especially in inhibitory concentrations, may promote the acquisition of bacterial resistance to these substances in the process of adaptation.

Effect of different drying conditions for the viability of Candida albicans present on carriers.

Background: Problems in substantial under recovery of Pseudomonas aeruginosa and Candida albicans from carriers have been demonstrated for laboratories performing phase 2, step 2 efficacy tests on disinfectants relative to levels required by the EN 13697 standard. It was thus necessary to determine recoveries of these microorganisms following procedural losses incurred during drying and to optimise drying conditions such that recoveries then complied with the standard.

Objectives: The aim of the study was to establish optimal drying conditions for the recovery of Candida albicans ATCC 10231 from carriers.