Antibiotic susceptibility of Staphylococcus aureus with different degrees of biofilm formation

Does biofilm formation have different pathways in Staphylococcus aureus?

Objective(s): Biofilm formation is one of the most important factors in the development of infections caused by Staphylococcus aureus. In this study, the expression levels of genes responsible for biofilm formation were studied in methicillin sensitive and methicillin resistant S. aureus.Materials and Methods: A total of 100 meticillin-r...

Evaluation of Wi-Fi Radiation Effects on Antibiotic Susceptibility, Metabolic Activity and Biofilm Formation by Escherichia Coli 0157H7, Staphylococcus Aureus and Staphylococcus Epidermis

Background: The radiation emitted from electromagnetic fields (EMF) can cause biological effects on prokaryotic and eukaryotic cells, including non-thermal effects. Objective: The present study evaluated the non-thermal effects of wireless fidelity (Wi-Fi) operating at 2.4 GHz part of non-ionizing EMF on different pathogenic bacterial strains (Escherichia coli 0157H7, Staphylococcus aureu...

Small colony variants in Staphylococcus aureus and other species: antibiotic selection, antimicrobial susceptibility, and biofilm formation

Antibiotic susceptibility of community-acquired Staphylococcus aureus.

55% of a sample of patients in a rural community, and 76% of a sample of patients and staff in the local district hospital were found to be nasal carriers for Staphylococcus aureus. The in vitro antibiotic susceptibility patterns of 46 strains of S. aureus isolated in nasal carriers as well as of 43 strains in community-acquired skin infections were characterised. High levels of resistance were...

Phosphorylation of Staphylococcus aureus Protein-Tyrosine Kinase Affects the Function of Glucokinase and Biofilm Formation

Background: When Staphylococcus aureus is grown in the presence of high concentration of external glucose, this sugar is phosphorylated by glucokinase (glkA) to form glucose-6-phosphate. This product subsequently enters into anabolic phase, which favors biofilm formation. The presence of ROK (repressor protein, open reading frame, sugar kinase) motif, phosphate-1 and -2 sites, and tyrosine kina...