The ability of 258 strains of Staphylococcus aureus and 132 strains of S. epidermidis to produce L-form colonies in a standard environment was investigated. Production of these colonies by S. aureus was correlated with their phage type. Phage type 7 strains produced L-form colonies in larger numbers and more consistently than those of phage type 80/81. No L-form colonies were produced by the S....

vinca major, minor and rosea are three species of vinca genus and apocynaceae family. the present work is to investigate antimicrobial effects of these plants against candida albicans, pseudomonas aeroginosa and staphylococus aureus. alkaloids from leaf extracts had a better effect on pseudomonas aeroginosa than alkoloids from stem and root. alkaloids from stem extracts were more effective than...

background: the aim of this study was to compare the biofilm formation and the prevalence of biofilm-associated genes between the isolates of methicillin-resistant (mrsa) and methicillin-susceptible (mssa) staphylococcus aureus. methods: in total, 209 s. aureus isolates were collected. the antibiotic susceptibility test was conducted using nine antibiotics according to the guidelines of clinica...

materials and methods this definitive and cross-sectional study was conducted in tehran, iran. a total of 15 s. aureus isolates were collected from wound samples with sterile swabs and were identified by the conventional diagnostic tests. the antibiotic susceptibility pattern was performed according to the clinical and laboratory standards institute (clsi, 2012) protocol. the meca gene, staphyl...

b a ckground : in fact the biofilms are composed of bacterial cells living inmulticellular structures such as tissues and organs embedded within a self-produced matrix of extracellular polymeric substance (eps). ability to attach and biofilm formation are the most important virulence factors staphylococcus aureus isolates. the aims of this study were to detect intracellular adhesion (ica) locus...

A total of 45 random samples of locally white soft cheese were collected from various dairy shops, street vendors and supermarkets located in Gharbia governorate, Egypt. The samples were represented as Domiati, Tallaga, and Kareish cheese (15 samples of each) were examined for the presence of Staphylococcus aureus organisms. The incidence of Staph. aureus were 13.3%, 26.6% and 26.6% in the exam...

this study was carried out to find the extent of staphylococcal carriages including methicillin resistant staphylococcus aureus mrsa in employee's of teaching university hospitals in yazd. nasal swabs of 742 employees in four different medical teaching hospitals in yazd were collected, and tested for detection of staphylococci strains. out of 742 employees, 94 (12.7%) were carrier of staphyloco...

conclusions since it is highly important to rapidly detect mrsa isolates, especially in nosocomial infections, phenotypic methods may certainly be useful for this purpose. resistance to methicillin in s. aureus shows a substantially increased ability in turanose metabolism. it is concluded that fermentation of turanose at 0.7% dilution could be a rapid detection method for primary screening of ...

background staphylococcus aureus is associated with different infections ranging from skin and soft tissue infections to endocarditis and fatal pneumonia. s. aureus is still the most common bacterial species isolated from inpatient specimens and the second most common from outpatient specimens. today, methicillin resistant s. aureus (mrsa) isolates are present in the hospitals of most countries...

background staphylococcus aureus is an important pathogen of humans in both community acquired as well as nosocomial infections. it is also among the four most common causes of food-borne illnesses. objectives this study was conducted to determine the prevalence of enterotoxin producing s. aureus strains in different raw meat and hamburgers in isfahan. materials and methods from august to decem...