OBJECTIVE To determine the frequency of isolation of coagulase-negative staphylococci and their resistance to methicillin over a period of time. METHODS The descriptive cross-sectional study was carried out at Army Medical College, Rawalpindi, from June 2009 to May 2012, and comprised clinical samples mostly from patients admitted to the intensive care unit. They were inoculated onto appropri...

The aim of this study was to examine phenotypic and genotypic antimicrobial resistance of staphylococci from milk samples from cows with subclinical and clinical mastitis and from cows without mastitis symptoms to methicillin, tetracyclines, macrolides and lincosamides (ML). Of 207 strains, including 34 S. aureus and 173 coagulase-negative staphylococci (CNS), 11 (6.4%) CNS strains were phenoty...

OBJECTIVE To evaluate risk factors associated with methicillin-resistant Staphylococcus aureus (MRSA) bacteremia emergence, its prognosis, and mortality-determining factors in critically ill patients in Colombia. METHODS A multicenter, retrospective cohort study conducted in 2005-2008 at 16 public and private reference health care institutions in Bogotá, Colombia, that form part of a national...

femA is a chromosomally encoded factor, occurring naturally in Staphylococcus aureus, which is essential for the expression of high-level methicillin resistance in this organism. The production of a low-affinity penicillin-binding protein, PBP2a or PBP2', which is intimately involved with methicillin resistance in S. aureus, is not influenced byfenmA. To elucidate a possible physiological funct...

Gravenkemper, Charles F. (University of Washington School of Medicine, Seattle), Jean L. Brodie, and William M. M. Kirby. Resistance of coagulase-positive staphylococci to methicillin and oxacillin. J. Bacteriol. 89:1005-1010. 1965.-Two strains resistant to methicillin were discovered among 541 strains of Staphylococcus aureus isolated in a clinical laboratory during a 1-yr period, and their pr...

introduction: methicillin-resistant staphylococcus aureus (mrsa) can cause serious and life-threatening hospital- and community-acquired infections. colonized and infected patients represent the most important reservoir of mrsa in health care facilities. therefore, in this study, mrsa isolates collected from shohada hospital in tabriz were evaluated for the frequency of meca gene and their anti...

OBJECTIVE To examine the differences between the clinical presentation, management and outcome of persons bacteremic with methicillin-resistant Staphylococcus aureus (MRSA) and methicillin-sensitive Staphylococcus aureus (MSSA), after controlling for age, sex and primary diagnosis. METHODS A review of the clinical records and laboratory data of all MRSA and MSSA bacteremic patients. Fifty mat...

Characteristics of Prophage Patterns and Virulence Gene Profiles among Methicillin-Resistant Staphylococcus aureus Isolates from Patients with Diabetic Foot Infections in a Referral Hospital Tehran, Iran

conclusions in our study, inducible clindamycin resistance rate was 4%; so it is necessary to conduct d-test regularly by disc diffusion for this bacterium. resistance to erythromycin, clindamycin, ciprofloxacin and gentamicin was significantly higher in mrsa isolates than methicillin susceptible staphylococcus aureus (mssa), although the methicillin resistance prevalence was low. background st...

Nasal carriage of methicillin-resistant staphylococcus aureus among ICU personnel working at Zahedan University, southeastern Iran