conclusions there were diverse phenotypic changes among vancomycin-non-susceptible s. aureus isolates. this may be due to the variety of related regulatory systems. the diversity of phenotypic expression may result in its misidentification in routine laboratory checks. materials and methods a total of 130 methicillin-resistant s. aureus (mrsa) isolates were studied, including 49 vssa, 28 hvisa,...

patients and methods one hundred thirty-eight clinical specimens collected from different wards of imam reza hospital were identified to the species level by biochemical tests. antimicrobial susceptibility tests against kanamycin, teicoplanin, streptomycin, imipenem, ciprofloxacin, and ampicillin were performed by the disk diffusion method. the minimum inhibitory concentrations of gentamicin, s...

conclusions the present study showed a high prevalence of aminoglycoside-resistance genes among mrsa isolates in two cities in iran. results the results of drug susceptibility testing showed that the highest rate of resistance was against erythromycin in tehran (84.4%) and gentamicin (71.7%) in sari. all isolates were sensitive to vancomycin, and all strains harbored the meca gene. the aac (6’)...

background : infections resulted from multi-resistant staphylococcus aureus are increasing worldwide. in the present study, a multiplex-pcr assay for the detection of antibiotic resistance genes among s. aureus clinical isolates and for the concomitant identification of these isolates was described. methods : a total of 127 s. aureus isolates were collected from clinical specimens at three teac...

promotion of the dietary fiber of foods can enhance human health by reducing the risk of many serious diseases. cakes are among the highly consumed foods but sadly of low fiber content. therefore, increasing the fiber content in them is of great importance, and this was the aim followed in this study. wheat flour was partially replaced at 0, 10, 20 and 30% (w/w) with corn resistant starch (rs),...

background and aims: the aim of present study was to investigate the molecular characteristic of staphylococcus aureus to detect mec a gene and to type sccmec in strain isolated from healthy worker at larestan hospital. material and methods: this study was carried out from the 250 nasal swab healthy worker  at larestan hospital. multiplex polymerase chain reaction for meca gene was performed in...

Ovarian epithelial dysplasia was initially described in material from prophylactic oophorectomies for BReast CAncer gene (BRCA) mutation. Similar histopathological abnormalities have been revealed after ovulation stimulation. Given that tamoxifen (TAM) has a clomid-like effect and is sometimes used to induce ovulation, we studied the morphological features and immunohistochemical expression pat...

conclusions results of the present study showed that the tst and sea genes had high frequencies among the mrsa isolates. the increased prevalence of mrsa isolates containing different virulence genes, probably accompanied by antimicrobial resistance, can complicate the therapy of mrsa isolates. results all the tested isolates were susceptible to vancomycin, but resistant to penicillin (100%), e...

background and aims: lamivudine is amongst the antiviral for drug chronic hepatitis b treatment. during therapy with lamivudine, variants may emerge with ymdd mutation in the reverse transcriptase (rt) region of polymerase gene. this mutation might have a role in drug resistant for hbv. materials and methods: hbv dna extraction from serum sample of 88 patients, were subjected to nested pcr for ...