نتایج جستجو برای: antibiotic marker free strains
تعداد نتایج: 848093 فیلتر نتایج به سال:
background and objectives: hospital surfaces can serve as reservoirs of potential pathogenic bacteria.staff hands are the main source of bacterial transmission in hospital. the prevalence of bacteria harboring β– lactamase enzyme in staff hands and hospital surfaces, leads to spread of β–lactamase producing bacteria and ultimate increase of antibiotic resistance nosocomial infections. the aim o...
Background and purpose: Actinomycetes were always considered as a source of essential new antibiotic producers and secondary metabolite in pharmaceutical industries. This study aimed to isolate antibiotic producing actinomycetes from sediments of the Caspian Sea and investigate their potential as antifungal metabolites production. Materials and methods: Sediments of the Caspian Sea were collec...
The aim of this study was to determine the occurrence of enterotoxigenic and enteroaggregative Escherichia coli strains and antibiotic resistance of the isolates in raw milk and unpasteurized cheese. Out of 200 samples of raw milk and 50 samples of unpasteurized cheeses, 96 and 24 strains of E. coli were isolated, respectively. Polymerase chain reaction (PCR) was used to detec...
Background & Objective: Gastroenteritis is one of the most common Salmonella infections in human which is caused by Salmonella serotypes especially S.enteritidis and S.typhimurium. The spread of multi-drug resistant (MDR) Salmonella strains is a serious global issue. Obtaining integrons is considered as one of the most important factors in multi-drug resistance among gram-negative microorganism...
The present study was aimed to detect the plasmid profile, the role of plasmid associated multiple antibiotic resistance of Vibrios isolated from coastal waters of Kerala. The isolated plasmids from antibiotic resistant Vibrios were tested for the presence of integrons using polymerase chain reaction (PCR) to elucidate the presence of plasmid borne integron, a key element in horizontal gene tra...
Abstract Background and Objectives: Pseudomonas aeruginosa is the most common organism, which is separated from the burn infections. Due to increased antibiotic resistance, there are many problems to deal with the infections caused by Pseudomonas aeruginosa. This study aimed to determine the resistance to antibiotics against clinical isolates of Pseudomonas using phenotype me...
conclusions our results illustrated the presence of clonal groups of highly gentamicin-resistant strains of mrsa in hospitals in tehran. the php typing method provided useful information for both clonal dissemination and determining the epidemiological links of the clonal groups of the mrsa strains. materials and methods a total of 301 s. aureus isolates were collected during january to novembe...
BACKGROUND The development of antibiotic resistance among Streptococcus pneumoniae strains has caused significant health problems worldwide. OBJECTIVES The aim of this study was to determine antibiotic resistance pattern and serotypes distribution of Streptococcus pneumoniae strains isolated from clinical specimens. MATERIAL AND METHODS A total of fifty Streptococcus pneumoniae strains were...
background: acute infectious diarrhea is one of the most important causes of morbidity and mortality worldwide. objectives: the objective of this study was to characterize antimicrobial resistant diarrheagenic escherichia coli strains isolated from diarrheic children in tehran, ir iran. patients and methods: in total, 550 stool samples from diarrheic pediatric patients, aged less than 60 months...
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