conclusions ctx-m was the most prevalent esbl genotype in uropathogenic e. coli (upec) isolated from uti. in addition, a high frequency of qnr genes among esbl-producing e. coli was identified in this study. in order to avoid treatment failures, we recommend using phenotypic and molecular methods to diagnose these enzymes and qnr genes. results the highest sensitivity was seen to imipenem (96.7...

infectious diseases are one of the most common causes of morbidity and mortality and the spread of resistant microorganisms is playing a significant role in this regard. the purpose of this study was to assess the trend in antimicrobial resistance of gram-positive bacteria at the main referral teaching hospital in tehran during a 4-year period. all patients' biological isolates such as blood, u...

background: acinetobacter baumannii is an opportunistic and gram-negative coccobacillus. this opportunistic pathogen infectivity, especially in the intensive care units of hospitals is extensive worldwide. due to the incremental pattern of antibiotic resistance, this study was carried out to track the class i, ii and iii integrons in acinetobacter baumannii isolated from hospitalized cases in m...

objective(s):helicobacter pylori (h. pylori) is a pathogenic bacterium that colonizes the stomachs of approximately 50% of the world’s population. resistance of h. pylori to antibiotics is considered as the main reason for the failure to eradicate this bacterium. the aim of this study was to determine the rate of resistant h. pylori strains to various antimicrobial agents in different areas of ...

background and objectives: the prevalence of vibrio parahaemolyticus has been reported from ponnani earlier, however incidence of multidrug resistant strains have been encountered recently in clinical laboratories. the source for such strains and their presence in this major fish landing centre has been investigated. materials and methods: antibiotic sensitivity tests on isolates of v. parahaem...

background urinary tract infection (uti) is a common problem in infants and children, as well as adults. objectives the aim of this study was to assess the most common bacterial uropathogens, their susceptibility, and resistance to antibiotics in children with uti. materials and methods this study included 7,365 urine samples sent from various departments to the kars state hospital microbiology...

A total of 1,500 recent throat isolates of Streptococcus pyogenes collected between 1996 and 1999 from children throughout France were tested for their susceptibility to erythromycin, azithromycin, josamycin, clindamycin, and streptogramin B. The erythromycin-resistant isolates were further studied for their genetic mechanism of resistance, by means of PCR. The clonality of these strains was al...

Ribotyping, a method of genotyping bacterial isolates for epidemiologic study, uses rRNA as a probe to detect chromosomal restriction fragment length polymorphisms. Although ribotyping is accurate, its utility is limited by the labor and time necessary for Southern blot analysis. PCR-ribotyping uses PCR to amplify the 16S-23S intergenic spacer region of the bacterial rRNA operon. Length heterog...