P. aeruginosa has been mentioned as the major causative agents of nosocomial infections. Pseudomonas infections are often serious and show different resistance to treatment due to distribution of antimicrobial resistance. Meanwhile, some strains are also able to form biofilm during contamination, which help bacteria to be even more persisyant to yreatment. We examined the antibiotic resistance ...

Objective: Although quinolone resistance results mostly from chromosomal mutations in Klebsiella pneumoniae, it may also be mediated by plasmid – encoded qnr determinants. Plasmid-mediated quinolone resistance (PMQR) was increasingly identified in Enterobacteriaceae family worldwide. The aim of this study was to investigate the prevalence of qnr genes in clinical isolates of Klebsiella pn...

Dematiaceous fungi are darkly pigmented, filamentary moulds and are common in the environment as plant saprophytes and pathogens. Incidental reports of corneal ulcers that have been caused by species of this group have appeared in the literature, but the relative importance of this species as potential comeal pathogens has not been appreciated. As a group, second to Fusarium solani and other mo...

Objective(s): The nosocomial infections by Aspergillus species are associated with constructions and increased dust loads in hospital indoors. Our main object was to find the environmental sources of Aspergillus species causing hospital acquired infections. Materials and Methods: The clinical and environmental samplings were performed during 18 months from spring 2010 to summer 2011 in Imam ed...

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...

backgrounds: to obtain information about clinical isolates of aspergillus flavus group. methods: we examined 55 isolates [45 clinical, 10 reference (6 from culture collections, 4 local reference)] for toxicology, growth rates, and morphological and physiological characteristics. modified czapek agar (cz) and malt extract agar (mea) were used for observing microscopic morphology and measuring fu...

background: re-emergence of pertussis has been reported in iran despite a high rate of vaccination coverage. low efficacy of the vaccine might be due to the genetic divergence between clinical versus vaccine strains. in the current study, the genetic profiles of clinical isolates and vaccine strains of bordetella pertussis (b. pertussis) were assessed by using pulsed field gel electrophoresis (...