conclusions biofilm formation (both strong and weak) strongly correlated with psla gene carriage. biofilm formation also correlated with mbl and ampc β-lactamase production. more importantly, multiple-β-lactamase phenotype was associated with formation of strong biofilms. results biofilm formation was observed in 43.5% of the isolates, of which 66.7% produced strong and 33.3% formed weak biofil...

Transformation of E. coli cells treated with CaCl(2) to multiple antibiotic resistance by purified R-factor DNA is reported. Drug resistance is expressed in a small fraction of the recipient bacterial population almost immediately after uptake of DNA, but full genetic expression of resistance requires subsequent incubation in drugfree medium before antibiotic challenge. Transformed bacteria acq...

Microorganisms are responsible for multiple antibiotic resistances that have been associated with resistance/tolerance to heavy metals, with consequences to public health. Many genes conferring these resistances are located on mobile genetic elements, easily exchanged among phylogenetically distant bacteria. The objective of the present work was to isolate arsenic-, antimonite-, and antibiotic-...

Background: Vibrio parahaemolyticus is one of the most common causes of seafood-borne illnesses in Korea, either directly or indirectly, by consuming infected seafood. Many studies have demonstrated the antibiotic susceptibility profile of V. parahaemolyticus. This strain has developed multiple antibiotic resistance, which has raised serious public health and economic concerns. This article rev...

conclusions based on our findings, p. aerugionsa is a major causative agent of wound infections and amikacin could be considered as a more effective antibiotic for treatment of the burned patients. background nowadays, the treatment of burned patients is difficult because of the high frequency of infection with antibiotic resistance bacteria. objectives this study was conducted to evaluate the ...

Although recent molecular techniques have greatly expanded our knowledge of microbial biogeography, the functional biogeography of soil microorganisms remains poorly understood. In this work, we explore geographic variation in Streptomyces phenotypes that are critical to species interactions. Specifically, we characterize Streptomyces from different locations from multiple continents for antibi...

Multiple antibiotic resistance in Escherichia coli can be mediated by induction of the SoxS or MarA protein, triggered by oxygen radicals (in the soxRS regulon) or certain antibiotics (in the marRAB regulon), respectively. These small proteins (SoxS, 107 residues; MarA, 127 residues) are homologous to the C terminus of the XylS-AraC family of proteins and are more closely related to a approxima...

development of antibiotic resistance in intensive care units (icus) is a worldwide problem. the purpose of this study was to evaluate the effect of an antibiotic stewardship program (asp) by carbapenems restriction on gram-negative antimicrobial resistance in icu. the study was designed in a 21 bedded general icu of a teaching hospital with two wings (one and two) in tehran, iran. carbapenem pr...

salmonella is one of the most important zoonotic pathogens with many virulence factors playing a major role in its pathogenesis. the aims of this study were to detect spva, int2 and invc virulence genes of different salmonella serotypes isolated from various clinical animal and human sources, and to investigate antibiotic resistance patterns among these serotypes. using a pcr assay, a total of ...

background: multidrug resistance in salmonella enteritidis isolates is a public health problem worldwide; the present study, therefore, was designed for antimicrobial-resistance determination in this strain. methods: salmonella strains isolated from poultry samples by biochemical positive and negative tests were subjected to pcr and identified as salmonella enteritidis. for detection and identi...