background : medicinal use of plants dates long back in the history of the human beings and has recently gained a great deal of importance in treating different diseases. due to the importance of pseudomonas aeroginosa strains as agents responsible for common secondary infections and their resistance to antibiotics and disinfectants, the present study aimed at investigating the antimicrobial ef...

Recently, the rapid emergence of antibiotic-resistant pathogens has caused a serious health problem. Scientists respond to the threat by developing new antimicrobial materials to prevent or control infections caused by these pathogens. Polymer-based nanocomposite hydrogels are versatile materials as an alternative to conventional antimicrobial agents. Cross-linking of polymeric materials by met...

Not all heavy metals are toxic. Some at lower concentrations are essential to the physiological status of the organism. Under certain conditions, induced toxicity occurs when the heavy metals are in the form of cations which tends to bind to certain biomolecules, thus becoming toxic to organisms. In many industries, toxic heavy metals such as As, Cd, Cr, Cu, Hg, Pb and Zn, are released mainly i...

Objectives: Investigation of the resistance to high level aminoglycoside (HLA), and heavy metals; lead (Pb 2+ ), cadmium (Cd 2+ ), mercury ( Hg 2+ ), arsenic (As 5+ ), in 39 Enterococcus strains isolated from stool and rectal swabs of hospitalized patients. Eleven out of 39 strains were resistant to vancomycin (Van) and teicoplanin (Tec) (VRE), nine of them were resistant to Van and 19 of them ...

background: soil serves as a major reservoir for contaminants as it can bind to various chemicals. the aim of this study was to evaluate the levels of some metals (cd, cu, fe and v) in soil samples collected from different stations of ahvaz industrial complex ii to determine the natural and anthropogenic contribution of metal in the soil. methods: this was an experimental study that carried out...

conclusions the present study showed that bla oxa-23-like was the most frequent carbapenemase identified among carbapenem-resistant a. baumannii isolated in tehran hospitals. evaluation of antibiotic resistance genes in a. baumannii, is necessary to control further dissemination of these antibiotic resistant genes. results results showed that 123 of 131 (93.89%) acinetobacter species, possessed...

BACKGROUND Pollution due to the heavy metals is a problem that may have negative consequences on the hydrosphere. One of the best procedures in removing the toxic metals from the environment is using metal resistant bacteria. RESULTS In the present study eight nickel resistant bacteria were isolated from industrial wastewaters. Three of them were selected as the most resistant based on their ...

Background: Multidrug resistant Enterobacteriaceae which was confined to the hospital environments is now emerging in the domestic food related environments as well. The main objective of the present study was to investigate the prevalence of antibiotic resistant Enterobacteriaceae in the domestic food related environments.  Methods: Resistance to ampicillin, chloramphenicol, ...

The term “nanoparticles” refers to very tiny particles, much smaller than cancer cells or even standard chemotherapy drugs. A nanoparticle ranges between 1 and 100 nanometers (a metric unit of length equal to one billionth of a meter) in diameter. Nanoparticles have industrial uses in creating surface coatings for scratch-resistant glass, skid-resistant roads, in strengthening metals, and in th...