نتایج جستجو برای: resistant isolates
تعداد نتایج: 259892 فیلتر نتایج به سال:
Background: Because most bacteria responsible for hospital infections are resistant to common antibiotics, the tendency to produce effective and nontoxic anti-microbial drugs have increased. Therefore, it is attempted to substitute antibiotics with natural products, such as nanoparticles and plant extracts. The aim of this study was to investigate the synergistic antibacterial effects of silver...
Background and Aim: Klebsiella pneumoniae is a member of the Enterobacteriaceae family. There is a global emergence of multidrug-resistant (MDR) strains of K. pneumoniae, a Gram-negative enteric bacterium that causes nosocomial and urinary tract infections. The aims of the present study were to identify the Klebsiella pneumoniae infections in hospitalized patients, characterization of blaCTX ge...
The food supply, including poultry products, may transmit antimicrobial drug-resistant Escherichia coli to humans. To assess this hypothesis, 931 geographically and temporally matched E. coli isolates from human volunteers (hospital inpatients and healthy vegetarians) and commercial poultry products (conventionally raised or raised without antimicrobial drugs) were tested by PCR for phylogeneti...
objectives: the purpose of this study was to assay the antifungal activity of selected essential oils obtained from plants against both fluconazole (flu)-resistant and flu-susceptible c. albicans strains isolated from hiv positive patients with oropharyngeal candidiasis (opc). materials and methods: the essential oils were obtained by hydrodistillation method from myrtus communis (my. communis)...
Background and Aims: Candida albicans as an opportunistic fungal pathogen in human is the cause of volvovaginitis candidiasis. Azole resistance is cinsiderable as worldwide problem in treatment of candidiasis. Azole resistance can occur through different mechanisms such as mutation in ERG11 gene. The aim of our study was evaluation of ERG11 gene mutations in fluconazole resistant islotes of C. ...
Background and purpose: Aminoglycosides are broad-spectrum antibiotics that are often used in combination with other antibiotics for the treatment of severe S. aureus infections. This research aimed at investigating the phenotypic and genotypic evaluation of aminoglycoside resistance in clinical isolates of MRSA in Kerman, Iran. Materials and methods: During a one...
Background and Objective: AmpC-type beta-lactamases have been implicated in group C of Amber, which includes EBC, CIT, MOX, FOX, DHA, and ACC. The active presence of these plasmid genes in clinical isolates of P.aeruginosa has resulted in resistance to a wide range of antibiotics. Therefore, we aimed to determine the minimum inhibitory concentrations (MIC) of different antibiotic groups in clin...
background and objectives: macrolide, lincosamide and streptogramin type b (mlsb) antibiotics are important in the treatment of staphylococcus aureus infections and existence of isolates with ability to resist against mlsb antibiotics is worrisome. materials and methods: in this cross sectional study, 101 s. aureus isolates were collected from patients of five selected hospitals in tehran over ...
Background and Purpose: Oropharyngeal candidiasis (OPC) and antifungal drug resistance are major health concerns in patients with human immunodeficiency virus (HIV). The increased reports of antifungal resistance and expanding drug therapy options prompted the determination of antifungal susceptibility profile. The present study was performed to determine the antifungal susceptibility of Candid...
Global-scale data on the Oligocene to Recent planktic foraminifers and coccoliths from the tropical Pacific and Atlantic Oceans are employed for quantitative testing of alternative models (Red Queen and Stationary Hypotheses) of the relationship between speciation rates, extinction rates, taxonomic diversity, abiotic events, and history of the paleosystem. The results demonstrate that although ...
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