نتایج جستجو برای: e coli o157h7 and s enterica
تعداد نتایج: 17447206 فیلتر نتایج به سال:
A florfenicol resistance gene almost identical to floR of Salmonella enterica serovar Typhimurium DT104 was detected on 110- to 125-kb plasmids in Escherichia coli isolates of animal origin. Analysis of the floR gene flanking regions of one of the plasmids showed that they were different from those encountered in S. enterica serovar Typhimurium DT104.
Escherichia coli K12 is a commensal bacteria and one of the best-studied model organisms. Salmonella enterica serovar Typhimurium, on the other hand, is a facultative intracellular pathogen. These two prokaryotic species can be considered related phylogenetically, and they share a large amount of their genetic material, which is commonly termed the "core genome." Despite their shared core genom...
The soxRS regulon of Escherichia coli and Salmonella enterica is induced by redox-cycling compounds or nitric oxide and provides resistance to superoxide-generating agents, macrophage-generated nitric oxide, antibiotics, and organic solvents. We have previously shown that constitutive expression of soxRS can contribute to quinolone resistance in clinically relevant S. enterica. In this work, we...
conclusions: with respect to the obtained results and regarding to the daily increase of the resistant microbial strains to the commercial antibiotics, it can be concluded that these extracts can be proper candidates of antibacterial substance against pathogenic bacterial species especially s. aureus, e. coli, k. pneumoniae and s. epidermidis. results: the extract of c. fistula was effective ag...
Salmonella species utilize type III secretion systems (T3SSs) to translocate effectors into the cytosol of mammalian host cells, subverting cell signaling and facilitating the onset of gastroenteritis. In this study, we compared a draft genome assembly of Salmonella enterica subsp. salamae strain 3588/07 against the genomes of S. enterica subsp. enterica serovar Typhimurium strain LT2 and Salmo...
Introduction: Organic antibacterial materials have been used as insecticides and bactericides for many years. Unfortunately, high temperatures in manufacturing process reduce their antibacterial properties. However, inorganic materials of antibacterial agents have excellent bacterial resistance and thermal stability. Over the past few decades, inorganic nanoparticles whose structures exhibit si...
Dried unripe raspberries (Rubus chingii), a kind of Chinese herbal medicine, have been used for many years in China. They were prepared as unpurified raspberry extract (URE) by ethanol extraction, and purified (PRE) macroporous resin. Synergistic effects between the URE (or PRE) ampicillin, erythromycin, tetracycline or streptomycin against Escherichia coli, Staphylococcus aureus Salmonella ent...
Some wild-type lines of Salmonella spp. contain plasmids which are self-transmissible by conjugation (25). However, most such plasmids have very low frequencies of self-transmission owing to repression of transfer functions; this situation has been extensively analyzed by Datta et al. (6). In addition, most plasmids give infrequent chromosome mobilization because of the low frequency of plasmid...
The sensitivity of bacteria to the bactericidal activity of serum depends on the structure and organization of the bacterial outer membrane. Sialic acid has been found in the O-specific region of bacterial lipopolysaccharide (LPS) and it plays an essential role in protecting Gram-negative bacteria against the bactericidal activity of human and animal serum. The susceptibility of Gram-negative b...
1114 isolate 4 as donor, transconjugants were selected on MacConkey agar with 2 mg/L cefotaxime and 50 mg/L nalidixic acid. Both types of bla CTX-M-14-carrying plasmids proved to be conjugative (Figure 1a) and harboured the bla CTX-M-14 gene on an EcoRI-fragment of ∼18 kb. All three S. Enteritidis isolates showed closely related XbaI-PFGE-patterns, determined as previously described. 2 The only...
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