Mobile genetic elements (MGEs) such as plasmids or integrative conjugative (ICEs) are widely involved in the horizontal transfer of antibiotic resistant genes (ARGs), but their environmental host-range and reservoirs remain poorly known, mainly assessed through analysis culturable clinical bacterial isolates. In this study, we used a gradual approach for determining abundance ICEs belonging to ...

In previous works we have developed a method to convert solar X-ray data, collected with the Yohkoh/SXT, into templates of stellar coronal observations. Here we apply the method to several solar flares, for comparison with stellar X-ray flares. Eight flares, from weak (GOES class C5.8) to very intense ones (X9) are selected as representative of the flaring Sun. The emission measure distribution...

OBJECTIVE Urinary tract infections (UTIs) are among the most frequently seen community-acquired infections worldwide. E. coli causes 90% of urinary system infections. To guide the empirical therapy, the resistance pattern of E. coli responsible for community-acquired UTI was evaluated throughout a seven-year period in this study. MATERIAL AND METHODS The urine cultures of patients with urinar...

Problem statement: Escherichia coli isolates are the most common bacterial agents of salpingitis in commercial layer hens. The objectives of this study were to determine the phylogenetic groups/subgroups and antibiotic resistance of E. coli isolates from salpingitis cases in commercial layer hens farms in southeast of Iran. Approach: One hundred twenty one E. coli isolates from oviducts of laye...

The alternative transcription factor σ(B) is responsible for transcription in Staphylococcus aureus during the stress response. Many virulence-associated genes are directly or indirectly regulated by σ(B). We hypothesized that treatment with antibiotics may act as an environmental stressor that induces σ(B) activity in antibiotic-resistant strains. Several antibiotics with distinct modes of act...

BACKGROUND The proportion of older people among the general population has risen. Staphylococcus aureus (SA) constitutes a significant problem. Underlying disease and functional debility, predispose the older adult to staphylococcal carriage and infection, specially bloodstream infection and pneumonia. METHODS This is a retrospective cohort study of older patients with SA infections. We analy...

OBJECTIVES To characterize the vectors involved in the dissemination of bla(CMY-2) genes in clinical isolates of Proteus mirabilis collected between 1999 and 2007. METHODS Plasmid analysis of 19 P. mirabilis carrying ampC genes was performed by PCR-based replicon typing, S1-PFGE and Southern hybridization with ampC and replicon probes. Isolates that could not be characterized were examined fo...

A group of marine dinoflagellates (Alveolata, Eukaryota), consisting of ∼10 species of the genus Alexandrium, Gymnodinium catenatum and Pyrodinium bahamense, produce the toxin saxitoxin and its analogues (STX), which can accumulate in shellfish, leading to ecosystem and human health impacts. The genes, sxt, putatively involved in STX biosynthesis, have recently been identified, however, the evo...

Introduction and objective: Proteus bacilli are opportunistic members of Enterobacteriaceae and Proteus mirabilis is among the most common causes of community or hospital acquired urinary tract infections (UTI) in many countries. In the present study hemolysin production, salt tolerance and resistance to antibacterial agents in environmental and UTIs samples were compared. Materials and methods...

M []The faint neutron star soft X–ray transient SAX J1810.8–2609 in quiescence [P.G. Jonker et al.] P.G. Jonkeremail : [email protected], R. Wijnands, M. van der Klis document abstract We present the analysis of a 35 ksec long Chandra observation of the neutron star soft X–ray transient (SXT) SAX J1810.8–2609. We detect three sources in the field of view. The position of one of them is consi...