Πλοήγηση ανά Συγγραφέα "Ntokou, E."
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Activity of Oxacillin versus That of Vancomycin against Oxacillin-Susceptible mecA-Positive Staphylococcus aureus Clinical Isolates Evaluated by Population Analyses, Time-Kill Assays, and a Murine Thigh Infection Model
Labrou, M.; Michail, G.; Ntokou, E.; Pittaras, T. E.; Pournaras, S.; Tsakris, A. (2012)We compared the activity of dicloxacillin with that of vancomycin against 15 oxacillin-susceptible, methicillin-resistant Staphylococcus aureus (OS-MRSA) clinical isolates. By population analyses, we found that 6 OS-MRSA ... -
Differences in biofilm formation and virulence factors between clinical and fecal enterococcal isolates of human and animal origin
Tsikrikonis, G.; Maniatis, A. N.; Labrou, M.; Ntokou, E.; Michail, G.; Daponte, A.; Stathopoulos, C.; Tsakris, A.; Pournaras, S. (2012)The present study investigated the possible correlation between carriage of the virulence genes esp and fsrb, production of hemolysin and gelatinase and biofilm formation in human vs. animal enterococcal isolates. A ... -
Genetic response of Salmonella enterica serotype Enteritidis to thioridazine rendering the organism resistant to the agent
Spengler, G.; Rodrigues, L.; Martins, A.; Martins, M.; McCusker, M.; Cerca, P.; Machado, L.; Costa, S. S.; Ntokou, E.; Couto, I.; Viveiros, M.; Fanning, S.; Molnar, J.; Amaral, L. (2012)Thioridazine (TZ)-induced accumulation of the universal efflux pump substrate ethidium bromide and its subsequent efflux by Salmonella strains with various degrees of overexpressed efflux pumps takes place automatically ... -
Hidden VIM-1 metallo-beta-lactamase phenotypes among Acinetobacter baumannii clinical isolates
Ikonornidis, A.; Ntokou, E.; Maniatis, A. N.; Tsakris, A.; Pournaras, S. (2008)A total of 87 Acinetobacter baumannii nonrepetitive consecutive clinical isolates were tested for the presence of metallo-beta-lactamases (MBLs). Results of phenotypic assays (MBL Etest, imipenem/imipenem-EDTA combined-disk ... -
Identification of the plasmid-encoded qacA efflux pump gene in meticillin-resistant Staphylococcus aureus (MRSA) strain HPV107, a representative of the MRSA Iberian clone
Costa, S. S.; Ntokou, E.; Martins, A.; Viveiros, M.; Pournaras, S.; Couto, I.; Amaral, L. (2010)Meticillin-resistant Staphylococcus aureus (MRSA) is a major nosocomial bacterium for which prevention and control measures consist mainly of the application of biocides with antiseptic and disinfectant activity. In this ... -
Intensive care unit dissemination of multiple clones of linezolid-resistant Enterococcus faecalis and Enterococcus faecium
Ntokou, E.; Stathopoulos, C.; Kristo, I.; Dimitroulia, E.; Labrou, M.; Vasdeki, A.; Makris, D.; Zakynthinos, E.; Tsakris, A.; Pournaras, S. (2012)Outbreaks caused by linezolid-resistant (LR) enterococci remain rare. We report the epidemiological and molecular characteristics of the multiclonal dissemination of LR enterococci in the intensive care unit (ICU) of a ... -
Linezolid Dependence in Staphylococcus epidermidis Bloodstream Isolates
Pournaras, S.; Ntokou, E.; Zarkotou, O.; Ranellou, K.; Themeli-Digalaki, K.; Stathopoulos, C.; Tsakris, A. (2013)We document linezolid dependence among 5 highly linezolid-resistant (LRSE) Staphylococcus epidermidis bloodstream isolates that grew substantially faster at 32 mu g/mL linezolid presence. These isolates carried the mutations ... -
Macrolide resistance determinants among Streptococcus pneumoniae isolates from carriers in Central Greece
Grivea, I. N.; Sourla, A.; Ntokou, E.; Chryssanthopoulou, D. C.; Tsantouli, A. G.; Syrogiannopoulos, G. A. (2012)Background: We sought to characterize the temporal trends in nasopharyngeal carriage of macrolide-resistant pneumococci during a period with increased heptavalent pneumococcal conjugate vaccine (PCV7) coverage in Central ... -
Wide dissemination of linezolid-resistant Staphylococcus epidermidis in Greece is associated with a linezolid-dependent ST22 clone
Karavasilis, V.; Zarkotou, O.; Panopoulou, M.; Kachrimanidou, M.; Themeli-Digalaki, K.; Stylianakis, A.; Gennimata, V.; Ntokou, E.; Stathopoulos, C.; Tsakris, A.; Pournaras, S.; Greek Study Grp Staphylococcal, Lin (2015)Objectives: Dependence on linezolid was recently described as significant growth acceleration of linezolid-resistant Staphylococcus epidermidis (LRSE) isolates upon linezolid exposure. We investigated the possible contribution ...