Πλοήγηση ανά Συγγραφέα "Tsakris, A."
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CTX-M-type β-lactamases affect community Escherichia coli treatment, Greece [1]
Pournaras, S.; Ikonomidis, A.; Sofianou, D.; Tsakris, A.; Maniatis, A. N. (2004) -
Detection of a novel variant bla(CTX-M-3) extended spectrum beta-lactamase gene in a community-acquired Escherichia coli isolate
Pournaras, S.; Tsakris, A.; Ikonomidis, A.; Markogiannakis, A.; Kristo, I.; Maniatis, A. N. (2006)A highly cefotaxime- and cefepime-resistant but ceftazidime-sensitive Escherichia coli isolate was recovered from a community-acquired urinary infection of a Greek patient. Susceptibility testing, transfer assays, plasmid ... -
Detection of a phylogenetically distinct IMP-type metallo-beta-lactamase, IMP-35, in a CC235 Pseudomonas aeruginosa from the Dutch-German border region (Euregio)
Pournaras, S.; Kock, R.; Mossialos, D.; Mellmann, A.; Sakellaris, V.; Stathopoulos, C.; Friedrich, A. W.; Tsakris, A. (2013)To characterize a highly divergent IMP-type metallo--lactamase (MBL) variant detected in a multidrug-resistant Pseudomonas aeruginosa clinical isolate. P. aeruginosa isolate 1876 was recovered from an anal swab of an ... -
Detection of a variant CTX-M3 extended spectrum beta-lactamase gene, in a community-acquired strain of Escherichia coli
Pournaras, S.; Kristo, I.; Tsakris, A.; Maniatis, A. N. (2004) -
Detection of mutations in the FemXAB protein family in oxacillin-susceptible mecA-positive Staphylococcus aureus clinical isolates
Giannouli, S.; Labrou, M.; Kyritsis, A.; Ikonomidis, A.; Pournaras, S.; Stathopoulos, C.; Tsakris, A. (2010)Methicillin-resistant Staphylococcus aureus (MRSA) strains that express the mecA gene but are oxacillin susceptible (OS-MRSA; oxacillin MIC < 2 mg/L) are increasingly reported. To gain molecular and functional insights on ... -
Detection of the new metallo-beta-lactamase VIM-19 along with KPC-2, CMY-2 and CTX-M-15 in Klebsiella pneumoniae
Pournaras, S.; Poulou, A.; Voulgari, E.; Vrioni, G.; Kristo, I.; Tsakris, A. (2010)To report the identification of the metallo-beta-lactamase (MBL) variant VIM-19 in a Klebsiella pneumoniae clinical strain co-producing KPC-2 carbapenemase, CMY-2 cephalosporinase and CTX-M-15 extended-spectrum beta-lactamase. ... -
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 ... -
Discordance of meropenem versus imipenem activity against Acinetobacter baumannii
Ikonomidis, A.; Pournaras, S.; Maniatis, A. N.; Legakis, N. J.; Tsakris, A. (2006) -
Dissemination of Clinical Isolates of Klebsiella oxytoca Harboring CMY-31, VIM-1, and a New OXY-2-Type Variant in the Community
Tsakris, A.; Poulou, A.; Markou, F.; Pitiriga, V.; Piperaki, E. T.; Kristo, I.; Pournaras, S. (2011)The aim of the present study was to investigate the epidemiological link of multidrug-resistant Klebsiella oxytoca isolates causing community-onset infections among patients attending our outpatient department and to ... -
Dissemination of clonally unrelated erythromycin- and glycopeptide-resistant Enterococcus faecium isolates in a tertiary Greek hospital
Maniatis, A. N.; Pournaras, S.; Kanellopoulou, M.; Kontos, F.; Dimitroulia, E.; Papafrangas, E.; Tsakris, A. (2001)Between September 1999 to February 2001, 25 glycopeptide-resistant Enterococcus faecium (GRE) isolates were recovered from a Greek hospital. The isolates exhibited 13 distinct chromosomal macrorestriction types by pulsed-field ... -
Efflux system overexpression and decreased OprD contribute to the carbapenem heterogeneity in Pseudomonas aeruginosa
Ikonomidis, A.; Tsakris, A.; Kantzanou, M.; Spanakis, N.; Maniatis, A. N.; Pournaras, S. (2008)Pseudomonas aeruginosa strains exhibiting a heterogeneous mode of growth against carbapenems have been described recently. This study investigated the underlying molecular mechanisms in four genetically unrelated P. ... -
Emergence of carbapenem-resistant enterobacter cloacae carrying VIM-4 metallo-beta-lactamase and SHV-2a extended-spectrum beta-lactamase in a conjugative plasmid
Ikonomidis, A.; Spanakis, N.; Poulou, A.; Pournaras, S.; Markou, F.; Tsakris, A. (2007)Enterobacter cloacae strains are still infrequently resistant to carbapenems. A carbapenem-resistant clinical isolate of E. cloacae producing a plasmid-mediated metallo-beta-lactamase (MBL), VIM-4, was recovered from a ... -
Evaluation of Boronic Acid Disk Tests for Differentiating KPC-Possessing Klebsiella pneumoniae Isolates in the Clinical Laboratory
Tsakris, A.; Kristo, I.; Poulou, A.; Themeli-Digalaki, K.; Ikonomidis, A.; Petropoulou, D.; Pournaras, S.; Sofianou, D. (2009)The worldwide increase in the occurrence and dissemination of KPC beta-lactamases among gram-negative pathogens makes critical the early detection of these enzymes. Boronic acid disk tests using different antibiotic ... -
Evolution of multidrug-resistant Acinetobacter baumannii clonal lineages: a 10 year study in Greece (2000-09)
Gogou, V.; Pournaras, S.; Giannouli, M.; Voulgari, E.; Piperaki, E. T.; Zarrilli, R.; Tsakris, A. (2011)Objectives: To analyse the evolution and genetic relatedness of Acinetobacter baumannii clonal lineages in Greece during a 10 year period. Methods: The study included 94 randomly selected A. baumannii clinical isolates ... -
Field Application of SD Bioline Malaria Ag Pf/Pan Rapid Diagnostic Test for Malaria in Greece
Tseroni, M.; Pervanidou, D.; Tserkezou, P.; Rachiotis, G.; Pinaka, O.; Baka, A.; Georgakopoulou, T.; Vakali, A.; Dionysopoulou, M.; Terzaki, I.; Marka, A.; Detsis, M.; Evlampidou, Z.; Mpimpa, A.; Vassalou, E.; Tsiodras, S.; Tsakris, A.; Kremastinou, J.; Hadjichristodoulou, C.; Project, Malwest (2015)Greece, a malaria-free country since 1974, has experienced re-emergence of Plasmodium vivax autochthonous malaria cases in some agriculture areas over the last three years. In early 2012, an integrated control programme ... -
First occurrence of KPC-2-possessing Klebsiella pneumoniae in a Greek hospital and recommendation for detection with boronic acid disc tests
Tsakris, A.; Kristo, I.; Poulou, A.; Markou, F.; Ikonomidis, A.; Pournaras, S. (2008)To investigate the first KPC carbapenemase-producing Klebsiella pneumoniae isolate from a Greek hospital, including phenotypic methods to aid recognition of this resistance type. A carbapenem-resistant clinical isolate of ... -
Global evolution of multidrug-resistant Acinetobacter baumannii clonal lineages
Zarrilli, R.; Pournaras, S.; Giannouli, M.; Tsakris, A. (2013)The rapid expansion of Acinetobacter baumannii clinical isolates exhibiting resistance to carbapenems and most or all available antibiotics during the last decade is a worrying evolution. The apparent predominance of a few ... -
Growth Retardation, Reduced Invasiveness, and Impaired Colistin-Mediated Cell Death Associated with Colistin Resistance Development in Acinetobacter baumannii
Pournaras, S.; Poulou, A.; Dafopoulou, K.; Chabane, Y. N.; Kristo, I.; Makris, D.; Hardouin, J.; Cosette, P.; Tsakris, A.; De, E. (2014)Two colistin-susceptible/colistin-resistant (Col(s)/Col(r)) pairs of Acinetobacter baumannii strains assigned to international clone 2, which is prevalent worldwide, were sequentially recovered from two patients after ... -
Heteroresistance to carbapenems in Acinetobacter baumannii
Pournaras, S.; Ikonomidis, A.; Markogiannakis, A.; Maniatis, A. N.; Tsakris, A. (2005) -
Heteroresistance to Meropenem in Carbapenem-Susceptible Acinetobacter baumannii
Ikonomidis, A.; Neou, E.; Gogou, V.; Vrioni, G.; Tsakris, A.; Pournaras, S. (2009)The characteristics of carbapenem heteroresistance were studied in 14 apparently carbapenem-susceptible Acinetobacter baumannii isolates. The MICs for carbapenems were determined, and the isolates were genotyped by ...