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Heteroresistance to carbapenems in Acinetobacter baumannii.
Pournaras S, Ikonomidis A, Markogiannakis A, Maniatis AN, Tsakris A. Pournaras S, et al. J Antimicrob Chemother. 2005 Jun;55(6):1055-6. doi: 10.1093/jac/dki115. Epub 2005 Apr 11. J Antimicrob Chemother. 2005. PMID: 15824088 No abstract available.
Discordance of meropenem versus imipenem activity against Acinetobacter baumannii.
Ikonomidis A, Pournaras S, Maniatis AN, Legakis NJ, Tsakris A. Ikonomidis A, et al. Int J Antimicrob Agents. 2006 Oct;28(4):376-7. doi: 10.1016/j.ijantimicag.2006.07.007. Epub 2006 Sep 1. Int J Antimicrob Agents. 2006. PMID: 16949256 No abstract available.
Carriage of OXA-58 but not of OXA-51 beta-lactamase gene correlates with carbapenem resistance in Acinetobacter baumannii.
Tsakris A, Ikonomidis A, Pournaras S, Spanakis N, Markogiannakis A. Tsakris A, et al. J Antimicrob Chemother. 2006 Nov;58(5):1097-9. doi: 10.1093/jac/dkl365. Epub 2006 Sep 22. J Antimicrob Chemother. 2006. PMID: 16997843 No abstract available.
Piperacillin/tazobactam-heteroresistant Pseudomonas aeruginosa from urinary infection, successfully treated by piperacillin/tazobactam.
Pournaras S, Ikonomidis A, Neou E, Kantzanou M, Maniatis AN, Tsakris A. Pournaras S, et al. J Antimicrob Chemother. 2008 Mar;61(3):757-8. doi: 10.1093/jac/dkm528. Epub 2008 Jan 15. J Antimicrob Chemother. 2008. PMID: 18199562 No abstract available.
Emergence of the plasmid-mediated quinolone resistance gene qnrS1 in Escherichia coli isolates in Greece.
Vasilaki O, Ntokou E, Ikonomidis A, Sofianou D, Frantzidou F, Alexiou-Daniel S, Maniatis AN, Pournaras S. Vasilaki O, et al. Antimicrob Agents Chemother. 2008 Aug;52(8):2996-7. doi: 10.1128/AAC.00325-08. Epub 2008 May 19. Antimicrob Agents Chemother. 2008. PMID: 18490503 Free PMC article. No abstract available.
First occurrence of an Escherichia coli clinical isolate producing the VIM-1/VIM-2 hybrid metallo-beta-lactamase VIM-12.
Ikonomidis A, Labrou M, Afkou Z, Maniatis AN, Sofianou D, Tsakris A, Pournaras S. Ikonomidis A, et al. Antimicrob Agents Chemother. 2007 Aug;51(8):3038-9. doi: 10.1128/AAC.00374-07. Epub 2007 May 21. Antimicrob Agents Chemother. 2007. PMID: 17517838 Free PMC article. No abstract available.
CTX-M enzymes are the most common extended-spectrum beta-lactamases among Escherichia coli in a tertiary Greek hospital.
Pournaras S, Ikonomidis A, Kristo I, Tsakris A, Maniatis AN. Pournaras S, et al. J Antimicrob Chemother. 2004 Aug;54(2):574-5. doi: 10.1093/jac/dkh323. Epub 2004 Jun 23. J Antimicrob Chemother. 2004. PMID: 15215222 No abstract available.
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. Giannouli S, et al. Among authors: ikonomidis a. J Antimicrob Chemother. 2010 Apr;65(4):626-33. doi: 10.1093/jac/dkq039. Epub 2010 Feb 14. J Antimicrob Chemother. 2010. PMID: 20156801
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. Tsakris A, et al. J Antimicrob Chemother. 2008 Dec;62(6):1257-60. doi: 10.1093/jac/dkn364. Epub 2008 Sep 4. J Antimicrob Chemother. 2008. PMID: 18772158
OBJECTIVES: To investigate the first KPC carbapenemase-producing Klebsiella pneumoniae isolate from a Greek hospital, including phenotypic methods to aid recognition of this resistance type. METHODS: A carbapenem-resistant clinical isolate of K. pneumoniae was recov …
OBJECTIVES: To investigate the first KPC carbapenemase-producing Klebsiella pneumoniae isolate from a Greek hospital, including pheno …
In vitro and in vivo evaluations of oxacillin efficiency against mecA-positive oxacillin-susceptible Staphylococcus aureus.
Ikonomidis A, Michail G, Vasdeki A, Labrou M, Karavasilis V, Stathopoulos C, Maniatis AN, Pournaras S. Ikonomidis A, et al. Antimicrob Agents Chemother. 2008 Nov;52(11):3905-8. doi: 10.1128/AAC.00653-08. Epub 2008 Aug 11. Antimicrob Agents Chemother. 2008. PMID: 18694946 Free PMC article.
All four isolates exhibited significant reductions in the numbers of colonies grown after dicloxacillin treatment of experimental thigh infections, as also did a mecA-negative S. aureus control strain. ...
All four isolates exhibited significant reductions in the numbers of colonies grown after dicloxacillin treatment of experimental thigh infe …
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