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CTX-M-type beta-lactamases: an emerging group of extended-spectrum enzymes.
Tzouvelekis LS, Tzelepi E, Tassios PT, Legakis NJ. Tzouvelekis LS, et al. Int J Antimicrob Agents. 2000 Mar;14(2):137-42. doi: 10.1016/s0924-8579(99)00165-x. Int J Antimicrob Agents. 2000. PMID: 10720804
Imipenem resistance in Enterobacter aerogenes is associated with derepression of chromosomal cephalosporinases and impaired permeability.
Tzouvelekis LS, Tzelepi E, Mentis AF, Vatopoulos AC, Tsakris A. Tzouvelekis LS, et al. FEMS Microbiol Lett. 1992 Aug 15;74(2-3):195-9. doi: 10.1016/0378-1097(92)90428-q. FEMS Microbiol Lett. 1992. PMID: 1526451
High prevalence of stably derepressed class-I beta-lactamase expression in multiresistant clinical isolates of Enterobacter cloacae from Greek hospitals.
Tzelepi E, Tzouvelekis LS, Vatopoulos AC, Mentis AF, Tsakris A, Legakis NJ. Tzelepi E, et al. J Med Microbiol. 1992 Aug;37(2):91-5. doi: 10.1099/00222615-37-2-91. J Med Microbiol. 1992. PMID: 1629903
These data indicate that the extremely high prevalence of Ctx-Caz-resistant E. cloacae isolates in Greek hospitals is attributed to the dissemination of mutants which constitutively overproduce the class-I chromosomal beta-lactamase. ...
These data indicate that the extremely high prevalence of Ctx-Caz-resistant E. cloacae isolates in Greek hospitals is attributed to t …
Serological classification in relation to auxotypes, plasmid contents, and susceptibilities to antimicrobials of PPNG and non-PPNG strains isolated in Greece.
Tzanakaki G, Mavrommati L, Tzelepi E, Kolyva S, Fragouli E. Tzanakaki G, et al. Genitourin Med. 1989 Jun;65(3):171-6. doi: 10.1136/sti.65.3.171. Genitourin Med. 1989. PMID: 2503435 Free PMC article.
Antibiotic resistance, plasmid content and auxotypes of Neisseria gonorrhoeae in Greece.
Mavrommati L, Tzelepi E, Sima A, Tzanakaki G, Kokla A, Flemetakis A. Mavrommati L, et al. J Antimicrob Chemother. 1988 May;21(5):571-9. doi: 10.1093/jac/21.5.571. J Antimicrob Chemother. 1988. PMID: 3134319
Dissemination of cephalosporin-resistant Serratia marcescens strains producing a plasmidic SHV type beta-lactamase in Greek hospitals.
Gianneli D, Tzelepi E, Tzouvelekis LS, Mentis AF, Nikolopoulou C. Gianneli D, et al. Eur J Clin Microbiol Infect Dis. 1994 Sep;13(9):764-7. doi: 10.1007/BF02276063. Eur J Clin Microbiol Infect Dis. 1994. PMID: 7843183
Consecutive mutations leading to the emergence in vivo of imipenem resistance in a clinical strain of Enterobacter aerogenes.
Tzouvelekis LS, Tzelepi E, Kaufmann ME, Mentis AF. Tzouvelekis LS, et al. J Med Microbiol. 1994 Jun;40(6):403-7. doi: 10.1099/00222615-40-6-403. J Med Microbiol. 1994. PMID: 8006932
During this course of treatment, a strain of E. aerogenes was isolated that was resistant to virtually all beta-lactam agents including imipenem. ...It was concluded that stable derepression of class-I beta-lactamase production and reduced permeability are both required fo …
During this course of treatment, a strain of E. aerogenes was isolated that was resistant to virtually all beta-lactam agents includi …
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