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First description of Klebsiella pneumoniae harboring CTX-M beta-lactamases (CTX-M-14 and CTX-M-3) in Taiwan.


ABSTRACT: Klebsiella pneumoniae isolates from Taiwan medical centers (50 strains; 1998 to 2000) with a CTX-M resistance phenotype (ceftazidime susceptible and ceftriaxone or cefotaxime nonsusceptible) were selected for initial isoelectric focusing analysis. beta-Lactamases with pIs of 7.9 (n = 22) and 8.4 (n = 28) in addition to 5.4 and/or 7.6 were detected. DNA gene sequencing identified the beta-lactamases with pIs of 7.9 and 8.4 as CTX-M-14 and CTX-M-3, respectively. Molecular typing suggested inter- and intrahospital clonal dissemination of these Taiwanese CTX-M-producing Klebsiella strains.

SUBMITTER: Yu WL 

PROVIDER: S-EPMC127095 | biostudies-literature | 2002 Apr

REPOSITORIES: biostudies-literature

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First description of Klebsiella pneumoniae harboring CTX-M beta-lactamases (CTX-M-14 and CTX-M-3) in Taiwan.

Yu Wen Liang WL   Winokur Patricia L PL   Von Stein Diana L DL   Pfaller Michael A MA   Wang Jen Hsien JH   Jones Ronald N RN  

Antimicrobial agents and chemotherapy 20020401 4


Klebsiella pneumoniae isolates from Taiwan medical centers (50 strains; 1998 to 2000) with a CTX-M resistance phenotype (ceftazidime susceptible and ceftriaxone or cefotaxime nonsusceptible) were selected for initial isoelectric focusing analysis. beta-Lactamases with pIs of 7.9 (n = 22) and 8.4 (n = 28) in addition to 5.4 and/or 7.6 were detected. DNA gene sequencing identified the beta-lactamases with pIs of 7.9 and 8.4 as CTX-M-14 and CTX-M-3, respectively. Molecular typing suggested inter- a  ...[more]

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