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Extended-spectrum beta-lactamases in Klebsiella pneumoniae bloodstream isolates from seven countries: dominance and widespread prevalence of SHV- and CTX-M-type beta-lactamases.
- Source :
-
Antimicrobial agents and chemotherapy [Antimicrob Agents Chemother] 2003 Nov; Vol. 47 (11), pp. 3554-60. - Publication Year :
- 2003
-
Abstract
- A huge variety of extended-spectrum beta-lactamases (ESBLs) have been detected during the last 20 years. The majority of these have been of the TEM or SHV lineage. We have assessed ESBLs occurring among a collection of 455 bloodstream isolates of Klebsiella pneumoniae, collected from 12 hospitals in seven countries. Multiple beta-lactamases were produced by isolates with phenotypic evidence of ESBL production (mean of 2.7 beta-lactamases per isolate; range, 1 to 5). SHV-type ESBLs were the most common ESBL, occurring in 67.1% (49 of 73) of isolates with phenotypic evidence of ESBL production. In contrast, TEM-type ESBLs (TEM-10 type, -12 type, -26 type, and -63 type) were found in just 16.4% (12 of 73) of isolates. The finding of TEM-10 type and TEM-12 type represents the first detection of a TEM-type ESBL in South America. PER (for Pseudomonas extended resistance)-type beta-lactamases were detected in five of the nine isolates from Turkey and were found with SHV-2-type and SHV-5-type ESBLs in two of the isolates. CTX-M-type ESBLs (bla(CTX-M-2) type and bla(CTX-M-3) type) were found in 23.3% (17 of 73) of isolates and were found in all study countries except for the United States. We also detected CTX-M-type ESBLs in four countries where they have previously not been described-Australia, Belgium, Turkey, and South Africa. The widespread emergence and proliferation of CTX-M-type ESBLs is particularly noteworthy and may have important implications for clinical microbiology laboratories and for physicians treating patients with serious K. pneumoniae infections.
- Subjects :
- Bacterial Proteins genetics
DNA-Binding Proteins genetics
Enzyme-Linked Immunosorbent Assay
Isoelectric Focusing
Molecular Epidemiology
Prospective Studies
Reverse Transcriptase Polymerase Chain Reaction
Klebsiella Infections epidemiology
Klebsiella Infections microbiology
Klebsiella pneumoniae enzymology
beta-Lactamases metabolism
Subjects
Details
- Language :
- English
- ISSN :
- 0066-4804
- Volume :
- 47
- Issue :
- 11
- Database :
- MEDLINE
- Journal :
- Antimicrobial agents and chemotherapy
- Publication Type :
- Academic Journal
- Accession number :
- 14576117
- Full Text :
- https://doi.org/10.1128/AAC.47.11.3554-3560.2003