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Diversity of CTX-M β-lactamases and their promoter regions from Enterobacteriaceae isolated in three Parisian hospitals
Abstract
Nine clinical isolates of Enterobacteriaceae (six Escherichia coli and three Proteus mirabilis) isolated in three Parisian hospitals between 1989 and 2000 showed a particular extended-spectrum cephalosporin-resistance profile characterized by resistance to cefotaxime and aztreonam but not to ceftazidime. CTX-M-1, CTX-M-2, CTX-M-9, CTX-M-14 and two novel plasmid-mediated CTX-M beta-lactamases (CTX-M-20, and CTX-M-21) were identified by polymerase chain reaction and isoelectric focusing (pI>8) and were associated in eight cases with TEM-1 (pI=5.4) or TEM-2 (pI=5.6) beta-lactamases. We used internal ISEcp1 and IS26 forward primers and the CTX-M consensus reverse primer to characterize the CTX-M beta-lactamase promoter regions and showed their high degree of structure diversity. We found upstream of some bla(CTX-M) genes, a 266-bp sequence 100% identical to the sequence upstream of the Kluyvera ascorbata beta-lactamase gene, suggesting that this chromosomal enzyme is the progenitor of the CTX-M-2/5 cluster.
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Citations
Cited by
Growing Group of Extended-Spectrum β-Lactamases: the CTX-M Enzymes
Bonnet, R. (2004) · Antimicrobial Agents and Chemotherapy · doi:10.1128/aac.48.1.1-14.2004 · Cited by 1,494
CTX-M: changing the face of ESBLs in Europe
Livermore, D. M., Canton, R., Gniadkowski, M., Nordmann, P., Rossolini, G. M., Arlet, G., Ayala, J., Coque, T. M., Kern-Zdanowicz, I., Luzzaro, F., et al. (2006) · Journal of Antimicrobial Chemotherapy · doi:10.1093/jac/dkl483 · Cited by 927
Self-citationIS CR Elements: Novel Gene-Capturing Systems of the 21st Century?
Toleman, M. A., Bennett, P. M., & Walsh, T. R. (2006) · Microbiology and Molecular Biology Reviews · doi:10.1128/mmbr.00048-05 · Cited by 587
Woodford, N., Ward, M. E., Kaufmann, M. E., Turton, J., Fagan, E. J., James, D., Johnson, A. P., Pike, R., Warner, M., Cheasty, T., et al. (2004) · Journal of Antimicrobial Chemotherapy · doi:10.1093/jac/dkh424 · Cited by 472
DNA sequence analysis of the genetic environment of various blaCTX-M genes
Eckert, C., Gautier, V., & Arlet, G. (2006) · Journal of Antimicrobial Chemotherapy · doi:10.1093/jac/dki398 · Cited by 331
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Metadata
- Authors
- Saladin, M., Cao, V. T. B., Lambert, T., Donay, J.-L., Herrmann, J.-L., Ould-Hocine, Z., Verdet, C., Delisle, F., Philippon, A., & Arlet, G.
- Venue
- FEMS Microbiology Letters
- Publisher
- Oxford University Press (OUP)
- Published
- 2002-04
- Volume
- 209
- Issue
- 2
- Pages
- 161-168
- ISSN
- 0378-1097 (ISSN-L)
- 1574-6968
- OpenAlex
- W1995713600
- Cited by
- 348
- References
- 0
- FWCI
- 9.12
- Type
- journal article
- Language
- en
- Open access
- closed
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- Saladin, M., Cao, V. T. B., Lambert, T., Donay, J.-L., Herrmann, J.-L., Ould-Hocine, Z., Verdet, C., Delisle, F., Philippon, A., & Arlet, G. (2002). Diversity of CTX-M β-lactamases and their promoter regions from Enterobacteriaceae isolated in three Parisian hospitals. FEMS Microbiology Letters. https://doi.org/10.1111/j.1574-6968.2002.tb11126.x
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