Previous Article | Next Article ![]()
Journal of Clinical Microbiology, January 2001, p. 175-182, Vol. 39, No. 1
Service de Bactériologie-Virologie,
Hôpital de Bicêtre, Assistance Publique-Hôpitaux de
Paris, Faculté de Médecine Paris-Sud, 94275 Le
Kremlin-Bicêtre, France1;
Department of Microbiology, Faculty of Medicine Siriraj
Hospital, Mahidol University, Bangkok 10700, Thailand2; and Department of
Microbiology and Immunology, Finch University of Health Sciences,
The Chicago Medical School, North Chicago, Illinois
600643
Received 20 July 2000/Returned for modification 4 September
2000/Accepted 31 October 2000
Over a 21/2-month period in 1999, 37 ceftazidime-resistant
nonrepetitive enterobacterial isolates were collected from 37 patients in a Bangkok hospital, Thailand. Eighty-one percent of these strains expressed a clavulanic acid-inhibited extended-cephalosporin resistance profile. An identical extended-spectrum
0095-1137/01/$04.00+0 DOI: 10.1128/JCM.39.1.175-182.2001
Copyright © 2001, American Society for Microbiology. All rights reserved.
Molecular Epidemiology of the Integron-Located VEB-1
Extended-Spectrum
-Lactamase in Nosocomial
Enterobacterial Isolates in Bangkok, Thailand
-lactamase (ESBL), VEB-1, was found in 16 unrelated enterobacterial isolates (Escherichia coli, n = 10; Enterobacter
cloacae, n = 2;
Enterobacter sakazakii, n = 1; and Klebsiella pneumoniae, n = 3) and
in two clonally related E. cloacae isolates. The
blaVEB-1 gene was located on mostly
self-conjugative plasmids (ca. 24 to 200 kb) that conferred additional
non-
-lactam antibiotic resistance patterns. Additionally, the
blaVEB-1 gene cassette was part of class 1 integrons varying in size and structure. The
blaVEB-1-containing integrons were mostly
associated with blaOXA-10-like and
arr-2-like gene cassettes, the latter conferring resistance
to rifampin. These data indicated the spread of
blaVEB-1 in Bangkok due to frequent transfer of
different plasmids and class 1 integrons and rarely to clonally related
strains. Plasmid- and integron-mediated resistance to rifampin was also
found in enterobacterial isolates.
*
Corresponding author. Mailing address: Service de
Bactériologie-Virologie, Hôpital de Bicêtre, 78 rue
du Général Leclerc, 94275 Le Kremlin-Bicêtre Cedex,
France. Phone: 33-1-45-21-36-32. Fax: 33-1-45-21-63-40. E-mail:
nordmann.patrice{at}bct.ap-hop-paris.fr.
This article has been cited by other articles:
| Antimicrob. Agents Chemother. | Clin. Microbiol. Rev. |
|---|---|
| Clin. Vaccine Immunol. | ALL ASM JOURNALS |
|---|