Please use this identifier to cite or link to this item: https://scholarhub.balamand.edu.lb/handle/uob/2178
Title: Isolation of the first metallo-beta-lactamase producing Klebsiella pneumoniae in Lebanon
Authors: Daoud, Ziad
Hobeika, E
Choucair, A
Rohban, Raymond
Affiliations: Faculty of Medicine 
Keywords: Metallo-β-lactamase
Klebsiella pneumoniae
Extended spectrum beta-lactamase
Resistance
Carbapenemases
BlaIMP-1
BlaCTX-M-15
Subjects: Lebanon
Issue Date: 2008
Part of: Revista espanola de quimioterapia
Volume: 21
Issue: 2
Start page: 123
End page: 126
Abstract: 
A 58 year-old man was admitted to the Saint Joseph Hospital-Raymond and Aida Najjar polyclinic in Beirut on July 17, 2007 to undergo surgery for a moderately differentiated colonic adenocarcinoma (T3N0). Following several discharges and re-admissions, an extended spectrum beta-lactamase (ESBL) producing Escherichia coli susceptible to imipenem was isolated. The patient was put on imipenem and metronidazole. Three weeks later, imipenem (IMP) resistant Klebsiella pneumoniae was isolated. METHODS AND RESULTS: The antimicrobial susceptibility profile of the imipenem-resistant Klebsiella pneumoniae strain and related minimum inhibitory concentrations of antibiotics were determined. Hydrolysis of IMP was evaluated and production of metallo-beta-lactamase (MBL) was detected by a double disk-synergy test, ethylene diamine tetraacetic acid (EDTA) inhibited the imipenemase activity, whereas clavulanate and tazobactam did not, this suggesting the production of a metallo-beta-lactamase. Isoelectric focusing analysis was performed and indicated the presence of a cefotaximase (blaCTX-M-15). Polymerase chain reaction (PCR) was used and detected the presence of blaIMP-1 and blaCTX-M genes. CONCLUSIONS: During the last decade, many hospital outbreaks caused by ESBL-producing Enterobacteriaceae spp. have been reported in Lebanon. To our knowledge, this is the first report of a clinical isolate of K. pneumoniae producing an MBL in Lebanon.
URI: https://scholarhub.balamand.edu.lb/handle/uob/2178
Open URL: Link to full text
Type: Journal Article
Appears in Collections:Faculty of Medicine

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