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LETTERS TO THE EDITOR

Emergence of Extended-Spectrum β-Lactamase PER-1 in Proteus vulgaris and Providencia stuartii Isolates from Algiers, Algeria

Hassen Iabadene, Caroline Dallenne, Yamina Messai, Delphine Geneste, Rabah Bakour, Guillaume Arlet
Hassen Iabadene
Laboratoire de Biologie Cellulaire et Moléculaire Faculté des Sciences Biologiques Université des Sciences et de la Technologie Houari Boumediene BP 32 El-Alia Bab-Ezzouar 16111 Algiers, Algeria
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Caroline Dallenne
Université Paris VI Faculté de Médecine Pierre et Marie Curie Laboratoire de Bactériologie UPRES EA 2392 Paris, France
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Yamina Messai
Laboratoire de Biologie Cellulaire et Moléculaire Faculté des Sciences Biologiques Université des Sciences et de la Technologie Houari Boumediene BP 32 El-Alia Bab-Ezzouar 16111 Algiers, Algeria
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Delphine Geneste
Université Paris VI Faculté de Médecine Pierre et Marie Curie Laboratoire de Bactériologie UPRES EA 2392 Paris, France
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Rabah Bakour
Laboratoire de Biologie Cellulaire et Moléculaire Faculté des Sciences Biologiques Université des Sciences et de la Technologie Houari Boumediene BP 32 El-Alia Bab-Ezzouar 16111 Algiers, Algeria
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Guillaume Arlet
Department of Bacteriology UFR Saint-Antoine 27, rue de Chaligny 75012 Paris, France
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  • For correspondence: guillaume.arlet@tnn.ap-hop-paris.fr
DOI: 10.1128/AAC.00274-09
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PER β-lactamases are one of the rarer extended-spectrum β-lactamase (ESBL) families; however, their prevalence is increasing more and more. Two PER types have been described previously (1, 3-7). In addition, sequences for PER-3, -4, and -5 from Aeromonas punctata, Proteus vulgaris, and Acinetobacter baumannii are available in the GenBank database (accession no. AY740681, EU748544, and EU687473); however, no data are published. PER-1 was mainly detected in Europe and was particularly widespread in Turkey (5) and Asia (3), while PER-2 occurred in South America, mostly in Argentina (7). Data on the diffusion of this ESBL gene in Africa are virtually nonexistent. Furthermore, the host genera of the blaPER-1 gene are usually Pseudomonas, Acinetobacter, and Providencia (1, 5). We report the emergence of the PER-1 ESBL in Proteus vulgaris and Providencia stuartii in clinical isolates from an Algiers public hospital.

Five isolates of P. vulgaris (n = 4) and P. stuartii (n = 1) were collected in 2007 by the bacteriology laboratory of Beni Messous hospital from urine and blood specimens and identified by the API 20E system (bioMérieux, Marcy l'Etoile, France). Antimicrobial susceptibility testing by the disk diffusion method and Etest (AB Biodisk, Solna, Sweden) showed that the five isolates were resistant to ceftazidime (MIC ≥ 256 μg/ml). Intermediate resistance to piperacillin, cefotaxime, and cefepime (MIC = 8 to 32 μg/ml) were also observed. All isolates tested were susceptible to imipenem (Table 1). Finally, a marked synergetic effect between clavulanic acid and ceftazidime, indicative of the production of an ESBL, was observed. PCR analysis using primers previously described (5) and sequencing revealed the presence of blaPER-1. Enterobacterial repetitive intergenic consensus-PCR typing was performed as described previously (2) for the four ESBL producers belonging to the P. vulgaris species. Similar enterobacterial repetitive intergenic consensus-PCR patterns were observed, suggesting clearly that the P. vulgaris isolates are genetically related; thus, clonal expansion is probable.

Conjugation studies, with ceftazidime selection (10 μg/ml) and Escherichia coli J53 (rifampin resistant) as the recipient, showed that the blaPER-1 gene was transferable and located on a 100-kb plasmid, which also conferred resistance to trimethoprim, trimethoprim-sulfamethoxazole, and kanamycin for the four P. vulgaris isolates but only trimethoprim for the P. stuartii isolate. Regarding the genetic environment, PCRs were performed according to the schematic map described previously (5). The upstream region of blaPER-1 was explored using primers PER.D and PER.extA designed in that study. We observed that ISPa12 was present in the five isolates of our study and genetically linked to blaPER-1. However, PCRs failed to identify ISPa13 in all of our isolates.

The epidemiological data regarding ESBLs available for Algeria report the presence of only CTX-M-3, CTX-M-15, SHV-12, and VEB-1 in various species of gram-negative bacteria (2). This first report of PER-1 in two enterobacterial species from Algiers indicates that the blaPER-1 gene has spread south of the Mediterranean and perhaps even to Africa.

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TABLE 1.

MICs of antimicrobial agents for the PER-1-producing isolates and corresponding transconjugantsa

ACKNOWLEDGMENTS

This work was supported by a grant from Algerian PNE program and from University Pierre et Marie Curie, France.

  • Copyright © 2009 American Society for Microbiology

REFERENCES

  1. 1.↵
    Empel, J., K. Filczak, A. Mrowka, W. Hryniewicz, D. M. Livermore, and M. Gniadkowski. 2007. Outbreak of Pseudomonas aeruginosa infections with PER-1 extended-spectrum β-lactamase in Warsaw, Poland: further evidence for an international clonal complex. J. Clin. Microbiol.45:2829-2834.
    OpenUrlAbstract/FREE Full Text
  2. 2.↵
    Iabadene, H., Y. Messai, H. Ammari, N. Ramdani-Bouguessa, S. Lounes, R. Bakour, and G. Arlet. 2008. Dissemination of ESBL and Qnr determinants in Enterobacter cloacae in Algeria. J. Antimicrob. Chemother.62:133-136.
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    Lee, H. W., H. Y. Kang, K. S. Shin, and J. Kim. 2007. Multidrug-resistant Providencia isolates carrying blaPER-1,blaVIM-2, and armA. J. Microbiol.45:272-274.
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    Perilli, M., F. De Santis, C. Mugnaioli, G. M. Rossolini, F. Luzzaro, S. Stefani, M. L. Mezzatesta, A. Toniolo, and G. Amicosante. 2007. Spread of Enterobacteriaceae carrying the PER-1 extended-spectrum β-lactamase gene as a chromosomal insert: a report from Italy. J. Antimicrob. Chemother.59:323-324.
    OpenUrlCrossRefPubMedWeb of Science
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    Poirel, L., L. Cabanne, H. Vahaboglu, and P. Nordmann. 2005. Genetic environment and expression of the extended-spectrum β-lactamase blaPER-1 gene in gram-negative bacteria. Antimicrob. Agents Chemother.49:1708-1713.
    OpenUrlAbstract/FREE Full Text
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    Poirel, L., T. Bruderer, R. Frei, S. Bernabeu, P. Graber, and P. Nordmann. 2008. Multidrug-resistant Providencia stuartii expressing extended-spectrum β-lactamase PER-1, originating in Kosovo. J. Antimicrob. Chemother.61:1392-1393.
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    Quinteros, M., M. Radice, N. Gardella, M. M. Rodriguez, N. Costa, D. Korbenfeld, E. Couto, and G. Gutkind. 2003. Extended-spectrum β-lactamases in Enterobacteriaceae in Buenos Aires, Argentina, public hospitals. Antimicrob. Agents Chemother.47:2864-2867.
    OpenUrlAbstract/FREE Full Text
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Emergence of Extended-Spectrum β-Lactamase PER-1 in Proteus vulgaris and Providencia stuartii Isolates from Algiers, Algeria
Hassen Iabadene, Caroline Dallenne, Yamina Messai, Delphine Geneste, Rabah Bakour, Guillaume Arlet
Antimicrobial Agents and Chemotherapy Aug 2009, 53 (9) 4043-4044; DOI: 10.1128/AAC.00274-09

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Emergence of Extended-Spectrum β-Lactamase PER-1 in Proteus vulgaris and Providencia stuartii Isolates from Algiers, Algeria
Hassen Iabadene, Caroline Dallenne, Yamina Messai, Delphine Geneste, Rabah Bakour, Guillaume Arlet
Antimicrobial Agents and Chemotherapy Aug 2009, 53 (9) 4043-4044; DOI: 10.1128/AAC.00274-09
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KEYWORDS

Proteus vulgaris
Providencia
beta-lactamases

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