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Journal of Clinical Microbiology, January 2005, p. 458-461, Vol. 43, No. 1
0095-1137/05/$08.00+0     doi:10.1128/JCM.43.1.458-461.2005
Copyright © 2005, American Society for Microbiology. All Rights Reserved.

Clonal Diversity of Metallo-ß-Lactamase-Possessing Pseudomonas aeruginosa in Geographically Diverse Regions of Japan

Soichiro Kimura,1 Jimena Alba,1 Katsuaki Shiroto,1 Reiko Sano,2 Yoshihito Niki,3 Shigefumi Maesaki,4 Koji Akizawa,5 Mitsuo Kaku,6 Yuji Watanuki,7 Yoshikazu Ishii,1* and Keizo Yamaguchi1

Department of Microbiology, Toho University School of Medicine, Tokyo,1 Nara Medical University, Nara,2 Kawasaki Medical School, Okayama,3 Saitama Medical School, Saitama,4 Hokkaido University Hospital, Sapporo,5 Tohoku University Graduate School of Medicine, Miyagi,6 Kanagawa Cardiovascular and Respiratory Diseases Center, Kanagawa, Japan7

Received 24 March 2004/ Returned for modification 30 April 2004/ Accepted 1 June 2004

The aim of this study was to determine the distribution of metallo-ß-lactamase-producing Pseudomonas aeruginosa in Japan and to investigate the molecular characteristics of resistance gene cassettes including the gene encoding this enzyme. A total of 594 nonduplicate strains of P. aeruginosa isolated from 60 hospitals throughout Japan in 2002 were evaluated. This study indicated that although the prevalence of imipenem-resistant P. aeruginosa has not increased compared to that found in previous studies, clonal distribution of the same strain across Japan is evident.

* Corresponding author. Mailing address: Department of Microbiology, Toho University School of Medicine, 5-21-16 Omori-nishi, Ota-ku, Tokyo 1438540, Japan. Phone: 81-3-3762-4151, ext. 2396. Fax: 81-3-5493-5415. address: E-mail: yoishii{at}med.toho-u.ac.jp.

Journal of Clinical Microbiology, January 2005, p. 458-461, Vol. 43, No. 1
0095-1137/05/$08.00+0     doi:10.1128/JCM.43.1.458-461.2005
Copyright © 2005, American Society for Microbiology. All Rights Reserved.



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