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DNA restriction patterns produced by pulsed-field gel electrophoresis in Moraxella catarrhalis isolated from different geographical areas

Published online by Cambridge University Press:  01 June 1999

G. MARTINEZ ,
K. AHMED ,
C. H. ZHENG ,
K. WATANABE ,
K. OISHI  and
T. NAGATAKE
G. MARTINEZ
Affiliation:
Department of Internal Medicine, Institute of Tropical Medicine, Nagasaki University, Nagasaki, Japan
K. AHMED
Affiliation:
Department of Internal Medicine, Institute of Tropical Medicine, Nagasaki University, Nagasaki, Japan
C. H. ZHENG
Affiliation:
Department of Internal Medicine, Institute of Tropical Medicine, Nagasaki University, Nagasaki, Japan
K. WATANABE
Affiliation:
Department of Internal Medicine, Institute of Tropical Medicine, Nagasaki University, Nagasaki, Japan
K. OISHI
Affiliation:
Department of Internal Medicine, Institute of Tropical Medicine, Nagasaki University, Nagasaki, Japan
T. NAGATAKE
Affiliation:
Department of Internal Medicine, Institute of Tropical Medicine, Nagasaki University, Nagasaki, Japan
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Abstract

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Pulsed field gel electrophoresis (PFGE) of the genomic DNA of Moraxella catarrhalis was done in 172 strains isolated from sputum of patients with respiratory infections in Nagasaki (130 strains), Europe (14 strains), Thailand (6 strains), Uganda (3 strains), Bangladesh (5 strains) and Kuwait (14 strains). Restriction endonuclease with SmaI generated 4–16 DNA fragments ranging from 1000 kb to 24·25 kb and was classified into 31 major groups. It was found that there were wide variations of DNA restriction patterns of strains isolated from the same and different geographical areas. DNA restriction patterns of strains isolated in Nagasaki during the last 12 years showed dynamic changes of the predominant strains in each time period. We conclude from this study that PFGE is a suitable method to document interstrain variation in M. catarrhalis.

Type
Research Article
Information
Epidemiology & Infection , Volume 122 , Issue 3 , June 1999 , pp. 417 - 422
Copyright
© 1999 Cambridge University Press