1. DNA restriction patterns produced by pulsed-field gel electrophoresis in Moraxella catarrhalis isolated from different geographical areas.
- Author
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Martinez G, Ahmed K, Zheng CH, Watanabe K, Oishi K, and Nagatake T
- Subjects
- Adult, Bangladesh epidemiology, Child, Electrophoresis, Gel, Pulsed-Field, Europe epidemiology, Humans, Japan epidemiology, Kuwait epidemiology, Longitudinal Studies, Moraxella catarrhalis isolation & purification, Neisseriaceae Infections epidemiology, Predictive Value of Tests, Respiratory Tract Infections epidemiology, Restriction Mapping, Thailand epidemiology, Uganda epidemiology, DNA, Bacterial chemistry, Moraxella catarrhalis genetics, Neisseriaceae Infections microbiology, Respiratory Tract Infections microbiology
- Abstract
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.
- Published
- 1999
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