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- Detection of Pseudomonas aeruginosa Carried a New Array of Gene Cassettes within Class 1 Integron Isolated from a Teaching Hospital in Nanjing, China
- Yuan Wu† , Hui Li† , Jun Li , Zu Hu Huang
- J. Microbiol. 2008;46(6):687-691. Published online December 24, 2008
- DOI: https://doi.org/10.1007/s12275-008-0021-6
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- 9 Crossref
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Abstract
- We report here novel array of gene cassettes found in single variable region of class 1 integron disseminated in Pseudomonas aeruginosa isolated from a teaching hospital in Nanjing, Jiangsu Province, China. 29 of 47 (61%) P. aeruginosa strains were confirmed haboured class 1 integron, and all the positive strains have the same variable region confirmed by PCR and RFLP methods. The variable region contained an unreported order of four gene cassettes aac(6’)-II-aadA13-cmlA8-oxa 10. Of those, cmlA8 gene was a variant of cmlA5 encoding non-enzymatic protein which putatively confer resistance to chloramphenicol. Susceptibility testing revealed multidrug-resistant mechanisms were involved in the class 1 integron positive clinical isolates. And the class 1 integron located on an about 15 kb transferable plasmid was certified by conjugation experiment and plasmid DNA analysis. The macro restriction profile indicated those clinical strains were clonally related.
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Citations
Citations to this article as recorded by
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