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Characterization of ESBL (SHV-12) producing clinical isolate of Enterobacter aerogenes from a tertiary care hospital in Nigeria.


ABSTRACT:

Background

We studied the beta-lactamases of an E. aerogenes isolate recovered from the blood of a two-year-old patient. The isolate demonstrated a disk-diffusion phenotype typical for an AmpC-ESBL co-producer.

Methods

Microbiology studies were performed according to standard protocols. The resistance gene was identified by transconjugation and cloning experiments.

Results

By transconjugation only a narrow spectrum beta-lactamase (TEM-1) encoded on a small plasmid was transmitted. The ESBL was cloned and expressed in an E. coli host. Sequence analysis of the recombinant plasmid revealed blaSHV-12 associated to the insertion sequence, IS26.

Conclusion

This is the first study demonstrated the occurrence of SHV-12 in Nigeria.

SUBMITTER: Kasap M 

PROVIDER: S-EPMC2817643 | biostudies-literature | 2010 Jan

REPOSITORIES: biostudies-literature

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Characterization of ESBL (SHV-12) producing clinical isolate of Enterobacter aerogenes from a tertiary care hospital in Nigeria.

Kasap Murat M   Fashae Kayode K   Torol Sinem S   Kolayli Fetiye F   Budak Fatma F   Vahaboglu Haluk H  

Annals of clinical microbiology and antimicrobials 20100112


<h4>Background</h4>We studied the beta-lactamases of an E. aerogenes isolate recovered from the blood of a two-year-old patient. The isolate demonstrated a disk-diffusion phenotype typical for an AmpC-ESBL co-producer.<h4>Methods</h4>Microbiology studies were performed according to standard protocols. The resistance gene was identified by transconjugation and cloning experiments.<h4>Results</h4>By transconjugation only a narrow spectrum beta-lactamase (TEM-1) encoded on a small plasmid was trans  ...[more]

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