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Characterization of a New Extended-Spectrum β-Lactamase (TEM-87) Isolated in <i>Proteus mirabilis</i> during an Italian Survey

Mariagrazia Perilli, Bernardetta Segatore, Maria Rosaria De Massis, Nicola Franceschini, Ciro Bianchi, Gian María Rossolini, Gianfranco Amicosante

Antimicrobial Agents and Chemotherapy · 2002 · 14 citations · 13 references

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Abstract

A new natural TEM derivative, named TEM-87, was identified in a Proteus mirabilis isolate from an Italian hospital. Compared to TEM-1, TEM-87 contains the following mutations: E104K, R164C, and M182T. Kinetic analysis of TEM-87 revealed extended-spectrum activity against oxyimino cephalosporins (preferentially ceftazidime) and aztreonam. Expression of blaTEM-87 in Escherichia coli decreased the host susceptibility to these drugs.

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