African Journal of Biotechnology Vol. 5 (6), pp. 523-525, 15 March 2006   

ISSN 1684–5315 © 2006 Academic Journals        

Full Length Research Paper

Patterns of resistance to β-lactams and β-lactamase inhibitors in uropathogenic Escherichia coli strains isolated from animals in Portugal

Christian G. Ramos1,* and Marta T. Costa2

1 SaudQuest, Av. Conde Nova Goa, 9-c, 1070-071 Portugal.

2CIISA, Veterinary Medical School, Universidade Técnica de Lisboa, Portugal.

*Corresponding author. E-mail: christian.ramos@ist.utl.pt. Fax +351 21 3882831.

Accepted 31 October, 2005

 FMV 1953 uropathogenic Escherichia coli isolate was extremely resistant to amoxicillin, co-amoxiclav, ticarcillin, mecillinam, cefoxitime, cefixime, cefuroxime, cefotaxime, ceftazidime, ceftriaxone and aztreoname. From the resistance patterns observed we deduce the phenotype as producing a TEM-1 β -lactamase, a hyperproduced Amp-C β-lactamase and an OXA-3 β-lactamase or a PBP-2 mutation isolate.

Key words: Antibiotic resistance, uropathogenic Escherichia coli, phenotype characterization.