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Vol. 15. Issue 4.
Pages 301-304 (July - August 2011)
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Vol. 15. Issue 4.
Pages 301-304 (July - August 2011)
Original article
Open Access
Biofilm production using distinct media and antimicrobial susceptibility profile of Pseudomonas aeruginosa
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Leandro Reus Rodrigues Perez1,
Corresponding author
leandro.reus@gmail.com

Correspondence to: Laboratory of Clinical Analysis, Faculty of Pharmacy, UFRGS, Av. Ipiranga, 2752/303, 90610-000, Porto Alegre, RS Brazil Phone: +55 (51) 33085412 Fax: +55 (51) 33085437.
, Afonso Luís Barth2
1 Microbiology Unit, Hospital Mãe de Deus; Post-graduation Program in Pharmaceutical Sciences, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
2 Post-graduation Program in Pharmaceutical Sciences, UFRGS; Microbiology Unit and Molecular Biology Service, Hospital de Clínicas, Porto Alegre, RS, Brazil
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Abstract

Biofilm production is an important mechanism for bacterial survival and its occurrence together with antimicrobial resistance represents a challenge for clinical management. Here, we evaluated the ability for biofilm production among P. aeruginosa isolates from patients with or without cystic fibrosis (CF) using two distinct media, besides determining the antimicrobial susceptibility profile of these isolates for eight antimicrobial agents. The ability for biofilm production when TSB medium was used was higher than when used CF sputum media (p=0.0198). However, P. aeruginosa isolates from CF have demonstrated similar performance for biofilm production, independently of the medium used. Besides, among the biofilm-producing isolates, those recovered from CF were more resistant to the carbapenems (meropenem and imipenem) agents than those isolates from non-CF isolates.

Keywords:
biofilm
Pseudomonas aeruginosa
cystic fibrosis
antimicrobial resistance
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