The value of biofilm testing to guide antimicrobial stewardship in chronic respiratory diseases

Laia Fernández-Barat, Nil Vázquez Burgos, Victoria Alcaraz, Leticia Bueno-Freire, Ruben López-Aladid, Roberto Cabrera, Albert Gabarrús, Andrea Palomeque, Patricia Oscanoa, Adrian Ceccato, Ana Motos, Rosanel Amaro, Thierry Bernardi, Christian Provot, Alba Soler-Comas, Laura Muñoz, Jordi Vila, Antoni Torres

Producció científica: Article en revista indexadaArticleAvaluat per experts


Introduction: Biofilm production is an important yet currently overlooked aspect of diagnostic microbiology that has implications for antimicrobial stewardship. In this study, we aimed to validate and identify additional applications of the BioFilm Ring Test® (BRT) for Pseudomonas aeruginosa (PA) isolates from patients with bronchiectasis (BE). Materials and methods: Sputa were collected from BE patients who had at least one PA positive culture in the previous year. We processed the sputa to isolate both mucoid and non-mucoid PA, and determined their susceptibility pattern, mucA gene status, and presence of ciprofloxacin mutations in QRDR genes. The Biofilm production index (BPI) was obtained at 5 and 24 hours. Biofilms were imaged using Gram staining. Results: We collected 69 PA isolates, including 33 mucoid and 36 non-mucoid. A BPI value below 14.75 at 5 hours predicted the mucoid PA phenotype with 64% sensitivity and 72% specificity. Conclusion: Overall, our findings suggest that the fitness-cost associated with the mucoid phenotype or ciprofloxacin resistance is shown through a time-dependent BPI profile. The BRT has the potential to reveal biofilm features with clinical implications.

Idioma originalAnglès
Número d’article1142274
RevistaFrontiers in Cellular and Infection Microbiology
Estat de la publicacióPublicada - 2023
Publicat externament


Navegar pels temes de recerca de 'The value of biofilm testing to guide antimicrobial stewardship in chronic respiratory diseases'. Junts formen un fingerprint únic.

Com citar-ho