OBJECTIVES: To compare the capability of biofilm development between Streptococcus pneumoniae isolates from cystic fibrosis (CF) respiratory samples and those from non-CF blood cultures. Antibiotic susceptibility of biofilm-forming isolates, as well as differences between antibiotic susceptibility of sessile cells [minimum biofilm inhibitory concentration (MBIC)] and their planktonic counterparts (conventional MIC), were also assessed. METHODS: Biofilm formation was performed using a microtitre method in 20 CF and 22 non-CF blood culture S. pneumoniae isolates. RESULTS AND CONCLUSIONS: Biofilm formation occurs more frequently among S. pneumoniae isolates from CF (80%) than among non-CF blood culture isolates (50%) (P = 0.04). Moreover MBICs were significantly higher than conventional planktonic MICs among CF but not among non-CF blood isolates, suggesting a high adaptability of CF strains to form biofilms in adverse conditions.
OBJECTIVES: To compare the capability of biofilm development between Streptococcus pneumoniae isolates from cystic fibrosis (CF) respiratory samples and those from non-CF blood cultures. Antibiotic susceptibility of biofilm-forming isolates, as well as differences between antibiotic susceptibility of sessile cells [minimum biofilm inhibitory concentration (MBIC)] and their planktonic counterparts (conventional MIC), were also assessed. METHODS: Biofilm formation was performed using a microtitre method in 20 CF and 22 non-CF blood culture S. pneumoniae isolates. RESULTS AND CONCLUSIONS: Biofilm formation occurs more frequently among S. pneumoniae isolates from CF (80%) than among non-CF blood culture isolates (50%) (P = 0.04). Moreover MBICs were significantly higher than conventional planktonic MICs among CF but not among non-CF blood isolates, suggesting a high adaptability of CF strains to form biofilms in adverse conditions.
Authors: Joe J Harrison; Carol A Stremick; Raymond J Turner; Nick D Allan; Merle E Olson; Howard Ceri Journal: Nat Protoc Date: 2010-06-10 Impact factor: 13.491
Authors: Jorge E Vidal; Herbert P Ludewick; Rebekah M Kunkel; Dorothea Zähner; Keith P Klugman Journal: Infect Immun Date: 2011-08-08 Impact factor: 3.441
Authors: Jorge E Vidal; Kristen E Howery; Herbert P Ludewick; Porfirio Nava; Keith P Klugman Journal: Infect Immun Date: 2013-02-12 Impact factor: 3.441
Authors: Jesse R Willis; Ester Saus; Susana Iraola-Guzmán; Elena Cabello-Yeves; Ewa Ksiezopolska; Luca Cozzuto; Luis A Bejarano; Nuria Andreu-Somavilla; Miriam Alloza-Trabado; Andrea Blanco; Anna Puig-Sola; Elisabetta Broglio; Carlo Carolis; Julia Ponomarenko; Jochen Hecht; Toni Gabaldón Journal: J Oral Microbiol Date: 2021-05-17 Impact factor: 5.474
Authors: Carlos J Sanchez; Nikhil Kumar; Anel Lizcano; Pooja Shivshankar; Julie C Dunning Hotopp; James H Jorgensen; Hervé Tettelin; Carlos J Orihuela Journal: PLoS One Date: 2011-12-08 Impact factor: 3.240