6 results match your criteria nonbiofilm-forming strains

  • Page 1 of 1

Qualitative and quantitative change of the tolerance to liposomal amphotericin B triggered by biofilm maturation in C. parapsilosis.

Med Mycol 2020 Aug;58(6):827-834

Department of Pharmaceutical Sciences-Microbiology, University of Perugia, Perugia, Italy.

Candida parapsilosis is an emerging opportunistic pathogen present in both clinical and natural environment, with a strong frequency of biofilm forming strains. While the drugs active against biofilm are rare, liposomal amphotericin B is credited with an antibiofilm activity in some opportunistic species of the genus Candida. Using freshly isolated strains from hospital environment, in this paper we could show the prevalence of biofilm forming vs. Read More

View Article and Full-Text PDF

Antimicrobial Agent Susceptibility and Typing of Staphylococcal Isolates from Subclinical Mastitis in Ewes.

Microb Drug Resist 2019 Sep 22;25(7):1099-1110. Epub 2019 Apr 22.

Veterinary Faculty, University of Thessaly, Karditsa, Greece.

Objective was to study susceptibility to antimicrobial agents of 142 staphylococcal isolates from subclinical mastitis in ewes. In total, 41.5% of these were resistant and 5. Read More

View Article and Full-Text PDF
September 2019

Violacein antimicrobial activity on Staphylococcus epidermidis and synergistic effect on commercially available antibiotics.

J Appl Microbiol 2017 Oct;123(4):853-860

Department of Clinical and Toxicological Analysis, Federal University of Ceará, Fortaleza, Brazil.

Aims: The study aimed to assess whether violacein has antimicrobial activity on Staphylococcus epidermidis and synergistically modulates the action of commercially available antimicrobial drugs.

Methods And Results: Violacein showed excellent antimicrobial activity on biofilm-forming and nonbiofilm-forming S. epidermidis strains (ATCC 35984) (ATCC 12228), with bacteriostatic (MIC = 20 μg ml and 10 μg ml respectively) and bactericidal effects (MBC = 20 μg ml for both strains), observed in short periods of exposure. Read More

View Article and Full-Text PDF
October 2017

Transcriptional Profiling of Biofilm Regulators Identified by an Overexpression Screen in .

G3 (Bethesda) 2017 08 7;7(8):2845-2854. Epub 2017 Aug 7.

Pacific Northwest Research Institute, Seattle, Washington 98122

Biofilm formation by microorganisms is a major cause of recurring infections and removal of biofilms has proven to be extremely difficult given their inherent drug resistance . Understanding the biological processes that underlie biofilm formation is thus extremely important and could lead to the development of more effective drug therapies, resulting in better infection outcomes. Using the yeast as a biofilm model, overexpression screens identified , , , , , and as regulators of biofilm formation. Read More

View Article and Full-Text PDF

Polyelectrolyte multilayers with intrinsic antimicrobial functionality: the importance of mobile polycations.

Langmuir 2009 Jul;25(13):7686-94

Department of Materials Science and Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, USA.

Cationic contact-killing is an important strategy for creating antimicrobial surfaces that prevent viable bacteria attachment. Recent studies have shown that highly swollen, compliant surfaces resist bacterial attachment and a sufficient density of mobile cationic charge can effectively disrupt bacterial cell membranes. Polyelectrolyte multilayers (PEMs), a popular coating system for surface modification, have been used to kill bacteria through the incorporation of contact-killing or leaching biocides. Read More

View Article and Full-Text PDF

Surface charge influences enterococcal prevalence in mixed-species biofilms.

J Appl Microbiol 2007 May;102(5):1254-60

Department of Biomedical Engineering, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands.

Aim: To study the influence of 15 microbial isolates on the prevalence of charge-heterogeneous and charge-homogeneous Enterococcus faecalis strains, all isolated from biliary stents, in mixed-species biofilms.

Methods And Results: Six Enterococcus faecalis strains were paired with 15 other microbial isolates to form mixed-species biofilms in a microtitre plate assay. Charge-heterogeneous Enterococcus faecalis strains display two subpopulations with different surface charges, expressed as a biomodal zeta potential distribution. Read More

View Article and Full-Text PDF
  • Page 1 of 1