A self-suppression mechanism of biofilm development in the cyanobacterium PCC 7942 was recently reported. These studies required quantification of biofilms formed by mutants impaired in the biofilm-inhibitory process. Here we describe in detail the use of chlorophyll measurements as a proxy for biomass accumulation in sessile and planktonic cells of biofilm-forming strains. These measurements allow quantification of the total biomass as estimated by chlorophyll level and representation of the extent of biofilm formation by depicting the relative fraction of chlorophyll in planktonic cells.
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http://dx.doi.org/10.21769/BioProtoc.2406 | DOI Listing |
Viruses
November 2024
Key Laboratory of Tropical Marine Bio-Resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510000, China.
is a major global threat to human health, and phage therapy has emerged as a promising strategy for treating infections caused by multidrug-resistant pathogens. In this study, we isolated and characterized a lytic phage, PaTJ, from wastewater. PaTJ belongs to the phage family , and is featured by short latency (30 min) and large burst size (10 PFU per infected cell).
View Article and Find Full Text PDFPharmaceutics
December 2024
VitroScreen s.r.l., In Vitro Innovation Center, Via Mosè Bianchi 103, 20149 Milan, MI, Italy.
Skin wound healing is a physiological process orchestrated by epithelial and mesenchymal cells able to restore tissue continuity by re-organizing themselves and the ECM. This research study aimed to develop an optimized in vitro experimental model of full-thickness skin, to address molecular and morphological modifications occurring in the re-epithelization and wound healing process. Wound healing starting events were investigated within an experimental window of 8 days at the molecular level by gene expression and immunofluorescence of key epidermal and dermal biomarkers.
View Article and Find Full Text PDFPolymers (Basel)
December 2024
Department of Prosthodontics, Medical University of Warsaw, 02-097 Warsaw, Poland.
Incorporating nanoparticles into denture materials shows promise for the prevention of denture-associated fungal infections. This study investigates the antifungal properties of acrylic modified with microwave-sintered ZnO-Ag nanoparticles. ZnO-Ag nanoparticles (1% and 2.
View Article and Find Full Text PDFMicroorganisms
December 2024
Department of Microbiology and Cell Biology, Montana State University, Bozeman, MT 59718, USA.
spp. are facultative pathogens that contribute to the pathogenesis of multiple bovine diseases, including the bovine respiratory disease complex, and have been shown to form biofilms. Biofilm formation is associated with increased antibiotic resistance in many organisms, but accurate determination of antimicrobial susceptibility in biofilms is challenging.
View Article and Find Full Text PDFMicroorganisms
December 2024
Laboratory of Emerging Infectious Diseases, School of Medicine, Pontifícia Universidade Católica do Paraná, Curitiba 80215-901, PR, Brazil.
Silver nanoparticles have garnered significant attention for their antimicrobial applications. The aim of this study was to develop and characterize a silver nanoparticle-enhanced bone graft and assess its antimicrobial and antibiofilm activities. Bone granules from bovine cancellous femur were impregnated with silver nanoparticles (50 nm).
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