This work was focused on in vitro evaluation of anti-biofilm and anti-quorum sensing effects of four selected flavonoid compounds /(+)-catechin, caffeic acid, quercetin and morin/ using the strain Pseudomonas aeruginosa PAO1. At a concentration of 0.5 MIC quercetin was the only compound found to potently reduce both P. aeruginosa biofilm formation (95%) and its twitching motility. The chemical scaffold of quercetin, a common dietary polyphenol, may actually inspire development of novel and more effective medicinal agents targeting P. aeruginosa, the bacterium well known for its resistance.
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http://dx.doi.org/10.2174/1389201016666150505121951 | DOI Listing |
Microbiol Spectr
January 2025
Department of Microbiology, Immunology & Molecular Genetics, University of Texas Health Science Center at San Antonio, San Antonio, Texas, USA.
a major human fungal pathogen, can form biofilms on a variety of inert and biological surfaces. biofilms allow for immune evasion, are highly resistant to antifungal therapies, and represent a significant complication for a wide variety of immunocompromised patients in clinical settings. While transcriptional regulators and global transcriptional profiles of biofilm formation have been well-characterized, much less is known about translational regulation of this important virulence property.
View Article and Find Full Text PDFmSphere
January 2025
School of Medicine, Southern University of Science and Technology, Shenzhen, China.
The universal bacterial second messenger bis-(3'-5')-cyclic dimeric guanosine monophosphate (c-di-GMP) plays critical roles in regulating a variety of bacterial functions such as biofilm formation and virulence. The metabolism of c-di-GMP is inversely controlled by diguanylate cyclases (DGCs) and phosphodiesterases (PDEs). Recently, increasing studies suggested that the protein-protein interactions between DGCs/PDEs and their partners appear to be a common way to achieve specific regulation.
View Article and Find Full Text PDFAppl Environ Microbiol
January 2025
Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, China.
The protection of steel based on microbial biomineralization has emerged as a novel and eco-friendly strategy for corrosion control. However, the molecular basis of the biomineralization process in mineralization bacteria remains largely unexplored. We previously reported that EPS+ strain provides protection against steel corrosion by forming a hybrid biomineralization film.
View Article and Find Full Text PDFMicrobiol Spectr
January 2025
Department of Veterinary Science, National Institute of Infectious Diseases, Tokyo, Japan.
catheter-related bloodstream infections (CRBSIs) are an increasing concern in Japanese hospitals. Although their clinical characteristics have been explored, the genetic relationships and virulence profiles of isolates from CRBSIs remain understudied. Here, using advanced genomic techniques, we investigated the genetic diversity, phylogenetic relationships, and virulence profiles of isolates from patients with bloodstream infections.
View Article and Find Full Text PDFmBio
January 2025
Department of Biochemistry and Molecular Biology, University of Texas Medical Branch, Galveston, Texas, USA.
The chick embryo chorioallantoic membrane (CAM) tumor model is a valuable preclinical model for studying the tumor-colonizing process of serovar Typhimurium. It offers advantages such as cost-effectiveness, rapid turnaround, reduced engraftment issues, and ease of observation. In this study, we explored and validated the applicability of the partially immune-deficient CAM tumor model.
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