() is a clinical multidrug-resistant pathogen causing life-threatening infection, which makes it important to discover antibacterial agents with novel scaffolds and unique mechanism. In this study, the diarylurea scaffold was found to have potent antibacterial effect on . Diarylurea with benign drug-like property exhibited potent antibacterial and anti-biofilm activity through inhibiting the genes expression of NlpC/p60 hydrolase-secreted antigen A () and autolysins (), down-regulating the expression of biofilm adherence related genes aggregation substance (), enterococcal surface protein () against . Moreover, can be docked into SagA to inhibit daughter cell separation. In a mouse model of abdominal infection, decreased the bacterial load and the level of IL-6 and TNF-α in a time-dependent manner. Overall, these findings indicated that diarylurea has the potential to be developed as a therapeutic agent to treat drug-resistant enterococci and biofilm-related infections.
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http://dx.doi.org/10.3389/fmicb.2022.1071255 | DOI Listing |
Molecules
January 2025
Department of Microbiology, Wroclaw Medical University, 50-368 Wroclaw, Poland.
Graphite oxidation to graphene oxide (GO) is carried out using methods developed by Brodie (GO-B) and Hummers (GO-H). However, a comparison of the antibacterial properties based on the physicochemical properties has not been performed. Therefore, this paper outlines a comparative analysis of GO-H and GO-B on antibacterial efficacy against Gram-positive and Gram-negative bacterial cultures and biofilms in an aqueous environment and discusses which of the properties of these GO nanomaterials have the most significant impact on the antibacterial activity of these materials.
View Article and Find Full Text PDFInt J Mol Sci
January 2025
Department of Microbiology, Collegium Medicum of L. Rydygier in Bydgoszcz, Nicolaus Copernicus University in Toruń, 9 M. Skłodowskiej-Curie Street, 85-094 Bydgoszcz, Poland.
Antibiotic resistance in microorganisms is an escalating global concern, exacerbated by their formation of biofilms, which provide protection through an extracellular matrix and communication via quorum sensing, enhancing their resistance to treatment. This situation has driven the search for alternative approaches, particularly those using natural compounds. This study explores the potential of phytochemicals, such as quercetin, apigenin, arbutin, gallic acid, proanthocyanidins, and rutin, known for their antibacterial properties and ability to inhibit biofilm formation and disrupt mature biofilms.
View Article and Find Full Text PDFMicroorganisms
January 2025
Department of Molecular Biology, Faculty of Biology, University of Plovdiv, Tzar Assen 24, 4000 Plovdiv, Bulgaria.
Lactobacillus is a key genus of probiotics commonly utilized for the treatment of oral infections The primary aim of our research was to investigate the probiotic potential of the newly isolated DPL5 strain from human breast milk, focusing on its ability to combat biofilm-forming pathogens such as . Employing in vitro approaches, we demonstrate DPL5's ability to endure at pH 3 with survival rates above 30%, and withstand the osmotic stress often found during industrial processes like fermentation and freeze drying, retaining over 90% viability. The lyophilized cell-free supernatant of DPL5 had a significant antagonistic effect against biofilm-producing nasal strains of , and it completely eradicated biofilms at subinhibitory concentrations of 20 mg·mL.
View Article and Find Full Text PDFAntibiotics (Basel)
December 2024
Institute of Innovation Management, Kazan National Research Technological University, K. Marx Street 68, 420015 Kazan, Russia.
Silver nanoparticles (AgNPs) are a promising tool in the fight against pathogenic microorganisms. "Green" nanoparticles are especially valuable due to their environmental friendliness and lower energy consumption during production, as well as their ability to minimize the number of toxic by-products. This review focuses on the features of AgNP synthesis using living organisms (bacteria, fungi, plants) and the involvement of various biological compounds in this process.
View Article and Find Full Text PDFFood Chem
January 2025
School of Food Science and Engineering, and Natural Food Macromolecule Research Center, Shaanxi University of Science & Technology, Xi'an, Shaanxi 710021, China. Electronic address:
The synergistic effects of allicin nanoemulsion (AcN) and ε-polylysine (ε-PL) against Escherichia coli were investigated in this study. The combination of AcN and ε-PL synergistically inhibited the planktonic growth of E. coli, with a low fractional inhibitory concentration index of 0.
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