Disruption of quorum sensing pathway of pathogenic microbes is considered as novel approach to fight against infectious diseases. The current study was planned to evaluate the antibiofilm and quorum sensing inhibitory potential of . Antibacterial and antibiofilm potential of extracts was determined through agar well diffusion and crystal violet assay against sinusitis isolates, that is, , while quorum sensing inhibition efficacy of extracts was determined through violacein inhibition assay using as bacterial model The methanolic extract of presented the highest antimicrobial activity against and antibiofilm activity against (77.42 ± 1.51%) while -hexane extract was found to be least active against all tested bacterial strains Quorum sensing inhibition activity of extracts against showed significant dose-dependent inhibition in violacein production by different concentrations of methanolic extract. Furthermore, none of the extracts of showed any hemolytic activity against human RBCs and hold considerable thrombolytic potential in comparison to streptokinase (75.9 ± .46%). In conclusion, findings suggest that leaves are excellent source of phytochemicals with potent antibiofilm and quorum sensing inhibition potential.
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http://dx.doi.org/10.1177/15593258221132080 | DOI Listing |
J Appl Microbiol
January 2025
G.B. Elyakov Pacific Institute of Bioorganic Chemistry FEB RAS; 690022 Vladivostok, Russia.
Aims: The aim of this study was to evaluate the antioxidant and anti-inflammatory effects of marine fungal cerebroside flavuside B (FlaB) on Staphylococcus aureus-infected keratinocytes in in vitro skin wounds and to identify FlaB targets in bacterial and human cells.
Methods And Results: A combination of ELISA, plate spectrofluorimetry, and flow cytometry with fluorescence dye staining, scratch assay, and real-time cell imaging techniques was used to investigate the effects of FlaB on S. aureus-infected HaCaT keratinocytes.
Drug Des Devel Ther
January 2025
Department of Infectious Diseases, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, People's Republic of China.
In recent years, the incidence of fungal infections has been rising annually, especially among immunocompromised populations, posing a significant challenge to public health. Although antifungal medications provide some relief, the escalating problem of resistance sharply curtails their effectiveness, presenting an urgent clinical dilemma that demands immediate attention. Research has shown that fungal resistance is closely related to quorum sensing (QS), and QS inhibitors (QSIs) are considered an effective solution to this issue.
View Article and Find Full Text PDFJ Virol
December 2024
College of Life Science and Technology, Beijing University of Chemical Technology, Beijing, Beijing, China.
mSystems
December 2024
River Ecosystems Laboratory, Alpine and Polar Environmental Research Center, Ecole Polytechnique Fédérale de Lausanne (EPFL), Sion, Switzerland.
Unlabelled: Glacier-fed streams are permanently cold, ultra-oligotrophic, and physically unstable environments, yet microbial life thrives in benthic biofilm communities. Within biofilms, microorganisms rely on secondary metabolites for communication and competition. However, the diversity and genetic potential of secondary metabolites in glacier-fed stream biofilms remain poorly understood.
View Article and Find Full Text PDFNat Prod Res
January 2025
Vocational School of Health Services, Suleyman Demirel University, Isparta, Turkey.
The study aims to evaluate the Quorum Sensing (QS) system inhibition against some Gram-positive and Gram-negative bacteria detected by molecular modeling of R. cathartica L. plant extract.
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