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Xanthones Active against Multidrug Resistance and Virulence Mechanisms of Bacteria
- Source :
- Antibiotics, Volume 10, Issue 5, Antibiotics, Vol 10, Iss 600, p 600 (2021)
- Publication Year :
- 2021
- Publisher :
- MDPI AG, 2021.
-
Abstract
- The emergence of multidrug and extensively drug-resistant pathogenic bacteria able to resist to the action of a wide range of antibiotics is becoming a growing problem for public health. The search for new compounds with the potential to help in the reversion of bacterial resistance plays an important role in current medicinal chemistry research. Under this scope, bacterial efflux pumps are responsible for the efflux of antimicrobials, and their inhibition could reverse resistance. In this study, the multidrug resistance reversing activity of a series of xanthones was investigated. Firstly, docking studies were performed in the AcrAB-TolC efflux pump and in a homology model of the NorA pump. Then, the effects of twenty xanthone derivatives on bacterial growth were evaluated in Staphylococcus aureus 272123 and in the acrA gene-inactivated mutant Salmonella enterica serovar Typhimurium SL1344 (SE03). Their efflux pump inhibitory properties were assessed using real-time fluorimetry. Assays concerning the activity of these compounds towards the inhibition of biofilm formation and quorum sensing have also been performed. Results showed that a halogenated phenylmethanamine xanthone derivative displayed an interesting profile, as far as efflux pump inhibition and biofilm formation were concerned. To the best of our knowledge, this is the first report of xanthones as potential efflux pump inhibitors.
- Subjects :
- 0301 basic medicine
Microbiology (medical)
030106 microbiology
RM1-950
medicine.disease_cause
Biochemistry
Microbiology
Article
03 medical and health sciences
Antibiotic resistance
antibacterial activity
multidrug resistance
biofilm inhibition
medicine
Pharmacology (medical)
xanthones
General Pharmacology, Toxicology and Pharmaceutics
biology
Chemistry
Biofilm
quorum sensing
Pathogenic bacteria
biology.organism_classification
Multiple drug resistance
Quorum sensing
030104 developmental biology
Infectious Diseases
Salmonella enterica
efflux pump
Therapeutics. Pharmacology
Efflux
Bacteria
Subjects
Details
- ISSN :
- 20796382
- Volume :
- 10
- Database :
- OpenAIRE
- Journal :
- Antibiotics
- Accession number :
- edsair.doi.dedup.....9a7c1d599cf80676ebae671564d20a25