Antimicrobial, modulatory, and antibiofilm activity of tt-farnesol on bacterial and fungal strains of importance to human health.
Bioorg Med Chem Lett
; 47: 128192, 2021 09 01.
Article
in En
| MEDLINE
| ID: mdl-34118413
ABSTRACT
In this study, we analyzed the antimicrobial, antibiofilm, and modulatory activities of trans-trans-farnesol (tt-farnesol). The minimum inhibitory concentration (MIC) of this sesquiterpene was evaluated against 31 Gram-positive and Gram-negative bacterial strains and 4 species of the genus Candida. Furthermore, we examined its inhibitory action on biofilm production as well as antibiotic modulation. Only Gram-positive species presented susceptibility to tt-farnesol (MIC ranging from 8 µg/mL to 128 µg/mL). No synergistic or antagonistic effects were observed between tt-farnesol (1/4 and 1/8 of MIC) and first-choice antibiotics against multidrug resistant strains. However, the modulatory action of tt-farnesol (1/2 and 1/4 of the MIC) decreased 8 × MIC of non-inhibitory ß-lactam antibiotic against a Methicillin-resistant strain. In the antibiofilm assay, tt-farnesol inhibited biofilm formation, especially in Methicillin-resistant Staphylococcus aureus (MRSA) strains, at concentrations ranging from 2 µg/mL to 128 µg/mL. Additionally, in the molecular docking study, the tt-farnesol molecule demonstrated a remarkable binding affinity with important proteins involved in the biofilm production, such as IcaA and Srt proteins. The antimicrobial action of tt-farnesol on Streptococcus pyogenes and Streptococcus agalactiae strains was evaluated for the first time, presenting an MIC of 16 µg/mL for both strains. Our findings reveal the antibacterial, antibiofilm, and modulatory potential of tt-farnesol to aid in the fight against infectious processes.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Biofilms
/
Gram-Negative Bacteria
/
Gram-Positive Bacteria
/
Anti-Bacterial Agents
Limits:
Humans
Language:
En
Journal:
Bioorg Med Chem Lett
Journal subject:
BIOQUIMICA
/
QUIMICA
Year:
2021
Document type:
Article
Affiliation country:
Brazil