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Abstract Title:

Chemical Characterization of Lavandula dentata Essential Oil Cultivated in Chile and Its Antibiofilm Effect against Candida albicans.

Abstract Source:

Planta Med. 2020 Jul 14. Epub 2020 Jul 14. PMID: 32663893

Abstract Author(s):

Andrea Müller-Sepúlveda, Camila Cid Chevecich, José A Jara, Carolina Belmar, Pablo Sandoval, Rocío Santander Meyer, Raúl Quijada, Sidnei Moura, Rodrigo López-Muñoz, Mario Díaz-Dosque, Alfredo Molina-Berríos

Article Affiliation:

Andrea Müller-Sepúlveda

Abstract:

is the most common human fungal pathogen, and with the increase in resistance rates worldwide, it is necessary to search for new pharmacological alternatives.L. essential oil is recognized as having antimicrobial properties. However, its effect against fungal biofilms has been poorly described.-related infections involve the development of biofilms, which are highly resistant to conventional antifungals. In this work, we evaluated the antibiofilm effect ofL. essential oil againstFirst, we characterized the essential oil by gas chromatography-mass spectrometry. The antifungal effect onreference strains was evaluated by a disk diffusion assay and the minimal inhibitory concentration was obtained through a microdilution assay. The effect of the essential oil on the adhesion ability ofwas determined through a crystal violet assay, and morphogenesis inhibition was assessed by light microscopy. The effect of the essential oil on the microarchitecture of biofilms was evaluated through scanning electron microscopy. Finally, the antibiofilm effect was evaluated through an adapted biofilm scratch assay and XTT viability assay. The main constituent of the essential oil was the monoterpenoid eucalyptol (60%). The essential oil presented minimal inhibitory concentrations of 156 and 130 µg/mL against two strains assayed. This minimal inhibitory concentration inhibited adhesion, morphogenesis, biofilm formation, altered microarchitecture, and decreased the viability of established biofilms formed on abiotic surfaces for both strains assayed. This study demonstrates that the essential oil fromcould be a promising treatment againstbiofilms.

Study Type : In Vitro Study

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