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The Inhibition of Non-albicans Candida Species and Uncommon Yeast Pathogens by Selected Essential Oils and Their Major Compounds.
Molecules. 2021 Aug 15; 26(16)M

Abstract

The epidemiology of yeast infections and resistance to available antifungal drugs are rapidly increasing, and non-albicans Candida species and rare yeast species are increasingly emerging as major opportunistic pathogens. In order to identify new strategies to counter the threat of antimicrobial resistant microorganisms, essential oils (EOs) have become an important potential in the treatment of fungal infections. EOs and their bioactive pure compounds have been found to exhibit a wide range of remarkable biological activities. We investigated the in vitro antifungal activity of nine commercial EOs such as Thymus vulgaris (thyme red), Origanum vulgare (oregano), Lavandula vera (lavender), Pinus sylvestris (pine), Foeniculum vulgare (fennel), Melissa officinalis (lemon balm), Salvia officinalis (sage), Eugenia caryophyllata (clove) and Pelargonium asperum (geranium), and some of their main components (α-pinene, carvacrol, citronellal, eugenol, γ-terpinene, linalool, linalylacetate, terpinen-4-ol, thymol) against non-albicans Candida strains and uncommon yeasts. The EOs were analyzed by GC-MS, and their antifungal properties were evaluated by minimum inhibitory concentration and minimum fungicidal concentration parameters, in accordance with CLSI guidelines, with some modifications for EOs. Pine exhibited strong antifungal activity against the selected non-albicans Candida isolates and uncommon yeasts. In addition, lemon balm EOs and α-pinene exhibited strong antifungal activity against the selected non-albicans Candida yeasts. Thymol inhibited the growth of all uncommon yeasts. These data showed a promising potential application of EOs as natural adjuvant for management of infections by emerging non-albicans Candida species and uncommon pathogenic yeasts.

Authors+Show Affiliations

Department Public Health and Pediatrics, Microbiology Division, University of Turin, 10126 Turin, Italy.Department Public Health and Pediatrics, Microbiology Division, University of Turin, 10126 Turin, Italy.Department of Veterinary Sciences, University of Turin, 10095 Turin, Italy.Laboratory of Microbiology and Virology, Amedeo di Savoia Hospital, ASL Città di Torino, 10149 Turin, Italy.Department Public Health and Pediatrics, Microbiology Division, University of Turin, 10126 Turin, Italy.Laboratory of Microbiology and Virology, Amedeo di Savoia Hospital, ASL Città di Torino, 10149 Turin, Italy.Department Public Health and Pediatrics, Microbiology Division, University of Turin, 10126 Turin, Italy.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

34443525

Citation

Mandras, Narcisa, et al. "The Inhibition of Non-albicans Candida Species and Uncommon Yeast Pathogens By Selected Essential Oils and Their Major Compounds." Molecules (Basel, Switzerland), vol. 26, no. 16, 2021.
Mandras N, Roana J, Scalas D, et al. The Inhibition of Non-albicans Candida Species and Uncommon Yeast Pathogens by Selected Essential Oils and Their Major Compounds. Molecules. 2021;26(16).
Mandras, N., Roana, J., Scalas, D., Del Re, S., Cavallo, L., Ghisetti, V., & Tullio, V. (2021). The Inhibition of Non-albicans Candida Species and Uncommon Yeast Pathogens by Selected Essential Oils and Their Major Compounds. Molecules (Basel, Switzerland), 26(16). https://doi.org/10.3390/molecules26164937
Mandras N, et al. The Inhibition of Non-albicans Candida Species and Uncommon Yeast Pathogens By Selected Essential Oils and Their Major Compounds. Molecules. 2021 Aug 15;26(16) PubMed PMID: 34443525.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - The Inhibition of Non-albicans Candida Species and Uncommon Yeast Pathogens by Selected Essential Oils and Their Major Compounds. AU - Mandras,Narcisa, AU - Roana,Janira, AU - Scalas,Daniela, AU - Del Re,Simonetta, AU - Cavallo,Lorenza, AU - Ghisetti,Valeria, AU - Tullio,Vivian, Y1 - 2021/08/15/ PY - 2021/07/27/received PY - 2021/08/12/revised PY - 2021/08/13/accepted PY - 2021/8/27/entrez PY - 2021/8/28/pubmed PY - 2021/9/25/medline KW - antifungal activity KW - compounds KW - essential oils KW - non-albicans Candida species KW - uncommon yeasts JF - Molecules (Basel, Switzerland) JO - Molecules VL - 26 IS - 16 N2 - The epidemiology of yeast infections and resistance to available antifungal drugs are rapidly increasing, and non-albicans Candida species and rare yeast species are increasingly emerging as major opportunistic pathogens. In order to identify new strategies to counter the threat of antimicrobial resistant microorganisms, essential oils (EOs) have become an important potential in the treatment of fungal infections. EOs and their bioactive pure compounds have been found to exhibit a wide range of remarkable biological activities. We investigated the in vitro antifungal activity of nine commercial EOs such as Thymus vulgaris (thyme red), Origanum vulgare (oregano), Lavandula vera (lavender), Pinus sylvestris (pine), Foeniculum vulgare (fennel), Melissa officinalis (lemon balm), Salvia officinalis (sage), Eugenia caryophyllata (clove) and Pelargonium asperum (geranium), and some of their main components (α-pinene, carvacrol, citronellal, eugenol, γ-terpinene, linalool, linalylacetate, terpinen-4-ol, thymol) against non-albicans Candida strains and uncommon yeasts. The EOs were analyzed by GC-MS, and their antifungal properties were evaluated by minimum inhibitory concentration and minimum fungicidal concentration parameters, in accordance with CLSI guidelines, with some modifications for EOs. Pine exhibited strong antifungal activity against the selected non-albicans Candida isolates and uncommon yeasts. In addition, lemon balm EOs and α-pinene exhibited strong antifungal activity against the selected non-albicans Candida yeasts. Thymol inhibited the growth of all uncommon yeasts. These data showed a promising potential application of EOs as natural adjuvant for management of infections by emerging non-albicans Candida species and uncommon pathogenic yeasts. SN - 1420-3049 UR - https://www.unboundmedicine.com/medline/citation/34443525/The_Inhibition_of_Non_albicans_Candida_Species_and_Uncommon_Yeast_Pathogens_by_Selected_Essential_Oils_and_Their_Major_Compounds_ L2 - https://www.mdpi.com/resolver?pii=molecules26164937 DB - PRIME DP - Unbound Medicine ER -