Efficacy of medicinal essential oils against pathogenic Malassezia sp. isolates
Journal de Mycologie Médicale, ISSN: 1156-5233, Vol: 26, Issue: 1, Page: 28-34
2016
- 41Citations
- 78Captures
- 1Mentions
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Metrics Details
- Citations41
- Citation Indexes41
- 41
- CrossRef32
- Captures78
- Readers78
- 78
- Mentions1
- Blog Mentions1
- 1
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Article Description
The purposes of this study were to evaluate the distribution pattern and population size of Malassezia species in dogs with atopic dermatitis (AD) and the inhibitory efficacy of Zataria multiflora, Thymus kotschyanus, Mentha spicata, Artemisia sieberi, Rosmarinus officinalis and Heracleum persicum essential oils against pathogenic Malassezia isolates. The samples were collected from 5 different anatomical sites of 33 atopic dogs and cultured onto modified Dixon agar (MDA) and Sabouraud dextrose agar (SDA) media. The essential oil extraction was performed by steam distillation using Clevenger system. Anti- Malassezia efficacy of medicinal essential oils and standard drugs was evaluated using broth microdilution method. A total of 103 yeast colonies were isolated from dogs with AD. Eight different Malassezia species were identified as follows: Malassezia pachydermatis (81.4%), M. globosa (7.8%), M. restricta (3.9%), M. sloofiae (2.9%), M. furfur (1%), M. nana (1%), M. obtusa (1%) and M. sympodialis (1%). The most and least infected sites were: anal (21.2%) and ear (10.6%) respectively. M. pachydermatis was the most frequent Malassezia species isolated from both skin and mucosa of dogs with AD. Antifungal susceptibility test revealed the inhibitory efficacy of essential oils on pathogenic Malassezia isolates with minimum inhibitory concentration (MIC 90 ) values ranging from 30 to 850 μg/mL. Among the tested oils, Z. multiflora and T. kotschyanus exhibited the highest inhibitory effects ( P < 0.05). The essential oils of Z. multiflora and T. kotschyanus showed strong antifungal activity against pathogenic Malassezia species tested. Les buts de cette étude étaient d’évaluer la distribution corporelle et l’abondance d’espèces de Malassezia chez des chiens ayant une dermatite atopique (DA) et l’effet inhibiteur des huiles essentielles de Zataria multiflore, de Thymus kotschyanus, de Mentha spicata, d’ Artemisia sieberi, de Rosmarinus officinalis et de Heracleum persicum contre des isolats de Malassezia pathogènes. Les échantillons ont été recueillis de 5 sites anatomiques différents chez 33 chiens atopiques et cultivés sur gélose Dixon modifiée (MDA) et sur gélose dextrose de Sabouraud (SDA). L’extraction des huiles essentielles a été faite par distillation à la vapeur en utilisant le système de Clevenger. L’effet d’anti- Malassezia d’huiles essentielles médicinales et de médicaments de référence a été évalué en utilisant la méthode de microdilution en milieu liquide. Cent trois colonies de levures ont été isolées chez des chiens avec une DA. Huit espèces différentes de Malassezia ont été identifiées comme suit : Malassezia pachydermatis (81,4 %), M. globosa (7,8 %), M. restricta (3,9 %), M. sloofiae (2,9 %), M. furfur (1 %), M. nana (1 %), M. obtusa (1 %) et M. sympodialis (1 %). Les sites les plus et les moins infectés ont été l’anus (21,2 %) et l’oreille (10,6 %), respectivement. M. pachydermatis était l’espèce de Malassezia la plus fréquemment isolée tant de la peau que des muqueuses des chiens avec une AD. L’étude de la sensibilité antifongique a révélé un effet inhibiteur des huiles essentielles sur Malassezia avec une concentration inhibitrice minimale (MIC 90 ) entre 30 et 850 μg/mL. Parmi les huiles évaluées, Z. multiflore et T. kotschyanus ont montré les plus hauts effets inhibiteurs ( p < 0,05). Les huiles essentielles de Z. multiflore et de T. kotschyanus ont montré une forte activité antifongique contre les espèces de Malassezia évaluées.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/S1156523315002139; http://dx.doi.org/10.1016/j.mycmed.2015.10.012; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84961179754&origin=inward; http://www.ncbi.nlm.nih.gov/pubmed/26597143; https://linkinghub.elsevier.com/retrieve/pii/S1156523315002139; https://dx.doi.org/10.1016/j.mycmed.2015.10.012
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