Evaluation of antifungal activity of standardized extract of Salvia rhytidea Benth. (Lamiaceae) against various Candida isolates

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• 作者：S. Salari^a ; ^b ; ^{sa_salari@kmu.ac.ir} ; T. Bakhshi^b ; F. Sharififar^c ; A. Naseri^d ; P. Ghasemi Nejad Almani^b
• 关键词：Antifungal susceptibility ; Salvia rhytidea ; Candida ; Broth microdilution method
• 刊名：Journal de Mycologie Médicale / Journal of Medical Mycology
• 出版年：2016
• 出版时间：December 2016
• 年：2016
• 卷：26
• 期：4
• 页码：323-330
• 全文大小：528 K
• 卷排序：26

文摘

Salvia species have long been described in traditional medicine for various indications. Owing to the widespread use of this genus by ethnic populations, especially for various infections ranging from skin disease to gastrointestinal disorders, we were encouraged to determine whether Salvia rhytidea could be effective against fungal infections. Given the increased incidence of candidiasis in the past decade, limits on the use of antifungal drugs, emergence of azole-resistant Candida species and increased incidence of treatment failures, it is necessary to identify a novel agent with antifungal properties. Aim of the study was to evaluate the antifungal properties of S. rhytidea against various Candida isolates.Materials and methodsIn this study, at first rosmarinic acid content of plant extract was determined. A total of 96 Candida isolates were tested, including the following species: Candida albicans (n = 42), Candida glabrata (n = 16), Candida tropicalis (n = 11), Candida krusei (n = 9), Candida parapsilosis (n = 9), Candida lusitaniae (n = 7) and Candida guilliermondii (n = 2). The in vitro antifungal activity of methanolic extracts of S. rhytidea Benth. was evaluated against Candida isolates and compared with that of the standard antifungal drug nystatin by using a broth microdilution method, according to CLSI.ResultsPhytochemical screening results showed that the methanolic extract of S. rhytidea Benth. was rich in flavonoids and tannins. The minimal inhibitory concentration (MIC) and minimum fungicidal concentration (MFC) values of S. rhytidea Benth. ranged from 3.125 to > 100 μg/ml and 6.25 to > 100 μg/ml respectively. The growth inhibition value displayed that C. tropicalis, C. krusei and C. albicans isolates were most susceptible to S. rhytidea.ConclusionsFindings show that S. rhytidea possesses an antifungal effect against Candida isolates.