Data/hora: 09/06/2024 14:44:11

Provedor de dados: | 58
País: | Brazil
Título: | Cytotoxicity and anti-Sporothrix brasiliensis activity of the Origanum majorana Linn. oil
Autores: | Waller,Stefanie Bressan; Madrid,Isabel Martins; Ferraz,Vanny; Picoli,Tony; Cleff,Marlete Brum; de Faria,Renata Osório; Meireles,Mário Carlos Araújo; de Mello,João Roberto Braga.
Data: | 2016-12-01
Ano: | 2016
Palavras-chave: | Sporotrichosis; Sporothrix schenckii complex; Antifungal resistance; Marjoram; Lamiaceae.
Resumo: | Abstract The study aimed to evaluate the anti-Sporothrix sp. activity of the essential oil of Origanum majorana Linn. (marjoram), its chemical analysis, and its cytotoxic activity. A total of 18 fungal isolates of Sporothrix brasiliensis (n: 17) from humans, dogs and cats, and a standard strain of Sporothrix schenckii (n: 1) were tested using the broth microdilution technique (Clinical and Laboratory Standard Institute - CLSI M27-A3) and the results were expressed in minimal inhibitory concentration (MIC) and minimal fungicidal concentration (MFC). The MIC50 and MIC90 of itraconazole against S. brasiliensis were 2 µg/mL and 8 µg/mL, respectively, and the MFC50 and MFC90 were 2 µg/mL and &gt;16 µg/mL, respectively, with three S. brasiliensis isolates resistant to antifungal. S. schenckii was sensitive at MIC of 1 µg/mL and MFC of 8 µg/mL. For the oil of O. majorana L., all isolates were susceptible to MIC of ≤2.25-9 mg/mL and MFC of ≤2.25-18 mg/mL. The MIC50 and MIC90 were ≤2.25 mg/mL and 4.5 mg/mL, respectively, and the MFC50/90 values were twice more than the MIC. Twenty-two compounds were identified by gas chromatography with a flame ionization detector (CG-FID) and 1,8-cineole and 4-terpineol were the majority. Through the colorimetric (MTT) assay, the toxicity was observed in 70-80% of VERO cells between 0.078 and 5 mg/mL. For the first time, the study demonstrated the satisfactory in vitro anti-Sporothrix sp. activity of marjoram oil and further studies are needed to ensure its safe and effective use.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822016000400896
Editor: | Sociedade Brasileira de Microbiologia
Relação: | 10.1016/j.bjm.2016.07.017
Formato: | text/html
Fonte: | Brazilian Journal of Microbiology  v.47 n.4 2016
Fonte: | info:eu-repo/semantics/openAccess