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Machado KE, Filho VC, Cruz RCB, Meyre-Silva C, Cruz AB. Antifungal Activity of Eugenia umbelliflora against Dermatophytes. Nat Prod Commun 2009. [DOI: 10.1177/1934578x0900400904] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Antifungal activities of Eugenia umbelliflora Berg. (Myrtaceae) were tested in vitro against a panel of standard and clinical isolates of human fungal pathogens (dermatophytes and opportunistic saprobes). Methanol extracts of leaves and fruits of E. umbelliflora were separately prepared and partitioned, to yield dichloromethane (DCM), ethyl acetate (EtOAc) and aqueous fractions (Aq). Three compounds (1-3) were obtained from the DCM extract using chromatographic procedures. Antifungal assays were performed using agar dilution techniques. Both extracts (fruits and leaves), their DCM and EtOAc fractions, and compound 2 (betulin and betulinic acid) presented selective antifungal activity against dermatophytes (Epidermophyton floccosum, Microsporum canis, Microsporum gypseum, Trichophyton rubrum, Trichophyton mentagrophytes), with MIC values between 200 and 1000 μg/mL, and interestingly, inhibited 4/5 species with MIC values of ≤500 ≤g/mL. The aqueous fractions of fruits and leaves, and compounds 1 (α, β amyrin) and 3 (taraxerol) were inactive up to the maximum concentrations tested (1000 μg/mL).
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Affiliation(s)
- Karina E. Machado
- Programa de Mestrado em Ciências Farmacêuticas/CCS, Universidade do Vale do Itajaí (UNIVALI), Rua Uruguai, 458, 88.302-202, Itajaí, SC, Brazil
- Núcleo de Investigações Químico-Farmacêuticas (NIQFAR), Universidade do Vale do Itajaí (UNIVALI), Rua Uruguai, 458, 88.302-202, Itajaí, SC, Brazil
| | - Valdir Cechinel Filho
- Programa de Mestrado em Ciências Farmacêuticas/CCS, Universidade do Vale do Itajaí (UNIVALI), Rua Uruguai, 458, 88.302-202, Itajaí, SC, Brazil
- Núcleo de Investigações Químico-Farmacêuticas (NIQFAR), Universidade do Vale do Itajaí (UNIVALI), Rua Uruguai, 458, 88.302-202, Itajaí, SC, Brazil
| | - Rosana C. B. Cruz
- Núcleo de Investigações Químico-Farmacêuticas (NIQFAR), Universidade do Vale do Itajaí (UNIVALI), Rua Uruguai, 458, 88.302-202, Itajaí, SC, Brazil
| | - Christiane Meyre-Silva
- Núcleo de Investigações Químico-Farmacêuticas (NIQFAR), Universidade do Vale do Itajaí (UNIVALI), Rua Uruguai, 458, 88.302-202, Itajaí, SC, Brazil
| | - Alexandre Bella Cruz
- Programa de Mestrado em Ciências Farmacêuticas/CCS, Universidade do Vale do Itajaí (UNIVALI), Rua Uruguai, 458, 88.302-202, Itajaí, SC, Brazil
- Núcleo de Investigações Químico-Farmacêuticas (NIQFAR), Universidade do Vale do Itajaí (UNIVALI), Rua Uruguai, 458, 88.302-202, Itajaí, SC, Brazil
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