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Thassya Lucas Dos Santos, Antonia; Pereira Carneiro, Joara Nályda; Pereira da Cruz, Rafael; Lima Sales, Débora; Cosmo Andrade, Jacqueline; de Oliveira Almeida, Waltécio; Martins da Costa, José Galberto; Riceli Vasconcelos Ribeiro, Paulo; Sousa de Brito, Edy; Alves Batista, Francisco Lucas; Alves Magalhães, Francisco Ernani; Iriti, Marcello; Morais-Braga, Maria Flaviana Bezerra; Coutinho, Henrique Douglas Melo
Antibiotics (Basel), 11/2019, Letnik: 8, Številka: 4Journal Article
The aim of this study was to identify and evaluate the chemical compositions and effects of the leaf and root hydroalcoholic extracts (HELST and HERST) against different strains of . Chemical analysis was performed by Ultra-Performance Liquid Chromatography Coupled to Quadrupole/Time of Flight System (UPLC-MS-ESI-QTOF). The Inhibitory Concentration of 50% of the growth (IC as well as the intrinsic and combined action of the extracts with the antifungal fluconazole (FCZ) were determined by the microdilution method while the minimum fungicidal concentrations (MFCs) and the effect on fungal morphological transitions were analyzed by subculture and in humid chambers, respectively. From the preliminary phytochemical analysis, the phenols and flavonoids were the most abundant. The intrinsic IC values for HELST ranged from 5716.3 to 7805.8 µg/mL and from 6175.4 to 51070.9 µg/mL for the HERST, whereas the combination of the extracts with fluconazole presented IC values from 2.65 to 278.41 µg/mL. The MFC of the extracts, individually, for all the tested strains was ≥16384 µg/mL. When fluconazole was combined with each extract, the MFC against CA URM 5974 was reduced (HELST: 2048 and HERST: 4096 µg/mL). Synergism was observed against standard (CA) and (CT) strains and with the root extract against the CT isolate. The leaf extract inhibited the morphological transition of all strains while the root extract inhibited only CT strains.
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in: SICRIS
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