Evaluation of the Antifungal Activity of the Licania Rigida Leaf Ethanolic Extract against Biofilms Formed by Candida Sp. Isolates in Acrylic Resin Discs

sp. treatment has become a challenge due to the formation of biofilms which favor resistance to conventional antifungals, making the search for new compounds necessary. The objective of this study was to identify the composition of the Benth. leaf ethanolic extract and to verify its antifungal activ...

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Veröffentlicht in:Antibiotics (Basel) 2019-12, Vol.8 (4), p.250
Hauptverfasser: de Freitas, Maria Audilene, Silva Alves, Adryelle Idalina, Andrade, Jacqueline Cosmo, Leite-Andrade, Melyna Chaves, Lucas Dos Santos, Antonia Thassya, Felix de Oliveira, Tatiana, Dos Santos, Franz de Assis G, Silva Buonafina, Maria Daniela, Melo Coutinho, Henrique Douglas, Alencar de Menezes, Irwin Rose, Bezerra Morais-Braga, Maria Flaviana, Pereira Neves, Rejane
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container_end_page
container_issue 4
container_start_page 250
container_title Antibiotics (Basel)
container_volume 8
creator de Freitas, Maria Audilene
Silva Alves, Adryelle Idalina
Andrade, Jacqueline Cosmo
Leite-Andrade, Melyna Chaves
Lucas Dos Santos, Antonia Thassya
Felix de Oliveira, Tatiana
Dos Santos, Franz de Assis G
Silva Buonafina, Maria Daniela
Melo Coutinho, Henrique Douglas
Alencar de Menezes, Irwin Rose
Bezerra Morais-Braga, Maria Flaviana
Pereira Neves, Rejane
description sp. treatment has become a challenge due to the formation of biofilms which favor resistance to conventional antifungals, making the search for new compounds necessary. The objective of this study was to identify the composition of the Benth. leaf ethanolic extract and to verify its antifungal activity against sp. and its biofilms. The composition identification was performed using the ultra-high performance liquid chromatography-quadrupole time-of-flight mass spectrometry (UPLC-QTOF-MS/MS) technique. The antifungal activity of extract and fluconazole against planktonic cells and biofilms was verified through the minimum inhibitory concentration (MIC) following biofilm induction and quantification in acrylic resin discs by reducing tetrazolic salt, with all isolates forming biofilms within 48 h. Six constituents were identified in the extract, and the compounds identified are derivatives from phenolic compounds such as flavonoids (epi) gallocatechin Dimer, epigallocatechin and gallocatechin, Myricetin-O-hexoside, Myricitrin, and Quercetin-O-rhamnoside. The extract reduced biofilm formation in some of the strains analyzed, namely URM5732, INCQS40042, and URM6352. This reduction was also observed in the treatment with fluconazole with some of the analyzed strains. The extract showed significant antifungal and anti-biofilm activities with some of the strains tested.
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Isolates in Acrylic Resin Discs</title><source>MDPI - Multidisciplinary Digital Publishing Institute</source><source>DOAJ Directory of Open Access Journals</source><source>Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals</source><source>PubMed Central</source><source>PubMed Central Open Access</source><creator>de Freitas, Maria Audilene ; Silva Alves, Adryelle Idalina ; Andrade, Jacqueline Cosmo ; Leite-Andrade, Melyna Chaves ; Lucas Dos Santos, Antonia Thassya ; Felix de Oliveira, Tatiana ; Dos Santos, Franz de Assis G ; Silva Buonafina, Maria Daniela ; Melo Coutinho, Henrique Douglas ; Alencar de Menezes, Irwin Rose ; Bezerra Morais-Braga, Maria Flaviana ; Pereira Neves, Rejane</creator><creatorcontrib>de Freitas, Maria Audilene ; Silva Alves, Adryelle Idalina ; Andrade, Jacqueline Cosmo ; Leite-Andrade, Melyna Chaves ; Lucas Dos Santos, Antonia Thassya ; Felix de Oliveira, Tatiana ; Dos Santos, Franz de Assis G ; Silva Buonafina, Maria Daniela ; Melo Coutinho, Henrique Douglas ; Alencar de Menezes, Irwin Rose ; Bezerra Morais-Braga, Maria Flaviana ; Pereira Neves, Rejane</creatorcontrib><description>sp. treatment has become a challenge due to the formation of biofilms which favor resistance to conventional antifungals, making the search for new compounds necessary. The objective of this study was to identify the composition of the Benth. leaf ethanolic extract and to verify its antifungal activity against sp. and its biofilms. The composition identification was performed using the ultra-high performance liquid chromatography-quadrupole time-of-flight mass spectrometry (UPLC-QTOF-MS/MS) technique. The antifungal activity of extract and fluconazole against planktonic cells and biofilms was verified through the minimum inhibitory concentration (MIC) following biofilm induction and quantification in acrylic resin discs by reducing tetrazolic salt, with all isolates forming biofilms within 48 h. Six constituents were identified in the extract, and the compounds identified are derivatives from phenolic compounds such as flavonoids (epi) gallocatechin Dimer, epigallocatechin and gallocatechin, Myricetin-O-hexoside, Myricitrin, and Quercetin-O-rhamnoside. The extract reduced biofilm formation in some of the strains analyzed, namely URM5732, INCQS40042, and URM6352. This reduction was also observed in the treatment with fluconazole with some of the analyzed strains. 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Isolates in Acrylic Resin Discs</title><title>Antibiotics (Basel)</title><addtitle>Antibiotics (Basel)</addtitle><description>sp. treatment has become a challenge due to the formation of biofilms which favor resistance to conventional antifungals, making the search for new compounds necessary. The objective of this study was to identify the composition of the Benth. leaf ethanolic extract and to verify its antifungal activity against sp. and its biofilms. The composition identification was performed using the ultra-high performance liquid chromatography-quadrupole time-of-flight mass spectrometry (UPLC-QTOF-MS/MS) technique. The antifungal activity of extract and fluconazole against planktonic cells and biofilms was verified through the minimum inhibitory concentration (MIC) following biofilm induction and quantification in acrylic resin discs by reducing tetrazolic salt, with all isolates forming biofilms within 48 h. 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subjects Acrylic resins
Antifungal activity
Antifungal agents
Antimicrobial agents
Biofilms
Candida
Candida krusei
Chromatography
Composition
Control
Dimers
Enzymes
Evaluation
Extracellular matrix
Flavonoids
Fluconazole
Fungicides
Health aspects
Herbal medicine
High performance liquid chromatography
Infections
Isoflavones
Leaves
Liquid chromatography
Magnoliopsida
Mass spectrometry
Mass spectroscopy
Medicinal plants
Microbial mats
Microorganisms
Minimum inhibitory concentration
Pathogens
Phenolic compounds
Phenols
Planktonic cells
Quadrupoles
Quercetin
Scientific imaging
Spectroscopy
Time
title Evaluation of the Antifungal Activity of the Licania Rigida Leaf Ethanolic Extract against Biofilms Formed by Candida Sp. Isolates in Acrylic Resin Discs
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