Photodynamic inactivation of Streptococcus mutans by curcumin in combination with EDTA
Copyright © 2020 The Academy of Dental Materials. Published by Elsevier Inc. All rights reserved..
OBJECTIVE: This study aimed to test the efficacy of photodynamic inactivation (PDI) mediated by curcumin with EDTA against Streptococcus mutans in planktonic suspension using blue LED light.
METHODS: Antibacterial activity of curcumin and EDTA was evaluated by determination of their minimal inhibitory concentration (MIC) and minimal bactericidal concentration (MBC). The fractional inhibitory concentration index (FICI) was used to estimate the synergistic effect of various combination ratios of curcumin and EDTA against S. mutans. Cultures of S. mutans (18 h, 37 °C, 5% C02) were prepared to test the effect of curcumin-mediated PDI (50 μM and 500 μM) with or without 0.4% EDTA and 40 s of light-activation with blue light. EDTA and each concentration of curcumin were also tested individually. Chlorhexidine (0.2%), was used as positive control. Planktonic suspensions were also analyzed by viable colony counts (VCC), confocal laser scanning microscopy (CLSM), transmission electron microscopy (TEM), and polymerase chain reaction (PCR).
RESULTS: The MIC values of curcumin and EDTA were 5 mM and 0.125% respectively. FICI showed a synergistic interaction between curcumin and EDTA. All the combinations with curcumin and blue LED light resulted in a complete inactivation of the S. mutans and CLSM confirms these results, TEM showed morphological changes produced by the PDI. No damage on DNA structure was detected by PCR.
SIGNIFICANCE: Curcumin-mediated PDI with EDTA using a blue light, shows a strong inhibitory effect against S. mutans in planktonic culture. Because of the unspecific target mechanism, it could be a promising technique for disinfection of dental tissues.
Medienart: |
E-Artikel |
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Erscheinungsjahr: |
2021 |
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Erschienen: |
2021 |
Enthalten in: |
Zur Gesamtaufnahme - volume:37 |
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Enthalten in: |
Dental materials : official publication of the Academy of Dental Materials - 37(2021), 1 vom: 01. Jan., Seite e1-e14 |
Sprache: |
Englisch |
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Beteiligte Personen: |
Nima, Gabriel [VerfasserIn] |
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Links: |
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Anmerkungen: |
Date Completed 23.04.2021 Date Revised 23.04.2021 published: Print-Electronic Citation Status MEDLINE |
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doi: |
10.1016/j.dental.2020.09.015 |
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funding: |
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Förderinstitution / Projekttitel: |
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PPN (Katalog-ID): |
NLM317122029 |
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520 | |a Copyright © 2020 The Academy of Dental Materials. Published by Elsevier Inc. All rights reserved. | ||
520 | |a OBJECTIVE: This study aimed to test the efficacy of photodynamic inactivation (PDI) mediated by curcumin with EDTA against Streptococcus mutans in planktonic suspension using blue LED light | ||
520 | |a METHODS: Antibacterial activity of curcumin and EDTA was evaluated by determination of their minimal inhibitory concentration (MIC) and minimal bactericidal concentration (MBC). The fractional inhibitory concentration index (FICI) was used to estimate the synergistic effect of various combination ratios of curcumin and EDTA against S. mutans. Cultures of S. mutans (18 h, 37 °C, 5% C02) were prepared to test the effect of curcumin-mediated PDI (50 μM and 500 μM) with or without 0.4% EDTA and 40 s of light-activation with blue light. EDTA and each concentration of curcumin were also tested individually. Chlorhexidine (0.2%), was used as positive control. Planktonic suspensions were also analyzed by viable colony counts (VCC), confocal laser scanning microscopy (CLSM), transmission electron microscopy (TEM), and polymerase chain reaction (PCR) | ||
520 | |a RESULTS: The MIC values of curcumin and EDTA were 5 mM and 0.125% respectively. FICI showed a synergistic interaction between curcumin and EDTA. All the combinations with curcumin and blue LED light resulted in a complete inactivation of the S. mutans and CLSM confirms these results, TEM showed morphological changes produced by the PDI. No damage on DNA structure was detected by PCR | ||
520 | |a SIGNIFICANCE: Curcumin-mediated PDI with EDTA using a blue light, shows a strong inhibitory effect against S. mutans in planktonic culture. Because of the unspecific target mechanism, it could be a promising technique for disinfection of dental tissues | ||
650 | 4 | |a Journal Article | |
650 | 4 | |a Research Support, Non-U.S. Gov't | |
650 | 4 | |a Curcumin | |
650 | 4 | |a Dental curing lights | |
650 | 4 | |a Disinfection | |
650 | 4 | |a Photodynamic therapy | |
650 | 4 | |a Photosensitizing agents | |
650 | 4 | |a Streptococcus mutans | |
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700 | 1 | |a Alves, Lívia A |e verfasserin |4 aut | |
700 | 1 | |a Mattos-Graner, Renata O |e verfasserin |4 aut | |
700 | 1 | |a Giannini, Marcelo |e verfasserin |4 aut | |
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