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Bueno-Silva B, Parma-Garcia J, Frigo L, Suárez LJ, Macedo TT, Uyeda FH, Melo MARDC, Sacco R, Mourão CF, Feres M, Shibli JA, Figueiredo LC. Antimicrobial Activity of Methylene Blue Associated with Photodynamic Therapy: In Vitro Study in Multi-Species Oral Biofilm. Pathogens 2024; 13:342. [PMID: 38668297 PMCID: PMC11054395 DOI: 10.3390/pathogens13040342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2024] [Revised: 04/11/2024] [Accepted: 04/18/2024] [Indexed: 04/29/2024] Open
Abstract
The control of infectious diseases caused by biofilms is a continuing challenge for researchers due to the complexity of their microbial structures and therapeutic implications. Photodynamic therapy as an adjunctive anti-infective treatment has been described as a possible valid approach but has not been tested in polymicrobial biofilm models. This study evaluated the effect of photodynamic therapy in vitro with methylene blue (MB) 0.01% and red LEDs (λ = 660 nm, power density ≈ 330 mW/cm2, 2 mm distance from culture) on the metabolic activity and composition of a multispecies subgingival biofilm. Test Groups LED and MB + LED showed a more significant reduction in metabolic activity than the non-LED application group (~50 and 55%, respectively). Groups LED and MB equally affected (more than 80%) the total bacterial count in biofilms. No differences were noted in the bacterial biofilm composition between the groups. In vitro LED alone or the MB + LED combination reduced the metabolic activity of bacteria in polymicrobial biofilms and the total subgingival biofilm count.
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Affiliation(s)
- Bruno Bueno-Silva
- Department of Periodontology, Dental Research Division, Guarulhos University, Guarulhos 07023-070, Brazil; (B.B.-S.); (J.P.-G.); (L.F.); (L.J.S.); (M.F.); (J.A.S.); (L.C.F.)
- Faculdade de Odontologia de Piracicaba, Universidade Estadual de Campinas, Piracicaba 13414-903, Brazil
| | - Javier Parma-Garcia
- Department of Periodontology, Dental Research Division, Guarulhos University, Guarulhos 07023-070, Brazil; (B.B.-S.); (J.P.-G.); (L.F.); (L.J.S.); (M.F.); (J.A.S.); (L.C.F.)
| | - Lucio Frigo
- Department of Periodontology, Dental Research Division, Guarulhos University, Guarulhos 07023-070, Brazil; (B.B.-S.); (J.P.-G.); (L.F.); (L.J.S.); (M.F.); (J.A.S.); (L.C.F.)
- Faculdade de Odontologia da Associação Paulista de Cirurgiões Dentistas (FAOA), São Paulo 02011-000, Brazil
| | - Lina J. Suárez
- Department of Periodontology, Dental Research Division, Guarulhos University, Guarulhos 07023-070, Brazil; (B.B.-S.); (J.P.-G.); (L.F.); (L.J.S.); (M.F.); (J.A.S.); (L.C.F.)
- Departamento de Ciencias Básicas y Medicina Oral, Facultad de Odontología, Universidad Nacional de Colombia, Cra 45 # 26-85, Bogotá 11001, Colombia
| | - Tatiane Tiemi Macedo
- Department of Periodontology, Dental Research Division, Guarulhos University, Guarulhos 07023-070, Brazil; (B.B.-S.); (J.P.-G.); (L.F.); (L.J.S.); (M.F.); (J.A.S.); (L.C.F.)
| | - Fábio Hideaki Uyeda
- Department of Periodontology, Dental Research Division, Guarulhos University, Guarulhos 07023-070, Brazil; (B.B.-S.); (J.P.-G.); (L.F.); (L.J.S.); (M.F.); (J.A.S.); (L.C.F.)
| | - Marcelo Augusto Ruiz da Cunha Melo
- Department of Periodontology, Dental Research Division, Guarulhos University, Guarulhos 07023-070, Brazil; (B.B.-S.); (J.P.-G.); (L.F.); (L.J.S.); (M.F.); (J.A.S.); (L.C.F.)
| | - Roberto Sacco
- Department of Oral Surgery, Faculty of Dentistry, Oral & Craniofacial Sciences, King’s College London, London SE1 9SP, UK
| | - Carlos Fernando Mourão
- Department of Periodontology, Dental Research Division, Tuft University School of Dental Medicine, Boston, MA 02111, USA;
| | - Magda Feres
- Department of Periodontology, Dental Research Division, Guarulhos University, Guarulhos 07023-070, Brazil; (B.B.-S.); (J.P.-G.); (L.F.); (L.J.S.); (M.F.); (J.A.S.); (L.C.F.)
- Department of Oral Medicine, Infection, and Immunity, Division of Periodontology, Harvard School of Dental Medicine, Boston, MA 02115, USA
| | - Jamil Awad Shibli
- Department of Periodontology, Dental Research Division, Guarulhos University, Guarulhos 07023-070, Brazil; (B.B.-S.); (J.P.-G.); (L.F.); (L.J.S.); (M.F.); (J.A.S.); (L.C.F.)
| | - Luciene Cristina Figueiredo
- Department of Periodontology, Dental Research Division, Guarulhos University, Guarulhos 07023-070, Brazil; (B.B.-S.); (J.P.-G.); (L.F.); (L.J.S.); (M.F.); (J.A.S.); (L.C.F.)
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Ashtiani AS, Jafari Z, Chiniforush N, Afrasiabi S. In vitro antibiofilm effect of different irradiation doses in infected root canal model. Photodiagnosis Photodyn Ther 2024; 46:104053. [PMID: 38499277 DOI: 10.1016/j.pdpdt.2024.104053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2024] [Revised: 02/25/2024] [Accepted: 03/15/2024] [Indexed: 03/20/2024]
Abstract
BACKGROUND Eradication of endodontic biofilms from the infected root canal system is still the main concern in endodontics. In this study, the role of the power density parameter in the efficacy of antimicrobial photodynamic therapy (PDT) with toluidine blue O (TBO) and phycocyanin (PC) activated by a 635 nm diode laser (DL) against Enterococcus faecalis biofilm in the root canal model was investigated. MATERIALS AND METHODS The E. faecalis biofilm in the root canal was treated with TBO and PC with different power densities (636, 954, 1273, and 1592 W/cm2). The untreated biofilm represented the control group. After the treatments, the biofilms were analyzed based on the number of colonies per milliliter. RESULTS TBO and PC activated with 635 nm DL with a power density of 1592 W/cm2 were more efficient in removing E. faecalis biofilms within the root canals than those with a power density of 636 W/cm2 (p = 0.00). CONCLUSION The light power density optimized the bacterial reduction of E. faecalis biofilms in the root canal spaces. These results provide information on the decisive parameters for performing PDT on intracanal biofilms.
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Affiliation(s)
| | - Zahra Jafari
- Department of Endodontics, School of Dentistry, Shahed University, Tehran, Iran
| | - Nasim Chiniforush
- Department of Surgical Sciences and Integrated Diagnostics, University of Genoa, Viale Benedetto XV, Genoa, Italy.
| | - Shima Afrasiabi
- Laser Research Center of Dentistry, Dentistry Research Institute, Tehran University of Medical Sciences, Tehran, Iran.
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Takeuchi Y, Aoki A, Hiratsuka K, Chui C, Ichinose A, Aung N, Kitanaka Y, Hayashi S, Toyoshima K, Iwata T, Arakawa S. Application of Different Wavelengths of LED Lights in Antimicrobial Photodynamic Therapy for the Treatment of Periodontal Disease. Antibiotics (Basel) 2023; 12:1676. [PMID: 38136710 PMCID: PMC10740818 DOI: 10.3390/antibiotics12121676] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Revised: 11/23/2023] [Accepted: 11/24/2023] [Indexed: 12/24/2023] Open
Abstract
Therapeutic light has been increasingly used in clinical dentistry for surgical ablation, disinfection, bio-stimulation, reduction in inflammation, and promotion of wound healing. Photodynamic therapy (PDT), a type of phototherapy, has been used to selectively destroy tumor cells. Antimicrobial PDT (a-PDT) is used to inactivate causative bacteria in infectious oral diseases, such as periodontitis. Several studies have reported that this minimally invasive technique has favorable therapeutic outcomes with a low probability of adverse effects. PDT is based on the photochemical reaction between light, a photosensitizer, and oxygen, which affects its efficacy. Low-power lasers have been predominantly used in phototherapy for periodontal treatments, while light-emitting diodes (LEDs) have received considerable attention as a novel light source in recent years. LEDs can emit broad wavelengths of light, from infrared to ultraviolet, and the lower directivity of LED light appears to be suitable for plaque control over large and complex surfaces. In addition, LED devices are small, lightweight, and less expensive than lasers. Although limited evidence exists on LED-based a-PDT for periodontitis, a-PDT using red or blue LED light could be effective in attenuating bacteria associated with periodontal diseases. LEDs have the potential to provide a new direction for light therapy in periodontics.
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Affiliation(s)
- Yasuo Takeuchi
- Department of Lifetime Oral Health Care Science, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo 113-8549, Japan;
| | - Akira Aoki
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo 113-8549, Japan; (A.I.); (S.H.); (K.T.); (T.I.)
| | - Koichi Hiratsuka
- Department of Biochemistry and Molecular Biology, Nihon University School of Dentistry at Matsudo, Chiba 271-8587, Japan;
| | | | - Akiko Ichinose
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo 113-8549, Japan; (A.I.); (S.H.); (K.T.); (T.I.)
- Waseda Research Institute for Science and Engineering, Waseda University, Tokyo 169-8555, Japan
| | - Nay Aung
- Laser Light Dental Clinic Periodontal and Implant Center, Yangon 11241, Myanmar;
| | - Yutaro Kitanaka
- Department of Oral Diagnosis and General Dentistry, Tokyo Medical and Dental University (TMDU), Tokyo 113-8549, Japan;
| | - Sakura Hayashi
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo 113-8549, Japan; (A.I.); (S.H.); (K.T.); (T.I.)
| | - Keita Toyoshima
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo 113-8549, Japan; (A.I.); (S.H.); (K.T.); (T.I.)
| | - Takanori Iwata
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo 113-8549, Japan; (A.I.); (S.H.); (K.T.); (T.I.)
| | - Shinich Arakawa
- Department of Lifetime Oral Health Care Science, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo 113-8549, Japan;
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Ravazzi TPQ, de Jesus IM, de Oliveira Santos GP, Reis TA, Rosa LP, Rosa FCS. The effects of antimicrobial photodynamic therapy (aPDT) with nanotechnology-applied curcumin and 450nm blue led irradiation on multi-species biofilms in root canals. Lasers Med Sci 2023; 38:254. [PMID: 37932526 DOI: 10.1007/s10103-023-03925-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Accepted: 10/22/2023] [Indexed: 11/08/2023]
Abstract
This study aimed to evaluate the effectiveness of antimicrobial photodynamic therapy (aPDT) utilizing nanotechnology-applied curcumin activated by blue LED (450 nm) on the elimination of microorganisms arranged in multispecies biofilms inside the root canals of extracted human teeth. Forty single-rooted human teeth were used; these were randomized into four experimental groups, each comprising 10 teeth: control group, no treatment; photosensitizer (PS) group, nanotechnology-applied curcumin alone; light group, blue LED used separately; and aPDT group, nanotechnology-applied curcumin activated by blue LED. To carry out the tests, the interiors of the root canals were inoculated with species of Candida albicans (ATCC 90029), Enterococcus faecalis (ATCC 29212), Escherichia coli (ATCC 25922), and methicillin-resistant Staphylococcus aureus (MRSA) (ATCC 43300), using a multispecies biofilm. After the incubation period, the canals were treated according to the experimental groups, with no treatment given in the control group. Studied inasmuch as the antimicrobial effectiveness of aPDT was concerned, it was observed that the greatest reduction in microbial counts using aPDTs was achieved against MRSA (mean reduction = 2.48 Log10 CFU/mL), followed by Escherichia coli (mean reduction = 1.72), and Enterococcus faecalis (mean reduction = 1.65); a reduction greater than 1.5 Log10 CFU/mL showed relevant effectiveness of aPDT against these microorganisms. Of note, aPDT has also shown considerable effectiveness against Candida albicans (mean reduction = 0.71), with a statistical difference in the reduction between the groups. aPDT was effective in reducing all microorganisms examined. The average reduction was greater than 1.5 Log10 in all microorganisms except for Candida albicans. HIGHLIGHTS: • aPDT was a viable treatment for root canals; • Nanotechnological curcumin aPDT was effective in reducing multispecies biofilm microorganisms; • aPDT technique showed efficacy under the worst microbiological conditions , such as mature multispecies biofilm; • Nanotechnological curcumin aPDT was able to reduce Gram positive, negative bacterial and yeasts in root canals.
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Affiliation(s)
- Thayse Pithon Quadros Ravazzi
- Federal University of Bahia, Multidisciplinary Institute of Health, Rio de Contas Street, 58. Candeias, Vitória da Conquista, BA, 450029-094, Brazil.
| | - Iasmym Mendes de Jesus
- Federal University of Bahia, Multidisciplinary Institute of Health, Rio de Contas Street, 58. Candeias, Vitória da Conquista, BA, 450029-094, Brazil
| | - Gabriel Pinto de Oliveira Santos
- Federal University of Bahia, Multidisciplinary Institute of Health, Rio de Contas Street, 58. Candeias, Vitória da Conquista, BA, 450029-094, Brazil
| | - Thaís Azevedo Reis
- Federal University of Bahia, Multidisciplinary Institute of Health, Rio de Contas Street, 58. Candeias, Vitória da Conquista, BA, 450029-094, Brazil
| | - Luciano Pereira Rosa
- Federal University of Bahia, Multidisciplinary Institute of Health, Rio de Contas Street, 58. Candeias, Vitória da Conquista, BA, 450029-094, Brazil
| | - Francine Cristina Silva Rosa
- Federal University of Bahia, Multidisciplinary Institute of Health, Rio de Contas Street, 58. Candeias, Vitória da Conquista, BA, 450029-094, Brazil
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Ndlovu KS, Moloto MJ, Sekhosana KE, Nkambule TTI, Managa M. Porphyrins developed for photoinactivation of microbes in wastewater. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:11210-11225. [PMID: 36515881 DOI: 10.1007/s11356-022-24644-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Accepted: 12/04/2022] [Indexed: 06/17/2023]
Abstract
Photodynamic antimicrobial chemotherapy (PACT) is extensively studied as a strategic method to inactivate pathogenic microbes in wastewater for addressing the limitations associated with chlorination, ozonation, and ultraviolet irradiation as disinfection methods, which generally promote the development of resistant genes and harmful by-products such as trihalomethanes. PACT is dependent on photons, oxygen, and a photosensitizer to induce cytotoxic effects on various microbes by generating reactive oxygen species. Photosensitizers such as porphyrins have demonstrated significant microbial inactivation through PACT, hence now explored for wastewater phototreatment. This review aims to evaluate the efficacy of porphyrins and porphyrin-conjugates as photosensitizers for wastewater photoinactivation. Concerns relating to the application of photosensitizers in water treatment are also evaluated. This includes recovery and reuse of the photosensitizer when immobilized on solid supports.
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Affiliation(s)
- Knowledge Siyabonga Ndlovu
- Institute for Nanotechnology and Water Sustainability (iNanoWS), Florida Campus, College of Science, Engineering and Technology, University of South Africa, Johannesburg, 1710, South Africa
| | - Makwena Justice Moloto
- Institute for Nanotechnology and Water Sustainability (iNanoWS), Florida Campus, College of Science, Engineering and Technology, University of South Africa, Johannesburg, 1710, South Africa
| | - Kutloano Edward Sekhosana
- Institute for Nanotechnology and Water Sustainability (iNanoWS), Florida Campus, College of Science, Engineering and Technology, University of South Africa, Johannesburg, 1710, South Africa
| | - Thabo Thokozani Innocent Nkambule
- Institute for Nanotechnology and Water Sustainability (iNanoWS), Florida Campus, College of Science, Engineering and Technology, University of South Africa, Johannesburg, 1710, South Africa
| | - Muthumuni Managa
- Institute for Nanotechnology and Water Sustainability (iNanoWS), Florida Campus, College of Science, Engineering and Technology, University of South Africa, Johannesburg, 1710, South Africa.
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Utkina EI, Gorbatova MA, Grjibovski AM, Gorbatova LN, Simakova AA. [Potentialities of photoactivated disinfection in dentistry]. STOMATOLOGIIA 2023; 102:84-90. [PMID: 37144773 DOI: 10.17116/stomat202310202184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Infection control is an essential part of dental practice. Oral antiseptics should be highly effective against the most common oral pathogens without causing microbial resistance, biocompatible with the human tissues with no interaction with fillings materials. Photoactivated disinfection (PAD) is based on activation of photosensitizers - specific substances releasing active oxygen forms after absorption of the light. The active oxygen forms destroy bacterial cell structures without affecting human cells. The overwhelming majority of Russian and international researchers have reported high effectiveness of PAD in periodontics, implantology and endodontics, whereas the use of PAD in caries treatment and prevention is not so fully understood yet. Earlier studies have demonstrated high sensitivity of cariogenic bacteria to PAD, suggesting it as an additional minimally invasive caries therapy improving treatment effectiveness. PAD spares dental tissues without reduction in the effectiveness of disinfection. It is particularly important in treatment of deep carious lesions and disinfection of thin dentine layer near the pulp. Effectiveness of PAD in caries treatment has been demonstrated for both permanent and deciduous dentition. PAD doesn't affect bond strength to fillings, improves plasticity of dental pulp and dental hard tissues mineralization in children. Effective control of a wide range of bacteria without causing resistance makes PAD a prospective method of treatment and prevention of caries.
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Affiliation(s)
- E I Utkina
- Northern State Medical University, Arkhangelsk, Russia
| | - M A Gorbatova
- Northern State Medical University, Arkhangelsk, Russia
| | - A M Grjibovski
- Northern State Medical University, Arkhangelsk, Russia
- West Kazakhstan Marat Ospanov Medical University, Aktobe, Republic of Kazakhstan
- Ammosov North-Eastern Federal University, Yakutsk, Russia
| | - L N Gorbatova
- Northern State Medical University, Arkhangelsk, Russia
| | - A A Simakova
- Northern State Medical University, Arkhangelsk, Russia
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Brenes-Alvarado A, Soto-Montero J, Farias-da-Silva FF, Benine-Warlet J, Ribeiro AF, Groppo FC, Steiner-Oliveira C. Does potassium iodide help in the microbial reduction of oral microcosm biofilms after photodynamic therapy with methylene blue and red laser? Photodiagnosis Photodyn Ther 2022; 40:103123. [PMID: 36115559 DOI: 10.1016/j.pdpdt.2022.103123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 08/13/2022] [Accepted: 09/13/2022] [Indexed: 12/14/2022]
Abstract
OBJECTIVE To evaluate the efficacy of methylene blue (MB)-mediated antimicrobial photodynamic therapy (aPDT) doped with potassium iodide (KI) against oral microcosms biofilms cultured in dentin. METHODS A saliva-glycerol stock formed from pooled human saliva was diluted in McBain artificial saliva with 1% sucrose (1:1), inoculated on bovine dentin blocks, and refreshed daily for 5 days. The biofilms were divided (n = 9/group) and treated with 0.9% NaCl (C), 0.2% chlorhexidine (CX), 0.01% MB + low-power laser 15 J, 88 mW, 180 s (PL), and 0.01% MB + 50 mM KI + laser (PKIL). Serial dilution was performed, and cellular viability (CFU/mL) was evaluated for total microorganisms, total lactobacilli, total streptococci, and S. mutans. Additional biofilms were cultured and treated (n = 4) for biomass determination (%BMR). The microscopic structure of the biofilms was observed by SEM. One-way ANOVA and Tukey tests were conducted (α=5%). RESULTS Total microorganisms and total streptococci significantly reduced in biofilms treated with CX and PKIL when compared to C, but the CX, PKIL, and PL treatments did not differ from each other. Total lactobacilli and S. mutans showed a significant reduction in the CX, PL, and PKIL groups when compared to C, but with no difference between them. Biomass analysis showed a significantly reduction for CX and PKIL compared to C. SEM micrographs showed noticeable changes in bacterial membrane integrity for the PKIL and CX groups. CONCLUSION The addition of KI to methylene blue-mediated aPDT in microcosm biofilms was effective in reducing oral microorganisms, but the effect was group dependent.
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Affiliation(s)
- Alejandra Brenes-Alvarado
- Department of Health Sciences and Pediatric Dentistry, Piracicaba Dental School, University of Campinas - UNICAMP, Av. Limeira, 901 - Areião, Piracicaba, SP 13414-903, Brazil; Department of Pediatric Dentistry and Orthodontics, School of Dentistry, University of Costa Rica, Instalaciones Deportivas, Montes de Oca, San José 11501-2060, Costa Rica
| | - Jorge Soto-Montero
- Department of Restorative Dentistry, School of Dentistry, University of Costa Rica, Instalaciones Deportivas, Montes de Oca, San José 11501-2060, Costa Rica
| | - Felipe Fabrício Farias-da-Silva
- Department of Health Sciences and Pediatric Dentistry, Piracicaba Dental School, University of Campinas - UNICAMP, Av. Limeira, 901 - Areião, Piracicaba, SP 13414-903, Brazil
| | - Juliana Benine-Warlet
- Department of Health Sciences and Pediatric Dentistry, Piracicaba Dental School, University of Campinas - UNICAMP, Av. Limeira, 901 - Areião, Piracicaba, SP 13414-903, Brazil
| | - Andreza Ferraz Ribeiro
- Department of Health Sciences and Pediatric Dentistry, Piracicaba Dental School, University of Campinas - UNICAMP, Av. Limeira, 901 - Areião, Piracicaba, SP 13414-903, Brazil
| | - Francisco Carlos Groppo
- Department of Biosciences, Piracicaba Dental School, University of Campinas - UNICAMP, Av. Limeira, 901 - Areião, Piracicaba, SP 3414-903, Brazil
| | - Carolina Steiner-Oliveira
- Department of Health Sciences and Pediatric Dentistry, Piracicaba Dental School, University of Campinas - UNICAMP, Av. Limeira, 901 - Areião, Piracicaba, SP 13414-903, Brazil.
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Shome S, Talukdar AD, Upadhyaya H. Antibacterial activity of curcumin and its essential nanoformulations against some clinically important bacterial pathogens: A comprehensive review. Biotechnol Appl Biochem 2022; 69:2357-2386. [PMID: 34826356 DOI: 10.1002/bab.2289] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2021] [Accepted: 11/22/2021] [Indexed: 12/27/2022]
Abstract
Multidrug-resistant bacterial infections can kill 700,000 individuals globally each year and is considered among the top 10 global health threats faced by humanity as the arsenal of antibiotics is becoming dry and alternate antibacterial molecule is in demand. Nanoparticles of curcumin exhibit appreciable broad-spectrum antibacterial activity using unique and novel mechanisms and thus the process deserves to be reviewed and further researched to clearly understand the mechanisms. Based on the antibiotic resistance, infection, and virulence potential, a list of clinically important bacteria was prepared after extensive literature survey and all recent reports on the antibacterial activity of curcumin and its nanoformulations as well as their mechanism of antibacterial action have been reviewed. Curcumin, nanocurcumin, and its nanocomposites with improved aqueous solubility and bioavailability are very potential, reliable, safe, and sustainable antibacterial molecule against clinically important bacterial species that uses multitarget mechanism such as inactivation of antioxidant enzyme, reactive oxygen species-mediated cellular damage, and inhibition of acyl-homoserine-lactone synthase necessary for quorum sensing and biofilm formation, thereby bypassing the mechanisms of bacterial antibiotic resistance. Nanoformulations of curcumin can thus be considered as a potential and sustainable antibacterial drug candidate to address the issue of antibiotic resistance.
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Affiliation(s)
- Soumitra Shome
- Ethnobotany and Medicinal Plants Research Laboratory, Department of Life Science and Bioinformatics, Assam University, Silchar, Assam, India
| | - Anupam Das Talukdar
- Ethnobotany and Medicinal Plants Research Laboratory, Department of Life Science and Bioinformatics, Assam University, Silchar, Assam, India
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Dias LD, Alves F, Buzza HH, Bagnato VS. Photodisinfection of material surfaces and bacterial skin infections by a detergent loaded with curcumin. Photodiagnosis Photodyn Ther 2022; 39:103021. [PMID: 35850462 DOI: 10.1016/j.pdpdt.2022.103021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 07/12/2022] [Accepted: 07/14/2022] [Indexed: 11/15/2022]
Abstract
The development of technologies and therapeutic strategies is needed to combat skin infections and pathogenic microorganisms present on material surfaces that are still responsible for serious public health problems. In this study, detergents loaded with curcumin were prepared by a simple approach and characterized by UV-vis spectroscopy and fluorescence spectroscopy. Their antibacterial photodynamic effects were evaluated against Staphylococcus aureus in planktonic medium and in vivo (skin infection model), and showed a reduction up to 8 logs and 2 logs, respectively. Additionally, the curcumin-detergents were applied on photodisinfection of material surfaces such as wood, rubber, and stainless steel resulting in an efficient photoinactivation up to 3 logs. These developed detergents loaded with curcumin can improve the decontamination of material surfaces and skin infections (in vivo) when illuminated.
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Affiliation(s)
- Lucas D Dias
- São Carlos Institute of Physics, University of São Paulo, 13560-970 São Carlos, SP, Brazil; Grupo de Química Teórica e Estrutural de Anápolis, Universidade Estadual de Goiás, 75.132-903 Anápolis, GO, Brazil; Laboratório de Novos Materiais, Universidade Evangélica de Goiás, Anápolis, GO, Brazil.
| | - Fernanda Alves
- São Carlos Institute of Physics, University of São Paulo, 13560-970 São Carlos, SP, Brazil
| | - Hilde H Buzza
- São Carlos Institute of Physics, University of São Paulo, 13560-970 São Carlos, SP, Brazil; Institute of Physics, Pontificia Universidad Católica de Chile, Santiago 7820436, Chile
| | - Vanderlei S Bagnato
- São Carlos Institute of Physics, University of São Paulo, 13560-970 São Carlos, SP, Brazil; Department of Biomedical Engineering, Texas A&M University - College Station Texas, 77843, USA.
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Electrospun SF/PLGA/ICG Composite Nanofibrous Membranes for Potential Wound Healing and Tumor Therapy. Processes (Basel) 2022. [DOI: 10.3390/pr10050850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Indocyanine green (ICG) is a near-infrared (NIR) organic reagent for clinical bioimaging and phototherapy. It is a suitable photosensitizer for photodynamic antimicrobial chemotherapy (PACT). In this study, various ICG-loaded nanofibrous membranes were prepared. The water vapor transmission rate (WVTR) of SF/PLGA/20ICG was 3040.49 ± 157.11 g·m−2 day−1, which allowed the maintenance of a humid environment above the wound. The growth inhibition rates for S. aureus and E. coli were 91.53% and 87.95%, respectively. The nanofibrous membranes exhibited excellent antimicrobial performance. Cellular experiments showed that the nanofibrous membranes have good cytocompatibility and antitumor efficacy. SF/PLGA/20ICG showed good potential for application in wound healing and cancer therapy.
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Photoinactivation of multispecies cariogenic biofilm mediated by aluminum phthalocyanine chloride encapsulated in chitosan nanoparticles. Lasers Med Sci 2021; 37:2033-2043. [PMID: 34812971 DOI: 10.1007/s10103-021-03466-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Accepted: 11/08/2021] [Indexed: 10/19/2022]
Abstract
This study aimed to characterize the aluminum phthalocyanine chloride (AlClPc) encapsulated in chitosan nanoparticles (CN) and apply it in antimicrobial photodynamic therapy (aPDT) on multispecies biofilm composed of Streptococcus mutans, Lactobacillus casei, and Candida albicans to analyze the antimicrobial activity and lactate production after treatment. Biofilms were formed in 24-well polystyrene plates at 37 °C for 48 h under microaerophilia. The following groups were evaluated (n = 9): as a positive control, 0.12% chlorhexidine gluconate (CHX); phosphate-buffered saline (PBS) as a negative control; 2.5% CN as release vehicle control; the dark toxicity control of the formulations used (AlClPc and AlClPc + CN) was verified in the absence of light; for aPDT, after 30 min incubation time, the photosensitizers at a final concentration of 5.8 × 10-3 mg/mL were photoirradiated for 1 min by visible light using a LED device (AlClPc + L and AlClPc + CN + L) with 660 nm at the energy density of 100 J/cm2. An in vitro kit was used to measure lactate. The biofilm composition and morphology were observed by scanning electron microscopy (SEM). The antimicrobial activity was analyzed by quantifying colony forming units per mL (CFU/mL) of each microorganism. Bacterial load between groups was analyzed by ANOVA and Tukey HSD tests (α = 0.05). A lower lactate dosage was observed in the aPDT AlClPc + CN + L and CHX groups compared to the CN and AlClPc groups. The aPDT mediated by the nanoconjugate AlClPc + CN + L showed a significant reduction in the viability of S. mutans (3.18 log10 CFU/mL), L. casei (4.91 log10 CFU/mL), and C. albicans (2.09 log10 CFU/mL) compared to the negative control PBS (p < 0.05). aPDT using isolated AlClPc was similar to PBS to the three microorganisms (p > 0.05). The aPDT mediated by the nanoconjugate AlClPc + CN + L was efficient against the biofilm of S. mutans, L. casei, and C. albicans.
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Abstract
LEARNING OBJECTIVES After studying this article, the participant should be able to: 1. Understand the basics of biofilm infection and be able to distinguish between planktonic and biofilm modes of growth. 2. Have a working knowledge of conventional and emerging antibiofilm therapies and their modes of action as they pertain to wound care. 3. Understand the challenges associated with testing and marketing antibiofilm strategies and the context within which these strategies may have effective value. SUMMARY The Centers for Disease Control and Prevention estimate for human infectious diseases caused by bacteria with a biofilm phenotype is 65 percent and the National Institutes of Health estimate is closer to 80 percent. Biofilms are hostile microbial aggregates because, within their polymeric matrix cocoons, they are protected from antimicrobial therapy and attack from host defenses. Biofilm-infected wounds, even when closed, show functional deficits such as deficient extracellular matrix and impaired barrier function, which are likely to cause wound recidivism. The management of invasive wound infection often includes systemic antimicrobial therapy in combination with débridement of wounds to a healthy tissue bed as determined by the surgeon who has no way of visualizing the biofilm. The exceedingly high incidence of false-negative cultures for bacteria in a biofilm state leads to missed diagnoses of wound infection. The use of topical and parenteral antimicrobial therapy without wound débridement have had limited impact on decreasing biofilm infection, which remains a major problem in wound care. Current claims to manage wound biofilm infection rest on limited early-stage data. In most cases, such data originate from limited experimental systems that lack host immune defense. In making decisions on the choice of commercial products to manage wound biofilm infection, it is important to critically appreciate the mechanism of action and significance of the relevant experimental system. In this work, the authors critically review different categories of antibiofilm products, with emphasis on their strengths and limitations as evident from the published literature.
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Affiliation(s)
- Chandan K Sen
- From the Indiana University Health Comprehensive Wound Center, the Indiana Center for Regenerative Medicine & Engineering, and the Indiana University School of Medicine
| | - Sashwati Roy
- From the Indiana University Health Comprehensive Wound Center, the Indiana Center for Regenerative Medicine & Engineering, and the Indiana University School of Medicine
| | - Shomita S Mathew-Steiner
- From the Indiana University Health Comprehensive Wound Center, the Indiana Center for Regenerative Medicine & Engineering, and the Indiana University School of Medicine
| | - Gayle M Gordillo
- From the Indiana University Health Comprehensive Wound Center, the Indiana Center for Regenerative Medicine & Engineering, and the Indiana University School of Medicine
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Hirakawa K, Mori M. Phenothiazine Dyes Induce NADH Photooxidation through Electron Transfer: Kinetics and the Effect of Copper Ions. ACS OMEGA 2021; 6:8630-8636. [PMID: 33817524 PMCID: PMC8015084 DOI: 10.1021/acsomega.1c00484] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Accepted: 03/08/2021] [Indexed: 06/12/2023]
Abstract
Phenothiazine dyes, methylene blue, new methylene blue, azure A, and azure B, photosensitized the oxidation of nicotinamide adenine dinucleotide (NADH), an important coenzyme in the living cells, through electron transfer. The reduced forms of these phenothiazine dyes, which were produced through electron extraction from NADH, underwent reoxidation to the original cationic forms, leading to the construction of a photoredox cycle. This reoxidation process was the rate-determining step in the photoredox cycle. The electron extraction from NADH using phenothiazine dyes can trigger the chain reaction of the NADH oxidation. Copper ions enhanced the photoredox cycle through reoxidation of the reduced forms of phenothiazine dyes. New methylene blue demonstrated the highest photooxidative activity in this experiment due to the fast reoxidation process. Electron-transfer-mediated oxidation and the role of endogenous metal ions may be important elements in the photosterilization mechanism.
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Affiliation(s)
- Kazutaka Hirakawa
- Applied
Chemistry and Biochemical Engineering Course, Department of Engineering,
Graduate School of Integrated Science and Technology, Shizuoka University, Johoku 3-5-1, Naka-ku, Hamamatsu, Shizuoka 432-8561, Japan
- Department
of Optoelectronics and Nanostructure Science, Graduate School of Science
and Technology, Shizuoka University, Johoku 3-5-1, Naka-ku, Hamamatsu, Shizuoka 432-8561, Japan
| | - Mizuho Mori
- Applied
Chemistry and Biochemical Engineering Course, Department of Engineering,
Graduate School of Integrated Science and Technology, Shizuoka University, Johoku 3-5-1, Naka-ku, Hamamatsu, Shizuoka 432-8561, Japan
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Low-Temperature Plasma as an Approach for Inhibiting a Multi-Species Cariogenic Biofilm. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11020570] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
This study aimed to determine how low-temperature plasma (LTP) treatment affects single- and multi-species biofilms formed by Streptococcus mutans, Streptococcus sanguinis, and Streptococcus gordonii formed on hydroxyapatite discs. LTP was produced by argon gas using the kINPen09™ (Leibniz Institute for Plasma Science and Technology, INP, Greifswald, Germany). Biofilms were treated at a 10 mm distance from the nozzle of the plasma device to the surface of the biofilm per 30 s, 60 s, and 120 s. A 0.89% saline solution and a 0.12% chlorhexidine solution were used as negative and positive controls, respectively. Argon flow at three exposure times (30 s, 60 s, and 120 s) was also used as control. Biofilm viability was analyzed by colony-forming units (CFU) recovery and confocal laser scanning microscopy. Multispecies biofilms presented a reduction in viability (log10 CFU/mL) for all plasma-treated samples when compared to both positive and negative controls (p < 0.0001). In single-species biofilms formed by either S. mutans or S. sanguinis, a significant reduction in all exposure times was observed when compared to both positive and negative controls (p < 0.0001). For single-species biofilms formed by S. gordonii, the results indicate total elimination of S. gordonii for all exposure times. Low exposure times of LTP affects single- and multi-species cariogenic biofilms, which indicates that the treatment is a promising source for the development of new protocols for the control of dental caries.
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Garcia BA, Panariello BHD, de Freitas Pontes KM, Duarte S. Regimen and different surfaces interfere with photodynamic therapy on Candida albicans biofilms. J Microbiol Methods 2020; 178:106080. [PMID: 33039543 DOI: 10.1016/j.mimet.2020.106080] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Revised: 10/01/2020] [Accepted: 10/02/2020] [Indexed: 01/10/2023]
Abstract
The aim of this study is to compare antimicrobial photodynamic therapy (aPDT) against Candida albicans biofilms formed on two different substrates - acrylic resin or bottom of polystyrene plate; and two aPDT application regimens - twice-daily over the course of 48 h or single treatment after 48 h biofilm formation. C. albicans SN425 biofilms cultivated on Roswell Park Memorial Institute medium were incubated for 5 min with toluidine blue O (44 μM) used as a photosensitizer before red light (635 nm; 175.2 J/cm2) exposure for 2 min. As negative control, ultrapure water, and as positive control 0.12% chlorhexidine (CHX) were used. Biofilms were analyzed for colony forming units (CFU) and cells morphology by confocal scanning laser microscopy. Single treatment and twice-daily aPDT on polystyrene plate and single treatment on acrylic resin did not significantly reduce the CFU (p > 0.05); in contrast, twice-daily aPDT on acrylic resin has reduced C. albicans below the detection limit, similarly to CHX treatment. Single aPDT treatment on polystyrene plate and on the resin presented a bulky and homogeneous biofilm predominantly formed by pseudohyphae. In contrast, in the resin group, the biofilm treated twice-daily with aPDT was predominantly formed by yeast cells, whilst pseudohyphae were occasionally visible. In conclusion, biofilms formed on polystyrene plates are more resistant to aPDT than biofilms formed on acrylic resin. Moreover, applying aPDT twice-daily reduces C. albicans biofilm development on acrylic resin and is a better approach against C. albicans biofilms than one single application on the mature biofilm.
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Affiliation(s)
- Bruna Albuquerque Garcia
- Department of Restorative Dentistry, Federal University of Ceara, Fortaleza, Ceara, Brazil. Monsenhor Furtado Street - Rodolfo Teófilo, Fortaleza, CE 60430-355, Brazil.
| | - Beatriz Helena Dias Panariello
- Department of Cariology, Operative Dentistry and Dental Public Health, Indiana University School of Dentistry, Indianapolis, Indiana, USA. 1121 W. Michigan Street, DS 406; Indianapolis, IN, 46202, USA.
| | - Karina Matthes de Freitas Pontes
- Department of Restorative Dentistry, Federal University of Ceara, Fortaleza, Ceara, Brazil. Monsenhor Furtado Street - Rodolfo Teófilo, Fortaleza, CE 60430-355, Brazil.
| | - Simone Duarte
- Department of Cariology, Operative Dentistry and Dental Public Health, Indiana University School of Dentistry, Indianapolis, Indiana, USA. 1121 W. Michigan Street, DS 406; Indianapolis, IN, 46202, USA.
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Qiu H, Zhu S, Pang L, Ma J, Liu Y, Du L, Wu Y, Jin Y. ICG-loaded photodynamic chitosan/polyvinyl alcohol composite nanofibers: Anti-resistant bacterial effect and improved healing of infected wounds. Int J Pharm 2020; 588:119797. [DOI: 10.1016/j.ijpharm.2020.119797] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2020] [Revised: 07/28/2020] [Accepted: 08/18/2020] [Indexed: 01/09/2023]
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Felix Gomez GG, Lippert F, Ando M, Zandona AF, Eckert GJ, Gregory RL. Photoinhibition of Streptococcus mutans Biofilm-Induced Lesions in Human Dentin by Violet-Blue Light. Dent J (Basel) 2019; 7:dj7040113. [PMID: 31835833 PMCID: PMC6960986 DOI: 10.3390/dj7040113] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Revised: 09/29/2019] [Accepted: 11/28/2019] [Indexed: 01/13/2023] Open
Abstract
This in vitro study determined the effectiveness of violet-blue light on Streptococcus mutans (UA159) biofilm induced dentinal lesions. Biofilm was formed on human dentin specimens in a 96-well microtiter plate and incubated for 13 h in the presence of tryptic soy broth (TSB) or TSB supplemented with 1% sucrose (TSBS). Violet-blue light (405 nm) from quantitative light-induced fluorescence (QLFTM) was used to irradiate the biofilm. Supernatant liquid was removed, and the biofilm was irradiated continuously with QLF for 5 min twice daily with an interval of 6 h for 5 d, except with one treatment on the final day. Colony forming units (CFU) of the treated biofilm, changes in fluorescence (∆F; QLF-Digital BiluminatorTM), lesion depth (L), and integrated mineral loss (∆Z; both transverse microradiography) were quantified at the end of the fifth day. Statistical analysis used analysis of variance (ANOVA), testing at a 5% significance level. In the violet-blue light irradiated groups, there was a significant reduction (p < 0.05) of bacterial viability (CFU) of S. mutans with TSB and TSBS. Violet-blue light irradiation resulted in the reduction of ∆F and L of the dentinal surface with TSBS. These results indicate that violet-blue light has the capacity to reduce S. mutans cell numbers.
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Affiliation(s)
- Grace Gomez Felix Gomez
- Department of Biomedical Sciences and Comprehensive Care, Indiana University School of Dentistry, Indianapolis, IN 46202, USA;
| | - Frank Lippert
- Department of Cariology, Operative Dentistry and Dental Public Health, Indiana University School of Dentistry, Indianapolis, IN 46202, USA; (F.L.); (M.A.)
| | - Masatoshi Ando
- Department of Cariology, Operative Dentistry and Dental Public Health, Indiana University School of Dentistry, Indianapolis, IN 46202, USA; (F.L.); (M.A.)
| | - Andrea F. Zandona
- Department of Comprehensive Care, Tufts School of Dental Medicine, Boston, MA 02111, USA;
| | - George J. Eckert
- Department of Biostatistics, Indiana University, Indianapolis, IN 46202, USA
| | - Richard L. Gregory
- Department of Biomedical Sciences and Comprehensive Care, Indiana University School of Dentistry, Indianapolis, IN 46202, USA;
- Correspondence: ; Tel.: +1-317-274-9949
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Schalch TO, Palmieri M, Longo PL, Braz-Silva PH, Tortamano IP, Michel-Crosato E, Mayer MPA, Jorge WA, Bussadori SK, Pavani C, Negreiros RM, Horliana ACRT. Evaluation of photodynamic therapy in pericoronitis: Protocol of randomized, controlled, double-blind study. Medicine (Baltimore) 2019; 98:e15312. [PMID: 31027098 PMCID: PMC6831272 DOI: 10.1097/md.0000000000015312] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/24/2019] [Accepted: 03/27/2019] [Indexed: 11/25/2022] Open
Abstract
INTRODUCTION Pericoronitis is a common disease in the eruption phase of third molars, sometimes debilitating, with an impact on the quality of life. The most indicated treatment in the initial phase is the irrigation for cleanliness of the region. In order to reduce the chances of systemic dissemination of the infection and antibiotics use, it is mandatory to test effective treatments in the initial phase of pericoronitis avoiding the evolution of the infectious disease. Photodynamic therapy (PDT) is an interesting alternative because it is an effective antimicrobial treatment that is easy to perform and does not select bacterial resistance. The methylene blue (MB) used in PDT has been studied in an oral formulation, which optimizes the formation of monomers increasing its antimicrobial action. OBJECTIVE The aim of this study is to evaluate the effectiveness of PDT with MB in an astringent vehicle in pericoronitis on the initial phase in healthy patients through microbiological, clinical, and immune response. The impact of pericoronitis on oral health-related quality of life (OHRQoL) of these patients will also be evaluated. METHOD In this randomized, controlled, double-blind clinical bioequivalence protocol, 64 healthy patients with pericoronitis will be evaluated. Patients will be randomized into the positive control group (G1) (n = 32): irrigation with sterile saline and PDT (conventional MB at 0.005% concentration and irradiation with low intensity laser λ = 660 nm, 9J per point and radiant exposure of 318 J/cm), and the experimental group (G2) (n = 32): treatment identical to G1, however, MB will be delivered in a new formulation for oral use. Microbiological analysis will be performed by RT-PCR for the bacterium Tannerella forsythia. Gingival crevicular fluid and saliva will be collected to evaluate cytokines by Luminex assay (Luminex Corporation, Austin, TX). The pain (visual analogue scale), swelling and buccal opening (digital caliper), and OHRQoL will also be evaluated through the OHIP-14 questionnaire. The variables will be evaluated in T1 (baseline), T2 (immediately after PDT), and T3 (4th day after PDT). Registration: clinicaltrials.gov NCT03576105. Registered in July 2018.
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Affiliation(s)
- Tânia Oppido Schalch
- Postgraduate Program in Biophotonics Applied to Health Sciences, University Nove de Julho, UNINOVE
| | - Michelle Palmieri
- Department of Stomatology, School of Dentistry, University of São Paulo
| | | | - Paulo Henrique Braz-Silva
- Department of Stomatology, School of Dentistry, University of São Paulo
- Laboratory of Virology, Institute of Tropical Medicine of São Paulo
| | | | | | | | | | - Sandra Kalil Bussadori
- Postgraduate Program in Biophotonics Applied to Health Sciences, University Nove de Julho, UNINOVE
| | - Christiane Pavani
- Postgraduate Program in Biophotonics Applied to Health Sciences, University Nove de Julho, UNINOVE
| | - Renata Matalon Negreiros
- Postgraduate Program in Biophotonics Applied to Health Sciences, University Nove de Julho, UNINOVE
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Černáková L, Light C, Salehi B, Rogel-Castillo C, Victoriano M, Martorell M, Sharifi-Rad J, Martins N, Rodrigues CF. Novel Therapies for Biofilm-Based Candida spp. Infections. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2019; 1214:93-123. [DOI: 10.1007/5584_2019_400] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Terra Garcia M, Correia Pereira AH, Figueiredo-Godoi LMA, Jorge AOC, Strixino JF, Junqueira JC. Photodynamic therapy mediated by chlorin-type photosensitizers against Streptococcus mutans biofilms. Photodiagnosis Photodyn Ther 2018; 24:256-261. [PMID: 30157462 DOI: 10.1016/j.pdpdt.2018.08.012] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Revised: 08/16/2018] [Accepted: 08/24/2018] [Indexed: 10/28/2022]
Abstract
Photodynamic therapy (PDT) can be used for the control of oral pathogens and different photosensitizers (PS) have been investigated. This study evaluated the efficacy of PDT against Streptococcus mutans biofilms using two second-generation PS derived from chlorin: Photoditazine® (PDZ) and Fotoenticine® (FTC). These PS were compared to methylene blue (MB), a dye with proven antimicrobial activity against S. mutans. Suspensions of S. mutans were cultured in contact with bovine tooth disks for biofilm formation. After 48 h, the biofilms were treated with PDZ (0.6 mg/mL), FTC (0.6 mg/mL) or MB (1 mg/mL) and submitted to laser irradiation (660 nm, 50 mW/cm2). The biofilms were quantified by the determination of CFU/mL count and analyzed by scanning electron microscopy (SEM). All PS used for PDT reduced the number of S. mutans, with a statistically significant difference compared to the untreated groups. PDT achieved microbial reductions of 4 log with MB and 6 log with PDZ, while the use of FTC resulted in the complete elimination of S. mutans biofilms. SEM analysis confirmed the CFU/mL results, showing that all PS, particularly FTC, were able to detach the biofilms and to eliminate the bacteria. In conclusion, PDT mediated by chlorin-type PS exhibited greater antimicrobial activity against S. mutans than MB-mediated PDT, indicating that these PS can be useful for the control of dental caries.
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Affiliation(s)
- Maíra Terra Garcia
- Institute of Science and Technology, Univ Estadual Paulista/UNESP, São José dos Campos, SP, Brazil.
| | - André Henrique Correia Pereira
- Laboratório de Terapia Fotodinâmica, Instituto de Pesquisa e Desenvolvimento (IP&D), Universidade do Vale do Paraíba/UNIVAP, São José dos Campos, SP, Brazil
| | | | | | - Juliana Ferreira Strixino
- Laboratório de Terapia Fotodinâmica, Instituto de Pesquisa e Desenvolvimento (IP&D), Universidade do Vale do Paraíba/UNIVAP, São José dos Campos, SP, Brazil
| | - Juliana Campos Junqueira
- Institute of Science and Technology, Univ Estadual Paulista/UNESP, São José dos Campos, SP, Brazil
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Botta SB, Ana PA, Gonçalves MLL, Fernandes KPS, Mesquita-Ferrari RA, de Araújo Prates R, Brugnera A, Bussadori SK. Photodynamic Therapy Associated with a Blue Dye Papain-Based Gel and Evaluation of Its Degradation of Type I Collagen Fibers. Photomed Laser Surg 2018; 36:100-104. [DOI: 10.1089/pho.2017.4342] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Sergio Brossi Botta
- Postgraduate Program, Biophotonics Applied to Health Sciences, Nove de Julho University, São Paulo, São Paulo, Brazil
| | - Patricia Aparecida Ana
- Engineering Center, Modeling and Applied Social Sciences, Federal University of ABC, Sao Bernardo do Campo, São Paulo, Brazil
| | | | | | | | - Renato de Araújo Prates
- Postgraduate Program, Biophotonics Applied to Health Sciences, Nove de Julho University, São Paulo, São Paulo, Brazil
| | - Aldo Brugnera
- National Institute of Science and Technology, INCT “Basic Optics Applied to Life Sciences,” IFSC, USP, São Carlos, São Paulo, Brazil
| | - Sandra Kalil Bussadori
- Postgraduate Program, Biophotonics Applied to Health Sciences, Nove de Julho University, São Paulo, São Paulo, Brazil
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