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Azimzadeh M, Greco G, Farmani A, Pourhajibagher M, Taherkhani A, Alikhani MY, Bahador A. Synergistic effects of nano curcumin mediated photodynamic inactivation and nano-silver@colistin against Pseudomonas aeruginosa biofilms. Photodiagnosis Photodyn Ther 2024; 45:103971. [PMID: 38218569 DOI: 10.1016/j.pdpdt.2024.103971] [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: 11/17/2023] [Revised: 01/10/2024] [Accepted: 01/10/2024] [Indexed: 01/15/2024]
Abstract
BACKGROUND Patients with burn injuries colonized by multidrug-resistant Pseudomonas aeruginosa face increased mortality risk. The efficacy of colistin, a last-resort treatment, is declining as resistance levels rise. P. aeruginosa's robust biofilm exacerbates antibiotic resistance. Photodynamic Inactivation (PDI) shows promise in fighting biofilm. MATERIALS AND METHODS Nano curcumin (nCur) particles were synthesized, and their chemical characteristics were determined using zeta potential (ZP), dynamic light scattering analysis (DLS), energy-dispersive X-ray (EDX) analysis, and fourier transform infrared (FTIR). We conducted an MTT assay to assess the cytotoxicity of nCur-mediated PDI in combination with nanosilver colistin. The fractional biofilm inhibitory concentration (FBIC) of two P. aeruginosa clinical isolates and P. aeruginosa ATCC 27853 during nCur-mediated PDI@AgNPs@CL was determined using a 3-dimensional (3-D) checkerboard assay. To study the effect of nCur-mediated PDI@AgNPs@CL on lasI, lasR, rhlI, rhlR, pelA, and pslA gene expression, Reverse transcription-quantitative polymerase chain reaction (RT-qPCR) was conducted at each isolate's FBIC. The impact of treatments was also investigated using scanning electron microscopy (SEM). RESULTS The ZP and mean DLS values of the nCur were 10.3 mV and 402.6 ± 24.6 nm, respectively. The distinct functional groups of nCur corresponded with the peaks of FTIR absorption. Moreover, the EDX analysis showed the ratios of different metals in nCur. Cell viability percentages of nCur-mediated PDI@AgNPs@CL at FBIC concentrations of clinical isolates Nos. 30, 354, and P. aeruginosa ATCC 27853 were 91.36 %, 83.20 %, and 92.48 %, respectively. nCur-mediated PDI@AgNPs@CL treatment showed synergistic effects in clinical isolates and P. aeruginosa ATCC 27853 in a 3-D checkerboard assay. All six of the investigated genes showed down-regulation after nCur-mediated PDI@AgNPs@CL treatment. The most suppressed gene during nCur-mediated PDI@AgNPs@CL treatment was the rhlR gene (-11.9-fold) of P. aeruginosa ATCC 27853. The SEM micrographs further proved the connecting cement reduction and biofilm mass mitigation following nCur-mediated PDI@AgNPs@CL treatments. CONCLUSIONS The combined effect of nCur-mediated PDI and AgNPs@CL synergistically reduce the formation of biofilm in P. aeruginosa. This may be attributable to the suppression of the genes responsible for regulating the production of biofilms.
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Affiliation(s)
- Masoud Azimzadeh
- Department of Microbiology, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Grazia Greco
- Department of Veterinary Medicine, University of Bari Aldo Moro, Bari, Italy
| | - Abbas Farmani
- Dental Research Center, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Maryam Pourhajibagher
- Dental Research Center, Dentistry Research Institute, Tehran University of Medical Sciences, Tehran, Iran.
| | - Amir Taherkhani
- Research Center for Molecular Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Mohammad Yousef Alikhani
- Department of Microbiology, Hamadan University of Medical Sciences, Hamadan, Iran; Infectious Disease Research Center, Hamadan University of Medical Sciences, Hamadan, Iran.
| | - Abbas Bahador
- Department of Microbiology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran; Fellowship in Clinical Laboratory Sciences, BioHealth Lab, Tehran, Iran.
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Chatterjee P, Dutta SS, Agarwal M, Dey S, Chakraborty T. UV-A-Induced Photoisomerization and Photodimerization of Curcumin: An Ion Mobility Mass Spectrometry Study. J Phys Chem A 2024; 128:548-562. [PMID: 38206070 DOI: 10.1021/acs.jpca.3c05933] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2024]
Abstract
Curcumin, the bioactive compound present in spice plant turmeric, has been shown to exhibit selective phototoxic activities toward mammalian cancer cells, and it is being used extensively as a photosensitizer (PS) in photodynamic therapies (PDT). However, so far, the fate of curcumin toward photochemical transformations is not well understood. Here we report our findings of a number of novel photochemical reaction channels of curcumin in water-methanol mixture, like photoisomerization, photodimerization, and photooxidation (H2-loss). The reaction was performed by irradiating the curcumin solution with ultraviolet (UV) light of wavelength 350 nm, which is abundant in the earth's troposphere. Product identification and structure elucidation are done by employing an integrated method of drift tube ion mobility mass spectrometry (DTIMS) in combination with high-performance liquid chromatography (HPLC) and collision-induced dissociation (CID) of the mass-selected molecular ions. Two photoisomers of curcumin produced as a result of trans-cis configurational changes about C═C double bonds in the excited state have been identified, and it has been shown that they could serve as the precursors for formation of isomeric dimers via [2 + 2] cycloaddition and H2-loss products. Comparisons of the experimentally measured collision cross-section (CCS) values of the reactant and product ions obtained by the DTIMS method with those predicted by the electronic structure theory are found to be very effective for the discrimination of the produced photoisomers. The observed photochemical reaction channels are potentially significant toward uses of curcumin as a photosensitizer in photodynamic therapy.
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Affiliation(s)
- Piyali Chatterjee
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A Raja S C Mullick Road, Jadavpur, Kolkata 700032, India
| | - Subhra Sankar Dutta
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A Raja S C Mullick Road, Jadavpur, Kolkata 700032, India
| | - Megha Agarwal
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A Raja S C Mullick Road, Jadavpur, Kolkata 700032, India
| | - Supriyo Dey
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A Raja S C Mullick Road, Jadavpur, Kolkata 700032, India
| | - Tapas Chakraborty
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A Raja S C Mullick Road, Jadavpur, Kolkata 700032, India
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Coaguila-Llerena H, Raphael da Silva L, Faria G. Research methods assessing sodium hypochlorite cytotoxicity: A scoping review. Heliyon 2024; 10:e23060. [PMID: 38192787 PMCID: PMC10772573 DOI: 10.1016/j.heliyon.2023.e23060] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 10/26/2023] [Accepted: 11/24/2023] [Indexed: 01/10/2024] Open
Abstract
Sodium hypochlorite (NaOCl) cytotoxicity has been assessed using different methodologies, which has led to arbitrary interpretations. This scoping review aimed to discuss the different methodological protocols for assessing NaOCl cytotoxicity. A literature review performed in the PubMed and Embase databases up to July 2023 identified manuscripts reporting NaOCl cytotoxicity. The dataset identified 546 publications, further screened by 2 reviewers. Ninety studies were identified and mined methodologically to collect information on cell type, cytotoxicity assay, NaOCl dilution solutions, presence of fetal bovine serum (FBS), and NaOCl exposure time. The culture medium used in cytotoxicity assays contains buffering substances that neutralize the pH of NaOCl, thus reducing its cytotoxicity, an approach that may lead to bias when solutions with different pH are compared. For short exposure periods, as in simulations to evaluate the contact between irrigant and periapical tissue cells during chemo-mechanical preparation, NaOCl dilution should be performed with saline, which does not buffer the irrigant. For long exposure periods, as in simulations of irrigant extrusions, NaOCl should be diluted in the culture medium, to reproduce the expected buffering effect occurring in extrusions. The presence of FBS in culture medium can decrease NaOCl toxicity. There is no standardization of NaOCl cytotoxicity methodologies. This poses the risk of arriving at incorrect results and, therefore, pertinent tests must be refined.
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Affiliation(s)
- Hernán Coaguila-Llerena
- Department of Restorative Dentistry, Araraquara School of Dentistry, São Paulo State University -UNESP, Araraquara, São Paulo, Brazil
| | - Luana Raphael da Silva
- Department of Restorative Dentistry, Araraquara School of Dentistry, São Paulo State University -UNESP, Araraquara, São Paulo, Brazil
| | - Gisele Faria
- Department of Restorative Dentistry, Araraquara School of Dentistry, São Paulo State University -UNESP, Araraquara, São Paulo, Brazil
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Li Y, Sun G, Xie J, Xiao S, Lin C. Antimicrobial photodynamic therapy against oral biofilm: influencing factors, mechanisms, and combined actions with other strategies. Front Microbiol 2023; 14:1192955. [PMID: 37362926 PMCID: PMC10288113 DOI: 10.3389/fmicb.2023.1192955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Accepted: 05/16/2023] [Indexed: 06/28/2023] Open
Abstract
Oral biofilms are a prominent cause of a wide variety of oral infectious diseases which are still considered as growing public health problems worldwide. Oral biofilms harbor specific virulence factors that would aggravate the infectious process and present resistance to some traditional therapies. Antimicrobial photodynamic therapy (aPDT) has been proposed as a potential approach to eliminate oral biofilms via in situ-generated reactive oxygen species. Although numerous types of research have investigated the effectiveness of aPDT, few review articles have listed the antimicrobial mechanisms of aPDT on oral biofilms and new methods to improve the efficiency of aPDT. The review aims to summarize the virulence factors of oral biofilms, the progress of aPDT in various oral biofilm elimination, the mechanism mediated by aPDT, and combinatorial approaches of aPDT with other traditional agents.
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Affiliation(s)
- Yijun Li
- Department of Endodontics, Stomatological Hospital of Xiamen Medical College, Xiamen, China
| | - Guanwen Sun
- Department of Stomatology, Fujian Medical University Xiamen Humanity Hospital, Xiamen, China
| | - Jingchan Xie
- Department of Endodontics, Stomatological Hospital of Xiamen Medical College, Xiamen, China
| | - Suli Xiao
- Department of Endodontics, Stomatological Hospital of Xiamen Medical College, Xiamen, China
| | - Chen Lin
- Department of Endodontics, Stomatological Hospital of Xiamen Medical College, Xiamen, China
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Alkahtany MF. Efficacy of curcumin-mediated photodynamic therapy for root canal therapy procedures: A systematic review. Photodiagnosis Photodyn Ther 2022; 41:103252. [PMID: 36563708 DOI: 10.1016/j.pdpdt.2022.103252] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2022] [Revised: 12/17/2022] [Accepted: 12/19/2022] [Indexed: 12/24/2022]
Abstract
BACKGROUND This systematic review aimed to investigate the effectiveness of CUR-mediated PDT (Curcumin mediated PDT) as an adjunct to conventional chemo-mechanical debridement and/or standard PDT of the RC system with endodontic infections. METHODS The focused research question was: "Whether the application Curcumin mediated PDT as an adjunct is more effective than the traditional chemo-mechanical debridement and/or standard PDT of the RC system alone for improving antibacterial and/or mechanical features among subjects undergoing RCT?". An electronic literature search was performed in Scopus, PubMed, and Web of Science. In vitro reports utilizing Curcumin mediated PDT as an adjunct to conventional chemo-mechanical debridement considering permanent dentition assessing the antibacterial and/or mechanical effect were included. RESULTS Eighteen articles were included in the review, out of which 13 studies assessed the antibacterial activity, while 5 evaluated the mechanical properties. Most of the studies concluded that Curcumin mediated PDT had a significant antibacterial activity than the conventional chemo-mechanical debridement and/or standard PDT. Four of the five studies suggested that Curcumin mediated PDT had no impact on the push-out bond strength of root dentin. Furthermore, the significant heterogeneity in the data from the included studies did not permit the author to carry out a meta-analysis. CONCLUSION There is potential for application of Curcumin mediated PDT as an adjunct to the conventional chemo-mechanical debridement and/or standard PDT in reducing the bacterial load, however, Curcumin mediated PDT has minimal effect on enhancing the pushout bond strength of fiber posts to radicular dentin. Moreover, clinical studies are required to provide a more conclusive opinion on the efficacy of Curcumin mediated PDT for RCT procedures.
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Affiliation(s)
- Mazen F Alkahtany
- Department of Restorative Dental Science, Division of Endodontics, College of Dentistry, King Saud University, Riyadh, Saudi Arabia.
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Gu B, Wang B, Li X, Feng Z, Ma C, Gao L, Yu Y, Zhang J, Zheng P, Wang Y, Li H, Zhang T, Chen H. Photodynamic therapy improves the clinical efficacy of advanced colorectal cancer and recruits immune cells into the tumor immune microenvironment. Front Immunol 2022; 13:1050421. [PMID: 36466825 PMCID: PMC9716470 DOI: 10.3389/fimmu.2022.1050421] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Accepted: 11/02/2022] [Indexed: 10/03/2023] Open
Abstract
OBJECTIVE Although photodynamic therapy (PDT) has been proven effective in various tumors, it has not been widely used as a routine treatment for colorectal cancer (CRC), and the characteristics of changes in the tumor microenvironment (TME) after PDT have not been fully elucidated. This study evaluated the efficacy of PDT in patients with advanced CRC and the changes in systemic and local immune function after PDT. METHODS Patients with stage III-IV CRC diagnosed in our hospital from November 2020 to July 2021 were retrospectively analyzed to compare the survival outcomes among each group. Subsequently, short-term efficacy, systemic and local immune function changes, and adverse reactions were assessed in CRC patients treated with PDT. RESULTS A total of 52 CRC patients were enrolled in this retrospective study from November 2020 to July 2021, and the follow-up period ended in March 2022. The overall survival (OS) of the PDT group was significantly longer than that of the non-PDT group (p=0.006). The objective response rate (ORR) and disease control rate two months after PDT were 44.4% and 88.9%, respectively. Differentiation degree (p=0.020) and necrosis (p=0.039) are two crucial factors affecting the short-term efficacy of PDT. The systemic immune function of stage III patients after PDT decreased, whereas that of stage IV patients increased. Local infiltration of various immune cells such as CD3+ T cells, CD4+ T cells, CD8+ T cells, CD20+ B cells and macrophages in the tumor tissue were significantly increased. No severe adverse reactions associated with PDT were observed. CONCLUSION PDT is effective for CRC without significant side effects according to the available data. It alters the TME by recruiting immune cells into tumor tissues.
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Affiliation(s)
- Baohong Gu
- Second Clinical Medical College, Lanzhou University, Lanzhou, Gansu, China
| | - Bofang Wang
- Second Clinical Medical College, Lanzhou University, Lanzhou, Gansu, China
| | - Xuemei Li
- Second Clinical Medical College, Lanzhou University, Lanzhou, Gansu, China
| | - Zedong Feng
- Second Clinical Medical College, Lanzhou University, Lanzhou, Gansu, China
| | - Chenhui Ma
- Second Clinical Medical College, Lanzhou University, Lanzhou, Gansu, China
| | - Lei Gao
- Second Clinical Medical College, Lanzhou University, Lanzhou, Gansu, China
| | - Yang Yu
- Second Clinical Medical College, Lanzhou University, Lanzhou, Gansu, China
| | - Jing Zhang
- Second Clinical Medical College, Lanzhou University, Lanzhou, Gansu, China
| | - Peng Zheng
- Second Clinical Medical College, Lanzhou University, Lanzhou, Gansu, China
| | - Yunpeng Wang
- Second Clinical Medical College, Lanzhou University, Lanzhou, Gansu, China
| | - Haiyuan Li
- Second Clinical Medical College, Lanzhou University, Lanzhou, Gansu, China
| | - Tao Zhang
- Second Clinical Medical College, Lanzhou University, Lanzhou, Gansu, China
- Department of Oncology, The First Hospital of Lanzhou University, Lanzhou, Gansu, China
| | - Hao Chen
- Second Clinical Medical College, Lanzhou University, Lanzhou, Gansu, China
- Key Laboratory of the Digestive System Tumors of Gansu Province, Lanzhou, Gansu, China
- Department of Oncology, Lanzhou University Second Hospital, Lanzhou, Gansu, China
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The Potential Application of Natural Photosensitizers Used in Antimicrobial Photodynamic Therapy against Oral Infections. Pharmaceuticals (Basel) 2022; 15:ph15060767. [PMID: 35745686 PMCID: PMC9227410 DOI: 10.3390/ph15060767] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Revised: 06/14/2022] [Accepted: 06/16/2022] [Indexed: 02/05/2023] Open
Abstract
Oral health problems and the emergence of antimicrobial resistance among pathogenic bacterial strains have become major global challenges and are essential elements that negatively affect general well-being. Antimicrobial photodynamic therapy (APDT) is based on a light source and oxygen that activates a nontoxic photosensitizer, resulting in microbial destruction. Synthetic and natural products can be used to help the APDT against oral microorganisms. The undesirable consequences of conventional photosensitizers, including toxicity, and cost encourage researchers to explore new promising photosensitizers based on natural compounds such as curcumin, chlorella, chlorophyllin, phycocyanin, 5-aminolevulinic acid, and riboflavin. In this review, we summarize in vitro studies describing the potential use of APDT therapy conjugated with some natural products against selected microorganisms that are considered to be responsible for oral infections.
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Strazzi-Sahyon HB, Cintra LTA, Nakao JM, Takamiya AS, Queiroz ÍODA, Henrique Dos Santos P, de Oliveira SHP, Sivieri-Araujo G. Cytotoxicity of root canal irrigating solutions and photodynamic therapy using curcumin photosensitizer. Photodiagnosis Photodyn Ther 2022; 38:102795. [PMID: 35263668 DOI: 10.1016/j.pdpdt.2022.102795] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Revised: 02/20/2022] [Accepted: 03/02/2022] [Indexed: 12/01/2022]
Abstract
BACKGROUND Photodynamic therapy (PDT) has shown satisfactory antibacterial effects. However, few information regarding the cytotoxicity potential of PDT using curcumin as a photosensitizer (PS) on fibroblasts are found. The aim of this in vitro study was to evaluate the cytotoxicity of root canal irrigating solutions and photodynamic therapy with curcumin PS on the L-929 cell line. METHODS Healthy mouse skin fibroblast cells were distributed into the following 7 experimental groups: G1 - culture medium DMEM (control group); G2 - 0.9% sodium chloride; G3 - 2.5% sodium hypochlorite (NaOCl); G4 - 5% NaOCl; G5 - PDT with curcumin PS at 500 mg/L + blue LED; G6 - PDT with curcumin PS at 750 mg/L + blue LED; and G7 - PDT with curcumin PS at 1000 mg/L + blue LED. All experimental groups which underwent PDT action were submitted to blue LED for 4 minutes, with a wavelength of 480 nm and energy fluency of 75 J/cm². The cultures were maintained under standard cell culture conditions (37°C, 100% humidity, 5% CO2). Cell viability analysis was performed using the colorimetric method to evaluate the periods of 6, 24, and 48 hours. Data were subjected to the Kruskal-Wallis test, followed by the Dunn test to compare groups and Friedman test to compare periods (α = 0.05). RESULTS When comparing the periods, no significant differences were observed for any of the experimental groups analyzed (p > 0.05), except for the NaOCl2.5 group that exhibited higher cell viability at 6 hours compared to the period of 48 hours (p = 0.0489). In the comparisons of the experimental groups, there were no statistically significant differences between the control group compared to all disinfection protocols, regardless of the period evaluated (p > 0.05), except for the PDT + C1000 group that showed lower cell viability (p < 0.05). CONCLUSIONS PDT with curcumin at 1000 mg/L was cytotoxic on L-929 fibroblast cell culture. However, laser-activated curcumin at a concentration of 500 mg/L presented no influence on L-929 fibroblast cell viability in in vitro conditions.
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Affiliation(s)
- Henrico Badaoui Strazzi-Sahyon
- Department of Dental Materials and Prosthodontics, Araçatuba School of Dentistry, São Paulo State University - UNESP, Araçatuba, SP, Brazil.
| | - Luciano Tavares Angelo Cintra
- Department of Preventive and Restorative Dentistry, Discipline of Endodontics, Araçatuba School of Dentistry, São Paulo State University - UNESP, Araçatuba, SP, Brazil.
| | - Jaqueline Midori Nakao
- Department of Preventive and Restorative Dentistry, Discipline of Endodontics, Araçatuba School of Dentistry, São Paulo State University - UNESP, Araçatuba, SP, Brazil.
| | - Aline Satie Takamiya
- Department of Surgery and Integrated Clinic, Araçatuba School of Dentistry, São Paulo State University - UNESP, Araçatuba, SP, Brazil.
| | - Índia Olinta de Azevedo Queiroz
- Department of Preventive and Restorative Dentistry, Discipline of Endodontics, Araçatuba School of Dentistry, São Paulo State University - UNESP, Araçatuba, SP, Brazil.
| | - Paulo Henrique Dos Santos
- Department of Dental Materials and Prosthodontics, Araçatuba School of Dentistry, São Paulo State University - UNESP, Araçatuba, SP, Brazil.
| | | | - Gustavo Sivieri-Araujo
- Department of Preventive and Restorative Dentistry, Discipline of Endodontics, Araçatuba School of Dentistry, São Paulo State University - UNESP, Araçatuba, SP, Brazil.
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Diakoumopoulou D, Magana M, Karoussis IK, Nikolaou C, Chatzipanagiotou S, Ioannidis A. The ever-changing landscape in modern dentistry therapeutics - Enhancing the emptying quiver of the periodontist. Heliyon 2021; 7:e08342. [PMID: 34816039 PMCID: PMC8591475 DOI: 10.1016/j.heliyon.2021.e08342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Revised: 09/12/2021] [Accepted: 11/04/2021] [Indexed: 11/29/2022] Open
Abstract
Introduction/Objectives Periodontitis comprises of a wide range of inflammatory conditions of the gums leading to soft tissue damage and attachment loss. The initiation of periodontitis constitutes a rather complex disease pathogenesis which is based on pathogenic shifts of the oral microbiota combined with the host-microbiome interactions. The severity of the periodontitis is multifactorial depending on genetic, environmental, as well as host immunity factors. Data and sources To make an inclusive analysis on the periodontitis therapeutics, reading of the recent relevant literature was carried out using the MEDLINE/PubMed database, Google Scholar and the NIH public online database for clinical trials (http://www.clinicaltrials.gov). Conclusions Tackling the inflammation associated periodontal defects can be succeeded with conventional therapy or resective and regenerative treatment. To date, the mechanical removal of the supragingival and subgingival biofilm is considered the “gold standard” of periodontal therapy in combination with the use of antibacterial compounds. The antimicrobial resistance phenomenon tends to turn all the currently applied antibacterials into “endangered species”. Ongoing efforts through the conduct of clinical trials should be focused on understanding the advantages of modern approaches in comparison to traditional therapies.
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Affiliation(s)
- Dimitra Diakoumopoulou
- Department of Clinical Microbiology, Athens Medical School, Aeginition Hospital, Athens, Greece
| | - Maria Magana
- Department of Clinical Microbiology, Athens Medical School, Aeginition Hospital, Athens, Greece
| | - Ioannis K Karoussis
- Department of Periodontology, School of Dental Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Chrysoula Nikolaou
- Department of Clinical Microbiology, Athens Medical School, Aeginition Hospital, Athens, Greece
| | | | - Anastasios Ioannidis
- Department of Clinical Microbiology, Athens Medical School, Aeginition Hospital, Athens, Greece.,Department of Nursing, Faculty of Health Sciences, University of Peloponnese, Tripolis, Greece
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Strazzi-Sahyon HB, Oliveira AKL, Carvalho AP, Figueiredo RB, Cintra LTA, Gomes-Filho JE, Dos Santos PH, Sivieri-Araujo G. Influence of photodynamic therapy and intracanal medication on Martens hardness, elastic modulus and bond strength of glass-fiber posts to endodontically treated root dentin. Photodiagnosis Photodyn Ther 2021; 36:102571. [PMID: 34626826 DOI: 10.1016/j.pdpdt.2021.102571] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Revised: 09/14/2021] [Accepted: 09/27/2021] [Indexed: 12/20/2022]
Abstract
BACKGROUND The purpose of this in vitro study was to evaluate the influence of photodynamic therapy (PDT) with methylene blue photosensitizer (PS) and calcium hydroxide intracanal medication on Martens hardness (MH), elastic modulus (Eit) and adhesive bond strength of glass-fiber posts in different thirds of intraradicular dentin. METHODS Ninety-six bovine teeth were distributed into the following 6 experimental groups: a negative control irrigated with deionized water; a positive control irrigated with deionized water and filled with calcium hydroxide intracanal medication (Ca[OH]2); Ca[OH]2 + methylene blue 50 mg/L without activation; Ca[OH]2 + methylene blue 100 mg/L without activation; Ca[OH]2 + methylene blue 50 mg/L activated by red laser; and Ca[OH]2 + methylene blue 100 mg/L activated by red laser (n = 16). MH and Eit were measured using an ultramicrodurometer under load action of 3 mN (n = 8). Adhesive bond strength was measured using the push-out test in a universal testing machine (n = 8), and representative samples underwent scanning electron microscopy. Data on MH, Eit, and bond strength were subjected to normality tests and analyzed by ANOVA and Tukey's test (α = 0.05). RESULTS Methylene blue PS, activated or not by red laser, associated with calcium hydroxide medication did not promote significant difference as compared to the control groups irrigated with deionized water, associated or not with the use of intracanal medication, regarding mechanical properties and bond strength (p > 0.05). Experimental groups showed no difference between the thirds regarding root canal depth (p > 0.05), except for the positive control group, in which the apical third showed higher Eit values than the middle third (p = 0.0324). There was a predominance of mixed failure in all experimental groups, excepted the red laser-activated group treated with the highest concentration of methylene blue, which showed predominance of adhesive failure. CONCLUSIONS PDT with methylene blue PS at 50 mg/L, associated with intracanal calcium hydroxide medication is a satisfactory alternative for endodontic treatment as there is no interference in the mechanical properties and bond strength among glass-fiber posts to intraradicular dentin at any depth of the root canal.
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Affiliation(s)
- Henrico Badaoui Strazzi-Sahyon
- Department of Dental Materials and Prosthodontics, Araçatuba School of Dentistry, São Paulo State University - UNESP, Araçatuba, SP, Brazil
| | - Arianny Késsia Lara Oliveira
- Department of Preventive and Restorative Dentistry, Discipline of Endodontics, Araçatuba School of Dentistry, São Paulo State University - UNESP, Araçatuba School of Dentistry, Rua José Bonifácio, 1193, 16015-050, Araçatuba, SP, Brazil
| | - Amanda Pereira Carvalho
- Department of Metallurgical and Materials Engineering, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Roberto Braga Figueiredo
- Department of Metallurgical and Materials Engineering, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Luciano Tavares Angelo Cintra
- Department of Preventive and Restorative Dentistry, Discipline of Endodontics, Araçatuba School of Dentistry, São Paulo State University - UNESP, Araçatuba School of Dentistry, Rua José Bonifácio, 1193, 16015-050, Araçatuba, SP, Brazil
| | - João Eduardo Gomes-Filho
- Department of Preventive and Restorative Dentistry, Discipline of Endodontics, Araçatuba School of Dentistry, São Paulo State University - UNESP, Araçatuba School of Dentistry, Rua José Bonifácio, 1193, 16015-050, Araçatuba, SP, Brazil
| | - Paulo Henrique Dos Santos
- Department of Dental Materials and Prosthodontics, Araçatuba School of Dentistry, São Paulo State University - UNESP, Araçatuba, SP, Brazil
| | - Gustavo Sivieri-Araujo
- Department of Preventive and Restorative Dentistry, Discipline of Endodontics, Araçatuba School of Dentistry, São Paulo State University - UNESP, Araçatuba School of Dentistry, Rua José Bonifácio, 1193, 16015-050, Araçatuba, SP, Brazil.
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Souza MA, Bonacina LV, Trento A, Bonfante FDC, Porsch HF, Ricci R, Lago BLT, Lago CTR, Gabrielli ES, Bervian J, Farina AP, Cecchin D. Influence of the apical limit of instrumentation and photodynamic therapy on the postoperative pain of lower molars with asymptomatic apical periodontitis. Photodiagnosis Photodyn Ther 2021; 36:102489. [PMID: 34416381 DOI: 10.1016/j.pdpdt.2021.102489] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2021] [Revised: 07/29/2021] [Accepted: 08/16/2021] [Indexed: 11/24/2022]
Abstract
INTRODUCTION The aim of present study was to evaluate the influence of apical limit of instrumentation and PDT on the postoperative pain of lower molars with asymptomatic apical periodontitis. METHODS Forty patients were included in the present study and were divided into 4 groups (n=10), according to apical limit of instrumentation and use of PDT: instrumentation at 0.0 measurement; instrumentation at 0.0 measurement+PDT; instrumentation 1mm beyond 0.0 measurement; instrumentation 1mm beyond 0.0 measurement+PDT. In the PDT, the root canals were filled with 0.01% methylene blue, remaining for 5 min. The low-intensity laser was used with 100 mW, 660-690 nm wavelength), using intra-canal fibre. Root canals were irradiated for 90 s, delivering total dose of 9 J and energy density of 320 J/cm2. After root canal preparation and PDT protocols, root canals were filled with gutta-percha and AH Plus endodontic sealer, being sealed with composite resin.The evaluation of postoperative pain was performed by visual analog scale after 24, 48, 72 hours and 7 days. Data were analysed by specific statistical tests, at level of 5%. RESULTS No statistical significant difference was observed among experimental groups in all evaluation periods, as well as in the intragroup analysis over time, regarding postoperative pain and analgesic medication consumption (p>0.05). CONCLUSIONS Apical limit of instrumentation and PDT have no influence on the postoperative pain of lower molars with asymptomatic apical periodontitis.
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Affiliation(s)
| | | | - Alexia Trento
- School of Dentistry, University of Passo Fundo, Passo Fundo, RS, Brazil
| | | | | | - Rafaela Ricci
- School of Dentistry, University of Passo Fundo, Passo Fundo, RS, Brazil
| | | | | | | | - Juliane Bervian
- School of Dentistry, University of Passo Fundo, Passo Fundo, RS, Brazil
| | - Ana Paula Farina
- School of Dentistry, University of Passo Fundo, Passo Fundo, RS, Brazil
| | - Doglas Cecchin
- School of Dentistry, University of Passo Fundo, Passo Fundo, RS, Brazil
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12
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Influence of two photodynamic therapy sessions and different photosensitizers on the bond strength of glass-fiber posts in different regions of intraradicular dentin. Photodiagnosis Photodyn Ther 2021; 33:102193. [PMID: 33503518 DOI: 10.1016/j.pdpdt.2021.102193] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Revised: 12/15/2020] [Accepted: 01/19/2021] [Indexed: 12/18/2022]
Abstract
BACKGROUND Although photodynamic therapy associated with photosensitizers can promote microbial reduction, studies evaluating the consequences of two photodynamic therapy sessions associated with different photosensitizers on the bond strength of glass-fiber posts to endodontically treated intraradicular dentin are scarce. This in vitro study aimed to investigate the influence of two photodynamic therapy sessions using methylene blue or curcumin photosensitizers on the bond strength of glass-fiber posts to intraradicular dentin in different root thirds. METHODS Seventy-two teeth were divided into 9 experimental groups according to photosensitizer type, concentration and light-activation: Control - deionized water; Methylene blue 50 mg/L; Methylene blue 50 mg/L + laser; Methylene blue 100 mg/L; Methylene blue 100 mg/L + laser; Curcumin 500 mg/L; Curcumin 500 mg/L + LED; Curcumin 1000 mg/L; and Curcumin 1000 mg/L + LED. Push-out bond strength of the fiber posts to endodontically treated dentin was evaluated using a universal test machine (n = 8). Bond strength data underwent Kruskal-Wallis test, followed by Dunn test for comparison between treatments, and Friedman test for comparison between thirds (α = 0.05). Illustrative scanning electron microscopy images were obtained to qualify the failure mode. RESULTS Curcumin at higher concentration, activated or not by blue LED, decreased the bond strength values in the apical region when compared with the control group (P < 0.05). There was no difference between two photodynamic therapy sessions using methylene blue photosensitizer (activated or not) and the control group regardless of concentrations and root canal depth evaluated (P > 0.05). Regarding intraradicular depth, the different thirds showed no statistical difference on bond strength values (P > 0.05). All experimental groups presented predominance of mixed-type failure, excepting the methylene blue group at higher concentration activated by red laser, and the curcumin photosensitizer at both concentrations activated by blue LED. CONCLUSIONS Methylene blue at a 50 mg/L concentration can be applied in two PDT sessions, after biomechanical preparation and before glass-fiber post luting, as it presents no influence on root dentin bond strength in in vitro conditions.
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Banci HA, Strazzi-Sahyon HB, Duarte MAH, Cintra LTA, Gomes-Filho JE, Chalub LO, Berton SA, de Oliveira VHD, dos Santos PH, Sivieri-Araujo G. Influence of photodynamic therapy on bond strength and adhesive interface morphology of MTA based root canal sealer to different thirds of intraradicular dentin. Photodiagnosis Photodyn Ther 2020; 32:102031. [DOI: 10.1016/j.pdpdt.2020.102031] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Revised: 09/20/2020] [Accepted: 09/28/2020] [Indexed: 11/16/2022]
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de Santana WMO, Caetano BL, de Annunzio SR, Pulcinelli SH, Ménager C, Fontana CR, Santilli CV. Conjugation of superparamagnetic iron oxide nanoparticles and curcumin photosensitizer to assist in photodynamic therapy. Colloids Surf B Biointerfaces 2020; 196:111297. [DOI: 10.1016/j.colsurfb.2020.111297] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 07/25/2020] [Accepted: 07/29/2020] [Indexed: 12/17/2022]
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Photosensitizers attenuate LPS-induced inflammation: implications in dentistry and general health. Lasers Med Sci 2020; 36:913-926. [PMID: 33150475 DOI: 10.1007/s10103-020-03180-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Accepted: 10/28/2020] [Indexed: 10/23/2022]
Abstract
Antimicrobial photodynamic therapy (aPDT) is a complementary therapeutic modality for periodontal and endodontic diseases, in which Gram-negative bacteria are directly involved. Currently, there are few evidences regarding the effects of aPDT on bacterial components such as lipopolysaccharide (LPS) and it would represent a major step forward in the clinical use of this therapy. In this context, this study aimed to evaluate the efficacy of different photosensitizers (PSs) used in aPDT in LPS inhibition. Four PSs were used in this study: methylene blue (MB), toluidine blue (TBO), new methylene blue (NMB), and curcumin (CUR). Different approaches to evaluate LPS interaction with PSs were used, such as spectrophotometry, Limulus amebocyte lysate (LAL) test, functional assays using mouse macrophages, and an in vivo model of LPS injection. Spectrophotometry showed that LPS decreased the absorbance of all PSs used, indicating interactions between the two species. LAL assay revealed significant differences in LPS concentrations upon pre-incubation with the different PSs. Interestingly, the inflammatory potential of LPS decreased after previous treatment with the four PSs, resulting in decreased secretion of inflammatory cytokines by macrophages. In vivo, pre-incubating curcumin with LPS prevented animals from undergoing septic shock within the established time. Using relevant models to study the inflammatory activity of LPS, we found that all PSs used in this work decreased LPS-induced inflammation, with a more striking effect observed for NMB and curcumin. These data advance the understanding of the mechanisms of LPS inhibition by PSs.
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Deluca MCDC, Scarparo RK, Aspesi M, Matte BF, Brand LM, Grecca FS, Casagrande L, Kopper PMP. Cytotoxic, Migration, and Angiogenic Effects of Photodynamic Therapy and Photobiomodulation Associated with a Revascularization Protocol. J Endod 2020; 47:69-77. [PMID: 33058937 DOI: 10.1016/j.joen.2020.10.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 09/26/2020] [Accepted: 10/02/2020] [Indexed: 12/14/2022]
Abstract
INTRODUCTION This study evaluated photodynamic therapy (PDT) and photobiomodulation therapy (PBM) as adjuncts to pulp revascularization using cultures of apical papilla cells (APCs) and endothelial cells (HUVECs). METHODS The root canal and apical foramen of 2 mandibular first premolars were enlarged to simulate immature teeth. The canal of 1 tooth was filled with 1 mL 0.005% methylene blue (MB). After that, the canals of both teeth were irrigated with 20 mL 1.5% sodium hypochlorite (NaOCl) and 20 mL 17% EDTA. The resulting solutions were diluted in cell culture media at a concentration of 0.5% (0.5% MB + NaOCl + EDTA and 0.5% NaOCl + EDTA). After PDT (0.5% MB + NaOCl + EDTA + PDT) and PBM (0.5% NaOCl + EDTA + PBM) applications, the effects were evaluated to determine cytotoxicity, polarity index, APC migration, and HUVEC sprouting, and results were compared with those of their controls (solutions without laser application). Cell culture media (CT) was also used as a control. Data were analyzed using 1-way analysis of variance and the Tukey post hoc test (P ≤ .05). RESULTS PDT and PBM promoted greater APC viability than their controls, and PDT had greater cell viability than CT (P < .05). All protocols reduced APC migration when compared with CT (P < .05). HUVEC sprouts grown out of spheroids in PBM had a greater ratio area than their control (P ≤ .01), and the PDT ratio of the spheroid area was similar to that of its control (P > .05). CONCLUSIONS PBM and PDT seem to be potentially effective adjuncts to revascularization in nonvital immature teeth.
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Affiliation(s)
| | | | - Marina Aspesi
- Graduate Program in Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Bibiana Franzen Matte
- Graduate Program in Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Luiza Meurer Brand
- Graduate Program in Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Fabiana Soares Grecca
- Graduate Program in Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Luciano Casagrande
- Graduate Program in Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Patrícia Maria Poli Kopper
- Graduate Program in Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil.
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Chaves Lamarque GC, Méndez DAC, Matos AA, Dionísio TJ, Machado MAAM, Magalhães AC, Oliveira RC, Cruvinel T. In vitro effect of curcumin-mediated antimicrobial photodynamic therapy on fibroblasts: viability and cell signaling for apoptosis. Lasers Med Sci 2020; 36:1169-1175. [PMID: 32996021 DOI: 10.1007/s10103-020-03150-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Accepted: 09/22/2020] [Indexed: 01/08/2023]
Abstract
Although it was demonstrated that curcumin-mediated antimicrobial photodynamic therapy (aPDT) is effective for reducing the viability of microbial cells and the vitality of oral biofilms, the cytotoxicity of this therapeutic approach for host cells has not been yet elucidated. Hence, the aim of this study was to evaluate the cytotoxicity and apoptotic effects of curcumin-mediated aPDT on mouse fibroblasts. Cells were treated with 0.6 or 6 μmol.L-1 curcumin combined with 0.075 or 7.5 J.cm-2 LED at 455 nm. Cytotoxicity was determined by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) and crystal violet (CV) assays, while quantitative reverse transcriptase-PCR (qRT-PCR) was used to assess the expression of Bax, Bad, Bcl-2, VDAC-1, cytochrome C, and Fas-L genes for apoptosis. The differences between groups were detected by Kruskal-Wallis and post hoc Dunn's tests for MTT and CV assays and by ANOVA and post hoc Tukey test for qRT-PCR (P < 0.05). The effect of 0.6 μmol.L-1 curcumin plus 0.075 J.cm-2 LED (minimum parameter) did not differ statistically from control group; however, the combination of 0.6 μmol.L-1 curcumin plus 7.5 J.cm-2 LED reduced viable cells in 34%, while the combinations of 6 μmol.L-1 curcumin plus 0.075 and 7.5 J.cm-2 LED reduced viable cells in 47% and 99%, respectively. aPDT increased significantly the relative expression of Bax/Bcl-2, cytochrome C, VDAC-1, and Fas-L genes, without influence on the ratio Bad/Bcl-2. Therefore, curcumin-mediated aPDT activated Bcl-2 apoptosis signaling pathways in mouse fibroblasts regarding present conditions, reducing the viability of cells with the increase of curcumin concentrations and light energies.
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Affiliation(s)
- Giuliana Campos Chaves Lamarque
- Department of Pediatric Dentistry, Orthodontics and Public Health, Bauru School of Dentistry, University of São Paulo, Al. Dr. Octávio Pinheiro Brisolla, 9-75, Vila Universitária, Bauru, SP, 17012-901, Brazil
| | - Daniela Alejandra Cusicanqui Méndez
- Department of Pediatric Dentistry, Orthodontics and Public Health, Bauru School of Dentistry, University of São Paulo, Al. Dr. Octávio Pinheiro Brisolla, 9-75, Vila Universitária, Bauru, SP, 17012-901, Brazil
| | - Adriana Arruda Matos
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, Bauru, Brazil
| | - Thiago José Dionísio
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, Bauru, Brazil
| | - Maria Aparecida Andrade Moreira Machado
- Department of Pediatric Dentistry, Orthodontics and Public Health, Bauru School of Dentistry, University of São Paulo, Al. Dr. Octávio Pinheiro Brisolla, 9-75, Vila Universitária, Bauru, SP, 17012-901, Brazil
| | - Ana Carolina Magalhães
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, Bauru, Brazil
| | - Rodrigo Cardoso Oliveira
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, Bauru, Brazil
| | - Thiago Cruvinel
- Department of Pediatric Dentistry, Orthodontics and Public Health, Bauru School of Dentistry, University of São Paulo, Al. Dr. Octávio Pinheiro Brisolla, 9-75, Vila Universitária, Bauru, SP, 17012-901, Brazil.
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The effect of indocyanine green-based photodynamic therapy on healthy fibroblast and keratinocyte cells. Photodiagnosis Photodyn Ther 2020; 31:101891. [DOI: 10.1016/j.pdpdt.2020.101891] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Revised: 06/10/2020] [Accepted: 06/19/2020] [Indexed: 10/24/2022]
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Strazzi-Sahyon HB, de Oliveira MS, da Silva PP, Banci HA, de Melo FS, Martinez CMT, Cintra LTA, Gomes-Filho JE, Dezan-Júnior E, dos Santos PH, Sivieri-Araujo G. Does photodynamic therapy with methylene blue affect the mechanical properties and bond strength of glass-fiber posts in different thirds of intraradicular dentin? Photodiagnosis Photodyn Ther 2020; 30:101673. [DOI: 10.1016/j.pdpdt.2020.101673] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Revised: 11/27/2019] [Accepted: 01/21/2020] [Indexed: 10/25/2022]
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Yang QQ, Farha AK, Kim G, Gul K, Gan RY, Corke H. Antimicrobial and anticancer applications and related mechanisms of curcumin-mediated photodynamic treatments. Trends Food Sci Technol 2020. [DOI: 10.1016/j.tifs.2020.01.023] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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21
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Shakibaie M, Vaezjalali M, Rafii-Tabar H, Sasanpour P. Phototherapy alters the oncogenic metabolic activity of breast cancer cells. Photodiagnosis Photodyn Ther 2020; 30:101695. [PMID: 32109618 DOI: 10.1016/j.pdpdt.2020.101695] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2019] [Revised: 02/19/2020] [Accepted: 02/21/2020] [Indexed: 01/01/2023]
Abstract
BACKGROUND Metabolic reprogramming in cancer cells is a strategy to attain a high proliferation rate, invasion, and metastasis. In this study, the effects of phototherapy at different wavelengths were investigated on the metabolic activity of breast cancer cells. METHODS The states of the MCF7 cells proliferation and viability were measured by the MTT assay. Glucose consumption and the lactate formation in the LED-irradiated cells culture were analyzed by biochemical assay kits. The Amino acid concentration in the culture media of the MCF7 cells was analyzed using HPLC. Moreover, the gene expression of some glycolytic, TCA cycle and pentose phosphate cycleenzymes were assessed by real time PCR. RESULTS Phototherapy at wavelength of 435 nm decreased the cell viability by 23 % when the energy dose was 17.5 J/cm2 compared to the control group. The expression of the LDHA and GLS was up-regulated in 629 nm-treated cells while the expression of these genes was down-regulated in the MCF7 cells irradiated at 435 nm in comparison with the control group. Consequently, the glucose consumption and the lactate formation were diminished respectively by 22 % and 15 % in the 435 nm-irradiated cells while the glucose consumption and the lactate formation were increased in the 629 nm-irradiated cells by 112 % and 107 % in comparison with the control group. In addition, the analysis of the glutamine concentration by the HPLC indicated that the blue light irradiation decreased the glutamine consumption while the red light increased it in comparison with the control group.
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Affiliation(s)
- Mehdi Shakibaie
- Department of Medical Physics and Biomedical Engineering, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Maryam Vaezjalali
- Department of Microbiology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | - Hashem Rafii-Tabar
- Department of Medical Physics and Biomedical Engineering, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran; The Physics Branch of Iran Academy of Sciences, Tehran, Iran
| | - Pezhman Sasanpour
- Department of Medical Physics and Biomedical Engineering, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran; School of Nanoscience, Institute for Research in Fundamental Sciences (IPM), P. O. Box 19395-5531, Tehran, Iran.
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Ivanaga CA, Miessi DMJ, Nuernberg MAA, Claudio MM, Garcia VG, Theodoro LH. Antimicrobial photodynamic therapy (aPDT) with curcumin and LED, as an enhancement to scaling and root planing in the treatment of residual pockets in diabetic patients: A randomized and controlled split-mouth clinical trial. Photodiagnosis Photodyn Ther 2019; 27:388-395. [PMID: 31301434 DOI: 10.1016/j.pdpdt.2019.07.005] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Revised: 06/26/2019] [Accepted: 07/08/2019] [Indexed: 12/20/2022]
Abstract
INTRODUCTION Residual pockets represent a risk factor for periodontal disease progression. Diabetes Mellitus (DM) may impair prognosis after cause-related therapy, mainly due to the chronic hyperglycemia that negatively influences tissue repair. This study evaluated the clinical efficacy of antimicrobial photodynamic therapy (aPDT) with curcumin (CUR) solution (100 mg/L) and LED irradiation (465-485 nm), as an adjunctive therapy to scaling and root planing (SRP), in the treatment of residual pockets in type 2 diabetic patients. METHODS Individuals with type 2 DM and chronic periodontitis presenting at least one residual pocket per quadrant were selected (n = 25). In each patient, all residual pockets with probing depth (PD) ≥5 mm and bleeding on probing (BOP) were allocated to receive, according to quadrant: 1) SRP (SRP group); 2) SRP and irrigation with CUR solution (100 mg/L) (CUR group); 3) SRP and LED irradiation (InGaN, 465-485 nm, 0.78 cm², 78 mW, 100 mW/cm², 60 s) (LED group); 4) SRP, irrigation with CUR solution (100 mg/L), one minute of pre-irradiation, and LED irradiation (InGaN, 465-485 nm, 60 s) (aPDT group). Clinical parameters of PD, gingival recession (GR), clinical attachment level (CAL), BOP and visible plaque index (PI) were evaluated at baseline, three and six months post-therapies. Differences between the examination periods in each group were analyzed by Friedman's test for non-parametric data, while parametric data were submitted to analysis of variance (One-way ANOVA), followed by Tukey's test. Intergroup comparisons were performed by Kruskal-Wallis test. RESULTS In an intergroup comparison, the mean values for PD, GR, CAL, BOP and PI were not different at baseline, three and six months (p > 0.05). The intragroup comparison evidenced reduction in PD and BOP in all treatment groups at three and six months (p < 0.05). Significant CAL gain was notable only for the aPDT and LED groups at three months in comparison to baseline data (p < 0.05). CONCLUSION Treatment of residual pockets in patients with type 2 DM through association of SRP with aPDT (CUR solution 100 mg/L and LED irradiation) or LED irradiation may yield short-term (three months) clinical benefits regarding CAL gain.
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Affiliation(s)
- Camila Ayumi Ivanaga
- Department of Surgery and Integrated Clinic, Division of Periodontology, São Paulo State University (Unesp), School of Dentistry, Araçatuba, São Paulo, Brazil
| | - Daniela Maria Janjacomo Miessi
- Department of Surgery and Integrated Clinic, Division of Periodontology, São Paulo State University (Unesp), School of Dentistry, Araçatuba, São Paulo, Brazil
| | - Marta Aparecida Alberton Nuernberg
- Department of Surgery and Integrated Clinic, Division of Periodontology, São Paulo State University (Unesp), School of Dentistry, Araçatuba, São Paulo, Brazil
| | - Marina Módolo Claudio
- Department of Surgery and Integrated Clinic, Division of Periodontology, São Paulo State University (Unesp), School of Dentistry, Araçatuba, São Paulo, Brazil
| | - Valdir Gouveia Garcia
- Department of Surgery and Integrated Clinic, Division of Periodontology, São Paulo State University (Unesp), School of Dentistry, Araçatuba, São Paulo, Brazil
| | - Leticia Helena Theodoro
- Department of Surgery and Integrated Clinic, Division of Periodontology, São Paulo State University (Unesp), School of Dentistry, Araçatuba, São Paulo, Brazil.
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Strazzi Sahyon HB, Silva PPD, Oliveira MSD, Cintra LTA, Dezan-Júnior E, Gomes-Filho JE, Jacinto RDC, dos Santos PH, Sivieri-Araujo G. Influence of curcumin photosensitizer in photodynamic therapy on the mechanical properties and push-out bond strength of glass-fiber posts to intraradicular dentin. Photodiagnosis Photodyn Ther 2019; 25:376-381. [DOI: 10.1016/j.pdpdt.2019.01.025] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2018] [Revised: 12/18/2018] [Accepted: 01/18/2019] [Indexed: 01/03/2023]
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Plotino G, Grande NM, Mercade M. Photodynamic therapy in endodontics. Int Endod J 2018; 52:760-774. [PMID: 30548497 DOI: 10.1111/iej.13057] [Citation(s) in RCA: 98] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2018] [Accepted: 12/06/2018] [Indexed: 01/14/2023]
Abstract
Photodynamic therapy (PDT) is a treatment modality that was initiated in 1900; however, it was not until the last decade that PDT regained attention for its several favourable features during the treatment of microbial infections in endodontics. Recently, several papers advocated its use for root canal treatment. The concept of photodynamic inactivation requires microbial exposure to either exogenous or endogenous photosensitizer molecules, followed by visible light energy, typically wavelengths in the red/near-infrared region that cause the excitation of the photosensitizers resulting in the production of singlet oxygen and other reactive oxygen species that react with intracellular components and consequently produce cell inactivation and death. Recently, PDT has been suggested as a promising effective adjunct to standard antimicrobial intracanal cleaning and shaping for the treatment of periapical lesions. Current publications tested PDT in terms of bacterial load reduction in vivo, in vitro and ex vivo, showing promising results. The purpose of this article was to review the existing literature on PDT in the endodontic field regarding its mechanism of action, photosensitizers and light sources, limitations and clinical procedures. Although positive results have been demonstrated in vitro, there are considerably fewer in vivo investigations. In conclusion, more in vivo studies are needed on the use of antimicrobial PDT in root canal treatment.
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Affiliation(s)
| | - N M Grande
- Catholic University of Sacred Heart, Rome, Italy
| | - M Mercade
- Department of Dentistry, Universitat de Barcelona, Barcelona, Spain.,Researcher IDIBELL Institute, Barcelona, Spain
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Souza MA, Tumelero Dias C, Zandoná J, Paim Hoffmann I, Sanches Menchik VH, Palhano HS, Bertol CD, Rossato-Grando LG, Cecchin D, de Figueiredo JAP. Antimicrobial activity of hypochlorite solutions and reciprocating instrumentation associated with photodynamic therapy on root canals infected with Enterococcus faecalis – An in vitro study. Photodiagnosis Photodyn Ther 2018; 23:347-352. [DOI: 10.1016/j.pdpdt.2018.07.015] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Revised: 07/08/2018] [Accepted: 07/23/2018] [Indexed: 10/28/2022]
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Strazzi Sahyon HB, Pereira da Silva P, Silva de Oliveira M, Angelo Cintra LT, Gomes-Filho JE, Henrique dos Santos P, Sivieri-Araujo G. Effect of photodynamic therapy on the mechanical properties and bond strength of glass-fiber posts to endodontically treated intraradicular dentin. J Prosthet Dent 2018; 120:317.e1-317.e7. [DOI: 10.1016/j.prosdent.2018.05.009] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Revised: 05/28/2018] [Accepted: 05/30/2018] [Indexed: 10/28/2022]
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Saitawee D, Teerakapong A, Morales NP, Jitprasertwong P, Hormdee D. Photodynamic therapy of Curcuma longa extract stimulated with blue light against Aggregatibacter actinomycetemcomitans. Photodiagnosis Photodyn Ther 2018. [PMID: 29535046 DOI: 10.1016/j.pdpdt.2018.03.001] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
BACKGROUND AND OBJECTIVE Curcumin, one of an established curcuminoid substances extracted from Curcuma longa, has been used as a photosensitizer (PS) in photodynamic therapy (PDT). Curcuminoid substances has been reported to have benefits in treating dental chronic infection and inflammation diseases, such as chronic periodontitis. The purpose of this study was to find the optimum concentration of Curcuma longa (CL) extract, containing all curcuminoid substances, and the power density of blue light (BL) in photodynamic therapy against periodontally pathogenic bacteria, A. actinomycetemcomitans. METHODS Antibacterial activity of various concentrations of CL extract against A. actinomycetemcomitans was determined. Exponentially growing bacteria were combined with 2-fold dilution of CL extract solution ranging from 25 to 0.098 μg/ml. Co-culture bacteria treated with 0.12% chlorhexidine (CHX) served as the positive control. The effect of photostimulation with light emitting diode (LED) 420-480 nm at 16.8 J/cm2 for 1 min on the selected concentration of CL extract was examined. Bacteria viability was determined by plate counting technique. In addition, production of free radicals was tested by electron spin resonance spectroscope (ESR) with 5,5-dimethyl-1-pyrroline N-oxide (DMPO). RESULTS The antibacterial activity of CL extract was dose dependent. Without BL, 25 μg/ml CL extract showed 6.03 ± 0.39 log10A. actinomycetemcomitans. Interestingly, the combination of BL and 0.78 μg/ml CL extract solution showed complete absence of A. actinomycetemcomitans. Peak signal intensity of hydroxyl radical production was also detected with the combination of BL and CL. CONCLUSIONS CL extract not only had antimicrobial activity but also could be used as an effective PS when stimulated with BL in PDT. The optimal antibacterial effect of CL extract with BL was equal to the standard oral disinfectant, 0.12% CHX.
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Affiliation(s)
- Darika Saitawee
- Department of Periodontology, Faculty of Dentistry, Khon Kaen University, Khon Kaen, Thailand
| | - Aroon Teerakapong
- Department of Periodontology, Faculty of Dentistry, Khon Kaen University, Khon Kaen, Thailand
| | | | | | - Doosadee Hormdee
- Department of Periodontology, Faculty of Dentistry, Khon Kaen University, Khon Kaen, Thailand; Research Group of Chronic Inflammatory Oral Diseases and Systemic Diseases Associated with Oral Health, Faculty of Dentistry, Khon Kaen University, Khon Kaen, Thailand.
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Rat tissue reaction and cytokine production induced by antimicrobial photodynamic therapy. Photodiagnosis Photodyn Ther 2017; 18:315-318. [PMID: 28389372 DOI: 10.1016/j.pdpdt.2017.04.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2017] [Revised: 03/18/2017] [Accepted: 04/03/2017] [Indexed: 11/21/2022]
Abstract
BACKGROUND The antimicrobial photodynamic therapy (aPDT) inactivates the target cell via reactions among the photosensitizer (PS), Laser or Led and O2. The aim of this study was to evaluate the tissue reaction and cytokine production promoted by aPDT with curcumin photosensitizer. METHODS Polyethylene tubes containing saline solution (control), 5% sodium hypochlorite (NaOCl) and aPDT with curcumin PS 500mg/L, were implanted into dorsal connective tissue of Wistar rats. After 7, 15, 30, 60 and 90days of implantation, the animals were euthanized and the tubes with surrounding tissues were removed. The specimens were divided in two part, one half was processed, fixed and prepared for histological analysis by staining with hematoxylin and eosin. The other half was collected for IL-1β and IL-6 cytokine production using ELISA assay. The results were statistically analyzed by Kruskal-Wallis test followed by Dunn test (p<0.05) for tissue reaction and ANOVA followed by Bonferroni's correction (p<0.05) for ELISA. RESULTS All groups showed severe tissue reactions at 7days, whilst a significantly decrease by time was observed. Regarding to cytokine production, aPDT increases the IL-1β levels in all periods of time (p<0.05). However, for IL-6 levels, the highest value was observed with aPDT on the 90th day (p<0.05). CONCLUSIONS aPDT with curcumin PS 500mg/L demonstrated biocompatibility similar to saline solution and induced the IL-1β and IL-6 cytokines production.
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Samiei M, Ghasemi N, Aghazadeh M, Divband B, Akbarzadeh F. Biocompatibility of Mineral Trioxide Aggregate with TiO2 Nanoparticles on Human Gingival Fibroblasts. J Clin Exp Dent 2017; 9:e182-e185. [PMID: 28210432 PMCID: PMC5303314 DOI: 10.4317/jced.53126] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2016] [Accepted: 07/18/2016] [Indexed: 11/29/2022] Open
Abstract
Background The New compositions of white mineral trioxide aggregate (WMTA) or use of various additives like nanoparticles might affect MTA’s ideal characteristics This study was performed to evaluate the cytotoxicity of WMTA and WMTA with Titanium dioxide (TiO2) nanoparticles (1% weight ratio) at different storage times after mixing on human gingival fibroblasts (HGFs). Material and Methods HGFs were obtained from the attached gingiva of human premolars. HGFs were cultured in Dulbecco’s Modified Eagle medium, supplemented with 10% fetal calf serum, penicillin and streptomycin. The cells were exposed to WMTA (groups 1 and 2) and WMTA+TiO2 (groups 3 and 4). The fifth and sixth groups served as controls. Each group contained 15 wells. After 24h (groups 1, 3 and 5) and 48 h (groups 2, 4 and 6) of exposure, HGF viability was determined by Mosmann’s tetrazolium toxicity (MTT) assay. Statistical analysis of the data was performed by using one-way analysis of variance and Tukey post hoc test, with significance of p < 0.05. Results With both materials, the viability of HGFs significantly decrased with increasing the incubation time from 24h to 48 h (P<0.05). There was no significant difference between the materials regarding HGF viability (P>0.05). Conclusions Under the limitations of the present study, incorporation of TiO2 nanoparticles into MTA at 1 wt% had no negative effect on its biocompatibility. Key words:Cytotoxicity, fibroblast, MTA, MTT assay, nanoparticle, TiO2.
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Affiliation(s)
- Mohammad Samiei
- Associate Professor, Department of Endodontics, Dental Faculty, Tabriz University (Medical Sciences), Tabriz, Iran
| | - Negin Ghasemi
- Assistant Professor, Department of Endodontics, Dental and Periodontal Research Center, Dental Faculty, Tabriz University (Medical Sciences), Tabriz, Iran
| | - Marzieh Aghazadeh
- Assistant Professor, Department of Oral Medicine , Dental Faculty, Tabriz University (Medical Sciences), Tabriz, Iran
| | - Baharak Divband
- Assistant Professor, Department of Chemistry, Tabriz University, Tabriz, Iran
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