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Gu R, Fei S, Liu Z, Liu X, Fang X, Wu H, Zhang X, Xu G, Xu F. Effects of photodynamic therapy in patients with infected skin ulcers: A meta-analysis. Int Wound J 2024; 21:e14747. [PMID: 38445778 PMCID: PMC10915826 DOI: 10.1111/iwj.14747] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2024] [Revised: 01/22/2024] [Accepted: 01/23/2024] [Indexed: 03/07/2024] Open
Abstract
The purpose of the meta-analysis was to evaluate and compare the photodynamic therapy's effectiveness in treating infected skin wounds. The results of this meta-analysis were analysed, and the odds ratio (OR) and mean difference (MD) with 95% confidence intervals (CIs) were calculated using dichotomous or contentious random- or fixed-effect models. For the current meta-analysis, 6 examinations spanning from 2013 to 2021 were included, encompassing 154 patients with infected skin wounds were the used studies' starting point. Photodynamic therapy had a significantly lower wound ulcer size (MD, -4.42; 95% CI, -7.56--1.28, p = 0.006), better tissue repair (MD, -8.62; 95% CI, -16.76--0.48, p = 0.04) and lower microbial cell viability (OR, 0.13; 95% CI, 0.04-0.42, p < 0.001) compared with red light exposure in subjects with infected skin wounds. The examined data revealed that photodynamic therapy had a significantly lower wound ulcer size, better tissue repair and lower microbial cell viability compared with red light exposure in subjects with infected skin wounds. However, given that all examinations had a small sample size, consideration should be given to their values.
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Affiliation(s)
- Rui Gu
- Graduate School of Beijing University of Chinese Medicine, Beijing University of Chinese MedicineBeijingChina
| | - Sha'ni Fei
- Graduate School of Beijing University of Chinese Medicine, Beijing University of Chinese MedicineBeijingChina
| | - Zhaoyu Liu
- Graduate School of Beijing University of Chinese Medicine, Beijing University of Chinese MedicineBeijingChina
| | - Xiaoqi Liu
- Graduate School of Beijing University of Chinese Medicine, Beijing University of Chinese MedicineBeijingChina
| | - Xiaoxiao Fang
- Graduate School of Beijing University of Chinese Medicine, Beijing University of Chinese MedicineBeijingChina
| | - Hengjin Wu
- Graduate School of Beijing University of Chinese Medicine, Beijing University of Chinese MedicineBeijingChina
| | - Xia Zhang
- Department of NeurologyPeking University Aerospace School of Clinical MedicineBeijingChina
| | - Guomei Xu
- Department of DermatologyBeijing University of Chinese Medicine Third Affiliated HospitalBeijingChina
| | - Fengquan Xu
- Department of PsychosomaticsGuang'anmen Hospital, China Academy of Chinese Medical SciencesBeijingChina
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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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Parga A, Manoil D, Brundin M, Otero A, Belibasakis GN. Gram-negative quorum sensing signalling enhances biofilm formation and virulence traits in gram-positive pathogen Enterococcus faecalis. J Oral Microbiol 2023; 15:2208901. [PMID: 37187675 PMCID: PMC10177678 DOI: 10.1080/20002297.2023.2208901] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/17/2023] Open
Abstract
Acyl-homoserine lactones (AHLs) are typical quorum-sensing molecules of gram-negative bacteria. Recent evidence suggests that AHLs may also affect gram-positives, although knowledge of these interactions remains scarce. Here, we assessed the effect of AHLs on biofilm formation and transcriptional regulations in the gram-positive Enterococcus faecalis. Five E. faecalis strains were investigated herein. Crystal violet was employed to quantify the biomass formed, and confocal microscopy in combination with SYTO9/PI allowed the visualisation of biofilms' structure. The differential expression of 10 genes involved in quorum-sensing, biofilm formation and stress responses was evaluated using reverse-transcription-qPCR. The AHL exposure significantly increased biofilm production in strain ATCC 29212 and two isolates from infected dental roots, UmID4 and UmID5. In strains ATCC 29212 and UmID7, AHLs up-regulated the quorum-sensing genes (fsrC, cylA), the adhesins ace, efaA and asa1, together with the glycosyltransferase epaQ. In strain UmID7, AHL exposure additionally up-regulated two membrane-stress response genes (σV, groEL) associated with increased stress-tolerance and virulence. Altogether, our results demonstrate that AHLs promote biofilm formation and up-regulate a transcriptional network involved in virulence and stress tolerance in several E. faecalis strains. These data provide yet-unreported insights into E. faecalis biofilm responses to AHLs, a family of molecules long-considered the monopole of gram-negative signalling.
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Affiliation(s)
- Ana Parga
- Department of Microbiology and Parasitology, CIBUS-Faculty of Biology, Universidade de Santiago de Compostela, Santiago de Compostela, Spain
- Division of Oral Diseases, Department of Dental Medicine, Karolinska Institutet, Huddinge, Sweden
| | - Daniel Manoil
- Division of Oral Diseases, Department of Dental Medicine, Karolinska Institutet, Huddinge, Sweden
- Division of cariology and endodontics, University Clinics of Dental Medicine, Faculty of Medicine, University of Geneva, Geneva, Switzerland
- CONTACT Daniel Manoil Division of cariology and endodontics, University Clinics of Dental Medicine, Michel-Servet 1, Geneva1205, Switzerland
| | - Malin Brundin
- Division of Endodontics, Department of Odontology, Umeå University, Umeå, Sweden
| | - Ana Otero
- Department of Microbiology and Parasitology, CIBUS-Faculty of Biology, Universidade de Santiago de Compostela, Santiago de Compostela, Spain
| | - Georgios N. Belibasakis
- Division of Oral Diseases, Department of Dental Medicine, Karolinska Institutet, Huddinge, Sweden
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Photodynamic therapy for treating infected skin wounds: A systematic review and meta-analysis from randomized clinical trials. Photodiagnosis Photodyn Ther 2022; 40:103118. [PMID: 36109003 DOI: 10.1016/j.pdpdt.2022.103118] [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: 06/02/2022] [Revised: 08/16/2022] [Accepted: 09/09/2022] [Indexed: 12/14/2022]
Abstract
BACKGROUND Infected skin wounds represent a public health problem that effects 20 million people worldwide. Photodynamic therapy (PDT) is a treatment option with excellent results against several infections. OBJECTIVE This study aimed to perform a systematic review and meta-analysis on PDT efficacy for treating infected wounds based on randomized clinical trials (RCTs). METHODS PubMed, Scopus, Web of Science, SciELO, and the Cochrane library were searched. The Delphi List criteria and the Revised Cochrane risk-of-bias (Rob 2) were used for evaluating the quality of clinical trials. Meta-analyses were performed with the random-effect model. The odds ratio was the effect measure for binary outcomes, while the standard mean difference was used for continuous outcomes. The trim-and-fill method was used to detect small-study effects. The quality of evidence was verified for each outcome. RESULTS Only four out of 573 articles were selected for the qualitative and quantitative analyses. The most frequent cause of infected wounds was impaired venous circulation (75%). All studies used red LED light. PDT reduced healing time and improved the healing process and wound oxygenation. Patients treated with PDT showed 15% to 17% (p = 0.0003/ I2=0%) lower microbial cell viability in the wound and a significantly smaller wound size (0.72 cm2/p = 0.0187/I2=0%) than patients treated with placebo or red-light exposure. There was a high level of evidence for each meta-analysis outcome. CONCLUSION PDT can be an excellent alternative treatment for infected skin wounds, though larger trials are needed.
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Manoharan RK, Raorane CJ, Ishaque F, Ahn YH. Antimicrobial photodynamic inactivation of wastewater microorganisms by halogenated indole derivative capped zinc oxide. ENVIRONMENTAL RESEARCH 2022; 214:113905. [PMID: 35948149 DOI: 10.1016/j.envres.2022.113905] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2022] [Revised: 06/28/2022] [Accepted: 07/11/2022] [Indexed: 06/15/2023]
Abstract
Novel 5-bromoindole (5B)-capped zinc oxide (ZnO) nanoparticles (5BZN) were synthesized to improve the antibacterial, antibiofilm, and disinfection processes for the control of microorganisms in wastewater treatment. When exposed to 5BZN, the biofilm density and cell attachment were reduced dramatically, as measured by scanning electron microscopy (SEM). The 5BZN were also investigated for photodynamic treatment of multidrug-resistant (MDR) bacteria and toxicity. The combination of 5B and ZnO exhibited strong antibacterial and antibiofilm activities against MDR bacteria even at low doses (20 μg/mL). After 12.5 mW/cm2 blue LED irradiation, the composite 5BZN showed superior photodynamic inactivation of two wastewater MDR, Enterobacter tabaci E2 and Klebsiella quasipneumoniae SC3, with cell densities reduced by 3.9 log CFU/mL and 4.7 log CFU/mL, respectively, after 120 min. The mechanism of bacterial inactivation was studied using a scavenging investigation, and H2O2 was identified mainly as the reactive species for bacterial inactivation. The 5BZN exhibited higher photodynamic inactivation towards the total coliform bacteria in wastewater effluents under a blue LED light intensity of 12.5 mW/cm2 with almost complete inactivation of the coliform bacteria cells within 40 min. Furthermore, when 5BZN (100 mg/L) was added to the reactor, the level of tetracycline antibiotic degradation was increased by 63.6% after 120 min. The toxicity test, animal model nematode studies and seed germination assays, showed that 5BZN is harmless, highlighting its tremendous potential as a self-healing agent in large-scale photodynamic disinfection processes.
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Affiliation(s)
| | | | - Fahmida Ishaque
- Department of Civil Engineering, Yeungnam University, Gyeongsan, 38541, Republic of Korea
| | - Young-Ho Ahn
- Department of Civil Engineering, Yeungnam University, Gyeongsan, 38541, Republic of Korea.
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Staneva D, Yordanova S, Vasileva-Tonkova E, Stoyanov S, Grabchev I. Photophysical and antibacterial activity of light-activated quaternary eosin Y. OPEN CHEM 2019. [DOI: 10.1515/chem-2019-0135] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
AbstractThe functional characteristics of a new eosin dye with biocidal quaternary ammonium group (E) were studied in aqueous solution and in organic solvents of different polarity. The spectral properties depend on the nature and polarity of the respective solvents. The antimicrobial activity of compound E has been tested in vitro against Gram-negative bacteria (Escherichia coli, Acinetobacter johnsoni and Pseudomonas aeruginosa), Gram-positive bacteria (Sarcina lutea and Bacillus cereus) and the antifungal activity was tested against the yeasts Candida lipolytica in solution and after treated on cotton fabric. Broth dilution test has been used for quantitative evaluation of the antimicrobial activity of compound E against the model strains. The ability of compound E to inhibit the growth of model Gram-negative P. aeruginosa strain was assessed after 16 h of incubation in presence and absence of light. These experiments were conducted in planktonic format in solution and on cotton fabric. The results suggest that the new compound is effective in treating the relevant pathogens with better results being obtained by irradiation with light. In this case the quaternary ammonium group promotes the binding of eosin Y moiety to the bacterial cell wall thus accelerating bacterial photo inactivation.
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Affiliation(s)
- Desislava Staneva
- University of Chemical Technology and Metallurgy, 1756 Sofia, Bulgaria
| | - Stanislava Yordanova
- Sofia University “St. Kliment Ohridski”, Faculty of Chemistry and Pharmacy, 1164 Sofia, Bulgaria
| | - Evgenia Vasileva-Tonkova
- The Stephan Angeloff Institute of Microbiology, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria
| | - Stanimir Stoyanov
- Sofia University “St. Kliment Ohridski”, Faculty of Chemistry and Pharmacy, 1164 Sofia, Bulgaria
| | - Ivo Grabchev
- Sofia University “St. Kliment Ohridski”, Faculty of Medicine, 1407 Sofia, Bulgaria
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Bordea IR, Hanna R, Chiniforush N, Grădinaru E, Câmpian RS, Sîrbu A, Amaroli A, Benedicenti S. Evaluation of the outcome of various laser therapy applications in root canal disinfection: A systematic review. Photodiagnosis Photodyn Ther 2019; 29:101611. [PMID: 31809911 DOI: 10.1016/j.pdpdt.2019.101611] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Revised: 08/24/2019] [Accepted: 10/11/2019] [Indexed: 01/13/2023]
Abstract
BACKGROUND Any successful endodontic therapy requires elimination of the endodontic biofilms through meticulous root canal disinfection methods. Sodium hypochlorite (NaOCl) and ethylenediaminetetraacetic acid (EDTA) are the most common effective irrigants, in removing smear-layer from the coronal and middle thirds of the dental canals but reduced considerably towards the apical one third. In recent years, newly alternative treatment modalities have been proposed, including high-power lasers and antimicrobial photodynamic therapy (aPDT). Our work was conducted to evalaute the outcome of root canal disinfection in relation to the efficacy of various treatment modalities. Furthermore, every effort was made to present an overview of the aPDT outcomes, as a model for this application, and to propose laser parameters protocol with positive results. METHODS The electronic databases PubMed was searched from January 2013- January 2019. Our inclusive criteria based on laser therapy applications, as a model for root canal disinfection. The search terms utilised various combinations as follows: photodynamic therapy or antimicrobial photodynamic therapy or photoactivated disinfection or light activated disinfection or laser activated disinfection or laser therapy, and endodontic. RESULTS The results of this systematic review concluded that the effectiveness of aPDT and various laser wavelengths protocols, in removing endodontic biofilms from infected root canals, remains unattainable. CONCLUSIONS Study concluded that the combination of aPDT with antimicrobial irrigants could provide a synergetic effect. However, due to the heterogeneity of the selected studies and their limitations, in terms of lack of standardised protocol or discrepancy in the methodology, authors suggest further validated approaches to achieve optimal outcomes.
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Affiliation(s)
- Ioana Roxana Bordea
- Department of Oral Rehabilitation, Oral Health and Dental Office Management, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Reem Hanna
- Department of Surgical and Diagnostic Sciences (D.I.S.C), Laser Therapy Centre, University of Genoa, Genoa, Italy; Department of Oral Surgery, Dental Institute, King's College Hospital NHS Foundation Trust, Denmark Hill, London SE5 9RS, UK.
| | - Nasim Chiniforush
- Laser Research Center of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
| | - Elena Grădinaru
- Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Radu Septimiu Câmpian
- Department of Oral Rehabilitation, Oral Health and Dental Office Management, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Adina Sîrbu
- Department of Oral Rehabilitation, Oral Health and Dental Office Management, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Andrea Amaroli
- Department of Surgical and Diagnostic Sciences (D.I.S.C), Laser Therapy Centre, University of Genoa, Genoa, Italy
| | - Stefano Benedicenti
- Department of Surgical and Diagnostic Sciences (D.I.S.C), Laser Therapy Centre, University of Genoa, Genoa, Italy
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Kadam S, Shai S, Shahane A, Kaushik KS. Recent Advances in Non-Conventional Antimicrobial Approaches for Chronic Wound Biofilms: Have We Found the 'Chink in the Armor'? Biomedicines 2019; 7:biomedicines7020035. [PMID: 31052335 PMCID: PMC6631124 DOI: 10.3390/biomedicines7020035] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2019] [Revised: 04/27/2019] [Accepted: 04/28/2019] [Indexed: 12/19/2022] Open
Abstract
Chronic wounds are a major healthcare burden, with huge public health and economic impact. Microbial infections are the single most important cause of chronic, non-healing wounds. Chronic wound infections typically form biofilms, which are notoriously recalcitrant to conventional antibiotics. This prompts the need for alternative or adjunct ‘anti-biofilm’ approaches, notably those that account for the unique chronic wound biofilm microenvironment. In this review, we discuss the recent advances in non-conventional antimicrobial approaches for chronic wound biofilms, looking beyond standard antibiotic therapies. These non-conventional strategies are discussed under three groups. The first group focuses on treatment approaches that directly kill or inhibit microbes in chronic wound biofilms, using mechanisms or delivery strategies distinct from antibiotics. The second group discusses antimicrobial approaches that modify the biological, chemical or biophysical parameters in the chronic wound microenvironment, which in turn enables the disruption and removal of biofilms. Finally, therapeutic approaches that affect both, biofilm bacteria and microenvironment factors, are discussed. Understanding the advantages and limitations of these recent approaches, their stage of development and role in biofilm management, could lead to new treatment paradigms for chronic wound infections. Towards this end, we discuss the possibility that non-conventional antimicrobial therapeutics and targets could expose the ‘chink in the armor’ of chronic wound biofilms, thereby providing much-needed alternative or adjunct strategies for wound infection management.
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Affiliation(s)
- Snehal Kadam
- Ramalingaswami Re-entry Fellowship, Department of Biotechnology, Pune 411045, India.
| | - Saptarsi Shai
- Poona College of Pharmacy, Bharati Vidyapeeth Deemed (to be) University, Erandwane, Pune 411038, India.
| | - Aditi Shahane
- Poona College of Pharmacy, Bharati Vidyapeeth Deemed (to be) University, Erandwane, Pune 411038, India.
| | - Karishma S Kaushik
- Ramalingaswami Re-entry Fellowship, Department of Biotechnology, Pune 411045, India.
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Dobos A, Steiger W, Theiner D, Gruber P, Lunzer M, Van Hoorick J, Van Vlierberghe S, Ovsianikov A. Screening of two-photon activated photodynamic therapy sensitizers using a 3D osteosarcoma model. Analyst 2019; 144:3056-3063. [DOI: 10.1039/c9an00068b] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
An in vitro screening platform for high-throughput profiling and comparison of two-photon photodynamic therapy sensitizers was established.
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Affiliation(s)
- Agnes Dobos
- TU Wien
- Institute of Materials Science and Technology
- 1060 Vienna
- Austria
- Austrian Cluster for Tissue Regeneration
| | - Wolfgang Steiger
- TU Wien
- Institute of Materials Science and Technology
- 1060 Vienna
- Austria
- Austrian Cluster for Tissue Regeneration
| | - Dominik Theiner
- TU Wien
- Institute of Materials Science and Technology
- 1060 Vienna
- Austria
| | - Peter Gruber
- TU Wien
- Institute of Materials Science and Technology
- 1060 Vienna
- Austria
- Austrian Cluster for Tissue Regeneration
| | - Markus Lunzer
- TU Wien
- Institute of Materials Science and Technology
- 1060 Vienna
- Austria
- Austrian Cluster for Tissue Regeneration
| | - Jasper Van Hoorick
- Ghent University
- Polymer Chemistry and Biomaterials Group
- Centre of Macromolecular Chemistry
- 9000 Ghent
- Belgium
| | - Sandra Van Vlierberghe
- Ghent University
- Polymer Chemistry and Biomaterials Group
- Centre of Macromolecular Chemistry
- 9000 Ghent
- Belgium
| | - Aleksandr Ovsianikov
- TU Wien
- Institute of Materials Science and Technology
- 1060 Vienna
- Austria
- Austrian Cluster for Tissue Regeneration
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Pereira LS, Camacho SA, Malfatti-Gasperini AA, Jochelavicius K, Nobre TM, Oliveira ON, Aoki PH. Evidence of photoinduced lipid hydroperoxidation in Langmuir monolayers containing Eosin Y. Colloids Surf B Biointerfaces 2018; 171:682-689. [DOI: 10.1016/j.colsurfb.2018.08.002] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2018] [Revised: 07/20/2018] [Accepted: 08/03/2018] [Indexed: 01/01/2023]
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11
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Cieplik F, Steinwachs VS, Muehler D, Hiller KA, Thurnheer T, Belibasakis GN, Buchalla W, Maisch T. Phenalen-1-one-Mediated Antimicrobial Photodynamic Therapy: Antimicrobial Efficacy in a Periodontal Biofilm Model and Flow Cytometric Evaluation of Cytoplasmic Membrane Damage. Front Microbiol 2018; 9:688. [PMID: 29681899 PMCID: PMC5897782 DOI: 10.3389/fmicb.2018.00688] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2018] [Accepted: 03/23/2018] [Indexed: 01/18/2023] Open
Abstract
In light of increasing resistance toward conventional antibiotics and antiseptics, antimicrobial photodynamic therapy (aPDT) may be a valuable alternative, especially for use in dentistry. In this regard, photosensitizers (PS) based on a phenalen-1-one structure seem to be especially favorable due to their high singlet oxygen quantum yield. However, the actual target structures of phenalen-1-one-mediated aPDT are still unclear. The aim of the present study was to investigate the antimicrobial efficacy of aPDT mediated by phenalen-1-one derivatives SAPYR and SAGUA for inactivation of a polymicrobial biofilm consisting of three putative periodontal pathogens in vitro and to get first insights in the mechanism of action of phenalen-1-one-mediated aPDT by assessing damage of cytoplasmic membranes. aPDT with SAPYR exhibited identical antimicrobial efficacy as compared to chlorhexidine (CHX) [4.4-6.1 log10 reduction of colony forming units (CFUs) depending on bacterial species] while aPDT with SAGUA was less effective (2.0-2.8 log10). Flow cytometric analysis combined with propidium iodide (PI) staining revealed no damage of cytoplasmic membranes after aPDT with both phenalen-1-one derivatives, which was confirmed by spectroscopic measurements for release of nucleic acids after treatment. Spectrophotometric PS-uptake measurements showed no uptake of SAPYR by bacterial cells. Despite the inability to pinpoint the actual target of phenalen-1-one-mediated aPDT, this study shows the high antimicrobial potential of phenalen-1-on mediated aPDT (especially when using SAPYR) and represents a first step for getting insights in the mechanism and damage patterns of aPDT with this class of PS.
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Affiliation(s)
- Fabian Cieplik
- Department of Conservative Dentistry and Periodontology, University Medical Center Regensburg, Regensburg, Germany
| | - Viktoria-Sophia Steinwachs
- Department of Conservative Dentistry and Periodontology, University Medical Center Regensburg, Regensburg, Germany
| | - Denise Muehler
- Department of Conservative Dentistry and Periodontology, University Medical Center Regensburg, Regensburg, Germany
| | - Karl-Anton Hiller
- Department of Conservative Dentistry and Periodontology, University Medical Center Regensburg, Regensburg, Germany
| | - Thomas Thurnheer
- Division of Oral Microbiology and Immunology, Clinic of Preventive Dentistry, Periodontology and Cariology, Center of Dental Medicine, University of Zurich, Zurich, Switzerland
| | - Georgios N Belibasakis
- Division of Oral Diseases, Department of Dental Medicine, Karolinska Institutet, Solna, Sweden
| | - Wolfgang Buchalla
- Department of Conservative Dentistry and Periodontology, University Medical Center Regensburg, Regensburg, Germany
| | - Tim Maisch
- Department of Dermatology, University Medical Center Regensburg, Regensburg, Germany
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12
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Bonin E, dos Santos A, Fiori da Silva A, Ribeiro L, Favero M, Campanerut-Sá P, de Freitas C, Caetano W, Hioka N, Mikcha J. Photodynamic inactivation of foodborne bacteria by eosin Y. J Appl Microbiol 2018; 124:1617-1628. [DOI: 10.1111/jam.13727] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2017] [Revised: 01/20/2018] [Accepted: 01/27/2018] [Indexed: 12/15/2022]
Affiliation(s)
- E. Bonin
- Programa de Pós-Graduação em Ciência de Alimentos; Universidade Estadual de Maringá; Maringá PR Brazil
| | - A.R. dos Santos
- Programa de Pós-Graduação em Ciência de Alimentos; Universidade Estadual de Maringá; Maringá PR Brazil
| | - A. Fiori da Silva
- Programa de Pós-Graduação em Ciências da Saúde; Universidade Estadual de Maringá; Maringá PR Brazil
| | - L.H. Ribeiro
- Curso de Engenharia de Alimentos; Departamento de Engenharia de Alimentos; Universidade Estadual de Maringá; Maringá PR Brazil
| | - M.E. Favero
- Departamento de Patologia; Análises Clínicas e Toxicológicas; Universidade Estadual de Londrina; Londrina PR Brazil
| | - P.A.Z. Campanerut-Sá
- Departamento de Análises Clínicas e Biomedicina; Universidade Estadual de Maringá; Maringá PR Brazil
| | - C.F. de Freitas
- Programa de Pós-Graduação em Química; Departamento de Química; Universidade Estadual de Maringá; Maringá PR Brazil
| | - W. Caetano
- Programa de Pós-Graduação em Química; Departamento de Química; Universidade Estadual de Maringá; Maringá PR Brazil
- Departamento de Química; Universidade Estadual de Maringá; Maringá PR Brazil
| | - N. Hioka
- Programa de Pós-Graduação em Química; Departamento de Química; Universidade Estadual de Maringá; Maringá PR Brazil
- Departamento de Química; Universidade Estadual de Maringá; Maringá PR Brazil
| | - J.M.G. Mikcha
- Programa de Pós-Graduação em Ciência de Alimentos; Universidade Estadual de Maringá; Maringá PR Brazil
- Programa de Pós-Graduação em Ciências da Saúde; Universidade Estadual de Maringá; Maringá PR Brazil
- Departamento de Análises Clínicas e Biomedicina; Universidade Estadual de Maringá; Maringá PR Brazil
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Janani M, Jafari F, Samiei M, Lotfipour F, Nakhlband A, Ghasemi N, Salari T. Evaluation of Antibacterial Efficacy of Photodynamic Therapy vs. 2.5% NaOCl against E. faecalis-infected Root Canals Using Real-time PCR Technique. J Clin Exp Dent 2017; 9:e539-e544. [PMID: 28469819 PMCID: PMC5410674 DOI: 10.4317/jced.53526] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2016] [Accepted: 11/27/2016] [Indexed: 12/01/2022] Open
Abstract
Background Bacteria like E. faecalis can produce intra- and extra-radicular biofilms. Theoretically, the adjustable penetration ability of lasers enables better access to root canal system. Therefore the aim of the present study was to compare the ability of photoactivated laser and 2.5% NaOCl irrigation solution to eliminate E. faecalis from the root canals by real-time PCR technique. Material and Methods Sixty extracted human upper central incisors were selected and sterilized in an autoclave. The root canals were infected with E. faecalis (PTCC 1237, Persian Type Culture Collection, Iran) and then incubated for 24 hours. The samples were randomly divided into 3 groups. No intervention was made in the control group (group 1). In group 2, laser therapy was performed with a power of 100 mW by diode laser for 120 seconds. In group 3, the canals were irrigated with 5 mL of 2.5% NaOCl; then all the samples were sonicated in 15 mL of normal saline in test tubes in order to isolate the bacteria. DNA extraction was performed followed by real-time PCR technique for all the samples. Results Inhibition of bacterial growth in all the experimental samples was significantly more than that in the control group. There was a significant difference between photodynamic therapy and 2.5% NaOCl. The effect of NaOCl in all the samples was better than photodynamic therapy. The results of the mean CT (cyclic threshold) were 40, 30.2 and 15.35 for 2.5% NaOCl, photodynamic therapy and control group, respectively. Conclusions Based on the results of this experimental study, 2.5% NaOCl eliminated E. faecalis from infected root canals more effectively compared to photodynamic therapy. Key words:Photoactivated laser, Enterococcus faecalis, antibacterial agents, sodium hypochlorite.
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Affiliation(s)
- Maryam Janani
- Assistant Professor, Endodontics Department, Dentistry Faculty, Tabriz University of Medical Sciences
| | - Farnaz Jafari
- Department of Endodontics, Dental School, Tabriz Branch, Islamic Azad University
| | - Mohammad Samiei
- Associate Professor, Endodontics Department, Dentistry Faculty, Tabriz University of Medical Sciences
| | - Farzaneh Lotfipour
- Professor, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Ailar Nakhlband
- Research Center for Pharmaceutical nanotechnology, Tabriz University of Medical Sciences
| | - Negin Ghasemi
- Assistant Professor, Endodontics Department, Dentistry Faculty, Tabriz University of Medical Sciences
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Prażmo EJ, Godlewska RA, Mielczarek AB. Effectiveness of repeated photodynamic therapy in the elimination of intracanal Enterococcus faecalis biofilm: an in vitro study. Lasers Med Sci 2017; 32:655-661. [PMID: 28185089 PMCID: PMC5360838 DOI: 10.1007/s10103-017-2164-3] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2016] [Accepted: 01/31/2017] [Indexed: 12/19/2022]
Abstract
The study aimed to investigate the effectiveness of photodynamic therapy in the elimination of intracanal Enterococcus faecalis biofilm and to analyse how a repeated light irradiation, replenishment of oxygen and photosensitiser affect the results of the photodynamic disinfecting protocol. After chemomechanical preparation, 46 single-rooted human teeth were infected with a clinical strain of E. faecalis and incubated for a week in microaerobic conditions. The experimental procedures included groups of single application of photodynamic therapy, two cycles of PDT, irrigation with 5.25% NaOCl solution and negative and positive control. The number of residing bacterial colonies in the root canals was determined based on the CFU/ml method. In the group of preparations irrigated with NaOCl, bacterial colonies were not observed. A single PDT eliminated 45% of the initial CFU/ml. Repeated PDT eradicated 95% of the intracanal bacterial biofilm. Photodynamic therapy has a high potential for the elimination of E. faecalis biofilm. There is a safe therapeutic window where photoinduced disinfection can be used as an adjuvant to conventional endodontic treatment, which remains the most effective.
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Affiliation(s)
- Ewa Joanna Prażmo
- Department of Conservative Dentistry, Medical University of Warsaw, Miodowa Street 18, 02-797, Warsaw, Poland.
| | - Renata Alicja Godlewska
- Department of Bacterial Genetics, Faculty of Biology, University of Warsaw, Miecznikowa Street 1, 02-096, Warsaw, Poland
| | - Agnieszka Beata Mielczarek
- Department of Conservative Dentistry, Medical University of Warsaw, Miodowa Street 18, 02-797, Warsaw, Poland
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15
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Sautrot-Ba P, Contreras A, Abbad Andaloussi S, Coradin T, Hélary C, Razza N, Sangermano M, Mazeran PE, Malval JP, Versace DL. Eosin-mediated synthesis of polymer coatings combining photodynamic inactivation and antimicrobial properties. J Mater Chem B 2017; 5:7572-7582. [DOI: 10.1039/c7tb01358b] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Eosin-derived coatings exhibiting photodynamic bacterial inactivation and antibacterial properties.
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Affiliation(s)
- P. Sautrot-Ba
- Université Paris-Est Créteil (UPEC) – ICMPE UMR CNRS 7182
- 94010 Créteil cedex
- France
| | - A. Contreras
- Université Paris-Est Créteil (UPEC) – ICMPE UMR CNRS 7182
- 94010 Créteil cedex
- France
| | | | - T. Coradin
- Sorbonne Universités
- UPMC Univ Paris 06
- CNRS
- Collège de France
- UMR 7574
| | - C. Hélary
- Sorbonne Universités
- UPMC Univ Paris 06
- CNRS
- Collège de France
- UMR 7574
| | - N. Razza
- Politecnico di Torino
- Dipartimento di Scienza Applicata e Tecnologia
- 10129 Torino
- Italy
| | - M. Sangermano
- Politecnico di Torino
- Dipartimento di Scienza Applicata e Tecnologia
- 10129 Torino
- Italy
| | - P.-E. Mazeran
- Laboratoire Roberval
- CNRS
- UMR 7337
- Sorbonne Universités
- Université de technologie de Compiègne
| | - J.-P. Malval
- Institut de Science des Matériaux de Mulhouse
- IS2M-LRC 7228
- 68057 Mulhouse
- France
| | - D.-L. Versace
- Université Paris-Est Créteil (UPEC) – ICMPE UMR CNRS 7182
- 94010 Créteil cedex
- France
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