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Bousnaki M, Bakopoulou A, Grivas I, Bekiari C, Pich A, Rizk M, Keklikoglou K, Papachristou E, Papadopoulos GC, Kritis A, Mikos AG, Koidis P. Managing Temporomandibular Joint Osteoarthritis by Dental Stem Cell Secretome. Stem Cell Rev Rep 2023; 19:2957-2979. [PMID: 37751010 PMCID: PMC10661765 DOI: 10.1007/s12015-023-10628-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/06/2023] [Indexed: 09/27/2023]
Abstract
The potential therapeutic role of the Dental Pulp Stem Cells Secretome (SECR) in a rat model of experimentally induced Temporomandibular Joint (TMJ) Osteoarthritis (OA) was evaluated. Proteomic profiling of the human SECR under specific oxygen tension (5% O2) and stimulation with Tumor Necrosis Factor-alpha (TNF-α) was performed. SECR and respective cell lysates (CL) samples were collected and subjected to SDS-PAGE, followed by LC-MS/MS analysis. The identified proteins were analyzed with Bioinformatic tools. The anti-inflammatory properties of SECR were assessed via an in vitro murine macrophages model, and were further validated in vivo, in a rat model of chemically-induced TMJ-OA by weekly recording of the head withdrawal threshold, the food intake, and the weight change, and radiographically and histologically at 4- and 8-weeks post-treatment. SECR analysis revealed the presence of 50 proteins that were enriched and/or statistically significantly upregulated compared to CL, while many of those proteins were involved in pathways related to "extracellular matrix organization" and "immune system". SECR application in vitro led to a significant downregulation on the expression of pro-inflammatory genes (MMP-13, MMP-9, MMP-3 and MCP-1), while maintaining an increased expression of IL-10 and IL-6. SECR application in vivo had a significant positive effect on all the clinical parameters, resulting in improved food intake, weight, and pain suppression. Radiographically, SECR application had a significant positive effect on trabecular bone thickness and bone density compared to the saline-treated group. Histological analysis indicated that SECR administration reduced inflammation, enhanced ECM and subchondral bone repair and regeneration, thus alleviating TMJ degeneration.
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Affiliation(s)
- Maria Bousnaki
- Department of Prosthodontics, School of Dentistry, Faculty of Health Sciences (FHS), Aristotle University of Thessaloniki (AUTh), 54124, Thessaloniki, Greece
| | - Athina Bakopoulou
- Department of Prosthodontics, School of Dentistry, Faculty of Health Sciences (FHS), Aristotle University of Thessaloniki (AUTh), 54124, Thessaloniki, Greece
| | - Ioannis Grivas
- Department of Anatomy, Histology & Embryology, School of Veterinary Medicine, Aristotle University of Thessaloniki (AUTh), 54124, Thessaloniki, Greece
| | - Chrysa Bekiari
- Department of Anatomy, Histology & Embryology, School of Veterinary Medicine, Aristotle University of Thessaloniki (AUTh), 54124, Thessaloniki, Greece
| | - Andreas Pich
- Research Core Unit Proteomics &, Institute of Toxicology, Hannover Medical School, 30625, Hannover, Germany
| | - Marta Rizk
- Department for Preventive Dentistry, Periodontology and Cariology, University Medical Center Göttingen, 37073, Göttingen, Germany
| | - Kleoniki Keklikoglou
- Institute of Marine Biology, Biotechnology and Aquaculture (IMBBC), Hellenic Centre for Marine Research (HCMR), Thalassocosmos, P.O. Box 2214, 71003, Heraklion, Crete, Greece
- Biology Department, University of Crete, 70013, Heraklion, Crete, Greece
| | - Eleni Papachristou
- Department of Prosthodontics, School of Dentistry, Faculty of Health Sciences (FHS), Aristotle University of Thessaloniki (AUTh), 54124, Thessaloniki, Greece
| | - Georgios C Papadopoulos
- Department of Anatomy, Histology & Embryology, School of Veterinary Medicine, Aristotle University of Thessaloniki (AUTh), 54124, Thessaloniki, Greece
| | - Aristeidis Kritis
- Department of Physiology and Pharmacology, School of Medicine, Faculty of Health Sciences (FHS), Aristotle University of Thessaloniki (AUTh), 54124, Thessaloniki, Greece
| | - Antonios G Mikos
- Department of Bioengineering, Rice University, Houston, TX, 77030, USA
| | - Petros Koidis
- Department of Prosthodontics, School of Dentistry, Faculty of Health Sciences (FHS), Aristotle University of Thessaloniki (AUTh), 54124, Thessaloniki, Greece.
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Tsamesidis I, Theocharidou A, Beketova A, Bousnaki M, Chatzimentor I, Pouroutzidou GK, Gkiliopoulos D, Kontonasaki E. Artemisinin Loaded Cerium-Doped Nanopowders Improved In Vitro the Biomineralization in Human Periodontal Ligament Cells. Pharmaceutics 2023; 15:pharmaceutics15020655. [PMID: 36839977 PMCID: PMC9962187 DOI: 10.3390/pharmaceutics15020655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 02/03/2023] [Accepted: 02/10/2023] [Indexed: 02/17/2023] Open
Abstract
BACKGROUND A promising strategy to enhance bone regeneration is the use of bioactive materials doped with metallic ions with therapeutic effects and their combination with active substances and/or drugs. The aim of the present study was to investigate the osteogenic capacity of human periodontal ligament cells (hPDLCs) in culture with artemisinin (ART)-loaded Ce-doped calcium silicate nanopowders (NPs); Methods: Mesoporous silica, calcium-doped and calcium/cerium-doped silicate NPs were synthesized via a surfactant-assisted cooperative self-assembly process. Human periodontal ligament cells (hPDLCs) were isolated and tested for their osteogenic differentiation in the presence of ART-loaded and unloaded NPs through alkaline phosphatase (ALP) activity and Alizarine red S staining, while their antioxidant capacity was also evaluated; Results: ART promoted further the osteogenic differentiation of hPDLCs in the presence of Ce-doped NPs. Higher amounts of Ce in the ART-loaded NPs inversely affected the mineral deposition process by the hPDLCs. ART and Ce in the NPs have a synergistic role controlling the redox status and reducing ROS production from the hPDLCs; Conclusions: By monitoring the Ce amount and ART concentration, mesoporous NPs with optimum properties can be developed towards bone tissue regeneration demonstrating also potential application in periodontal tissue regeneration strategies.
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Affiliation(s)
- Ioannis Tsamesidis
- Department of Prosthodontics, School of Dentistry, Faculty of Health Sciences, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece
- Correspondence: or
| | - Anna Theocharidou
- Department of Prosthodontics, School of Dentistry, Faculty of Health Sciences, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece
| | - Anastasia Beketova
- Department of Prosthodontics, School of Dentistry, Faculty of Health Sciences, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece
| | - Maria Bousnaki
- Department of Prosthodontics, School of Dentistry, Faculty of Health Sciences, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece
| | - Iason Chatzimentor
- Department of Prosthodontics, School of Dentistry, Faculty of Health Sciences, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece
| | - Georgia K. Pouroutzidou
- Department of Prosthodontics, School of Dentistry, Faculty of Health Sciences, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece
- Laboratory of Advanced Materials and Devices (AMDeLab), School of Physics, Faculty of Sciences, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece
| | - Dimitrios Gkiliopoulos
- Laboratory of Chemical and Environmental Technology, Department of Chemistry, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece
| | - Eleana Kontonasaki
- Department of Prosthodontics, School of Dentistry, Faculty of Health Sciences, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece
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Bousnaki M, Beketova A, Kontonasaki E. A Review of In Vivo and Clinical Studies Applying Scaffolds and Cell Sheet Technology for Periodontal Ligament Regeneration. Biomolecules 2022; 12:435. [PMID: 35327627 PMCID: PMC8945901 DOI: 10.3390/biom12030435] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2022] [Revised: 03/06/2022] [Accepted: 03/08/2022] [Indexed: 12/14/2022] Open
Abstract
Different approaches to develop engineered scaffolds for periodontal tissues regeneration have been proposed. In this review, innovations in stem cell technology and scaffolds engineering focused primarily on Periodontal Ligament (PDL) regeneration are discussed and analyzed based on results from pre-clinical in vivo studies and clinical trials. Most of those developments include the use of polymeric materials with different patterning and surface nanotopography and printing of complex and sophisticated multiphasic composite scaffolds with different compartments to accomodate for the different periodontal tissues' architecture. Despite the increased effort in producing these scaffolds and their undoubtable efficiency to guide and support tissue regeneration, appropriate source of cells is also needed to provide new tissue formation and various biological and mechanochemical cues from the Extraccellular Matrix (ECM) to provide biophysical stimuli for cell growth and differentiation. Cell sheet engineering is a novel promising technique that allows obtaining cells in a sheet format while preserving ECM components. The right combination of those factors has not been discovered yet and efforts are still needed to ameliorate regenerative outcomes towards the functional organisation of the developed tissues.
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Affiliation(s)
| | | | - Eleana Kontonasaki
- Department of Prosthodontics, School of Dentistry, Faculty of Health Sciences, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece; (M.B.); (A.B.)
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Bousnaki M, Bakopoulou A, Pich A, Papachristou E, Kritis A, Koidis P. Mapping the Secretome of Dental Pulp Stem Cells Under Variable Microenvironmental Conditions. Stem Cell Rev Rep 2021; 18:1372-1407. [PMID: 34553309 DOI: 10.1007/s12015-021-10255-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/27/2021] [Indexed: 12/31/2022]
Abstract
There is substantial evidence supporting the anti-inflammatory and regenerative potential of dental pulp stem cells (DPSCs) through direct cell transplantation or paracrine action. However, DPSC secretome profile remains inadequately studied. This study provides proteomic profiling of the human DPSC secretome by comparatively analysising cell lysates and respective culture supernatants (i.e. conditioned media-CM) under variable oxygen tension conditions (normoxia-20% O2/CM_Norm vs. hypoxia 2% O2/CM_Hyp) and/or stimulation with Tumor Necrosis Factor alpha (TNF-α). DPSC-CM samples and respective crude lysates (DPSC-CL) were collected and subjected to SDS-PAGE, followed by LC-MS/MS analysis. The identified proteins were analyzed by Gene Ontology, Reactome, and String databases. The anti-inflammatory properties of DPSC-CMs were validated via an in vitro RAW_246.7 murine macrophages model through evaluation of the expression of pro-and anti-inflammatory markers by real-time PCR. Results showed a total of 2413 proteins identified in CM_Norm, 2479 in CM_Norm+TNF-α, 1642 in CM_Hyp, and 2002 in CM_Hyp + TNF-α samples. CM_Norm contained 122 proteins statistically significantly upregulated compared to the CM_Hyp and involved in pathways related to "ECM organization", "cellular response to hypoxia", and "IL signaling". Functional network analysis showed that TGFβ1, TIMP1 and TIMP2 were key nodes among proteins significantly upregulated in the CM_Norm compared to the CM_Hyp, interacting with more than 10 proteins, each. DPSC-CM application in the in vitro RAW_246.7 model decreased the expression of pro-inflammatory markers (MMP-3, MMP-9, MMP-13, MCP-1), while increasing anti-inflammatory markers (IL-10). Overall, DPSC-CM collected under normoxic conditions is enriched with anti-inflammatory, tissue repair and regenerative factors, which prompts further investigation on its therapeutic applications.
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Affiliation(s)
- M Bousnaki
- Department of Prosthodontics, School of Dentistry, Faculty of Health Sciences (FHS), Aristotle University of Thessaloniki (AUTh), GR-54124, Thessaloniki, Greece
| | - A Bakopoulou
- Department of Prosthodontics, School of Dentistry, Faculty of Health Sciences (FHS), Aristotle University of Thessaloniki (AUTh), GR-54124, Thessaloniki, Greece.
| | - A Pich
- Research Core Unit Proteomics & Institute of Toxicology, Hannover Medical School, 30625, Hannover, Germany
| | - E Papachristou
- Department of Prosthodontics, School of Dentistry, Faculty of Health Sciences (FHS), Aristotle University of Thessaloniki (AUTh), GR-54124, Thessaloniki, Greece
| | - A Kritis
- Department of Physiology and Pharmacology, School of Medicine, Faculty of Health Sciences (FHS), Aristotle University of Thessaloniki (AUTh), Thessaloniki, Greece
| | - P Koidis
- Department of Prosthodontics, School of Dentistry, Faculty of Health Sciences (FHS), Aristotle University of Thessaloniki (AUTh), GR-54124, Thessaloniki, Greece.
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Bousnaki M, Chatziparaskeva M, Bakopoulou A, Pissiotis A, Koidis P. Variables affecting the fit of zirconia fixed partial dentures: A systematic review. J Prosthet Dent 2019; 123:686-692.e8. [PMID: 31703922 DOI: 10.1016/j.prosdent.2019.06.019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2018] [Revised: 06/02/2019] [Accepted: 06/03/2019] [Indexed: 10/25/2022]
Abstract
STATEMENT OF PROBLEM Different parameters affect the marginal and internal fit of zirconia fixed partial dentures (FPDs) on natural teeth. Determining a way to optimize these restorations is essential. PURPOSE The purpose of this systematic review was to determine the variables affecting the marginal fit and internal accuracy of zirconia FPDs on natural teeth. MATERIAL AND METHODS An electronic search was conducted by 2 independent reviewers by using the MEDLINE, Cochrane, Web of Science, and Scopus databases, as well as Google Scholar, for studies published up to July 2018, and a manual search was conducted from the reference lists of related articles. Eligibility criteria included articles in English published in peer-reviewed journals that assessed the marginal and/or internal adaptation of zirconia FPDs on teeth with 3 or more units, with at least 1 of the experimental groups being frameworks or FPDs fabricated from zirconia. Risk of bias was assessed with the aid of the Cochrane Handbook for Systematic Reviews of Interventions. RESULTS The search provided 418 records, with 41 fulfilling the inclusion criteria. The selected studies showed considerable heterogeneity regarding materials, state of sintering, manufacturer and computer-aided design and computer-aided manufacturing (CAD-CAM) system, experimental methodology, sample size, and span length. Of the included articles, 36 were in vitro studies and 5 were clinical studies, most of which exhibited high-performance and detection biases. CAD-CAM systems provided more precise marginal and internal fit than CAM systems. An increase of framework span length to 6 or more units decreased both marginal and internal fit. The reported marginal gap tended to increase after the veneering process. The introduction of a conventional impression into an otherwise digital workflow seems to have a negative effect on the marginal fit. CONCLUSIONS The accuracy of zirconia FPDs or frameworks is considerably influenced by the processing procedure used and the choice of CAD-CAM system.
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Affiliation(s)
- Maria Bousnaki
- Doctoral student, Department of Prosthodontics, School of Dentistry, Aristotle University of Thessaloniki, Thessaloniki, Greece.
| | - Maria Chatziparaskeva
- Postgraduate student, Department of Prosthodontics, School of Dentistry, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Athina Bakopoulou
- Assistant Professor, Department of Prosthodontics, School of Dentistry, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Argiris Pissiotis
- Professor, Department of Prosthodontics, School of Dentistry, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Petros Koidis
- Professor and Chairman, Department of Prosthodontics, School of Dentistry, Aristotle University of Thessaloniki, Thessaloniki, Greece
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Bousnaki M, Bakopoulou A, Papadogianni D, Barkoula NM, Alpantaki K, Kritis A, Chatzinikolaidou M, Koidis P. Fibro/chondrogenic differentiation of dental stem cells into chitosan/alginate scaffolds towards temporomandibular joint disc regeneration. J Mater Sci Mater Med 2018; 29:97. [PMID: 29946796 DOI: 10.1007/s10856-018-6109-6] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2017] [Accepted: 06/15/2018] [Indexed: 06/08/2023]
Abstract
Tissue engineering (TE) may provide effective alternative treatment for challenging temporomandibular joint (TMJ) pathologies associated with disc malpositioning or degeneration and leading to severe masticatory dysfunction. Aim of this study was to evaluate the potential of chitosan/alginate (Ch/Alg) scaffolds to promote fibro/chondrogenic differentiation of dental pulp stem cells (DPSCs) and production of fibrocartilage tissue, serving as a replacement of the natural TMJ disc. Ch/Alg scaffolds were fabricated by crosslinking with CaCl2 combined or not with glutaraldehyde, resulting in two scaffold types that were physicochemically characterized, seeded with DPSCs or human nucleus pulposus cells (hNPCs) used as control and evaluated for cell attachment, viability, and proliferation. The DPSCs/scaffold constructs were incubated for up to 8 weeks and assessed for extracellular matrix production by means of histology, immunofluorescence, and thermomechanical analysis. Both Ch/Alg scaffold types with a mass ratio of 1:1 presented a gel-like structure with interconnected pores. Scaffolds supported cell adhesion and long-term viability/proliferation of DPSCs and hNPCs. DPSCs cultured into Ch/Alg scaffolds demonstrated a significant increase of gene expression of fibrocartilaginous markers (COLI, COL X, SOX9, COM, ACAN) after up to 3 weeks in culture. Dynamic thermomechanical analysis revealed that scaffolds loaded with DPSCs significantly increased storage modulus and elastic response compared to cell-free scaffolds, obtaining values similar to those of native TMJ disc. Histological data and immunochemical staining for aggrecan after 4 to 8 weeks indicated that the scaffolds support abundant fibrocartilaginous tissue formation, thus providing a promising strategy for TMJ disc TE-based replacement.
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Affiliation(s)
- Maria Bousnaki
- Department of Prosthodontics, Faculty of Dentistry, Aristotle University of Thessaloniki, University Campus, Dentistry Building, 54124, Thessaloniki, Greece
| | - Athina Bakopoulou
- Department of Prosthodontics, Faculty of Dentistry, Aristotle University of Thessaloniki, University Campus, Dentistry Building, 54124, Thessaloniki, Greece
| | - Danai Papadogianni
- Department of Materials Science and Technology, University of Crete, Voutes Campus, Heraklion, 71003, Crete, Greece
| | - Nektaria-Marianthi Barkoula
- Department of Materials Science and Engineering, University of Ioannina, University Campus, 45500, Ioannina, Greece
| | - Kalliopi Alpantaki
- Department of Materials Science and Technology, University of Crete, Voutes Campus, Heraklion, 71003, Crete, Greece
| | - Aristidis Kritis
- Department of Physiology and Pharmacology, Faculty of Medicine, Aristotle University of Thessaloniki, University Campus, 54006, Thessaloniki, Greece
- cGMP Regenerative Medicine facility, Department of Physiology and Pharmacology, Faculty of Medicine, Aristotle University of Thessaloniki, Thessaloniki, 54006, Greece
| | - Maria Chatzinikolaidou
- Department of Materials Science and Technology, University of Crete, Voutes Campus, Heraklion, 71003, Crete, Greece
- Institute of Electronic Structure and Laser, Foundation for Research and Technology-Hellas, Nikolaou Plastira 100, Vassilika Vouton, Heraklion, 70013, Crete, Greece
| | - Petros Koidis
- Department of Prosthodontics, Faculty of Dentistry, Aristotle University of Thessaloniki, University Campus, Dentistry Building, 54124, Thessaloniki, Greece.
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Bousnaki M, Bakopoulou A, Koidis P. Platelet-rich plasma for the therapeutic management of temporomandibular joint disorders: a systematic review. Int J Oral Maxillofac Surg 2017; 47:188-198. [PMID: 29066000 DOI: 10.1016/j.ijom.2017.09.014] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2017] [Revised: 08/08/2017] [Accepted: 09/25/2017] [Indexed: 11/30/2022]
Abstract
This systematic review aimed to investigate whether intra-articular injections of platelet-rich plasma (PRP) are beneficial for the treatment of degenerative temporomandibular disorders, such as temporomandibular joint osteoarthritis (TMJ-OA) and disc displacement with osteoarthritic lesions, when compared to other treatments, such as injections of hyaluronic acid (HA) or saline. An electronic search of the MEDLINE and Scopus databases was performed using combinations of the terms "temporomandibular" and "platelet rich plasma", to identify studies reported in English and published up until May 2017. A hand-search of relevant journals and the reference lists of selected articles was also performed. The initial screening identified 153 records, of which only six fulfilled the inclusion criteria and were included in this review. Of these studies, three compared PRP with HA, while three compared PRP with Ringer's lactate or saline. Four of the studies found PRP injections to be superior in terms of improvements in mandibular range of motion and pain intensity up to 12 months after treatment, while the remaining two studies found similar results for the different treatments. There is slight evidence for the potential benefits of intra-articular injections of PRP in patients with TMJ-OA. However, a standardized protocol for PRP preparation and application needs to be established.
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Affiliation(s)
- M Bousnaki
- Department of Prosthodontics, Faculty of Dentistry, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - A Bakopoulou
- Department of Prosthodontics, School of Dentistry, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - P Koidis
- Department of Prosthodontics, Faculty of Dentistry, Aristotle University of Thessaloniki, Thessaloniki, Greece.
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Theocharidou A, Bakopoulou A, Kontonasaki E, Papachristou E, Hadjichristou C, Bousnaki M, Theodorou G, Papadopoulou L, Kantiranis N, Paraskevopoulos K, Koidis P. Odontogenic differentiation and biomineralization potential of dental pulp stem cells inside Mg-based bioceramic scaffolds under low-level laser treatment. Lasers Med Sci 2016; 32:201-210. [DOI: 10.1007/s10103-016-2102-9] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2016] [Accepted: 10/19/2016] [Indexed: 01/19/2023]
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Theodorou GS, Kontonasaki E, Theocharidou A, Bakopoulou A, Bousnaki M, Hadjichristou C, Papachristou E, Papadopoulou L, Kantiranis NA, Chrissafis K, Paraskevopoulos KM, Koidis PT. Sol-Gel Derived Mg-Based Ceramic Scaffolds Doped with Zinc or Copper Ions: Preliminary Results on Their Synthesis, Characterization, and Biocompatibility. Int J Biomater 2016; 2016:3858301. [PMID: 26981124 PMCID: PMC4769780 DOI: 10.1155/2016/3858301] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2015] [Accepted: 01/11/2016] [Indexed: 12/22/2022] Open
Abstract
Glass-ceramic scaffolds containing Mg have shown recently the potential to enhance the proliferation, differentiation, and biomineralization of stem cells in vitro, property that makes them promising candidates for dental tissue regeneration. An additional property of a scaffold aimed at dental tissue regeneration is to protect the regeneration process against oral bacteria penetration. In this respect, novel bioactive scaffolds containing Mg(2+) and Cu(2+) or Zn(2+), ions known for their antimicrobial properties, were synthesized by the foam replica technique and tested regarding their bioactive response in SBF, mechanical properties, degradation, and porosity. Finally their ability to support the attachment and long-term proliferation of Dental Pulp Stem Cells (DPSCs) was also evaluated. The results showed that conversely to their bioactive response in SBF solution, Zn-doped scaffolds proved to respond adequately regarding their mechanical strength and to be efficient regarding their biological response, in comparison to Cu-doped scaffolds, which makes them promising candidates for targeted dental stem cell odontogenic differentiation and calcified dental tissue engineering.
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Affiliation(s)
- Georgios S. Theodorou
- Department of Physics, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Eleana Kontonasaki
- Dentistry Department, Laboratory of Fixed Prosthesis and Implant Prosthodontics, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Anna Theocharidou
- Dentistry Department, Laboratory of Fixed Prosthesis and Implant Prosthodontics, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Athina Bakopoulou
- Dentistry Department, Laboratory of Fixed Prosthesis and Implant Prosthodontics, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Maria Bousnaki
- Dentistry Department, Laboratory of Fixed Prosthesis and Implant Prosthodontics, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Christina Hadjichristou
- Dentistry Department, Laboratory of Fixed Prosthesis and Implant Prosthodontics, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Eleni Papachristou
- Dentistry Department, Laboratory of Fixed Prosthesis and Implant Prosthodontics, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Lambrini Papadopoulou
- Department of Geology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | | | | | | | - Petros T. Koidis
- Dentistry Department, Laboratory of Fixed Prosthesis and Implant Prosthodontics, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
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Samara C, Kouras A, Kaidoglou K, Emmanouil-Nikoloussi EN, Simou C, Bousnaki M, Kelessis A. Ultrastructural alterations in the mouse lung caused by real-life ambient PM10 at urban traffic sites. Sci Total Environ 2015; 532:327-336. [PMID: 26081735 DOI: 10.1016/j.scitotenv.2015.05.139] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2015] [Revised: 05/19/2015] [Accepted: 05/31/2015] [Indexed: 06/04/2023]
Abstract
Current levels of ambient air particulate matter (PM) are associated with mortality and morbidity in urban populations worldwide. Nevertheless, current knowledge does not allow precise quantification or definitive ranking of the health effects of individual PM components and indeed, associations may be the result of multiple components acting on different physiological mechanisms. In this paper, healthy Balb/c mice were exposed to ambient PM10 at a traffic site of a large city (Thessaloniki, northern Greece), in parallel to control mice that were exposed to filtered air. Structural damages were examined in ultrafine sections of lung tissues by Transmission Electronic Microscopy (TEM). Ambient PM10 samples were also collected during the exposure experiment and characterized with respect to chemical composition and oxidative potential. Severe ultrastructural alterations in the lung tissue after a 10-week exposure of mice at PM10 levels often exceeding the daily limit of Directive 2008/50/EC were revealed mainly implying PM-induced oxidative stress. The DTT-based redox activity of PM10 was found within the range of values reported for traffic sites being correlated with traffic-related constituents. Although linkage of the observed lung damage with specific chemical components or sources need further elucidation, the magnitude of biological responses highlight the necessity for national and local strategies for mitigation of particle emissions from combustion sources.
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Affiliation(s)
- Constantini Samara
- Environmental Pollution Control Laboratory, Department of Chemistry, Aristotle University of Thessaloniki, 541 24 Thesaloniki, Greece.
| | - Athanasios Kouras
- Environmental Pollution Control Laboratory, Department of Chemistry, Aristotle University of Thessaloniki, 541 24 Thesaloniki, Greece
| | - Katerina Kaidoglou
- Environmental Pollution Control Laboratory, Department of Chemistry, Aristotle University of Thessaloniki, 541 24 Thesaloniki, Greece
| | - Elpida-Niki Emmanouil-Nikoloussi
- Laboratory of Histology-Embryology and Anthropology, School of Medicine, Aristotle University of Thessaloniki, 541 24 Thesaloniki, Greece
| | - Chrysanthi Simou
- Laboratory of Histology-Embryology and Anthropology, School of Medicine, Aristotle University of Thessaloniki, 541 24 Thesaloniki, Greece
| | - Maria Bousnaki
- Laboratory of Histology-Embryology and Anthropology, School of Medicine, Aristotle University of Thessaloniki, 541 24 Thesaloniki, Greece
| | - Apostolos Kelessis
- Environmental Department, Municipality of Thessaloniki, Kleanthous 18, 54 642 Thessaloniki, Greece
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Bousnaki M, Simou C, Kaidoglou K, Kouras A, Samara C, Kelessis A, Emmanouil-Nikoloussi EN. Effects of airborne pollutants on the neonatal mice lung, after exposure at a heavy traffic site in northern Greece. Reprod Toxicol 2015. [DOI: 10.1016/j.reprotox.2015.07.055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Kontonasaki E, Bakopoulou A, Theocharidou A, Theodorou GS, Papadopoulou L, Kantiranis N, Bousnaki M, Chatzichristou C, Papachristou E, Paraskevopoulos K, Koidis P. Effective Cell Growth Potential of Mg-Based Bioceramic Scaffolds towards Targeted Dentin Regeneration. Balkan Journal of Dental Medicine 2015. [DOI: 10.1515/bjdm-2015-0039] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
SUMMARY
New emerging approaches in tissue engineering include incorporation of metal ions involved in various metabolic processes, such as Cu, Zn, Si into bioceramic scaffolds for enhanced cell growth and differentiation of specific cell types. The aim of the present work was to investigate the attachment, morphology, growth and mineralized tissue formation potential of Dental Pulp Stem Cells (DPSCs) seeded into Mg-based glassceramic scaffolds with incorporated Zn and Cu ions. Bioceramic scaffolds containing Si 60%, Ca 30%, Mg 7.5% and either Zn or Cu 2.5%, sintered at different temperatures were synthesized by the foam replica technique and seeded with DPSCs for up to 21 days. Scanning Electron Microscopy with associated Energy Dispersive Spectroscopy (SEM-EDS) was used to evaluate their ability to support the DPSCs’s attachment and proliferation, while the structure of the seeded scaffolds was investigated by X-Ray Diffraction Analysis (XRD). Zn-doped bioceramic scaffolds promoted the attachment and growth of human DPSCs, while identically fabricated scaffolds doped with Cu showed a cytotoxic behaviour, irrespective of the sintering temperature. A mineralized tissue with apatite-like structure was formed on both Cu-doped scaffolds and only on those Zn-doped scaffolds heat-treated at lower temperatures. Sol-gel derived Zn-doped scaffolds sintered at 890oC support DPSC growth and apatite-like tissue formation, which renders them as promising candidates towards dental tissue regeneration.
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Affiliation(s)
- E. Kontonasaki
- School of Dentistry, Department of Fixed Prosthesis and Implant Prosthodontics, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - A. Bakopoulou
- School of Dentistry, Department of Fixed Prosthesis and Implant Prosthodontics, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - A. Theocharidou
- School of Dentistry, Department of Fixed Prosthesis and Implant Prosthodontics, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - G. S. Theodorou
- Faculty of Sciences, Department of Physics, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - L. Papadopoulou
- Faculty of Sciences, Department of Geology, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - N. Kantiranis
- Faculty of Sciences, Department of Physics, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - M. Bousnaki
- School of Dentistry, Department of Fixed Prosthesis and Implant Prosthodontics, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - C. Chatzichristou
- School of Dentistry, Department of Fixed Prosthesis and Implant Prosthodontics, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - E. Papachristou
- School of Dentistry, Department of Fixed Prosthesis and Implant Prosthodontics, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - K.M. Paraskevopoulos
- Faculty of Sciences, Department of Physics, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - P. Koidis
- School of Dentistry, Department of Fixed Prosthesis and Implant Prosthodontics, Aristotle University of Thessaloniki, Thessaloniki, Greece
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Bousnaki M, Makaronidis I, Sioga A, Simou C, Nikolousis E, Konstantinidou E, Kaidoglou K, Papamitsou T, Emmanouil-Nikoloussi EN. Ultrastructural observations of brain neurotoxicity in neonatal mice after “in vivo” individual exposure to arsenic and lead during gestation. Reprod Toxicol 2013. [DOI: 10.1016/j.reprotox.2013.06.053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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