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Kérourédan O, Washio A, Handschin C, Devillard R, Kokabu S, Kitamura C, Tabata Y. Bioactive gelatin-sheets as novel biopapers to support prevascularization organized by laser-assisted bioprinting for bone tissue engineering. Biomed Mater 2024; 19:025038. [PMID: 38324892 DOI: 10.1088/1748-605x/ad270a] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Accepted: 02/07/2024] [Indexed: 02/09/2024]
Abstract
Despite significant advances in the management of patients with oral cancer, maxillofacial reconstruction after ablative surgery remains a clinical challenge. In bone tissue engineering, biofabrication strategies have been proposed as promising alternatives to solve issues associated with current therapies and to produce bone substitutes that mimic both the structure and function of native bone. Among them, laser-assisted bioprinting (LAB) has emerged as a relevant biofabrication method to print living cells and biomaterials with micrometric resolution onto a receiving substrate, also called 'biopaper'. Recent studies have demonstrated the benefits of prevascularization using LAB to promote vascularization and bone regeneration, but mechanical and biological optimization of the biopaper are needed. The aim of this study was to apply gelatin-sheet fabrication process to the development of a novel biopaper able to support prevascularization organized by LAB for bone tissue engineering applications. Gelatin-based sheets incorporating bioactive glasses (BGs) were produced using various freezing methods and crosslinking (CL) parameters. The different formulations were characterized in terms of microstructural, physical, mechanical, and biological properties in monoculture and coculture. Based on multi-criteria analysis, a rank scoring method was used to identify the most relevant formulations. The selected biopaper underwent additional characterization regarding its ability to support mineralization and vasculogenesis, its bioactivity potential andin vivodegradability. The biopaper 'Gel5wt% BG1wt%-slow freezing-CL160 °C 24 h' was selected as the best candidate, due to its suitable properties including high porosity (91.69 ± 1.55%), swelling ratio (91.61 ± 0.60%), Young modulus (3.97 × 104± 0.97 × 104Pa) but also its great cytocompatibility, osteogenesis and bioactivity properties. The preorganization of human umbilical vein endothelial cell using LAB onto this new biopaper led to the formation of microvascular networks. This biopaper was also shown to be compatible with 3D-molding and 3D-stacking strategies. This work allowed the development of a novel biopaper adapted to LAB with great potential for vascularized bone biofabrication.
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Affiliation(s)
- Olivia Kérourédan
- INSERM, U1026 BIOTIS, University of Bordeaux, 146 rue Léo Saignat, Bordeaux 33076, France
- Faculty of Dentistry, University of Bordeaux, 146 rue Léo Saignat, Bordeaux 33076, France
- CHU de Bordeaux, Pôle de Médecine et Chirurgie bucco-dentaire, Place Amélie Raba Léon, Bordeaux 33076, France
- CHU de Bordeaux, CCMR MOC-Maladies Osseuses Constitutionnelles, Place Amélie Raba Léon, Bordeaux 33076, France
- CHU de Bordeaux, CCMR O-Rares-Maladies Rares Orales et Dentaires, Place Amélie Raba Léon, Bordeaux 33076, France
- Laboratory of Biomaterials, Department of Regeneration Science and Engineering, Institute for Life and Medical Sciences, Kyoto University, Kyoto, Japan
| | - Ayako Washio
- Division of Endodontics and Restorative Dentistry, Department of Science of Oral Functions, Kyushu Dental University, 2-6-1 Manazuru, Kokurakita-ku, Kitakyushu 803-8580, Japan
| | - Charles Handschin
- ART BioPrint, INSERM, U1026 BIOTIS, University of Bordeaux, 146 rue Léo Saignat, Bordeaux 33076, France
| | - Raphaël Devillard
- INSERM, U1026 BIOTIS, University of Bordeaux, 146 rue Léo Saignat, Bordeaux 33076, France
- Faculty of Dentistry, University of Bordeaux, 146 rue Léo Saignat, Bordeaux 33076, France
- CHU de Bordeaux, Pôle de Médecine et Chirurgie bucco-dentaire, Place Amélie Raba Léon, Bordeaux 33076, France
- CHU de Bordeaux, CCMR MOC-Maladies Osseuses Constitutionnelles, Place Amélie Raba Léon, Bordeaux 33076, France
- CHU de Bordeaux, CCMR O-Rares-Maladies Rares Orales et Dentaires, Place Amélie Raba Léon, Bordeaux 33076, France
| | - Shoichiro Kokabu
- Division of Molecular Signaling and Biochemistry, Department of Health Improvement, Kyushu Dental University, 2-6-1 Manazuru, Kokurakita-ku, Kitakyushu 803-8580, Japan
| | - Chiaki Kitamura
- Division of Endodontics and Restorative Dentistry, Department of Science of Oral Functions, Kyushu Dental University, 2-6-1 Manazuru, Kokurakita-ku, Kitakyushu 803-8580, Japan
| | - Yasuhiko Tabata
- Laboratory of Biomaterials, Department of Regeneration Science and Engineering, Institute for Life and Medical Sciences, Kyoto University, Kyoto, Japan
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Washio A, Kérourédan O, Tabata Y, Kokabu S, Kitamura C. Effect of Bioactive Glasses and Basic Fibroblast Growth Factor on Dental Pulp Cells. J Funct Biomater 2023; 14:568. [PMID: 38132822 PMCID: PMC10744375 DOI: 10.3390/jfb14120568] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Revised: 12/15/2023] [Accepted: 12/15/2023] [Indexed: 12/23/2023] Open
Abstract
Ideal regeneration of hard tissue and dental pulp has been reported with the use of a combination of bioactive glass and basic fibroblast growth factor (bFGF). However, no previous study has investigated the molecular mechanisms underlying the processes induced by this combination in dental pulp cells. This study aimed to examine the cellular phenotype and transcriptional changes induced by the combination of bioactive glass solution (BG) and bFGF in dental pulp cells using phase-contrast microscopy, a cell counting kit-8 assay, alkaline phosphatase staining, and RNA sequence analysis. bFGF induced elongation of the cell process and increased the number of cells. Whereas BG did not increase ALP activity, it induced extracellular matrix-related genes in the dental pulp. In addition, the combination of BG and bFGF induces gliogenesis-related genes in the nervous system. This is to say, bFGF increased the viability of dental pulp cells, bioactive glass induced odontogenesis, and a dual stimulation with bioactive glass and bFGF induced the wound healing of the nerve system in the dental pulp. Taken together, bioactive glass and bFGF may be useful for the regeneration of the dentin-pulp complex.
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Affiliation(s)
- Ayako Washio
- Division of Endodontics and Restorative Dentistry, Department of Oral Functions, Kyushu Dental University, 2-6-1 Manazuru, Kokurakita-ku, Kitakyushu 803-8580, Japan;
| | - Olivia Kérourédan
- National Institute of Health and Medical Research (INSERM), U1026 BIOTIS, University of Bordeaux, 146 Rue Léo Saignat, 33076 Bordeaux, France;
| | - Yasuhiko Tabata
- Laboratory of Biomaterials, Department of Regeneration Science and Engineering, Institute for Frontier Life and Medical Sciences, Kyoto University, 53 Kawara-cho Shogoin, Sakyo-ku, Kyoto 606-8507, Japan;
| | - Shoichiro Kokabu
- Division of Molecular Signaling and Biochemistry, Kyushu Dental University, 2-6-1 Manazuru, Kokurakita-ku, Kitakyushu 803-8580, Japan;
| | - Chiaki Kitamura
- Division of Endodontics and Restorative Dentistry, Department of Oral Functions, Kyushu Dental University, 2-6-1 Manazuru, Kokurakita-ku, Kitakyushu 803-8580, Japan;
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Kawata K, Narita K, Washio A, Kitamura C, Nishihara T, Kubota S, Takeda S. Odontoblast differentiation is regulated by an interplay between primary cilia and the canonical Wnt pathway. Bone 2021; 150:116001. [PMID: 33975031 DOI: 10.1016/j.bone.2021.116001] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Revised: 04/27/2021] [Accepted: 05/02/2021] [Indexed: 01/29/2023]
Abstract
Primary cilium is a protruding cellular organelle that has various physiological functions, especially in sensory reception. While an avalanche of reports on primary cilia have been published, the function of primary cilia in dental cells remains to be investigated. In this study, we focused on the function of primary cilia in dentin-producing odontoblasts. Odontoblasts, like most other cell types, possess primary cilia, which disappear upon the knockdown of intraflagellar transport protein 88. In cilia-depleted cells, the expression of dentin sialoprotein, an odontoblastic marker, was elevated, while the deposition of minerals was slowed. This was recapitulated by the activation of canonical Wnt pathway, also decreased the ratio of ciliated cells. In dental pulp cells, as they differentiated into odontoblasts, the ratio of ciliated cells was increased, whereas the canonical Wnt signaling activity was repressed. Our results collectively underscore the roles of primary cilia in regulating odontoblastic differentiation through canonical Wnt signaling. This study implies the existence of a feedback loop between primary cilia and the canonical Wnt pathway.
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Affiliation(s)
- Kazumi Kawata
- Department of Anatomy and Cell Biology, University of Yamanashi Faculty of Medicine, 1110, Shimo-Kateau, Chuo, Yamanashi 4093898, Japan; Department of Biochemistry and Molecular Dentistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Kita-ku, Okayama 7008525, Japan.
| | - Keishi Narita
- Department of Anatomy and Cell Biology, University of Yamanashi Faculty of Medicine, 1110, Shimo-Kateau, Chuo, Yamanashi 4093898, Japan
| | - Ayako Washio
- Division of Endodontics and Restorative Dentistry, Department of Oral Functions, Kyushu Dental University, 2-6-1 Manazuru, Kokura-kita, Kitakyushu, Fukuoka 8038580, Japan
| | - Chiaki Kitamura
- Division of Endodontics and Restorative Dentistry, Department of Oral Functions, Kyushu Dental University, 2-6-1 Manazuru, Kokura-kita, Kitakyushu, Fukuoka 8038580, Japan
| | - Tatsuji Nishihara
- Division of Infections and Molecular Biology, Department of Health Promotion, Kyushu Dental University, 2-6-1 Manazuru, Kokura-kita, Kitakyushu, Fukuoka 8038580, Japan
| | - Satoshi Kubota
- Department of Biochemistry and Molecular Dentistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Kita-ku, Okayama 7008525, Japan
| | - Sen Takeda
- Department of Anatomy and Cell Biology, University of Yamanashi Faculty of Medicine, 1110, Shimo-Kateau, Chuo, Yamanashi 4093898, Japan.
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Murata K, Washio A, Morotomi T, Rojasawasthien T, Kokabu S, Kitamura C. Physicochemical Properties, Cytocompatibility, and Biocompatibility of a Bioactive Glass Based Retrograde Filling Material. Nanomaterials (Basel) 2021; 11:nano11071828. [PMID: 34361212 PMCID: PMC8308453 DOI: 10.3390/nano11071828] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 07/07/2021] [Accepted: 07/12/2021] [Indexed: 01/09/2023]
Abstract
The ideal retrograde filling material that is easy to handle, has good physicochemical properties, and is biocompatible has not yet been developed. The current study reports the development of a novel bioactive glass based powder for use as a retrograde filling material that is capable of altering the consistency and hardening rate of mixtures when mixed with existing bioactive glass based cement. Furthermore, its physicochemical properties, in vitro effects on human cementoblast-like cells, and in vivo effects on inflammatory responses were evaluated. The surface of the hardened cement showed the formation of hydroxyapatite-like precipitates and calcium and silicate ions were eluted from the cement when the pH level was stabilized at 10.5. Additionally, the cement was found to be insoluble and exhibited favorable handling properties. No adverse effects on viability, proliferation, and expression of differentiated markers were observed in the in vitro experiment, and the cement was capable of inducing calcium deposition in the cells. Moreover, the cement demonstrated a lower number of infiltrated inflammatory cells compared to the other materials used in the in vivo mouse subcutaneous implantation experiment. These findings suggest that the retrograde filling material composed of bioactive glass and the novel bioactive glass based powder exhibits favorable physicochemical properties, cytocompatibility, and biocompatibility.
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Affiliation(s)
- Kazumasa Murata
- Division of Endodontics and Restorative Dentistry, Department of Oral Functions, Kyushu Dental University, Kitakyushu 803-8580, Japan; (K.M.); (T.M.); (C.K.)
| | - Ayako Washio
- Division of Endodontics and Restorative Dentistry, Department of Oral Functions, Kyushu Dental University, Kitakyushu 803-8580, Japan; (K.M.); (T.M.); (C.K.)
- Correspondence: ; Tel.: +81-93-582-1131
| | - Takahiko Morotomi
- Division of Endodontics and Restorative Dentistry, Department of Oral Functions, Kyushu Dental University, Kitakyushu 803-8580, Japan; (K.M.); (T.M.); (C.K.)
| | - Thira Rojasawasthien
- Division of Molecular Signaling and Biochemistry, Department of Health Improvement, Kyushu Dental University, Kitakyushu 803-8580, Japan; (T.R.); (S.K.)
| | - Shoichiro Kokabu
- Division of Molecular Signaling and Biochemistry, Department of Health Improvement, Kyushu Dental University, Kitakyushu 803-8580, Japan; (T.R.); (S.K.)
| | - Chiaki Kitamura
- Division of Endodontics and Restorative Dentistry, Department of Oral Functions, Kyushu Dental University, Kitakyushu 803-8580, Japan; (K.M.); (T.M.); (C.K.)
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Rojasawasthien T, Shirakawa T, Washio A, Tsujisawa T, Matsubara T, Inoue A, Takahama U, Nakashima K, Kokabu S. Vignacyanidin Polyphenols Isolated from Vigna Angularis Bean Promote Osteoblast Differentiation. In Vivo 2021; 35:883-888. [PMID: 33622880 DOI: 10.21873/invivo.12328] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 12/01/2020] [Revised: 12/11/2020] [Accepted: 12/15/2020] [Indexed: 12/22/2022]
Abstract
BACKGROUND/AIM An effective bone regenerative method needs to be established for the dental field. To identify a novel osteogenic factor for bone regeneration, we examined the effect of vignacyanidin (VIG) on osteoblastogenesis. MATERIALS AND METHODS W20-17 cells, MC3T3-E1 cells, and primary cultured murine calvarial osteoblasts were used. Osteoblast differentiation was stimulated by β-glycerophosphate, ascorbic acid, or bone morphogenetic protein (BMP)-4. Adipogenesis was induced using dexamethasone, 3-isobutyl-1-methylxanthine, insulin, and rosiglitazone. Differentiation or proliferation markers were determined using western blotting and/or the quantitative reverse transcription polymerase chain reaction. Adipogenic cells were visualized by Oil Red O staining. RESULTS VIG treatment increased the expression of osteoblastic markers and alkaline phosphatase activity of osteoblast-lineage cells in a concentration-dependent manner. However, adipogenesis and cell proliferation were not affected by VIG. CONCLUSION VIG treatment promoted osteoblast differentiation in osteoblast-lineage cells.
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Affiliation(s)
- Thira Rojasawasthien
- Division of Molecular Signaling and Biochemistry, Department of Health Improvement, Kyushu Dental University, Kitakyushu, Japan.,Division of Periodontology, Department of Oral Function, Kyushu Dental University, Kitakyushu, Japan
| | - Tomohiko Shirakawa
- Division of Molecular Signaling and Biochemistry, Department of Health Improvement, Kyushu Dental University, Kitakyushu, Japan
| | - Ayako Washio
- Division of Endodontics and Restorative Dentistry, Department of Oral Functions, Kyushu Dental University, Kitakyushu, Japan
| | | | - Takuma Matsubara
- Division of Molecular Signaling and Biochemistry, Department of Health Improvement, Kyushu Dental University, Kitakyushu, Japan
| | - Asako Inoue
- Division of Molecular Signaling and Biochemistry, Department of Health Improvement, Kyushu Dental University, Kitakyushu, Japan
| | - Umeo Takahama
- Division of Community Oral Health Development, Kyushu Dental University, Kitakyushu, Japan
| | - Keisuke Nakashima
- Division of Periodontology, Department of Oral Function, Kyushu Dental University, Kitakyushu, Japan
| | - Shoichiro Kokabu
- Division of Molecular Signaling and Biochemistry, Department of Health Improvement, Kyushu Dental University, Kitakyushu, Japan;
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Miura H, Yoshii S, Fujimoto M, Washio A, Morotomi T, Ikeda H, Kitamura C. Effects of Both Fiber Post/Core Resin Construction System and Root Canal Sealer on the Material Interface in Deep Areas of Root Canal. Materials (Basel) 2021; 14:ma14040982. [PMID: 33669868 PMCID: PMC7923224 DOI: 10.3390/ma14040982] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Revised: 02/15/2021] [Accepted: 02/16/2021] [Indexed: 11/29/2022]
Abstract
This study aimed to examine the resin polymerization of a fiber post/core resin construction system and the interface between resin and root canal sealers, which are important for root canal sealing. We used the i-TFC Luminus fiber post and i-TFC Luminus LC flow (i-TFC-L), the GC fiber post and Unifil Core EM (GCF), and the FiberKor post and Build-It FR (FKP) as core construction systems, and Nishika Canal Sealer BG (CS-BG), Metaseal Soft (META), and Nishika Canal Sealer EN (CS-EN) as sealers. The light transmission of fiber posts (n = 5), the polymerization of core resin (n = 5), and the adhesion between the sealer and core resin (n = 10) were evaluated. The i-TFC Luminus fiber post light transmission was significantly higher than that of other posts. Without shielding, i-TFC-L showed a significantly greater amount of polymerized resin than the other systems. With shielding, although i-TFC-L showed a significantly greater amount of polymerized resin immediately after light irradiation, polymerized resin was significantly greater in GCF and FKP after 10 min. All systems adhered to CS-BG and META but not to CS-EN. These results indicate that resin polymerization in the cavity differs among fiber post/core resin construction systems and that the adhesion of the resin and sealer depends on the property of the sealer.
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Affiliation(s)
- Hiroki Miura
- Division of Endodontics and Restorative Dentistry, Department of Oral Functions, Kyushu Dental University, 2-6-1 Manazuru, Kokurakita-ku, Kitakyushu, Fukuoka 803-8580, Japan; (H.M.); (S.Y.); (M.F.); (A.W.); (T.M.)
| | - Shinji Yoshii
- Division of Endodontics and Restorative Dentistry, Department of Oral Functions, Kyushu Dental University, 2-6-1 Manazuru, Kokurakita-ku, Kitakyushu, Fukuoka 803-8580, Japan; (H.M.); (S.Y.); (M.F.); (A.W.); (T.M.)
| | - Masataka Fujimoto
- Division of Endodontics and Restorative Dentistry, Department of Oral Functions, Kyushu Dental University, 2-6-1 Manazuru, Kokurakita-ku, Kitakyushu, Fukuoka 803-8580, Japan; (H.M.); (S.Y.); (M.F.); (A.W.); (T.M.)
| | - Ayako Washio
- Division of Endodontics and Restorative Dentistry, Department of Oral Functions, Kyushu Dental University, 2-6-1 Manazuru, Kokurakita-ku, Kitakyushu, Fukuoka 803-8580, Japan; (H.M.); (S.Y.); (M.F.); (A.W.); (T.M.)
| | - Takahiko Morotomi
- Division of Endodontics and Restorative Dentistry, Department of Oral Functions, Kyushu Dental University, 2-6-1 Manazuru, Kokurakita-ku, Kitakyushu, Fukuoka 803-8580, Japan; (H.M.); (S.Y.); (M.F.); (A.W.); (T.M.)
| | - Hiroshi Ikeda
- Division of Biomaterials, Department of Oral Functions, Kyushu Dental University, 2-6-1 Manazuru, Kokurakita-ku, Kitakyushu, Fukuoka 803-8580, Japan;
| | - Chiaki Kitamura
- Division of Endodontics and Restorative Dentistry, Department of Oral Functions, Kyushu Dental University, 2-6-1 Manazuru, Kokurakita-ku, Kitakyushu, Fukuoka 803-8580, Japan; (H.M.); (S.Y.); (M.F.); (A.W.); (T.M.)
- Correspondence: ; Tel.: +81-93-582-1131
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Shirakawa T, Miyawaki A, Matsubara T, Okumura N, Okamoto H, Nakai N, Rojasawasthien T, Morikawa K, Inoue A, Goto A, Washio A, Tsujisawa T, Kawamoto T, Kokabu S. Daily Oral Administration of Protease-Treated Royal Jelly Protects Against Denervation-Induced Skeletal Muscle Atrophy. Nutrients 2020; 12:E3089. [PMID: 33050588 PMCID: PMC7600733 DOI: 10.3390/nu12103089] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [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: 09/06/2020] [Revised: 10/07/2020] [Accepted: 10/07/2020] [Indexed: 12/13/2022] Open
Abstract
Honeybees produce royal jelly (RJ) from their cephalic glands. Royal jelly is a source of nutrition for the queen honey bee throughout its lifespan and is also involved in fertility and longevity. Royal jelly has long been considered beneficial to human health. We recently observed that RJ delayed impairment of motor function during aging, affecting muscle fiber size. However, how RJ affects skeletal muscle metabolism and the functional component of RJ is as of yet unidentified. We demonstrate that feeding mice with RJ daily prevents a decrease in myofiber size following denervation without affecting total muscle weight. RJ did not affect atrophy-related genes but stimulated the expression of myogenesis-related genes, including IGF-1 and IGF receptor. Trans-10-hydroxy-2-decenoic acid (10H2DA) and 10-hydroxydecanoic acid (10HDAA), two major fatty acids contained in RJ. After ingestion, 10H2DA and 10HDAA are metabolized into 2-decenedioic acid (2DA) and sebacic acid (SA) respectively. We found that 10H2DA, 10HDAA, 2DA, and SA all regulated myogenesis of C2C12 cells, murine myoblast cells. These novel findings may be useful for potential preventative and therapeutic applications for muscle atrophy disease included in Sarcopenia, an age-related decline in skeletal muscle mass and strength.
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Affiliation(s)
- Tomohiko Shirakawa
- Division of Molecular Signaling and Biochemistry, Department of Health Improvement, Kyushu Dental University, Kitakyushu, Fukuoka 803-8580, Japan; (T.S.); (A.M.); (T.M.); (N.N.); (T.R.); (A.I.); (A.G.)
- Division of Orofacial Functions and Orthodontics, Department of Health Improvement, Kyushu Dental University, Kitakyushu, Fukuoka 803-8580, Japan;
| | - Aki Miyawaki
- Division of Molecular Signaling and Biochemistry, Department of Health Improvement, Kyushu Dental University, Kitakyushu, Fukuoka 803-8580, Japan; (T.S.); (A.M.); (T.M.); (N.N.); (T.R.); (A.I.); (A.G.)
| | - Takuma Matsubara
- Division of Molecular Signaling and Biochemistry, Department of Health Improvement, Kyushu Dental University, Kitakyushu, Fukuoka 803-8580, Japan; (T.S.); (A.M.); (T.M.); (N.N.); (T.R.); (A.I.); (A.G.)
| | - Nobuaki Okumura
- Institute for Bee Products and Health Science, Yamada Bee Company, Inc., Tomata, Okayama 708-0393, Japan; (N.O.); (H.O.)
| | - Hideto Okamoto
- Institute for Bee Products and Health Science, Yamada Bee Company, Inc., Tomata, Okayama 708-0393, Japan; (N.O.); (H.O.)
| | - Naoya Nakai
- Division of Molecular Signaling and Biochemistry, Department of Health Improvement, Kyushu Dental University, Kitakyushu, Fukuoka 803-8580, Japan; (T.S.); (A.M.); (T.M.); (N.N.); (T.R.); (A.I.); (A.G.)
| | - Thira Rojasawasthien
- Division of Molecular Signaling and Biochemistry, Department of Health Improvement, Kyushu Dental University, Kitakyushu, Fukuoka 803-8580, Japan; (T.S.); (A.M.); (T.M.); (N.N.); (T.R.); (A.I.); (A.G.)
| | - Kazumasa Morikawa
- Division of Pediatric and Special Care Dentistry, Department of Developmental Oral Health Science, School of Dentistry, Iwate Medical University, Shiwa, Iwate 028-3694, Japan;
| | - Asako Inoue
- Division of Molecular Signaling and Biochemistry, Department of Health Improvement, Kyushu Dental University, Kitakyushu, Fukuoka 803-8580, Japan; (T.S.); (A.M.); (T.M.); (N.N.); (T.R.); (A.I.); (A.G.)
| | - Akino Goto
- Division of Molecular Signaling and Biochemistry, Department of Health Improvement, Kyushu Dental University, Kitakyushu, Fukuoka 803-8580, Japan; (T.S.); (A.M.); (T.M.); (N.N.); (T.R.); (A.I.); (A.G.)
| | - Ayako Washio
- Division of Endodontics and Restorative Dentistry, Department of Oral Functions, Kyushu Dental University, Kitakyushu, Fukuoka 803-8580, Japan;
| | - Toshiyuki Tsujisawa
- School of Oral Health Sciences, Kyushu Dental University, Kitakyushu, Fukuoka 803-8580, Japan;
| | - Tatsuo Kawamoto
- Division of Orofacial Functions and Orthodontics, Department of Health Improvement, Kyushu Dental University, Kitakyushu, Fukuoka 803-8580, Japan;
| | - Shoichiro Kokabu
- Division of Molecular Signaling and Biochemistry, Department of Health Improvement, Kyushu Dental University, Kitakyushu, Fukuoka 803-8580, Japan; (T.S.); (A.M.); (T.M.); (N.N.); (T.R.); (A.I.); (A.G.)
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Inquimbert C, Hirata-Tsuchiya S, Yoshii S, Molinari N, Nogue E, Roy C, Morotomi T, Washio A, Cuisinier F, Tassery H, Levallois B, Kitamura C, Giraudeau N. Concordance study between regular face-to-face dental diagnosis and dental telediagnosis using fluorescence. J Telemed Telecare 2020; 27:509-517. [DOI: 10.1177/1357633x19894111] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [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]
Abstract
Background Teledentistry consultations are an effective way to increase access to care. Whether it be for a screening, referral or even an adapted treatment plan for a certain number of patients whose access to care is complicated, demonstrating the reliability of remote consultations is essential in allowing the technique to become generalised. Aim This study aimed to determine if teledentistry consultations using fluorescence are of the same quality as regular consultations in the diagnosis of caries. Methods Patients were seen in consultation in the dental care centre at the Montpellier University Hospital (France) and in the centre at Kyushu Dental University Hospital (Japan). The protocol was broken down into three parts: the regular consultation, the recording of videos with the Soprocare camera and the remote consultation. The regular consultation and the remote consultation were blinded and carried out by two different dentists. The recording of videos was carried out by a third dentist. The carious diagnosis was based on the International Caries Detection and Assessment System: a clinical rating system for the detection and assessment of caries. Results One hundred and ninety-five patients met the predefined inclusion criteria. Most patients had at least one surface at stage 3 or higher (73%) with a higher proportion amongst French patients (81% compared to 66%). However, they had good dental hygiene, given that dental hygiene was only deemed unsatisfactory for 10.8% (19% for French patients and 2% for Japanese patients). The odontogram (presence/absence of each tooth) seemed to be correctly identified during the remote consultation (reinterpretation). Out of the 195 patients, 168 (86.2%) were identified without error. Conclusions Teledentistry consultations can represent acceptable diagnostic performance with regard to the detection of dental caries. The Soprocare camera enables an early diagnosis of carious lesions with optimal efficiency. Several areas still need to be improved, however, so that the use of the camera during remote consultations is as coherent and effective as possible, especially with regard to the organisational aspects of remote consultations.
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Affiliation(s)
- Camille Inquimbert
- Department of Oral Public Health, Montpellier University Hospital, France
- Laboratory ‘Systemic Health Care’, University of Lyon, France
| | | | - Shinji Yoshii
- Division of Endodontics and Restorative Dentistry, Kyushu Dental University, Japan
| | - Nicolas Molinari
- Clinical Research and Epidemiology Unit, CHU Montpellier, France
- IMAG, University of Montpellier, France
| | - Erika Nogue
- Clinical Research and Epidemiology Unit, CHU Montpellier, France
| | - Clement Roy
- Department of Oral Public Health, Montpellier University Hospital, France
| | - Takahiko Morotomi
- Division of Endodontics and Restorative Dentistry, Kyushu Dental University, Japan
| | - Ayako Washio
- Division of Endodontics and Restorative Dentistry, Kyushu Dental University, Japan
| | | | | | | | - Chiaki Kitamura
- Division of Endodontics and Restorative Dentistry, Kyushu Dental University, Japan
| | - Nicolas Giraudeau
- Department of Oral Public Health, Montpellier University Hospital, France
- CEPEL, CNRS, University of Montpellier, France
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9
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Kuroda C, Kobayashi R, Kurebayashi S, Tazawa K, Masuda A, Takeuchi R, Washio A, Onuki H. Reaction of Aminomalononitrile and Benzylic Compounds as a Plausible Route to Phenylalanine. Nat Prod Commun 2020. [DOI: 10.1177/1934578x20901417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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
As a possible route to phenylalanine, reaction of aminomalononitrile with benzylic compounds was studied. 2-Benzyl-2-aminomalononitrile (3) was obtained in a good yield when aminomalononitrile p-toluenesulfonate (1) was treated with benzyl bromide (2) in THF using triethylamine as a base. The reaction proceeded in the presence of water. Compound 3 was hydrolyzed to afford phenylalanine. The aminomalononitrile route can explain the presence of not only 1 methylene in aromatic amino acids, but also α-hydrogen in all 20 proteinogenic amino acids.
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Affiliation(s)
- Chiaki Kuroda
- Department of Chemistry, Rikkyo University, Tokyo, Japan
| | | | | | - Kanako Tazawa
- Department of Chemistry, Rikkyo University, Tokyo, Japan
| | - Arisa Masuda
- Department of Chemistry, Rikkyo University, Tokyo, Japan
| | - Ryo Takeuchi
- Department of Chemistry, Rikkyo University, Tokyo, Japan
| | - Ayako Washio
- Department of Chemistry, Rikkyo University, Tokyo, Japan
| | - Hiroyuki Onuki
- Department of Chemistry, Rikkyo University, Tokyo, Japan
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10
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Washio A, Morotomi T, Yoshii S, Kitamura C. Bioactive Glass-Based Endodontic Sealer as a Promising Root Canal Filling Material without Semisolid Core Materials. Materials (Basel) 2019; 12:ma12233967. [PMID: 31795433 PMCID: PMC6926972 DOI: 10.3390/ma12233967] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Revised: 11/24/2019] [Accepted: 11/26/2019] [Indexed: 11/30/2022]
Abstract
Endodontic treatment for a tooth with damaged dental pulp aims to both prevent and cure apical periodontitis. If the tooth is re-infected as a result of a poorly obturated root canal, periapical periodontitis may set-in due to invading bacteria. To both avoid any re-infection and improve the success rate of endodontic retreatment, a treated root canal should be three-dimensionally obturated with a biocompatible filling material. Recently, bioactive glass, one of the bioceramics, is focused on the research area of biocompatible biomaterials for endodontics. Root canal sealers derived from bioactive glass-based have been developed and applied in clinical endodontic treatments. However, at present, there is little evidence about the patient outcomes, sealing mechanism, sealing ability, and removability of the sealers. Herein, we have developed a bioactive glass-based root canal sealer and provided evidence concerning its physicochemical properties, biocompatibility, sealing ability, and removability. We also review the classification of bioceramics and characteristics of bioactive glass. Additionally, we describe the application of bioactive glass to facilitate the development of a new root canal sealer. Furthermore, this review shows the potential application of bioactive glass-based cement as a root canal filling material in the absence of semisolid core material.
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11
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Fujino S, Hamano S, Tomokiyo A, Itoyama T, Hasegawa D, Sugii H, Yoshida S, Washio A, Nozu A, Ono T, Wada N, Kitamura C, Maeda H. Expression and function of dopamine in odontoblasts. J Cell Physiol 2019; 235:4376-4387. [PMID: 31612496 DOI: 10.1002/jcp.29314] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Accepted: 09/30/2019] [Indexed: 11/07/2022]
Abstract
Dopamine (DA) is produced from tyrosine by tyrosine hydroxylase (TH). A recent study has reported that DA promotes the mineralization of murine preosteoblasts. However, the role of DA in odontoblasts has not been examined. Therefore, in this investigation, we researched the expression of TH and DA in odontoblasts and the effects of DA on the differentiation of preodontoblasts (KN-3 cells). Immunostaining showed that TH and DA were intensely expressed in odontoblasts and preodontoblasts of rat incisors and molars. KN-3 cells expressed D1-like and D2-like receptors for DA. Furthermore, DA promoted odontoblastic differentiation of KN-3 cells, whereas an antagonist of D1-like receptors and a PKA signaling blocker, inhibited such differentiation. However, antagonists of D2-like receptors promoted differentiation. These results suggested that DA in preodontoblasts and odontoblasts might promote odontoblastic differentiation through D1-like receptors, but not D2-like receptors, and PKA signaling in an autocrine or paracrine manner and plays roles in dentinogenesis.
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Affiliation(s)
- Shoko Fujino
- Department of Endodontology and Operative Dentistry, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
| | - Sayuri Hamano
- Department of Endodontology and Operative Dentistry, Faculty of Dental Science, Kyushu University, Fukuoka, Japan.,OBT Research Center, Kyushu University, Fukuoka, Japan
| | - Atsushi Tomokiyo
- Department of Endodontology, Kyushu University Hospital, Fukuoka, Japan
| | - Tomohiro Itoyama
- Department of Endodontology and Operative Dentistry, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
| | - Daigaku Hasegawa
- Department of Endodontology, Kyushu University Hospital, Fukuoka, Japan
| | - Hideki Sugii
- Department of Endodontology, Kyushu University Hospital, Fukuoka, Japan
| | | | - Ayako Washio
- Division of Endodontics and Restorative Density, Department of Science of Oral Functions, Kyushu Dental University, Fukuoka, Japan
| | - Aoi Nozu
- Department of Endodontology and Operative Dentistry, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
| | - Taiga Ono
- Department of Endodontology and Operative Dentistry, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
| | - Naohisa Wada
- Division of General Dentistry, Kyushu University Hospital, Fukuoka, Japan
| | - Chiaki Kitamura
- Division of Endodontics and Restorative Density, Department of Science of Oral Functions, Kyushu Dental University, Fukuoka, Japan
| | - Hidefumi Maeda
- Department of Endodontology and Operative Dentistry, Faculty of Dental Science, Kyushu University, Fukuoka, Japan.,Department of Endodontology, Kyushu University Hospital, Fukuoka, Japan
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12
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Washio A, Teshima H, Yokota K, Kitamura C, Tabata Y. Preparation of gelatin hydrogel sponges incorporating bioactive glasses capable for the controlled release of fibroblast growth factor-2. J Biomater Sci Polym Ed 2019; 30:49-63. [PMID: 30470163 DOI: 10.1080/09205063.2018.1544474] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Gelatin hydrogel sponges incorporating bioactive glasses (Gel-BG) were fabricated. We evaluated the characteristics of Gel-BG as scaffolds from the perspective of their mechanical properties and the formation of hydroxyapatite by the incorporation of bioactive glasses (BG). In addition, the Gel-BG degradation and the profile of fibroblast growth factor-2 (FGF-2) release from the Gel-BG were examined. Every Gel-BG showed an interconnected pore structure with the pore size range of 180-200 µm. The compression modulus of sponges incorporating BG increased. The time profiles of degradation for the 72-h crosslinked gelatin hydrogel sponges incorporating 10 wt% BG (Gel-BG(10)) and 50 wt% BG (Gel-BG(50)) were analogous to that of the 24-h crosslinked gelatin hydrogel sponge without BG (Gel-BG(0)). In measuring the release of FGF-2 from Gel-BG, the Gel-BG(10) and Gel-BG(50) showed almost analogous 100% cumulative release within 28 days in vivo. Additionally, a bioactivity evaluation showed that the presence of gelatin does not affect the in vitro bioactivity of Gel-BG. These sponges showed mechanical and chemical functionality as scaffolds, featuring both the controlled release of FGF-2 and the induction of hydroxyapatite crystallization.
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Affiliation(s)
- Ayako Washio
- a Division of Endodontics and Restorative Dentistry, Department of Oral Functions , Kyushu Dental University , Kitakyushu , Japan
| | - Hiroki Teshima
- b Research and Development Department , Nippon Shika Yakuhin Co., Ltd , Shimonoseki , Japan
| | - Kazuyoshi Yokota
- b Research and Development Department , Nippon Shika Yakuhin Co., Ltd , Shimonoseki , Japan
| | - Chiaki Kitamura
- a Division of Endodontics and Restorative Dentistry, Department of Oral Functions , Kyushu Dental University , Kitakyushu , Japan
| | - Yasuhiko Tabata
- c Laboratory of Biomaterials, Department of Regeneration Science and Engineering , Institute for Frontier Life and Medical Sciences, Kyoto University , Kyoto , Japan
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13
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Abstract
Dental pulp is a connective tissue and has functions that include initiative, formative, protective, nutritive, and reparative activities. However, it has relatively low compliance, because it is enclosed in hard tissue. Its low compliance against damage, such as dental caries, results in the frequent removal of dental pulp during endodontic therapy. Loss of dental pulp frequently leads to fragility of the tooth, and eventually, a deterioration in the patient’s quality of life. With the development of biomaterials such as bioceramics and advances in pulp biology such as the identification of dental pulp stem cells, novel ideas for the preservation of dental pulp, the regenerative therapy of dental pulp, and new biomaterials for direct pulp capping have now been proposed. Therapies for dental pulp are classified into three categories; direct pulp capping, vital pulp amputation, and treatment for non-vital teeth. In this review, we discuss current and future treatment options in these therapies.
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Affiliation(s)
- Takahiko Morotomi
- Division of Endodontics and Restorative Dentistry, Department of Science of Oral Functions, Kyushu Dental University, 2-6-1 Manazuru, Kokurakita-ku, Kitakyushu 803-8580, Japan
| | - Ayako Washio
- Division of Endodontics and Restorative Dentistry, Department of Science of Oral Functions, Kyushu Dental University, 2-6-1 Manazuru, Kokurakita-ku, Kitakyushu 803-8580, Japan
| | - Chiaki Kitamura
- Division of Endodontics and Restorative Dentistry, Department of Science of Oral Functions, Kyushu Dental University, 2-6-1 Manazuru, Kokurakita-ku, Kitakyushu 803-8580, Japan
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14
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Hanada K, Morotomi T, Washio A, Yada N, Matsuo K, Teshima H, Yokota K, Kitamura C. In vitro and in vivo effects of a novel bioactive glass-based cement used as a direct pulp capping agent. J Biomed Mater Res B Appl Biomater 2018; 107:161-168. [PMID: 29575555 DOI: 10.1002/jbm.b.34107] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2017] [Revised: 02/14/2018] [Accepted: 02/26/2018] [Indexed: 01/29/2023]
Abstract
Direct pulp capping is an important procedure for preserving pulp viability. The pulp capping agent must possess several properties, including usability, biocompatibility, and the ability to induce reparative dentin formation. In this study, a novel bioactive glass-based cement was examined to determine whether the cement has the necessary properties to act as a direct pulp capping agent. Physicochemical properties of the bioactive glass-based cement and in vitro effects of the cement on odontoblast-like cells, as well as in vivo effects on the exposed dental pulp, were analyzed. The cement immersed in water stabilized at pH10, and hydroxyapatite-like precipitation was induced on the surface of the cement in simulate body fluid. There were no cytotoxic effects on the viability, alkaline phosphatase activity, or calcium deposition ability of odontoblast-like cells. In the in vivo rat study of an exposed dental pulp model, the cement induced a sufficient level of reparative dentin formation by odontoblast-like cells expressing odontoblastic markers at the exposed area of the dental pulp. These results suggest that the newly developed bioactive glass-based cement provides favorable biocompatibility with the dental pulp and may be useful as a direct pulp capping agent. © 2018 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 107B: 161-168, 2019.
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Affiliation(s)
- Kaori Hanada
- Division of Endodontics and Restorative Dentistry, Department of Science of Oral Functions, Kyushu Dental University, Fukuoka, Japan
| | - Takahiko Morotomi
- Division of Endodontics and Restorative Dentistry, Department of Science of Oral Functions, Kyushu Dental University, Fukuoka, Japan
| | - Ayako Washio
- Division of Endodontics and Restorative Dentistry, Department of Science of Oral Functions, Kyushu Dental University, Fukuoka, Japan
| | - Naomi Yada
- Division of Oral Pathology, Department of Health Promotion, Kyushu Dental University, Fukuoka, Japan
| | - Kou Matsuo
- Division of Oral Pathology, Department of Health Promotion, Kyushu Dental University, Fukuoka, Japan
| | | | | | - Chiaki Kitamura
- Division of Endodontics and Restorative Dentistry, Department of Science of Oral Functions, Kyushu Dental University, Fukuoka, Japan
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15
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Matsuyama A, Higashi S, Tanizaki S, Morotomi T, Washio A, Ohsumi T, Kitamura C, Takeuchi H. Celecoxib inhibits osteoblast differentiation independent of cyclooxygenase activity. Clin Exp Pharmacol Physiol 2017; 45:75-83. [PMID: 28815657 DOI: 10.1111/1440-1681.12846] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [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: 04/04/2017] [Revised: 08/01/2017] [Accepted: 08/09/2017] [Indexed: 01/04/2023]
Abstract
Non-steroidal anti-inflammatory drugs (NSAIDs) exert their effects primarily by inhibiting the activity of cyclooxygenase (COX), thus suppressing prostaglandin synthesis. Some NSAIDs are known to perform functions other than pain control, such as suppressing tumour cell growth, independent of their COX-inhibiting activity. To identify NSAIDs with COX-independent activity, we examined various NSAIDs for their ability to inhibit osteoblastic differentiation using the mouse pre-osteoblast cell line MC3T3-E1. Only celecoxib and valdecoxib strongly inhibited osteoblastic differentiation, and this effect was not correlated with COX-inhibiting activity. Moreover, 2,5-dimethyl (DM)-celecoxib, a celecoxib analogue that does not inhibit COX activity, also inhibited osteoblastic differentiation. Celecoxib and DM-celecoxib inhibited osteoblastic differentiation induced by bone morphogenetic protein (BMP)-2 in C2C12 mouse myoblast cell line. Although celecoxib suppresses the growth of some tumour cells, the viability and proliferation of MC3T3-E1 cells were not affected by celecoxib or DM-celecoxib. Instead, celecoxib and DM-celecoxib suppressed BMP-2-induced phosphorylation of Smad1/5, a major downstream target of BMP receptor. Although it is well known that COX plays important roles in osteoblastic differentiation, these results suggest that some NSAIDs, such as celecoxib, have targets other than COX and regulate phospho-dependent intracellular signalling, thereby modifying bone remodelling.
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Affiliation(s)
- Atsushi Matsuyama
- Division of Endodontics and Restorative Dentistry, Department of Oral Functions, Kyushu Dental University, Kitakyushu, Japan.,Division of Applied Pharmacology, Department of Health Promotion, Kyushu Dental University, Kitakyushu, Japan
| | - Sen Higashi
- Division of Applied Pharmacology, Department of Health Promotion, Kyushu Dental University, Kitakyushu, Japan
| | - Saori Tanizaki
- Division of Applied Pharmacology, Department of Health Promotion, Kyushu Dental University, Kitakyushu, Japan
| | - Takahiko Morotomi
- Division of Endodontics and Restorative Dentistry, Department of Oral Functions, Kyushu Dental University, Kitakyushu, Japan
| | - Ayako Washio
- Division of Endodontics and Restorative Dentistry, Department of Oral Functions, Kyushu Dental University, Kitakyushu, Japan
| | - Tomoko Ohsumi
- Division of Applied Pharmacology, Department of Health Promotion, Kyushu Dental University, Kitakyushu, Japan
| | - Chiaki Kitamura
- Division of Endodontics and Restorative Dentistry, Department of Oral Functions, Kyushu Dental University, Kitakyushu, Japan
| | - Hiroshi Takeuchi
- Division of Applied Pharmacology, Department of Health Promotion, Kyushu Dental University, Kitakyushu, Japan
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16
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Hirata-Tsuchiya S, Yoshii S, Ichimaru-Suematsu M, Washio A, Saito N, Urata M, Hanada K, Morotomi T, Kitamura C. Two-year clinical comparison of a flowable-type nano-hybrid composite and a paste-type composite in posterior restoration. J Investig Clin Dent 2016; 8. [PMID: 27378241 DOI: 10.1111/jicd.12227] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2016] [Accepted: 04/30/2016] [Indexed: 11/27/2022]
Abstract
AIM The purpose of the present study was to compare the clinical efficacy between a flowable-type nano-hybrid composite and a paste-type composite for posterior restoration. METHODS Of 62 posterior teeth in 33 patients (mean age: 34.1 years), 31 were filled with a paste-type composite (Heliomolar [HM] group), and another 31 with a flowable nano-hybrid composite (MI FIL [MI] group). Clinical efficacy was evaluated at 2 years after the restoration. RESULTS There were no differences for retention, surface texture deterioration, anatomical form change, deterioration of marginal adaptation, and secondary caries, while a statistical difference was found for marginal discoloration, which was significantly greater in the HM group (P < 0.05). Furthermore, color matching in the MI group was superior to that in the HM group immediately after the restoration throughout the study period. CONCLUSIONS The present 2-year clinical evaluation of different composites showed that the flowable nano-hybrid composite could be an effective esthetic material for posterior restoration.
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Affiliation(s)
- Shizu Hirata-Tsuchiya
- Department of Oral Functions, Division of Endodontics and Restorative Dentistry, Kyushu Dental University, Kitakyushu, Fukuoka, Japan
| | - Shinji Yoshii
- Department of Oral Functions, Division of Endodontics and Restorative Dentistry, Kyushu Dental University, Kitakyushu, Fukuoka, Japan
| | - Miki Ichimaru-Suematsu
- Department of Oral Functions, Division of Endodontics and Restorative Dentistry, Kyushu Dental University, Kitakyushu, Fukuoka, Japan
| | - Ayako Washio
- Department of Oral Functions, Division of Endodontics and Restorative Dentistry, Kyushu Dental University, Kitakyushu, Fukuoka, Japan
| | - Noriko Saito
- Department of Oral Functions, Division of Endodontics and Restorative Dentistry, Kyushu Dental University, Kitakyushu, Fukuoka, Japan
| | - Mariko Urata
- Department of Oral Functions, Division of Endodontics and Restorative Dentistry, Kyushu Dental University, Kitakyushu, Fukuoka, Japan
| | - Kaori Hanada
- Department of Oral Functions, Division of Endodontics and Restorative Dentistry, Kyushu Dental University, Kitakyushu, Fukuoka, Japan
| | - Takahiko Morotomi
- Department of Oral Functions, Division of Endodontics and Restorative Dentistry, Kyushu Dental University, Kitakyushu, Fukuoka, Japan
| | - Chiaki Kitamura
- Department of Oral Functions, Division of Endodontics and Restorative Dentistry, Kyushu Dental University, Kitakyushu, Fukuoka, Japan
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17
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Morotomi T, Hirata-Tsuchiya S, Washio A, Kitamura C. Effects of 4-META/MMA-TBB Resin at Different Curing Stages on Osteoblasts and Gingival Epithelial Cells. J Adhes Dent 2016; 18:111-8. [PMID: 27022642 DOI: 10.3290/j.jad.a35839] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
PURPOSE To assess the effects of different curing stages of 4-META/MMA-TBB resin on osteoblasts and gingival keratinocytes. MATERIALS AND METHODS The MC3T3-E1 murine pre-osteoblastic cell line and GE-1 murine gingival epithelial cell line were cultured with mixtures of Super-Bond C&B at different curing stages, and the cell viability was assessed. The alkaline phosphatase (ALP) activity of the MC3T3-E1 cells was also assessed. RESULTS The majority of the MC3T3-E1 cells died and showed no ALP activity when cultured with 4-META/MMA-TBB resin during the initial curing phase (1 min of curing). A later curing phase of the 4-META/MMA-TBB resin (7 min of curing) showed cytotoxicity at day 1, but the toxic effect was temporary and the proliferative capacity and ALP activity in the cells were similar to control cells at day 7. Completely cured 4-META/MMA-TBB resin (after 1 or 12 h of curing) did not affect the cell viability or ALP activity of the MC3T3-E1 cells. In contrast, 4-META/MMA-TBB resin showed no effect on the GE-1 cells at any stage of curing. CONCLUSION Although 4-META/MMA-TBB resin during the initial curing phase shows toxic effects on MC3T3-E1 cells, that cytotoxicity is minimal at later curing phases. In contrast, neither the uncured nor cured resins affected the GE-1 cells.
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18
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Yeom KH, Ariyoshi W, Okinaga T, Washio A, Morotomi T, Kitamura C, Nishihara T. Platelet-rich plasma enhances the differentiation of dental pulp progenitor cells into odontoblasts. Int Endod J 2015; 49:271-8. [DOI: 10.1111/iej.12443] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2014] [Accepted: 02/19/2015] [Indexed: 01/09/2023]
Affiliation(s)
- K. H. Yeom
- Division of Infections and Molecular Biology; Department of Health Promotion; Kyushu Dental University; Kitakyushu Japan
- Division of Endodontics and Restorative Dentistry; Department of Science of Oral Functions; Kyushu Dental University; Kitakyushu Japan
| | - W. Ariyoshi
- Division of Infections and Molecular Biology; Department of Health Promotion; Kyushu Dental University; Kitakyushu Japan
| | - T. Okinaga
- Division of Infections and Molecular Biology; Department of Health Promotion; Kyushu Dental University; Kitakyushu Japan
| | - A. Washio
- Division of Endodontics and Restorative Dentistry; Department of Science of Oral Functions; Kyushu Dental University; Kitakyushu Japan
| | - T. Morotomi
- Division of Endodontics and Restorative Dentistry; Department of Science of Oral Functions; Kyushu Dental University; Kitakyushu Japan
| | - C. Kitamura
- Division of Endodontics and Restorative Dentistry; Department of Science of Oral Functions; Kyushu Dental University; Kitakyushu Japan
| | - T. Nishihara
- Division of Infections and Molecular Biology; Department of Health Promotion; Kyushu Dental University; Kitakyushu Japan
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19
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Washio A, Nakagawa A, Nishihara T, Maeda H, Kitamura C. Physicochemical properties of newly developed bioactive glass cement and its effects on various cells. J Biomed Mater Res B Appl Biomater 2014; 103:373-80. [DOI: 10.1002/jbm.b.33209] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2013] [Revised: 04/12/2014] [Accepted: 04/29/2014] [Indexed: 11/07/2022]
Affiliation(s)
- Ayako Washio
- Division of Endodontics and Restorative Dentistry; Department of Science of Oral Functions; Kyushu Dental University; Japan
| | - Aika Nakagawa
- Division of Endodontics and Restorative Dentistry; Department of Science of Oral Functions; Kyushu Dental University; Japan
| | - Tatsuji Nishihara
- Division of Infections and Molecular Biology; Department of Health Promotion; Kyushu Dental University; Japan
| | - Hidefumi Maeda
- Division of Oral Rehabilitation; Department of Endodontology and Operative Dentistry; Kyushu University; Japan
| | - Chiaki Kitamura
- Division of Endodontics and Restorative Dentistry; Department of Science of Oral Functions; Kyushu Dental University; Japan
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20
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Yano J, Kitamura C, Nishihara T, Tokuda M, Washio A, Chen KK, Terashita M. Apoptosis and survivability of human dental pulp cells under exposure to Bis-GMA. J Appl Oral Sci 2011; 19:218-22. [PMID: 21625736 PMCID: PMC4234332 DOI: 10.1590/s1678-77572011000300007] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [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: 06/19/2009] [Accepted: 03/27/2010] [Indexed: 12/29/2022] Open
Abstract
Objective In the present study, we examined whether 2, 2-bis
[4-(2-hydroxy-3methacryloxypropoxy) phenyl] propane (Bis-GMA) has effects on LSC2
cells, human dental pulp cell line. Material and Methods The viability, cell cycle, and morphology of LSC2 cells were analyzed after
exposure to several different concentrations of Bis-GMA. The recovery of viability
of Bis-GMA exposed cells was also analyzed in the condition without Bis-GMA.
Further, penetration of Bis-GMA to dentin disc was examined using isocratic
high-performance liquid chromatography. Results There was a concentration-dependent decrease in cell proliferation and an increase
in cell number in the sub-G1 population after exposure to Bis-GMA. Furthermore,
the cells showed typical characteristics of apoptotic cells after the exposure to
high concentration of Bis-GMA. In contrast, cells exposed to lower concentrations
of Bis-GMA recovered their viability after being cultured without Bis-GMA. We also
found that Bis-GMA is capable of penetrating 1-mm-thick dentin discs, though the
penetrated concentration was lower than that showing cytotoxicity. Conclusion These results suggest that Bis-GMA has cytotoxic effects, though dental pulp
exposed to lower concentrations is able to recover their viability when Bis-GMA is
removed.
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Affiliation(s)
- Junya Yano
- Division of Pulp Biology, Operative Dentistry, and Endodontics, Department of Cariology and Periodontology, Kyushu Dental College, Japan
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Morotomi T, Kitamura C, Toyono T, Okinaga T, Washio A, Saito N, Nishihara T, Terashita M, Anan H. Effects of Heat Stress and Starvation on Clonal Odontoblast-like Cells. J Endod 2011; 37:955-61. [DOI: 10.1016/j.joen.2011.03.037] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2010] [Revised: 03/29/2011] [Accepted: 03/31/2011] [Indexed: 10/18/2022]
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Washio A, Kitamura C, Jimi E, Terashita M, Nishihara T. Mechanisms involved in suppression of NGF-induced neuronal differentiation of PC12 cells by hyaluronic acid. Exp Cell Res 2009; 315:3036-43. [PMID: 19615362 DOI: 10.1016/j.yexcr.2009.07.006] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2009] [Revised: 07/05/2009] [Accepted: 07/08/2009] [Indexed: 01/10/2023]
Abstract
In the present study, we found that hyaluronic acid (HA) suppressed the neuronal differentiation mediated by nerve growth factor (NGF). In addition, we examined the mechanism by which HA inhibits the NGF-induced neurite outgrowth of PC12 cells. We elucidated the direct interaction between NGF and HA, and found that HA did not bind to NGF directly using a quartz-crystal microbalance. Western blot analysis revealed that HA suppressed NGF-induced phosphorylation of p38 MAPK, ERKs, and transcriptional factor CREB in PC12 cells. Furthermore, HA inhibited the luciferase activity of pCRE-Luc transfected PC12 cells in the presence of NGF. We confirmed that the p38 MAPK inhibitor SB203580 and ERK inhibitor U0126 suppressed NGF-induced neurite outgrowth of PC12 cells, and found that the inhibitory effects of HA on phosphorylation of ERKs, but not of p38 MAPK, were restored by the anti-RHAMM antibody. The number of PC12 cells with neurites increased remarkably when pre-cultured with the anti-RHAMM antibody, then treated with NGF and HA. Our findings indicate that HA inhibits NGF-induced neuronal differentiation of PC12 cells partially by inhibiting ERK phosphorylation through RHAMM, and suggest that the binding of HA to RHAMM modifies the signaling pathways in PC12 cells treated with NGF.
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Affiliation(s)
- Ayako Washio
- Department of Health Promotion, Kyushu Dental College, Kokurakita-ku, Kitakyushu 803-8580, Japan
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Sakashita I, Nakamura C, Otani A, Washio A, Asano K. [Mitral valve replacement and the giant left atrium, with special reference to its long-term prognosis]. Nihon Kyobu Geka Gakkai Zasshi 1976; 24:1-6. [PMID: 130429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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