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Giordano-Kelhoffer B, Rodríguez-Gonzalez R, Perpiñan-Blasco M, Buitrago JO, Bosch BM, Perez RA. A Novel Chitosan Composite Biomaterial with Drug Eluting Capacity for Maxillary Bone Regeneration. MATERIALS (BASEL, SWITZERLAND) 2023; 16:ma16020685. [PMID: 36676422 PMCID: PMC9866710 DOI: 10.3390/ma16020685] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 12/27/2022] [Accepted: 01/06/2023] [Indexed: 06/09/2023]
Abstract
Bone grafting is one of the most commonly performed treatments for bone healing or repair. Autografts, grafts from the same patient, are the most frequently used bone grafts because they can provide osteogenic cells and growth factors at the site of the implant with reduced risk of rejection or transfer of diseases. Nevertheless, this type of graft presents some drawbacks, such as pain, risk of infection, and limited availability. For this reason, synthetic bone grafts are among the main proposals in regenerative medicine. This branch of medicine is based on the development of new biomaterials with the goal of increasing bone healing capacity and, more specifically in dentistry, they aim at simultaneously preventing or eliminating bacterial infections. The use of fibers made of chitosan (CS) and hydroxyapatite (HA) loaded with an antibiotic (doxycycline, DX) and fabricated with the help of an injection pump is presented as a new strategy for improving maxillary bone regeneration. In vitro characterization of the DX controlled released from the fibers was quantified after mixing different amounts of HA (10-75%). The 1% CS concentration was stable, easy to manipulate and exhibited adequate cuttability and pH parameters. The hydroxyapatite concentration dictated the combined fast and controlled release profile of CSHA50DX. Our findings demonstrate that the CS-HA-DX complex may be a promising candidate graft material for enhancing bone tissue regeneration in dental clinical practice.
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Affiliation(s)
- Barbara Giordano-Kelhoffer
- Bioengineering Institute of Technology, Universitat Internacional de Catalunya (UIC), 08017 Barcelona, Spain
- Faculty of Dentistry, Universitat Internacional de Catalunya (UIC), 08017 Barcelona, Spain
| | - Raquel Rodríguez-Gonzalez
- Bioengineering Institute of Technology, Universitat Internacional de Catalunya (UIC), 08017 Barcelona, Spain
- Faculty of Medicine and Health Sciences, Basic Science Department Universitat Internacional de Catalunya (UIC), 08017 Barcelona, Spain
| | - Marina Perpiñan-Blasco
- Bioengineering Institute of Technology, Universitat Internacional de Catalunya (UIC), 08017 Barcelona, Spain
- Faculty of Medicine and Health Sciences, Basic Science Department Universitat Internacional de Catalunya (UIC), 08017 Barcelona, Spain
| | - Jenifer O. Buitrago
- Bioengineering Institute of Technology, Universitat Internacional de Catalunya (UIC), 08017 Barcelona, Spain
- Faculty of Medicine and Health Sciences, Basic Science Department Universitat Internacional de Catalunya (UIC), 08017 Barcelona, Spain
| | - Begoña M. Bosch
- Bioengineering Institute of Technology, Universitat Internacional de Catalunya (UIC), 08017 Barcelona, Spain
- Faculty of Medicine and Health Sciences, Basic Science Department Universitat Internacional de Catalunya (UIC), 08017 Barcelona, Spain
| | - Roman A. Perez
- Bioengineering Institute of Technology, Universitat Internacional de Catalunya (UIC), 08017 Barcelona, Spain
- Faculty of Medicine and Health Sciences, Basic Science Department Universitat Internacional de Catalunya (UIC), 08017 Barcelona, Spain
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Sacco R, Sartoretto SC, de Brito Resende RF, de Albuquerque Calasans-Maia J, Rossi AM, de Souza Lima VH, de Almeida Barros Mourão CF, Granjeiro JM, Yates J, Calasans-Maia MD. The Use of Hydroxyapatite Loaded with Doxycycline (HADOX) in Dentoalveolar Surgery as a Risk-Reduction Therapeutic Protocol in Subjects Treated with Different Bisphosphonate Dosages. Medicina (B Aires) 2022; 59:medicina59010046. [PMID: 36676670 PMCID: PMC9861076 DOI: 10.3390/medicina59010046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 11/26/2022] [Accepted: 12/02/2022] [Indexed: 12/28/2022] Open
Abstract
Medication-related osteonecrosis of the jaw (MRONJ) is considered as a severe adverse side effect of specific drugs such as anti-resorptive and anti-angiogenic medications. Evidence suggests that MRONJ is linked to invasive dental procedures, mainly dentoalveolar surgery. Several preventive strategies to minimize the risk of developing MRONJ have been investigated. However, no investigation has been attempted to evaluate the therapeutic effect of local drug-delivery technology as a preventive strategy protocol. The aim of this study is to evaluate the efficacy of hydroxyapatite-containing doxycycline (HADOX) in rats with high-risk MRONJ development. All the rats used in this study were divided into seven groups. Six groups of rats out of seven were exposed to two different doses of antiresorptive drug therapy for four weeks before undergoing an upper incisor extraction. After 28 days, all the animals were euthanized, and the bone blocks were processed for histological and histomorphometrical evaluation. The histomorphometric analysis confirmed that newly formed bone (NFB) was present in all groups, with significant differences. NFB in the HADOX group treated with zoledronic acid at 4% showed (28.38; C.I. 22.29-34.48), which represents a significant increase compared to HA (15.69; C.I. 4.89-26.48) (p = 0.02). A similar pattern was observed in the HADOX group treated with zoledronic acid 8% ZA treatment (p = 0.001). Conclusions: HADOX did not inhibit any bone repair and reduced early inflammatory response. Hence, HADOX could promote bone healing in patients undergoing antiresorptive drug therapy.
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Affiliation(s)
- Roberto Sacco
- Oral Surgery Department, School of Medical Sciences, Division of Dentistry, The University of Manchester, Coupland 3 Building, Oxford Rd, Manchester M13 9PL, UK
- Oral Surgery Department, Dental School, Fluminense Federal University, Rio de Janeiro 24020-140, Brazil
- Correspondence: ; Tel.:+44-020-3299-32496
| | | | | | | | - Alexandre Malta Rossi
- Brazilian Center for Research in Physics, Applied Physics and Nanoscience, Department of Condensed Matter, Rio de Janeiro 22290-180, Brazil
| | - Victor Hugo de Souza Lima
- Graduate Program, Faculty of Sciences and Biotechnology, Fluminense Federal University, Niteroi 24210-201, Brazil
| | | | - Jose Mauro Granjeiro
- National Institute of Metrology, Quality and Technology (INMETRO), Duque de Caxias, Rio de Janeiro 25250-020, Brazil
| | - Julian Yates
- Oral Surgery Department, School of Medical Sciences, Division of Dentistry, The University of Manchester, Coupland 3 Building, Oxford Rd, Manchester M13 9PL, UK
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López-Valverde N, Macedo-de-Sousa B, López-Valverde A, Ramírez JM. Effectiveness of Antibacterial Surfaces in Osseointegration of Titanium Dental Implants: A Systematic Review. Antibiotics (Basel) 2021; 10:antibiotics10040360. [PMID: 33800702 PMCID: PMC8066819 DOI: 10.3390/antibiotics10040360] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 03/23/2021] [Accepted: 03/26/2021] [Indexed: 12/15/2022] Open
Abstract
Titanium (Ti) dental implant failure as a result of infection has been established at 40%, being regarded as one of the most habitual and untreatable problems. Current research is focused on the design of new surfaces that can generate long-lasting, infection-free osseointegration. The purpose of our study was to assess studies on Ti implants coated with different antibacterial surfaces, assessing their osseointegration. The PubMed, Web of Science and Scopus databases were electronically searched for in vivo studies up to December 2020, selecting six studies that met the inclusion criteria. The quality of the selected studies was assessed using the ARRIVE (Animal Research: Reporting of In Vivo Experiments) criteria and Systematic Review Center for Laboratory animal Experimentation's (SYRCLE's) risk of bias tool. Although all the included studies, proved greater osseointegration capacity of the different antibacterial surfaces studied, the methodological quality and experimental models used in some of them make it difficult to draw predictable conclusions. Because of the foregoing, we recommend caution when interpreting the results obtained.
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Affiliation(s)
- Nansi López-Valverde
- Department of Surgery, Instituto de Investigación Biomédica de Salamanca (IBSAL), University of Salamanca, 37007 Salamanca, Spain;
| | - Bruno Macedo-de-Sousa
- Institute for Occlusion and Orofacial Pain, Faculty of Medicine, University of Coimbra, Polo I-Edifício Central Rua Larga, 3004-504 Coimbra, Portugal;
| | - Antonio López-Valverde
- Department of Surgery, Instituto de Investigación Biomédica de Salamanca (IBSAL), University of Salamanca, 37007 Salamanca, Spain;
- Correspondence:
| | - Juan Manuel Ramírez
- Department of Morphological Sciences, University of Cordoba, Avenida Menéndez Pidal S/N, 14071 Cordoba, Spain;
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4
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El-Habashy S, Eltaher H, Gaballah A, Mehanna R, El-Kamel AH. Biomaterial-Based Nanocomposite for Osteogenic Repurposing of Doxycycline. Int J Nanomedicine 2021; 16:1103-1126. [PMID: 33603371 PMCID: PMC7887185 DOI: 10.2147/ijn.s298297] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2020] [Accepted: 01/20/2021] [Indexed: 02/05/2023] Open
Abstract
Background Besides its antimicrobial action, doxycycline (DX) has lately been repurposed as a small-molecule drug for osteogenic purposes. However, osteogenic DX application is impeded by its dose-dependent cytotoxicity. Further, high-dose DX impairs cell differentiation and mineralization. Purpose Integrating DX into a biomaterial-based delivery system that can control its release would not only ameliorate its cytotoxic actions but also augment its osteogenic activity. In this work, we managed to engineer novel composite DX–hydroxyapatite–polycaprolactone nanoparticles (DX/HAp/PCL) to modify DX osteogenic potential. Methods Employing a 23-factorial design, we first optimized HApN for surface-area attributes to maximize DX loading. Composite DX/HAp/PCL were then realized using a simple emulsification technique, characterized using various in vitro methods, and evaluated for in vitro osteogenesis. Results The developed HApN exhibited a favorable crystalline structure, Ca:P elemental ratio (1.67), mesoporous nature, and large surface area. DX/HAp/PCL achieved the highest reported entrapment efficiency (94.77%±1.23%) of DX in PCL-based particles. The developed composite system achieved controlled release of the water-soluble DX over 24 days. Moreover, the novel composite nanosystem managed to significantly ameliorate DX cytotoxicity on bone-marrow stem cells, as well as enhance its overall proliferation potential. Alkaline phosphatase and mineralization assays revealed superior osteodifferentiation potential of the composite system. Quantification of gene expression demonstrated that while DX solution was able to drive bone-marrow stem cells down the osteogenic lineage into immature osteoblasts after 10-day culture, the innovative composite system allowed maturation of osteodifferentiated cells. To the best of our knowledge, this is the first work to elaborate the impact of DX on the expression of osteogenic genes: RUNX2, OSP, and BSP. Further, the osteogenicity of a DX-loaded particulate-delivery system has not been previously investigated. Conclusion Our findings indicate that repurposing low-dose DX in complementary biomaterial-based nanosystems can offer a prominent osteogenic candidate for bone-regeneration purposes.
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Affiliation(s)
- Salma El-Habashy
- Department of Pharmaceutics, Faculty of Pharmacy, Alexandria University, Alexandria, 21521, Egypt
| | - Hoda Eltaher
- Department of Pharmaceutics, Faculty of Pharmacy, Alexandria University, Alexandria, 21521, Egypt
| | - Ahmed Gaballah
- Microbiology Department, Medical Research Institute, Alexandria University, Alexandria, 21561, Egypt
| | - Radwa Mehanna
- Medical Physiology Department, Faculty of Medicine, Alexandria University, Alexandria, 21131, Egypt.,Center of Excellence for Research in Regenerative Medicine and Applications CERRMA, Faculty of Medicine, Alexandria University, Alexandria, 21131, Egypt
| | - Amal H El-Kamel
- Department of Pharmaceutics, Faculty of Pharmacy, Alexandria University, Alexandria, 21521, Egypt
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5
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Ghiasi B, Sefidbakht Y, Mozaffari-Jovin S, Gharehcheloo B, Mehrarya M, Khodadadi A, Rezaei M, Ranaei Siadat SO, Uskoković V. Hydroxyapatite as a biomaterial - a gift that keeps on giving. Drug Dev Ind Pharm 2020; 46:1035-1062. [PMID: 32476496 DOI: 10.1080/03639045.2020.1776321] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The synthetic analogue to biogenic apatite, hydroxyapatite (HA) has a number of physicochemical properties that make it an attractive candidate for diagnosis, treatment of disease and augmentation of biological tissues. Here we describe some of the recent studies on HA, which may provide bases for a number of new medical applications. The content of this review is divided to different medical application modes utilizing HA, including tissue engineering, medical implants, controlled drug delivery, gene therapies, cancer therapies and bioimaging. A number of advantages of HA over other biomaterials emerge from this discourse, including (i) biocompatibility, (ii) bioactivity, (iii) relatively simple synthesis protocols for the fabrication of nanoparticles with specific sizes and shapes, (iv) smart response to environmental stimuli, (v) facile functionalization and surface modification through noncovalent interactions, and (vi) the capacity for being simultaneously loaded with a wide range of therapeutic agents and switched to bioimaging modalities for uses in theranostics. A special section is dedicated to analysis of the safety of particulate HA as a component of parenterally administrable medications. It is concluded that despite the fact that many benefits come with the usage of HA, its deficiencies and potential side effects must be addressed before the translation to the clinical domain is pursued. Although HA has been known in the biomaterials world as the exemplar of safety, this safety proves to be the function of size, morphology, surface ligands and other structural and compositional parameters defining the particles. For this reason, each HA, especially when it comes in a novel structural form, must be treated anew from the safety research angle before being allowed to enter the clinical stage.
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Affiliation(s)
- Behrad Ghiasi
- Protein Research Center, Shahid Beheshti University, Tehran, Iran
| | - Yahya Sefidbakht
- Protein Research Center, Shahid Beheshti University, Tehran, Iran.,Nanobiotechnology Laboratory, The Faculty of New Technologies Engineering (NTE), Shahid Beheshti University, Tehran, Iran
| | - Sina Mozaffari-Jovin
- Medical Genetics Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.,Department of Medical Genetics, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | | | | | - Arash Khodadadi
- Department of Pharmaceutics, Faculty of Pharmacy, Kerman University of Medical Science, Kerman, Iran
| | - Maryam Rezaei
- Institute of Biochemistry and Biophysics (IBB), Tehran University, Tehran, Iran
| | - Seyed Omid Ranaei Siadat
- Protein Research Center, Shahid Beheshti University, Tehran, Iran.,Nanobiotechnology Laboratory, The Faculty of New Technologies Engineering (NTE), Shahid Beheshti University, Tehran, Iran
| | - Vuk Uskoković
- Department of Mechanical and Aerospace Engineering, University of California, Irvine, CA, USA
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6
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Soriano-Souza C, Valiense H, Mavropoulos E, Martinez-Zelaya V, Costa AM, Alves AT, Longuinho M, Resende R, Mourão C, Granjeiro J, Rocha-Leao MH, Rossi A, Calasans-Maia M. Doxycycline containing hydroxyapatite ceramic microspheres as a bone-targeting drug delivery system. J Biomed Mater Res B Appl Biomater 2019; 108:1351-1362. [PMID: 31496111 DOI: 10.1002/jbm.b.34484] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2019] [Revised: 07/26/2019] [Accepted: 08/17/2019] [Indexed: 01/24/2023]
Abstract
Drug delivery technology is a promising way to enhance the therapeutic efficacy of drugs. The purpose of this study is to evaluate the physical and chemical properties of hydroxyapatite ceramic microspheres loaded with doxycycline (HADOX), their effects on in vitro osteoblast viability, and their antimicrobial activity, and to determine the effects of DOX on the healing of rat sockets after tooth extraction. The internal microsphere porosity was sensitive to the treatment used to adsorb DOX onto microsphere surface; HA microspheres without DOX presented 26% of pores, whereas HADOX0.15 microspheres presented 52.0%. An initial drug release of 49.15 μg/ml was observed in the first 24 hr. The minimal inhibitory concentration (MIC) tested against Enterococcus faecalis demonstrated that bacterial growth was inhibited for up to 7 days. Results of cell viability and cell proliferation did not indicate statistical differences in the metabolic activity of HADOX samples relative to HA without DOX microspheres (p > .05). After 1 week, a discreet inflammation reaction was observed in the control group, and after 6 weeks, newly-formed bone was observed in the HADOX0.15 (p < .05). The HADOX did not interfere in the bone repair and controlled the early inflammatory response. HADOX could be a promising biomaterial to promote bone repair in infected sites.
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Affiliation(s)
- Carlos Soriano-Souza
- Department of Applied Physics, Brazilian Center for Physics Research, Rio de Janeiro, Brazil
| | - Helder Valiense
- Dentistry School, Federal Fluminense University, Rio de Janeiro, Brazil
| | - Elena Mavropoulos
- LABIOMAT, Brazilian Center for Physics Research, Rio de Janeiro, Brazil
| | | | | | - Adriana T Alves
- Department of Oral Pathology, Federal Fluminense University, Rio de Janeiro, Brazil
| | - Mariana Longuinho
- Department of Applied Physics, Brazilian Center for Physics Research, Rio de Janeiro, Brazil
| | - Rodrigo Resende
- Oral Surgery Department, Fluminense Federal University, Rio de Janeiro, Brazil
| | - Carlos Mourão
- Unidade de Pesquisa Clínica, Universidade Federal Fluminense, Rio de Janeiro, Brazil
| | - Jose Granjeiro
- Department of Bioengineering, National Institute of Metrology, Standardization and Industrial Quality, Rio de Janeiro, Brazil
| | - Maria H Rocha-Leao
- Chemistry School, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Alexandre Rossi
- Department of Applied Physics, Brazilian Center for Physics Research, Rio de Janeiro, Brazil
| | - Mônica Calasans-Maia
- Oral Surgery Department, Dentistry School, Fluminense Federal University, Rio de Janeiro, Brazil
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7
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Calasans-Maia MD, Barboza Junior CAB, Soriano-Souza CA, Alves ATNN, Uzeda MJDP, Martinez-Zelaya VR, Mavropoulos E, Rocha Leão MH, de Santana RB, Granjeiro JM, Rossi AM. Microspheres of alginate encapsulated minocycline-loaded nanocrystalline carbonated hydroxyapatite: therapeutic potential and effects on bone regeneration. Int J Nanomedicine 2019; 14:4559-4571. [PMID: 31417258 PMCID: PMC6600321 DOI: 10.2147/ijn.s201631] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Accepted: 04/01/2019] [Indexed: 01/12/2023] Open
Abstract
Background and objective: Tetracycline and its derivatives, combined with calcium phosphates, have been proposed as a delivery system to control inflammatory processes and chronic infections. The objective of this study was to evaluate the microspheres of alginate encapsulated minocycline-loaded nanocrystalline carbonated hydroxyapatite (CHAMINO) as a biomimetic device to carry out target-controlled drug delivery for alveolar bone repair. Methods: CHAMINO microspheres were implanted in a rat central incisor socket after 7 and 42 days. New bone was formed in both groups between 7 and 42 days of implantation. However, the bone growth was significantly higher for the CHAMINO microspheres. Results: The minocycline (MINO) loading capacity of the nanocrystaline carbonated hydroxyapatite (CHA) nanoparticles was 25.1±2.2 µg MINO/mg CHA for adsorption over 24 hrs. The alginate microspheres containing minocycline-loaded CHA were biologically active and inhibited the Enterococcus faecalis culture growth for up to seven days of the MINO release. An osteoblastic cell viability assay based on the resazurin reduction was conducted after the cells were exposed to the CHAMINO powder and CHAMINO microspheres. Thus, it was found that the alginate extracts encapsulated the minocycline-loaded CHA microspheres and did not affect the osteoblastic cell viability, while the minocycline-doped CHA powder reduced the cell viability by 90%. Conclusion: This study concluded that the alginate microspheres encapsulating the minocycline-loaded nanocrystalline carbonated hydroxyapatite exhibited combined antibacterial activity against Enterococcus faecalis with cytocompatibility and osteoconduction properties. The significant improvement in the new bone formation after 42 days of implantation suggests that the CHAMINO microsphere has potential in clinical applications of bone regeneration.
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Affiliation(s)
- Mônica Diuana Calasans-Maia
- Clinical Research in Dentistry Laboratory, School of Dentistry, Federal Fluminense University, Niterói, Rio de Janeiro, Brazil
| | | | - Carlos Alberto Soriano-Souza
- Department of Condensed Matter, Applied Physics and Nanoscience, Brazilian Center for Research in Physics, Rio de Janeiro, Brazil
| | | | - Marcelo Jose de Pinheiro Uzeda
- Clinical Research in Dentistry Laboratory, School of Dentistry, Federal Fluminense University, Niterói, Rio de Janeiro, Brazil
| | - Victor R Martinez-Zelaya
- Department of Condensed Matter, Applied Physics and Nanoscience, Brazilian Center for Research in Physics, Rio de Janeiro, Brazil
| | - Elena Mavropoulos
- Department of Condensed Matter, Applied Physics and Nanoscience, Brazilian Center for Research in Physics, Rio de Janeiro, Brazil
| | - Maria Helena Rocha Leão
- Department of Biochemical Engineering, School of Chemistry, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Ronaldo Barcellos de Santana
- Department of Periodontology, School of Dentistry, Federal Fluminense University, Niterói, Rio de Janeiro, Brazil
| | - Jose Mauro Granjeiro
- Clinical Research in Dentistry Laboratory, School of Dentistry, Federal Fluminense University, Niterói, Rio de Janeiro, Brazil
| | - Alexandre Malta Rossi
- Department of Condensed Matter, Applied Physics and Nanoscience, Brazilian Center for Research in Physics, Rio de Janeiro, Brazil
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8
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Zhang P, Ding L, Kasugai S. Effect of doxycycline doped bone substitute on vertical bone augmentation on rat calvaria. Dent Mater J 2018; 38:211-217. [PMID: 30504694 DOI: 10.4012/dmj.2017-434] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Bio-Oss (BO), one of the bone substitutes, is extensively used for augmentation in dental field because it is highly biocompatible and osteoconductive, which however does not stimulate bone formation. Doxycycline (DOX), a widely-used antibiotic, shows inhibitory effects on inflammation and osteoclastogenesis, and it has been reported to stimulate bone formation. The objective of this study is to investigate the vertical bone formation with DOX doped BO in guided bone regeneration on rat calvaria. Forty rats underwent calvarial vertical augmentation surgeries. Twenty rats received BO whereas the others received DOX doped BO. The calvarias were harvested and analyzed radiologically, histologically and with RT-PCR at 4 and 8 weeks postoperatively. At 4 weeks, the area of mineralized new bone statistically increased in BO+DOX compared to BO, upregulations of TGFβ1, BMP2 and β-catenin were evident in BO+DOX. The present study demonstrates that BO+DOX improve vertical bone augmentation.
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Affiliation(s)
- Peng Zhang
- Department of Oral Implantology and Regenerative Dental Medicine, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
| | - Lin Ding
- Department of Oral Implantology and Regenerative Dental Medicine, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University.,Foshan Stomatology Hospital, School of Stomatology and Medicine, Foshan University
| | - Shohei Kasugai
- Department of Oral Implantology and Regenerative Dental Medicine, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
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9
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Ding L, Zhang P, Wang X, Kasugai S. A doxycycline-treated hydroxyapatite implant surface attenuates the progression of peri-implantitis: A radiographic and histological study in mice. Clin Implant Dent Relat Res 2018; 21:154-159. [PMID: 30444054 DOI: 10.1111/cid.12695] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Revised: 09/08/2018] [Accepted: 10/14/2018] [Indexed: 10/27/2022]
Abstract
BACKGROUND Oral rehabilitation with dental implants has become increasingly common; however, the increase of peri-implantitis is a great concern. Doxycycline (DOX) is a widely used antibiotic that inhibits bacteria growth, inflammation, and bone resorption. OBJECTIVES To evaluate the progression of peri-implantitis of hydroxyapatite (HA)-coated implants with (5 mg/mL, DOX group) or without (HA group) DOX treatment on the surface. MATERIALS AND METHODS The maxillary first molars of 20 male mice were extracted. Eight weeks later, small titanium screw implants coated with thin HA and treated with or without DOX were placed at the extracted sites. Four weeks after implant placement, half of the animals in both groups were sacrificed, and ligatures were placed around the implant necks in the other half. These mice were sacrificed 4 weeks later. The bone around the implants was examined radiologically and histologically. RESULTS Four weeks after the ligature placement, the radiographic measurements revealed that peri-implant bone levels of palatal and mesial sites, and histological measurements showed that bone levels of mesial and distal sites in the DOX group were significantly higher than those in the HA group. CONCLUSIONS The present results indicating that the DOX-treated HA implant surface attenuates the progression of peri-implantitis.
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Affiliation(s)
- Lin Ding
- Foshan Stomatology Hospital, School of Stomatology and Medicine, Foshan University, Foshan, People's Republic of China
| | - Peng Zhang
- Department of Oral Implantology and Regenerative Dental Medicine, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Xin Wang
- VIP Clinic, Beijing Stomatological Hospital, Capital Medical University, Beijing, People's Republic of China
| | - Shohei Kasugai
- Department of Oral Implantology and Regenerative Dental Medicine, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
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