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Kai KC, Borges R, Pedroni ACF, Pelosine AM, da Cunha MR, Marques MM, de Araújo DR, Marchi J. Tricalcium phosphate-loaded injectable hydrogel as a promising osteogenic and bactericidal teicoplanin-delivery system for osteomyelitis treatment: An in vitro and in vivo investigation. BIOMATERIALS ADVANCES 2024; 164:213966. [PMID: 39094443 DOI: 10.1016/j.bioadv.2024.213966] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2024] [Revised: 06/25/2024] [Accepted: 07/21/2024] [Indexed: 08/04/2024]
Abstract
Osteomyelitis is an inflammation of bone tissue usually caused by pyogenic bacteria. The most recurrent clinical approach consists of bone debridement followed by parenteral administration of antibiotics. However, systemic antibiotic treatment has limitations regarding absorption rate and bioavailability over time. The main challenge of osteomyelitis treatment consists of coupling the persistent infection treatment with the regeneration of the bone debrided. In this work, we developed an injectable drug delivery system based on poloxamer 407 hydrogel containing undoped Mg, Zn-doped tricalcium phosphate (β-TCP), and teicoplanin, a broad-spectrum antibiotic. We evaluated how the addition of teicoplanin and β-TCP affected the micellization, gelation, particle size, and surface charge of the hydrogel. Later, we studied the hydrogel degradation and drug delivery kinetics. Finally, the bactericidal, biocompatibility, and osteogenic properties were evaluated through in vitro studies and confirmed by in vivo Wistar rat models. Teicoplanin was found to be encapsulated in the corona portions of the hydrogel micelles, yielding a bigger hydrodynamics radius. The encapsulated teicoplanin showed a sustained release over the evaluated period, enough to trigger antibacterial properties against Gram-positive bacteria. Besides, the formulations were biocompatible and showed bone healing ability and osteogenic properties. Finally, in vivo studies confirmed that the proposed locally injected formulations yielded osteomyelitis treatment with superior outcomes than parenteral administration while promoting bone regeneration. In conclusion, the presented formulations are promising drug delivery systems for osteomyelitis treatment and deserve further technological improvements.
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Affiliation(s)
- Karen Cristina Kai
- Centro de Ciências Naturais e Humanas (CCNH), Universidade Federal do ABC (UFABC), Campus Santo André, SP, Brazil; Department of Morphology and Pathology, Jundiai Medical School, Jundiai, Brazil
| | - Roger Borges
- School of Biomedical Engineering, Faculdade Israelita de Ciências da Saúde Albert Einstein, Hospital Israelita Albert Einstein, São Paulo, SP, Brazil.
| | | | - Agatha Maria Pelosine
- Centro de Ciências Naturais e Humanas (CCNH), Universidade Federal do ABC (UFABC), Campus Santo André, SP, Brazil.
| | - Marcelo Rodrigues da Cunha
- Department of Morphology and Pathology, Jundiai Medical School, Jundiai, Brazil; Interunits Graduate Program in Bioengineering (EESC/FMRP/IQSC), University of Sao Paulo (USP), Sao Carlos, Brazil
| | - Marcia Martins Marques
- Faculdade de Odontologia, Universidade de São Paulo, São Paulo, SP, Brazil; Postgraduation Program in Dentistry, Ibirapuera University, São Paulo, Brazil.
| | - Daniele Ribeiro de Araújo
- Centro de Ciências Naturais e Humanas (CCNH), Universidade Federal do ABC (UFABC), Campus Santo André, SP, Brazil.
| | - Juliana Marchi
- Centro de Ciências Naturais e Humanas (CCNH), Universidade Federal do ABC (UFABC), Campus Santo André, SP 09210-180, Brazil..
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2
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Wu L, Wu X, Wu L, Chen D, Zhang T, Zheng H, Xiao X. Polydopamine-Modified Titanium Dioxide Nanotube Arrays Doped with Calcium as a Sustained Drug Delivery System. ACS OMEGA 2024; 9:4949-4956. [PMID: 38313478 PMCID: PMC10831826 DOI: 10.1021/acsomega.3c08772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/04/2023] [Revised: 12/19/2023] [Accepted: 01/08/2024] [Indexed: 02/06/2024]
Abstract
Titanium nanotube (TNT) arrays manufactured via electrochemical anodization have been widely used as local drug carriers due to their excellent biocompatibility and customizable nanotubular structures. However, the uncontrollable and abrupt drug release at the early stage decreases the drug release duration, leading to excessive drug concentration at the implantation site. In this study, a continuous drug delivery system based on TNTs was created. Initially, a basic ultrasound-assisted approach was utilized to deposit a polydopamine (PDA) coating onto TNTs to obtain PDA-modified TNTs. Next, TNTs-PDA were submerged in a calcium chloride solution to include Ca2+ through Ca2+ coordination between the PDA layer's catechol groups. Sodium alendronate (NaAL) was used as a model drug and loaded onto TNTs-PDA-Ca2+ by immersing them in an NaAL solution. In the final step, NaAL was covalently attached to TNTs-PDA-Ca2+ through coordination bonds with Ca2+. The samples underwent characterization through the use of various techniques, including field emission scanning electron microscopy, Fourier-transform infrared spectroscopy, X-ray diffraction patterning, X-ray photoelectron spectroscopy, and inductively coupled plasma emission spectrometry. The results indicated that the bioactivity of TNTs improved, and there was an enhancement in drug loading capacity and release performance due to modification with PDA and Ca2+. Furthermore, acidic conditions can cause significant drug release due to the cleavage of coordination bonds between the drug and Ca2+ ions. Thus, the aforementioned drug delivery system represents a potentially promising approach for achieving sustained and controllable drug release.
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Affiliation(s)
- Lizhong Wu
- Department
of Orthopedics, Fuzhou Second Hospital, Fuzhou, Fujian 350007, China
| | - Xing Wu
- Department
of Orthopedics, Fuzhou Second Hospital, Fuzhou, Fujian 350007, China
| | - Linzhao Wu
- Department
of Orthopedics, Fuzhou Second Hospital, Fuzhou, Fujian 350007, China
| | - Dongdong Chen
- Department
of Orthopedics, Fuzhou Second Hospital, Fuzhou, Fujian 350007, China
| | - Tao Zhang
- Department
of Orthopedics, Fuzhou Second Hospital, Fuzhou, Fujian 350007, China
| | - Hong Zheng
- Department
of Orthopedics, Fuzhou Second Hospital, Fuzhou, Fujian 350007, China
| | - Xiufeng Xiao
- Fujian
Provincial Key Laboratory of Advanced Materials Oriented Chemical
Engineering, College of Chemistry and Material Science, Fujian Normal University, Fuzhou, Fujian 350007, China
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3
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Thi HN, Ngoc SN, Minh TV, Van QL, Bui VTD, Nguyen NH. A heparin-based nanogel system for redox and pH dual-responsive delivery of cisplatin. Biomed Mater 2024; 19:025012. [PMID: 38215488 DOI: 10.1088/1748-605x/ad1dfb] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2023] [Accepted: 01/12/2024] [Indexed: 01/14/2024]
Abstract
Heparin recently has been discovered as a novel anti-cancer agent. The combinations of heparin with other agents was reported not only to reduce the undesired effects of free heparin and increase the cellular uptake of the delivered molecules, but also is the basis for the design and development of multi-stimulation response systems to improve their killing cancer cell efficiency at the target positions. This study aimed to design a redox and pH dual-responsive anticancer system based on heparin for cisplatin (CPT) therapy. Heparin was first cross-linked with Poloxamer 407 chains via disulfide bridges to form a redox-sensitive system Hep-P407. CPT was then encapsulated into the Hep-P407 system via the complex of Platin and carboxyl groups to form the redox/pH-responsive system CPT@Hep-P407. The obtained Hep-P407 systems were proved and characterized using specific techniques including1H-NMR, zeta potential, Dynamic Light Scattering (DLS) and Fourier-transform infrared spectroscopy. The dual-responsive behavior to redox and pH of CPT@Hep-P407 was proved through DLS, zeta andin vitrorelease analysis meanwhile its cytotoxicity was investigated using Resazurin assay. The CPT@Hep-P407 system is expected to be a promising redox/pH-responsive anticancer system based on heparin for CPT therapy.
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Affiliation(s)
- Huong Nguyen Thi
- Institute of Chemistry and Materials, Academy of Military Science and Technology (Vietnam), 17 Hoang Sam, Cau Giay, Hanoi 100000, Vietnam
| | - Son Nguyen Ngoc
- Institute of Chemistry and Materials, Academy of Military Science and Technology (Vietnam), 17 Hoang Sam, Cau Giay, Hanoi 100000, Vietnam
| | - Thanh Vu Minh
- Institute of Chemistry and Materials, Academy of Military Science and Technology (Vietnam), 17 Hoang Sam, Cau Giay, Hanoi 100000, Vietnam
| | - Quan Le Van
- Functional Diagnostics Department, Military Hospital 103, Vietnam Military Medical University, Phung Hung, Ha Dong, Hanoi 100000, Vietnam
| | - Vu Thuy Duong Bui
- Institute of Chemical Technology, Vietnam Academy of Science and Technology, 1A TL29, Thanh Loc Ward, District 12, Ho Chi Minh City 700000, Vietnam
| | - Ngoc Hoi Nguyen
- Institute of Chemical Technology, Vietnam Academy of Science and Technology, 1A TL29, Thanh Loc Ward, District 12, Ho Chi Minh City 700000, Vietnam
- Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay District, Hanoi 100000, Vietnam
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4
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Moradi MR, Salahinejad E, Sharifi E, Tayebi L. Controlled drug delivery from chitosan-coated heparin-loaded nanopores anodically grown on nitinol shape-memory alloy. Carbohydr Polym 2023; 314:120961. [PMID: 37173015 PMCID: PMC10585653 DOI: 10.1016/j.carbpol.2023.120961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2023] [Revised: 04/12/2023] [Accepted: 04/24/2023] [Indexed: 05/15/2023]
Abstract
Nitinol (NiTi shape-memory alloy) is an interesting candidate in various medical applications like dental, orthopedic, and cardiovascular devices, owing to its unique mechanical behaviors and proper biocompatibility. The aim of this work is the local controlled delivery of a cardiovascular drug, heparin, loaded onto nitinol treated by electrochemical anodizing and chitosan coating. In this regard, the structure, wettability, drug release kinetics, and cell cytocompatibility of the specimens were analyzed in vitro. The two-stage anodizing process successfully developed a regular nanoporous layer of Ni-Ti-O on nitinol, which considerably decreased the sessile water contact angle and induced hydrophilicity. The application of the chitosan coatings controlled the release of heparin mainly by a diffusional mechanism, where the drug release mechanisms were evaluated by the Higuchi, first-order, zero-order, and Korsmeyer-Pepass models. Human umbilical cord endothelial cells (HUVECs) viability assay also showed the non-cytotoxicity of the samples, so that the best performance was found for the chitosan-coated samples. It is concluded that the designed drug delivery systems are promising for cardiovascular, particularly stent applications.
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Affiliation(s)
- M R Moradi
- Faculty of Materials Science and Engineering, K. N. Toosi University of Technology, Tehran, Iran
| | - E Salahinejad
- Faculty of Materials Science and Engineering, K. N. Toosi University of Technology, Tehran, Iran.
| | - E Sharifi
- Department of Tissue Engineering and Biomaterials, School of Advanced Medical Sciences and Technologies, Hamadan University of Medical Sciences, Hamadan, Iran
| | - L Tayebi
- Marquette University School of Dentistry, Milwaukee, WI 53233, USA
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Titania nanotube arrays as nanobiomatrix interfaces for localized biomolecules delivery to human neuroblastoma SH-SY5Y cells. INTERNATIONAL NANO LETTERS 2022. [DOI: 10.1007/s40089-022-00389-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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6
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Lv B, Wu J, Xiong Y, Xie X, Lin Z, Mi B, Liu G. Functionalized multidimensional biomaterials for bone microenvironment engineering applications: Focus on osteoimmunomodulation. Front Bioeng Biotechnol 2022; 10:1023231. [PMID: 36406210 PMCID: PMC9672076 DOI: 10.3389/fbioe.2022.1023231] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Accepted: 10/20/2022] [Indexed: 09/26/2023] Open
Abstract
As bone biology develops, it is gradually recognized that bone regeneration is a pathophysiological process that requires the simultaneous participation of multiple systems. With the introduction of osteoimmunology, the interplay between the immune system and the musculoskeletal diseases has been the conceptual framework for a thorough understanding of both systems and the advancement of osteoimmunomodulaty biomaterials. Various therapeutic strategies which include intervention of the surface characteristics or the local delivery systems with the incorporation of bioactive molecules have been applied to create an ideal bone microenvironment for bone tissue regeneration. Our review systematically summarized the current research that is being undertaken in the field of osteoimmunomodulaty bone biomaterials on a case-by-case basis, aiming to inspire more extensive research and promote clinical conversion.
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Affiliation(s)
| | | | | | | | | | - Bobin Mi
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Guohui Liu
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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Noreen S, Wang E, Feng H, Li Z. Functionalization of TiO 2 for Better Performance as Orthopedic Implants. MATERIALS (BASEL, SWITZERLAND) 2022; 15:6868. [PMID: 36234208 PMCID: PMC9573462 DOI: 10.3390/ma15196868] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 09/23/2022] [Accepted: 09/27/2022] [Indexed: 06/16/2023]
Abstract
This review mainly focuses on the surface functionalization approaches of titanium dioxide (TiO2) to prevent bacterial infections and facilitate osteointegration simultaneously for titanium (Ti)-based orthopedic implants. Infection is one of the major causes of implant failure. Meanwhile, it is also critical for the bone-forming cells to integrate with the implant surface. TiO2 is the native oxide layer of Ti which has good biocompatibility as well as enriched physical, chemical, electronic, and photocatalytic properties. The formed nanostructures during fabrication and the enriched properties of TiO2 have enabled various functionalization methods to combat the micro-organisms and enhance the osteogenesis of Ti implants. This review encompasses the various modifications of TiO2 in aspects of topology, drug loading, and element incorporation, as well as the most recently developed electron transfer and electrical tuning approaches. Taken together, these approaches can endow Ti implants with better bactericidal and osteogenic abilities via the functionalization of TiO2.
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Affiliation(s)
| | | | | | - Zhou Li
- Correspondence: (H.F.); (Z.L.)
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8
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Liu S, Chen X, Yu M, Li J, Liu J, Xie Z, Gao F, Liu Y. Applications of Titanium Dioxide Nanostructure in Stomatology. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27123881. [PMID: 35745007 PMCID: PMC9229536 DOI: 10.3390/molecules27123881] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/14/2022] [Revised: 06/09/2022] [Accepted: 06/14/2022] [Indexed: 11/16/2022]
Abstract
Breakthroughs in the field of nanotechnology, especially in nanochemistry and nanofabrication technologies, have been attracting much attention, and various nanomaterials have recently been developed for biomedical applications. Among these nanomaterials, nanoscale titanium dioxide (nano-TiO2) has been widely valued in stomatology due to the fact of its excellent biocompatibility, antibacterial activity, and photocatalytic activity as well as its potential use for applications such as dental implant surface modification, tissue engineering and regenerative medicine, drug delivery carrier, dental material additives, and oral tumor diagnosis and treatment. However, the biosafety of nano-TiO2 is controversial and has become a key constraint in the development of nano-TiO2 applications in stomatology. Therefore, in this review, we summarize recent research regarding the applications of nano-TiO2 in stomatology, with an emphasis on its performance characteristics in different fields, and evaluations of the biological security of nano-TiO2 applications. In addition, we discuss the challenges, prospects, and future research directions regarding applications of nano-TiO2 in stomatology that are significant and worthy of further exploration.
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Affiliation(s)
- Shuang Liu
- Department of Endodontics, Hospital of Stomatology, Jilin University, Changchun 130000, China; (S.L.); (X.C.); (M.Y.); (J.L.); (J.L.); (Z.X.)
| | - Xingzhu Chen
- Department of Endodontics, Hospital of Stomatology, Jilin University, Changchun 130000, China; (S.L.); (X.C.); (M.Y.); (J.L.); (J.L.); (Z.X.)
| | - Mingyue Yu
- Department of Endodontics, Hospital of Stomatology, Jilin University, Changchun 130000, China; (S.L.); (X.C.); (M.Y.); (J.L.); (J.L.); (Z.X.)
| | - Jianing Li
- Department of Endodontics, Hospital of Stomatology, Jilin University, Changchun 130000, China; (S.L.); (X.C.); (M.Y.); (J.L.); (J.L.); (Z.X.)
| | - Jinyao Liu
- Department of Endodontics, Hospital of Stomatology, Jilin University, Changchun 130000, China; (S.L.); (X.C.); (M.Y.); (J.L.); (J.L.); (Z.X.)
| | - Zunxuan Xie
- Department of Endodontics, Hospital of Stomatology, Jilin University, Changchun 130000, China; (S.L.); (X.C.); (M.Y.); (J.L.); (J.L.); (Z.X.)
| | - Fengxiang Gao
- Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130000, China
- Correspondence: (F.G.); (Y.L.); Tel.: +86-13756189633 (F.G.); +86-13756466950 (Y.L.)
| | - Yuyan Liu
- Department of Endodontics, Hospital of Stomatology, Jilin University, Changchun 130000, China; (S.L.); (X.C.); (M.Y.); (J.L.); (J.L.); (Z.X.)
- Correspondence: (F.G.); (Y.L.); Tel.: +86-13756189633 (F.G.); +86-13756466950 (Y.L.)
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9
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Mazare A. Comment on "Old is Gold: Electrolyte Aging Influences the Topography, Chemistry, and Bioactivity of Anodized TiO 2 Nanopores". ACS APPLIED MATERIALS & INTERFACES 2022; 14:14837-14841. [PMID: 35343226 DOI: 10.1021/acsami.1c18860] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Self-organized anodic TiO2 nanostructures, in the form of nanopores, nanotubes, mesosponge, etc., obtained by electrochemical anodization have in the past two decades attracted tremendous focus and the number of publications based on such structures for various applications is remarkable. Guo et al. in ACS Appl. Mater. Interfaces 2021, 13 (7), 7897-7912 discuss the obtaining of TiO2 nanopores by anodization in an aged electrolyte and its influence on the nanopores' topography, chemistry, and bioactivity. Guo et al. do not include in their study sufficient SEM characterization to confirm the claimed nanopore morphology. This comment clarifies the difference between a nanotube and a nanopore structure, both by already existing literature and reproduced experimental results. In fact, anodization on similar substrates and in similar anodization conditions leads to a nanotube morphology covered at the top by an initiation layer, depending on the anodization duration and post-treatments, such as ultrasonication. It is noted that the type of nanostructure has a clear influence on the available inner surface area for porosity computation or biomedical applications, for example, targeting drug delivery and interactions with proteins. Here, a clearer classification into nanopores and nanotubes─with an open top or an initiation layer─is established and explained.
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Affiliation(s)
- Anca Mazare
- Friedrich-Alexander University, Department of Materials Science WW4-LKO, Erlangen 91058, Germany
- Advanced Institute for Materials Research (AIMR), National University Corporation Tohoku University (TU), Sendai 980-8577, Japan
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10
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Accioni F, Vázquez J, Merinero M, Begines B, Alcudia A. Latest Trends in Surface Modification for Dental Implantology: Innovative Developments and Analytical Applications. Pharmaceutics 2022; 14:455. [PMID: 35214186 PMCID: PMC8876580 DOI: 10.3390/pharmaceutics14020455] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Revised: 02/15/2022] [Accepted: 02/18/2022] [Indexed: 12/27/2022] Open
Abstract
An increase in the world population and its life expectancy, as well as the ongoing concern about our physical appearance, have elevated the relevance of dental implantology in recent decades. Engineering strategies to improve the survival rate of dental implants have been widely investigated, focusing on implant material composition, geometry (usually guided to reduce stiffness), and interface surrounding tissues. Although efforts to develop different implant surface modifications are being applied in commercial dental prostheses today, the inclusion of surface coatings has gained special interest, as they can be tailored to efficiently enhance osseointegration, as well as to reduce bacterial-related infection, minimizing peri-implantitis appearance and its associated risks. The use of biomaterials to replace teeth has highlighted the need for the development of reliable analytical methods to assess the therapeutic benefits of implants. This literature review considers the state-of-the-art strategies for surface modification or coating and analytical methodologies for increasing the survival rate for teeth restoration.
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Affiliation(s)
- Francesca Accioni
- Departamento de Química Orgánica y Farmacéutica, Universidad de Sevilla, 41012 Seville, Spain; (F.A.); (M.M.)
| | - Juan Vázquez
- Departamento de Química Orgánica, Universidad de Sevilla, 41012 Seville, Spain;
| | - Manuel Merinero
- Departamento de Química Orgánica y Farmacéutica, Universidad de Sevilla, 41012 Seville, Spain; (F.A.); (M.M.)
- Departamento de Citología e Histología Normal y Patológica, Universidad de Sevilla, 41012 Seville, Spain
| | - Belén Begines
- Departamento de Química Orgánica y Farmacéutica, Universidad de Sevilla, 41012 Seville, Spain; (F.A.); (M.M.)
| | - Ana Alcudia
- Departamento de Química Orgánica y Farmacéutica, Universidad de Sevilla, 41012 Seville, Spain; (F.A.); (M.M.)
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11
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Zhang Y, Gulati K, Li Z, Di P, Liu Y. Dental Implant Nano-Engineering: Advances, Limitations and Future Directions. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:2489. [PMID: 34684930 PMCID: PMC8538755 DOI: 10.3390/nano11102489] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Revised: 09/08/2021] [Accepted: 09/18/2021] [Indexed: 12/27/2022]
Abstract
Titanium (Ti) and its alloys offer favorable biocompatibility, mechanical properties and corrosion resistance, which makes them an ideal material choice for dental implants. However, the long-term success of Ti-based dental implants may be challenged due to implant-related infections and inadequate osseointegration. With the development of nanotechnology, nanoscale modifications and the application of nanomaterials have become key areas of focus for research on dental implants. Surface modifications and the use of various coatings, as well as the development of the controlled release of antibiotics or proteins, have improved the osseointegration and soft-tissue integration of dental implants, as well as their antibacterial and immunomodulatory functions. This review introduces recent nano-engineering technologies and materials used in topographical modifications and surface coatings of Ti-based dental implants. These advances are discussed and detailed, including an evaluation of the evidence of their biocompatibility, toxicity, antimicrobial activities and in-vivo performances. The comparison between these attempts at nano-engineering reveals that there are still research gaps that must be addressed towards their clinical translation. For instance, customized three-dimensional printing technology and stimuli-responsive, multi-functional and time-programmable implant surfaces holds great promise to advance this field. Furthermore, long-term in vivo studies under physiological conditions are required to ensure the clinical application of nanomaterial-modified dental implants.
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Affiliation(s)
- Yifan Zhang
- Department of Oral Implantology, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China;
| | - Karan Gulati
- School of Dentistry, The University of Queensland, Herston, QLD 4006, Australia;
| | - Ze Li
- School of Stomatology, Chongqing Medical University, Chongqing 400016, China;
| | - Ping Di
- School of Dentistry, The University of Queensland, Herston, QLD 4006, Australia;
| | - Yan Liu
- Laboratory of Biomimetic Nanomaterials, Department of Orthodontics, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
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12
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Anodic TiO 2 Nanotubes: Tailoring Osteoinduction via Drug Delivery. NANOMATERIALS 2021; 11:nano11092359. [PMID: 34578675 PMCID: PMC8466263 DOI: 10.3390/nano11092359] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 09/06/2021] [Accepted: 09/08/2021] [Indexed: 02/07/2023]
Abstract
TiO2 nanostructures and more specifically nanotubes have gained significant attention in biomedical applications, due to their controlled nanoscale topography in the sub-100 nm range, high surface area, chemical resistance, and biocompatibility. Here we review the crucial aspects related to morphology and properties of TiO2 nanotubes obtained by electrochemical anodization of titanium for the biomedical field. Following the discussion of TiO2 nanotopographical characterization, the advantages of anodic TiO2 nanotubes will be introduced, such as their high surface area controlled by the morphological parameters (diameter and length), which provides better adsorption/linkage of bioactive molecules. We further discuss the key interactions with bone-related cells including osteoblast and stem cells in in vitro cell culture conditions, thus evaluating the cell response on various nanotubular structures. In addition, the synergistic effects of electrical stimulation on cells for enhancing bone formation combining with the nanoscale environmental cues from nanotopography will be further discussed. The present review also overviews the current state of drug delivery applications using TiO2 nanotubes for increased osseointegration and discusses the advantages, drawbacks, and prospects of drug delivery applications via these anodic TiO2 nanotubes.
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Senapati S, Darling RJ, Ross KA, Wannemeuhler MJ, Narasimhan B, Mallapragada SK. Self-assembling synthetic nanoadjuvant scaffolds cross-link B cell receptors and represent new platform technology for therapeutic antibody production. SCIENCE ADVANCES 2021; 7:eabj1691. [PMID: 34348905 PMCID: PMC8336949 DOI: 10.1126/sciadv.abj1691] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/24/2021] [Accepted: 06/17/2021] [Indexed: 06/13/2023]
Abstract
Host antibody responses are pivotal for providing protection against infectious agents. We have pioneered a new class of self-assembling micelles based on pentablock copolymers that enhance antibody responses while providing a low inflammatory environment compared to traditional adjuvants. This type of "just-right" immune response is critical in the rational design of vaccines for older adults. Here, we report on the mechanism of enhancement of antibody responses by pentablock copolymer micelles, which act as scaffolds for antigen presentation to B cells and cross-link B cell receptors, unlike other micelle-forming synthetic block copolymers. We exploited this unique mechanism and developed these scaffolds as a platform technology to produce antibodies in vitro. We show that this novel approach can be used to generate laboratory-scale quantities of therapeutic antibodies against multiple antigens, including those associated with SARS-CoV-2 and Yersinia pestis, further expanding the value of these nanomaterials to rapidly develop countermeasures against infectious diseases.
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Affiliation(s)
- Sujata Senapati
- Department of Chemical and Biological Engineering, Iowa State University, Ames, IA, USA
| | - Ross J Darling
- Department of Veterinary Microbiology and Preventive Medicine, Iowa State University, Ames, IA, USA
| | - Kathleen A Ross
- Department of Chemical and Biological Engineering, Iowa State University, Ames, IA, USA
- Nanovaccine Institute, Iowa State University, Ames, IA, USA
| | - Michael J Wannemeuhler
- Department of Veterinary Microbiology and Preventive Medicine, Iowa State University, Ames, IA, USA
- Nanovaccine Institute, Iowa State University, Ames, IA, USA
| | - Balaji Narasimhan
- Department of Chemical and Biological Engineering, Iowa State University, Ames, IA, USA.
- Nanovaccine Institute, Iowa State University, Ames, IA, USA
| | - Surya K Mallapragada
- Department of Chemical and Biological Engineering, Iowa State University, Ames, IA, USA.
- Nanovaccine Institute, Iowa State University, Ames, IA, USA
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14
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Gulati K, Zhang Y, Di P, Liu Y, Ivanovski S. Research to Clinics: Clinical Translation Considerations for Anodized Nano-Engineered Titanium Implants. ACS Biomater Sci Eng 2021; 8:4077-4091. [PMID: 34313123 DOI: 10.1021/acsbiomaterials.1c00529] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Titania nanotubes (TNTs) fabricated on titanium orthopedic and dental implants have shown significant potential in "proof of concept" in vitro, ex vivo, and short-term in vivo studies. However, most studies do not focus on a clear direction for future research towards clinical translation, and there exists a knowledge gap in identifying key research challenges that must be addressed to progress to the clinical setting. This review focuses on such challenges with respect to anodized titanium implants modified with TNTs, including optimized fabrication on clinically utilized microrough surfaces, clinically relevant bioactivity assessments, and controlled/tailored local release of therapeutics. Further, long-term in vivo investigations in compromised animal models under loading conditions are needed. We also discuss and detail challenges and progress related to the mechanical stability of TNT-based implants, corrosion resistance/electrochemical stability, optimized cleaning/sterilization, packaging/aging, and nanotoxicity concerns. This extensive, clinical translation focused review of TNTs modified Ti implants aims to foster improved understanding of key research gaps and advances, informing future research in this domain.
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Affiliation(s)
- Karan Gulati
- The University of Queensland, School of Dentistry, Herston, Queensland 4006, Australia
| | - Yifan Zhang
- Department of Oral Implantology, Peking University School and Hospital of Stomatology and National Clinical Research Centre for Oral Diseases and National Engineering Laboratory for Digital and Material Technology of Stomatology and Beijing Key Laboratory of Digital Stomatology, Beijing, China
| | - Ping Di
- Department of Oral Implantology, Peking University School and Hospital of Stomatology and National Clinical Research Centre for Oral Diseases and National Engineering Laboratory for Digital and Material Technology of Stomatology and Beijing Key Laboratory of Digital Stomatology, Beijing, China
| | - Yan Liu
- Laboratory of Biomimetic Nanomaterials, Department of Orthodontics, Peking University School and Hospital of Stomatology, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Beijing, China
| | - Sašo Ivanovski
- The University of Queensland, School of Dentistry, Herston, Queensland 4006, Australia
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15
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Strimaite M, Harman CLG, Duan H, Wang Y, Davies GL, Williams GR. Layered terbium hydroxides for simultaneous drug delivery and imaging. Dalton Trans 2021; 50:10275-10290. [PMID: 34254077 DOI: 10.1039/d1dt01251g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Layered rare-earth hydroxides have begun to gather increasing attention as potential theranostic platforms owing to their extensive intercalation chemistry combined with magnetic and fluorescent properties. In this work, the potential of layered terbium hydroxide (LTbH) as a platform for simultaneous drug delivery and fluorescence imaging was evaluated. LTbH-Cl ([Tb2(OH)5]Cl·yH2O) was loaded with three nonsteroidal anti-inflammatory drugs (diclofenac, ibuprofen, and naproxen) via ion-exchange. Drug release studies in phosphate buffered saline (pH = 7.4) revealed all three formulations release their drug cargo rapidly over the course of approximately 5 hours. In addition, solid state fluorescence studies indicated that fluorescence intensity is strongly dependent on the identity of the guest anion. It was postulated that this feature may be used to track the extent of drug release from the formulation, which was subsequently successfully demonstrated for the ibuprofen loaded LTbH. Overall, LTbH exhibits good biocompatibility, high drug loading, and a strong, guest-dependent fluorescence signal, all of which are desirable qualities for theranostic applications.
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Affiliation(s)
- Margarita Strimaite
- UCL School of Pharmacy, University College London, 29-39 Brunswick Square, London, WC1N 1AX, UK.
| | - Clarissa L G Harman
- UCL School of Pharmacy, University College London, 29-39 Brunswick Square, London, WC1N 1AX, UK.
| | - Huan Duan
- UCL School of Pharmacy, University College London, 29-39 Brunswick Square, London, WC1N 1AX, UK.
| | - Yuwei Wang
- UCL School of Pharmacy, University College London, 29-39 Brunswick Square, London, WC1N 1AX, UK.
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, P.O. Box 98, Beijing, 100029, PR China
| | - Gemma-Louise Davies
- Department of Chemistry, University College London, 20 Gordon St, Bloomsbury, London, WC1H 0AJ, UK
| | - Gareth R Williams
- UCL School of Pharmacy, University College London, 29-39 Brunswick Square, London, WC1N 1AX, UK.
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16
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Understanding and optimizing the antibacterial functions of anodized nano-engineered titanium implants. Acta Biomater 2021; 127:80-101. [PMID: 33744499 DOI: 10.1016/j.actbio.2021.03.027] [Citation(s) in RCA: 47] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Revised: 03/07/2021] [Accepted: 03/10/2021] [Indexed: 12/15/2022]
Abstract
Nanoscale surface modification of titanium-based orthopaedic and dental implants is routinely applied to augment bioactivity, however, as is the case with other cells, bacterial adhesion is increased on nano-rough surfaces. Electrochemically anodized Ti implants with titania nanotubes (TNTs) have been proposed as an ideal implant surface with desirable bioactivity and local drug release functions to target various conditions. However, a comprehensive state of the art overview of why and how such TNTs-Ti implants acquire antibacterial functions, and an in-depth knowledge of how topography, chemistry and local elution of potent antibiotic agents influence such functions has not been reported. This review discusses and details the application of nano-engineered Ti implants modified with TNTs for maximum local antibacterial functions, deciphering the interdependence of various characteristics and the fine-tuning of different parameters to minimize cytotoxicity. An ideal implant surface should cater simultaneously to ossoeintegration (and soft-tissue integration for dental implants), immunomodulation and antibacterial functions. We also evaluate the effectiveness and challenges associated with such synergistic functions from modified TNTs-implants. Particular focus is placed on the metallic and semi-metallic modification of TNTs towards enabling bactericidal properties, which is often dose dependent. Additionally, there are concerns over the cytotoxicity of these therapies. In that light, research challenges in this domain and expectations from the next generation of customizable antibacterial TNTs implants towards clinical translation are critically evaluated. STATEMENT OF SIGNIFICANCE: One of the major causes of titanium orthopaedic/dental implant failure is bacterial colonization and infection, which results in complete implant failure and the need for revision surgery and re-implantation. Using advanced nanotechnology, controlled nanotopographies have been fabricated on Ti implants, for instance anodized nanotubes, which can accommodate and locally elute potent antibiotic agents. In this pioneering review, we shine light on the topographical, chemical and therapeutic aspects of antibacterial nanotubes towards achieving desirable tailored antibacterial efficacy without cytotoxicity concerns. This interdisciplinary review will appeal to researchers from the wider scientific community interested in biomaterials science, structure and function, and will provide an improved understanding of controlling bacterial infection around nano-engineered implants, aimed at bridging the gap between research and clinics.
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Jayasree A, Ivanovski S, Gulati K. ON or OFF: Triggered therapies from anodized nano-engineered titanium implants. J Control Release 2021; 333:521-535. [DOI: 10.1016/j.jconrel.2021.03.020] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 03/18/2021] [Accepted: 03/19/2021] [Indexed: 12/13/2022]
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18
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Orchestrating soft tissue integration at the transmucosal region of titanium implants. Acta Biomater 2021; 124:33-49. [PMID: 33444803 DOI: 10.1016/j.actbio.2021.01.001] [Citation(s) in RCA: 61] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Revised: 01/03/2021] [Accepted: 01/05/2021] [Indexed: 12/20/2022]
Abstract
Osseointegration at the bone-implant interface and soft tissue integration (STI) at the trans-mucosal region are crucial for the long-term success of dental implants, especially in compromised patient conditions. The STI quality of conventional smooth and bio-inert titanium-based implants is inferior to that of natural tissue (i.e. teeth), and hence various surface modifications have been suggested. This review article compares and contrasts the various modification strategies (physical, chemical and biological) utilized to enhance STI of Ti implants. It also details the STI challenges associated with conventional Ti-based implants, current surface modification strategies and cutting-edge nano-engineering solutions. The topographical, biological and therapeutic advances achievable via electrochemically anodized Ti implants with TiO2 nanotubes/nanopores are highlighted. Finally, the status and future directions of such nano-engineered implants is discussed, with emphasis on bridging the gap between research and clinical translation.
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Micheletti C, Suriano R, Grandfield K, Turri S. Drug release from polymer-coated TiO2 nanotubes on additively manufactured Ti-6Al-4V bone implants: a feasibility study. NANO EXPRESS 2021. [DOI: 10.1088/2632-959x/abe278] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Abstract
Insufficient osseointegration, inflammatory response and bacterial infection are responsible for the majority of bone implant failures. Drug-releasing implants subjected to adequate surface modification can concurrently address these challenges to improve the success of implant surgeries. This work investigates the use of Ti-6Al-4V (Ti64) with a dual-scale surface topography as a platform for local drug delivery. Dual-scale topography was obtained combining the inherent microscale roughness of the Ti64 samples manufactured by selective laser melting (SLM) with the nanoscale roughness of TiO2 nanotubes (TNTs) obtained by subsequent electrochemical anodization at 60 V for 30 min. TNTs were loaded with a solution of penicillin-streptomycin, a common antibiotic, and drug release was tested in vitro. Three biocompatible and biodegradable polymers, i.e. chitosan, poly(ε-caprolactone) and poly(3-hydroxybutyrate), were deposited by spin coating, while preserving the microscale topography of the substrate underneath. The presence of polymer coatings overall modified the drug release pattern, as revealed by fitting of the experimental data with a power-law model. A slight extension in the overall duration of drug release (about 17% for a single layer and 33% for two layers of PCL and PHB) and reduced burst release was observed for all polymer-coated samples compared to uncoated, especially when two layers of coatings were applied.
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Development of a Surface-Functionalized Titanium Implant for Promoting Osseointegration: Surface Characteristics, Hemocompatibility, and In Vivo Evaluation. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10238582] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
This study aimed to evaluate the impact of surface-modified biomedical titanium (Ti) dental implant on osseointegration. The surfaces were modified using an innovative dip-coating technique (IDCT; sandblasted, large-grit, and acid-etched, then followed by coating with the modified pluronic F127 biodegradable polymer). The surface morphology and hemocompatibility evaluations were investigated by field-emission scanning electron microscopy, while the contact analysis was observed by goniometer. The IDCT-modified Ti implant was also implanted in patients with missing teeth by single-stage surgical procedure then observed immediately and again four months after placement by cone-beam computerized tomography (CBCT) imaging. It was found that the IDCT-modified Ti implant was rougher than the dental implant without surface modification. Contact angle analysis showed the IDCT-modified Ti implant was lower than the dental implant without surface modification. The hemocompatibility evaluations showed greater red blood cell aggregation and fibrin filament formation on the IDCT-modified Ti implant. The radiographic and CBCT image displayed new bone formation at four months after the IDCT-modified Ti implant placement. Therefore, this study suggests that the IDCT-modified Ti dental implant has great potential to accelerate osseointegration.
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21
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Davoodian F, Salahinejad E, Sharifi E, Barabadi Z, Tayebi L. PLGA-coated drug-loaded nanotubes anodically grown on nitinol. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 116:111174. [DOI: 10.1016/j.msec.2020.111174] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 05/29/2020] [Accepted: 06/07/2020] [Indexed: 12/12/2022]
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Keceli HG, Bayram C, Celik E, Ercan N, Demirbilek M, Nohutcu RM. Dual delivery of platelet-derived growth factor and bone morphogenetic factor-6 on titanium surface to enhance the early period of implant osseointegration. J Periodontal Res 2020; 55:694-704. [PMID: 32776328 DOI: 10.1111/jre.12756] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Revised: 04/01/2020] [Accepted: 04/06/2020] [Indexed: 01/12/2023]
Abstract
OBJECTIVE To test the surface properties and in vitro effects of a new sequential release system on MC3T3-E1 cells for improved osseointegration. BACKGROUND BMP6-loaded anodized titanium coated with PDGF containing silk fibroin (SF) may improve osseointegration. METHODS Titanium surfaces were electrochemically anodized, and SF layer was covered via electrospinning. Five experimental groups (unanodized Ti (Ti), anodized Ti (AnTi), anodized + BMP6-loaded Ti (AnTi-BMP6), anodized + BMP6 loaded + silk fibroin-coated Ti (AnTi-BMP6-SF), and anodized + BMP6-loaded + silk fibroin with PDGF-coated Ti (AnTi-BMP6-PDGF-SF)) were tested. After SEM characterization, contact angle analysis, and FTIR analysis, the amount of released PDGF and BMP6 was detected using ELISA. Cell proliferation (XTT), mineralization, and gene expression (RUNX2 and ALPL) were also evaluated. RESULTS After successful anodization and loading of PDGF and BMP6, contact angle measurements showed hydrophobicity for TiO2 and hydrophilicity for protein-adsorbed surfaces. In FTIR, protein-containing surfaces exhibited amide-I, amide-II, and amide-III bands at 1600 cm-1 -1700 cm-1 , 1520 cm-1 -1540 cm-1 , and 1220 cm-1 -1300 cm-1 spectrum levels with a significant peak in BMP6- and/or SF-loaded groups at 1100 cm-1 . PDGF release and BMP6 release were delayed, and relatively slower release was detected in SF-coated surfaces. Higher MC3T3-E1 proliferation and mineralization and lower gene expression of RUNX2 and ALPL were detected in AnTi-BMP6-PDGF-SF toward day 28. CONCLUSION The new system revealed a high potential for an improved early osseointegration period by means of a better factor release curve and contribution to the osteoblastic cell proliferation, mineralization, and associated gene expression.
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Affiliation(s)
- H Gencay Keceli
- Periodontology Department, Faculty of Dentistry, Hacettepe University, Ankara, Turkey
| | - Cem Bayram
- Department of Nanotechnology and Nanomedicine, Institute of Science and Technology, Hacettepe University, Ankara, Turkey
| | - Ekin Celik
- Medical Biology Department, Faculty of Medicine, Kirsehir Ahi Evran University, Kirsehir, Turkey
| | - Nuray Ercan
- Periodontology Department, Faculty of Dentistry, Kirikkale University, Kirikkale, Turkey
| | - Murat Demirbilek
- Advanced Technologies Application and Research Center, Hacettepe University, Ankara, Turkey
| | - Rahime Meral Nohutcu
- Periodontology Department, Faculty of Dentistry, Hacettepe University, Ankara, Turkey
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23
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Shen K, Tang Q, Fang X, Zhang C, Zhu Z, Hou Y, Lai M. The sustained release of dexamethasone from TiO 2 nanotubes reinforced by chitosan to enhance osteoblast function and anti-inflammation activity. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 116:111241. [PMID: 32806259 DOI: 10.1016/j.msec.2020.111241] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Revised: 06/20/2020] [Accepted: 06/24/2020] [Indexed: 01/07/2023]
Abstract
Controlling macrophage response to biomaterials is critical for the reduction of inflammation after implantation. Here we designed a sustained release system from TiO2 nanotubes (TNTs) to improve osteogenesis on titanium implants with anti-inflammatory properties. TNTs (around 70 nm diameter) were first fabricated on titanium surfaces by anodization, directly filled with the anti-inflammatory drug, dexamethasone (DEX) and then covered by chitosan (CHI) multilayer films. Primary osteoblast and macrophage (RAW 264.7) cells were cultured on untreated and treated titanium surfaces in vitro. Osteoblasts grown on CHI-coated Dex-filled TNTs surfaces displayed higher alkaline phosphatase (ALP) and mineralization, which was consistent with qRT-PCR analysis of osteoblastic genes including collagen type I (Col I), osteocalcin (OCN), osteopontin (OPN) and runt related transcription factor 2 (Runx2). In contrast, protein levels of nitric oxide (NO) and proinflammatory cytokines (TNF-α and IL-1β) from macrophages on Dex-filled TNTs, CHI-coated TNTs and CHI-coated Dex-filled TNTs were significantly lower, especially on CHI-coated Dex-filled TNTs surfaces compared to levels on titanium and TNTs. These results indicate that CHI-coated Dex-filled TNTs enhanced osteoblast differentiation and decreased the inflammatory response of macrophages. The approach presented here provides new insight into the modification of TNTs for the development of titanium-based implants.
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Affiliation(s)
- Ke Shen
- School of Life Science, Jiangsu Normal University, Xuzhou, Jiangsu 221116, China
| | - Qiang Tang
- School of Life Science, Jiangsu Normal University, Xuzhou, Jiangsu 221116, China
| | - Xingtang Fang
- School of Life Science, Jiangsu Normal University, Xuzhou, Jiangsu 221116, China
| | - Chunlei Zhang
- School of Life Science, Jiangsu Normal University, Xuzhou, Jiangsu 221116, China
| | - Zhaojing Zhu
- Chongqing Engineering Research Center of Pharmaceutical Sciences, Chongqing Medical and Pharmaceutical College, Chongqing 401331, China
| | - Yanhua Hou
- Chongqing Engineering Research Center of Pharmaceutical Sciences, Chongqing Medical and Pharmaceutical College, Chongqing 401331, China
| | - Min Lai
- School of Life Science, Jiangsu Normal University, Xuzhou, Jiangsu 221116, China.
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Hashemi A, Ezati M, Mohammadnejad J, Houshmand B, Faghihi S. Chitosan Coating of TiO2 Nanotube Arrays for Improved Metformin Release and Osteoblast Differentiation. Int J Nanomedicine 2020; 15:4471-4481. [PMID: 32606689 PMCID: PMC7319596 DOI: 10.2147/ijn.s248927] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2020] [Accepted: 06/06/2020] [Indexed: 01/01/2023] Open
Abstract
Background Ineffective integration has been recognized as one of the major causes of early orthopedic failure of titanium-based implants. One strategy to address this problem is to develop modified titanium surfaces that promote osteoblast differentiation. This study explored titanium surfaces modified with TiO2 nanotubes (TiO2 NTs) capable of localized drug delivery into bone and enhanced osteoblast cell differentiation. Materials and Methods Briefly, TiO2 NTs were subjected to anodic oxidation and loaded with Metformin, a widely used diabetes drug. To create surfaces with sustainable drug-eluting characteristics, TiO2 NTs were spin coated with a thin layer of chitosan. The surfaces were characterized via scanning electron microscopy, atomic force microscopy, and contact angle measurements. The surfaces were then exposed to mesenchymal bone marrow stem cells (MSCs) to evaluate cell adhesion, growth, differentiation, and morphology on the modified surfaces. Results A noticeable increase in drug release time (3 days vs 20 days) and a decrease in burst release characteristics (85% to 7%) was observed in coated samples as compared to uncoated samples, respectively. Chitosan-coated TiO2 NTs exhibited a considerable enhancement in cell adhesion, proliferation, and genetic expression of type I collagen, and alkaline phosphatase activity as compared to uncoated TiO2 NTs. Conclusion TiO2 NT surfaces with a chitosan coating are capable of delivering Metformin to a bone site over a sustained period of time with the potential to enhance MSCs cell attachment, proliferation, and differentiation.
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Affiliation(s)
- Amir Hashemi
- Department of Life Science Engineering, Faculty of New Sciences and Technologies, University of Tehran, Tehran 14395-1561, Iran
| | - Masoumeh Ezati
- Tissue Engineering and Biomaterials Research Center, National Institute of Genetic Engineering and Biotechnology (NIGEB), Tehran 14965/161, Iran
| | - Javad Mohammadnejad
- Department of Life Science Engineering, Faculty of New Sciences and Technologies, University of Tehran, Tehran 14395-1561, Iran
| | - Behzad Houshmand
- Department of Periodontics, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran 19857-17443, Iran
| | - Shahab Faghihi
- Tissue Engineering and Biomaterials Research Center, National Institute of Genetic Engineering and Biotechnology (NIGEB), Tehran 14965/161, Iran
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Abstract
Dental implants are frequently used to support fixed or removable dental prostheses to replace missing teeth. The clinical success of titanium dental implants is owed to the exceptional biocompatibility and osseointegration with the bone. Therefore, the enhanced therapeutic effectiveness of dental implants had always been preferred. Several concepts for implant coating and local drug delivery had been developed during the last decades. A drug is generally released by diffusion-controlled, solvent-controlled, and chemical controlled methods. Although a range of surface modifications and coatings (antimicrobial, bioactive, therapeutic drugs) have been explored for dental implants, it is still a long way from designing sophisticated therapeutic implant surfaces to achieve the specific needs of dental patients. The present article reviews various interdisciplinary aspects of surface coatings on dental implants from the perspectives of biomaterials, coatings, drug release, and related therapeutic effects. Additionally, the various types of implant coatings, localized drug release from coatings, and how released agents influence the bone–implant surface interface characteristics are discussed. This paper also highlights several strategies for local drug delivery and their limitations in dental implant coatings as some of these concepts are yet to be applied in clinical settings due to the specific requirements of individual patients.
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Mansoorianfar M, Khataee A, Riahi Z, Shahin K, Asadnia M, Razmjou A, Hojjati-Najafabadi A, Mei C, Orooji Y, Li D. Scalable fabrication of tunable titanium nanotubes via sonoelectrochemical process for biomedical applications. ULTRASONICS SONOCHEMISTRY 2020; 64:104783. [PMID: 31937440 DOI: 10.1016/j.ultsonch.2019.104783] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2019] [Revised: 08/28/2019] [Accepted: 09/06/2019] [Indexed: 06/10/2023]
Abstract
Titanium does not react well with the human tissues and due to its bio-inert nature the surface modification has yet to be well-studied. In this study, the sonoelectrochemical process has been carried out to generate TiO2 nanotube arrays on implantable Ti 6-4. All the prepared nanotubes fill with the vancomycin by immersion and electrophoresis method. Drug-releasing properties, antibacterial behavior, protein adsorption and cell attachment of drug-modified nanotubes are examined by UV-vis, flow cytometry, modified disc diffusion, BSA adsorption, and FESEM, respectively. The most uniform morphology, appropriate drug release, cell viability behavior and antibacterial properties can be achieved by samples anodized in the range of 60-75 V. Also improves the adsorption of BSA protein in bone healing and promotes osteoblast activity and osseointegration. Drug loading efficiency increases up to 60% via electrophoresis comparing the immersion method for anodized sample in 75 V. While electrophoresis does not affect the amount of vancomycin adsorption for lower voltages. Besides, the present study indicates that an anodized sample without drug loading has no antibacterial activity. Moreover, 28-days drug releasing from nanotubes is investigated by mathematical formula according to Fickian's law to find an effective dose of loaded drug.
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Affiliation(s)
- Mojtaba Mansoorianfar
- College of Materials Science and Engineering, Nanjing Forestry University, No. 159, Longpan Road, Nanjing, 210037 Jiangsu, PR China
| | - Alireza Khataee
- Research Laboratory of Advanced Water and Wastewater Treatment Processes, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, 51666-16471 Tabriz, Iran; Department of Environmental Engineering, Gebze Technical University, 41400 Gebze, Turkey
| | - Zohreh Riahi
- Department of Materials Science and Engineering, Sharif University of Technology, Tehran, Iran
| | - Khashayar Shahin
- International Phage Research Center (IPRC), Jiangsu Academy of Agricultural Sciences, Nanjing, China
| | - Mohsen Asadnia
- School of Engineering, Macquarie University, Sydney, Australia
| | - Amir Razmjou
- Department of Biotechnology, Faculty of Advanced Sciences and Technologies, University of Isfahan, Isfahan, Iran; UNESCO Centre for Membrane Science and Technology, School of Chemical Engineering, University of New South Wales, Sydney, Australia
| | - Akbar Hojjati-Najafabadi
- Faculty of Materials, Metallurgy and Chemistry, School of Materials Science and Engineering, Jiangxi University of Science and Technology, Ganzhou, 341000, PR China
| | - Changtong Mei
- College of Materials Science and Engineering, Nanjing Forestry University, No. 159, Longpan Road, Nanjing, 210037 Jiangsu, PR China
| | - Yasin Orooji
- College of Materials Science and Engineering, Nanjing Forestry University, No. 159, Longpan Road, Nanjing, 210037 Jiangsu, PR China.
| | - Dagang Li
- College of Materials Science and Engineering, Nanjing Forestry University, No. 159, Longpan Road, Nanjing, 210037 Jiangsu, PR China.
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27
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The Trends of TiZr Alloy Research as a Viable Alternative for Ti and Ti16 Zr Roxolid Dental Implants. COATINGS 2020. [DOI: 10.3390/coatings10040422] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Despite many discussions about Ti versus Zr, Ti remains the golden standard for dental implants. With the extended use of implants, their rejection in peri-implantitis due to material properties is going to be an important part of oral health problems. Extended use of implants leading to a statistical increase in implant rejection associated with peri-implantitis raises concerns in selecting better implant materials. In this context, starting in the last decade, investigation and use of TiZr alloys as alternatives for Ti in oral dentistry became increasingly more viable. Based on existing new results for Ti16Zr (Roxolid) implants and Ti50Zr alloy behaviour in oral environments, this paper presents the trends of research concerning the electrochemical stability, mechanical, and biological properties of this alloy with treated and untreated surfaces. The surface treatments were mostly performed by anodizing the alloy in various conditions as a non-sophisticated and cheap procedure, leading to nanostructures such as nanopores and nanotubes. The drug loading and release from nanostructured Ti50Zr as an important perspective in oral implant applications is discussed and promoted as well.
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28
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Modifications of Dental Implant Surfaces at the Micro- and Nano-Level for Enhanced Osseointegration. MATERIALS 2019; 13:ma13010089. [PMID: 31878016 PMCID: PMC6982017 DOI: 10.3390/ma13010089] [Citation(s) in RCA: 71] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Revised: 12/13/2019] [Accepted: 12/20/2019] [Indexed: 02/07/2023]
Abstract
This review paper describes several recent modification methods for biocompatible titanium dental implant surfaces. The micro-roughened surfaces reviewed in the literature are sandblasted, large-grit, acid-etched, and anodically oxidized. These globally-used surfaces have been clinically investigated, showing survival rates higher than 95%. In the past, dental clinicians believed that eukaryotic cells for osteogenesis did not recognize the changes of the nanostructures of dental implant surfaces. However, research findings have recently shown that osteogenic cells respond to chemical and morphological changes at a nanoscale on the surfaces, including titanium dioxide nanotube arrangements, functional peptide coatings, fluoride treatments, calcium–phosphorus applications, and ultraviolet photofunctionalization. Some of the nano-level modifications have not yet been clinically evaluated. However, these modified dental implant surfaces at the nanoscale have shown excellent in vitro and in vivo results, and thus promising potential future clinical use.
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Han Y, Liu S, Sun Y, Gu Y, Zhang H. Bioinspired Surface Functionalization of Titanium for Enhanced Lubrication and Sustained Drug Release. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:6735-6741. [PMID: 31030507 DOI: 10.1021/acs.langmuir.9b00338] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Titanium and its alloys have long been used as implantable biomaterials in orthopedics; however, to the best of our knowledge, few studies were reported to investigate surface functionalization of titanium for enhanced lubrication and sustained drug release. In the present study, titania nanotube arrays (TNTs) were prepared by anodization as effective drug nanocarriers, using titanium as the substrate. Meanwhile, motivated by articular cartilage-inspired superlubricity and mussel-inspired adhesion, a copolymer containing both dopamine methacrylamide and 2-methacryloyloxyethyl phosphorylcholine was synthesized (DMA-MPC) and spontaneously grafted onto the TNT surface, which was validated by characterization techniques such as scanning electron microscopy, water contact angle measurements, and X-ray photoelectron spectroscopy. Additionally, the lubrication test showed that copolymer-grafted TNTs have remarkably reduced friction coefficients compared with bare TNTs. Furthermore, the drug release test demonstrated that copolymer-grafted TNTs inhibited burst drug release and achieved sustained drug release in comparison with bare TNTs. In conclusion, the bioinspired surface functionalization strategy developed here, namely DMA-MPC copolymer-grafted TNTs, can be applied to modify orthopedic biomaterials (such as titanium) for enhanced lubrication and sustained drug release.
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Affiliation(s)
- Ying Han
- State Key Laboratory of Tribology, Department of Mechanical Engineering , Tsinghua University , Beijing 100084 , China
| | - Sizhe Liu
- State Key Laboratory of Tribology, Department of Mechanical Engineering , Tsinghua University , Beijing 100084 , China
| | - Yulong Sun
- State Key Laboratory of Tribology, Department of Mechanical Engineering , Tsinghua University , Beijing 100084 , China
| | - Yanhong Gu
- Beijing Key Laboratory of Pipeline Critical Technology and Equipment for Deepwater Oil & Gas Development , Beijing Institute of Petrochemical Technology , Beijing 102617 , China
| | - Hongyu Zhang
- State Key Laboratory of Tribology, Department of Mechanical Engineering , Tsinghua University , Beijing 100084 , China
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Mohammadi F, Golafshan N, Kharaziha M, Ashrafi A. Chitosan-heparin nanoparticle coating on anodized NiTi for improvement of blood compatibility and biocompatibility. Int J Biol Macromol 2019; 127:159-168. [DOI: 10.1016/j.ijbiomac.2019.01.026] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Revised: 12/30/2018] [Accepted: 01/05/2019] [Indexed: 02/04/2023]
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Application of TiO2
Nanotubes as a Drug Delivery System for Biomedical Implants: A Critical Overview. ChemistrySelect 2018. [DOI: 10.1002/slct.201801459] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Gulati K, Hamlet SM, Ivanovski S. Tailoring the immuno-responsiveness of anodized nano-engineered titanium implants. J Mater Chem B 2018; 6:2677-2689. [PMID: 32254221 DOI: 10.1039/c8tb00450a] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Owing to its biocompatibility and corrosion resistance, titanium is one of the most commonly used implantable biomaterials. Numerous in vitro and in vivo investigations have established that titanium surfaces with a nanoscale topography outperform conventional smooth or micro-rough surfaces in terms of achieving desirable bonding with bone (i.e. enhanced bioactivity). Among these nanoscale topographical modifications, ordered nanostructures fabricated via electrochemical anodization, especially titania nanotubes (TNTs), are particularly attractive. This is due to their ability to augment bioactivity, deliver drugs and the potential for easy/cost-effective translation into the current implant market. However, the potential of TNT-modified implants to modulate the host immune-inflammatory response, which is critical for achieving timely osseointegration, remains relatively unexplored. Such immunomodulatory effects may be achieved by modifying the physical and chemical properties of the TNTs. Furthermore, therapeutic/bioactive enhancements performed on these nano-engineered implants (such as antibacterial or osteogenic functions) are likely to illicit an immune response which needs to be appropriately controlled. The lack of sufficient in-depth studies with respect to immune cell responses to TNTs has created research gaps that must be addressed in order to facilitate the design of the next generation of immuno-modulatory titanium implants. This review article focuses on the chemical, topographical and mechanical features of TNT-modified implants that can be manipulated in order to achieve immuno-modulation, as well as providing an insight into how modulating the immune response can augment implant performance.
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Affiliation(s)
- Karan Gulati
- School of Dentistry, The University of Queensland, 288 Herston Road, Herston, QLD 4006, Australia.
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Yang Y, Li X, Qiu H, Li P, Qi P, Maitz MF, You T, Shen R, Yang Z, Tian W, Huang N. Polydopamine Modified TiO 2 Nanotube Arrays for Long-Term Controlled Elution of Bivalirudin and Improved Hemocompatibility. ACS APPLIED MATERIALS & INTERFACES 2018; 10:7649-7660. [PMID: 28845974 DOI: 10.1021/acsami.7b06108] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Sustained and controllable release characteristics are pivotal factors for novel drug delivery technologies. TiO2 nanotube arrays prepared by self-ordering electrochemical anodization are attractive for the development of biomedical devices for local drug delivery applications. In this work, several layers of polydopamine (PDA) were deposited to functionalize TiO2 nanotube arrays. The anticoagulant drug bivalirudin (BVLD) was used as a model drug. PDA extended the release period of BVLD and maintained a sustained release kinetic. Depending on the number of PDA layers, the release characteristics of BVLD improved, as there was a reduced burst release (from 45% to 11%) and extended overall release period from 40 days to more than 300 days in the case of 5 layers. Besides, the BVLD loaded 5-layer PDA coating maintained the high bioactivity of BVLD and effectively reduced the thrombosis formation by inhibition of the adhesion and denaturation of fibrinogen, platelets, and other blood components. Both in vitro and ex vivo blood evaluation results demonstrated that this coating significantly improved the hemocompatibility. These results confirmed the capability of PDA fitted TiO2 nanotube systems to be applied for local drug delivery over an extended period with well retained bioactivity and predictable release kinetics.
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Affiliation(s)
- Ying Yang
- Key Laboratory of Advanced Technology for Materials of Education Ministry, School of Materials Science and Engineering , Southwest Jiaotong University , Chengdu , Sichuan 610031 , China
| | - Xiangyang Li
- Key Laboratory of Advanced Technology for Materials of Education Ministry, School of Materials Science and Engineering , Southwest Jiaotong University , Chengdu , Sichuan 610031 , China
| | - Hua Qiu
- Key Laboratory of Advanced Technology for Materials of Education Ministry, School of Materials Science and Engineering , Southwest Jiaotong University , Chengdu , Sichuan 610031 , China
| | - Ping Li
- Key Laboratory of Advanced Technology for Materials of Education Ministry, School of Materials Science and Engineering , Southwest Jiaotong University , Chengdu , Sichuan 610031 , China
| | - Pengkai Qi
- Key Laboratory of Advanced Technology for Materials of Education Ministry, School of Materials Science and Engineering , Southwest Jiaotong University , Chengdu , Sichuan 610031 , China
| | - Manfred F Maitz
- Key Laboratory of Advanced Technology for Materials of Education Ministry, School of Materials Science and Engineering , Southwest Jiaotong University , Chengdu , Sichuan 610031 , China
- Max Bergmann Center of Biomaterials , Leibniz Institute of Polymer Research Dresden , Hohe Strasse 6 , 01069 Dresden , Germany
| | - Tianxue You
- Key Laboratory of Advanced Technology for Materials of Education Ministry, School of Materials Science and Engineering , Southwest Jiaotong University , Chengdu , Sichuan 610031 , China
| | - Ru Shen
- Key Laboratory of Advanced Technology for Materials of Education Ministry, School of Materials Science and Engineering , Southwest Jiaotong University , Chengdu , Sichuan 610031 , China
| | - Zhilu Yang
- Key Laboratory of Advanced Technology for Materials of Education Ministry, School of Materials Science and Engineering , Southwest Jiaotong University , Chengdu , Sichuan 610031 , China
| | - Wenjie Tian
- Sichuan Provincial People's Hospital , Cardiology , Chengdu , Sichuan 610072 , China
| | - Nan Huang
- Key Laboratory of Advanced Technology for Materials of Education Ministry, School of Materials Science and Engineering , Southwest Jiaotong University , Chengdu , Sichuan 610031 , China
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Co-delivery of ibuprofen and gentamicin from nanoporous anodic titanium dioxide layers. Colloids Surf B Biointerfaces 2017; 152:95-102. [DOI: 10.1016/j.colsurfb.2017.01.011] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2016] [Revised: 12/11/2016] [Accepted: 01/06/2017] [Indexed: 01/26/2023]
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Gulati K, Ivanovski S. Dental implants modified with drug releasing titania nanotubes: therapeutic potential and developmental challenges. Expert Opin Drug Deliv 2016; 14:1009-1024. [PMID: 27892717 DOI: 10.1080/17425247.2017.1266332] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
INTRODUCTION The transmucosal nature of dental implants presents a unique therapeutic challenge, requiring not only rapid establishment and subsequent maintenance of osseointegration, but also the formation of resilient soft tissue integration. Key challenges in achieving long-term success are sub-optimal bone integration in compromised bone conditions and impaired trans-mucosal tissue integration in the presence of a persistent oral microbial biofilm. These challenges can be targeted by employing a drug-releasing implant modification such as TiO2 nanotubes (TNTs), engineered on titanium surfaces via electrochemical anodization. Areas covered: This review focuses on applications of TNT-based dental implants towards achieving optimal therapeutic efficacy. Firstly, the functions of TNT implants will be explored in terms of their influence on osseointegration, soft tissue integration and immunomodulation. Secondly, the developmental challenges associated with such implants are reviewed including sterilization, stability and toxicity. Expert opinion: The potential of TNTs is yet to be fully explored in the context of the complex oral environment, including appropriate modulation of alveolar bone healing, immune-inflammatory processes, and soft tissue responses. Besides long-term in vivo assessment under masticatory loading conditions, investigating drug-release profiles in vivo and addressing various technical challenges are required to bridge the gap between research and clinical dentistry.
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Affiliation(s)
- Karan Gulati
- a School of Dentistry and Oral Health , Griffith University , Gold Coast , Australia.,b Tissue Engineering and Regenerative Medicine (TERM) Group, Understanding Chronic Conditions (UCC) Program, Menzies Health Institute Queensland , Griffith University , Gold Coast , Australia
| | - Sašo Ivanovski
- a School of Dentistry and Oral Health , Griffith University , Gold Coast , Australia.,b Tissue Engineering and Regenerative Medicine (TERM) Group, Understanding Chronic Conditions (UCC) Program, Menzies Health Institute Queensland , Griffith University , Gold Coast , Australia
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37
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Drug-releasing nano-engineered titanium implants: therapeutic efficacy in 3D cell culture model, controlled release and stability. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 69:831-40. [DOI: 10.1016/j.msec.2016.07.047] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2016] [Revised: 06/28/2016] [Accepted: 07/19/2016] [Indexed: 01/05/2023]
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38
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Nanoporous anodic titanium dioxide layers as potential drug delivery systems: Drug release kinetics and mechanism. Colloids Surf B Biointerfaces 2016; 143:447-454. [DOI: 10.1016/j.colsurfb.2016.03.073] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2016] [Revised: 03/22/2016] [Accepted: 03/24/2016] [Indexed: 12/11/2022]
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Campos CH, Díaz CF, Guzmán JL, Alderete JB, Torres CC, Jiménez VA. PAMAM-Conjugated Alumina Nanotubes as Novel Noncytotoxic Nanocarriers with Enhanced Drug Loading and Releasing Performances. MACROMOL CHEM PHYS 2016. [DOI: 10.1002/macp.201600136] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Cristian H. Campos
- Departamento de Química Orgánica; Facultad de Ciencias Químicas; Universidad de Concepción; Casilla 160-C Concepción 4070371 Chile
| | - Carola F. Díaz
- Departamento de Química Orgánica; Facultad de Ciencias Químicas; Universidad de Concepción; Casilla 160-C Concepción 4070371 Chile
| | - José L. Guzmán
- Departamento de Química Orgánica; Facultad de Ciencias Químicas; Universidad de Concepción; Casilla 160-C Concepción 4070371 Chile
| | - Joel B. Alderete
- Departamento de Química Orgánica; Facultad de Ciencias Químicas; Universidad de Concepción; Casilla 160-C Concepción 4070371 Chile
| | - Cecilia C. Torres
- Departamento de Química Orgánica; Facultad de Ciencias Químicas; Universidad de Concepción; Casilla 160-C Concepción 4070371 Chile
| | - Verónica A. Jiménez
- Departamento de Ciencias Químicas; Facultad de Ciencias Exactas; Universidad Andres Bello; Sede Concepción Talcahuano 4260000 Chile
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Gulati K, Johnson L, Karunagaran R, Findlay D, Losic D. In Situ Transformation of Chitosan Films into Microtubular Structures on the Surface of Nanoengineered Titanium Implants. Biomacromolecules 2016; 17:1261-71. [DOI: 10.1021/acs.biomac.5b01037] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Karan Gulati
- School of Chemical Engineering and §Discipline of Orthopaedics
and Trauma, University of Adelaide, Adelaide, SA, Australia
| | - Lucas Johnson
- School of Chemical Engineering and §Discipline of Orthopaedics
and Trauma, University of Adelaide, Adelaide, SA, Australia
| | - Ramesh Karunagaran
- School of Chemical Engineering and §Discipline of Orthopaedics
and Trauma, University of Adelaide, Adelaide, SA, Australia
| | - David Findlay
- School of Chemical Engineering and §Discipline of Orthopaedics
and Trauma, University of Adelaide, Adelaide, SA, Australia
| | - Dusan Losic
- School of Chemical Engineering and §Discipline of Orthopaedics
and Trauma, University of Adelaide, Adelaide, SA, Australia
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41
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Roopmani P, Sethuraman S, Satheesh S, Maheswari Krishnan U. The metamorphosis of vascular stents: passive structures to smart devices. RSC Adv 2016. [DOI: 10.1039/c5ra19109b] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
The role of nanotechnology enabled techniques in the evolution of vascular stents.
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Affiliation(s)
- Purandhi Roopmani
- Centre for Nanotechnology and Advanced Biomaterials (CeNTAB)
- School of Chemical and Biotechnology
- SASTRA University
- Thanjavur-613 401
- India
| | - Swaminathan Sethuraman
- Centre for Nanotechnology and Advanced Biomaterials (CeNTAB)
- School of Chemical and Biotechnology
- SASTRA University
- Thanjavur-613 401
- India
| | - Santhosh Satheesh
- Jawaharlal Institute of Post Graduate Medical Education and Research (JIPMER)
- Department of Cardiology
- Pondicherry-605 006
- India
| | - Uma Maheswari Krishnan
- Centre for Nanotechnology and Advanced Biomaterials (CeNTAB)
- School of Chemical and Biotechnology
- SASTRA University
- Thanjavur-613 401
- India
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42
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Rahman S, Gulati K, Kogawa M, Atkins GJ, Pivonka P, Findlay DM, Losic D. Drug diffusion, integration, and stability of nanoengineered drug-releasing implants in bone ex-vivo. J Biomed Mater Res A 2015; 104:714-725. [DOI: 10.1002/jbm.a.35595] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2015] [Revised: 10/13/2015] [Accepted: 10/16/2015] [Indexed: 11/10/2022]
Affiliation(s)
- Shafiur Rahman
- School of Chemical Engineering; University of Adelaide; SA 5005 Australia
| | - Karan Gulati
- School of Chemical Engineering; University of Adelaide; SA 5005 Australia
| | - Masakazu Kogawa
- Discipline of Orthopaedics and Trauma; University of Adelaide; SA 5005 Australia
| | - Gerald J. Atkins
- Discipline of Orthopaedics and Trauma; University of Adelaide; SA 5005 Australia
| | - Peter Pivonka
- Australian Institute for Musculoskeletal Science, University of Melbourne; VIC 3021 Australia
| | - David M. Findlay
- Discipline of Orthopaedics and Trauma; University of Adelaide; SA 5005 Australia
| | - Dusan Losic
- School of Chemical Engineering; University of Adelaide; SA 5005 Australia
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43
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Gulati K, Kogawa M, Maher S, Atkins G, Findlay D, Losic D. Titania Nanotubes for Local Drug Delivery from Implant Surfaces. ACTA ACUST UNITED AC 2015. [DOI: 10.1007/978-3-319-20346-1_10] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Antibacterial Effects and Biocompatibility of Titania Nanotubes with Octenidine Dihydrochloride/Poly(lactic-co-glycolic acid). BIOMED RESEARCH INTERNATIONAL 2015; 2015:836939. [PMID: 26090449 PMCID: PMC4452295 DOI: 10.1155/2015/836939] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/23/2015] [Revised: 03/11/2015] [Accepted: 03/13/2015] [Indexed: 01/20/2023]
Abstract
Titanium (Ti) implants with long-term antibacterial ability and good biocompatibility are highly desirable materials that can be used to prevent implant-associated infections. In this study, titania nanotubes (TNTs) were synthesized on Ti surfaces through electrochemical anodization. Octenidine dihydrochloride (OCT)/poly(lactic-co-glycolic acid) (PLGA) was infiltrated into TNTs using a simple solvent-casting technique. OCT/PLGA-TNTs demonstrated sustained drug release and maintained the characteristic hollow structures of TNTs. TNTs (200 nm in diameter) alone exhibited slight antibacterial effect and good osteogenic activity but also evidently impaired adhesion and proliferation of bone marrow mesenchymal stem cells (BMSCs). OCT/PLGA-TNTs (100 nm in diameter) supported BMSC adhesion and proliferation and showed good osteogenesis-inducing ability. OCT/PLGA-TNTs also exhibited good long-term antibacterial ability within the observation period of 7 d. The synthesized drug carrier with relatively long-term antibacterial ability and enhanced excellent biocompatibility demonstrated significant potential in bone implant applications.
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Kulkarni M, Mazare A, Gongadze E, Perutkova Š, Kralj-Iglič V, Milošev I, Schmuki P, Mozetič M. Titanium nanostructures for biomedical applications. NANOTECHNOLOGY 2015; 26:062002. [PMID: 25611515 DOI: 10.1088/0957-4484/26/6/062002] [Citation(s) in RCA: 224] [Impact Index Per Article: 24.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Titanium and titanium alloys exhibit a unique combination of strength and biocompatibility, which enables their use in medical applications and accounts for their extensive use as implant materials in the last 50 years. Currently, a large amount of research is being carried out in order to determine the optimal surface topography for use in bioapplications, and thus the emphasis is on nanotechnology for biomedical applications. It was recently shown that titanium implants with rough surface topography and free energy increase osteoblast adhesion, maturation and subsequent bone formation. Furthermore, the adhesion of different cell lines to the surface of titanium implants is influenced by the surface characteristics of titanium; namely topography, charge distribution and chemistry. The present review article focuses on the specific nanotopography of titanium, i.e. titanium dioxide (TiO2) nanotubes, using a simple electrochemical anodisation method of the metallic substrate and other processes such as the hydrothermal or sol-gel template. One key advantage of using TiO2 nanotubes in cell interactions is based on the fact that TiO2 nanotube morphology is correlated with cell adhesion, spreading, growth and differentiation of mesenchymal stem cells, which were shown to be maximally induced on smaller diameter nanotubes (15 nm), but hindered on larger diameter (100 nm) tubes, leading to cell death and apoptosis. Research has supported the significance of nanotopography (TiO2 nanotube diameter) in cell adhesion and cell growth, and suggests that the mechanics of focal adhesion formation are similar among different cell types. As such, the present review will focus on perhaps the most spectacular and surprising one-dimensional structures and their unique biomedical applications for increased osseointegration, protein interaction and antibacterial properties.
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Affiliation(s)
- M Kulkarni
- Laboratory of Biophysics, Faculty of Electrical Engineering, University of Ljubljana, Ljubljana SI-1000, Slovenia. Department of Materials Science and Engineering, Chair of Surface Science and Corrosion, University of Erlangen-Nuremberg, WW4-LKO, Erlangen, Germany
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46
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Galkina OL, Ivanov VK, Agafonov AV, Seisenbaeva GA, Kessler VG. Cellulose nanofiber–titania nanocomposites as potential drug delivery systems for dermal applications. J Mater Chem B 2015; 3:1688-1698. [DOI: 10.1039/c4tb01823k] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Nanocomposites with potential for dermal drug delivery have been developed using nanotitania chemically grafted onto nanocellulose as an active ingredient for enhanced uptake and controlled release of model drug loads.
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Affiliation(s)
- O. L. Galkina
- Institute of Solution Chemistry of the Russian Academy of Sciences
- Ivanovo, Russia
- Department of Chemistry and Biotechnology
- Swedish University of Agricultural Sciences
- 750 07 Uppsala, Sweden
| | - V. K. Ivanov
- Kurnakov Institute of General and Inorganic Chemistry
- Moscow, Russia
- National Research Tomsk State University
- Tomsk, Russia
| | - A. V. Agafonov
- Institute of Solution Chemistry of the Russian Academy of Sciences
- Ivanovo, Russia
| | - G. A. Seisenbaeva
- Department of Chemistry and Biotechnology
- Swedish University of Agricultural Sciences
- 750 07 Uppsala, Sweden
- CaptiGel AB
- 75450 Uppsala, Sweden
| | - V. G. Kessler
- Department of Chemistry and Biotechnology
- Swedish University of Agricultural Sciences
- 750 07 Uppsala, Sweden
- CaptiGel AB
- 75450 Uppsala, Sweden
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47
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Nanoporous Anodic Alumina for Drug Delivery and Biomedical Applications. NANOPOROUS ALUMINA 2015. [DOI: 10.1007/978-3-319-20334-8_11] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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48
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Gulati K, Kant K, Findlay D, Losic D. Periodically tailored titania nanotubes for enhanced drug loading and releasing performances. J Mater Chem B 2015; 3:2553-2559. [DOI: 10.1039/c4tb01882f] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Structural engineering of titania nanotubes (TNTs) with periodically shaped structures was successfully demonstrated as a strategy to improve drug loading and releasing performances of TNTs/Ti implants.
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Affiliation(s)
- Karan Gulati
- School of Chemical Engineering
- The University of Adelaide
- Adelaide
- Australia
| | - Krishna Kant
- School of Chemical Engineering
- The University of Adelaide
- Adelaide
- Australia
| | - David Findlay
- Discipline of Orthopaedics & Trauma
- University of Adelaide
- Australia
| | - Dusan Losic
- School of Chemical Engineering
- The University of Adelaide
- Adelaide
- Australia
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49
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Losic D, Aw MS, Santos A, Gulati K, Bariana M. Titania nanotube arrays for local drug delivery: recent advances and perspectives. Expert Opin Drug Deliv 2014; 12:103-27. [DOI: 10.1517/17425247.2014.945418] [Citation(s) in RCA: 121] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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50
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Lee K, Mazare A, Schmuki P. One-dimensional titanium dioxide nanomaterials: nanotubes. Chem Rev 2014; 114:9385-454. [PMID: 25121734 DOI: 10.1021/cr500061m] [Citation(s) in RCA: 506] [Impact Index Per Article: 50.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Kiyoung Lee
- Department of Materials Science WW4-LKO, University of Erlangen-Nuremberg , Martensstrasse 7, 91058 Erlangen, Germany
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