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Tan X, Wang Z, Yang X, Yu P, Sun M, Zhao Y, Yu H. Enhancing cell adhesive and antibacterial activities of glass-fibre-reinforced polyetherketoneketone through Mg and Ag PIII. Regen Biomater 2023; 10:rbad066. [PMID: 37489146 PMCID: PMC10363026 DOI: 10.1093/rb/rbad066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Revised: 06/24/2023] [Accepted: 06/29/2023] [Indexed: 07/26/2023] Open
Abstract
Glass-fibre-reinforced polyetherketoneketone (PEKK-GF) shows great potential for application as a dental implant restoration material; however, its surface bioinertness and poor antibacterial properties limit its integration with peri-implant soft tissue, which is critical in the long-term success of implant restoration. Herein, functional magnesium (Mg) and silver (Ag) ions were introduced into PEKK-GF by plasma immersion ion implantation (PIII). Surface characterization confirmed that the surface morphology of PEKK-GF was not visibly affected by PIII treatment. Further tests revealed that PIII changed the wettability and electrochemical environment of the PEKK-GF surface and enabled the release of Mg2+ and Ag+ modulated by Giavanni effect. In vitro experiments showed that Mg/Ag PIII-treated PEKK-GF promoted the proliferation and adhesion of human gingival fibroblasts and upregulated the expression of adhesion-related genes and proteins. In addition, the treated samples inhibited the metabolic viability and adhesion of Streptococcus mutans and Porphyromonas gingivalis on their surfaces, distorting bacterial morphology. Mg/Ag PIII surface treatment improved the soft tissue integration and antibacterial activities of PEKK-GF, which will further support and broaden its adoption in dentistry.
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Affiliation(s)
| | | | - Xin Yang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Ping Yu
- Department of Stomatology, Chengdu Second People’s Hospital, Chengdu, China
| | - Manlin Sun
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Yuwei Zhao
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Haiyang Yu
- Correspondence address. Tel: +86 0 18980685999, E-mail:
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2
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Synthesis, characterization, and in vitro bioactivity, mechanical strength of silver doped akermanite bioceramic. INORG CHEM COMMUN 2023. [DOI: 10.1016/j.inoche.2022.110347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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3
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Kumari S, Katiyar S, Darshna, Anand A, Singh D, Singh BN, Mallick SP, Mishra A, Srivastava P. Design strategies for composite matrix and multifunctional polymeric scaffolds with enhanced bioactivity for bone tissue engineering. Front Chem 2022; 10:1051678. [PMID: 36518978 PMCID: PMC9742444 DOI: 10.3389/fchem.2022.1051678] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2022] [Accepted: 11/14/2022] [Indexed: 09/19/2023] Open
Abstract
Over the past few decades, various bioactive material-based scaffolds were investigated and researchers across the globe are actively involved in establishing a potential state-of-the-art for bone tissue engineering applications, wherein several disciplines like clinical medicine, materials science, and biotechnology are involved. The present review article's main aim is to focus on repairing and restoring bone tissue defects by enhancing the bioactivity of fabricated bone tissue scaffolds and providing a suitable microenvironment for the bone cells to fasten the healing process. It deals with the various surface modification strategies and smart composite materials development that are involved in the treatment of bone tissue defects. Orthopaedic researchers and clinicians constantly focus on developing strategies that can naturally imitate not only the bone tissue architecture but also its functional properties to modulate cellular behaviour to facilitate bridging, callus formation and osteogenesis at critical bone defects. This review summarizes the currently available polymeric composite matrices and the methods to improve their bioactivity for bone tissue regeneration effectively.
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Affiliation(s)
- Shikha Kumari
- School of Biochemical Engineering, IIT BHU, Varanasi, India
| | - Soumya Katiyar
- School of Biochemical Engineering, IIT BHU, Varanasi, India
| | - Darshna
- School of Biochemical Engineering, IIT BHU, Varanasi, India
| | - Aditya Anand
- School of Biochemical Engineering, IIT BHU, Varanasi, India
| | - Divakar Singh
- School of Biochemical Engineering, IIT BHU, Varanasi, India
| | - Bhisham Narayan Singh
- Department of Ageing Research, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, India
| | - Sarada Prasanna Mallick
- Department of Biotechnology, Koneru Lakshmaiah Education Foundation, Vaddeswaram, Andhra Pradesh, India
| | - Abha Mishra
- School of Biochemical Engineering, IIT BHU, Varanasi, India
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4
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Sikder P, Nagaraju P, Naganaboyina HPS. 3D-Printed Piezoelectric Porous Bioactive Scaffolds and Clinical Ultrasonic Stimulation Can Help in Enhanced Bone Regeneration. Bioengineering (Basel) 2022; 9:679. [PMID: 36421081 PMCID: PMC9687159 DOI: 10.3390/bioengineering9110679] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Revised: 11/08/2022] [Accepted: 11/08/2022] [Indexed: 12/01/2023] Open
Abstract
This paper presents a comprehensive effort to develop and analyze first-of-its-kind design-specific and bioactive piezoelectric scaffolds for treating orthopedic defects. The study has three major highlights. First, this is one of the first studies that utilize extrusion-based 3D printing to develop design-specific macroporous piezoelectric scaffolds for treating bone defects. The scaffolds with controlled pore size and architecture were synthesized based on unique composite formulations containing polycaprolactone (PCL) and micron-sized barium titanate (BaTiO3) particles. Second, the bioactive PCL-BaTiO3 piezoelectric composite formulations were explicitly developed in the form of uniform diameter filaments, which served as feedstock material for the fused filament fabrication (FFF)-based 3D printing. A combined method comprising solvent casting and extrusion (melt-blending) was designed and deemed suitable to develop the high-quality PCL-BaTiO3 bioactive composite filaments for 3D printing. Third, clinical ultrasonic stimulation (US) was used to stimulate the piezoelectric effect, i.e., create stress on the PCL-BaTiO3 scaffolds to generate electrical fields. Subsequently, we analyzed the impact of scaffold-generated piezoelectric stimulation on MC3T3 pre-osteoblast behavior. Our results confirmed that FFF could form high-resolution, macroporous piezoelectric scaffolds, and the poled PCL-BaTiO3 composites resulted in the d33 coefficient in the range of 1.2-2.6 pC/N, which is proven suitable for osteogenesis. In vitro results revealed that the scaffolds with a mean pore size of 320 µm resulted in the highest pre-osteoblast growth kinetics. While 1 Hz US resulted in enhanced pre-osteoblast adhesion, proliferation, and spreading, 3 Hz US benefited osteoblast differentiation by upregulating important osteogenic markers. This study proves that 3D-printed bioactive piezoelectric scaffolds coupled with US are promising to expedite bone regeneration in orthopedic defects.
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Affiliation(s)
- Prabaha Sikder
- Department of Mechanical Engineering, Cleveland State University, Cleveland, OH 44115, USA
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5
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Florea DA, Grumezescu V, Bîrcă AC, Vasile BȘ, Mușat M, Chircov C, Stan MS, Grumezescu AM, Andronescu E, Chifiriuc MC. Design, Characterization, and Antibacterial Performance of MAPLE-Deposited Coatings of Magnesium Phosphate-Containing Silver Nanoparticles in Biocompatible Concentrations. Int J Mol Sci 2022; 23:ijms23147910. [PMID: 35887261 PMCID: PMC9321465 DOI: 10.3390/ijms23147910] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Revised: 07/15/2022] [Accepted: 07/16/2022] [Indexed: 01/21/2023] Open
Abstract
Bone disorders and traumas represent a common type of healthcare emergency affecting men and women worldwide. Since most of these diseases imply surgery, frequently complicated by exogenous or endogenous infections, there is an acute need for improving their therapeutic approaches, particularly in clinical conditions requiring orthopedic implants. Various biomaterials have been investigated in the last decades for their potential to increase bone regeneration and prevent orthopedic infections. The present study aimed to develop a series of MAPLE-deposited coatings composed of magnesium phosphate (Mg3(PO4)2) and silver nanoparticles (AgNPs) designed to ensure osteoblast proliferation and anti-infective properties simultaneously. Mg3(PO4)2 and AgNPs were obtained through the cooling bath reaction and chemical reduction, respectively, and then characterized through X-ray Diffraction (XRD), Transmission Electron Microscopy (TEM), and Selected Area Electron Diffraction (SAED). Subsequently, the obtained coatings were evaluated by Infrared Microscopy (IRM), Fourier-Transform Infrared Spectroscopy (FT-IR), and Scanning Electron Microscopy (SEM). Their biological properties show that the proposed composite coatings exhibit well-balanced biocompatibility and antibacterial activity, promoting osteoblasts viability and proliferation and inhibiting the adherence and growth of Staphylococcus aureus and Pseudomonas aeruginosa, two of the most important agents of orthopedic implant-associated infections.
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Affiliation(s)
- Denisa Alexandra Florea
- Department of Science and Engineering of Oxide Materials and Nanomaterials, Politehnica University of Bucharest, 011061 Bucharest, Romania; (D.A.F.); (A.C.B.); (B.Ș.V.); (M.M.); (C.C.); (A.M.G.)
| | - Valentina Grumezescu
- National Institute for Lasers, Plasma and Radiation Physics, 409 Atomistilor Street, 077125 Magurele, Romania;
| | - Alexandra Cătălina Bîrcă
- Department of Science and Engineering of Oxide Materials and Nanomaterials, Politehnica University of Bucharest, 011061 Bucharest, Romania; (D.A.F.); (A.C.B.); (B.Ș.V.); (M.M.); (C.C.); (A.M.G.)
| | - Bogdan Ștefan Vasile
- Department of Science and Engineering of Oxide Materials and Nanomaterials, Politehnica University of Bucharest, 011061 Bucharest, Romania; (D.A.F.); (A.C.B.); (B.Ș.V.); (M.M.); (C.C.); (A.M.G.)
| | - Mihaela Mușat
- Department of Science and Engineering of Oxide Materials and Nanomaterials, Politehnica University of Bucharest, 011061 Bucharest, Romania; (D.A.F.); (A.C.B.); (B.Ș.V.); (M.M.); (C.C.); (A.M.G.)
| | - Cristina Chircov
- Department of Science and Engineering of Oxide Materials and Nanomaterials, Politehnica University of Bucharest, 011061 Bucharest, Romania; (D.A.F.); (A.C.B.); (B.Ș.V.); (M.M.); (C.C.); (A.M.G.)
| | - Miruna S. Stan
- Research Institute of the University of Bucharest (ICUB), University of Bucharest, 050657 Bucharest, Romania;
- Department of Biochemistry and Molecular Biology, Faculty of Biology, University of Bucharest, 050095 Bucharest, Romania
| | - Alexandru Mihai Grumezescu
- Department of Science and Engineering of Oxide Materials and Nanomaterials, Politehnica University of Bucharest, 011061 Bucharest, Romania; (D.A.F.); (A.C.B.); (B.Ș.V.); (M.M.); (C.C.); (A.M.G.)
- Research Institute of the University of Bucharest (ICUB), University of Bucharest, 050657 Bucharest, Romania;
- Academy of Romanian Scientists, Ilfov No. 3, 050044 Bucharest, Romania;
| | - Ecaterina Andronescu
- Department of Science and Engineering of Oxide Materials and Nanomaterials, Politehnica University of Bucharest, 011061 Bucharest, Romania; (D.A.F.); (A.C.B.); (B.Ș.V.); (M.M.); (C.C.); (A.M.G.)
- Academy of Romanian Scientists, Ilfov No. 3, 050044 Bucharest, Romania;
- Correspondence:
| | - Mariana Carmen Chifiriuc
- Academy of Romanian Scientists, Ilfov No. 3, 050044 Bucharest, Romania;
- Department of Microbiology, Faculty of Biology, University of Bucharest, Aleea Portocalelor Str. 1-3, District 5, 060101 Bucharest, Romania
- The Romanian Academy, Calea Victoriei 25, District 1, 010071 Bucharest, Romania
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Corrosion Behavior in Magnesium-Based Alloys for Biomedical Applications. MATERIALS 2022; 15:ma15072613. [PMID: 35407944 PMCID: PMC9000648 DOI: 10.3390/ma15072613] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 03/13/2022] [Accepted: 03/15/2022] [Indexed: 12/14/2022]
Abstract
Magnesium alloys exhibit superior biocompatibility and biodegradability, which makes them an excellent candidate for artificial implants. However, these materials also suffer from lower corrosion resistance, which limits their clinical applicability. The corrosion mechanism of Mg alloys is complicated since the spontaneous occurrence is determined by means of loss of aspects, e.g., the basic feature of materials and various corrosive environments. As such, this study provides a review of the general degradation/precipitation process multifactorial corrosion behavior and proposes a reasonable method for modeling and preventing corrosion in metals. In addition, the composition design, the structural treatment, and the surface processing technique are involved as potential methods to control the degradation rate and improve the biological properties of Mg alloys. This systematic representation of corrosive mechanisms and the comprehensive discussion of various technologies for applications could lead to improved designs for Mg-based biomedical devices in the future.
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Wang J, Xia H, Fan X, Wu H, Liao Y, Yuan F. Biodegradable Zn-2Ag-0.04Mg Alloy for Bone Regeneration In Vivo. Mol Biotechnol 2022; 64:928-935. [PMID: 35260964 DOI: 10.1007/s12033-022-00474-4] [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: 01/11/2022] [Accepted: 02/23/2022] [Indexed: 11/25/2022]
Abstract
To evaluate the bone regeneration capacity of Zn-2Ag-0.04Mg alloy scaffold in vivo. Zn, Zn-2Ag and Zn-2Ag-0.04Mg scaffolds were implanted in the femur of New Zealand rabbits, and the degradation of the scaffolds and the regeneration of the bone were observed at 6th week and 6th month. Two-dimensional and three-dimensional micro-CT results showed the new bone in Zn-2Ag-0.04Mg alloy scaffold group was significant more than Zn scaffold group, the bone volume in Zn-2Ag-0.04Mg was higher. Moreover, the osteogenic index in the Zn-2Ag-0.04Mg alloy scaffold group was also higher than Zn scaffold group. At 6th month, the scaffold of Zn-2Ag-0.04Mg was smaller than Zn group or Zn-2Ag group. HE staining of the liver, kidney, and heart did not detect any abnormalities, confirmed the biosafety of the Zn-2Ag-0.04Mg alloy scaffold. The Zn-Ag-0.04Mg alloy scaffold exhibits good biocompatibility and bone regeneration ability in vivo.
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Affiliation(s)
- Jian Wang
- Department of Orthopedics, Tongji Hospital, School of Medicine, Tongji University, No.389 Xincun Road, Shanghai, 200065, China.,Department of Orthopaedics, Karamay Central Hospital of Xinjiang, Karamay, 834000, China
| | - Haijun Xia
- Department of Orthopaedics, Karamay Central Hospital of Xinjiang, Karamay, 834000, China
| | - Xiaolei Fan
- Department of Orthopaedics, Karamay Central Hospital of Xinjiang, Karamay, 834000, China
| | - Hongzi Wu
- Department of Orthopaedics, Karamay Central Hospital of Xinjiang, Karamay, 834000, China
| | - Yi Liao
- Department of Orthopaedics, Karamay Central Hospital of Xinjiang, Karamay, 834000, China.
| | - Feng Yuan
- Department of Orthopedics, Tongji Hospital, School of Medicine, Tongji University, No.389 Xincun Road, Shanghai, 200065, China.
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8
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Gu X, Li Y, Qi C, Cai K. Biodegradable magnesium phosphates in biomedical applications. J Mater Chem B 2022; 10:2097-2112. [DOI: 10.1039/d1tb02836g] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
As an essential element, magnesium is involved in a variety of physiological processes. Magnesium is the second most abundant cation in cells and the fourth most abundant cation in living...
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9
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Zhou H, Yang L, Gbureck U, Bhaduri SB, Sikder P. Monetite, an important calcium phosphate compound-Its synthesis, properties and applications in orthopedics. Acta Biomater 2021; 127:41-55. [PMID: 33812072 DOI: 10.1016/j.actbio.2021.03.050] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Revised: 03/22/2021] [Accepted: 03/23/2021] [Indexed: 12/15/2022]
Abstract
This review recognizes a unique calcium phosphate (CaP) phase known as monetite or dicalcium phosphate anhydrous (DCPA, CaHPO4), and presents an overview of its properties, processing, and applications in orthopedics. The motivation for the present effort is to highlight the state-of-the-art research and development of monetite and propel the research community to explore more of its potentials in orthopedics. After a brief introduction of monetite, we provide a summary of its various synthesis routes like dehydration, solvent-based, energy-assisted processes and also discuss the formation of different crystal structures with respect to the synthesis conditions. Subsequently, we discuss the material's noteworthy physico-chemical properties including the crystal structure, vibrational spectra, solubility, thermal decomposition, and conversion to other phases. Of note, we focus on the biological (in vitro and in vivo) properties of monetite, given its ever-increasing popularity as a biomaterial for medical implants. Appropriately, we discuss various orthopedic applications of monetite as bone cement, implant coatings, granules for defect fillers, and scaffolds. Many in vitro and in vivo studies confirmed the favorable osteointegration and osteoconduction properties of monetite products, along with a better balance between implant resorption and new bone formation as compared to other CaP phases. The review ends with translational aspects of monetite and presents thoughts about its possible future research directions. Further research may explore but not limited to improvements in mechanical strength of monetite-based scaffolds, using monetite particles as a therapeutic agent delivery, and tissue engineering strategies where monetite serves as the biomaterial. STATEMENT OF SIGNIFICANCE: This is the first review that focusses on the favorable potential of monetite for hard tissue repair and regeneration. The article accurately covers the "Synthesis-Structure-Property-Applications" correlations elaborating on monetite's diverse material properties. Special focus is put on the in vitro and in vivo properties of the material highlighting monetite as an orthopedic material-of-choice. The synthesis techniques are discussed which provide important information about the different fabrication routes for monetite. Most importantly, the review provides comprehensive knowledge about the diverse biomedical applications of monetite as granules, defect--specific scaffolds, bone cements and implant coatings. This review will help to highlight monetite's potential as an effective regenerative medicine and catalyze the continuing translation of this bioceramic from the laboratory to clinics.
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Affiliation(s)
- H Zhou
- Center for Health Science and Engineering, School of Materials Science and Engineering, Hebei University of Technology, Tianjin, China; International Research Center for Translational Orthopaedics (IRCTO), Jiangsu, China
| | - L Yang
- Center for Health Science and Engineering, School of Materials Science and Engineering, Hebei University of Technology, Tianjin, China; International Research Center for Translational Orthopaedics (IRCTO), Jiangsu, China
| | - U Gbureck
- Department for Functional Materials in Medicine and Dentistry, University Hospital of Würzburg, Würzburg, Germany
| | - S B Bhaduri
- Department of Mechanical, Industrial & Manufacturing Engineering, The University of Toledo, Toledo, OH, USA; ENG-EEC Division, The National Science Foundation (NSF), Alexandria, VA, USA
| | - P Sikder
- Department of Mechanical Engineering, Cleveland State University, Cleveland, OH, USA.
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Elhattab K, Bhaduri SB, Lawrence JG, Sikder P. Fused Filament Fabrication (Three-Dimensional Printing) of Amorphous Magnesium Phosphate/Polylactic Acid Macroporous Biocomposite Scaffolds. ACS APPLIED BIO MATERIALS 2021; 4:3276-3286. [PMID: 35014414 DOI: 10.1021/acsabm.0c01620] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The ultimate goal of this paper is to develop novel ceramic-polymer-based biocomposite orthopedic scaffolds with the help of additive manufacturing. Specifically, we incorporate a bioceramic known as amorphous magnesium phosphate (AMP) into polylactic acid (PLA) with the help of the melt-blending technique. Magnesium phosphate (MgP) was chosen as the bioactive component as previous studies have confirmed its favorable biomaterial properties, especially in orthopedics. Special care was taken to develop constant diameter AMP-PLA composite filaments, which would serve as feedstock for a fused filament fabrication (FFF)-based three-dimensional (3D) printer. Before the filaments were used for FFF, a thorough set of characterization protocols comprising of phase analysis, microstructure evaluations, thermal analysis, rheological analysis, and in vitro degradation determinations was performed on the biocomposites. Scanning electron microscopy (SEM) results confirmed a homogenous dispersion of AMP particles in the PLA matrix. Rheological studies demonstrated good printability behavior of the AMP-PLA filaments. In vitro degradation studies indicated a faster degradation rate in the case of AMP-PLA filaments as compared to the single phase PLA filaments. Subsequently, the filaments were fed into an FFF setup, and tensile bars and design-specific macroporous AMP-PLA scaffolds were printed. The biocomposite exhibited favorable mechanical properties. Furthermore, in vitro cytocompatibility results revealed higher pre-osteoblast cell attachment and proliferation on AMP-PLA scaffolds as compared to single-phase PLA scaffolds. Altogether, this study provides a proof of concept that design-specific bioactive AMP-PLA biocomposite scaffolds fabricated by FFF can be potential candidates as medical implants in orthopedics.
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Affiliation(s)
- Karim Elhattab
- Department of Bioengineering, The University of Toledo, Toledo, Ohio 43606, United States
| | - Sarit B Bhaduri
- Department of Mechanical, Industrial and Manufacturing Engineering, The University of Toledo, Toledo, Ohio 43606, United States.,EEC Division, Directorate of Engineering, The National Science Foundation, Alexandria, Virginia 22314, United States
| | - Joseph G Lawrence
- Department of Chemical Engineering, The University of Toledo, Toledo, Ohio 43606, United States
| | - Prabaha Sikder
- Department of Mechanical Engineering, Cleveland State University, Cleveland, Ohio 44115, United States
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Agbe H, Sarkar DK, Chen XG, Faucheux N, Soucy G, Bernier JL. Silver-Polymethylhydrosiloxane Nanocomposite Coating on Anodized Aluminum with Superhydrophobic and Antibacterial Properties. ACS APPLIED BIO MATERIALS 2020; 3:4062-4073. [PMID: 35025481 DOI: 10.1021/acsabm.0c00159] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Biofilm formation on both animate and inanimate surfaces serves as an ideal bacterial reservoir for the spread of nosocomial infections. Designing surfaces with both superhydrophobic and antibacterial properties can help reduce initial bacterial attachment and subsequent biofilm formation. In the present study, a two-step approach is deployed to fabricate silver-polymethylhydrosiloxane (Ag-PMHS) nanocomposites, followed by a simple dip-coating deposition on anodized Al. Ag-nanoparticles (Ag-NPs) are synthesized in situ within a PMHS polymeric matrix. Morphological features of Ag-PMHS coating observed by scanning electron microscopy shows heterogeneous micro-nano-structures. The chemical compositions of these coatings were characterized using X-ray diffraction and attenuated total reflection-Fourier transform infrared spectroscopy, which indicate the presence of a low-energy PMHS polymer. The as-synthesized Ag-PMHS nanocomposite demonstrated excellent antibacterial properties against clinically relevant planktonic bacteria with zone of inhibition values of 25.3 ± 0.5, 24.8 ± 0.5, and 23.3 ± 3.6 mm for Pseudomonas aeruginosa (P.A) (Gram -ve), Escherichia coli (E. coli) (Gram -ve), and Staphylococcus aureus (S.A) (Gram +ve), respectively. The Ag-PMHS nanocomposite coating on anodized Al provides an anti-biofouling property with an adhesion reduction of 99.0, 99.5, and 99.3% for Pseudomomas aeruginosa (P.A), E. coli, and S. aureus (S.A), respectively. Interestingly, the coating maintained a stable contact angle of 158° after 90 days of immersion in saline water (3.5 wt % NaCl, pH 7.4). The Ag-PMHS nanocomposite coating on anodized Al described herein demonstrates excellent antibacterial and anti-biofouling properties owing to its inherent superhydrophobic property.
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Affiliation(s)
- Henry Agbe
- Department of Applied Science, University of Québec at Chicoutimi, Aluminum Research Center-REGAL, Chicoutimi, Quebec G7H 2B1, Canada
| | - Dilip Kumar Sarkar
- Department of Applied Science, University of Québec at Chicoutimi, Aluminum Research Center-REGAL, Chicoutimi, Quebec G7H 2B1, Canada
| | - X-Grant Chen
- Department of Applied Science, University of Québec at Chicoutimi, Aluminum Research Center-REGAL, Chicoutimi, Quebec G7H 2B1, Canada
| | - Nathalie Faucheux
- Department of Chemical and Biotechnological Engineering, Université de Sherbrooke, Sherbrooke, Quebec J1K2R1, Canada
| | - Gervais Soucy
- Department of Chemical and Biotechnological Engineering, Université de Sherbrooke, Sherbrooke, Quebec J1K2R1, Canada
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12
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Sikder P, Ferreira JA, Fakhrabadi EA, Kantorski KZ, Liberatore MW, Bottino MC, Bhaduri SB. Bioactive amorphous magnesium phosphate-polyetheretherketone composite filaments for 3D printing. Dent Mater 2020; 36:865-883. [PMID: 32451208 PMCID: PMC7359049 DOI: 10.1016/j.dental.2020.04.008] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 03/29/2020] [Accepted: 04/16/2020] [Indexed: 12/25/2022]
Abstract
OBJECTIVE The aim of this study was to develop bioactive and osseointegrable polyetheretherketone (PEEK)-based composite filaments melt-blended with novel amorphous magnesium phosphate (AMP) particles for 3D printing of dental and orthopedic implants. MATERIALS AND METHODS A series of materials and biological analyses of AMP-PEEK were performed. Thermal stability, thermogravimetric and differential scanning calorimetry curves of as-synthesized AMP were measured. Complex viscosity, elastic modulus and viscous modulus were determined using a rotational rheometer. In vitro bioactivity was analyzed using SBF immersion method. SEM, EDS and XRD were used to study the apatite-forming ability of the AMP-PEEK filaments. Mouse pre-osteoblasts (MC3T3-E1) were cultured and analyzed for cell viability, proliferation and gene expression. For in vivo analyses, bare PEEK was used as the control and 15AMP-PEEK was chosen based on its in vitro cell-related results. After 4 or 12 weeks, animals were euthanized, and the femurs were collected for micro-computed tomography (μ-CT) and histology. RESULTS The collected findings confirmed the homogeneous dispersion of AMP particles within the PEEK matrix with no phase degradation. Rheological studies demonstrated that AMP-PEEK composites are good candidates for 3D printing by exhibiting high zero-shear and low infinite-shear viscosities. In vitro results revealed enhanced bioactivity and superior pre-osteoblast cell function in the case of AMP-PEEK composites as compared to bare PEEK. In vivo analyses further corroborated the enhanced osseointegration capacity for AMP-PEEK implants. SIGNIFICANCE Collectively, the present investigation demonstrated that AMP-PEEK composite filaments can serve as feedstock for 3D printing of orthopedic and dental implants due to enhanced bioactivity and osseointegration capacity.
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Affiliation(s)
- Prabaha Sikder
- Department of Mechanical, Industrial and Manufacturing Engineering, University of Toledo, Toledo, OH 43606, USA
| | - Jessica A Ferreira
- Department of Cariology, Restorative Sciences and Endodontics, School of Dentistry, University of Michigan, Ann Arbor, MI 48109, USA
| | | | - Karla Z Kantorski
- Department of Cariology, Restorative Sciences and Endodontics, School of Dentistry, University of Michigan, Ann Arbor, MI 48109, USA; Post-Graduate Program in Oral Science (Periodontology Unit), School of Dentistry, Federal University of Santa Maria, Santa Maria, Rio Grande do Sul, Brazil
| | | | - Marco C Bottino
- Department of Cariology, Restorative Sciences and Endodontics, School of Dentistry, University of Michigan, Ann Arbor, MI 48109, USA.
| | - Sarit B Bhaduri
- Department of Mechanical, Industrial and Manufacturing Engineering, University of Toledo, Toledo, OH 43606, USA; EEC Division, Directorate of Engineering, The National Science Foundation, Alexandria, VA 22314, USA.
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