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Dobrzyńska-Mizera M, Dodda JM, Liu X, Knitter M, Oosterbeek RN, Salinas P, Pozo E, Ferreira AM, Sadiku ER. Engineering of Bioresorbable Polymers for Tissue Engineering and Drug Delivery Applications. Adv Healthc Mater 2024:e2401674. [PMID: 39233521 DOI: 10.1002/adhm.202401674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2024] [Revised: 08/15/2024] [Indexed: 09/06/2024]
Abstract
Herein, the recent advances in the development of resorbable polymeric-based biomaterials, their geometrical forms, resorption mechanisms, and their capabilities in various biomedical applications are critically reviewed. A comprehensive discussion of the engineering approaches for the fabrication of polymeric resorbable scaffolds for tissue engineering, drug delivery, surgical, cardiological, aesthetical, dental and cardiovascular applications, are also explained. Furthermore, to understand the internal structures of resorbable scaffolds, representative studies of their evaluation by medical imaging techniques, e.g., cardiac computer tomography, are succinctly highlighted. This approach provides crucial clinical insights which help to improve the materials' suitable and viable characteristics for them to meet the highly restrictive medical requirements. Finally, the aspects of the legal regulations and the associated challenges in translating research into desirable clinical and marketable materials of polymeric-based formulations, are presented.
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Affiliation(s)
- Monika Dobrzyńska-Mizera
- Institute of Materials Technology, Polymer Division, Poznan University of Technology, Poznan, Poland
| | - Jagan Mohan Dodda
- New Technologies - Research Centre (NTC), University of West Bohemia, Univerzitní 8, Pilsen, 30100, Czech Republic
| | - Xiaohua Liu
- Chemical and Biomedical Engineering Department, University of Missouri, 1030 Hill Street, Columbia, Missouri, 65211, USA
| | - Monika Knitter
- Institute of Materials Technology, Polymer Division, Poznan University of Technology, Poznan, Poland
| | - Reece N Oosterbeek
- Department of Engineering Science, University of Oxford, Parks Road, Oxford, OX1 3PJ, UK
| | - Pablo Salinas
- Department of Cardiology, Hospital Clínico San Carlos, Madrid, Spain
- Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), Madrid, Spain
| | - Eduardo Pozo
- Department of Cardiology, Hospital Clínico San Carlos, Madrid, Spain
- Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), Madrid, Spain
| | - Ana Marina Ferreira
- School of Engineering, Newcastle University, Newcastle upon Tyne, Newcastle, NE1 7RU, UK
| | - Emmanuel Rotimi Sadiku
- Tshwane University of Technology, Department of Chemical, Metallurgical and Materials Engineering, Polymer Division & Institute for Nano Engineering Research (INER), Pretoria West Campus, Pretoria, South Africa
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Maleki M, Karimi-Soflou R, Karkhaneh A. Raspberry-like PLA/PGS biodegradable microparticles with urethane linkages: Unlocking tailored release of magnesium ions and oxygen for bone tissue engineering. Int J Pharm 2024; 651:123760. [PMID: 38163525 DOI: 10.1016/j.ijpharm.2023.123760] [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: 07/13/2023] [Revised: 12/28/2023] [Accepted: 12/29/2023] [Indexed: 01/03/2024]
Abstract
Designing biodegradable microparticles with finely controlled release properties for tissue engineering systems remains a significant scientific challenge. This study introduces a novel approach by fabricating urethane-linked PLA/PGS microparticles loaded with magnesium peroxide. The microparticles offer potential applications in bone tissue engineering due to their ability to provide a controlled release of oxygen and magnesium ions while maintaining physiological pH. The PGS pre-polymer was synthesized via polycondensation and characterized using FTIR, 1H NMR, and GPC. Microparticle morphology transformed from smooth to raspberry-like upon incorporation of PGS, as observed by SEM. Microparticle size was tuned by varying PGS and PLA concentrations. FTIR analysis confirmed the successful formation of urethane links within the microparticles. MgO2-loaded PLA/PGS microparticles exhibited sustained release of dissolved oxygen and magnesium ions for 21 days while maintaining physiological pH better than PLA microparticles. Cell viability assays confirmed microparticle cytocompatibility, and ALP and Alizarin red assays demonstrated their ability to induce osteogenic differentiation. These findings highlight the potential of pH-controlled MgO2-loaded microparticles as an effective system for bone tissue engineering. In conclusion, this study presents a novel approach to designing biodegradable microparticles with adjustable release properties for bone tissue engineering. The urethane-based MgO2-loaded microparticles provide controlled release of oxygen and magnesium ions and regulate the environment's pH, making them a promising system for bone tissue engineering applications.
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Affiliation(s)
- Mina Maleki
- Department of Biomedical Engineering, Amirkabir University of Technology (Tehran Polytechnic), Iran
| | - Reza Karimi-Soflou
- Department of Biomedical Engineering, Amirkabir University of Technology (Tehran Polytechnic), Iran
| | - Akbar Karkhaneh
- Department of Biomedical Engineering, Amirkabir University of Technology (Tehran Polytechnic), Iran.
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Bakhshi R, Mohammadi-Zerankeshi M, Mehrabi-Dehdezi M, Alizadeh R, Labbaf S, Abachi P. Additive manufacturing of PLA-Mg composite scaffolds for hard tissue engineering applications. J Mech Behav Biomed Mater 2023; 138:105655. [PMID: 36621086 DOI: 10.1016/j.jmbbm.2023.105655] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2022] [Revised: 12/27/2022] [Accepted: 01/01/2023] [Indexed: 01/04/2023]
Abstract
Polylactic acid (PLA) is considered as a great option to be employed as 3D porous scaffold in hard tissue engineering applications owing to its excellent biocompatibility and processability. However, relatively weak mechanical properties and inappropriate biodegradability limit its extensive usage. In order to overcome the mentioned challenges, micrometric magnesium particles were incorporated into the PLA matrix by the fused deposition modeling (FDM) technique. The effects of various Mg contents (i.e., 2, 4, 6, 8 and 10 wt%) on the structural, thermal, rheological, mechanical, wettability, degradability characteristics and cellular behavior of the 3D porous PLA-Mg composite scaffolds were examined. The developed PLA-Mg composites exhibit an interconnected porous structure with a mostly uniform distribution of Mg particles in the PLA matrix. It was found that incorporation of Mg particles into the PLA matrix enhances the mechanical, physical, chemical and biological characteristics of PLA. The cell studies demonstrate that the PLA-6Mg composite scaffold provides the best cellular response in terms of cell atachment and viability. The obtained results in this investigation greatly suggest that the 3D-printed PLA-Mg composite scaffold is a promising candidate for hard tissue engineering applications.
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Affiliation(s)
- Rasoul Bakhshi
- Department of Materials Science and Engineering, Sharif University of Technology, Tehran, Iran
| | | | - Melika Mehrabi-Dehdezi
- Department of Materials Science and Engineering, Sharif University of Technology, Tehran, Iran
| | - Reza Alizadeh
- Department of Materials Science and Engineering, Sharif University of Technology, Tehran, Iran.
| | - Sheyda Labbaf
- Department of Materials Engineering, Isfahan University of Technology, Isfahan, 84156-83111, Iran
| | - Parvin Abachi
- Department of Materials Science and Engineering, Sharif University of Technology, Tehran, Iran
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Li H, Zhu X, Wang M, Zhao D, Li H, Yan J. Drug sustained release from degradable drug-loaded in-situ hydrogels in the posterior eye: a mechanistic model and analytical method. J Biomech 2022; 136:111052. [DOI: 10.1016/j.jbiomech.2022.111052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 02/10/2022] [Accepted: 02/28/2022] [Indexed: 11/28/2022]
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Chondroitin sulfate cross-linked three-dimensional tailored electrospun scaffolds for cartilage regeneration. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2022; 134:112643. [DOI: 10.1016/j.msec.2022.112643] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2021] [Revised: 12/09/2021] [Accepted: 01/02/2022] [Indexed: 01/11/2023]
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Oosterbeek RN, Zhang XC, Best SM, Cameron RE. A technique for improving dispersion within polymer-glass composites using polymer precipitation. J Mech Behav Biomed Mater 2021; 123:104767. [PMID: 34455140 DOI: 10.1016/j.jmbbm.2021.104767] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Revised: 08/05/2021] [Accepted: 08/08/2021] [Indexed: 11/30/2022]
Abstract
Particulate reinforcement of polymeric matrices is a powerful technique for tailoring the mechanical and degradation properties of bioresorbable implant materials. Dispersion of inorganic particles is critical to achieving optimal properties, however established techniques such as twin-screw extrusion or solvent casting can have significant drawbacks including excessive thermal degradation or particle agglomeration. We present a facile method for production of polymer-inorganic composites that reduces the time at elevated temperature and the time available for particle agglomeration. Glass slurry was added to a dissolved PLLA solution, and ethanol was added to precipitate polymer onto the glass particles. Characterisation of parts formed by subsequent micro-injection moulding of composite precipitate revealed a significant reduction in agglomeration, with d0.9 reduced from 170 to 43 μm. This drastically improved the ductility (ɛB) from 7% to 120%, without loss of strength or stiffness. The method is versatile and applicable to a wide range of polymer and filler materials.
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Affiliation(s)
- Reece N Oosterbeek
- Cambridge Centre for Medical Materials, Department of Materials Science and Metallurgy, University of Cambridge, Cambridge, United Kingdom.
| | - Xiang C Zhang
- Lucideon Ltd, Queens Road, Penkhull, Stoke-on-Trent, United Kingdom
| | - Serena M Best
- Cambridge Centre for Medical Materials, Department of Materials Science and Metallurgy, University of Cambridge, Cambridge, United Kingdom
| | - Ruth E Cameron
- Cambridge Centre for Medical Materials, Department of Materials Science and Metallurgy, University of Cambridge, Cambridge, United Kingdom.
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Coutinho IT, Maia-Obi LP, Champeau M. Aspirin-Loaded Polymeric Films for Drug Delivery Systems: Comparison between Soaking and Supercritical CO 2 Impregnation. Pharmaceutics 2021; 13:824. [PMID: 34199551 PMCID: PMC8229088 DOI: 10.3390/pharmaceutics13060824] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 05/28/2021] [Accepted: 05/28/2021] [Indexed: 12/11/2022] Open
Abstract
Polymeric implants loaded with drugs can overcome the disadvantages of oral or injection drug administration and deliver the drug locally. Several methods can load drugs into polymers. Herein, soaking and supercritical CO2 (scCO2) impregnation methods were employed to load aspirin into poly(l-lactic acid) (PLLA) and linear low-density polyethylene (LLDPE). Higher drug loadings (DL) were achieved with scCO2 impregnation compared to soaking and in a shorter time (3.4 ± 0.8 vs. 1.3 ± 0.4% for PLLA; and 0.4 ± 0.5 vs. 0.6 ± 0.5% for LLDPE), due to the higher swelling capacity of CO2. The higher affinity of aspirin explained the higher DL in PLLA than in LLDPE. Residual solvent was detected in LLDPE prepared by soaking, but within the FDA concentration limits. The solvents used in both methods acted as plasticizers and increased PLLA crystallinity. PLLA impregnated with aspirin exhibited faster hydrolysis in vitro due to the catalytic effect of aspirin. Finally, PLLA impregnated by soaking showed a burst release because of aspirin crystals on the PLLA surface, and released 100% of aspirin within 60 days, whereas the PLLA prepared with scCO2 released 60% after 74 days by diffusion and PLLA erosion. Hence, the scCO2 impregnation method is adequate for higher aspirin loadings and prolonged drug release.
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Affiliation(s)
| | | | - Mathilde Champeau
- Center of Engineering, Modeling and Applied Social Sciences, Federal University of ABC, Santo Andre 09210-580, Brazil; (I.T.C.); (L.P.M.-O.)
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Visan AI, Popescu-Pelin G, Socol G. Degradation Behavior of Polymers Used as Coating Materials for Drug Delivery-A Basic Review. Polymers (Basel) 2021; 13:1272. [PMID: 33919820 PMCID: PMC8070827 DOI: 10.3390/polym13081272] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Revised: 04/03/2021] [Accepted: 04/08/2021] [Indexed: 12/21/2022] Open
Abstract
The purpose of the work was to emphasize the main differences and similarities in the degradation mechanisms in the case of polymeric coatings compared with the bulk ones. Combined with the current background, this work reviews the properties of commonly utilized degradable polymers in drug delivery, the factors affecting degradation mechanism, testing methods while offering a retrospective on the evolution of the controlled release of biodegradable polymeric coatings. A literature survey on stability and degradation of different polymeric coatings, which were thoroughly evaluated by different techniques, e.g., polymer mass loss measurements, surface, structural and chemical analysis, was completed. Moreover, we analyzed some shortcomings of the degradation behavior of biopolymers in form of coatings and briefly proposed some solving directions to the main existing problems (e.g., improving measuring techniques resolution, elucidation of complete mathematical analysis of the different degradation mechanisms). Deep studies are still necessary on the dynamic changes which occur to biodegradable polymeric coatings which can help to envisage the future performance of synthesized films designed to be used as medical devices with application in drug delivery.
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Affiliation(s)
- Anita Ioana Visan
- Lasers Department, National Institute for Lasers, Plasma and Radiation Physics, 077190 Magurele, Ilfov, Romania;
| | | | - Gabriel Socol
- Lasers Department, National Institute for Lasers, Plasma and Radiation Physics, 077190 Magurele, Ilfov, Romania;
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Sayko R, Wang Z, Liang H, Becker ML, Dobrynin AV. Degradation of Block Copolymer Films Confined in Elastic Media: Molecular Dynamics Simulations. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c01795] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ryan Sayko
- Department of Chemistry, University of North Carolina, Chapel Hill, North Carolina 27599, United States
| | - Zilu Wang
- Department of Chemistry, University of North Carolina, Chapel Hill, North Carolina 27599, United States
| | - Heyi Liang
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, Illinois 60637, United States
| | - Matthew L. Becker
- Department of Chemistry, Duke University, Durham, North Carolina 27708, United States
| | - Andrey V. Dobrynin
- Department of Chemistry, University of North Carolina, Chapel Hill, North Carolina 27599, United States
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Naseem R, Zhao L, Eswaran SK, Willcock H. Characterization of biodegradable poly(
l
‐lactide) tube over accelerated degradation. POLYM ENG SCI 2020. [DOI: 10.1002/pen.25390] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Raasti Naseem
- Wolfson School of Mechanical, Electrical and Manufacturing Engineering Loughborough University Loughborough UK
| | - Liguo Zhao
- Wolfson School of Mechanical, Electrical and Manufacturing Engineering Loughborough University Loughborough UK
| | | | - Helen Willcock
- Department of Materials Loughborough University Loughborough UK
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