1
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Aarsen C, Liguori A, Mattsson R, Sipponen MH, Hakkarainen M. Designed to Degrade: Tailoring Polyesters for Circularity. Chem Rev 2024; 124:8473-8515. [PMID: 38936815 PMCID: PMC11240263 DOI: 10.1021/acs.chemrev.4c00032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2024] [Revised: 04/30/2024] [Accepted: 06/11/2024] [Indexed: 06/29/2024]
Abstract
A powerful toolbox is needed to turn the linear plastic economy into circular. Development of materials designed for mechanical recycling, chemical recycling, and/or biodegradation in targeted end-of-life environment are all necessary puzzle pieces in this process. Polyesters, with reversible ester bonds, are already forerunners in plastic circularity: poly(ethylene terephthalate) (PET) is the most recycled plastic material suitable for mechanical and chemical recycling, while common aliphatic polyesters are biodegradable under favorable conditions, such as industrial compost. However, this circular design needs to be further tailored for different end-of-life options to enable chemical recycling under greener conditions and/or rapid enough biodegradation even under less favorable environmental conditions. Here, we discuss molecular design of the polyester chain targeting enhancement of circularity by incorporation of more easily hydrolyzable ester bonds, additional dynamic bonds, or degradation catalyzing functional groups as part of the polyester chain. The utilization of polyester circularity to design replacement materials for current volume plastics is also reviewed as well as embedment of green catalysts, such as enzymes in biodegradable polyester matrices to facilitate the degradation process.
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Affiliation(s)
- Celine
V. Aarsen
- Department
of Fibre and Polymer Technology, KTH Royal
Institute of Technology, Teknikringen 58, 100 44 Stockholm, Sweden
| | - Anna Liguori
- Department
of Fibre and Polymer Technology, KTH Royal
Institute of Technology, Teknikringen 58, 100 44 Stockholm, Sweden
- Department
of Chemistry “G. Ciamician”, University of Bologna, Via Selmi 2, 40126 Bologna, Italy
| | - Rebecca Mattsson
- Department
of Fibre and Polymer Technology, KTH Royal
Institute of Technology, Teknikringen 58, 100 44 Stockholm, Sweden
| | - Mika H. Sipponen
- Department
of Materials and Environmental Chemistry, Stockholm University, Svante Arrhenius väg 16C, 106
91 Stockholm, Sweden
| | - Minna Hakkarainen
- Department
of Fibre and Polymer Technology, KTH Royal
Institute of Technology, Teknikringen 58, 100 44 Stockholm, Sweden
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2
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Patel R, Gómez-Cerezo MN, Huang H, Grøndahl L, Lu M. Degradation behaviour of porous poly(hydroxybutyrate-co-hydroxyvalerate) (PHBV) scaffolds in cell culture. Int J Biol Macromol 2024; 257:128644. [PMID: 38065444 DOI: 10.1016/j.ijbiomac.2023.128644] [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: 07/21/2023] [Revised: 11/16/2023] [Accepted: 12/04/2023] [Indexed: 01/27/2024]
Abstract
Exploring the degradation behaviour of biomaterials in a complex in vitro physiological environment can assist in predicting their performance in vivo, yet this aspect remains largely unexplored. In this study, the in vitro degradation over 12 weeks of porous poly(hydroxybutyrate-co-hydroxyvalerate) (PHBV) bone scaffolds in human osteoblast (hOB) culture was investigated. The objective was to evaluate how the presence of cells influenced both the degradation behaviour and mechanical stability of these scaffolds. The molecular weight (Mw) of the scaffolds decreased with increasing incubation time and the Mw reduction rate (6.2 ± 0.4 kg mol-1 week-1) was similar to that observed when incubated in phosphate buffered saline (PBS) solution, implying that the scaffolds underwent hydrolytic degradation in hOB culture. The mass of the scaffolds increased by 0.8 ± 0.2 % in the first 4 weeks, attributed to cells attachment and extracellular matrix (ECM) deposition including biomineralisation. During the first 8 weeks, the nominal compressive modulus, E⁎, of the scaffolds remained constant. However, it increased significantly from Week 8 to 12, with increments of 55 % and 42 % in normal and lateral directions, respectively, attributed to the reinforcement effect of cells, ECM and minerals attached on the surface of the scaffold. This study has highlighted, that while the use of PBS in degradation studies is suitable for evaluating Mw changes it cannot predict changes in mechanical properties to PHBV scaffolds in the presence of cells and culture media. Furthermore, the PHBV scaffolds had mechanical stability in cell culture for 12 weeks validating their suitability for tissue engineering applications.
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Affiliation(s)
- Rushabh Patel
- School of Mechanical and Mining Engineering, The University of Queensland, St Lucia, QLD 4072, Australia
| | - Maria Natividad Gómez-Cerezo
- Departamento de Química en Ciencias Farmacéuticas, Facultad de Farmacia, Universidad Complutense de Madrid, Instituto de Investigación Sanitaria Hospital, 12 de Octubre i+12, Plaza Ramón y Cajal s/n, 28040 Madrid, Spain
| | - Han Huang
- School of Mechanical and Mining Engineering, The University of Queensland, St Lucia, QLD 4072, Australia
| | - Lisbeth Grøndahl
- School of Chemistry and Molecular Biosciences, The University of Queensland, St Lucia, QLD 4072, Australia
| | - Mingyuan Lu
- School of Mechanical and Mining Engineering, The University of Queensland, St Lucia, QLD 4072, Australia.
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3
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Ng F, Nicoulin V, Peloso C, Curia S, Richard J, Lopez-Noriega A. In Vitro and In Vivo Hydrolytic Degradation Behaviors of a Drug-Delivery System Based on the Blend of PEG and PLA Copolymers. ACS APPLIED MATERIALS & INTERFACES 2023; 15:55495-55509. [PMID: 38011651 DOI: 10.1021/acsami.2c13141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2023]
Abstract
This paper presents the in vitro and in vivo degradation of BEPO, a marketed in situ forming depot technology used for the formulation of long-acting injectables. BEPO is composed of a solution of a blend of poly(ethylene glycol)-block-poly(lactic acid) (PEG-PLA) triblock and diblock in an organic solvent, where a therapeutic agent may be dissolved or suspended. Upon contact with an aqueous environment, the solvent diffuses and the polymers precipitate, entrapping the drug and forming a reservoir. Two representative BEPO compositions were subjected to a 3-month degradation study in vitro by immersion in phosphate-buffered saline at 37 °C and in vivo after subcutaneous injection in minipig. The material erosion rate, as a surrogate of the bioresorption, determined via the depot weight loss, changed substantially, depending on the composition and content of polymers within the test item. The swelling properties and internal morphology of depots were shown to be highly dependent on the solvent exchange rate during the precipitation step. Thermal analyses displayed an increase of the depot glass transition temperature over the degradation process, with no crystallinity observed at any stage. The chemical composition of degraded depots was determined by 1H NMR and gel permeation chromatography and demonstrated an enrichment in homopolymers, i.e., free PLA and (m)PEG, to the detriment of (m)PEG-PLA copolymers in both formulations. It was observed that the relative ratio of the degradants within the depot is driven by the initial polymer composition. Interestingly, in vitro and in vivo results showed very good qualitative consistency. Taken together, the outcomes from this study demonstrate that the different hydrolytic degradation behaviors of the BEPO compositions can be tuned by adjusting the polymer composition of the formulation.
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Affiliation(s)
- Feifei Ng
- MedinCell S.A., 3 Rue des Frères Lumière, 34830 Jacou, France
| | - Victor Nicoulin
- MedinCell S.A., 3 Rue des Frères Lumière, 34830 Jacou, France
| | | | - Silvio Curia
- MedinCell S.A., 3 Rue des Frères Lumière, 34830 Jacou, France
| | - Joël Richard
- MedinCell S.A., 3 Rue des Frères Lumière, 34830 Jacou, France
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4
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Vieira AFC, Da Silva EHP, Ribeiro ML. Numerical Approach to Simulate the Mechanical Behavior of Biodegradable Polymers during Erosion. Polymers (Basel) 2023; 15:polym15091979. [PMID: 37177128 PMCID: PMC10181274 DOI: 10.3390/polym15091979] [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: 03/03/2023] [Revised: 03/31/2023] [Accepted: 04/18/2023] [Indexed: 05/15/2023] Open
Abstract
Biodegradable polymers find applications in many market segments. The ability to meet mechanical requirements within a certain time range, after which it degrades and is naturally absorbed, can be used to produce short-term use products that can be easily disposable with less environmental impact. In the segment of medical devices used in regenerative medicine, these materials are used to produce temporary implants that are naturally assimilated by the human body, avoiding a removal surgery. However, the design of these temporary devices still presents great challenges, namely in the verification of the main requirement: the lifetime of the device, associated with the progressive loss of mechanical properties, until its complete erosion and assimilation. Thus, in this study, a numerical approach is proposed to simulate the polymeric device's mechanical behavior during its hydrolytic degradation by combining the hydrolysis kinetics, that depends on mechanical factors and promotes a decrease of molecular weight and consequent decrease of mechanical performance, and erosion, when molecular weight reaches a threshold value and the polymer becomes soluble and diffuses outward, resulting in mass loss and decreasing cross-sectional area, which also contributes to the mechanical performance reduction of the device. A phenomenological approach, using the combination of continuum-based hydrolytic damage for the evolution of mechanical properties that depends on the stress field and further removal of the degraded element (to simulate mass loss) was used. Both elastoplastic and hyperelastic constitutive models were applied on this study, where the material model parameters locally depend on the molecular weight.
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Affiliation(s)
- André F C Vieira
- Center for Mechanical and Aerospace Science and Technologies (C-MAST-UBI), Universidade da Beira Interior, R. Marquês D'Ávila e Bolama, 6201-001 Covilhã, Portugal
| | - Enio H P Da Silva
- Aeronautical Engineering Department, São Carlos School of Engineering, University of São Paulo, São Carlos 13563-120, SP, Brazil
| | - Marcelo L Ribeiro
- Aeronautical Engineering Department, São Carlos School of Engineering, University of São Paulo, São Carlos 13563-120, SP, Brazil
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5
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Waterkotte T, He X, Wanasathop A, Li SK, Park YC. Long-Term Antibody Release Polycaprolactone Capsule and the Release Kinetics in Natural and Accelerated Degradation. ACS Biomater Sci Eng 2022; 8:4428-4438. [PMID: 36170673 DOI: 10.1021/acsbiomaterials.2c00808] [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] [Indexed: 11/30/2022]
Abstract
Although therapy using monoclonal antibodies (mAbs) has been steadily successful over the last 20 years, the means of delivery of mAbs has not been optimized, especially for long-term delivery. Frequent injections or infusions have been the current standard of care. In this study, we have developed a long-term antibody biodegradable implant using a porous polycaprolactone (PCL) capsule. It released bevacizumab (Bev) slowly for 8 months to date. The Bev release kinetics fit a drug release model with experimental data of the diffusion coefficient and partition coefficient through the polymer capsule. Since screening drug release profiles for the long term (>6 months) is time consuming, an accelerated degradation method was used after validating the characteristics of the PCL capsule in natural and accelerated degradation conditions. The correlation of the time period between natural and accelerated degradation was determined. Overall, the study suggests that mAbs can be released from a porous PCL capsule without an effect of the polymer degradation over a long period (∼6 months) and the long-term release kinetics can be determined by the accelerated degradation within 14 days.
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Affiliation(s)
- Thomas Waterkotte
- Department of Chemical & Environmental Engineering, University of Cincinnati, 2901 Woodside Dr., Cincinnati, Ohio 45221, United States
| | - Xingyu He
- Department of Chemical & Environmental Engineering, University of Cincinnati, 2901 Woodside Dr., Cincinnati, Ohio 45221, United States
| | - Apipa Wanasathop
- College of Pharmacy, University of Cincinnati, 3255 Eden Ave, Cincinnati, Ohio 45229, United States
| | - S Kevin Li
- College of Pharmacy, University of Cincinnati, 3255 Eden Ave, Cincinnati, Ohio 45229, United States
| | - Yoonjee C Park
- Department of Chemical & Environmental Engineering, University of Cincinnati, 2901 Woodside Dr., Cincinnati, Ohio 45221, United States
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6
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Tortorici M, Petersen A, Duda GN, Checa S. The Degradation of Synthetic Polymeric Scaffolds With Strut-like Architecture Influences the Mechanics-dependent Repair Process of an Osteochondral Defect in Silico. Front Bioeng Biotechnol 2022; 10:846665. [PMID: 35360392 PMCID: PMC8960607 DOI: 10.3389/fbioe.2022.846665] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Accepted: 02/21/2022] [Indexed: 11/13/2022] Open
Abstract
Current clinical treatments of osteochondral defects in articulating joints are frequently not successful in restoring articular surfaces. Novel scaffold-based tissue engineering strategies may help to improve current treatment options and foster a true regeneration of articulating structures. A frequently desired property of scaffolds is their ability to degrade over time and allow a full restoration of tissue and function. However, it remains largely unknown how scaffold degradation influences the mechanical stability of the tissue in a defect region and, in turn, the regenerative process. Such differing goals–supporting regeneration by degrading its own structure–can hardly be analyzed for tissue engineered constructs in clinical trials and in vivo preclinical experiments. Using an in silico analysis, we investigated the degradation-induced modifications in material and architectural properties of a scaffold with strut-like architecture over the healing course and their influence on the mechanics-dependent tissue formation in osteochondral defects. The repair outcome greatly varied depending on the degradation modality, i.e. surface erosion or bulk degradation with and without autocatalysis, and of the degradation speed, i.e. faster, equal or slower than the expected repair time. Bulk degradation with autocatalysis, independently of degradation speed, caused the mechanical failure of the scaffold prior to osteochondral defect repair and was thereby deemed inappropriate for further application. On the other hand, scaffolds with strut-like architecture degrading by both surface erosion and bulk degradation with slow degradation speed resulted in comparably good repair outcomes, thereby indicating such degradation modalities as favorable for the application in osteochondral defects.
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7
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Wang D, Wang X, Huang L, Pan Z, Liu K, Du B, Xue Y, Li B, Zhang Y, Wang H, Li D, Sun H. Unraveling an Innate Mechanism of Pathological Mineralization-Regulated Inflammation by a Nanobiomimetic System. Adv Healthc Mater 2021; 10:e2101586. [PMID: 34601825 DOI: 10.1002/adhm.202101586] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Revised: 09/15/2021] [Indexed: 12/18/2022]
Abstract
Pathological mineralization (PTM) often occurs under inflammation and affects the prognosis of diseases, such as atherosclerosis and cancers. However, how the PTM impacts inflammation has not been well explored. Herein, poly lactic-co-glycolic acid (PLGA)/gelatin/hydroxyapatite (HA) electrospun nanofibers are rationally designed as an ideal PTM microenvironment biomimetic system for unraveling the role of PTM on inflammation. The results demonstrate that the inflammatory response decreases continuously during the process of mineralization. When mature macromineralization forms, the inflammation almost completely disappears. Mechanistically, the PTM formation is mediated by matrix proteins, local high calcium, and cell debris (nuclei), or actively regulated by the lysosomal/plasma membrane components secreted by macrophages. These inflammatory inducible factors (calcium, cell debris, etc.) can be "buried" through PTM process, resulting in reduced immune responses. Overall, the present study demonstrates that PTM is an innate mechanism of inflammation subsidence, providing valuable insight into understanding the action of mineralization on inflammation.
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Affiliation(s)
- Dongyang Wang
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Hospital of Stomatology, Jilin University, 763 Heguang Road, Changchun, Jilin, 130021, P. R. China
| | - Xiaomeng Wang
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Hospital of Stomatology, Jilin University, 763 Heguang Road, Changchun, Jilin, 130021, P. R. China
| | - Lei Huang
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Hospital of Stomatology, Jilin University, 763 Heguang Road, Changchun, Jilin, 130021, P. R. China
| | - Ziyi Pan
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Hospital of Stomatology, Jilin University, 763 Heguang Road, Changchun, Jilin, 130021, P. R. China
| | - Kexuan Liu
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Hospital of Stomatology, Jilin University, 763 Heguang Road, Changchun, Jilin, 130021, P. R. China
| | - Beibei Du
- Department of Cardiology, China-Japan Union Hospital of Jilin University, No. 126 Xiantai Avenue, Changchun, Jilin, 130033, P. R. China
| | - Ying Xue
- HOOKE Instruments Ltd., 77 Yingkou Road, Changchun, Jilin, 130033, P. R. China
| | - Bei Li
- HOOKE Instruments Ltd., 77 Yingkou Road, Changchun, Jilin, 130033, P. R. China
- The State Key Lab of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, CAS, 3888 East Nanhu Road, Changchun, Jilin, 130033, P. R. China
| | - Yuan Zhang
- Department of Anesthesiology, The First Hospital of Jilin University, 71 Xinmin Street, Changchun, Jilin, 130021, P. R. China
| | - Huan Wang
- State Key Laboratory of Rare Earth Resources Utilization and Laboratory of Chemical Biology, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun, Jilin, 130022, P. R. China
| | - Daowei Li
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Hospital of Stomatology, Jilin University, 763 Heguang Road, Changchun, Jilin, 130021, P. R. China
| | - Hongchen Sun
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Hospital of Stomatology, Jilin University, 763 Heguang Road, Changchun, Jilin, 130021, P. R. China
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8
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Miao Y, Cui H, Dong Z, Ouyang Y, Li Y, Huang Q, Wang Z. Structural Evolution of Polyglycolide and Poly(glycolide -co-lactide) Fibers during In Vitro Degradation with Different Heat-Setting Temperatures. ACS OMEGA 2021; 6:29254-29266. [PMID: 34746613 PMCID: PMC8567347 DOI: 10.1021/acsomega.1c04974] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Accepted: 10/05/2021] [Indexed: 06/13/2023]
Abstract
The structural evolution of polyglycolide (PGA) and poly(glycolide-co-lactide) (P(GA-co-LA)) with 8% LA content fibers with different heat-setting temperatures was investigated during in vitro degradation using WAXD, SAXS, and mechanical property tests. It was found that the PGA fiber was more susceptible to the degradation process than the P(GA-co-LA) fiber and a higher heat-setting temperature reduced the degradation rate of the two samples. The weight and mechanical properties of the samples showed a gradual decrease during degradation. We proposed that the degradation of PGA and P(GA-co-LA) fibers proceeded in four stages. A continuous increase in crystallinity during the early stage of degradation and a gradual decline during the later period indicated that preferential hydrolytic degradation occurred in the amorphous regions, followed by a further degradation in the crystalline regions. The cleavage-induced crystallization occurred during the later stage of degradation, contributing to an appreciable decrease in the long period and lamellar thickness of both PGA and P(GA-co-LA) samples. The introduction of LA units into the PGA skeleton reduced the difference in the degradation rate between the crystalline and amorphous regions, and they were simultaneously degraded in the early stage of degradation, leading to a degradation mechanism different from that of the PGA fiber.
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Affiliation(s)
- Yushuang Miao
- Ningbo
Key Laboratory of Specialty Polymers, School of Materials Science
and Chemical Engineering, Ningbo University, Ningbo 315211, China
| | | | - Zhimin Dong
- Ningbo
Key Laboratory of Specialty Polymers, School of Materials Science
and Chemical Engineering, Ningbo University, Ningbo 315211, China
| | - Yi Ouyang
- Department
of Radiation Oncology & State Key Laboratory of Oncology in South
China, Sun Yat-sen University Cancer Center, 651 Dongfeng East Road, Guangzhou 510060, China
| | - Yiguo Li
- Ningbo
Key Laboratory of Specialty Polymers, School of Materials Science
and Chemical Engineering, Ningbo University, Ningbo 315211, China
| | - Qing Huang
- China
Textile Academy, Beijing 100025, China
| | - Zongbao Wang
- Ningbo
Key Laboratory of Specialty Polymers, School of Materials Science
and Chemical Engineering, Ningbo University, Ningbo 315211, China
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Zhang Y, Liang H, Luo Q, Chen J, Zhao N, Gao W, Pu Y, He B, Xie J. In vivo inducing collagen regeneration of biodegradable polymer microspheres. Regen Biomater 2021; 8:rbab042. [PMID: 34408912 PMCID: PMC8364987 DOI: 10.1093/rb/rbab042] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 07/01/2021] [Accepted: 07/08/2021] [Indexed: 12/26/2022] Open
Abstract
Biodegradable polymer particles have been used as dermal fillers for pre-clinical and clinical trials. The impact of material properties of polymers is very important to develop products for aesthetic medicine such as dermal fillers. Herein, eight biodegradable polymers with different molecular weights, chemical compositions or hydrophilic-hydrophobic properties were prepared and characterized for systematical study for aesthetic medicine applications. Polymer microspheres with 20-100 μm were prepared. The in vitro degradation study showed that poly (L-lactic-co-glycolic acid) 75/25 microspheres degraded the fastest, whereas poly (L-lactic acid) (PLLA) microspheres with intrinsic viscosity of 6.89 ([η] = 6.89) with the highest molecular weight showed the slowest degradation rate. After these microspheres were fabricated dermal fillers according to the formula of Sculptra®, they were injected subcutaneously into the back skin of rabbits. In vivo results demonstrated that the degradation rate of microspheres strongly correlated with the foreign body reaction and collagen regeneration was induced by microspheres. The microspheres with faster degradation rate induced inflammatory response and the collagen regeneration maintained in shorter time. PLLA ([η] = 3.80) microsphere with a moderate molecular weight and degradation rate could strongly regenerate Type I and III collagen to maintain a long-term aesthetic medicine effect. These properties of size, morphology and degradation behavior would influence the foreign body reaction and collagen regeneration.
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Affiliation(s)
- Yixin Zhang
- School of Smart Health, Chongqing College of Electronic Engineering, Chongqing 401331, China
| | - Hanwen Liang
- School of Laboratory Medicine, Sichuan Provincial Engineering Laboratory for Prevention and Control Technology of Veterinary Drug Residue in Animal-origin Food, Chengdu Medical College, Chengdu 610500, China
| | - Qian Luo
- School of Laboratory Medicine, Sichuan Provincial Engineering Laboratory for Prevention and Control Technology of Veterinary Drug Residue in Animal-origin Food, Chengdu Medical College, Chengdu 610500, China
| | - Jianlin Chen
- School of Laboratory Medicine, Sichuan Provincial Engineering Laboratory for Prevention and Control Technology of Veterinary Drug Residue in Animal-origin Food, Chengdu Medical College, Chengdu 610500, China
| | - Nan Zhao
- Puliyan (Nanjing) Medical Science & Technology Co. LTD, Nanjing 211500, China
| | - Wenxia Gao
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325027, China
| | - Yuji Pu
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, China
| | - Bin He
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, China
| | - Jing Xie
- Department of Stomatology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China
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10
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He Z, Liu Y, Liu X, Sun Y, Zhao Q, Liu L, Zhu Z, Luo E. Smart Porous Scaffold Promotes Peri-Implant Osteogenesis under the Periosteum. ACS Biomater Sci Eng 2020; 6:6321-6330. [PMID: 33449673 DOI: 10.1021/acsbiomaterials.0c00956] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Background: Adequate peri-implant bone mass and bone quality are essential factors to ensure the initial stability of the implant and success of implant operation. In clinical settings, the lack of bone mass often restricts the implant operation. In this study, we fabricated a smart porous scaffold with a shape memory function and investigated whether it could promote peri-implant osteogenesis under the periosteum. Methods: A porous shape memory polymer (SMP) scaffold was fabricated and its shape memory function, mechanical properties, and degradation rate were tested in vitro. Moreover, the scaffold was implanted in the mandible of rabbits to evaluate its efficacy to promote peri-implant osteogenesis in the periosteum and enhance the initial stability of the implant. Histological, micro-CT, and biomechanical analyses were carried out for further verification. Results: The SMP scaffold has a good shape memory function and biocompatibility in vitro. In vivo experiments demonstrated that the SMP scaffold could recover to its original shape after implantation to create a small gap in the periosteum. After 12 weeks, the scaffold was gradually replaced by a newly formed bone, and the stability of the implant increased when it implanted with the scaffold. Conclusion: The present study indicates that the SMP scaffolds have a good shape memory function and could enhance peri-implant bone formation under the periosteum. The SMP scaffold provides a clinical potential candidate for bone tissue engineering under the periosteum.
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Affiliation(s)
- Ze He
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases Dept. of Oral and Maxillofacial Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, P. R. China
| | - Yao Liu
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases Dept. of Oral and Maxillofacial Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, P. R. China
| | - Xian Liu
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases Dept. of Oral and Maxillofacial Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, P. R. China
| | - Yue Sun
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases Dept. of Oral and Maxillofacial Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, P. R. China
| | - Qiucheng Zhao
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases Dept. of Oral and Maxillofacial Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, P. R. China
| | - Linan Liu
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases Dept. of Oral and Maxillofacial Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, P. R. China
| | - Zhaokun Zhu
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases Dept. of Oral and Maxillofacial Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, P. R. China
| | - En Luo
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases Dept. of Oral and Maxillofacial Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, P. R. China
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11
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Nguyen VP, Yoo J, Lee JY, Chung JJ, Hwang JH, Jung Y, Lee SM. Enhanced Mechanical Stability and Biodegradability of Ti-Infiltrated Polylactide. ACS APPLIED MATERIALS & INTERFACES 2020; 12:43501-43512. [PMID: 32893625 DOI: 10.1021/acsami.0c13246] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Biodegradable polymers have been often used in place of conventional nondegradable polymers for industrial and medical applications. In particular, polylactide (PLA) has been regarded as a popular ecofriendly plastic and has many advantages like good biocompatibility and processability. Yet, it still has some drawbacks in mechanical properties. Here, we prepared Ti-infiltrated PLA by mimicking the gelatinous jaw of a seaworm whose mechanical properties are toggled up and down by the tiny amount of metal ions, expecting to prepare a new type of alternative. Ti induced significant chemical and microstructural changes in the PLA, which led to a notable improvement in the mechanical properties as compared to the neat PLA. The Ti-infiltrated PLA exhibited high resistance to rapid degradation. More importantly, the toxicity assessment demonstrated that the resulting PLA is still biocompatible and nontoxic. Consequently, we proved that the Ti-infiltrated PLA has high mechanical properties comparable to conventional nondegradable polymers and good biocompatibility as well as delayed biodegradability. We anticipate the current Ti-infiltrated PLA to be an ecofriendly replacement of some conventional plastics, which helps preserve a green environment.
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Affiliation(s)
- Viet Phuong Nguyen
- Nanomechatronics, Korea University of Science and Technology (UST), Daejeon 34113, Republic of Korea
- Department of Nanomechanics, Korea Institute of Machinery and Materials (KIMM), Daejeon 34103, Republic of Korea
| | - Jin Yoo
- Center for Biomaterials, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea
| | - Ju Young Lee
- Animal Model Research Group, Jeonbuk Department of Inhalation Research, Korea Institute of Toxicology (KIT), Jeongeup 53212, Jeollabuk-do, Republic of Korea
- Division of Human and Environmental toxicology, Korea University of Science and Technology (UST), Daejeon 34113, Republic of Korea
| | - Justin J Chung
- Center for Biomaterials, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea
| | - Jeong Ho Hwang
- Animal Model Research Group, Jeonbuk Department of Inhalation Research, Korea Institute of Toxicology (KIT), Jeongeup 53212, Jeollabuk-do, Republic of Korea
| | - Youngmee Jung
- Center for Biomaterials, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea
- School of Electrical and Electronic Engineering, Yonsei University, Seoul 03722, Republic of Korea
| | - Seung-Mo Lee
- Nanomechatronics, Korea University of Science and Technology (UST), Daejeon 34113, Republic of Korea
- Department of Nanomechanics, Korea Institute of Machinery and Materials (KIMM), Daejeon 34103, Republic of Korea
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12
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Golubeva EN, Chumakova NA. Spin Probe Method for Diagnostics of Polyester Porous Matrixes Formed in Supercritical Carbon Dioxide (Review). RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY B 2020. [DOI: 10.1134/s1990793119070078] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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13
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Qian Y, Yuan WE, Cheng Y, Yang Y, Qu X, Fan C. Concentrically Integrative Bioassembly of a Three-Dimensional Black Phosphorus Nanoscaffold for Restoring Neurogenesis, Angiogenesis, and Immune Homeostasis. NANO LETTERS 2019; 19:8990-9001. [PMID: 31790262 DOI: 10.1021/acs.nanolett.9b03980] [Citation(s) in RCA: 82] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Black phosphorus is well known for its excellent electromechanical properties. Although it has previously been used for therapeutic drug delivery in cancer, it has never been applied as an electroactive polymer for post-trauma tissue regeneration (e.g., in cardiac muscles and neurons). The major concern currently preventing such applications is its controversial biosafety profile in vivo. Here, we demonstrate the production of a concentrically integrative layer-by-layer bioassembled black phosphorus nanoscaffold. This scaffold has remarkable electrical conductivity, permitting smooth release into the surrounding microenvironment. We confirmed that, under mild oxidative stress, our black phosphorus nanoscaffold induced angiogenesis and neurogenesis and stimulated calcium-dependent axon regrowth and remyelination. Long-term in vivo implantation of this nanoscaffold during severe neurological defect regeneration induced negligible toxicity levels. These results provide new insight into the regenerative capability of manufactured 3D scaffolds using neuroengineered 2D black phosphorus nanomaterials.
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Affiliation(s)
- Yun Qian
- Department of Orthopedics , Shanghai Jiao Tong University Affiliated Sixth People's Hospital , Shanghai 200233 , China
| | - Wei-En Yuan
- Engineering Research Center of Cell & Therapeutic Antibody, Ministry of Education, School of Pharmacy , Shanghai Jiao Tong University , Shanghai 200240 , China
| | - Yuan Cheng
- Engineering Research Center of Cell & Therapeutic Antibody, Ministry of Education, School of Pharmacy , Shanghai Jiao Tong University , Shanghai 200240 , China
| | - Yunqi Yang
- Engineering Research Center of Cell & Therapeutic Antibody, Ministry of Education, School of Pharmacy , Shanghai Jiao Tong University , Shanghai 200240 , China
- Department of Mechanical Engineering and Materials Science , Duke University , 144 Hudson Hall, Box 90300, Durham , North Carolina 27708 , United States
| | - Xinhua Qu
- Department of Bone and Joint Surgery, Renji Hospital, School of Medicine , Shanghai Jiao Tong University School of Medicine , Shanghai , China
| | - Cunyi Fan
- Department of Orthopedics , Shanghai Jiao Tong University Affiliated Sixth People's Hospital , Shanghai 200233 , China
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14
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Abstract
BACKGROUND Orbital fractures are one of the most common sequelae of facial trauma. OBJECTIVE The objective of this study was to summarize published data for resorbable implants in orbital reconstruction, including polymer composition, degradation characteristics, osteoconductivity, and complications such as enophthalmos, diplopia, and peri-implant inflammation. A literature search of the National Library of Medicine was performed via PubMed using the keyword resorbable orbital implant. A total of 27 studies were reviewed. Strength of data was assessed according to the Oxford Centre criteria. RESULTS Most commercially available implants provide adequate tensile strength for up to 6 months (with the exception of polydioxanone, which loses strength within 1 month, and poly(D,L-lactide) within 3 months). This is sufficient for the isolated orbital floor or medial wall (tensile strength, ~300 MPa) but insufficient for reconstruction of load-bearing areas (eg, the inferior orbital rim with tensile strength of ~1.2 GPa). Thicker products (>1 mm) have increased risk for delayed inflammation than thinner products. Postoperative complications including delayed inflammation (0%-9%), eyelid malposition (0%-5%), enophthalmos (5%-16%), diplopia (0%-16%), infection (0%-2%), and infraorbital nerve hypesthesia (2%-18%) are variably distributed across implants with several notable exceptions: poly(L-lactide) has an increased risk of delayed inflammation, and polydioxanone has a risk of delayed enophthalmos and hematoma. CONCLUSIONS Resorbable implants are suitable for isolated medial wall or floor fractures with intact bony buttresses and function as a barrier rather than a load-bearing support.
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15
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Often neglected: PLGA/PLA swelling orchestrates drug release: HME implants. J Control Release 2019; 306:97-107. [DOI: 10.1016/j.jconrel.2019.05.039] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2019] [Revised: 05/13/2019] [Accepted: 05/26/2019] [Indexed: 11/22/2022]
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16
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Henry SJ, Barrett SE, Forster SP, Teller RS, Yang Z, Li L, Mackey MA, Doto GJ, Ruth MP, Tsuchiya T, Klein LJ, Gindy ME. Exploration of long-acting implant formulations of hepatitis B drug entecavir. Eur J Pharm Sci 2019; 136:104958. [PMID: 31212018 DOI: 10.1016/j.ejps.2019.104958] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Revised: 06/13/2019] [Accepted: 06/14/2019] [Indexed: 12/01/2022]
Abstract
Alternative formulations of entecavir, a once daily oral hepatitis B antiretroviral, may improve treatment adherence by patients. We explored the use of biocompatible polymers to control entecavir dissolution in two formats suitable for subcutaneous implantation. Hot melt extrudates were prepared by extruding entecavir-polymer blends at specified weight ratios. Dip-coated tablets were prepared by compressing entecavir in a multi-tip tooling. Tablets were dip-coated in solutions of polymer and dried. In rodents, entecavir-poly(caprolactone) extrudates demonstrated >180 days of continuous drug release, although below the estimated efficacious target input rate. Drug pharmacokinetic profiles were tunable by varying the polymer employed and implant format. The rank order trends of drug input rates observed in vitro were observed in vivo in the detected plasma concentrations of entecavir. In all dose groups entecavir was not tolerated locally at the site of administration where adverse event severity correlated with drug input rate. These polymer-based implantable formats have applicability to long-acting formulations of high solubility compounds beyond entecavir.
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Affiliation(s)
- Steven J Henry
- Pharmaceutical Sciences, Merck & Co., Inc., 770 Sumneytown Pike, West Point, PA 19486, USA
| | - Stephanie E Barrett
- Pharmaceutical Sciences, Merck & Co., Inc., 770 Sumneytown Pike, West Point, PA 19486, USA.
| | - Seth P Forster
- Pharmaceutical Sciences, Merck & Co., Inc., 770 Sumneytown Pike, West Point, PA 19486, USA
| | - Ryan S Teller
- Pharmaceutical Sciences, Merck & Co., Inc., 770 Sumneytown Pike, West Point, PA 19486, USA
| | - Zhen Yang
- Pharmaceutical Sciences, Merck & Co., Inc., 770 Sumneytown Pike, West Point, PA 19486, USA
| | - Li Li
- Pharmaceutical Sciences, Merck & Co., Inc., 770 Sumneytown Pike, West Point, PA 19486, USA
| | - Megan A Mackey
- Pharmaceutical Sciences, Merck & Co., Inc., 770 Sumneytown Pike, West Point, PA 19486, USA
| | - Gregory J Doto
- Safety Assessment and Laboratory Animal Resources (SALAR), Merck & Co., Inc., 770 Sumneytown Pike, West Point, PA 19486, USA
| | - Michael P Ruth
- Safety Assessment and Laboratory Animal Resources (SALAR), Merck & Co., Inc., 770 Sumneytown Pike, West Point, PA 19486, USA
| | - Takayuki Tsuchiya
- Safety Assessment and Laboratory Animal Resources (SALAR), Merck & Co., Inc., 770 Sumneytown Pike, West Point, PA 19486, USA
| | - Lee J Klein
- Pharmaceutical Sciences, Merck & Co., Inc., 770 Sumneytown Pike, West Point, PA 19486, USA
| | - Marian E Gindy
- Pharmaceutical Sciences, Merck & Co., Inc., 770 Sumneytown Pike, West Point, PA 19486, USA
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17
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Ayyoob M, Kim YJ. Effect of Chemical Composition Variant and Oxygen Plasma Treatments on the Wettability of PLGA Thin Films, Synthesized by Direct Copolycondensation. Polymers (Basel) 2018; 10:polym10101132. [PMID: 30961057 PMCID: PMC6403949 DOI: 10.3390/polym10101132] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Revised: 10/08/2018] [Accepted: 10/08/2018] [Indexed: 12/21/2022] Open
Abstract
The synthesis of high molecular weight poly (lactic-co-glycolic) acid (PLGA) copolymers via direct condensation copolymerization is itself a challenging task. Moreover, some of the characteristic properties of polylactide (PLA)-based biomaterials, such as brittleness, hydrophobicity, and longer degradation time, are not suitable for certain biomedical applications. However, such properties can be altered by the copolymerization of PLA with other biodegradable monomers, such as glycolic acid. A series of high molecular weight PLGAs were synthesized through the direct condensation copolymerization of lactic and glycolic acids, starting from 0 to 50 mol% of glycolic acid, and the wettability of its films was monitored as a function of the feed molar ratio. Copolymerization was performed in the presence of a bi-catalytic system using stannous chloride dihydrate and methanesulfonic acid (MSA). The viscosity average molecular weight of the resulting PLGA was in the range of 80k to 135k g/mol. The PLGA films were prepared using the solvent casting technique, and were treated with oxygen plasma for 2 min. The water contact angle of the PLGA films was determined before and after the oxygen plasma treatments, and it was observed that the wettability increased with an increase in the glycolic acid contents, however, the manifolds increased after 2 min of oxygen plasma treatments.
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Affiliation(s)
- Muhammad Ayyoob
- Department of Chemical Engineering, Sungkyunkwan University, (16419) 2066 Seobu-Ro, Jangan-Gu, Suwon-Si, Gyeonggi-Do 16419, Korea.
| | - Young Jun Kim
- Department of Chemical Engineering, Sungkyunkwan University, (16419) 2066 Seobu-Ro, Jangan-Gu, Suwon-Si, Gyeonggi-Do 16419, Korea.
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18
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Abstract
Strategies to refine the degradation behavior of polyester biomaterials, particularly to overcome the limitations of slow hydrolytic degradation, would broaden their utility. Herein, we examine the complexities of polyester degradation behavior, its assessment and strategies for refinement. The factors governing polyester degradation are strikingly complex. In addition to the half-life of the hydrolytically-labile bond, a series of interdependent material properties must be considered. Thus, methods used to characterize such material properties, both before and during degradation, must be carefully selected. Assessment of degradation behavior is further complicated by the variability of reported test protocols and the need for accelerated rather than real-time in vitro testing conditions. Ultimately, through better control of degradation behavior and correlation of in vitro, simulated degradation to that observed in vivo, the development of superior devices prepared with polyester biomaterials may be achieved.
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Affiliation(s)
- Lindsay N. Woodard
- Department of Biomedical Engineering, Texas A&M University, College Station, Texas 77843, United States
| | - Melissa A. Grunlan
- Department of Biomedical Engineering, Texas A&M University, College Station, Texas 77843, United States
- Department of Materials Science and Engineering, Texas A&M University, College Station, Texas 77843, United States
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, United States
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19
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Mourouzis P, Samanidou V, Koulaouzidou EA, Palaghias G. HPLC study for evaluating the significance of pH in the inhibiting effect of phosphate buffer on the leaching pattern of resin composites. J LIQ CHROMATOGR R T 2018. [DOI: 10.1080/10826076.2018.1441157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Petros Mourouzis
- Division of Dental Tissues Pathology and Therapeutics, Department of Operative Dentistry and Basic Dental Sciences, Faculty of Dentistry, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Victoria Samanidou
- Department of Chemistry, Laboratory of Analytical Chemistry, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Elisabeth A. Koulaouzidou
- Division of Dental Tissues Pathology and Therapeutics, Department of Operative Dentistry and Basic Dental Sciences, Faculty of Dentistry, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Georgios Palaghias
- Division of Dental Tissues Pathology and Therapeutics, Department of Operative Dentistry and Basic Dental Sciences, Faculty of Dentistry, Aristotle University of Thessaloniki, Thessaloniki, Greece
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20
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Soltani Dehnavi S, Mehdikhani M, Rafienia M, Bonakdar S. Preparation and in vitro evaluation of polycaprolactone/PEG/bioactive glass nanopowders nanocomposite membranes for GTR/GBR applications. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 90:236-247. [PMID: 29853087 DOI: 10.1016/j.msec.2018.04.065] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2017] [Revised: 12/24/2017] [Accepted: 04/20/2018] [Indexed: 12/20/2022]
Abstract
In the present study, nanocomposite membranes are investigated using poly-ε-caprolactone (PCL), polyethylene glycol (PEG) and bioactive glass nanopowders (BGs) synthesized via solvent casting method with different reinforcement rates of BGs consisting of 3, 5 and 7 wt% for regenerating the periodontal tissue in vitro. These prepared membranes were evaluated by a vast range of essential tests; including Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), Transmition-electron microscopy (TEM), tensile testing before and after soaking in PBS solution, degradation and contact angle assessments as well as cell culture assays. In spite of the fact that the percentage of Cu incorporated into BGs was trivial, this negligible amount exerted major cytotoxic impact upon cells during in vitro cell tests. According to the results, the blended-membrane contained 7 wt% copper-free BGs indicated optimum characteristics including satisfactory mechanical and biodegradation features, more wettable surface, higher proliferation rates of adipose-derived stem cells (ADSCs), superior ALP activity and brilliant bone mineralization capacity which was confirmed by Alizarin red assay. As a consequence, it can be used as a desirable candidate for guided tissue/bone regeneration (GTR/GBR) to accelerate bone tissue healing.
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Affiliation(s)
- Shiva Soltani Dehnavi
- Department of New Science and Technology Campus (Biomaterial Group), Semnan University, Semnan 35131-19111, Iran
| | - Mehdi Mehdikhani
- Department of Biomedical Engineering, Faculty of Engineering, University of Isfahan, Isfahan 81746-13441, Iran.
| | - Mohammad Rafienia
- Biosensor Research Center (BRC), Department of Advanced Medical Technology, Isfahan University of Medical Sciences (IUMS), Isfahan, Iran
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21
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Independent Evaluation of Medical-Grade Bioresorbable Filaments for Fused Deposition Modelling/Fused Filament Fabrication of Tissue Engineered Constructs. Polymers (Basel) 2018; 10:polym10010040. [PMID: 30966077 PMCID: PMC6414835 DOI: 10.3390/polym10010040] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2017] [Revised: 12/29/2017] [Accepted: 12/31/2017] [Indexed: 11/17/2022] Open
Abstract
Three-dimensional printing/additive manufacturing (3DP/AM) for tissue engineering and regenerative medicine (TE/RM) applications is a multifaceted research area encompassing biology, material science, engineering, and the clinical sciences. Although being quite mature as a research area, only a handful of clinical cases have been reported and even fewer commercial products have made it to the market. The regulatory pathway and costs associated with the introduction of bioresorbable materials for TE/RM have proven difficult to overcome, but greater access to 3DP/AM has spurred interest in the processing and availability of existing and new bioresorbable materials. For this purpose, herein, we introduce a series of medical-grade filaments for fused deposition modelling/fused filament fabrication (FDM/FFF) based on established and Federal Drug Administration (FDA)-approved polymers. Manufacturability, mechanical characterization, and accelerated degradation studies have been conducted to evaluate the suitability of each material for TE/RM applications. The comparative data serves to introduce these materials, as well as a benchmark to evaluate their potential in hard and soft tissue engineering from a physicochemical perspective.
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22
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He Q, Zhang Q, Liao S, Zhao C, Xie X. Understanding cyclic by-products and ether linkage formation pathways in the transesterification synthesis of aliphatic polycarbonates. Eur Polym J 2017. [DOI: 10.1016/j.eurpolymj.2017.10.019] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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23
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Li Y, Chu Z, Li X, Ding X, Guo M, Zhao H, Yao J, Wang L, Cai Q, Fan Y. The effect of mechanical loads on the degradation of aliphatic biodegradable polyesters. Regen Biomater 2017; 4:179-190. [PMID: 28596915 PMCID: PMC5458542 DOI: 10.1093/rb/rbx009] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2017] [Revised: 03/01/2017] [Accepted: 03/06/2017] [Indexed: 12/11/2022] Open
Abstract
Aliphatic biodegradable polyesters have been the most widely used synthetic polymers for developing biodegradable devices as alternatives for the currently used permanent medical devices. The performances during biodegradation process play crucial roles for final realization of their functions. Because physiological and biochemical environment in vivo significantly affects biodegradation process, large numbers of studies on effects of mechanical loads on the degradation of aliphatic biodegradable polyesters have been launched during last decades. In this review article, we discussed the mechanism of biodegradation and several different mechanical loads that have been reported to affect the biodegradation process. Other physiological and biochemical factors related to mechanical loads were also discussed. The mechanical load could change the conformational strain energy and morphology to weaken the stability of the polymer. Besides, the load and pattern could accelerate the loss of intrinsic mechanical properties of polymers. This indicated that investigations into effects of mechanical loads on the degradation should be indispensable. More combination condition of mechanical loads and multiple factors should be considered in order to keep the degradation rate controllable and evaluate the degradation process in vivo accurately. Only then can the degradable devise achieve the desired effects and further expand the special applications of aliphatic biodegradable polyesters.
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Affiliation(s)
- Ying Li
- School of Biological Science and Medical Engineering, Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, International Research Center for Implantable and Interventional Medical Devices, Beihang University, Beijing 100191, People’s Republic of China
| | - Zhaowei Chu
- School of Biological Science and Medical Engineering, Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, International Research Center for Implantable and Interventional Medical Devices, Beihang University, Beijing 100191, People’s Republic of China
| | - Xiaoming Li
- School of Biological Science and Medical Engineering, Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, International Research Center for Implantable and Interventional Medical Devices, Beihang University, Beijing 100191, People’s Republic of China
| | - Xili Ding
- School of Biological Science and Medical Engineering, Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, International Research Center for Implantable and Interventional Medical Devices, Beihang University, Beijing 100191, People’s Republic of China
| | - Meng Guo
- School of Biological Science and Medical Engineering, Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, International Research Center for Implantable and Interventional Medical Devices, Beihang University, Beijing 100191, People’s Republic of China
| | - Haoran Zhao
- Department of Biomedical Engineer, University of Cincinnati, Cincinnati, OH 45221, USA
| | - Jie Yao
- School of Biological Science and Medical Engineering, Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, International Research Center for Implantable and Interventional Medical Devices, Beihang University, Beijing 100191, People’s Republic of China
| | - Lizhen Wang
- School of Biological Science and Medical Engineering, Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, International Research Center for Implantable and Interventional Medical Devices, Beihang University, Beijing 100191, People’s Republic of China
| | - Qiang Cai
- Key Laboratory of Advanced Materials of Ministry of Education of China, Tsinghua University, Beijing 100084, People’s Republic of China
| | - Yubo Fan
- School of Biological Science and Medical Engineering, Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, International Research Center for Implantable and Interventional Medical Devices, Beihang University, Beijing 100191, People’s Republic of China
- National Research Center for Rehabilitation Technical Aids, Beijing 100176, People’s Republic of China
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24
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Hoque ME. Robust formulation for the design of tissue engineering scaffolds: A comprehensive study on structural anisotropy, viscoelasticity and degradation of 3D scaffolds fabricated with customized desktop robot based rapid prototyping (DRBRP) system. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 72:433-443. [DOI: 10.1016/j.msec.2016.11.019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2016] [Revised: 09/28/2016] [Accepted: 11/07/2016] [Indexed: 10/20/2022]
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25
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Fernández-Calderón MC, Cifuentes SC, Pacha-Olivenza MA, Gallardo-Moreno AM, Saldaña L, González-Carrasco JL, Blanco MT, Vilaboa N, González-Martín ML, Pérez-Giraldo C. Antibacterial effect of novel biodegradable and bioresorbable PLDA/Mg composites. Biomed Mater 2017; 12:015025. [DOI: 10.1088/1748-605x/aa5a14] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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26
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Zheng Y, Cheng Y, Chen J, Ding J, Li M, Li C, Wang JC, Chen X. Injectable Hydrogel-Microsphere Construct with Sequential Degradation for Locally Synergistic Chemotherapy. ACS APPLIED MATERIALS & INTERFACES 2017; 9:3487-3496. [PMID: 28067493 DOI: 10.1021/acsami.6b15245] [Citation(s) in RCA: 69] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
In recent years, in situ chemotherapy mediated by biodegradable polymer platforms has attracted increased attention. Herein, an advanced drug delivery system, combretastatin A-4 (CA4) and docetaxel (DTX)-loaded microsphere embedded in injectable thermosensitive polypeptide hydrogel (i.e., hydrogel-microsphere (Gel-MP) construct), was reported for sequential release of drugs with different mechanisms to treat osteosarcoma synergistically. The Gel-MP construct showed sequential biodegradability and excellent biocompatibility. CA4 was preferentially released from hydrogel with faster degradation to disturb the vascular structure of the tumor and reduce the exchange of nutrients between the tumor and surrounding tissues, which created interstitial space in the tissue for DTX penetration to inhibit tumor cell proliferation. The in vivo treatment with Gel/CA4-MP/DTX efficiently suppressed the growth of mouse K7 osteosarcoma compared to other formulations. More importantly, by systematical study of histopathology and immunohistochemistry, the Gel-MP construct can significantly upregulate antiproliferation effect and reduce toxicity of drugs. Therefore, this injectable and locally sequential delivery system has a bright prospect in clinical application of in situ synergistic chemotherapy.
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Affiliation(s)
- Yuhao Zheng
- Department of Orthopedics, Second Hospital of Jilin University , Changchun 130041, People's Republic of China
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun 130022, People's Republic of China
| | - Yilong Cheng
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun 130022, People's Republic of China
| | - Jinjin Chen
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun 130022, People's Republic of China
| | - Jianxun Ding
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun 130022, People's Republic of China
| | - Mingqiang Li
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun 130022, People's Republic of China
| | - Chen Li
- Department of Orthopedics, Second Hospital of Jilin University , Changchun 130041, People's Republic of China
| | - Jin-Cheng Wang
- Department of Orthopedics, Second Hospital of Jilin University , Changchun 130041, People's Republic of China
| | - Xuesi Chen
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun 130022, People's Republic of China
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27
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Zivkovic L, Akar B, Roux BM, Spremo Potparevic B, Bajic V, Brey EM. Investigation of DNA damage in cells exposed to poly (lactic‐co‐glycolic acid) microspheres. J Biomed Mater Res A 2016; 105:284-291. [DOI: 10.1002/jbm.a.35849] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2016] [Revised: 07/20/2016] [Accepted: 07/28/2016] [Indexed: 02/01/2023]
Affiliation(s)
- Lada Zivkovic
- Institute of Physiology, Faculty of Pharmacy, Department of Biology and Human GeneticsUniversity of BelgradeBelgrade11000 Serbia
| | - Banu Akar
- Biomedical EngineeringIllinois Institute of TechnologyChicago Illinois
- Research Service, Edward HinesJr. V.A. HospitalHines Illinois
| | - Brianna M. Roux
- Biomedical EngineeringIllinois Institute of TechnologyChicago Illinois
- Research Service, Edward HinesJr. V.A. HospitalHines Illinois
| | - Biljana Spremo Potparevic
- Institute of Physiology, Faculty of Pharmacy, Department of Biology and Human GeneticsUniversity of BelgradeBelgrade11000 Serbia
| | - Vladan Bajic
- The Laboratory for Radiobiology and Molecular GeneticsInstitute for Nuclear Research “Vinca”, University of BelgradeBelgrade11000 Serbia
| | - Eric M. Brey
- Biomedical EngineeringIllinois Institute of TechnologyChicago Illinois
- Research Service, Edward HinesJr. V.A. HospitalHines Illinois
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28
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Liao L, Peng C, Li S, Lu Z, Fan Z. Evaluation of bioresorbable polymers as potential stent material-In vivodegradation behavior and histocompatibility. J Appl Polym Sci 2016. [DOI: 10.1002/app.44355] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Lan Liao
- Department of Materials Science; Fudan University; Handan Road No. 220 Shanghai 200433 People's Republic of China
| | - Cheng Peng
- Sixth People's Hospital, Shanghai Jiaotong University; Shanghai 200233 People's Republic of China
| | - Suming Li
- Department of Interface Physicochemistry and Polymers; European Institute of Membranes, UMR CNRS 5635, University of Montpellier; Place Eugene Bataillon 34095 Montpellier France
| | - Zhiqian Lu
- Sixth People's Hospital, Shanghai Jiaotong University; Shanghai 200233 People's Republic of China
| | - Zhongyong Fan
- Department of Materials Science; Fudan University; Handan Road No. 220 Shanghai 200433 People's Republic of China
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Yala S, Boustta M, Gallet O, Hindié M, Carreiras F, Benachour H, Sidane D, Khireddine H. New synthesis method of HA/P(D,L)LA composites: study of fibronectin adsorption and their effects in osteoblastic behavior for bone tissue engineering. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2016; 27:140. [PMID: 27534400 DOI: 10.1007/s10856-016-5756-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2016] [Accepted: 07/09/2016] [Indexed: 06/06/2023]
Abstract
A novel synthetic method to synthesize hydroxyapatite/poly (D,L) lactic acid biocomposite is presented in this study by mixing only the precursors hydroxyapatite and (D,L) LA monomer without adding neither solvent nor catalyst. Three compositions were successfully synthesized with the weight ratios of 1/1, 1/3, and 3/5 (hydroxyapatite/(D,L) lactic acid), and the grafting efficiency of poly (D,L) lactic acid on hydroxyapatite surface reaches up to 84 %. Scanning electron microscopy and Fourier transform infrared spectroscopy showed that the hydroxyapatite particles were successfully incorporated into the poly (D,L) lactic acid polymer and X ray diffraction analysis showed that hydroxyapatite preserved its crystallinity after poly (D,L) lactic acid grafting. Differential scanning calorimetry shows that Tg of hydroxyapatite/poly (D,L) lactic acid composite is less than Tg of pure poly (D,L) lactic acid, which facilitates the shaping of the composite obtained. The addition of poly (D,L) lactic acid improves the adsorption properties of hydroxyapatite for fibronectin extracellular matrix protein. Furthermore, the presence of poly (D,L) lactic acid on hydroxyapatite surface coated with fibronectin enhanced pre-osteoblast STRO-1 adhesion and cell spreading. These results show the promising potential of hydroxyapatite/poly (D,L) lactic acid composite as a bone substitute material for orthopedic applications and bone tissue engineering.
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Affiliation(s)
- Sabeha Yala
- Laboratoire de Génie de l'Environnement, Faculté de Technologie, Université de Bejaia, Bejaia, 06000, Algeria.
| | - Mahfoud Boustta
- Institut des Biomolécules Max Mousseron, UMR CNRS 5247, CRBA, Faculté des Sciences, Université de Montpellier, 15 avenue Charles Flahault, BP 14491, Montpellier cedex 5, 34093, France
| | - Olivier Gallet
- ERRMECe, Université de Cergy-Pontoise, Site Saint-Martin, 2 Avenue Adolphe Chauvin, Cergy-Pontoise Cedex, 95302, France
| | - Mathilde Hindié
- ERRMECe, Université de Cergy-Pontoise, Site Saint-Martin, 2 Avenue Adolphe Chauvin, Cergy-Pontoise Cedex, 95302, France
| | - Franck Carreiras
- ERRMECe, Université de Cergy-Pontoise, Site Saint-Martin, 2 Avenue Adolphe Chauvin, Cergy-Pontoise Cedex, 95302, France
| | - Hamanou Benachour
- ERRMECe, Université de Cergy-Pontoise, Site Saint-Martin, 2 Avenue Adolphe Chauvin, Cergy-Pontoise Cedex, 95302, France
| | - Djahida Sidane
- Laboratoire de Génie de l'Environnement, Faculté de Technologie, Université de Bejaia, Bejaia, 06000, Algeria
| | - Hafit Khireddine
- Laboratoire de Génie de l'Environnement, Faculté de Technologie, Université de Bejaia, Bejaia, 06000, Algeria
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30
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Monitoring Degradation by Controlled Cooling of Absorbing Polymers. J BIOACT COMPAT POL 2016. [DOI: 10.1177/088391159701200206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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31
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Chen X, Ooi CP, Lim TH. Effect of Ganciclovir on the Hydrolytic Degradation of Poly(lactide-co-glycolide) Microspheres. J Biomater Appl 2016; 20:287-302. [PMID: 16364967 DOI: 10.1177/0885328206054265] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Ganciclovir (GCV)-loaded poly(lactide-co-glycolide) (PLGA) microspheres, 125 ± 11 μm in diameter, are produced using the emulsification/solvent evaporation technique. The release rate of the drug is studied for 20 weeks in a phosphate-buffered solution of pH 7 at 37°C. The release of the drug shows a triphasic release pattern, i.e., an initial burst, a diffusive phase, and a second burst. The initial burst occurs within the first 2 days of immersion. After the burst, the release is by diffusion for up to 13 weeks, followed by another burst release, which signals the onset of bulk degradation of the PLGA polymer. The presence of GCV molecules decreases the hydrolytic rate of PLGA degradation. Gel permeation chromatography (GPC), differential scanning calorimetry (DSC), field emission scanning electron microscopy (FESEM), and ultraviolet (UV) spectroscopy are used to assess the hydrolytic degradation and drug release rate of the microspheres.
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Affiliation(s)
- X Chen
- Division of Bioengineering, School of Chemical and Biomedical Engineering, Nanyang Technological University, 639798 Singapore
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32
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33
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Ramazani F, Hiemstra C, Steendam R, Kazazi-Hyseni F, Van Nostrum C, Storm G, Kiessling F, Lammers T, Hennink W, Kok R. Sunitinib microspheres based on [PDLLA-PEG-PDLLA]-b-PLLA multi-block copolymers for ocular drug delivery. Eur J Pharm Biopharm 2015; 95:368-77. [DOI: 10.1016/j.ejpb.2015.02.011] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2014] [Revised: 02/05/2015] [Accepted: 02/09/2015] [Indexed: 10/24/2022]
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34
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Vergnol G, Ginsac N, Rivory P, Meille S, Chenal JM, Balvay S, Chevalier J, Hartmann DJ. In vitro and in vivo evaluation of a polylactic acid-bioactive glass composite for bone fixation devices. J Biomed Mater Res B Appl Biomater 2015; 104:180-91. [PMID: 25677798 DOI: 10.1002/jbm.b.33364] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2014] [Revised: 10/31/2014] [Accepted: 12/09/2014] [Indexed: 11/07/2022]
Abstract
Poly(lactic acid) is nowadays among the most used bioabsorbable materials for medical devices. To promote bone growth on the material surface and increase the degradation rate of the polymer, research is currently focused on organic-inorganic composites by adding a bioactive mineral to the polymer matrix. The purpose of this study was to investigate the ability of a poly(L,DL-lactide)-Bioglass® (P(L,DL)LA-Bioglass(®) 45S5) composite to be used as a bone fixation device. In vitro cell viability testing of P(l,dl)LA based composites containing different amounts of Bioglass(®) 45S5 particles was investigated. According to the degradation rate of the P(L,DL)LA matrix and the cytocompatibility experiments, the composite with 30 wt % of Bioglass® particles seemed to be the best candidate for further investigation. To study its behavior after immersion in simulated physiological conditions, the degradation of the composite was analyzed by measuring its weight loss and mechanical properties and by proceeding with X-ray tomography. We demonstrated that the presence of the bioactive glass significantly accelerated the in vitro degradation of the polymer. A preliminary in vivo investigation on rabbits shows that the addition of 30 wt % of Bioglass(®) in the P(L,DL)LA matrix seems to trigger bone osseointegration especially during the first month of implantation. This composite has thus strong potential interest for health applications.
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Affiliation(s)
- Gwenaelle Vergnol
- Université de Lyon, CNRS, Villeurbanne, France.,Université Claude Bernard Lyon1, MATEIS UMR5510, F-69373, Lyon 8, France
| | - Nathalie Ginsac
- Université de Lyon, CNRS, Villeurbanne, France.,INSA-Lyon, MATEIS UMR5510, F-69621, Villeurbanne, France
| | - Pascaline Rivory
- Université de Lyon, CNRS, Villeurbanne, France.,Université Claude Bernard Lyon1, MATEIS UMR5510, F-69373, Lyon 8, France
| | - Sylvain Meille
- Université de Lyon, CNRS, Villeurbanne, France.,INSA-Lyon, MATEIS UMR5510, F-69621, Villeurbanne, France
| | - Jean-Marc Chenal
- Université de Lyon, CNRS, Villeurbanne, France.,INSA-Lyon, MATEIS UMR5510, F-69621, Villeurbanne, France
| | - Sandra Balvay
- Université de Lyon, CNRS, Villeurbanne, France.,Université Claude Bernard Lyon1, MATEIS UMR5510, F-69373, Lyon 8, France
| | - Jérôme Chevalier
- Université de Lyon, CNRS, Villeurbanne, France.,INSA-Lyon, MATEIS UMR5510, F-69621, Villeurbanne, France.,Institut Universitaire de France, 103 bd Saint Michel, F-75005, Paris, France
| | - Daniel J Hartmann
- Université de Lyon, CNRS, Villeurbanne, France.,Université Claude Bernard Lyon1, MATEIS UMR5510, F-69373, Lyon 8, France
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35
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Lee SH, Lee JH, Cho YS. Analysis of degradation rate for dimensionless surface area of well-interconnected PCL scaffold via in-vitro accelerated degradation experiment. Tissue Eng Regen Med 2014. [DOI: 10.1007/s13770-014-0067-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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36
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Ege D, Cameron R, Best S. The degradation behavior of nanoscale HA/PLGA andα-TCP/PLGA composites. BIOINSPIRED BIOMIMETIC AND NANOBIOMATERIALS 2014. [DOI: 10.1680/bbn.13.00027] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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37
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Kai D, Liow SS, Loh XJ. Biodegradable polymers for electrospinning: towards biomedical applications. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2014; 45:659-70. [PMID: 25491875 DOI: 10.1016/j.msec.2014.04.051] [Citation(s) in RCA: 218] [Impact Index Per Article: 21.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2014] [Revised: 04/02/2014] [Accepted: 04/21/2014] [Indexed: 10/25/2022]
Abstract
Electrospinning has received much attention recently due to the growing interest in nano-technologies and the unique material properties. This review focuses on recent progress in applying electrospinning technique in production of biodegradable nanofibers to the emerging field of biomedical. It first introduces the basic theory and parameters of nanofibers fabrication, with focus on factors affecting the morphology and fiber diameter of biodegradable nanofibers. Next, commonly electrospun biodegradable nanofibers are discussed, and the comparison of the degradation rate of nanoscale materials with macroscale materials are highlighted. The article also assesses the recent advancement of biodegradable nanofibers in different biomedical applications, including tissue engineering, drug delivery, biosensor and immunoassay. Future perspectives of biodegradable nanofibers are discussed in the last section, which emphasizes on the innovation and development in electrospinning of hydrogels nanofibers, pore size control and scale-up productions.
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Affiliation(s)
- Dan Kai
- Institute of Materials Research and Engineering (IMRE) Agency for Science, Technology and Research (A*STAR), 3 Research Link, Singapore 117602, Singapore
| | - Sing Shy Liow
- Institute of Materials Research and Engineering (IMRE) Agency for Science, Technology and Research (A*STAR), 3 Research Link, Singapore 117602, Singapore
| | - Xian Jun Loh
- Institute of Materials Research and Engineering (IMRE) Agency for Science, Technology and Research (A*STAR), 3 Research Link, Singapore 117602, Singapore; Department of Materials Science and Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore 117576, Singapore; Singapore Eye Research Institute, 11 Third Hospital Avenue, Singapore 168751, Singapore.
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38
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Miller KR, Soucek MD. Degradation kinetics of photopolymerizable poly(lactic acid) films. J Appl Polym Sci 2014. [DOI: 10.1002/app.40475] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Kent R. Miller
- Department of Polymer Engineering; University of Akron; Akron Ohio 44325
| | - Mark D. Soucek
- Department of Polymer Engineering; University of Akron; Akron Ohio 44325
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39
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Pooyan P, Kim IT, Jacob KI, Tannenbaum R, Garmestani H. Design of a cellulose-based nanocomposite as a potential polymeric scaffold in tissue engineering. POLYMER 2013. [DOI: 10.1016/j.polymer.2013.01.030] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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40
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Zhang Q, Jiang Y, Zhang Y, Ye Z, Tan W, Lang M. Effect of porosity on long-term degradation of poly (ε-caprolactone) scaffolds and their cellular response. Polym Degrad Stab 2013. [DOI: 10.1016/j.polymdegradstab.2012.10.008] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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41
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Barrett C, Cameron R, Best S. Bioceramic and Biopolymer Nanocomposite Materials for Use in Orthopedic Applications. Tissue Eng Regen Med 2012. [DOI: 10.1201/b13049-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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42
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43
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Acocella F, Brizzola S, Valtolina C, Scanziani E, Marchesi F, Mantero S, Garreau H, Vert M. Prefabricated tracheal prosthesis with partial biodegradable materials: a surgical and tissue engineering evaluation in vivo. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2012; 18:579-94. [PMID: 17550660 DOI: 10.1163/156856207780852505] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Large and circumferential tracheal defects remain at this time an unsolved problem for reconstructive surgery. Many types of prosthetic and tissue grafts have been used but with limited comfortable results. Major complications are anastomotic dehiscence, graft ischemia and stenosis due to the poor vascularization of the prosthetic complex. We studied the in vivo behaviour of a prefabricated flap composed of a partially bioresorbable tracheal prosthesis and an arterio-venous vascular carrier. The prosthesis was made of a tubular skeleton of knitted Dacron (20 microm porosity) embedded within a bioresorbable poly-lactic-co-glycolic acid polymer (PLA(75)GA(25)) covering both sides. Fifteen New Zealand White rabbits were divided in three groups, depending on the time of examination (30, 90 and 180 days post-implantation). The prosthesis was implanted in the visceral space of the neck using the common carotid trunk and the internal jugular vein as vascular pedicle. The histological, immunohistochemical, and ESEM analyses of collected samples, showed a time-dependent process of tissue neoformation and neovascularization on the prosthetic material with a significant increase from 30 to 90 days post-implantation. In contrast, there was no statistically significant difference in the fibrovascular connective deposition from 90 to 180 days. This finding indicated the three months time as the best period for the tissue deposition and consequent hypothetical orthotopic transplantation of the prosthesis. Further in vivo studies are intended to confirm the results.
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Affiliation(s)
- Fabio Acocella
- Dipartimento di Scienze Cliniche, Facoltà di Medicina Veterinaria, Università degli Studi di Milano, Via Celoria 10, 20133 Milano, Italy.
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44
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Liu W, Thomopoulos S, Xia Y. Electrospun nanofibers for regenerative medicine. Adv Healthc Mater 2012; 1:10-25. [PMID: 23184683 PMCID: PMC3586336 DOI: 10.1002/adhm.201100021] [Citation(s) in RCA: 328] [Impact Index Per Article: 27.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2011] [Indexed: 12/11/2022]
Abstract
This Progress Report reviews recent progress in applying electrospun nanofibers to the emerging field of regenerative medicine. It begins with a brief introduction to electrospinning and nanofibers, with a focus on issues related to the selection of materials, incorporation of bioactive molecules, degradation characteristics, control of mechanical properties, and facilitation of cell infiltration. Next, a number of approaches to fabricate scaffolds from electrospun nanofibers are discussed, including techniques for controlling the alignment of nanofibers and for producing scaffolds with complex architectures. The article also highlights applications of the nanofiber-based scaffolds in four areas of regenerative medicine that involve nerves, dural tissues, tendons, and the tendon-to-bone insertion site. The Progress Report concludes with perspectives on challenges and future directions for design, fabrication, and utilization of scaffolds based on electrospun nanofibers.
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Affiliation(s)
- Wenying Liu
- Department of Energy, Environmental and Chemical Engineering, Washington University in St. Louis, St. Louis, MO 63130 (USA)
| | - Stavros Thomopoulos
- Department of Orthopaedic Surgery, Washington University School of Medicine, St. Louis, MO 63110 (USA). Department of Biomedical Engineering, Washington University in St. Louis, St. Louis, MO 63130 (USA)
| | - Younan Xia
- Department of Biomedical Engineering, Washington University in St. Louis, St. Louis, MO 63130 (USA)
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Beslikas T, Gigis I, Goulios V, Christoforides J, Papageorgiou GZ, Bikiaris DN. Crystallization study and comparative in vitro-in vivo hydrolysis of PLA reinforcement ligament. Int J Mol Sci 2011; 12:6597-618. [PMID: 22072906 PMCID: PMC3210997 DOI: 10.3390/ijms12106597] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2011] [Revised: 09/24/2011] [Accepted: 09/28/2011] [Indexed: 11/16/2022] Open
Abstract
In the present work, the crystallization behavior and in vitro-in vivo hydrolysis rates of PLA absorbable reinforcement ligaments used in orthopaedics for the repair and reinforcement of articulation instabilities were studied. Tensile strength tests showed that this reinforcement ligament has similar mechanical properties to Fascia Latta, which is an allograft sourced from the ilio-tibial band of the human body. The PLA reinforcement ligament is a semicrystalline material with a glass transition temperature around 61 °C and a melting point of ~178 °C. Dynamic crystallization revealed that, although the crystallization rates of the material are slow, they are faster than the often-reported PLA crystallization rates. Mass loss and molecular weight reduction measurements showed that in vitro hydrolysis at 50 °C initially takes place at a slow rate, which gets progressively higher after 30-40 days. As found from SEM micrographs, deterioration of the PLA fibers begins during this time. Furthermore, as found from in vivo hydrolysis in the human body, the PLA reinforcement ligament is fully biocompatible and after 6 months of implantation is completely covered with flesh. However, the observed hydrolysis rate from in vivo studies was slow due to high molecular weight and degree of crystallinity.
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Affiliation(s)
- Theodore Beslikas
- 2nd Orthopaedic Department, Aristotle University of Thessaloniki, Thessaloniki, Macedonia 54124, Greece; E-Mails: (T.B.); (I.G.); (V.G.); (J.C.)
| | - Ioannis Gigis
- 2nd Orthopaedic Department, Aristotle University of Thessaloniki, Thessaloniki, Macedonia 54124, Greece; E-Mails: (T.B.); (I.G.); (V.G.); (J.C.)
| | - Vasilios Goulios
- 2nd Orthopaedic Department, Aristotle University of Thessaloniki, Thessaloniki, Macedonia 54124, Greece; E-Mails: (T.B.); (I.G.); (V.G.); (J.C.)
| | - John Christoforides
- 2nd Orthopaedic Department, Aristotle University of Thessaloniki, Thessaloniki, Macedonia 54124, Greece; E-Mails: (T.B.); (I.G.); (V.G.); (J.C.)
| | - George Z. Papageorgiou
- Laboratory of Polymer Chemistry and Technology, Department of Chemistry, Aristotle University of Thessaloniki, Thessaloniki, Macedonia 54124, Greece; E-Mail:
| | - Dimitrios N. Bikiaris
- Laboratory of Polymer Chemistry and Technology, Department of Chemistry, Aristotle University of Thessaloniki, Thessaloniki, Macedonia 54124, Greece; E-Mail:
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +30-2310-997812; Fax: +30-2310-997667
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Composition–structure–property (Zn2+ and Ca2+ ion release) evaluation of Si–Na–Ca–Zn–Ce glasses: Potential components for nerve guidance conduits. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2011. [DOI: 10.1016/j.msec.2010.12.016] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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47
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Akala EO, Wiriyacoonkasem P, Pan G. Studies on in vitro availability, degradation, and thermal properties of naltrexone-loaded biodegradable microspheres. Drug Dev Ind Pharm 2011; 37:673-84. [PMID: 21449706 DOI: 10.3109/03639045.2010.535540] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
PURPOSE Following the report that continuous exposure of naltrexone (NTX) to drug-dependent pregnant women is safe and effective, the work was designed to develop NTX-loaded controlled delivery systems capable of making NTX available from 1 month to 4 months or greater by a single parenteral administration. Such drug-delivery systems will be useful in alleviating problems such as fetal alcohol syndrome in pregnant women and other problems associated with alcoholism. METHODS These studies were designed to investigate in vitro drug availability and microsphere degradation (investigated by gel permeation chromatography (GPC) peak areas of water-soluble fragments released into incubation medium, changes in molecular weight with degradation time, and changes in the glass transition temperature with degradation time) of NTX-loaded poly(D,L-lactide-co-glycolide) (PDLLAGA) microspheres. RESULTS Data showed that in vitro drug availability and degradation were affected by the initial molecular weight of the copolymers, the type of copolymers (lactide-co-glycolide ratio), the source of the polymer (the manufacturer), and the nature of the drug (anhydrous versus regular NTX). CONCLUSION Drug-development scientists interested in NTX-loaded microspheres for the design of controlled release devices using these polyesters should take adequate cognizance of the variables that affect drug availability from NTX-loaded microspheres. The copolymers are suitable for the fabrication of NTX-loaded microspheres capable of sustained drug release from 30 to 150 days.
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Affiliation(s)
- Emmamuel O Akala
- Department of Pharmaceutical Sciences/Center for Drug Research and Development (CDRD), School of Pharmacy, Howard University, Washington DC, USA.
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48
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Vert M, Li S, Garreau H. Recent advances in the field of lactic acid/glycolic acid polymer-based therapeutic systems. ACTA ACUST UNITED AC 2011. [DOI: 10.1002/masy.19950980154] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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49
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Engineer C, Parikh J, Raval A. Effect of copolymer ratio on hydrolytic degradation of poly(lactide-co-glycolide) from drug eluting coronary stents. Chem Eng Res Des 2011. [DOI: 10.1016/j.cherd.2010.06.013] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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50
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Kim HI, Ishihara K, Lee S, Seo JH, Kim HY, Suh D, Kim MU, Konno T, Takai M, Seo JS. Tissue response to poly(l-lactic acid)-based blend with phospholipid polymer for biodegradable cardiovascular stents. Biomaterials 2011; 32:2241-7. [DOI: 10.1016/j.biomaterials.2010.11.067] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2010] [Accepted: 11/27/2010] [Indexed: 02/06/2023]
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