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Miescher I, Schaffner N, Rieber J, Bürgisser GM, Ongini E, Yang Y, Milionis A, Vogel V, Snedeker JG, Calcagni M, Buschmann J. Hyaluronic acid/PEO electrospun tube reduces tendon adhesion to levels comparable to native tendons - An in vitro and in vivo study. Int J Biol Macromol 2024; 273:133193. [PMID: 38885859 DOI: 10.1016/j.ijbiomac.2024.133193] [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: 12/19/2023] [Revised: 06/10/2024] [Accepted: 06/13/2024] [Indexed: 06/20/2024]
Abstract
A major problem after tendon injury is adhesion formation to the surrounding tissue leading to a limited range of motion. A viable strategy to reduce adhesion extent is the use of physical barriers that limit the contact between the tendon and the adjacent tissue. The purpose of this study was to fabricate an electrospun bilayered tube of hyaluronic acid/polyethylene oxide (HA/PEO) and biodegradable DegraPol® (DP) to improve the anti-adhesive effect of the implant in a rabbit Achilles tendon full laceration model compared to a pure DP tube. Additionally, the attachment of rabbit tenocytes on pure DP and HA/PEO containing scaffolds was tested and Scanning Electron Microscopy, Fourier-transform Infrared Spectroscopy, Differential Scanning Calorimetry, Water Contact Angle measurements, and testing of mechanical properties were used to characterize the scaffolds. In vivo assessment after three weeks showed that the implant containing a second HA/PEO layer significantly reduced adhesion extent reaching levels comparable to native tendons, compared with a pure DP implant that reduced adhesion formation only by 20 %. Tenocytes were able to attach to and migrate into every scaffold, but cell number was reduced over two weeks. Implants containing HA/PEO showed better mechanical properties than pure DP tubes and with the ability to entirely reduce adhesion extent makes this implant a promising candidate for clinical application in tendon repair.
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Affiliation(s)
- Iris Miescher
- Division of Plastic Surgery and Hand Surgery, University Hospital Zurich, Sternwartstrasse 14, 8091 Zurich, Switzerland.
| | - Nicola Schaffner
- Division of Plastic Surgery and Hand Surgery, University Hospital Zurich, Sternwartstrasse 14, 8091 Zurich, Switzerland.
| | - Julia Rieber
- Division of Plastic Surgery and Hand Surgery, University Hospital Zurich, Sternwartstrasse 14, 8091 Zurich, Switzerland.
| | - Gabriella Meier Bürgisser
- Division of Plastic Surgery and Hand Surgery, University Hospital Zurich, Sternwartstrasse 14, 8091 Zurich, Switzerland.
| | - Esteban Ongini
- University Clinic Balgrist, Orthopaedic Biomechanics, Forchstrasse 340, 8008 Zurich, Switzerland.
| | - Yao Yang
- Department of Health Sciences & Technology & Department of Materials, Schmelzbergstrasse 9, LFO, 8092 Zürich, Switzerland.
| | - Athanasios Milionis
- Laboratory of Thermodynamics in Emerging Technologies, Department of Mechanical and Process Engineering, ETH Zürich, 8092 Zürich, Switzerland.
| | - Viola Vogel
- Laboratory of Applied Mechanobiology, Institute of Translational Medicine, and Department of Health Sciences and Technology, ETH Zurich, 8093 Zurich, Switzerland.
| | - Jess G Snedeker
- University Clinic Balgrist, Orthopaedic Biomechanics, Forchstrasse 340, 8008 Zurich, Switzerland.
| | - Maurizio Calcagni
- Division of Plastic Surgery and Hand Surgery, University Hospital Zurich, Sternwartstrasse 14, 8091 Zurich, Switzerland.
| | - Johanna Buschmann
- Division of Plastic Surgery and Hand Surgery, University Hospital Zurich, Sternwartstrasse 14, 8091 Zurich, Switzerland.
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Zhang Y, Li TT, Wang Z, Shiu BC, Lin JH, Lou CW. Coaxial microfluidic spinning design produced high strength alginate membranes for antibacterial activity and drug release. Int J Biol Macromol 2023:124956. [PMID: 37245751 DOI: 10.1016/j.ijbiomac.2023.124956] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 05/03/2023] [Accepted: 05/16/2023] [Indexed: 05/30/2023]
Abstract
Directional drug delivery and sufficient strength are two conditions that need to be met for wound dressing. In this paper, an oriented fibrous alginate membrane with sufficient strength was constructed via coaxial microfluidic spinning, and zeolitic imidazolate framework-8/ascorbic acid was used to realize drug delivery and antibacterial activity. The effects of the process parameters of the coaxial microfluidic spinning on the mechanical properties of the alginate membrane were discussed. In addition, it was found that the antimicrobial activity mechanism of zeolitic imidazolate framework-8 was attributed to the disruptive effect of reactive oxygen species (ROS) on bacteria, and the quantitative amount of generated ROS were evaluated by detecting •OH and H2O2. Furthermore, a mathematical drug diffusion model was established and showed high consistency with the experimental data (R2 = 0.99). This study provides a new idea for the preparation of dressing materials with high strength and directional drug delivery and also provides some guidance for the development of coaxial microfluidic spin technology to be used in functional materials for drug release.
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Affiliation(s)
- Ying Zhang
- Innovation Platform of Intelligent and Energy-Saving Textiles, School of Textile Science and Engineering, Tiangong University, Tianjin 300387, China
| | - Ting-Ting Li
- Innovation Platform of Intelligent and Energy-Saving Textiles, School of Textile Science and Engineering, Tiangong University, Tianjin 300387, China; Tianjin and Education Ministry Key Laboratory of Advanced Textile Composite Materials, Tiangong University, Tianjin 300387, China.
| | - Zhike Wang
- Innovation Platform of Intelligent and Energy-Saving Textiles, School of Textile Science and Engineering, Tiangong University, Tianjin 300387, China
| | - Bing-Chiuan Shiu
- College of Material and Chemical Engineering, Minjiang University, Fuzhou 350108, China; Fujian Key Laboratory of Novel Functional Fibers and Materials, Minjiang University, Fuzhou, Fujian 350108, China
| | - Jia-Horng Lin
- Innovation Platform of Intelligent and Energy-Saving Textiles, School of Textile Science and Engineering, Tiangong University, Tianjin 300387, China; College of Material and Chemical Engineering, Minjiang University, Fuzhou 350108, China; Advanced Medical Care and Protection Technology Research Center, Department of Fiber and Composite Materials, Feng Chia University, Taichung City 407102, Taiwan; School of Chinese Medicine, China Medical University, Taichung City 404333, Taiwan
| | - Ching-Wen Lou
- Innovation Platform of Intelligent and Energy-Saving Textiles, School of Textile Science and Engineering, Tiangong University, Tianjin 300387, China; Fujian Key Laboratory of Novel Functional Fibers and Materials, Minjiang University, Fuzhou, Fujian 350108, China; Department of Bioinformatics and Medical Engineering, Asia University, Taichung City 413305, Taiwan; Department of Medical Research, China Medical University Hospital, China Medical University, Taichung City 404333, Taiwan.
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N-Acetyl-D-Glucosamine-Loaded Chitosan Filaments Biodegradable and Biocompatible for Use as Absorbable Surgical Suture Materials. MATERIALS 2019; 12:ma12111807. [PMID: 31167371 PMCID: PMC6600723 DOI: 10.3390/ma12111807] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Revised: 04/17/2019] [Accepted: 04/18/2019] [Indexed: 12/14/2022]
Abstract
The aim of this study was to prepare chitosan (CS) filaments incorporated with N-acetyl-D-Glucosamine (GlcNAc), using the wet spinning method, in order to combine the GlcNAc pharmacological properties with the CS biological properties for use as absorbable suture materials. The filaments were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), uniaxial tensile testing, in vitro biodegradation, and through in vitro drug release and cytotoxicity studies. It was observed that the addition of GlcNAc did not alter the morphology of the filaments. The CS and CS/GlcNAc filaments presented diameters 145 µm and 148 µm, respectively, and the surfaces were homogeneous. Although the mechanical resistance of the chitosan filaments decreased with the incorporation of the GlcNAc drug, this property was greater than the mean values indicated in the U.S. Pharmacopeia (1.7 N) for suture number 6-0 (filament diameter of 100–149 μm). The biodegradation of the CS filaments was accelerated by the addition of GlcNAc. After 35 days, the CS/GlcNAc filaments degradability was at its total, and for the CS filaments it was acquired in 49 days. The in vitro kinetic of the release process was of the zero-order and Hopfenberg models, controlled by both diffusion and erosion process. The in vitro cytotoxicity data of the CS and CS/GlcNAc filaments toward L929 cells showed that these filaments are nontoxic to these cells. Thus, the GlcNAc-loaded CS filaments might be promising as absorbable suture materials. In addition, this medical device may be able to enhance healing processes, relieve pain, and minimize infection at the surgery site due the prolonged release of GlcNAc.
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Scaffaro R, Maio A, Botta L, Gulino EF, Gulli D. Tunable release of Chlorhexidine from Polycaprolactone-based filaments containing graphene nanoplatelets. Eur Polym J 2019. [DOI: 10.1016/j.eurpolymj.2018.11.031] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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Davoodi P, Lee LY, Xu Q, Sunil V, Sun Y, Soh S, Wang CH. Drug delivery systems for programmed and on-demand release. Adv Drug Deliv Rev 2018; 132:104-138. [PMID: 30415656 DOI: 10.1016/j.addr.2018.07.002] [Citation(s) in RCA: 177] [Impact Index Per Article: 29.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Revised: 05/25/2018] [Accepted: 07/02/2018] [Indexed: 01/06/2023]
Abstract
With the advancement in medical science and understanding the importance of biodistribution and pharmacokinetics of therapeutic agents, modern drug delivery research strives to utilize novel materials and fabrication technologies for the preparation of robust drug delivery systems to combat acute and chronic diseases. Compared to traditional drug carriers, which could only control the release of the agents in a monotonic manner, the new drug carriers are able to provide a precise control over the release time and the quantity of drug introduced into the patient's body. To achieve this goal, scientists have introduced "programmed" and "on-demand" approaches. The former provides delivery systems with a sophisticated architecture to precisely tune the release rate for a definite time period, while the latter includes systems directly controlled by an operator/practitioner, perhaps with a remote device triggering/affecting the implanted or injected drug carrier. Ideally, such devices can determine flexible release pattern and intensify the efficacy of a therapy via controlling time, duration, dosage, and location of drug release in a predictable, repeatable, and reliable manner. This review sheds light on the past and current techniques available for fabricating and remotely controlling drug delivery systems and addresses the application of new technologies (e.g. 3D printing) in this field.
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Randazzo W, Fabra MJ, Falcó I, López-Rubio A, Sánchez G. Polymers and Biopolymers with Antiviral Activity: Potential Applications for Improving Food Safety. Compr Rev Food Sci Food Saf 2018; 17:754-768. [DOI: 10.1111/1541-4337.12349] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Revised: 03/08/2018] [Accepted: 03/10/2018] [Indexed: 12/12/2022]
Affiliation(s)
- Walter Randazzo
- Dept. of Microbiology and Ecology; Univ. of Valencia.; Av. Dr. Moliner, 50. 46100 Burjassot Valencia Spain
- Dept. of Preservation and Food Safety Technologies; IATA-CSIC; Avda. Agustin Escardino 7 46980 Paterna Valencia Spain
| | - María José Fabra
- Dept. of Preservation and Food Safety Technologies; IATA-CSIC; Avda. Agustin Escardino 7 46980 Paterna Valencia Spain
| | - Irene Falcó
- Dept. of Microbiology and Ecology; Univ. of Valencia.; Av. Dr. Moliner, 50. 46100 Burjassot Valencia Spain
- Dept. of Preservation and Food Safety Technologies; IATA-CSIC; Avda. Agustin Escardino 7 46980 Paterna Valencia Spain
| | - Amparo López-Rubio
- Dept. of Preservation and Food Safety Technologies; IATA-CSIC; Avda. Agustin Escardino 7 46980 Paterna Valencia Spain
| | - Gloria Sánchez
- Dept. of Preservation and Food Safety Technologies; IATA-CSIC; Avda. Agustin Escardino 7 46980 Paterna Valencia Spain
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Puppi D, Chiellini F. Wet-spinning of biomedical polymers: from single-fibre production to additive manufacturing of three-dimensional scaffolds. POLYM INT 2017. [DOI: 10.1002/pi.5332] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Dario Puppi
- BIOLab Research Group, Department of Chemistry and Industrial Chemistry; University of Pisa, UdR INSTM Pisa; Via Moruzzi Pisa Italy
| | - Federica Chiellini
- BIOLab Research Group, Department of Chemistry and Industrial Chemistry; University of Pisa, UdR INSTM Pisa; Via Moruzzi Pisa Italy
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8
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Flores FP, Kong F. In Vitro Release Kinetics of Microencapsulated Materials and the Effect of the Food Matrix. Annu Rev Food Sci Technol 2017; 8:237-259. [DOI: 10.1146/annurev-food-030216-025720] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Floirendo P. Flores
- Institute of Food Science and Technology, University of the Philippines Los Baños, Laguna, Philippines 4031
| | - Fanbin Kong
- Department of Food Science and Technology, The University of Georgia, Athens, Georgia 30602
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Sharifi F, Sooriyarachchi AC, Altural H, Montazami R, Rylander MN, Hashemi N. Fiber Based Approaches as Medicine Delivery Systems. ACS Biomater Sci Eng 2016; 2:1411-1431. [DOI: 10.1021/acsbiomaterials.6b00281] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Farrokh Sharifi
- Department
of Mechanical Engineering, Iowa State University, Ames, Iowa 50011, United States
| | | | - Hayriye Altural
- Department
of Mechanical Engineering, Iowa State University, Ames, Iowa 50011, United States
| | - Reza Montazami
- Department
of Mechanical Engineering, Iowa State University, Ames, Iowa 50011, United States
- Center
of Advanced Host Defense Immunobiotics and Translational Medicine, Iowa State University, Ames, Iowa 50011, United States
| | - Marissa Nichole Rylander
- Department
of Mechanical Engineering, University of Texas at Austin, Austin, Texas 78712, United States
| | - Nastaran Hashemi
- Department
of Mechanical Engineering, Iowa State University, Ames, Iowa 50011, United States
- Center
of Advanced Host Defense Immunobiotics and Translational Medicine, Iowa State University, Ames, Iowa 50011, United States
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Wu HL, Bremner DH, Li HY, Shi QQ, Wu JZ, Xiao RQ, Zhu LM. A novel multifunctional biomedical material based on polyacrylonitrile: Preparation and characterization. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 62:702-9. [DOI: 10.1016/j.msec.2016.02.026] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2015] [Revised: 01/30/2016] [Accepted: 02/08/2016] [Indexed: 01/02/2023]
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11
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Evrova O, Houska J, Welti M, Bonavoglia E, Calcagni M, Giovanoli P, Vogel V, Buschmann J. Bioactive, Elastic, and Biodegradable Emulsion Electrospun DegraPol Tube Delivering PDGF-BB for Tendon Rupture Repair. Macromol Biosci 2016; 16:1048-63. [DOI: 10.1002/mabi.201500455] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2015] [Revised: 03/04/2016] [Indexed: 11/10/2022]
Affiliation(s)
- Olivera Evrova
- Division of Plastic Surgery and Hand Surgery; University Hospital Zürich; Sternwartstrasse 14 8091 Zürich Switzerland
- Laboratory of Applied Mechanobiology; ETH Zürich; Vladimir-Prelog-Weg 1-5/10 8093 Zürich Switzerland
| | - Joanna Houska
- Division of Plastic Surgery and Hand Surgery; University Hospital Zürich; Sternwartstrasse 14 8091 Zürich Switzerland
| | - Manfred Welti
- Division of Plastic Surgery and Hand Surgery; University Hospital Zürich; Sternwartstrasse 14 8091 Zürich Switzerland
| | - Eliana Bonavoglia
- ab medica; Via J. F. Kennedy 10/12 20023 Cerro Maggiore (Milan) Italy
| | - Maurizio Calcagni
- Division of Plastic Surgery and Hand Surgery; University Hospital Zürich; Sternwartstrasse 14 8091 Zürich Switzerland
| | - Pietro Giovanoli
- Division of Plastic Surgery and Hand Surgery; University Hospital Zürich; Sternwartstrasse 14 8091 Zürich Switzerland
| | - Viola Vogel
- Laboratory of Applied Mechanobiology; ETH Zürich; Vladimir-Prelog-Weg 1-5/10 8093 Zürich Switzerland
| | - Johanna Buschmann
- Division of Plastic Surgery and Hand Surgery; University Hospital Zürich; Sternwartstrasse 14 8091 Zürich Switzerland
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Puppi D, Piras AM, Pirosa A, Sandreschi S, Chiellini F. Levofloxacin-loaded star poly(ε-caprolactone) scaffolds by additive manufacturing. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2016; 27:44. [PMID: 26758891 DOI: 10.1007/s10856-015-5658-1] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2015] [Accepted: 12/24/2015] [Indexed: 06/05/2023]
Abstract
The employment of a tissue engineering scaffold able to release an antimicrobial agent with a controlled kinetics represents an effective tool for the treatment of infected tissue defects as well as for the prevention of scaffolds implantation-related infectious complications. This research activity was aimed at the development of additively manufactured star poly(ε-caprolactone) (*PCL) scaffolds loaded with levofloxacin, investigated as antimicrobial fluoroquinolone model. For this purpose a computer-aided wet-spinning technique allowing functionalizing the scaffold during the fabrication process was explored. Scaffolds with customized composition, microstructure and anatomical external shape were developed by optimizing the processing parameters. Morphological, thermal and mechanical characterization showed that drug loading did not compromise the fabrication process and the final performance of the scaffolds. The developed *PCL scaffolds showed a sustained in vitro release of the loaded antibiotic for 5 weeks. The proposed computer-aided wet-spinning technique appears well suited for the fabrication of anatomical scaffolds endowed with levofloxacin-releasing properties to be tested in vivo for the regeneration of long bone critical size defects in a rabbit model.
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Affiliation(s)
- Dario Puppi
- BIOLab Research Group, Department of Chemistry and Industrial Chemistry, University of Pisa, UdR INSTM Pisa, Via Moruzzi 13, 56124, Pisa, Italy
| | - Anna Maria Piras
- BIOLab Research Group, Department of Chemistry and Industrial Chemistry, University of Pisa, UdR INSTM Pisa, Via Moruzzi 13, 56124, Pisa, Italy
| | - Alessandro Pirosa
- BIOLab Research Group, Department of Chemistry and Industrial Chemistry, University of Pisa, UdR INSTM Pisa, Via Moruzzi 13, 56124, Pisa, Italy
| | - Stefania Sandreschi
- BIOLab Research Group, Department of Chemistry and Industrial Chemistry, University of Pisa, UdR INSTM Pisa, Via Moruzzi 13, 56124, Pisa, Italy
| | - Federica Chiellini
- BIOLab Research Group, Department of Chemistry and Industrial Chemistry, University of Pisa, UdR INSTM Pisa, Via Moruzzi 13, 56124, Pisa, Italy.
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Kim JK, Yoo C, Cha YH, Kim YH. Thermo-reversible injectable gel based on enzymatically-chopped low molecular weight methylcellulose for exenatide and FGF 21 delivery to treat types 1 and 2 diabetes. J Control Release 2014; 194:316-22. [PMID: 25245775 DOI: 10.1016/j.jconrel.2014.09.014] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2014] [Revised: 09/04/2014] [Accepted: 09/11/2014] [Indexed: 02/01/2023]
Abstract
Diabetes is the fastest growing metabolic disease that fails to utilize glucose properly due to insulin deficiency or insulin resistance. Although several limited studies demonstrated non-invasive means of protein delivery, major hurdles for commercial success such as short half-life, enzymatic degradation and low bioavailability still remain to overcome. Methylcellulose (MC), a hydrophobically-modified cellulose derivative, forms temperature reversible gel in aqueous solution. However, as the gelling temperature of MC is higher than body temperature, it should be lowered to below body temperature for practical clinical application. In order to decrease gelling temperature and increase bio-compatibility and bio-elimination of MC, the molecular weight of MC was decreased using enzymatic degradation method and confirmed by gel permeation chromatography. Bio-elimination of low molecular weight (LMw) MC was confirmed with non-invasive live image and ex vivo experiment. The exenatide and FGF 21 were physically loaded 100% into LMwMC-based thermo-reversible gel and slowly released from gel with no initial bursts. Exenatide-loaded LMwMC gel showed reduction of blood glucose level for a week in type 1 diabetic animal model. FGF 21-loaded LMwMC gel reduced glucose level to normal condition and maintained over 10 days in type 2 diabetic animal model. LMwMC-based thermo-reversible and injectable hydrogel provides a strong potential to be efficient protein drug delivery system for the treatment of type 1 and type 2 diabetes.
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Affiliation(s)
- Jang Kyoung Kim
- Department of Bioengineering, Hanyang University, 17 Haengdang-dong, Seongdong-gu, Seoul 133-791, Republic of Korea
| | - Changhun Yoo
- Department of Bioengineering, Hanyang University, 17 Haengdang-dong, Seongdong-gu, Seoul 133-791, Republic of Korea
| | - Yong-Hoon Cha
- Department of Bioengineering, Hanyang University, 17 Haengdang-dong, Seongdong-gu, Seoul 133-791, Republic of Korea
| | - Yong-Hee Kim
- Department of Bioengineering, Hanyang University, 17 Haengdang-dong, Seongdong-gu, Seoul 133-791, Republic of Korea; Institute for Bioengineering and Biopharmaceutical Research, Hanyang University, 17 Haengdang-dong, Seongdong-gu, Seoul 133-791, Republic of Korea.
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14
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Tailored protein release from biodegradable poly(ε-caprolactone-PEG)-b-poly(ε-caprolactone) multiblock-copolymer implants. Eur J Pharm Biopharm 2014; 87:329-37. [DOI: 10.1016/j.ejpb.2014.02.012] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2013] [Revised: 02/20/2014] [Accepted: 02/24/2014] [Indexed: 11/23/2022]
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15
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Puppi D, Zhang X, Yang L, Chiellini F, Sun X, Chiellini E. Nano/microfibrous polymeric constructs loaded with bioactive agents and designed for tissue engineering applications: a review. J Biomed Mater Res B Appl Biomater 2014; 102:1562-79. [PMID: 24678016 DOI: 10.1002/jbm.b.33144] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2013] [Revised: 01/29/2014] [Accepted: 03/06/2014] [Indexed: 01/04/2023]
Abstract
Nano/microfibrous polymeric constructs present various inherent advantages, such as highly porous architecture and high surface to volume ratio, making them attractive for tissue engineering purposes. Electrospinning is the most preferred technique for the fabrication of polymeric nanofibrous assemblies that can mimic the physical functions of native extracellular matrix greatly favoring cells attachment and thus influencing their morphology and activities. Different approaches have been developed to apply polymeric microfiber fabrication techniques (e.g. wet-spinning) for the obtainment of scaffolds with a three-dimensional network of micropores suitable for effective cells migration. Progress in additive manufacturing technology has led to the development of complex scaffold's shapes and microfibrous structures with a high degree of automation, good accuracy and reproducibility. Various loading methods, such as direct blending, coaxial electrospinning and microparticles incorporation, are enabling to develop customized strategies for the biofunctionalization of nano/microfibrous scaffolds with a tailored kinetics of release of different bioactive agents, ranging from small molecules, such as antibiotics, to protein drugs, such as growth factors, and even cells. Recent activities on the combination of different processing techniques and loading methods for the obtainment of biofunctionalized polymeric constructs with a complex multiscale structure open new possibilities for the development of biomimetic scaffolds endowed with a hierarchical architecture and a sophisticated release kinetics of different bioactive agents. This review is aimed at summarizing current advances in technologies and methods for manufacturing nano/microfibrous polymeric constructs suitable as tissue engineering scaffolds, and for their combination with different bioactive agents to promote tissue regeneration and therapeutic effects.
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Affiliation(s)
- Dario Puppi
- Department of Chemistry and Industrial Chemistry, Laboratory of Bioactive Polymeric Materials for Biomedical and Environmental Applications (BIOlab), University of Pisa, 56010, San Piero a Grado (Pi), Italy
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Lee J, Farag MM, Park EK, Lim J, Yun HS. A simultaneous process of 3D magnesium phosphate scaffold fabrication and bioactive substance loading for hard tissue regeneration. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2014; 36:252-60. [DOI: 10.1016/j.msec.2013.12.007] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2013] [Revised: 11/01/2013] [Accepted: 12/06/2013] [Indexed: 02/07/2023]
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Wet spun microfibers: potential in the design of controlled-release scaffolds? Ther Deliv 2013; 4:1075-7. [DOI: 10.4155/tde.13.73] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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