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Wu C, Wang B, Zhang C, Wysk RA, Chen YW. Bioprinting: an assessment based on manufacturing readiness levels. Crit Rev Biotechnol 2016; 37:333-354. [DOI: 10.3109/07388551.2016.1163321] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Changsheng Wu
- Georgia Tech Manufacturing Institute, Georgia Institute of Technology, Atlanta, GA, USA
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA, USA
| | - Ben Wang
- Georgia Tech Manufacturing Institute, Georgia Institute of Technology, Atlanta, GA, USA
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA, USA
- School of Industrial and Systems Engineering, Georgia Institute of Technology, Atlanta, GA, USA
| | - Chuck Zhang
- Georgia Tech Manufacturing Institute, Georgia Institute of Technology, Atlanta, GA, USA
- School of Industrial and Systems Engineering, Georgia Institute of Technology, Atlanta, GA, USA
| | - Richard A. Wysk
- Department of Industrial and Systems Engineering, North Carolina State University, Raleigh, NC, USA
| | - Yi-Wen Chen
- Institute of Clinical Medical Science, China Medical University, Taichung, Taiwan, ROC
- 3D Printing Medical Research Center, China Medical University Hospital, Taichung, Taiwan, ROC
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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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Dávila JL, Freitas MS, Inforçatti Neto P, Silveira ZC, Silva JVL, d’Ávila MA. Fabrication of PCL/β-TCP scaffolds by 3D mini-screw extrusion printing. J Appl Polym Sci 2015. [DOI: 10.1002/app.43031] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- J. L. Dávila
- Department of Manufacturing and Materials Engineering, Faculty of Mechanical Engineering; University of Campinas; Campinas SP Brazil
- 3-D Technologies Division; Renato Archer Information Technology Center; Campinas SP Brazil
| | - M. S. Freitas
- 3-D Technologies Division; Renato Archer Information Technology Center; Campinas SP Brazil
- Department of Mechanical Engineering, São Carlos School of Engineering; University of São Paulo; São Carlos SP Brazil
| | - P. Inforçatti Neto
- 3-D Technologies Division; Renato Archer Information Technology Center; Campinas SP Brazil
| | - Z. C. Silveira
- Department of Mechanical Engineering, São Carlos School of Engineering; University of São Paulo; São Carlos SP Brazil
| | - J. V. L. Silva
- 3-D Technologies Division; Renato Archer Information Technology Center; Campinas SP Brazil
| | - M. A. d’Ávila
- Department of Manufacturing and Materials Engineering, Faculty of Mechanical Engineering; University of Campinas; Campinas SP Brazil
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Mi HY, Salick MR, Jing X, Jacques BR, Crone WC, Peng XF, Turng LS. Characterization of thermoplastic polyurethane/polylactic acid (TPU/PLA) tissue engineering scaffolds fabricated by microcellular injection molding. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2013; 33:4767-76. [PMID: 24094186 PMCID: PMC4554542 DOI: 10.1016/j.msec.2013.07.037] [Citation(s) in RCA: 196] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2012] [Revised: 06/17/2013] [Accepted: 07/25/2013] [Indexed: 11/19/2022]
Abstract
Polylactic acid (PLA) and thermoplastic polyurethane (TPU) are two kinds of biocompatible and biodegradable polymers that can be used in biomedical applications. PLA has rigid mechanical properties while TPU possesses flexible mechanical properties. Blended TPU/PLA tissue engineering scaffolds at different ratios for tunable properties were fabricated via twin screw extrusion and microcellular injection molding techniques for the first time. Multiple test methods were used to characterize these materials. Fourier transform infrared spectroscopy (FTIR) confirmed the existence of the two components in the blends; differential scanning calorimetry (DSC) and dynamic mechanical analysis (DMA) confirmed the immiscibility between the TPU and PLA. Scanning electron microscopy (SEM) images verified that, at the composition ratios studied, PLA was dispersed as spheres or islands inside the TPU matrix and that this phase morphology further influenced the scaffold's microstructure and surface roughness. The blends exhibited a large range of mechanical properties that covered several human tissue requirements. 3T3 fibroblast cell culture showed that the scaffolds supported cell proliferation and migration properly. Most importantly, this study demonstrated the feasibility of mass producing biocompatible PLA/TPU scaffolds with tunable microstructures, surface roughnesses, and mechanical properties that have the potential to be used as artificial scaffolds in multiple tissue engineering applications.
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Affiliation(s)
- Hao-Yang Mi
- National Engineering Research Center of Novel Equipment for Polymer Processing, South China University of Technology, Guangzhou, China
- Department of Mechanical Engineering, University of Wisconsin–Madison, WI, USA
| | - Max R. Salick
- Department of Engineering Physics, University of Wisconsin–Madison, WI, USA
| | - Xin Jing
- National Engineering Research Center of Novel Equipment for Polymer Processing, South China University of Technology, Guangzhou, China
- Department of Mechanical Engineering, University of Wisconsin–Madison, WI, USA
| | | | - Wendy C. Crone
- Department of Engineering Physics, University of Wisconsin–Madison, WI, USA
| | - Xiang-Fang Peng
- National Engineering Research Center of Novel Equipment for Polymer Processing, South China University of Technology, Guangzhou, China
| | - Lih-Sheng Turng
- Department of Mechanical Engineering, University of Wisconsin–Madison, WI, USA
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Jiang CP, Chen YY, Hsieh MF, Lee HM. Solid freeform fabrication and in-vitro response of osteoblast cells of mPEG-PCL-mPEG bone scaffolds. Biomed Microdevices 2013; 15:369-79. [DOI: 10.1007/s10544-013-9740-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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