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Green composite from carbon dioxide-derived poly (propylene carbonate) and biodegradable poly (glycolic-co-lactic acid) fiber. Colloid Polym Sci 2023. [DOI: 10.1007/s00396-023-05068-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
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Nun N, Cruz M, Jain T, Tseng YM, Menefee J, Jatana S, Patil PS, Leipzig ND, McDonald C, Maytin E, Joy A. Thread Size and Polymer Composition of 3D Printed and Electrospun Wound Dressings Affect Wound Healing Outcomes in an Excisional Wound Rat Model. Biomacromolecules 2020; 21:4030-4042. [PMID: 32902971 DOI: 10.1021/acs.biomac.0c00801] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Thread size and polymer composition are critical properties to consider for achieving a positive healing outcome with a wound dressing. Three-dimensional (3D) printed scaffolds and electrospun mats both offer distinct advantages as replaceable wound dressings. This research aims to determine if the thread size and polymer compositions of the scaffolds affect skin wound healing outcomes, an aspect that has not been adequately explored. Using a modular polymer platform, four polyester direct-write 3D printed scaffolds and electrospun mats were fabricated into wound dressings. The dressings were applied to splinted, full thickness skin wounds in an excisional wound rat model and evaluated against control wounds to which no dressing was applied. Wound closure rates and reduction of the wound bed width were not affected by the thread size or polymer composition. However, epidermal thickness was larger in wounds treated with electrospun dressings and was slightly affected by the polymer composition. Two of the four tested polymer compositions lead to delayed reorganization of granulation tissues. Moreover, enhanced angiogenesis was seen in wounds treated with 3D printed dressings compared to those treated with electrospun dressings. The results from this study can be used to inform the choice of dressing architecture and polymer compositions to achieve positive wound healing outcomes.
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Affiliation(s)
- Nicholas Nun
- Department of Polymer Science, The University of Akron, Akron, Ohio 44325, United States
| | - Megan Cruz
- Department of Polymer Science, The University of Akron, Akron, Ohio 44325, United States
| | - Tanmay Jain
- Department of Polymer Science, The University of Akron, Akron, Ohio 44325, United States
| | - Yen-Ming Tseng
- Department of Polymer Science, The University of Akron, Akron, Ohio 44325, United States
| | - Josh Menefee
- Department of Polymer Science, The University of Akron, Akron, Ohio 44325, United States
| | - Samreen Jatana
- Department of Inflammation and Immunity, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio 44106, United States
| | - Pritam S Patil
- Department of Chemical, Biomolecular and Corrosion Engineering, The University of Akron, Akron, Ohio 44325, United States
| | - Nic D Leipzig
- Department of Chemical, Biomolecular and Corrosion Engineering, The University of Akron, Akron, Ohio 44325, United States
| | - Christine McDonald
- Department of Inflammation and Immunity, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio 44106, United States
| | - Edward Maytin
- Department of Biomedical Engineering, Lerner Research Institute, Cleveland Clinic, Cleveland Ohio 44106, United States.,Department of Dermatology, Dermatology and Plastic Surgery Institute, Cleveland Clinic, Cleveland, Ohio 44106, United States
| | - Abraham Joy
- Department of Polymer Science, The University of Akron, Akron, Ohio 44325, United States
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Ahmadzadeh Y, Babaei A, Goudarzi A. Assessment of localization and degradation of ZnO nano-particles in the PLA/PCL biocompatible blend through a comprehensive rheological characterization. Polym Degrad Stab 2018. [DOI: 10.1016/j.polymdegradstab.2018.10.007] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Kriebel A, Hodde D, Kuenzel T, Engels J, Brook G, Mey J. Cell-free artificial implants of electrospun fibres in a three-dimensional gelatin matrix support sciatic nerve regeneration in vivo. J Tissue Eng Regen Med 2017; 11:3289-3304. [PMID: 28127889 DOI: 10.1002/term.2237] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2015] [Revised: 05/13/2016] [Accepted: 06/03/2016] [Indexed: 11/06/2022]
Abstract
Surgical repair of larger peripheral nerve lesions requires the use of autologous nerve grafts. At present, clinical alternatives to avoid nerve transplantation consist of empty tubes, which are only suitable for the repair over short distances and have limited success. We developed a cell-free, three-dimensional scaffold for axonal guidance in long-distance nerve repair. Sub-micron scale fibres of biodegradable poly-ε-caprolactone (PCL) and collagen/PCL (c/PCL) blends were incorporated in a gelatin matrix and inserted in collagen tubes. The conduits were tested by replacing 15-mm-long segments of rat sciatic nerves in vivo. Biocompatibility of the implants and nerve regeneration were assessed histologically, with electromyography and with behavioural tests for motor functions. Functional repair was achieved in all animals with autologous transplants, in 12 of 13 rats that received artificial implants with an internal structure and in half of the animals with empty nerve conduits. In rats with implants containing c/PCL fibres, the extent of recovery (compound muscle action potentials, motor functions of the hind limbs) was superior to animals that had received empty implants, but not as good as with autologous nerve transplantation. Schwann cell migration and axonal regeneration were observed in all artificial implants, and muscular atrophy was reduced in comparison with animals that had received no implants. The present design represents a significant step towards cell-free, artificial nerve bridges that can replace autologous nerve transplants in the clinic. Copyright © 2017 John Wiley & Sons, Ltd.
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Affiliation(s)
- Andreas Kriebel
- Institut für Biologie II, RWTH Aachen University, Germany.,EURON Graduate School of Neuroscience, Maastricht University, the Netherlands
| | - Dorothee Hodde
- Institut für Neuropathologie, Universitätsklinikum RWTH Aachen University, Germany
| | - Thomas Kuenzel
- Institut für Biologie II, RWTH Aachen University, Germany
| | - Jessica Engels
- Institut für Biologie II, RWTH Aachen University, Germany
| | - Gary Brook
- Institut für Neuropathologie, Universitätsklinikum RWTH Aachen University, Germany.,Jülich-Aachen Research Alliance, Translational Brain Medicine, Jülich, Germany
| | - Jörg Mey
- EURON Graduate School of Neuroscience, Maastricht University, the Netherlands.,Hospital Nacional de Parapléjicos, SESCAM, Toledo, Spain
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Li Y, Xin S, Bian Y, Xu K, Han C, Dong L. The physical properties of poly(l-lactide) and functionalized eggshell powder composites. Int J Biol Macromol 2016; 85:63-73. [DOI: 10.1016/j.ijbiomac.2015.12.070] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2015] [Revised: 12/14/2015] [Accepted: 12/20/2015] [Indexed: 11/28/2022]
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