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Gao S, Nie T, Lin Y, Jiang L, Wang L, Wu J, Jiao Y. 3D printing tissue-engineered scaffolds for auricular reconstruction. Mater Today Bio 2024; 27:101141. [PMID: 39045312 PMCID: PMC11265588 DOI: 10.1016/j.mtbio.2024.101141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2024] [Revised: 06/24/2024] [Accepted: 06/28/2024] [Indexed: 07/25/2024] Open
Abstract
Congenital microtia is the most common cause of auricular defects, with a prevalence of approximately 5.18 per 10,000 individuals. Autologous rib cartilage grafting is the leading treatment modality at this stage of auricular reconstruction currently. However, harvesting rib cartilage may lead to donor site injuries, such as pneumothorax, postoperative pain, chest wall scarring, and deformity. Therefore, in the pursuit of better graft materials, biomaterial scaffolds with great histocompatibility, precise control of morphology, non-invasiveness properties are gradually becoming a new research hotspot in auricular reconstruction. This review collectively presents the exploit and application of 3D printing biomaterial scaffold in auricular reconstruction. Although the tissue-engineered ear still faces challenges before it can be widely applied to patients in clinical settings, and its long-term effects have yet to be evaluated, we aim to provide guidance for future research directions in 3D printing biomaterial scaffold for auricular reconstruction. This will ultimately benefit the translational and clinical application of cartilage tissue engineering and biomaterials in the treatment of auricular defects.
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Affiliation(s)
- Shuyi Gao
- Department of Otorhinolaryngology Head and Neck Surgery, Guangzhou Twelfth People's Hospital (The Affiliated Twelfth People's Hospital of Guangzhou Medical University), Guangzhou Medical University, Guangzhou, 510620, China
- Institute of Otorhinolaryngology, Head and Neck Surgery, Guangzhou Medical University, Guangzhou, 510620, China
| | - Tianqi Nie
- Department of Otorhinolaryngology Head and Neck Surgery, Guangzhou Twelfth People's Hospital (The Affiliated Twelfth People's Hospital of Guangzhou Medical University), Guangzhou Medical University, Guangzhou, 510620, China
- Institute of Otorhinolaryngology, Head and Neck Surgery, Guangzhou Medical University, Guangzhou, 510620, China
| | - Ying Lin
- Department of Otolaryngology Head and Neck Surgery, Guangzhou Red Cross Hospital (Guangzhou Red Cross Hospital of Jinan University), Jinan University, Guangzhou, 510240, China
- Institute of Otolaryngology Head and Neck Surgery, Jinan University, Guangzhou, 510240, China
| | - Linlan Jiang
- Department of Otorhinolaryngology Head and Neck Surgery, Guangzhou Twelfth People's Hospital (The Affiliated Twelfth People's Hospital of Guangzhou Medical University), Guangzhou Medical University, Guangzhou, 510620, China
- Institute of Otorhinolaryngology, Head and Neck Surgery, Guangzhou Medical University, Guangzhou, 510620, China
| | - Liwen Wang
- Department of Otorhinolaryngology Head and Neck Surgery, Guangzhou Twelfth People's Hospital (The Affiliated Twelfth People's Hospital of Guangzhou Medical University), Guangzhou Medical University, Guangzhou, 510620, China
- Institute of Otorhinolaryngology, Head and Neck Surgery, Guangzhou Medical University, Guangzhou, 510620, China
| | - Jun Wu
- Institute of Otorhinolaryngology, Head and Neck Surgery, Guangzhou Medical University, Guangzhou, 510620, China
- Bioscience and Biomedical Engineering Thrust, The Hong Kong University of Science and Technology (Guangzhou), Nansha, Guangzhou, 511400, China
- Division of Life Science, The Hong Kong University of Science and Technology, Hong Kong, China
| | - Yuenong Jiao
- Department of Otorhinolaryngology Head and Neck Surgery, Guangzhou Twelfth People's Hospital (The Affiliated Twelfth People's Hospital of Guangzhou Medical University), Guangzhou Medical University, Guangzhou, 510620, China
- Institute of Otorhinolaryngology, Head and Neck Surgery, Guangzhou Medical University, Guangzhou, 510620, China
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Lanser C, Fisher DM, Kasrai L, Fisher K, Podolsky DJ. Development and Preliminary Evaluation of A Soft Tissue Microtia Simulator. J Craniofac Surg 2024:00001665-990000000-01714. [PMID: 38869279 DOI: 10.1097/scs.0000000000010322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Accepted: 04/19/2024] [Indexed: 06/14/2024] Open
Abstract
Surgical simulation has been used extensively for learning microtia reconstruction and has almost exclusively involved framework creation. However, soft tissue reconstruction in microtia is equally challenging and would benefit from a simulation platform. This study aimed to describe the development and preliminary evaluation of a high-fidelity soft tissue microtia simulator. Three-dimensional modeling software, fused deposition 3-dimensional printing, adhesive techniques, silicones, and polyurethane rubbers were utilized to create a right lobular-type microtia simulator that comprises skin, subcutaneous tissue, and cartilage. Two expert microtia surgeons performed a microtia reconstruction on the simulator and evaluated its value and realism using a Likert-type questionnaire. The surgeons utilized a previously developed synthetic framework and successfully performed the critical steps of the soft tissue reconstruction, including marking, incising, dissection, removal of the cartilage remnant, drain insertion, insertion of the framework, closing of the skin, and demonstration of the soft tissue conforming over the framework using suction. A preliminary assessment of the simulator demonstrated that the simulator is anatomically accurate, realistic, and highly valuable as a training tool. A high-fidelity soft tissue microtia simulator was successfully developed and tested. The simulator provides a valuable training platform for learning a critical component of microtia reconstruction.
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Affiliation(s)
| | - David M Fisher
- Division of Plastic & Reconstructive Surgery, The Hospital for Sick Children
| | - Leila Kasrai
- Division of Plastic Surgery, St Josephs Health Center
| | - Keon Fisher
- Division of Plastic & Reconstructive Surgery, The Hospital for Sick Children
| | - Dale J Podolsky
- Division of Plastic & Reconstructive Surgery, The Hospital for Sick Children
- Posluns Center for Image Guided Innovation and Therapeutic Intervention (PCIGITI), Toronto, Ontario, Canada
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Generalova AN, Vikhrov AA, Prostyakova AI, Apresyan SV, Stepanov AG, Myasoedov MS, Oleinikov VA. Polymers in 3D printing of external maxillofacial prostheses and in their retention systems. Int J Pharm 2024; 657:124181. [PMID: 38697583 DOI: 10.1016/j.ijpharm.2024.124181] [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: 11/05/2023] [Revised: 04/12/2024] [Accepted: 04/28/2024] [Indexed: 05/05/2024]
Abstract
Maxillofacial defects, arising from trauma, oncological disease or congenital abnormalities, detrimentally affect daily life. Prosthetic repair offers the aesthetic and functional reconstruction with the help of materials mimicking natural tissues. 3D polymer printing enables the design of patient-specific prostheses with high structural complexity, as well as rapid and low-cost fabrication on-demand. However, 3D printing for prosthetics is still in the early stage of development and faces various challenges for widespread use. This is because the most suitable polymers for maxillofacial restoration are soft materials that do not have the required printability, mechanical strength of the printed parts, as well as functionality. This review focuses on the challenges and opportunities of 3D printing techniques for production of polymer maxillofacial prostheses using computer-aided design and modeling software. Review discusses the widely used polymers, as well as their blends and composites, which meet the most important assessment criteria, such as the physicochemical, biological, aesthetic properties and processability in 3D printing. In addition, strategies for improving the polymer properties, such as their printability, mechanical strength, and their ability to print multimaterial and architectural structures are highlighted. The current state of the prosthetic retention system is presented with a focus on actively used polymer adhesives and the recently implemented prosthesis-supporting osseointegrated implants, with an emphasis on their creation from 3D-printed polymers. The successful prosthetics is discussed in terms of the specificity of polymer materials at the restoration site. The approaches and technological prospects are also explored through the examples of the nasal, auricle and ocular prostheses, ranging from prototypes to end-use products.
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Affiliation(s)
- Alla N Generalova
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry of the Russian Academy of Sciences, Miklukho-Maklaya 16/10, 117997 Moscow, Russia; Federal Scientific Research Center "Crystallography and Photonics" of the Russian Academy of Sciences, 119333 Moscow, Russia.
| | - Alexander A Vikhrov
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry of the Russian Academy of Sciences, Miklukho-Maklaya 16/10, 117997 Moscow, Russia
| | - Anna I Prostyakova
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry of the Russian Academy of Sciences, Miklukho-Maklaya 16/10, 117997 Moscow, Russia
| | - Samvel V Apresyan
- Institute of Digital Dentistry, Medical Institute, Peoples' Friendship University of Russia (RUDN University), Miklukho-Maklaya 6, 117198 Moscow, Russia
| | - Alexander G Stepanov
- Institute of Digital Dentistry, Medical Institute, Peoples' Friendship University of Russia (RUDN University), Miklukho-Maklaya 6, 117198 Moscow, Russia
| | - Maxim S Myasoedov
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry of the Russian Academy of Sciences, Miklukho-Maklaya 16/10, 117997 Moscow, Russia
| | - Vladimir A Oleinikov
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry of the Russian Academy of Sciences, Miklukho-Maklaya 16/10, 117997 Moscow, Russia
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Kaboodkhani R, Mehrabani D, Moghaddam A, Salahshoori I, Khonakdar HA. Tissue engineering in otology: a review of achievements. JOURNAL OF BIOMATERIALS SCIENCE. POLYMER EDITION 2024; 35:1105-1153. [PMID: 38386362 DOI: 10.1080/09205063.2024.2318822] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Accepted: 02/09/2024] [Indexed: 02/23/2024]
Abstract
Tissue engineering application in otology spans a distance from the pinna to auditory nerve covered with specialized tissues and functions such as sense of hearing and aesthetics. It holds the potential to address the barriers of lack of donor tissue, poor tissue match, and transplant rejection through provision of new and healthy tissues similar to the host and possesses the capacity to renew, to regenerate, and to repair in-vivo and was shown to be a bypasses for any need to immunosuppression. This review aims to investigate the application of tissue engineering in otology and to evaluate the achievements and challenges in external, middle and inner ear sections. Since gaining the recent knowledge and training on use of different scaffolds is essential for otology specialists and who look for the recovery of ear function and aesthetics of patients, it is shown in this review how utilizing tissue engineering and cell transplantation, regenerative medicine can provide advancements in hearing and ear aesthetics to fit different patients' needs.
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Affiliation(s)
- Reza Kaboodkhani
- Otorhinolaryngology Research Center, Department of Otorhinolaryngology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Fars, Iran
| | - Davood Mehrabani
- Burn and Wound Healing Research Center, Shiraz University of Medical Sciences, Shiraz, Fars, Iran
- Stem Cell Technology Research Center, Shiraz University of Medical Sciences, Shiraz, Fars, Iran
| | | | | | - Hossein Ali Khonakdar
- Iran Polymer and Petrochemical Institute (IPPI), Tehran, Iran
- Max Bergmann Center of Biomaterials and Institute of Materials Science, Technische Universität Dresden, Dresden, Germany
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Vernice NA, Dong X, Matavosian AA, Corpuz GS, Shin J, Bonassar LJ, Spector JA. Bioengineering Full-scale auricles using 3D-printed external scaffolds and decellularized cartilage xenograft. Acta Biomater 2024; 179:121-129. [PMID: 38494083 DOI: 10.1016/j.actbio.2024.03.012] [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] [Received: 11/21/2023] [Revised: 02/10/2024] [Accepted: 03/11/2024] [Indexed: 03/19/2024]
Abstract
Reconstruction of the human auricle remains a formidable challenge for plastic surgeons. Autologous costal cartilage grafts and alloplastic implants are technically challenging, and aesthetic and/or tactile outcomes are frequently suboptimal. Using a small animal "bioreactor", we have bioengineered full-scale ears utilizing decellularized cartilage xenograft placed within a 3D-printed external auricular scaffold that mimics the size, shape, and biomechanical properties of the native human auricle. The full-scale polylactic acid ear scaffolds were 3D-printed based upon data acquired from 3D photogrammetry of an adult ear. Ovine costal cartilage was processed either through mincing (1 mm3) or zesting (< 0.5 mm3), and then fully decellularized and sterilized. At explantation, both the minced and zested neoears maintained the size and contour complexities of the scaffold topography with steady tissue ingrowth through 6 months in vivo. A mild inflammatory infiltrate at 3 months was replaced by homogenous fibrovascular tissue ingrowth enveloping individual cartilage pieces at 6 months. All ear constructs were pliable, and the elasticity was confirmed by biomechanical analysis. Longer-term studies of the neoears with faster degrading biomaterials will be warranted for future clinical application. STATEMENT OF SIGNIFICANCE: Accurate reconstruction of the human auricle has always been a formidable challenge to plastic surgeons. In this article, we have bioengineered full-scale ears utilizing decellularized cartilage xenograft placed within a 3D-printed external auricular scaffold that mimic the size, shape, and biomechanical properties of the native human auricle. Longer-term studies of the neoears with faster degrading biomaterials will be warranted for future clinical application.
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Affiliation(s)
- Nicholas A Vernice
- Laboratory of Bioregenerative Medicine & Surgery, Department of Surgery, Division of Plastic Surgery, Weill Cornell Medical College, New York, NY, USA
| | - Xue Dong
- Laboratory of Bioregenerative Medicine & Surgery, Department of Surgery, Division of Plastic Surgery, Weill Cornell Medical College, New York, NY, USA
| | - Alicia A Matavosian
- Nancy E. and Peter C. Meinig School of Biomedical Engineering, Cornell University, Ithaca, NY, USA
| | - George S Corpuz
- Laboratory of Bioregenerative Medicine & Surgery, Department of Surgery, Division of Plastic Surgery, Weill Cornell Medical College, New York, NY, USA
| | - James Shin
- Department of Radiology, Well Cornell Medicine, New York, NY, USA
| | - Lawrence J Bonassar
- Nancy E. and Peter C. Meinig School of Biomedical Engineering, Cornell University, Ithaca, NY, USA; Sibley School of Mechanical and Aerospace Engineering, Cornell University, Ithaca, NY, USA
| | - Jason A Spector
- Laboratory of Bioregenerative Medicine & Surgery, Department of Surgery, Division of Plastic Surgery, Weill Cornell Medical College, New York, NY, USA; Nancy E. and Peter C. Meinig School of Biomedical Engineering, Cornell University, Ithaca, NY, USA; Division of Plastic and Reconstructive Surgery, Department of Surgery, Weill Cornell Medicine, New York, NY, USA.
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Wang D, Lin L, Yang Q, Song Y, Zhou J, Zhang H, Yang Y, Pan B, Jiang H. Structure and Mechanical Performance of Biomimetic Costal Cartilage Models for Ear Framework Handcrafting Simulation. Plast Reconstr Surg 2023; 152:1098e-1102e. [PMID: 36940152 DOI: 10.1097/prs.0000000000010431] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/21/2023]
Abstract
SUMMARY Ear framework handcrafting simulation using costal cartilage models is crucially important for ear reconstruction surgery education. Fabrication of proper models that are mechanically and structurally comparable to their native counterparts is an unmet challenge. The authors developed structure and mechanical performance biomimetic costal cartilage models for practicing and simulating handcrafting of ear frameworks. High-tensile silicone and three-dimensional techniques were used to fabricate biomimetic models. The models well-replicated the three-dimensional structure of human costal cartilage. Comprehensive mechanical tests showed that high-tensile silicone models had stiffness, hardness, and suture retention ability similar to those of their native counterparts, and they were distinctly superior to commonly used materials for costal cartilage simulation. This model satisfied surgeons and contributed to creation of outstanding ear frameworks. The recreated models were used in ear framework handcrafting workshops. Novices' surgical simulation performance with different models was compared and analyzed. People who used high-tensile silicone models have greater progress and confidence after training. Using high-tensile silicone costal cartilage models is an excellent choice for practicing and simulating the fabrication of ear frameworks manually. The models benefit practitioners and students in practicing handcrafting ear frameworks and surgical skills.
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Affiliation(s)
- Di Wang
- From the Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College
| | - Lin Lin
- From the Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College
| | - Qinghua Yang
- From the Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College
| | - Yupeng Song
- From the Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College
| | - Jiayu Zhou
- From the Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College
| | - He Zhang
- From the Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College
| | - Yang Yang
- From the Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College
| | - Bo Pan
- From the Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College
| | - Haiyue Jiang
- From the Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College
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Wersényi G, Scheper V, Spagnol S, Eixelberger T, Wittenberg T. Cost-effective 3D scanning and printing technologies for outer ear reconstruction: current status. Head Face Med 2023; 19:46. [PMID: 37891625 PMCID: PMC10612312 DOI: 10.1186/s13005-023-00394-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Accepted: 10/11/2023] [Indexed: 10/29/2023] Open
Abstract
Current 3D scanning and printing technologies offer not only state-of-the-art developments in the field of medical imaging and bio-engineering, but also cost and time effective solutions for surgical reconstruction procedures. Besides tissue engineering, where living cells are used, bio-compatible polymers or synthetic resin can be applied. The combination of 3D handheld scanning devices or volumetric imaging, (open-source) image processing packages, and 3D printers form a complete workflow chain that is capable of effective rapid prototyping of outer ear replicas. This paper reviews current possibilities and latest use cases for 3D-scanning, data processing and printing of outer ear replicas with a focus on low-cost solutions for rehabilitation engineering.
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Affiliation(s)
| | - Verena Scheper
- Department of Otolaryngology, Hannover Medical School, Hannover, D-30625, Germany
| | | | - Thomas Eixelberger
- Friedrich-Alexander-University Erlangen-Nuremberg & Fraunhofer Institute for Integrated Circuits IIS, Erlangen, D-91058, Germany
| | - Thomas Wittenberg
- Friedrich-Alexander-University Erlangen-Nuremberg & Fraunhofer Institute for Integrated Circuits IIS, Erlangen, D-91058, Germany
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Liu Y, Wu W, Seunggi C, Li Z, Huang Y, Zhou K, Wang B, Chen Z, Zhang Z. The application and progress of stem cells in auricular cartilage regeneration: a systematic review. Front Cell Dev Biol 2023; 11:1204050. [PMID: 37564374 PMCID: PMC10409996 DOI: 10.3389/fcell.2023.1204050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Accepted: 07/10/2023] [Indexed: 08/12/2023] Open
Abstract
Background: The treatment of microtia or acquired ear deformities by surgery is a significant challenge for plastic and ENT surgeons; one of the most difficult points is constructing the scaffold for auricular reconstruction. As a type of cell with multiple differentiation potentials, stem cells play an essential role in the construction of cartilage scaffolds, and therefore have received widespread attention in ear reconstructive research. Methods: A literature search was conducted for peer-reviewed articles between 2005 and 2023 with the following keywords: stem cells; auricular cartilage; ear cartilage; conchal cartilage; auricular reconstruction, regeneration, and reparation of chondrocytes; tissue engineering in the following databases: PubMed, MEDLINE, Cochrane, and Ovid. Results: Thirty-three research articles were finally selected and their main characteristics were summarized. Adipose-derived stem cells (ADSCs), bone marrow mesenchymal stem cells (BMMSCs), perichondrial stem/progenitor cells (PPCs), and cartilage stem/progenitor cells (CSPCs) were mainly used in chondrocyte regeneration. Injecting the stem cells into the cartilage niche directly, co-culturing the stem cells with the auricular cartilage cells, and inducing the cells in the chondrogenic medium in vitro were the main methods that have been demonstrated in the studies. The chondrogenic ability of these cells was observed in vitro, and they also maintained good elasticity and morphology after implantation in vivo for a period of time. Conclusion: ADSC, BMMSC, PPC, and CSPC were the main stem cells that have been researched in craniofacial cartilage reconstruction, the regenerative cartilage performed highly similar to normal cartilage, and the test of AGA and type II collagen content also proved the cartilage property of the neo-cartilage. However, stem cell reconstruction of the auricle is still in the initial stage of animal experiments, transplantation with such scaffolds in large animals is still lacking, and there is still a long way to go.
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Affiliation(s)
- Yu Liu
- Department of Burn and Plastic Surgery, West China Hospital, Sichuan University, Chengdu, China
- Department of Plastic Reconstructive and Aesthetic Surgery, West China Tianfu Hospital, Sichuan University, Chengdu, China
| | - Wenqing Wu
- Department of Burn and Plastic Surgery, West China Hospital, Sichuan University, Chengdu, China
| | - Chun Seunggi
- Department of Burn and Plastic Surgery, West China Hospital, Sichuan University, Chengdu, China
| | - Zhengyong Li
- Department of Burn and Plastic Surgery, West China Hospital, Sichuan University, Chengdu, China
- Department of Plastic Reconstructive and Aesthetic Surgery, West China Tianfu Hospital, Sichuan University, Chengdu, China
| | - Yeqian Huang
- West China Hospital, Sichuan University, Chengdu, China
| | - Kai Zhou
- Department of Plastic Reconstructive and Aesthetic Surgery, West China Tianfu Hospital, Sichuan University, Chengdu, China
| | - Baoyun Wang
- Department of Burn and Plastic Surgery, West China Hospital, Sichuan University, Chengdu, China
- Department of Plastic Reconstructive and Aesthetic Surgery, West China Tianfu Hospital, Sichuan University, Chengdu, China
| | - Zhixing Chen
- Department of Burn and Plastic Surgery, West China Hospital, Sichuan University, Chengdu, China
- Department of Plastic Reconstructive and Aesthetic Surgery, West China Tianfu Hospital, Sichuan University, Chengdu, China
| | - Zhenyu Zhang
- Department of Burn and Plastic Surgery, West China Hospital, Sichuan University, Chengdu, China
- Department of Plastic Reconstructive and Aesthetic Surgery, West China Tianfu Hospital, Sichuan University, Chengdu, China
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Zhou J, Wu N, Zeng J, Liang Z, Qi Z, Jiang H, Chen H, Liu X. Chondrogenic Differentiation of Adipose-Derived Stromal Cells Induced by Decellularized Cartilage Matrix/Silk Fibroin Secondary Crosslinking Hydrogel Scaffolds with a Three-Dimensional Microstructure. Polymers (Basel) 2023; 15:polym15081868. [PMID: 37112015 PMCID: PMC10144539 DOI: 10.3390/polym15081868] [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: 02/14/2023] [Revised: 03/18/2023] [Accepted: 03/29/2023] [Indexed: 04/29/2023] Open
Abstract
Finding an ideal scaffold is always an important issue in the field of cartilage tissue engineering. Both decellularized extracellular matrix and silk fibroin have been used as natural biomaterials for tissue regeneration. In this study, a secondary crosslinking method of γ irradiation and ethanol induction was used to prepare decellularized cartilage extracellular matrix and silk fibroin (dECM-SF) hydrogels with biological activity. Furthermore, the dECM-SF hydrogels were cast in custom-designed molds to produce a three-dimensional multi-channeled structure to improve internal connectivity. The adipose-derived stromal cells (ADSC) were seeded on the scaffolds, cultured in vitro for 2 weeks, and implanted in vivo for another 4 and 12 weeks. The double crosslinked dECM-SF hydrogels exhibited an excellent pore structure after lyophilization. The multi-channeled hydrogel scaffold presents higher water absorption ability, surface wettability, and no cytotoxicity. The addition of dECM and a channeled structure could promote chondrogenic differentiation of ADSC and engineered cartilage formation, confirmed by H&E, safranin O staining, type II collagen immunostaining, and qPCR assay. In conclusion, the hydrogel scaffold fabricated by the secondary crosslinking method has good plasticity and can be used as a scaffold for cartilage tissue engineering. The multi-channeled dECM-SF hydrogel scaffolds possess a chondrogenic induction activity that promotes engineered cartilage regeneration of ADSC in vivo.
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Affiliation(s)
- Jing Zhou
- Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100144, China
| | - Nier Wu
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing 100071, China
| | - Jinshi Zeng
- Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100144, China
| | - Ziyu Liang
- Department of Biomedical Engineering, College of Future Technology, Peking University, Beijing 100871, China
| | - Zuoliang Qi
- Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100144, China
| | - Haiyue Jiang
- Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100144, China
| | - Haifeng Chen
- Department of Biomedical Engineering, College of Future Technology, Peking University, Beijing 100871, China
| | - Xia Liu
- Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100144, China
- Key Laboratory of Reconstruction for Superfacial Tissues and Organs, Beijing 100144, China
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10
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Yalgın A, Köse FA, Gökçe EH. The effect of cyclosporine A and co-enzyme Q10 loaded solid lipid nanoparticles on 3D printed human auricular model: Evaluation of cell growth. J Drug Deliv Sci Technol 2023. [DOI: 10.1016/j.jddst.2022.104087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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11
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Preoperative Imaging of Costal Cartilage to Aid Reconstructive Head and Neck Surgery. Ann Plast Surg 2022; 89:e69-e80. [DOI: 10.1097/sap.0000000000003325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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12
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Xu H, Su Y, Liao Z, Liu Z, Huang X, Zhao L, Duan R, Hu Y, Wei Y, Lian X, Huang D. Coaxial bioprinting vascular constructs: A review. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111549] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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13
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Dong X, Askinas C, Kim J, Sherman JE, Bonassar LJ, Spector J. Efficient engineering of human auricular cartilage through mesenchymal stem cell chaperoning. J Tissue Eng Regen Med 2022; 16:825-835. [PMID: 35689509 DOI: 10.1002/term.3332] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Revised: 05/17/2022] [Accepted: 05/27/2022] [Indexed: 01/08/2023]
Abstract
A major challenge to the clinical translation of tissue-engineered ear scaffolds for ear reconstruction is the limited auricular chondrocyte (hAuC) yield available from patients. Starting with a relatively small number of chondrocytes in culture results in dedifferentiation and loss of phenotype with subsequent expansion. To significantly decrease the number of chondrocytes required for human elastic cartilage engineering, we co-cultured human mesenchymal stem cells (hMSCs) with HAuCs to promote healthy elastic cartilage formation. HAuCs along with human bone marrow-derived hMSCs were encapsulated into 1% Type I collagen at 25 million/mL total cell density with different ratios (HAuCs/hMSCs: 10/90, 25/75, 50/50) and then injected into customized 3D-printed polylactic acid (PLA) ridged external scaffolds, which simulate the shape of the auricular helical rim, and implanted subcutaneously in nude rats for 1, 3 and 6 months. The explanted constructs demonstrated near complete volume preservation and topography maintenance of the ridged "helical" feature after 6 months with all ratios. Cartilaginous appearing tissue formed within scaffolds by 3 months, verified by histologic analysis demonstrating mature elastic cartilage within the constructs with chondrocytes seen in lacunae within a Type II collagen and proteoglycan-enriched matrix, and surrounded by a neoperichondrial external layer. Compressive mechanical properties comparable to human elastic cartilage were achieved after 6 months. Co-implantation of hAuCs and hMSCs in collagen within an external scaffold efficiently produced shaped human elastic cartilage without volume loss even when hAuC comprised only 10% of the implanted cell population, marking a crucial step toward the clinical translation of auricular tissue engineering.
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Affiliation(s)
- Xue Dong
- Department of Surgery, Laboratory of Bioregenerative Medicine & Surgery, Division of Plastic Surgery, Weill Cornell Medical College, New York, New York, USA
| | - Carly Askinas
- Department of Surgery, Laboratory of Bioregenerative Medicine & Surgery, Division of Plastic Surgery, Weill Cornell Medical College, New York, New York, USA
| | - Jongkil Kim
- Nancy E. and Peter C. Meinig School of Biomedical Engineering, Cornell University, Ithaca, New York, USA
| | - John E Sherman
- Department of Surgery, Laboratory of Bioregenerative Medicine & Surgery, Division of Plastic Surgery, Weill Cornell Medical College, New York, New York, USA
| | - Lawrence J Bonassar
- Nancy E. and Peter C. Meinig School of Biomedical Engineering, Cornell University, Ithaca, New York, USA.,Sibley School of Mechanical and Aerospace Engineering, Cornell University, Ithaca, New York, USA
| | - Jason Spector
- Department of Surgery, Laboratory of Bioregenerative Medicine & Surgery, Division of Plastic Surgery, Weill Cornell Medical College, New York, New York, USA.,Nancy E. and Peter C. Meinig School of Biomedical Engineering, Cornell University, Ithaca, New York, USA
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14
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Tsuji K, Kitamura S, Wada J. Potential Strategies for Kidney Regeneration With Stem Cells: An Overview. Front Cell Dev Biol 2022; 10:892356. [PMID: 35586342 PMCID: PMC9108336 DOI: 10.3389/fcell.2022.892356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Accepted: 04/19/2022] [Indexed: 11/28/2022] Open
Abstract
Kidney diseases are a major health problem worldwide. Despite advances in drug therapies, they are only capable of slowing the progression of kidney diseases. Accordingly, potential kidney regeneration strategies with stem cells have begun to be explored. There are two different directions for regenerative strategies, de novo whole kidney fabrication with stem cells, and stem cell therapy. De novo whole kidney strategies include: 1) decellularized scaffold technology, 2) 3D bioprinting based on engineering technology, 3) kidney organoid fabrication, 4) blastocyst complementation with chimeric technology, and 5) the organogenic niche method. Meanwhile, stem cell therapy strategies include 1) injection of stem cells, including mesenchymal stem cells, nephron progenitor cells, adult kidney stem cells and multi-lineage differentiating stress enduring cells, and 2) injection of protective factors secreted from these stem cells, including growth factors, chemokines, and extracellular vesicles containing microRNAs, mRNAs and proteins. Over the past few decades, there have been remarkable step-by-step developments in these strategies. Here, we review the current advances in the potential strategies for kidney regeneration using stem cells, along with their challenges for possible clinical use in the future.
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A Two-Stage Training Program for Auricular Framework Fabrication Practicing Using Three-Dimensional Printing Silicone Ribs and Porcine Costal Cartilage. J Craniofac Surg 2022; 33:1890-1892. [PMID: 35261369 PMCID: PMC9432808 DOI: 10.1097/scs.0000000000008582] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Accepted: 01/30/2022] [Indexed: 12/02/2022] Open
Abstract
The manufacture of cartilage framework is a key element in the success of total ear reconstruction. Appropriate training can improve cartilage curving and fabricating skills, which is especially helpful for the novice clinicians. Based on threedimensional printing silicone model and porcine rib cartilage, the authors have designed a 2-stage training program to improve skills and cosmetic cognition for ear reconstruction.
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Ross MT, Antico M, McMahon KL, Ren J, Powell SK, Pandey AK, Allenby MC, Fontanarosa D, Woodruff MA. Ultrasound Imaging Offers Promising Alternative to Create 3-D Models for Personalised Auricular Implants. ULTRASOUND IN MEDICINE & BIOLOGY 2022; 48:450-459. [PMID: 34848081 DOI: 10.1016/j.ultrasmedbio.2021.10.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 10/11/2021] [Accepted: 10/15/2021] [Indexed: 06/13/2023]
Abstract
Three-dimensional imaging and advanced manufacturing are being applied in health care research to create novel diagnostic and surgical planning methods, as well as personalised treatments and implants. For ear reconstruction, where a cartilage-shaped implant is embedded underneath the skin to re-create shape and form, volumetric imaging and segmentation processing to capture patient anatomy are particularly challenging. Here, we introduce 3-D ultrasound (US) as an available option for imaging the external ear and underlying auricular cartilage structure, and compare it with computed tomography (CT) and magnetic resonance imaging (MRI) against micro-CT (µCT) as a high-resolution reference (gold standard). US images were segmented to create 3-D models of the auricular cartilage and compared against models generated from µCT to assess accuracy. We found that CT was significantly less accurate than the other methods (root mean square [RMS]: 1.30 ± 0.5 mm) and had the least contrast between tissues. There was no significant difference between MRI (RMS: 0.69 ± 0.2 mm) and US (0.55 ± 0.1 mm). US was also the least expensive imaging method at half the cost of MRI. These results unveil a novel use of ultrasound imaging that has not been presented before, as well as support its more widespread use in biofabrication as a low-cost imaging technique to create patient-specific 3D models and implants.
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Affiliation(s)
- Maureen T Ross
- Faculty of Engineering, Queensland University of Technology (QUT), Brisbane, Queensland, Australia
| | - Maria Antico
- Faculty of Engineering, Queensland University of Technology (QUT), Brisbane, Queensland, Australia
| | - Katie L McMahon
- School of Clinical Sciences, Queensland University of Technology (QUT), Brisbane, Queensland, Australia; Herston Imaging Research Facility, Royal Brisbane and Women's Hospital, Brisbane, Queensland, Australia
| | - Jiongyu Ren
- Faculty of Engineering, Queensland University of Technology (QUT), Brisbane, Queensland, Australia
| | - Sean K Powell
- Faculty of Engineering, Queensland University of Technology (QUT), Brisbane, Queensland, Australia
| | - Ajay K Pandey
- Faculty of Engineering, Queensland University of Technology (QUT), Brisbane, Queensland, Australia
| | - Mark C Allenby
- Faculty of Engineering, Queensland University of Technology (QUT), Brisbane, Queensland, Australia
| | - Davide Fontanarosa
- Faculty of Engineering, Queensland University of Technology (QUT), Brisbane, Queensland, Australia; School of Clinical Sciences, Queensland University of Technology (QUT), Brisbane, Queensland, Australia
| | - Maria A Woodruff
- Faculty of Engineering, Queensland University of Technology (QUT), Brisbane, Queensland, Australia.
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17
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Bhamare N, Tardalkar K, Khadilkar A, Parulekar P, Joshi MG. Tissue engineering of human ear pinna. Cell Tissue Bank 2022; 23:441-457. [PMID: 35103863 DOI: 10.1007/s10561-022-09991-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2021] [Accepted: 01/06/2022] [Indexed: 12/30/2022]
Abstract
Auricular deformities (Microtia) can cause physical, social as well as psychological impacts on a patient's wellbeing. Biofabrication of a complex structure such as ear pinna is not precise with currently available techniques. These limitations can be overcome with the help of tissue engineering. In this article, the authors presented molding and three dimensional (3D) printing to generate a flexible, human size ear pinna. The decellularization of goat ear cartilage protocol and bioink alkaline digestion protocol was followed to yield complete removal of all cellular components without changing the properties of the Extra Cellular Matrix (ECM). Decellularized scaffold used in molding technology and 3D printing technology Computer-Aided Design /Stereolithography (CAD/STL) uses bioink to construct the patient-specific ear. In vivo biocompatibility of the both ear pinnae showed demonstrable recellularization. Histology and scanning electron microscopy analysis revealed the recellularization of cartilage-specific cells and the development of ECM in molded and 3D printed ear pinna after transplantation. Both the techniques provided ideal results for mechanical properties such as elasticity. Vascular Associated Protein expression revealed specific vasculogenic pattern (angiogenesis) in transplanted molded pinna. Chondrocyte specific progenitor cells express CD90+ which highlighted newly developed chondrocytes in both the grafts which indicated that the xenograft was accepted by the rat. Transplantation of molded as well as 3D ear pinna was successful in an animal model and can be available for clinical treatments as a medical object to cure auricular deformities.
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Affiliation(s)
- Nilesh Bhamare
- Department of Stem Cells and Regenerative Medicine, D. Y. Patil Education Society (Deemed to be University), Kasaba Bawada, 416 006, Kolhapur, Maharashtra, India.
| | - Kishor Tardalkar
- Department of Stem Cells and Regenerative Medicine, D. Y. Patil Education Society (Deemed to be University), Kasaba Bawada, 416 006, Kolhapur, Maharashtra, India
| | - Archana Khadilkar
- Department of Biotechnology Engineering, KIT's College of Engineering (Autonomous), Kolhapur, India
| | - Pratima Parulekar
- Department of Biotechnology Engineering, KIT's College of Engineering (Autonomous), Kolhapur, India
| | - Meghnad G Joshi
- Department of Stem Cells and Regenerative Medicine, D. Y. Patil Education Society (Deemed to be University), Kasaba Bawada, 416 006, Kolhapur, Maharashtra, India. .,Stem Plus Biotech Pvt. Ltd.Sangli Miraj Kupwad Commercial Complex, C/S No. 1317/2, Near Shivaji Maharaj Putla, Bus Stand Road,Gaon Bhag, 416416, Sangli, MS, India.
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18
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Bertassoni LE. Bioprinting of Complex Multicellular Organs with Advanced Functionality-Recent Progress and Challenges Ahead. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2101321. [PMID: 35060652 PMCID: PMC10171718 DOI: 10.1002/adma.202101321] [Citation(s) in RCA: 30] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Revised: 04/20/2021] [Indexed: 05/12/2023]
Abstract
Bioprinting has emerged as one of the most promising strategies for fabrication of functional organs in the lab as an alternative to transplant organs. While progress in the field has mostly been restricted to a few miniaturized tissues with minimal biological functionality until a few years ago, recent progress has advanced the concept of building three-dimensional multicellular organ complexity remarkably. This review discusses a series of milestones that have paved the way for bioprinting of tissue constructs that have advanced levels of biological and architectural functionality. Critical materials, engineering and biological challenges that are key to addressing the desirable function of engineered organs are presented. These are discussed in light of the many difficulties to replicate the heterotypic organization of multicellular solid organs, the nanoscale precision of the extracellular microenvironment in hierarchical tissues, as well as the advantages and limitations of existing bioprinting methods to adequately overcome these barriers. In summary, the advances of the field toward realistic manufacturing of functional organs have never been so extensive, and this manuscript serves as a road map for some of the recent progress and the challenges ahead.
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Affiliation(s)
- Luiz E Bertassoni
- Division of Biomaterials and Biomechanics, School of Dentistry, Oregon Health and Science University, Portland, OR, 97201, USA
- Department of Biomedical Engineering, School of Medicine, Oregon Health and Science University, Portland, OR, 97239, USA
- Center for Regenerative Medicine, Oregon Health and Science University, Portland, OR, 97239, USA
- Cancer Early Detection Advanced Research (CEDAR), Knight Cancer Institute, Oregon Health and Science University, Portland, OR, 97239, USA
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19
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Evaluation of the Usability of a Low-Cost 3D Printer in a Tissue Engineering Approach for External Ear Reconstruction. Int J Mol Sci 2021; 22:ijms222111667. [PMID: 34769096 PMCID: PMC8584065 DOI: 10.3390/ijms222111667] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 10/26/2021] [Accepted: 10/27/2021] [Indexed: 02/02/2023] Open
Abstract
The use of alloplastic materials instead of autologous cartilage grafts offers a new perspective in craniofacial reconstructive surgery. Particularly for regenerative approaches, customized implants enable the surgeon to restore the cartilaginous framework of the ear without donor site morbidity. However, high development and production costs of commercially available implants impede clinical translation. For this reason, the usability of a low-cost 3D printer (Ultimaker 2+) as an inhouse-production tool for cheap surgical implants was investigated. The open software architecture of the 3D printer was modified in order to enable printing of biocompatible and biologically degradable polycaprolactone (PCL). Firstly, the printing accuracy and limitations of a PCL implant were compared to reference materials acrylonitrile butadiene styrene (ABS) and polylactic acid (PLA). Then the self-made PCL-scaffold was seeded with adipose-tissue derived stem cells (ASCs), and biocompatibility was compared to a commercially available PCL-scaffold using a cell viability staining (FDA/PI) and a dsDNA quantification assay (PicoGreen). Secondly, porous and solid patient-customized ear constructs were manufactured from mirrored CT-imagining data using a computer-assisted design (CAD) and computer-assisted manufacturing (CAM) approach to evaluate printing accuracy and reproducibility. The results show that printing of a porous PCL scaffolds was possible, with an accuracy equivalent to the reference materials at an edge length of 10 mm and a pore size of 0.67 mm. Cell viability, adhesion, and proliferation of the ASCs were equivalent on self-made and the commercially available PCL-scaffolds. Patient-customized ear constructs could be produced well in solid form and with limited accuracy in porous form from all three thermoplastic materials. Printing dimensions and quality of the modified low-cost 3D printer are sufficient for selected tissue engineering applications, and the manufacturing of personalized ear models for surgical simulation at manufacturing costs of EUR 0.04 per cell culture scaffold and EUR 0.90 (0.56) per solid (porous) ear construct made from PCL. Therefore, in-house production of PCL-based tissue engineering scaffolds and surgical implants should be further investigated to facilitate the use of new materials and 3D printing in daily clinical routine.
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20
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Three-Dimensional Auricular Subunit Models for Cartilage Framework Fabrication: Our Preliminary Experience. J Craniofac Surg 2021; 33:1111-1115. [PMID: 34538787 DOI: 10.1097/scs.0000000000008163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
Abstract
BACKGROUND Three-dimensional (3D) digital imaging and printing techniques have been popularly applied in microtia reconstruction. However, there is a lack of clinical report of using them to create 3D printed ear subunit models for cartilage framework fabrication. METHODS A retrospective study of patients who underwent auricle reconstruction with 3D templates was performed. Patients' demography, surgical complications, framework accuracy, and aesthetic outcomes of the reconstructed auricles were analyzed. RESULTS Twenty cases included in this study. Complications were minor. The average (median) assessing scores for the framework quality and the reconstructed auricle aesthetics were 8.50 (8) and 8.30 (8), respectively. CONCLUSIONS Our study found that the use of custom-printed tridimensional ear subunit models achieved a relatively high framework precision and gained good outcomes of the reconstructed ears.Level of Evidence: Level IV.
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21
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Bhamare N, Tardalkar K, Parulekar P, Khadilkar A, Joshi M. 3D printing of human ear pinna using cartilage specific ink. Biomed Mater 2021; 16. [PMID: 34280915 DOI: 10.1088/1748-605x/ac15b0] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Accepted: 07/19/2021] [Indexed: 11/11/2022]
Abstract
Biofabrication of a complex structure such as ear pinna is not precise with currently available techniques. Auricular deformities (e.g. microtia) can cause physical, social as well as psychological impacts on a patient's wellbeing. Currently available surgical techniques and transplantation methods have many limitations that can be overcome with the help of 3D bioprinting technology. Printable bioink enriched with cartilage-specific extracellular matrix (ECM) synthesis was done by digesting goat ear pinna cartilage and polymerized by adding polyvinyl alcohol and gelatine. Rheological analysis and Fourier-transform infrared spectroscopy were used for the characterization of bioink to get desired viscosity and polymerization. Human ear pinna was printed using extrusion method and computer-aided design, stereolithography software which facilitated the automated printing in relatively less time without continuous monitoring. Thermal degradation of pinna was checked by thermal gravimetric analysis. Biodegradability and swelling of ear pinna were observed for understanding the nature of pinna and the impact of external factors. Reconstructed pinna's biocompatibility was proved byin ovoandin vivostudies. The occurrence of angiogenesis in the grafted ear manifested the capacity of proliferation and engraftment of cartilage cells. Histology and SEM analysis revealed the recellularization and the synthesis of ECM components such as glycosaminoglycan and collagen in transplanted 3D printed ear pinna. The expression of CD90+ which indicated newly synthesized cartilage in the transplanted 3D printed ear pinna. The absence expression of CD14+ also indicated acceptance of xenogenic transplanted 3D printed ear pinna. Transplantation of 3D ear pinna was successful in an animal model and can be utilized as tissue engineered ear bank.
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Affiliation(s)
- Nilesh Bhamare
- Department of Stem Cell and Regenerative Medicine, D. Y. Patil Education Society (Deemed to be University), Kasaba Bawada, Maharashtra 416 006, India
| | - Kishor Tardalkar
- Department of Stem Cell and Regenerative Medicine, D. Y. Patil Education Society (Deemed to be University), Kasaba Bawada, Maharashtra 416 006, India
| | - Pratima Parulekar
- Department of Biotechnology Engineering, KIT's College of Engineering (Autonomous), Gokul-Shirgaon, Maharashtra, India 416 234
| | - Archana Khadilkar
- Department of Biotechnology Engineering, KIT's College of Engineering (Autonomous), Gokul-Shirgaon, Maharashtra, India 416 234
| | - Meghnad Joshi
- Department of Stem Cell and Regenerative Medicine, D. Y. Patil Education Society (Deemed to be University), Kasaba Bawada, Maharashtra 416 006, India.,Stem Plus Biotech Pvt. Ltd, Sangli, Miraj, Kupwad Commercial Complex, C/S No. 1317/2, Near Shivaji Maharaj Putla, Bus Stand Road, Gaon Bhag, Sangli 416 416, Maharashtra, India
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22
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Invitro and Invivo Study of PCL-Hydrogel Scaffold to Advance Bioprinting Translation in Microtia Reconstruction. J Craniofac Surg 2021; 32:1931-1936. [PMID: 33177423 DOI: 10.1097/scs.0000000000007173] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
BACKGROUND Bioprinting has shown promise in the area of microtia reconstruction. However clinical translation has been challenged by the lack of robust techniques to control delivery of stem cells. Hybrid printing allowing multiple materials, both cell and support, to be printed together may overcome these challenges. OBJECTIVE This study assesses the degradation behavior and tissue compatibility of hybrid scaffolds (PCL-Hydrogel) compared to single material Polycaprolactone (PCL) scaffolds in-vitro and in-vivo. Sheep demonstrate similar fascial anatomy to humans. This is the first reported study using a sheep model to study hybrid scaffolds for microtia. METHODS PCL and PCL-Hydrogel samples of increasing porosity were subjected to an accelerated enzymatic degradation assay to study degradation behavior in-vitro. In addition, a 6-month study using Merino-Dorset sheep was conducted to compare the biological reaction of the host to PCL and PCL-hydrogel scaffolds. RESULTS In-vitro degradation showed homogenous degradation of the scaffold. PCL presented the dominating influence on degradation volume compared to hydrogel. In-vivo, there was no evidence of skin irritation or infection over 6 months in both control and test, though PCL-hydrogel scaffolds showed higher levels of tissue ingrowth. CONCLUSION Homogenous degradation pattern of porous scaffolds may create less surrounding tissue irritation. Hybrid scaffolds had good biological compatibility and showed better tissue ingrowth than PCL alone.
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Humphries S, Joshi A, Webb WR, Kanegaonkar R. Auricular reconstruction: where are we now? A critical literature review. Eur Arch Otorhinolaryngol 2021; 279:541-556. [PMID: 34076725 DOI: 10.1007/s00405-021-06903-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Accepted: 05/21/2021] [Indexed: 12/11/2022]
Abstract
PURPOSE Deformities of the external ear can affect psychosocial well-being and hearing. Current gold-standard reconstructive treatment is autologous costal cartilage grafting despite the vast morbidity profile. Tissue engineering using stem cells and 3D printing can create patient-specific reconstructed auricles with superior cosmetic outcomes and reduced morbidity. This review critically analyses recent and breakthrough research in the field of regenerative medicine for the pinna, considering gaps in current literature and suggesting further steps to identify whether this could be the new gold-standard. METHODS A literature review was conducted. PubMed (MEDLINE) and Cochrane databases were searched using key terms regenerative medicine, tissue engineering, 3D printing, biofabrication, auricular reconstruction, auricular cartilage, chondrocyte, outer ear and pinna. Studies in which tissue-engineered auricles were implanted into animal or human subjects were included. Exclusion criteria included articles not in English and not published within the last ten years. Titles, abstracts and full texts were screened. Reference searching was conducted and significant breakthrough studies included. RESULTS 8 studies, 6 animal and 2 human, were selected for inclusion. Strengths and weaknesses of each are discussed. Common limitations include a lack of human studies, small sample sizes and short follow-up times. CONCLUSION Regenerative medicine holds significant potential to improve auricular reconstruction. To date there are no large multi-centred human studies in which tissue-engineered auricles have been implanted. However, recent human studies suggest promising results, raising the ever-growing possibility that tissue engineering is the future of auricular reconstruction. We aim to continue developing knowledge in this field.
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Affiliation(s)
- Sarah Humphries
- Institute of Medical Sciences, Faculty of Medicine, Canterbury Christchurch University, Chatham Maritime, Kent, UK.
| | - Anil Joshi
- Facial Plastics, University Hospital Lewisham, Lewisham, UK
| | - William Richard Webb
- Institute of Medical Sciences, Faculty of Medicine, Canterbury Christchurch University, Chatham Maritime, Kent, UK
| | - Rahul Kanegaonkar
- Institute of Medical Sciences, Faculty of Medicine, Canterbury Christchurch University, Chatham Maritime, Kent, UK
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3D Printing and NIR Fluorescence Imaging Techniques for the Fabrication of Implants. MATERIALS 2020; 13:ma13214819. [PMID: 33126650 PMCID: PMC7662749 DOI: 10.3390/ma13214819] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Revised: 10/19/2020] [Accepted: 10/27/2020] [Indexed: 12/17/2022]
Abstract
Three-dimensional (3D) printing technology holds great potential to fabricate complex constructs in the field of regenerative medicine. Researchers in the surgical fields have used 3D printing techniques and their associated biomaterials for education, training, consultation, organ transplantation, plastic surgery, surgical planning, dentures, and more. In addition, the universal utilization of 3D printing techniques enables researchers to exploit different types of hardware and software in, for example, the surgical fields. To realize the 3D-printed structures to implant them in the body and tissue regeneration, it is important to understand 3D printing technology and its enabling technologies. This paper concisely reviews 3D printing techniques in terms of hardware, software, and materials with a focus on surgery. In addition, it reviews bioprinting technology and a non-invasive monitoring method using near-infrared (NIR) fluorescence, with special attention to the 3D-bioprinted tissue constructs. NIR fluorescence imaging applied to 3D printing technology can play a significant role in monitoring the therapeutic efficacy of 3D structures for clinical implants. Consequently, these techniques can provide individually customized products and improve the treatment outcome of surgeries.
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25
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Servi M, Buonamici F, Carfagni M, Volpe Y, Facchini F, Ghionzoli M, Messineo A. CAD-based automatic modelling of customized cutting templates for Pectus Arcuatum surgical correction. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2020; 2020:6044-6048. [PMID: 33019349 DOI: 10.1109/embc44109.2020.9175824] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Pectus Arcuatum (PA) is a congenital chest wall deformity which produces a superior manubrial and sternal protrusion, particularly at the sternal angle. PA surgical correction to reduce the angle of the sternum always includes the removal of bone portion by means of horizontal sternal osteotomies, resection of deformed rib cartilage and finally stabilization of the anterior thoracic wall. Within this process an incorrect assessment of the sternotomy angle during the procedure may lead to the need for bone or cartilage grafts to fill the left voids. This problem has been addressed with a patient-specific cutting template, realized with Reverse Engineering and Additive Manufacturing techniques, which proved to be a key element to simplify the procedure and avoid the occurrence of this type of complications. In this work is presented and validated a procedure that, through common CAD operations, realizes in a completely automatic way the CAD model of the custom cutting template, so as to make non-expert users independent in the realization of the medical device.
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26
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Santarelli C, Argenti F, Uccheddu F, Alparone L, Carfagni M. Volumetric interpolation of tomographic sequences for accurate 3D reconstruction of anatomical parts. COMPUTER METHODS AND PROGRAMS IN BIOMEDICINE 2020; 194:105525. [PMID: 32403050 DOI: 10.1016/j.cmpb.2020.105525] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Revised: 03/16/2020] [Accepted: 04/28/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND AND OBJECTIVE Tomographic sequences of biomedical images are commonly used to achieve a three-dimensional visualization of the human anatomy. In some cases, the number of images contained in the sequence is limited, e.g., in low-dose computed tomography acquired on neonatal patients, resulting in a coarse and inaccurate 3D reconstruction. METHODS In this paper, volumetric image interpolation methods, devised to increase the axial resolution of tomographic sequences and achieve a refined 3D reconstruction, are proposed and compared. The techniques taken into consideration are based on motion-compensated frame-interpolation concepts, which have been developed for video applications, mainly frame-rate conversion. RESULTS The performance of the proposed methods is quantitatively assessed by using sequences with a simulated low axial resolution obtained from the decimation of standard high-resolution computed tomography sequences. Real data with an actual low axial resolution have been used as well for a qualitative evaluation of the proposed methods. CONCLUSIONS The experimental results demonstrate that the proposed methods enable an effective slice interpolation and that the achievable 3D models clearly benefit from the increased axial resolution.
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Affiliation(s)
- Chiara Santarelli
- Department of Information Engineering, University of Florence, Via di Santa Marta, Florence 3 - 50139, Italy; Department of Industrial Engineering, University of Florence, Via di Santa Marta, Florence 3 - 50139, Italy.
| | - Fabrizio Argenti
- Department of Information Engineering, University of Florence, Via di Santa Marta, Florence 3 - 50139, Italy.
| | - Francesca Uccheddu
- Department of Industrial Engineering, University of Florence, Via di Santa Marta, Florence 3 - 50139, Italy.
| | - Luciano Alparone
- Department of Information Engineering, University of Florence, Via di Santa Marta, Florence 3 - 50139, Italy.
| | - Monica Carfagni
- Department of Industrial Engineering, University of Florence, Via di Santa Marta, Florence 3 - 50139, Italy.
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27
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Peng W, Peng Z, Tang P, Sun H, Lei H, Li Z, Hui D, Du C, Zhou C, Wang Y. Review of Plastic Surgery Biomaterials and Current Progress in Their 3D Manufacturing Technology. MATERIALS 2020; 13:ma13184108. [PMID: 32947925 PMCID: PMC7560273 DOI: 10.3390/ma13184108] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Revised: 09/11/2020] [Accepted: 09/14/2020] [Indexed: 02/05/2023]
Abstract
Plastic surgery is a broad field, including maxillofacial surgery, skin flaps and grafts, liposuction and body contouring, breast surgery, and facial cosmetic procedures. Due to the requirements of plastic surgery for the biological safety of materials, biomaterials are widely used because of its superior biocompatibility and biodegradability. Currently, there are many kinds of biomaterials clinically used in plastic surgery and their applications are diverse. Moreover, with the rise of three-dimensional printing technology in recent years, the macroscopically more precise and personalized bio-scaffolding materials with microporous structure have made good progress, which is thought to bring new development to biomaterials. Therefore, in this paper, we reviewed the plastic surgery biomaterials and current progress in their 3D manufacturing technology.
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Affiliation(s)
- Wei Peng
- Department of Palliative Care, West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu 610041, China;
- Occupational Health Emergency Key Laboratory of West China Fourth Hospital, Sichuan University, Chengdu 610041, China
| | - Zhiyu Peng
- Department of Thoracic Surgery, West China School of Medicine, West China Hospital, Sichuan University, Chengdu 610041, China;
| | - Pei Tang
- Department of Burn and Plastic Surgery, West China School of Medicine, West China Hospital, Sichuan University, Chengdu 610041, China; (P.T.); (Z.L.)
| | - Huan Sun
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, China; (H.S.); (H.L.); (C.Z.)
| | - Haoyuan Lei
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, China; (H.S.); (H.L.); (C.Z.)
| | - Zhengyong Li
- Department of Burn and Plastic Surgery, West China School of Medicine, West China Hospital, Sichuan University, Chengdu 610041, China; (P.T.); (Z.L.)
| | - Didi Hui
- Innovatus Oral Cosmetic & Surgical Institute, Norman, OK 73069, USA; (D.H.); (C.D.)
| | - Colin Du
- Innovatus Oral Cosmetic & Surgical Institute, Norman, OK 73069, USA; (D.H.); (C.D.)
| | - Changchun Zhou
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, China; (H.S.); (H.L.); (C.Z.)
| | - Yongwei Wang
- Department of Palliative Care, West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu 610041, China;
- Occupational Health Emergency Key Laboratory of West China Fourth Hospital, Sichuan University, Chengdu 610041, China
- Correspondence:
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Smith C, van der Woerd B, Potra R, Ferreira L, Moore C. Robot-Automated Cartilage Contouring for Complex Ear Reconstruction: A Cadaveric Study. Laryngoscope 2020; 131:1002-1007. [PMID: 32915996 DOI: 10.1002/lary.29058] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Revised: 07/11/2020] [Accepted: 08/08/2020] [Indexed: 11/06/2022]
Abstract
OBJECTIVES/HYPOTHESIS Auricular reconstruction requiring manual contouring of costal cartilage is complex and time consuming, which could be facilitated by a robot in a fast and precise manner. This feasibility study evaluates the accuracy and speed of robotic contouring of cadaver costal cartilage. METHODS An augmented robot with a spherical burr was used on cadaveric rib cartilage. Using a laser scanner, each rib section was converted to a three-dimensional model for preoperative planning. A model ear was also scanned to define a carving path for each piece of cartilage. After being contoured, each specimen was compared against the preoperative plan utilizing deviation maps to analyze topographic accuracy. Contouring times of the robot were compared with 13 retrospectively reviewed cases (2006-2017) by an experienced surgeon. RESULTS Scanning the cartilage sections took 24.8 ± 6.8 seconds. Preoperative processing took an additional 29.9 ± 8.9 seconds for the preparation of the contouring path. Once the path was prepared, the robot contoured the specimens with a root mean square error of 0.54 mm and a mean absolute deviation of 0.40 mm. The average time to contour the specimens with the robot was 13 ± 2 minutes compared to 71 ± 6 minutes for the manual contouring in the reviewed cases. CONCLUSIONS The accuracy of the robotic system was high, with submillimeter deviations from the preoperative plan. The robot required <20% of the contouring time compared to the experienced surgeon. This represents a fast and accurate alternative to hand-contouring costal cartilage grafts for auricular reconstruction. Laryngoscope, 131:1002-1007, 2021.
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Affiliation(s)
- Corey Smith
- Department of Mechanical and Materials Engineering, The University of Western Ontario, London, Ontario, Canada
| | - Benjamin van der Woerd
- Department of Otolaryngology-Head and Neck Surgery, The University of Western Ontario, London, Ontario, Canada
| | - Robert Potra
- Department of Mechanical and Materials Engineering, The University of Western Ontario, London, Ontario, Canada
| | - Louis Ferreira
- Department of Mechanical and Materials Engineering, The University of Western Ontario, London, Ontario, Canada
| | - Corey Moore
- Department of Otolaryngology-Head and Neck Surgery, The University of Western Ontario, London, Ontario, Canada
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Hwang K. White radish and swine scapular cartilage models for auricular framework carving training. Arch Craniofac Surg 2020; 21:225-228. [PMID: 32867411 PMCID: PMC7463128 DOI: 10.7181/acfs.2020.00297] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Accepted: 08/12/2020] [Indexed: 11/25/2022] Open
Abstract
Background The aim of this study is to develop a two-stage training module using radish and swine scapular cartilage for carving ear cartilage. Methods In the first stage, white radish was cut in 3–6 mm thick slices. The ear cartilage framework was carved using a graver and the helix and antihelix were fixed with pins. In the second stage, swine scapular cartilage was obtained. The thickness varied 3–6 mm. The ear cartilage framework was made. And triangular fossa and scaphoid fossa were carved with graver. A curvilinear cartilage for helix was assembled to the framework by pin fixing. Six participants were recruited for an ear reconstruction training workshop and figures of the cartilage framework were provided. Participants were asked answer the pre-workshop questionnaire and post-workshop questionnaire on a Likert scale to rate their satisfaction with the outcome. Results On the pre-workshop questionnaire, participants indicated that they did not have sufficient knowledge and skill for fabricating the ear cartilage framework (1.5± 0.5 using white radish; 1.3 ± 0.5 using swine scapular cartilage). On the post-workshop questionnaire, participants responded that they had learned useful knowledge from this workshop, reflecting a significant improvement (3.8± 1.0 using white radish; 4.0± 1.1 using swine scapular cartilage). They also indicated that they had become somewhat confident in this skill (4.2± 0.8 using white radish; 4.3± 0.5 using swine scapular cartilage. The participants generally found the workshop satisfactory (practically helpful, 4.7± 0.5; knowledge improved, 4.8± 0.4; satisfied with course, 4.5± 0.5; would recommend to others, 4.8± 0.4). Conclusion This model can be useful for ear reconstruction training for medical personnel.
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Affiliation(s)
- Kun Hwang
- Department of Plastic Surgery, Inha University School of Medicine, Incheon, Korea
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Jovic TH, Combellack EJ, Jessop ZM, Whitaker IS. Using 3D Printing Technology to Teach Cartilage Framework Carving for Ear Reconstruction. Front Surg 2020; 7:44. [PMID: 32766275 PMCID: PMC7380086 DOI: 10.3389/fsurg.2020.00044] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Accepted: 06/10/2020] [Indexed: 01/21/2023] Open
Abstract
Objective: The aim of this study was to determine the validity of using a carvable 3D printed rib model in combination with a 3D printed auricular framework to facilitate the teaching, training and planning of auricular reconstruction. Design: 3D printed costal cartilages from ribs 6-9 were produced using a FormLabs Form3 Printer and used to make negative molds. 2:1 silicone-cornstarch mixture was added to each mold to make 12 simulated 6-9th costal cartilages suitable for carving. 3D printed auricular frameworks were produced in polylactic acid using an Ultimaker 3 3D printer to demonstrate the component parts and constructed framework of an auricular reconstruction. Participants: Twelve plastic surgery trainees attended a workshop in which they each attempted auricular reconstruction using the carvable models and 3D printed plastic models as a guide. All candidates completed a pre- and post-training questionnaire to assess confidence and comprehension of auricular reconstruction, and the suitability of the models for facilitating this teaching. Results: Only 42% of trainees (n = 5) had observed an ear reconstruction in theater prior to the training course. Statistically significant improvements in the appreciation of the different components that make an auricular framework (p < 0.0001) and confidence in carving and handling costal cartilage (p < 0.0001) were noted following completion of the training. Highly significant improvements in comprehension of the approach to ear reconstruction (p = 0.006) and locating the subunits of a reconstructed ear from costal cartilage (p = 0.003) were also noted. 100% of participants felt the 3D printed teaching aids directly enhanced their learning. Conclusions: Ear reconstruction is a complex, time consuming multi-stage operation demanding significant amounts of experience, planning and an appreciation of the 3D chondrocutaneous structure. In this study we have demonstrated the value of 3D printing in producing a suitable simulated costal cartilage model and as an adjunct to comprehending and planning a framework for auricular reconstruction.
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Affiliation(s)
- Thomas H Jovic
- Reconstructive Surgery and Regenerative Medicine Research Group, Swansea University, Swansea, United Kingdom.,Welsh Centre for Burns and Plastic Surgery, Morriston Hospital, Swansea, United Kingdom
| | - Emman J Combellack
- Reconstructive Surgery and Regenerative Medicine Research Group, Swansea University, Swansea, United Kingdom.,Welsh Centre for Burns and Plastic Surgery, Morriston Hospital, Swansea, United Kingdom
| | - Zita M Jessop
- Reconstructive Surgery and Regenerative Medicine Research Group, Swansea University, Swansea, United Kingdom.,Welsh Centre for Burns and Plastic Surgery, Morriston Hospital, Swansea, United Kingdom
| | - Iain S Whitaker
- Reconstructive Surgery and Regenerative Medicine Research Group, Swansea University, Swansea, United Kingdom.,Welsh Centre for Burns and Plastic Surgery, Morriston Hospital, Swansea, United Kingdom
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Childs RD, Nakao H, Isogai N, Murthy A, Landis WJ. An analytical study of neocartilage from microtia and otoplasty surgical remnants: A possible application for BMP7 in microtia development and regeneration. PLoS One 2020; 15:e0234650. [PMID: 32555733 PMCID: PMC7299323 DOI: 10.1371/journal.pone.0234650] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Accepted: 05/30/2020] [Indexed: 02/07/2023] Open
Abstract
To investigate auricular reconstruction by tissue engineering means, this study compared cartilage regenerated from human chondrocytes obtained from either microtia or normal (conchal) tissues discarded from otoplasties. Isolated cells were expanded in vitro, seeded onto nanopolyglycolic acid (nanoPGA) sheets with or without addition of bone morphogenetic protein-7 (BMP7), and implanted in nude mice for 10 weeks. On specimen harvest, cartilage development was assessed by gross morphology, histology, and RT-qPCR and microarray analyses. Neocartilages from normal and microtia surgical tissues were found equivalent in their dimensions, qualitative degree of proteoglycan and elastic fiber staining, and quantitative gene expression levels of types II and III collagen, elastin, and SOX5. Microarray analysis, applied for the first time for normal and microtia neocartilage comparison, yielded no genes that were statistically significantly different in expression between these two sample groups. These results support use of microtia tissue as a cell source for normal auricular reconstruction. Comparison of normal and microtia cells, each seeded on nanoPGA and supplemented with BMP7 in a slow-release hydrogel, showed statistically significant differences in certain genes identified by microarray analysis. Such differences were also noted in several analyses comparing counterpart seeded cells without BMP7. Summary data suggest a possible application for BMP7 in microtia cartilage regeneration and encourage further studies to elucidate whether such genotypic differences translate to phenotypic characteristics of the human microtic ear. The present work advances understanding relevant to the potential clinical use of microtia surgical remnants as a suitable cell source for tissue engineering of the pinna.
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Affiliation(s)
- Robin DiFeo Childs
- Department of Polymer Science, University of Akron, Akron, Ohio, United States of America
- Department of Plastic and Reconstructive Surgery, Kindai University Medical School, Osaka sayama, Osaka, Japan
| | - Hitomi Nakao
- Division of Plastic and Reconstructive Surgery, Children’s Hospital Medical Center, Akron, Ohio, United States of America
| | - Noritaka Isogai
- Division of Plastic and Reconstructive Surgery, Children’s Hospital Medical Center, Akron, Ohio, United States of America
| | - Ananth Murthy
- Department of Plastic and Reconstructive Surgery, Kindai University Medical School, Osaka sayama, Osaka, Japan
| | - William J. Landis
- Department of Polymer Science, University of Akron, Akron, Ohio, United States of America
- * E-mail:
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Pakhomova C, Popov D, Maltsev E, Akhatov I, Pasko A. Software for Bioprinting. Int J Bioprint 2020; 6:279. [PMID: 33088988 PMCID: PMC7557344 DOI: 10.18063/ijb.v6i3.279] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2020] [Accepted: 04/24/2020] [Indexed: 02/07/2023] Open
Abstract
The bioprinting of heterogeneous organs is a crucial issue. To reach the complexity of such organs, there is a need for highly specialized software that will meet all requirements such as accuracy, complexity, and others. The primary objective of this review is to consider various software tools that are used in bioprinting and to reveal their capabilities. The sub-objective was to consider different approaches for the model creation using these software tools. Related articles on this topic were analyzed. Software tools are classified based on control tools, general computer-aided design (CAD) tools, tools to convert medical data to CAD formats, and a few highly specialized research-project tools. Different geometry representations are considered, and their advantages and disadvantages are considered applicable to heterogeneous volume modeling and bioprinting. The primary factor for the analysis is suitability of the software for heterogeneous volume modeling and bioprinting or multimaterial three-dimensional printing due to the commonality of these technologies. A shortage of specialized suitable software tools is revealed. There is a need to develop a new application area such as computer science for bioprinting which can contribute significantly in future research work.
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Affiliation(s)
- Catherine Pakhomova
- Center for Design, Manufacturing and Materials, Skolkovo Institute of Science and Technology, Moscow.,Institute of Engineering Physics for Biomedicine, NRNU Mephi, Moscow
| | - Dmitry Popov
- Center for Design, Manufacturing and Materials, Skolkovo Institute of Science and Technology, Moscow
| | - Eugenii Maltsev
- Center for Design, Manufacturing and Materials, Skolkovo Institute of Science and Technology, Moscow
| | - Iskander Akhatov
- Center for Design, Manufacturing and Materials, Skolkovo Institute of Science and Technology, Moscow
| | - Alexander Pasko
- Center for Design, Manufacturing and Materials, Skolkovo Institute of Science and Technology, Moscow.,The National Centre for Computer Animation, Bournemouth University, UK
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Mussi E, Mussa F, Santarelli C, Scagnet M, Uccheddu F, Furferi R, Volpe Y, Genitori L. Current Practice in Preoperative Virtual and Physical Simulation in Neurosurgery. Bioengineering (Basel) 2020; 7:bioengineering7010007. [PMID: 31947718 PMCID: PMC7175342 DOI: 10.3390/bioengineering7010007] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Revised: 12/27/2019] [Accepted: 01/01/2020] [Indexed: 01/17/2023] Open
Abstract
In brain tumor surgery, an appropriate and careful surgical planning process is crucial for surgeons and can determine the success or failure of the surgery. A deep comprehension of spatial relationships between tumor borders and surrounding healthy tissues enables accurate surgical planning that leads to the identification of the optimal and patient-specific surgical strategy. A physical replica of the region of interest is a valuable aid for preoperative planning and simulation, allowing the physician to directly handle the patient’s anatomy and easily study the volumes involved in the surgery. In the literature, different anatomical models, produced with 3D technologies, are reported and several methodologies were proposed. Many of them share the idea that the employment of 3D printing technologies to produce anatomical models can be introduced into standard clinical practice since 3D printing is now considered to be a mature technology. Therefore, the main aim of the paper is to take into account the literature best practices and to describe the current workflow and methodology used to standardize the pre-operative virtual and physical simulation in neurosurgery. The main aim is also to introduce these practices and standards to neurosurgeons and clinical engineers interested in learning and implementing cost-effective in-house preoperative surgical planning processes. To assess the validity of the proposed scheme, four clinical cases of preoperative planning of brain cancer surgery are reported and discussed. Our preliminary results showed that the proposed methodology can be applied effectively in the neurosurgical clinical practice both in terms of affordability and in terms of simulation realism and efficacy.
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Affiliation(s)
- Elisa Mussi
- Department of Industrial Engineering, University of Florence, via di Santa Marta, 3, 50139 Firenze, Italy; (C.S.); (F.U.); (R.F.); (Y.V.)
- Correspondence: ; Tel.: + 39-055-2758703
| | - Federico Mussa
- Department of Pediatric Surgery, Meyer Children’s Hospital, Viale Pieraccini 24, 50141 Florence, Italy; (F.M.); (L.G.)
| | - Chiara Santarelli
- Department of Industrial Engineering, University of Florence, via di Santa Marta, 3, 50139 Firenze, Italy; (C.S.); (F.U.); (R.F.); (Y.V.)
| | - Mirko Scagnet
- Department of Pediatric Surgery, Meyer Children’s Hospital, Viale Pieraccini 24, 50141 Florence, Italy; (F.M.); (L.G.)
| | - Francesca Uccheddu
- Department of Industrial Engineering, University of Florence, via di Santa Marta, 3, 50139 Firenze, Italy; (C.S.); (F.U.); (R.F.); (Y.V.)
| | - Rocco Furferi
- Department of Industrial Engineering, University of Florence, via di Santa Marta, 3, 50139 Firenze, Italy; (C.S.); (F.U.); (R.F.); (Y.V.)
| | - Yary Volpe
- Department of Industrial Engineering, University of Florence, via di Santa Marta, 3, 50139 Firenze, Italy; (C.S.); (F.U.); (R.F.); (Y.V.)
| | - Lorenzo Genitori
- Department of Pediatric Surgery, Meyer Children’s Hospital, Viale Pieraccini 24, 50141 Florence, Italy; (F.M.); (L.G.)
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3D Acquisition of the Ear Anatomy: A Low-Cost Set up Suitable for the Clinical Practice. ACTA ACUST UNITED AC 2019. [DOI: 10.1007/978-3-030-31635-8_80] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/04/2023]
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