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Wei Y, Li L, Xie C, Wei Y, Huang C, Wang Y, Zhou J, Jia C, Junlin L. Current Status of Auricular Reconstruction Strategy Development. J Craniofac Surg 2023:00001665-990000000-01239. [PMID: 37983309 DOI: 10.1097/scs.0000000000009908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2023] [Accepted: 10/27/2023] [Indexed: 11/22/2023] Open
Abstract
Microtia has severe physical and psychological impacts on patients, and auricular reconstruction offers improved esthetics and function, alleviating psychological issues. Microtia is a congenital disease caused by a multifactorial interaction of environmental and genetic factors, with complex clinical manifestations. Classification assessment aids in determining treatment strategies. Auricular reconstruction is the primary treatment for severe microtia, focusing on the selection of auricular scaffold materials, the construction of auricular morphology, and skin and soft tissue scaffold coverage. Autologous rib cartilage and synthetic materials are both used as scaffold materials for auricular reconstruction, each with advantages and disadvantages. Methods for achieving skin and soft tissue scaffold coverage have been developed to include nonexpansion and expansion techniques. In recent years, the application of digital auxiliary technology such as finite element analysis has helped optimize surgical outcomes and reduce complications. Tissue-engineered cartilage scaffolds and 3-dimensional bioprinting technology have rapidly advanced in the field of ear reconstruction. This article discusses the prevalence and classification of microtia, the selection of auricular scaffolds, the evolution of surgical methods, and the current applications of digital auxiliary technology in ear reconstruction, with the aim of providing clinical physicians with a reference for individualized ear reconstruction surgery. The focus of this work is on the current applications and challenges of tissue engineering and 3-dimensional bioprinting technology in the field of ear reconstruction, as well as future prospects.
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Affiliation(s)
- Yi Wei
- Center of Burn and Plastic and Wound Healing Surgery, The First Affiliated Hospital, Hengyang Medical School, University of South China
| | - Li Li
- Department of Obstetrics and Gynecology, The First Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang, Hunan
| | - Cong Xie
- Center of Burn and Plastic and Wound Healing Surgery, The First Affiliated Hospital, Hengyang Medical School, University of South China
| | - Yangchen Wei
- Center of Burn and Plastic and Wound Healing Surgery, The First Affiliated Hospital, Hengyang Medical School, University of South China
| | - Chufei Huang
- Center of Burn and Plastic and Wound Healing Surgery, The First Affiliated Hospital, Hengyang Medical School, University of South China
| | - Yiping Wang
- Center of Burn and Plastic and Wound Healing Surgery, The First Affiliated Hospital, Hengyang Medical School, University of South China
| | - Jianda Zhou
- Departments of Plastic and Reconstructive Surgery, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Chiyu Jia
- Center of Burn and Plastic and Wound Healing Surgery, The First Affiliated Hospital, Hengyang Medical School, University of South China
| | - Liao Junlin
- Center of Burn and Plastic and Wound Healing Surgery, The First Affiliated Hospital, Hengyang Medical School, University of South China
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Zhou C, Shunji C, Jinsheng D, Junlin L, Jori G, Milanesi C. Apoptosis of mouse MS-2 fibrosarcoma cells induced by photodynamic therapy with Zn (II)-phthalocyanine. J Photochem Photobiol B 1996; 33:219-23. [PMID: 8683397 DOI: 10.1016/1011-1344(95)07250-0] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
The destructive process of mouse MS-2 fibrosarcoma induced by photodynamic therapy (PDT) with liposome-administered Zn(II)-phthalocyanine (ZnPc) was studied by electron microscopy. Pronounced ultrastructural changes characteristic of apoptosis were observed for several tumour cells, including early occurrence of condensation and margination of chromatin, disappearance of nuclear pores, karyopyknosis, karyorrhexis, protuberance formation at the cell surface and cell fragmentation. The findings indicate that apoptosis was involved in the process of tumour cell death induced by ZnPc-PDT. The detailed mechanism and pathways controlling this phenomenon need to be elucidated further.
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Affiliation(s)
- C Zhou
- Laboratory of Electron Microscopy, Chinese Academy of Medical Sciences, Beijing, People's Republic of China
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