Regeneration of trachea graft with cartilage support, vascularization, and epithelization

[Display omitted] The repair and functional reconstruction of long-segment tracheal defects is always a great challenge in the clinic. Finding an ideal substitute for tracheal transplantation is the only way to solve this problem. The current study proposed a series of novel strategies for construct...

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Veröffentlicht in:Acta biomaterialia 2019-04, Vol.89, p.206-216
Hauptverfasser: Li, Dan, Yin, Zongqi, Liu, Yi, Feng, Shaoqing, Liu, Yu, Lu, Fangjia, Xu, Yong, Min, Peiru, Hou, Mengjie, Li, Ke, He, Aijuan, Zhang, Wenjie, Liu, Wei, Zhang, Yixin, Zhou, Guangdong, Cao, Yilin
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container_title Acta biomaterialia
container_volume 89
creator Li, Dan
Yin, Zongqi
Liu, Yi
Feng, Shaoqing
Liu, Yu
Lu, Fangjia
Xu, Yong
Min, Peiru
Hou, Mengjie
Li, Ke
He, Aijuan
Zhang, Wenjie
Liu, Wei
Zhang, Yixin
Zhou, Guangdong
Cao, Yilin
description [Display omitted] The repair and functional reconstruction of long-segment tracheal defects is always a great challenge in the clinic. Finding an ideal substitute for tracheal transplantation is the only way to solve this problem. The current study proposed a series of novel strategies for constructing a bionic living trachea substitute. For the issue of tubular cartilage support, cartilage sheet technique based on high-density culture of chondrocytes was adopted to avoid the inflammatory reaction triggered by the materials and thus formed mature cartilage-like tissue in autologous goat model. For the issue of epithelialization, the autologous transplantation of oral mucosal epithelium was used to realize mucosa coverage of the constructed trachea lumen. Finally, the flat trapezius fascia flap with double blood supply was separated by microsurgical techniques to achieve stable pre-vascularization of both the regenerated cartilage and the grafted epithelium simultaneously. By integrating the above strategies, the vascularized and epithelialized tracheal substitute with tubular cartilage support was successfully constructed in a goat model. The reconstructed trachea possessed a multiple layer structure of muscle-cartilage-fascia-mucosa comparable to the native trachea, and thus might realize stable survival and long-term airway function maintenance, providing a promising tracheal substitute for the repair and permanent functional reconstruction of long-segment tracheal defects. The repair of long-segment tracheal defects is always a great challenge in the clinic. Finding an ideal substitute for tracheal transplantation is the only way to solve this problem. In the current study, by technical integration of cartilage regeneration, microsurgery, and oral mucosa transplantation, a complex tracheal substitute with satisfactory vascularization, epithelialization, and tubular cartilage support was successfully constructed in a goat autologous model. The reconstructed trachea substitute possessed a multiple layer structure of muscle-cartilage-fascia-mucosa exactly similar to native trachea, and thus might realize stable survival and long-term airway function maintenance. The current study provides feasible strategies and ideal tracheal substitutes for permanent functional reconstruction of long-segmental trachea defects.
doi_str_mv 10.1016/j.actbio.2019.03.003
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Finding an ideal substitute for tracheal transplantation is the only way to solve this problem. The current study proposed a series of novel strategies for constructing a bionic living trachea substitute. For the issue of tubular cartilage support, cartilage sheet technique based on high-density culture of chondrocytes was adopted to avoid the inflammatory reaction triggered by the materials and thus formed mature cartilage-like tissue in autologous goat model. For the issue of epithelialization, the autologous transplantation of oral mucosal epithelium was used to realize mucosa coverage of the constructed trachea lumen. Finally, the flat trapezius fascia flap with double blood supply was separated by microsurgical techniques to achieve stable pre-vascularization of both the regenerated cartilage and the grafted epithelium simultaneously. By integrating the above strategies, the vascularized and epithelialized tracheal substitute with tubular cartilage support was successfully constructed in a goat model. The reconstructed trachea possessed a multiple layer structure of muscle-cartilage-fascia-mucosa comparable to the native trachea, and thus might realize stable survival and long-term airway function maintenance, providing a promising tracheal substitute for the repair and permanent functional reconstruction of long-segment tracheal defects. The repair of long-segment tracheal defects is always a great challenge in the clinic. Finding an ideal substitute for tracheal transplantation is the only way to solve this problem. In the current study, by technical integration of cartilage regeneration, microsurgery, and oral mucosa transplantation, a complex tracheal substitute with satisfactory vascularization, epithelialization, and tubular cartilage support was successfully constructed in a goat autologous model. The reconstructed trachea substitute possessed a multiple layer structure of muscle-cartilage-fascia-mucosa exactly similar to native trachea, and thus might realize stable survival and long-term airway function maintenance. The current study provides feasible strategies and ideal tracheal substitutes for permanent functional reconstruction of long-segmental trachea defects.</description><identifier>ISSN: 1742-7061</identifier><identifier>EISSN: 1878-7568</identifier><identifier>DOI: 10.1016/j.actbio.2019.03.003</identifier><identifier>PMID: 30867137</identifier><language>eng</language><publisher>England: Elsevier Ltd</publisher><subject>Animals ; Autografts ; Bionics ; Cartilage ; Cartilage - metabolism ; Cartilage - pathology ; Cartilage - transplantation ; Cartilage regeneration ; Chondrocytes ; Chondrocytes - metabolism ; Chondrocytes - pathology ; Construction ; Defects ; Epithelium ; Epithelization ; Fascia ; Feasibility studies ; Female ; Goats ; Inflammation ; Knee ; Male ; Microsurgery ; Mucosa ; Muscles ; Neovascularization, Physiologic ; Reconstruction ; Regeneration ; Repair ; Respiratory tract ; Substitutes ; Surgery ; Survival ; Tissue engineering ; Trachea ; Trachea - physiology ; Tracheal reconstruction ; Transplantation ; Vascularization</subject><ispartof>Acta biomaterialia, 2019-04, Vol.89, p.206-216</ispartof><rights>2019 Acta Materialia Inc.</rights><rights>Copyright © 2019 Acta Materialia Inc. 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Finding an ideal substitute for tracheal transplantation is the only way to solve this problem. The current study proposed a series of novel strategies for constructing a bionic living trachea substitute. For the issue of tubular cartilage support, cartilage sheet technique based on high-density culture of chondrocytes was adopted to avoid the inflammatory reaction triggered by the materials and thus formed mature cartilage-like tissue in autologous goat model. For the issue of epithelialization, the autologous transplantation of oral mucosal epithelium was used to realize mucosa coverage of the constructed trachea lumen. Finally, the flat trapezius fascia flap with double blood supply was separated by microsurgical techniques to achieve stable pre-vascularization of both the regenerated cartilage and the grafted epithelium simultaneously. By integrating the above strategies, the vascularized and epithelialized tracheal substitute with tubular cartilage support was successfully constructed in a goat model. The reconstructed trachea possessed a multiple layer structure of muscle-cartilage-fascia-mucosa comparable to the native trachea, and thus might realize stable survival and long-term airway function maintenance, providing a promising tracheal substitute for the repair and permanent functional reconstruction of long-segment tracheal defects. The repair of long-segment tracheal defects is always a great challenge in the clinic. Finding an ideal substitute for tracheal transplantation is the only way to solve this problem. In the current study, by technical integration of cartilage regeneration, microsurgery, and oral mucosa transplantation, a complex tracheal substitute with satisfactory vascularization, epithelialization, and tubular cartilage support was successfully constructed in a goat autologous model. The reconstructed trachea substitute possessed a multiple layer structure of muscle-cartilage-fascia-mucosa exactly similar to native trachea, and thus might realize stable survival and long-term airway function maintenance. 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Finding an ideal substitute for tracheal transplantation is the only way to solve this problem. The current study proposed a series of novel strategies for constructing a bionic living trachea substitute. For the issue of tubular cartilage support, cartilage sheet technique based on high-density culture of chondrocytes was adopted to avoid the inflammatory reaction triggered by the materials and thus formed mature cartilage-like tissue in autologous goat model. For the issue of epithelialization, the autologous transplantation of oral mucosal epithelium was used to realize mucosa coverage of the constructed trachea lumen. Finally, the flat trapezius fascia flap with double blood supply was separated by microsurgical techniques to achieve stable pre-vascularization of both the regenerated cartilage and the grafted epithelium simultaneously. By integrating the above strategies, the vascularized and epithelialized tracheal substitute with tubular cartilage support was successfully constructed in a goat model. The reconstructed trachea possessed a multiple layer structure of muscle-cartilage-fascia-mucosa comparable to the native trachea, and thus might realize stable survival and long-term airway function maintenance, providing a promising tracheal substitute for the repair and permanent functional reconstruction of long-segment tracheal defects. The repair of long-segment tracheal defects is always a great challenge in the clinic. Finding an ideal substitute for tracheal transplantation is the only way to solve this problem. In the current study, by technical integration of cartilage regeneration, microsurgery, and oral mucosa transplantation, a complex tracheal substitute with satisfactory vascularization, epithelialization, and tubular cartilage support was successfully constructed in a goat autologous model. The reconstructed trachea substitute possessed a multiple layer structure of muscle-cartilage-fascia-mucosa exactly similar to native trachea, and thus might realize stable survival and long-term airway function maintenance. The current study provides feasible strategies and ideal tracheal substitutes for permanent functional reconstruction of long-segmental trachea defects.</abstract><cop>England</cop><pub>Elsevier Ltd</pub><pmid>30867137</pmid><doi>10.1016/j.actbio.2019.03.003</doi><tpages>11</tpages><orcidid>https://orcid.org/0000-0002-0818-660X</orcidid><orcidid>https://orcid.org/0000-0003-2488-2733</orcidid></addata></record>
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subjects Animals
Autografts
Bionics
Cartilage
Cartilage - metabolism
Cartilage - pathology
Cartilage - transplantation
Cartilage regeneration
Chondrocytes
Chondrocytes - metabolism
Chondrocytes - pathology
Construction
Defects
Epithelium
Epithelization
Fascia
Feasibility studies
Female
Goats
Inflammation
Knee
Male
Microsurgery
Mucosa
Muscles
Neovascularization, Physiologic
Reconstruction
Regeneration
Repair
Respiratory tract
Substitutes
Surgery
Survival
Tissue engineering
Trachea
Trachea - physiology
Tracheal reconstruction
Transplantation
Vascularization
title Regeneration of trachea graft with cartilage support, vascularization, and epithelization
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