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Repair of orbital bone defects in canines using grafts of enriched autologous bone marrow stromal cells
BACKGROUD: Bone tissue engineering is a new approach for the repair of orbital defects. The aim of the present study was to explore the feasibility of tissue-engineered bone constructed using bone marrow stromal cells (BMSCs) that were rapidly isolated and concentrated from bone marrow (BM) by the r...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
BioMed Central
2014
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4036112/ https://www.ncbi.nlm.nih.gov/pubmed/24886296 http://dx.doi.org/10.1186/1479-5876-12-123 |
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author | Wang, Yefei Bi, Xiaoping Zhou, Huifang Deng, Yuan Sun, Jing Xiao, Caiwen Gu, Ping Fan, Xianqun |
author_facet | Wang, Yefei Bi, Xiaoping Zhou, Huifang Deng, Yuan Sun, Jing Xiao, Caiwen Gu, Ping Fan, Xianqun |
author_sort | Wang, Yefei |
collection | PubMed |
description | BACKGROUD: Bone tissue engineering is a new approach for the repair of orbital defects. The aim of the present study was to explore the feasibility of tissue-engineered bone constructed using bone marrow stromal cells (BMSCs) that were rapidly isolated and concentrated from bone marrow (BM) by the red cell lysis method, then combined with β-tricalcium phosphate (β-TCP) to create grafts used to restore orbital bone defects in canines. METHODS: In the experimental group, grafts were constructed using BMSCs obtained by red cell lysis from 20 ml bone marrow, combined with β-TCP and BM via the custom-made stem cell-scaffold device, then used to repair 10 mm diameter medial orbital wall bony defects in canines. Results were compared with those in groups grafted with BM/β-TCP or β-TCP alone, or with defects left untreated as controls. The enrichment of BMSCs and nucleated cells (NCs) in the graft was calculated from the number in untreated bone marrow and in suspensions after red cell lysis. Spiral computed tomography (CT) scans were performed 1, 4, 12 and 24 weeks after implantation in all groups. Gross examination, micro-CT and histological measurements were performed 24 weeks after surgery. The results were analyzed to evaluate the efficacy of bone repair. RESULTS: The number of NCs and of colony-forming units within the scaffolds were increased 54.8 times and 53.4 times, respectively, compared with untreated bone marrow. In the BMSC-BM/β-TCP group, CT examination revealed that the scaffolds were gradually absorbed and the bony defects were restored. Micro-CT and histological examination confirmed that the implantations led to good repair of the defects, with 6 out 8 orbital defects completely restored in the experimental group, while by contrast, the grafts in the control groups did not fully repair the bony defects, a difference which was statistically significant (p < 0.05). CONCLUSIONS: Tissue-engineered bone, constructed using BMSCs isolated by red cell lysis of BM, can restore critical-sized orbital wall defects in canines. |
format | Online Article Text |
id | pubmed-4036112 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2014 |
publisher | BioMed Central |
record_format | MEDLINE/PubMed |
spelling | pubmed-40361122014-05-29 Repair of orbital bone defects in canines using grafts of enriched autologous bone marrow stromal cells Wang, Yefei Bi, Xiaoping Zhou, Huifang Deng, Yuan Sun, Jing Xiao, Caiwen Gu, Ping Fan, Xianqun J Transl Med Research BACKGROUD: Bone tissue engineering is a new approach for the repair of orbital defects. The aim of the present study was to explore the feasibility of tissue-engineered bone constructed using bone marrow stromal cells (BMSCs) that were rapidly isolated and concentrated from bone marrow (BM) by the red cell lysis method, then combined with β-tricalcium phosphate (β-TCP) to create grafts used to restore orbital bone defects in canines. METHODS: In the experimental group, grafts were constructed using BMSCs obtained by red cell lysis from 20 ml bone marrow, combined with β-TCP and BM via the custom-made stem cell-scaffold device, then used to repair 10 mm diameter medial orbital wall bony defects in canines. Results were compared with those in groups grafted with BM/β-TCP or β-TCP alone, or with defects left untreated as controls. The enrichment of BMSCs and nucleated cells (NCs) in the graft was calculated from the number in untreated bone marrow and in suspensions after red cell lysis. Spiral computed tomography (CT) scans were performed 1, 4, 12 and 24 weeks after implantation in all groups. Gross examination, micro-CT and histological measurements were performed 24 weeks after surgery. The results were analyzed to evaluate the efficacy of bone repair. RESULTS: The number of NCs and of colony-forming units within the scaffolds were increased 54.8 times and 53.4 times, respectively, compared with untreated bone marrow. In the BMSC-BM/β-TCP group, CT examination revealed that the scaffolds were gradually absorbed and the bony defects were restored. Micro-CT and histological examination confirmed that the implantations led to good repair of the defects, with 6 out 8 orbital defects completely restored in the experimental group, while by contrast, the grafts in the control groups did not fully repair the bony defects, a difference which was statistically significant (p < 0.05). CONCLUSIONS: Tissue-engineered bone, constructed using BMSCs isolated by red cell lysis of BM, can restore critical-sized orbital wall defects in canines. BioMed Central 2014-05-11 /pmc/articles/PMC4036112/ /pubmed/24886296 http://dx.doi.org/10.1186/1479-5876-12-123 Text en Copyright © 2014 Wang et al.; licensee BioMed Central Ltd. http://creativecommons.org/licenses/by/4.0 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated. |
spellingShingle | Research Wang, Yefei Bi, Xiaoping Zhou, Huifang Deng, Yuan Sun, Jing Xiao, Caiwen Gu, Ping Fan, Xianqun Repair of orbital bone defects in canines using grafts of enriched autologous bone marrow stromal cells |
title | Repair of orbital bone defects in canines using grafts of enriched autologous bone marrow stromal cells |
title_full | Repair of orbital bone defects in canines using grafts of enriched autologous bone marrow stromal cells |
title_fullStr | Repair of orbital bone defects in canines using grafts of enriched autologous bone marrow stromal cells |
title_full_unstemmed | Repair of orbital bone defects in canines using grafts of enriched autologous bone marrow stromal cells |
title_short | Repair of orbital bone defects in canines using grafts of enriched autologous bone marrow stromal cells |
title_sort | repair of orbital bone defects in canines using grafts of enriched autologous bone marrow stromal cells |
topic | Research |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4036112/ https://www.ncbi.nlm.nih.gov/pubmed/24886296 http://dx.doi.org/10.1186/1479-5876-12-123 |
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