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Please use this identifier to cite or link to this item: http://hdl.handle.net/10564/3104

Title: Utility of tricalcium phosphate and osteogenic matrix cell sheet constructs for bone defect reconstruction.
Other Titles: 骨欠損再建における培養細胞シートを併用した培養人工骨移植の有用性
Authors: Ueha, Tomoyuki
Akahane, Manabu
Shimizu, Takamasa
Uchihara, Yoshinobu
Morita, Yusuke
Nitta, Naoya
Kido, Akira
Inagaki, Yusuke
Kawate, Kenji
Tanaka, Yasuhito
Keywords: Bone marrow stromal cells
Bone regeneration
Tissue engineering
Calcium phosphate
Issue Date: Jun-2015
Publisher: Baishideng Pub. Inc.
Citation: World journal of stem cells Vol.7 No.5 p.873-882(2015.06)
Abstract: AIM: To determine the effects of transplanting osteogenic matrix cell sheets and beta-tricalcium phosphate (TCP) constructs on bone formation in bone defects. METHODS: Osteogenic matrix cell sheets were prepared from bone marrow stromal cells (BMSCs), and a porous TCP ceramic was used as a scaffold. Three experimental groups were prepared, comprised of TCP scaffolds (1) seeded with BMSCs; (2) wrapped with osteogenic matrix cell sheets; or (3) both. Constructs were implanted into a femoral defect model in rats and bone growth was evaluated by radiography, histology, biochemistry, and mechanical testing after 8 wk. RESULTS: In bone defects, constructs implanted with cell sheets showed callus formation with segmental or continuous bone formation at 8 wk, in contrast to TCP seeded with BMSCs, which resulted in bone non-union. Wrapping TCP constructs with osteogenic matrix cell sheets increased their osteogenic potential and resulting bone formation, compared with conventional bone tissue engineering TCP scaffolds seeded with BMSCs. The compressive stiffness (mean ± SD) values were 225.0 ± 95.7, 30.0 ± 11.5, and 26.3 ± 10.6 MPa for BMSC/TCP/Sheet constructs with continuous bone formation, BMSC/TCP/Sheet constructs with segmental bone formation, and BMSC/TCP constructs, respectively. The compressive stiffness of BMSC/TCP/Sheet constructs with continuous bone formation was significantly higher than those with segmental bone formation and BMSC/TCP constructs. CONCLUSION: This technique is an improvement over current methods, such as TCP substitution, and is useful for hard tissue reconstruction and inducing earlier bone union in defects.
Description: 博士(医学)・乙第1366号・平成27年11月27日
Copyright ©The Author(s) 2015. Published by Baishideng Publishing Group Inc. All rights reserved. This article is an open-access article which was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license,which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: http://creativecommons.org/ licenses/by-nc/4.0/
URI: http://hdl.handle.net/10564/3104
ISSN: 19480210
Academic Degrees and number: 24601B1366
Degree-granting date: 2015-11-27
Degree name: 博士(医学)
Degree-granting institutions: 奈良県立医科大学
Appears in Collections:2015年度

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