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Experimental studies on tissue-engineered peripheral nerve using culturing of Schwann cell

Research Project

Project/Area Number 12671439
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Orthopaedic surgery
Research InstitutionKeio University

Principal Investigator

NAKAO Yasushi  Keio Univ. Orthopaedics Instructor, 医学部, 助手 (30188883)

Co-Investigator(Kenkyū-buntansha) IKEGAMI Hiroyasu  Keio Univ Orthopaedics Instructor, 医学部, 助手 (00193186)
Project Period (FY) 2000 – 2001
Project Status Completed (Fiscal Year 2001)
Budget Amount *help
¥2,200,000 (Direct Cost: ¥2,200,000)
Fiscal Year 2001: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 2000: ¥1,400,000 (Direct Cost: ¥1,400,000)
KeywordsSchwann cell / artificial nerve / nerve graft / Schawann細胞 / HNK-1糖鎖抗原
Research Abstract

Tissue engineering offers the potential to create replacement structures from autologous cells and biodegradable polymer conduits. Since they contain living cells, these structures have the potential to grow and induce regeneration. The objectives of this study are to create Schwann cells-seeded biodegradable nerve guide, and to assess in vivo nerve regeneration through the guides.
A novel, biodegradable polymer conduit (2 mm in diameter, 0.5 mm in thickness, 25 mm in length) was composed of a polycaprolactone-polylactic acid copolymer reinforced with woven polyglycolic acid. First, Schwann cells were isolated from Wistar rat sciatic nerve and expanded in vitro by eight weeks. Second, these cells were seeded into the polymer conduit via a low-pressure injection and centrifuge technique. Two weeks after seeding, Schwann cells culturing in a porous conduit wall were observed using electron microscope. Third, the Schwann cells-seeded conduits were used to bridge 20-mm defects in the Wistar … More rat sciatic nerve. Polymer conduits lacking Schwann cells and silicone conduits were implanted into another set of animals as controls. After 8 weeks, sciatic nerve including conduit was harvested and fixed by glutaraldehyde. At the mid portion of the conduit, cross sections were cut and stained with Toluidine blue to evaluate axonal contents.
Electron microscopic study prior to grafting showed numerous number of Schwann cell culturing in a porous conduit wall with 3-dimensional manner. Histological assessment with light microscope at 8 weeks demonstrated excellent regeneration with well-myelinated fibers in the bridging tissue through the Schwann cells-seeded polymer conduits. In the untreated polymer conduits, four animals showed bridging tissue but nerve regeneration was poor. There was no regeneration through the silicone conduits. These findings suggest that tissue-engineered devices, composed of biodegradable polymer materials and adherent living Schwann cells can facilitate nerve regeneration in reconstruction for a long nerve gap. Less

Report

(3 results)
  • 2001 Annual Research Report   Final Research Report Summary
  • 2000 Annual Research Report
  • Research Products

    (17 results)

All Other

All Publications (17 results)

  • [Publications] 仲尾保志: "末梢神経の最前線から"臨床整形外科. 35・13. 1479-1487 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] 斉藤治和: "運動および知覚Schwann細胞における特異的発現と存在に関する研究"日本手の外科学会雑誌. 17・4. 399-402 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] 奥山 訓子: "Cable graftの総断面積が軸索再生に及ぼす影響"日本手の外科学会雑誌. 18・2. 192-195 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] 斉藤治和: "新しいphenotypeのSchwann細胞の存在とその特性"日本手の外科学会雑誌. 19・4. 406-409 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] 仲尾保志: "末梢神経再生のためのtissue engineeringの応用"脳の科学. (印刷中). (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] 仲尾 保志: "再生医療工学の最先端"シーエムシー出版. 76-79 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Yasushi Nakao: "Current status and future for peripheral nerve transplantation"Rinshou-Seikeigeka. 35. 1479-1487 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Harukazu Saito, et al.: "Specific regulation and localization of carbohydrate epitope on motor and sensory Schwann cells"J Jpn.Soc.Surg.Hand. 17. 399-402 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Noriko Okuyama, et al.: "The effect of total area of fascicle in cable grafting on axonal regeneration"J Jpn.Soc.Surg.Hand. 18. 192-195 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Harukazu Saito, et al.: "A new phenotype of Schwann cell : NCAM-positive cell in sensory fascicle"J Jpn.Soc.Surg.Hand. 19. 406-409 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Yasushi Nakao, et al.: "Peripheral nerve reconstruction using tissue engineered nerve guide"Brain Science. 25. 228-233 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Yasushi Nakao: "Peripheral nerve. Cutting-edge engineerings for regenerative medicine"CMC Books. 76-79 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] 奥山訓子: "Cable graftにおける移植神経片数と再生軸索数の関係"日本手の外科学会雑誌. 17・4. 376-380 (2000)

    • Related Report
      2001 Annual Research Report
  • [Publications] 奥山訓子: "Cable graftにおける神経の再生形態と誘導数の関係"日本手の外科学会雑誌. 18・2. 192-195 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] 斉藤治和: "新しいphenotypeのSchwann細胞の存在とその特性"日本手の外科学会雑誌. (印刷中). (2002)

    • Related Report
      2001 Annual Research Report
  • [Publications] 仲尾保志: "末梢神経移植の最前線から"臨床整形外科. 35・13. 1479-1487 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] 斉藤治和: "運動および知覚Schwann細胞における特異的発現と局在に関する研究"日本手の外科学会雑誌. 17・4. 399-402 (2000)

    • Related Report
      2000 Annual Research Report

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Published: 2000-04-01   Modified: 2016-04-21  

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