| Project/Area Number |
16591477
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
Orthopaedic surgery
|
|---|
| Research Institution | Tokyo Medical and Dental University |
|---|
Principal Investigator |
MUNETA Takeshi Tokyo Med & Dent Univ, Orthop Sung, Professor, 大学院・医歯学総合研究科, 教授 (50190864)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
SEKIYA Ichiro Tokyo Med & Dent Univ, Orthop Surg, Assistant Prof, 大学院・医歯学総合研究科, 助手 (10345291)
TAKAKUDA Kazuo Tokyo Med & Dent Univ, Institute of Biomat & Bioengineering, 生体材料工学研究所, 教授 (70108223)
|
|---|
| Project Period (FY) |
2004 – 2005
|
| Project Status |
Completed (Fiscal Year 2005)
|
| Budget Amount *help |
¥3,000,000 (Direct Cost: ¥3,000,000)
Fiscal Year 2005: ¥1,600,000 (Direct Cost: ¥1,600,000)
Fiscal Year 2004: ¥1,400,000 (Direct Cost: ¥1,400,000)
|
|---|
| Keywords | Mesenchymal stem cells / healing enhancement / tendon transfer / ACL injury / ACL reconstruction / histological analysis / cell therapy / 生体力学的検討 / 滑膜幹細胞 / 治癒促進 / 細胞移植術 |
|---|
| Research Abstract |
Purpose : To investigate the effect and mechanism of the implantation of the synovium-derived mesenchymal stem cells (MSCs) on tendon-bone healing in rats. Type of Study : Experimental study. Methods : Achilles' tendon grafts of 19 Sprague-Dawley rats were inserted into a bone tunnel from the tibial plateau to the tibial tuberosity with a pull-out fixation. The bone tunnel was filled with MSCs labeled with Dil or without MSCs as the control. Histological analyses (n=3) by microscopy and fluorescent microscopy were-performed. Results : Histological analyses showed MSCs improved tendon-bone healing by increasing the production of collagen fibers at 1 week and forming more perpendicular collagen fibers connecting the bone to tendon resembling Sharpey's fibers at 2 weeks. Implanted MSCs were observed in the tendon-bone interface at 1 and 2 weeks. Labeled cells were decreased and the effect of implanted cells disappeared at 4 weeks. Conclusions : Implanting synoviam-derived MSCs on tendon-bone interface resulted in an increased bone-tendon healing in the early phase by producing more collagen fibers. Clinical relevance : Enhancement of bone-tendon healing could provide accelerated rehabilitation after anterior cruciate ligament (ACL) reconstruction using hamstring tendon.
|
