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Evaluation of a biopolymer matrix for cell based bone repair.

机译:对基于细胞的骨修复的生物聚合物基质的评估。

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摘要

Autogenous bone grafts are often associated with unpredictable success rates and donor site morbidity. There is clear medical need for cost-effective bone graft material that overcomes these short-comings.;Aim. To test a thermally stable, macro-porous collagen scaffold, DuraGenRTM for bone repair and study its ability to stimulate healing of critical size defects in rat calvaria engrafted with Mesenchymal Stem Cells(MSCs);Methods. Craniotomy defects, 8.9mm diameter were created in 28 adult Sprague-Dawley rats, randomly divided into four groups, 6-Empty(E), 6-Collagen only(C), 8-Collagen+MSCs(C+M), 8-Collagen+rhBMP-2(C+B). Two transgenic rats served as stromal cell donors by means of femoral marrow lavage.;Results. Bone repair at 28 days was measured using radiographs and histology. Histology showed mean bone fill of 9.25%(10.82), 19.07%(17.38), 44.21%(3.93) and 66.06%(15.08) respectively. Statistical analysis demonstrated significant differences between: E & C, C & C+M, C+B; none between C+M & C+B.;Conclusion. This study clearly displays osteogenic properties of collagen scaffold implanted with MSCs.
机译:自体骨移植通常与不可预测的成功率和供体部位发病率相关。克服这些缺点的具有成本效益的骨移植材料显然存在医学需求。为了测试热稳定的大孔胶原蛋白支架DuraGenRTM的骨修复,并研究其刺激植入间充质干细胞(MSCs)的大鼠颅骨中关键尺寸缺陷的愈合的能力;方法。在28只成年Sprague-Dawley大鼠中开创了8.9mm直径的颅骨切开术缺损,将其随机分为四组:6-Empty(E),仅6-collagen(C),8-Collagen + MSCs(C + M),8-胶原蛋白+ rhBMP-2(C + B)。两只转基因大鼠通过股骨髓灌洗作为基质细胞供体。使用X射线照片和组织学测量28天时的骨修复。组织学显示平均骨填充率分别为9.25%(10.82),19.07%(17.38),44.21%(3.93)和66.06%(15.08)。统计分析表明,E&C,C&C + M,C + B之间存在显着差异; C + M和C + B之间无。结论。这项研究清楚地显示了植入MSC的胶原蛋白支架的成骨特性。

著录项

  • 作者

    Jere, Deepali.;

  • 作者单位

    The University of North Carolina at Chapel Hill.;

  • 授予单位 The University of North Carolina at Chapel Hill.;
  • 学科 Engineering Biomedical.;Health Sciences Dentistry.
  • 学位 M.S.
  • 年度 2008
  • 页码 85 p.
  • 总页数 85
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 生物医学工程;口腔科学;
  • 关键词

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