...
首页> 外文期刊>Journal of Bioactive and Compatible Polymers >An osteogenic grafting complex combining human periosteal sheets with a porous poly(L-lactic acid) membrane scaffold: Biocompatibility, biodegradability, and cell fate in vivo
【24h】

An osteogenic grafting complex combining human periosteal sheets with a porous poly(L-lactic acid) membrane scaffold: Biocompatibility, biodegradability, and cell fate in vivo

机译:将人骨膜片与多孔聚(L-乳酸)膜支架相结合的成骨移植复合物:体内生物相容性,生物降解性和细胞命运

获取原文
获取原文并翻译 | 示例
           

摘要

In this in vitro study, novel porous poly(i_-lactic acid) membranes were developed to improve periosteal sheets by promoting initial adhesion of periosteal tissue segments and stimulating the formation of a viable multilayered cellular sheet. The biocompatibility, biodegradability, and osteogenicity were evaluated using human periosteal tissue segments cultured on porous poly (L-lactic acid) membranes; the periosteal sheets were osteogen induced and were then implanted in the dorsal subcutaneous tissue of nude mice. In vivo, the membrane degraded into clusters of membrane particles separated by wide cracks; fibroblastic cells invaded along with small blood vessels from the surrounding mouse connective tissue. In osteoinduced periosteal sheets, the membrane clusters were surrounded by numerous capillaries and a number of tartrate-resistant acid phosphatase-positive, multinucleated cells. Neither severe inflammation nor fibrous encapsulation was observed throughout the implantation (-I2 weeks). These porous poly(L-lactic acid) membranes were highly biocompatible and functioned well as biodegradable scaffolds that could enhance the use of osteogenic periosteal sheets in therapy.
机译:在这项体外研究中,开发了新型多孔聚(乳酸)膜,通过促进骨膜组织段的初始粘附并刺激可行的多层细胞片的形成来改善骨膜片。使用在多孔聚(L-乳酸)膜上培养的人骨膜组织片段评估了生物相容性,生物降解性和成骨性。将骨膜片诱导成骨,然后将其植入裸鼠的背部皮下组织。在体内,该膜降解为被宽裂缝分开的膜颗粒簇;纤维母细胞与周围小鼠结缔组织的小血管一起侵入。在骨诱导的骨膜片中,膜簇被许多毛细血管和许多抗酒石酸的酸性磷酸酶阳性的多核细胞所包围。在整个植入过程中(-I2周)均未观察到严重的炎症或纤维包囊。这些多孔聚(L-乳酸)膜具有高度的生物相容性,并且具有可生物降解的支架功能,可以增强成骨性骨膜片在治疗中的用途。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号