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Human tissue allograft processing: impact on in vitro and in vivo biocompatibility

机译:人体组织同种异体移植处理:对体外和体内生物相容性的影响

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摘要

This work investigates the impact of chemical and physical treatments on biocompatibility for human bone/tendon tissues. Nontreated and treated tissues were compared. In vitro testing assessed indirect and direct cytotoxicity. Tissues were subcutaneously implanted in rats to assess the immunological, recolonization, and revascu-larization processes at 2-4 weeks postimplantation. No significant cytotoxicity was found for freeze-dried treated bones and tendons in comparison to control. The cellular adhesion was significantly reduced for cells seeded on these treated tissues after 24 h of direct contact. A significant cytotoxicity was found for frozen treated bones in comparison to freeze-dried treated bones. Tissue remodeling with graft stability, no harmful inflammation, and neo-vascularization was observed for freeze-dried chemically treated bones and tendons. Frozen-treated bones were characterized by a lack of matrix recolonization at 4 weeks postimplantation. In conclusion, chemical processing with freeze-drying of human tissues maintains in vitro biocompatibility and in vivo tissue remodeling for clinical application.
机译:这项工作调查了化学和物理处理对人类骨骼/肌腱组织生物相容性的影响。比较未处理和已处理的组织。体外测试评估了间接和直接的细胞毒性。将组织皮下植入大鼠中,以评估植入后2-4周的免疫学,再定植和血管再生过程。与对照相比,冻干处理的骨骼和肌腱未发现明显的细胞毒性。直接接触24小时后,接种在这些处理过的组织上的细胞的细胞粘附力显着降低。与冷冻干燥处理的骨头相比,发现冷冻处理的骨头具有显着的细胞毒性。冻干化学处理的骨骼和肌腱具有移植物稳定性,无有害炎症和新血管形成的组织重塑。冷冻处理的骨头的特点是在植入后4周没有基质再定植。总之,冷冻干燥人体组织的化学过程可保持体外生物相容性和体内组织重塑,以用于临床应用。

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  • 来源
    《Journal of materials science》 |2009年第8期|1709-1720|共12页
  • 作者单位

    University Tissue Bank, University Clinical Hospital Saint-Luc, Universite catholique de Louvain, Avenue Mounier, Tour Rosalind Franklin, 1200 Brussels, Belgium;

    University Tissue Bank, University Clinical Hospital Saint-Luc, Universite catholique de Louvain, Avenue Mounier, Tour Rosalind Franklin, 1200 Brussels, Belgium;

    University Tissue Bank, University Clinical Hospital Saint-Luc, Universite catholique de Louvain, Avenue Mounier, Tour Rosalind Franklin, 1200 Brussels, Belgium;

    University Tissue Bank, University Clinical Hospital Saint-Luc, Universite catholique de Louvain, Avenue Mounier, Tour Rosalind Franklin, 1200 Brussels, Belgium;

    Laboratory of Experimental Surgery. Faculte de Medecine, Universite catholique de Louvain, Avenue Hippocrate 55-Bte5570, 1200 Brussels, Belgium;

    University Tissue Bank, University Clinical Hospital Saint-Luc, Universite catholique de Louvain, Avenue Mounier, Tour Rosalind Franklin, 1200 Brussels, Belgium;

    University Tissue Bank, University Clinical Hospital Saint-Luc, Universite catholique de Louvain, Avenue Mounier, Tour Rosalind Franklin, 1200 Brussels, Belgium Laboratory of Experimental Surgery. Faculte de Medecine, Universite catholique de Louvain, Avenue Hippocrate 55-Bte5570, 1200 Brussels, Belgium;

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