Curr Stem Cell Res Ther:海藻酸钠/生物活性玻璃复合糊剂可促进间充质干细胞的增殖和分化

2018-07-05 MedSci MedSci原创

具有不同组成的生物活性玻璃已广泛用于骨组织工程。本研究旨在制备、开发并表征可用于骨修复的含有生物玻璃的藻酸盐糊剂。 研究使用溶胶-凝胶制备的生物活性玻璃纳米颗粒,以及不同比例的CaO/P2O5(19,9.5和4.75),和不同浓度的海藻酸钠溶液(1,2和4wt%)制备了可注射骨浆。研究了CaO/P2O5和水粉比(P/L)以及藻酸盐浓度对糊剂的可注射性、生物降解性、流变性、生物活性和细胞行为的影响。

具有不同组成的生物活性玻璃已广泛用于骨组织工程。本研究旨在制备、开发并表征可用于骨修复的含有生物玻璃的藻酸盐糊剂。

研究使用溶胶-凝胶制备的生物活性玻璃纳米颗粒,以及不同比例的CaO/P2O5(19,9.5和4.75),和不同浓度的海藻酸钠溶液(1,2和4wt%)制备了可注射骨浆。研究了CaO/P2O5和水粉比(P/L)以及藻酸盐浓度对糊剂的可注射性、生物降解性、流变性、生物活性和细胞行为的影响。通过MTT测定、生物矿化测定、ALP活性、吖啶橙染色和茜素红染色测试评估糊剂对人间充质干细胞(hMSCs)的作用。

结果显示,添加海藻酸钠后糊剂表现出可变性。浆料的储能模量均大于0.1-100s-1频率范围内的损耗模量。细胞毒性评价结果表明,糊状物中有一定量的生物活性玻璃超过极限;hMSCs的可行性将面临风险。CaO/P2O5 = 9.5,海藻酸钠1%,P/L比为0.8,在矿物载量、注入特性,SBF中的细胞生物活性,损失重量和洗出行为,hMSCs的增殖和分化方面表现出最佳性能。

综上所述,该研究结果表明,用藻酸钠溶液和生物活性玻璃纳米颗粒制备的糊剂可用于骨组织工程。

原始出处:


Ahmadi SM, Behnamghader A, Asefnejaad A. Evaluation of hMSCs response to sodium alginate/bioactive glass composite paste: effect of CaO/P2O5, sodium alginate concentration and P/L ratios. Curr Stem Cell Res Ther. 2018 Jul 3. doi: 10.2174/1574888X13666180703141956.

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    2018-12-18 维他命
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    2018-07-05 131****2916

    不错的文章值得推荐一下

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