ACS Appl Mater Interfaces:Ga-MBG/CHT或可作为新的止血剂应用

2017-11-26 MedSci MedSci原创

基于壳聚糖的止血剂是即刻止血的一种有希望的候选者。然而,这种止血剂具有一些缺点,需要进一步改进以达到所需的止血效果。在此基础上,研究人员通过冻干法制备了一系列含1%Ga2O3的介孔生物活性玻璃-壳聚糖复合支架(Ga-MBG/CHT),研究了不同浓度的Ga-MBG(10,30和50wt%)对CHT支架的止血功能,并与当前市售的壳聚糖涂覆的止血纱布Celox Rapid纱布(CXR)相比较。结果显示,

基于壳聚糖的止血剂是即刻止血的一种有希望的候选者。然而,这种止血剂具有一些缺点,需要进一步改进以达到所需的止血效果。

在此基础上,研究人员通过冻干法制备了一系列含1%Ga2O3的介孔生物活性玻璃-壳聚糖复合支架(Ga-MBG/CHT),研究了不同浓度的Ga-MBG(10,30和50wt%)对CHT支架的止血功能,并与当前市售的壳聚糖涂覆的止血纱布Celox Rapid纱布(CXR)相比较。

结果显示,与CXR相比,本研究所制备的支架为> 79%的孔隙率,且吸水性增加。凝血研究的结果显示,与CXR相比,纯CHT和复合支架的止血性能更优。此外,与纯CHT支架相比,Ga-MBG含量最高(50 wt%)的复合支架在血栓形成、凝血和血小板粘附及聚集方面的能力更强。

时间测定法和Alamar Blue测定法评估了复合支架的抗菌功效和生物相容性。结果显示,50%Ga-MBG/CHT的抗菌效果较CHT和CXR更优。细胞活力结果也表明,Ga-MBG/CHT复合支架具有良好的生物相容性,即使在50wt%Ga-MBG负载下也能促进人真皮成纤维细胞的扩散和增殖。

综上所述,这些结果表明,Ga-MBG/CHT支架或可更好的止血,可用于危急情况下的止血。

原始出处:


Pourshahrestani S, Zeimaran E, Kadri NA, Gargiulo N, et al., Potency and Cytotoxicity of a Novel Gallium-Containing Mesoporous Bioactive Glass/Chitosan Composite Scaffold as Hemostatic Agents. ACS Appl Mater Interfaces. 2017 Sep 20;9(37):31381-31392. doi: 10.1021/acsami.7b07769.

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    2018-01-25 shanyongle
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    2017-11-28 jeanqiuqiu
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    2017-11-28 yaanren