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Puff pastry-like chitosan/konjac glucomannan matrix with thrombin-occupied microporous starch particles as a composite for hemostasis.
Carbohydrate Polymers ( IF 10.7 ) Pub Date : 2020-01-07 , DOI: 10.1016/j.carbpol.2019.115814
Zhenghui Shi 1 , Guangqian Lan 2 , Enling Hu 1 , Fei Lu 2 , Ping Qian 3 , Jiawei Liu 4 , Fangyin Dai 1 , Ruiqi Xie 2
Affiliation  

Hemorrhage control is key for reducing mortality following severe trauma. In this study, we produced a puff pastry-like chitosan/konjac glucomannan matrix loaded with thrombin-occupied microporous starch particles to initiate hemostasis. The composite showed a hierarchical porous structure system consisting of porous and rough structures with evenly distributed microporous starch particles. Thrombin was evenly and independently distributed on the microporous starch particles within the hierarchical system and served to accelerate hemostasis. Meanwhile, the composite displayed excellent water absorption capacity, high zeta potential, roughness, and porosity. The composite was found to elicit desirable pro-thrombin time (PT), activated partial thrombin time (APTT), and whole blood clotting indices (BCI). Experiments using animal models demonstrated that the composite could effectively control wound hemorrhage. Furthermore, the composite showed good biocompatibility and effective degradability. Together, our results show that the puff pastry-like hemostat with hierarchical porous structure offers significant potential for use in hemostasis control.

中文翻译:

类似于酥皮的壳聚糖/康佳克葡甘露聚糖基质,具有凝血酶占据的微孔淀粉颗粒,可作为止血复合材料。

出血控制是降低严重创伤后死亡率的关键。在这项研究中,我们生产了一种类似糕点的壳聚糖/ konjac葡甘露聚糖基质,其中负载了凝血酶占据的微孔淀粉颗粒,从而开始止血。该复合材料显示出分级的多孔结构体系,其由具有均匀分布的微孔淀粉颗粒的多孔和粗糙结构组成。凝血酶均匀且独立地分布在分级系统内的微孔淀粉颗粒上,可促进止血。同时,该复合材料显示出优异的吸水能力,高ζ电位,粗糙度和孔隙率。发现该复合物引发了理想的凝血酶原时间(PT),活化的凝血酶部分时间(APTT)和全血凝固指数(BCI)。使用动物模型进行的实验表明,该复合材料可以有效控制伤口出血。此外,该复合材料显示出良好的生物相容性和有效的降解性。在一起,我们的结果表明,具有分层多孔结构的酥油状止血剂为止血控制提供了巨大的潜力。
更新日期:2020-01-07
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