止血
纳米纤维素
化学
海绵
凝结
纤维素
复合数
凝血时间
凝血
生物医学工程
化学工程
生物物理学
材料科学
生物化学
外科
复合材料
医学
生物
内科学
植物
工程类
作者
Xiangfei Yin,Yinchun Hu,Min Kang,Junjie Hu,Baogang Wu,Y.-W. Liu,Xuanyu Liu,Min Bai,Yan Wei,Di Huang
标识
DOI:10.1016/j.ijbiomac.2023.127295
摘要
Excessive bleeding is the leading cause of death in accidents and operations. Ca2+ crosslinked carboxyl nanocellulose (CN)/montmorillonite (MMT) composite (CaCNMMT) sponges were prepared by uniform mixing and directional freeze-drying methods which was inspired by the coordination mechanism of blood clot formation and coagulation cascade activation in natural hemostasis process. Carboxyl nanocellulose (CaCN) sponge has instantaneous water absorption capacity, and CaCNMMT sponges could further activate clotting factors. Therefore, CaCNMMT sponges achieved quick hemostasis by efficient concentrating blood, inducing hemocyte aggregation and stimulating coagulation cascade activation based on the synergistic effects of CN and MMT. Blood clotting index of CaCNMMT (15.90 ± 0.52 %) was significantly lower than CaCN (59.3 ± 1.43 %), and APTT time (22 ± 2 s) was almost equivalent to MMT (20 ± 2 s). CaCNMMT sponge showed good quick hemostatic effect on massive hemorrhage in both tail-breaking and liver injury model which provided a new strategy for the application of MMT in hemostatic and trauma treatment fields.
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