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Newly developed biocompatible membrane and effects of its smoother surface on antithrombogenicity

机译:新开发的生物相容性膜及其光滑表面对抗血栓形成的影响

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The new biocompatible cellulosic membrane (AM-BC-F[AM-BIO-HX], Asahi-Medical Co. Ltd., Tokyo, Japan) has been developed, which has a higher flux than conventional membranes and more excellent antithrombogenicity because of its smoother membrane surface. The roughness of the inner surface of the AM-BC-F membrane was smaller than that of conventional membranes, as observed by Atomic Force Microscopy, because it was produced by the newly developed spinning method of cuprammonium cellulose solution, which has a different composition from that of a conventional cuprammonium cellulose solution. The degree of platelet adhesion (number of platelets adhered) on the membrane surface was evaluated in vitro by the measurement of the amount of the LDH released from the adhered platelets on the membrane surface after contact with fresh blood of Japanese male white rabbits weighing 2.5-3.0 kg. The number of platelets adhered of AM-BC-F was far smaller than that of conventional membranes. It was deduced from the smoother surface of the membrane. It can be expected that AM-BC-F will have an excellent antithrombogenicity on a dynamic state during actual dialysis treatments, because it is considered that the shearing stress of blood on the inner surface and the interaction between platelets and the membrane surface are less than that of conventional membranes.
机译:新型生物相容性纤维素膜(朝日医疗株式会社,AM-BC-F [AM-BIO-HX],日本东京)已经开发出来,由于其具有比传统膜更高的通量和更优异的抗凝血作用膜表面更光滑。通过原子力显微镜观察,AM-BC-F膜的内表面粗糙度小于常规膜,因为它是通过新开发的铜铵纤维素溶液纺丝方法生产的,其成分与常规铜铵纤维素溶液的溶解度。通过测量与重2.5-2.5的日本雄性白兔的新鲜血液接触后从粘附在膜表面上的血小板释放的LDH的量,在体外评估膜表面上的血小板粘附程度(粘附的血小板数)。 3.0公斤AM-BC-F粘附的血小板数量远远少于常规膜。它是从膜的光滑表面推导出来的。可以预期,在实际透析治疗过程中,AM-BC-F在动态状态下具有优异的抗血栓形成性,因为认为内表面血液的剪切应力以及血小板与膜表面之间的相互作用小于常规膜的

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