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Intervening oxidative stress integrated with an excellent biocompatibility of hemodialysis membrane fabricated by nucleobase-recognized co-immobilization strategy of tannic acid, looped PEtOx brush and heparin
Journal of Membrane Science ( IF 9.5 ) Pub Date : 2021-02-15 , DOI: 10.1016/j.memsci.2021.119174
Qi Chen , Yang He , Yiping Zhao , Li Chen

Functionalized hemodialysis membranes have been employed to suppress oxidative stress for hemodialysis therapy. However, the inhibition effects of the hemodialysis on the harmful metabolites of oxidative stress, including lipid peroxides and advanced glycation end products (AGEs), have not been fully explored yet. Herein, we report on utilizing the tannic acid (TA) coating as a reactive oxygen species (ROS) scavenger onto the hemodialysis membrane surface to solve this problem. Combining high biocompatibility of looped poly(2-ethyl-2-oxazoline) (PEtOx) brushes and anticoagulant property of heparin (Hep), the TA/PEtOx/Hep functionalized poly (ether sulfone) (PES) hemodialysis membrane has constructed by the nucleobase-recognized strategy. The functionalized membrane directly increased the serum total antioxidant capacity, and suppressed lipid peroxidation and protein glycosylation. The TA/PEtOx/Hep functionalized hemodialysis membrane effectively protected cardiomyocytes (H9C2) and vascular endothelial cells (HUVEC) from oxidative damage. The introduction of looped PEtOx brushes indicated in considerable improvement of blood compatibility and reduction of complement activation, and the immobilization of Hep prolonged the activated partial thromboplastin time. The typical toxins were removed in the simulation dialysis experiment, confirming the TA/PEtOx/Hep functionality feasibility. The present work provides a promising candidate for developing and applying the hemodialysis membrane, which might alleviate patients' complications to improve prognostic efficacy.



中文翻译:

单宁酸,环式PEtOx刷和肝素通过核碱基识别的共固定化策略制备的介入氧化应激与优异的血液透析膜生物相容性相结合

功能化的血液透析膜已被用于抑制氧化应激,用于血液透析治疗。但是,血液透析对氧化应激的有害代谢产物(包括脂质过氧化物和高级糖基化终产物(AGEs))的抑制作用尚未得到充分研究。在本文中,我们报道了利用单宁酸(TA)涂层作为血液透析膜表面的活性氧(ROS)清除剂来解决此问题的方法。TA / PEtOx / Hep官能化聚醚砜(PES)血液透析膜结合了环状聚(2-乙基-2-恶唑啉)(PEtOx)刷的高生物相容性和肝素(Hep)的抗凝血特性,并通过核碱基构建-公认的策略。功能化膜直接增加了血清总抗氧化能力,并抑制脂质过氧化和蛋白质糖基化。TA / PEtOx / Hep功能化血液透析膜可有效保护心肌细胞(H9C2)和血管内皮细胞(HUVEC)免受氧化损伤。引入环状PEtOx刷可显着改善血液相容性并减少补体激活,而Hep的固定化可延长激活的部分凝血活酶时间。在模拟透析实验中去除了典型的毒素​​,证实了TA / PEtOx / Hep功能的可行性。目前的工作为开发和应用血液透析膜提供了有希望的候选人,这可能减轻患者的并发症,改善预后。TA / PEtOx / Hep功能化血液透析膜可有效保护心肌细胞(H9C2)和血管内皮细胞(HUVEC)免受氧化损伤。引入环状PEtOx刷可显着改善血液相容性并减少补体激活,而Hep的固定化可延长激活的部分凝血活酶时间。在模拟透析实验中去除了典型的毒素​​,证实了TA / PEtOx / Hep功能的可行性。目前的工作为开发和应用血液透析膜提供了有希望的候选人,这可能减轻患者的并发症,改善预后。TA / PEtOx / Hep功能化血液透析膜可有效保护心肌细胞(H9C2)和血管内皮细胞(HUVEC)免受氧化损伤。引入环状PEtOx刷可显着改善血液相容性并减少补体激活,而Hep的固定化可延长激活的部分凝血活酶时间。在模拟透析实验中去除了典型的毒素​​,证实了TA / PEtOx / Hep功能的可行性。目前的工作为开发和应用血液透析膜提供了有希望的候选人,这可能减轻患者的并发症,改善预后。引入环状PEtOx刷可显着改善血液相容性并减少补体激活,而Hep的固定可延长激活的部分凝血活酶时间。在模拟透析实验中去除了典型的毒素​​,证实了TA / PEtOx / Hep功能的可行性。目前的工作为开发和应用血液透析膜提供了有希望的候选人,这可能减轻患者的并发症,改善预后。引入环状PEtOx刷可显着改善血液相容性并减少补体激活,而Hep的固定可延长激活的部分凝血活酶时间。在模拟透析实验中去除了典型的毒素​​,证实了TA / PEtOx / Hep功能的可行性。目前的工作为开发和应用血液透析膜提供了有希望的候选人,这可能减轻患者的并发症,改善预后。

更新日期:2021-02-18
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