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含胍基交联聚乙烯醇的合成及其对胆红素吸附性能研究 总被引:9,自引:2,他引:7
通过将胍基固载到交联聚乙烯醇水凝胶上制备了新型亲水性胆红素吸附剂,该类吸附剂对胆红素具有良好的吸附性能和较高的吸附效率.交联聚乙烯醇对胆红素的吸附率随着载体的交联度、离子浓度以及白蛋白与胆红素质量比的增加而降低;胍基固载量的提高可以增加吸附剂对胆红素的吸附性能. 相似文献
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吸附型“人工肝”辅助材料的制备及其性能研究:(Ⅲ)SVD醇解物 … 总被引:2,自引:0,他引:2
本文介绍了大孔交联聚乙烯醇共聚物的结构性能、功能基化反应,制备了一系列质子化胺基吸附剂,发现它们对水溶液及血清中的游离和结合胆红素具有较好的吸附性能,且血液相容性良好。 相似文献
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含氨基聚甲基丙烯酸羟乙酯树脂对胆红素的吸附性能研究 总被引:15,自引:3,他引:12
以交联聚甲基丙烯酸羟乙酯树脂为载体,以己二胺和多乙烯多胺为功能基制备了一系列胆红素吸附剂,研究了它们在不同吸附温度、离子强度和胆红素浓度等条件下,对胆红素的吸附性能的影响.研究表明,该类吸附剂对胆红素具有良好的吸附性能,其中以己二胺和质子化己二胺为功能基的吸附剂对胆红素的吸附作用最佳. 相似文献
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St-MMA-AA三元无皂共聚胶粒作蛋白质载体的研究 总被引:1,自引:0,他引:1
以交联聚乙烯醇凝胶为载体合成了含有对氨基苯磺酸功能基的吸附剂.它们对血清中甘油三脂具有良好的吸附效果,对血清中总蛋白的吸附性能较弱.对甘油三脂的吸附性能随吸附剂功能基含量的增加而增加,随载体交联度的提高而降低.血清中致病因子的浓度影响吸附性能. 相似文献
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新型交联甲壳糖吸附树脂对胆红素的吸附性能研究 总被引:15,自引:0,他引:15
以天然甲壳素为原料合成了珠状高分子吸附剂,研究了吸附剂在磷酸二氢钠和磷酸氢二钠缓冲溶液中对非结合型胆红素的吸附性能,实验结果表明:交联甲壳糖吸附树脂对非结合型胆红素很好的吸附效果。 相似文献
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新型低密度脂蛋白吸附剂的合成及吸附性能研究 总被引:3,自引:0,他引:3
通过在交联聚乙烯醇水凝胶上固载牛磺酸合成了新型低密度脂蛋白吸附剂,体外吸附结果表明,该类吸附剂对低密度脂蛋白的吸附选择性与吸附率不仅与交联聚乙烯醇载体本身的交联度和牛磺酸的固载量有关,而且还受到不同病人血清及吸附剂的颗粒直径等因素的影响.该类吸附剂对血清总蛋白的影响较小. 相似文献
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含氨基,羟基吸附剂对胆红素的吸附 总被引:16,自引:0,他引:16
本文分别合成了含氨基和羟基的高分子吸附剂,并对它们对胆红素的吸附性能进行了研究。实验表明,经3小时的吸附后,含氨基和含羟基的吸附剂对胆红素的吸附率可达80%以上,对其吸附胆红素的性能和机理进行了探讨。 相似文献
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为了获得性能较佳的胆红素吸附剂,本研究考察了功能基种类、链长、偶联密度等因素对吸附剂吸附性能的影响。结果表明,当功能基具有足够的链长,与胆红素相似的疏水性及较高的偶联密度时,能够提高吸附剂的胆红素吸附能力。实验表明,链长21个原子、偶联73 mol/mL正丁胺的吸附剂对胆红素的吸附能力最强,在30℃、300mg/L的白蛋白结合胆红素溶液中,吸附1h即达到平衡,胆红素吸附量达到3.01mg/mL(90.3mg/g干重);较高的温度有利于其对胆红素的吸附。50mL材料对500mL实际病人血浆动态吸附2.5h,总胆红素(277.4mg/L)去除率达到55.2%,同时对血浆蛋白的吸附较低。所有结果显示该吸附剂具有很强的实际应用的潜力。 相似文献
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The quartz crystal microbalance was employed to study the adsorption behavior of bilirubin on human-albumin layer, which was chemically bound to the self-assembled monolayer of 4-aminothiophenol on the surface of a gold electrode of the crystal via glutaraldehyde. A long-time adsorption process of bilirubin that took place on a human-albumin-modified surface was observed, and the adsorption kinetic parameters were estimated from the in situ frequency measurements. The amount of adsorbed bilirubin increased with increasing of both hydrogen ions and bilirubin concentration and was larger than that estimated based on the conclusion that there are two affinity sites for bilirubin per albumin molecule. With the present method, the displacement of bilirubin from an albumin layer caused by aspirin was also examined. QCM measurement provides a facile method for in situ monitoring of the adsorption/desorption of bilirubin on proteins layers. 相似文献
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Chao He Mingyuan Li Jue Zhang Bingqing Yan Weifeng Zhao Shudong Sun Changsheng Zhao 《Macromolecular bioscience》2020,20(8)
Excessive bilirubin in the body of patient with liver dysfunction or metabolic obstruction may cause jaundice with irreversible brain damage, and new type of adsorbent for bilirubin is under frequent investigation. Herein, graphene oxide based core @ polyethersulfone‐based shell beads are fabricated by phase inversion method, amides and heparin‐like polymer are introduced to functionalize the core‐shell beads. The beads are successfully prepared with obvious core‐shell structure, adequate thermostability and porous shell. Clotting times and protein adsorption are investigated to inspect the hemocompatibility property of the beads. The adsorption of bilirubin is systematically investigated by evaluating the effects of contacting time, initial concentration and temperature on the adsorption, which exhibits improved bilirubin adsorption amount for the beads with amides contained cores or/and shells. It is worth believing that the amides and heparin‐like polymer co‐functionalized core‐shell beads may be utilized in the field of hemoperfusion for bilirubin adsorption. 相似文献
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Bilirubin adsorption on self-assembled phospholipid bilayers was studied using quartz crystal microbalance, and factors influencing its adsorption such as pH, temperature, and solution ionic strength were discussed in detail. The results show the amount of adsorbed bilirubin on self-assembled phospholipid bilayers is small at higher temperature and large at higher pH and solution ionic strength, and the adsorption kinetic parameter estimated from the in situ frequency measurement is (1.8+/-0.27)x10(6) M(-1) (mean +/- S.D.). With the present method, the desorption of adsorbed bilirubin caused by human serum albumin and the photoinduced decomposition of adsorbed bilirubin under light illumination were also examined. QCM measurement provides a useful method for monitoring the adsorption/desorption process of bilirubin on self-assembled phospholipid bilayers. 相似文献