高等学校化学学报 ›› 2021, Vol. 42 ›› Issue (6): 1952.doi: 10.7503/cjcu20200879

• 高分子化学 • 上一篇    下一篇

新型蛋白结合类毒素血液灌流吸附剂的制备及吸附性能

刘云鸿, 彭新艳()   

  1. 泉州师范学院化工与材料学院, 泉州 362000
  • 收稿日期:2020-12-21 出版日期:2021-06-10 发布日期:2021-06-08
  • 通讯作者: 彭新艳 E-mail:pengxy1055@163.com
  • 基金资助:
    福建省自然科学基金(2020J05152);泉州市科技计划项目(2019C105);泉州师范学院博士科研启动基金资助

Preparation and Property of A Novel Hemoperfusion Adsorbent For Protein-bound Uremic Toxins

LIU Yunhong, PENG Xinyan()   

  1. School of Chemical Engineering and Materials Science,Quanzhou Normal University,Quanzhou 362000,China
  • Received:2020-12-21 Online:2021-06-10 Published:2021-06-08
  • Contact: PENG Xinyan E-mail:pengxy1055@163.com
  • Supported by:
    the Natural Science Foundation of Fujian Province, China(2020J05152);the Quanzhou Technology Plan Project, China(2019C105);the Ph.D. Research Start?up Fund of Quanzhou Normal University, China

摘要:

蛋白结合类毒素(PBUT)在尿毒症并发症的发生发展中起着重要作用, 现有血液净化模式对其清除效果较差, 开发用于高效清除尿毒症患者体内PBUT的血液灌流吸附材料已成为迫切的临床需求. 本文首先采用悬浮聚合法制备了咪唑基改性低交联聚苯乙烯微球P(St-DVB-VMZ); 然后通过小分子外交联剂的一步法傅克烷基化后交联反应, 制备出血液灌流用含咪唑基超高交联聚苯乙烯多孔树脂吸附剂HCP(St-DVB-VMZ). 利用傅里叶变换红外光谱(FTIR)、 X射线光电子能谱(XPS)、 扫描电子显微镜(SEM)及N2吸附-脱附分析等表征了吸附树脂的化学结构和微观孔结构. 结果表明, HCP(St-DVB-VMZ)具有丰富的孔结构, 比表面积达到709 m2/g. 尿毒症毒素吸附实验结果表明, HCP(St-DVB-VMZ)对蛋白结合类毒素[对硫酸吲哚酚(IS)、 对甲酚硫酸盐(PCS)和吲哚乙酸(IAA)]和中大分子毒素[甲状旁腺激素(PTH)、 β2-微球蛋白(β2M)及白细胞介素6(IL-6)]均具有优异的吸附性能并展示出较好的血液相容性, 有望实现全血灌流临床应用.

关键词: 蛋白结合类毒素, 血液灌流, 吸附树脂, 血液相容性, 咪唑基团

Abstract:

Protein-bound uremic toxins(PBUTs), as important risk factors for the progression of chronic kidney disease(CKD), can’t be cleared efficiently by traditional hemodialysis method until now. Therefore, it still remains a challenge for developing hemoperfusion adsorbents with enhanced PBUTs removal efficiency. In this work, a facile, one-step method was developed for the synthesis of imidazole-based hypercrosslinked polystyrene porous adsorbent, HCP(St-DVB-VMZ), using imidazole modified low crosslinked polystyrene microspheres, P(St-DVB-VMZ), as precursor, followed by Friedel crafts alkylation reaction with small-molecule external cross-linking agent. The chemical structure and micro-pore structure of the adsorbent were characte-rized by Fourier transform infrared spectroscopy(FTIR), X-ray photoelectron spectroscopy(XPS), scanning electron microscopy(SEM) and N2 adsorption-desorption analysis. The results demonstrated that HCP(St-DVB-VMZ) had abundant microporous structure, and the specific surface area was up to 709 m2/g. Adsorption experiments showed that the as-fabricated HCP(St-DVB-VMZ) exibited good removal capacity for both the PBUTs(IS, PCS and IAA) and the middle molecular toxins(PTH,β2M and IL-6). The hemocompatibility assays indicated that the HCP(St-DVB-VMZ) possessed good in vitro hemocompatibility,making it suitable for contacting with blood as a hemoperfusion absorbent for clinical application.

Key words: Protein-bound uremic toxin, Hemoperfusion, Adsorbent resin, Blood compatibility, Imidazole group

中图分类号: 

TrendMD: