Chem. J. Chinese Universities ›› 2021, Vol. 42 ›› Issue (6): 1952.doi: 10.7503/cjcu20200879

• Polymer Chemistry • Previous Articles     Next Articles

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

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

CLC Number: 

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