An Adsorbent for Extracorporeal Elimination of Pathogenic Autoantibodies

Jun Ren, Zhiqian Pi, Xue Lin, Li Xu, Jian Xie, Lingyun Jia, Yue Ma, Yumei Wang
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Abstract

This work investigated the potential use of benzoic acid (BA)-based immunoadsorbent, a hydrophobic adsorbent, for autoantibodies selective adsorption therapy. The adsorbent was assessed through chromatographer and batch system assays in terms of adsorption capacity, selectivity for both polycloneantibodies in normal human plasma and pathogenic antibodies in patients' sera. For human immunoglobulin G (IgG), capacities of >30 mg/mL at 10% breakthrough (pH 7.4, linear flow rate of 212 cm/hr) were regularly achieved without adding salt. Removal percentage of immunoglobulins (Igs) in plasma samples was 34.2±±4.0%, while that of albumin was less than 3% at the ratio of 5 sample volumes per adsorbent volume. Rheumatoid factors in serum samples from 8 rheumatoid arthritis (RA) patients were eliminated at different degrees after treatment by the adsorbent. The results indicated that BA-based agrose was effective in selectively adsorbing human antibodies from plasma, could thus have a potential ability to eliminate pathogenic autoantibodies in apheresis.
一种体外消除致病性自身抗体的吸附剂
本研究探讨了苯甲酸(BA)免疫吸附剂(一种疏水性吸附剂)在自身抗体选择性吸附治疗中的潜在应用。通过色谱仪和批量系统分析,评估了吸附剂对正常人血浆中多克隆抗体和患者血清中致病抗体的吸附能力和选择性。对于人免疫球蛋白G (IgG),在不添加盐的情况下,在10%的突破(pH 7.4,线性流速为212 cm/hr)下,通常可以获得>30 mg/mL的容量。免疫球蛋白(Igs)的去除率为34.2±±4.0%,而白蛋白的去除率在5个样品体积/吸附剂体积的条件下低于3%。8例类风湿关节炎(RA)患者血清样品经吸附剂处理后,类风湿因子均有不同程度消除。结果表明,ba基琼脂糖能有效地选择性吸附血浆中的人抗体,因此可能具有消除血液分离中致病性自身抗体的潜在能力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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