title: [Study on preparation and property of a new adsorbent for endotoxin removal in blood purification].
abstract: In order to remove the endotoxin from the blood of endotoxemia patients, we prepared a new adsorbent with heparin space arm and polymyxin B (PMB) ligand. The carrier of chloromethyl polystyrene resin was activated and heparin space arm was grafted, and then PMB ligand was immobilized onto adsorbent with glutaraldehyde. We employed in vitro FITC-lipopolysaccharide (FITC-LPS) static adsorption to characterize the adsorption properties on the adsorbent, and conducted in vitro lipopolysaccharide (LPS) static adsorption to measure quantitavely the adsorption capacity and rate, and then evaluated the blood compatibility. The in vitro static adsorption indicated that the adsorbent had the removal rate of LPS above 70% with the adsorption equilibrium time for 2 hours. Blood compatibility experiment showed that the adsorbent had little negative effects on blood cells and plasma protein, and their adsorption rates were less than 10% for hemocytes and 20% for plasma protein respectively. This adsorbent exhibited high selectivity, high adsorption capacity and good biocompatibility, and presented a promising clinical application in the treatment of endotoxemia.
authors.affiliation: Key Laboratory of Biorheological Science and Technology, Ministry of Education, Bioengineering College, Chongqing University, Chongqing 400044, China.
authors.forename: Feifei
authors.initials: F
authors.lastname: Wang
authors.forename: Xiang
authors.initials: X
authors.lastname: Wang
authors.forename: Yanlian
authors.initials: Y
authors.lastname: Xiong
authors.forename: Pei
authors.initials: P
authors.lastname: Xu
authors.forename: Xinxin
authors.initials: X
authors.lastname: Jin
authors.forename: Jinlong
authors.initials: J
authors.lastname: Tang
authors.forename: Jinchun
authors.initials: J
authors.lastname: Mao
mesh_terms: D000327:Adsorption; D019446:Endotoxemia / Q000628:therapy; D004731:Endotoxins / Q000302:isolation & purification*; D006440:Hemofiltration / Q000295:instrumentation* / Q000379:methods; D006493:Heparin / Q000737:chemistry; D006801:Humans; D007475:Ion Exchange Resins / Q000737:chemistry; D008024:Ligands; D011112:Polymyxin B / Q000737:chemistry; D016060:Sorption Detoxification / Q000379:methods*
chemical_list: D004731:Endotoxins; D007475:Ion Exchange Resins; D008024:Ligands; D006493:Heparin; D011112:Polymyxin B