Hemocompatibility and anaphylatoxin formation of protein-immobilizing polyacrylonitrile hemodialysis membrane.
Plasma proteins were covalently immobilized onto polyacrylonitrile (PAN) membrane to evaluate the hemocompatibility and anaphylatoxin formation. This is used as a model to study the effect of protein-adsorption on the blood-contacting response of hemodializing membranes. The proteins used were either platelet-adhesion-promoting collagen (COL) or platelet-adhesion-inhibiting human serum albumin (HSA). The microstructure and characterization of the protein-immobilizing PAN membranes were evaluated by Coomassie dye assay, atomic force microscopy, X-ray photoelectron spectroscopy and water contact angle measurement. PAN-HSA membrane improved not only hemocompatibility including less platelet adhesion, longer blood coagulation times, and higher thrombin inactivity level, but also induced lower complement activation. On the other hand, PAN-COL membrane exhibited blood incompatibility, although induced less increase of C3, C4 antigens of serum. Overall results of this study demonstrated that the immobilization of HSA onto the surface of PAN membrane would be beneficial to improve the hemocompatibility and to reduce the anaphylatoxin formation during hemodialysis.
Department of Materials Sciences and Engineering, National Chiao Tung University, Hsinchu, Taiwan 300, Taiwan, ROC.
Ting-Yu
TY
Liu
Wen-Ching
WC
Lin
Li-Ying
LY
Huang
San-Yuan
SY
Chen
Ming-Chien
MC
Yang
D000180:Acrylic Resins / Q000737:chemistry*; D000327:Adsorption; D000706:Anaphylatoxins / Q000096:biosynthesis; D001777:Blood Coagulation / Q000187:drug effects; D002478:Cells, Cultured; D020099:Coated Materials, Biocompatible / Q000737:chemistry / Q000494:pharmacology; D003094:Collagen / Q000737:chemistry / Q000494:pharmacology*; D003167:Complement Activation / Q000187:drug effects; D006493:Heparin / Q000737:chemistry / Q000494:pharmacology*; D006801:Humans; D008422:Materials Testing; D008567:Membranes, Artificial; D010973:Platelet Adhesiveness / Q000187:drug effects*; D011485:Protein Binding; D006435:Renal Dialysis / Q000295:instrumentation* / Q000379:methods; D012709:Serum Albumin / Q000737:chemistry / Q000494:pharmacology*; D014462:Ultrafiltration / Q000295:instrumentation* / Q000379:methods
D000180:Acrylic Resins; D000706:Anaphylatoxins; D020099:Coated Materials, Biocompatible; D008567:Membranes, Artificial; D012709:Serum Albumin; C010504:polyacrylonitrile; D006493:Heparin; D003094:Collagen