Nephrol Dial Transplant (2003) 18: 252-257
© 2003 European Renal Association-European Dialysis and Transplant Association
Editorial Comment
New insights in dialysis membrane biocompatibility: relevance of adsorption properties and heparin binding
Service de Néphrologie, Centre Hospitalier et Universitaire et CNRS FRE 2260, Reims, France
Keywords: biocompatibility; dialysis membranes; extracorporeal devices; haemodialysis
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Introduction
In the last 10 years, the concept of biocompatibility as applied to haemodialysis membranes has gained a general clinical acceptance in light of the knowledge that the clinical expression of ß2-microglobulin (ß2m) amyloidosis found in long-term haemodialyzed patients was governed by the characteristics of dialysis membranes. Highly permeable and biocompatible synthetic membranes interfere with the clinical expression of the disease and postpone occurrence of carpal tunnel syndrome and juxta-articular bone cysts [14]. Biocompatibility is a difficult concept to define in the absence of well-established clinical correlates. Besides anaphylactoid reactions' [5], which are related more frequently to contaminated dialysate or leachable chemicals than to the sustained activation of the contact phase of coagulation in patients treated with angiotensin converting enzyme inhibitors [6,7], the concept of biocompatibility refers to any harmful effects induced by the contact of blood with dialysis
Membrane components and effect of extracorporeal devices
Physicochemical mechanisms associated with membrane biocompatibility
Haemocompatibility of dialysis membranes
Dialysis membrane adsorption
Heparin coating of dialysis membrane
Membrane biocompatibility, nutrition and atherosclerosis
Conclusion: adsorption as a specific characteristic of biocompatible dialysis membranes
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