Hemoperfusion based on artificial cells for aluminium and iron removal, immunosorption, fulminant hepatic failure, uremia, poisoning and metabolic assists

Abstract

The author reviewed artificial cells and their applications in hemoperfusion for chronic renal failure, poisoning, fulminant hepatic failure, removal of aluminium and iron, and metabolic assists. Other areas reviewed included artificial cells containing enzymes, multienzymes, immunosorbents, cell cultures and other areas. Artificial cells can be formed as membrane coated adsorbent or microencapsulated adsorbent, enzymes and cells. The large surface to volume relationship and the ultrathin membrane of artificial cells allows the rapid equilibration of metabolites. Artificial cells containing enzymes, ion exchange resin and activated charcoal have been used for hemoperfusion. The microencapsulated or membrane coated absorbents, enzymes, cells, immunosorbents and other material are prevented from releasing unwanted material into the circulation and prevented from adverse effects on blood cells. Because of the problem of charcoal in releasing emboli and depleting platelets we first developed coated activated charcoal hemoperfusion for clinical application. This has been used extensively in clinical studies. The artificial cell approach has also been applied to a number of other hemoperfusion approaches. The lack of space only allows this paper to summarize some of the approaches originated from this research centre.