PT  - JOURNAL ARTICLE
AU  - Rafiee-Tehrani, Morteza
AU  - Farrokhnia, Roya
AU  - Falkenhagen, D.
AU  - Weber, Christoph
TI  - Removal of Lipid A and Pseudomonas aeroginosa Endotoxin from Dialysis Fluids by High-Flux Polysulfone Ultrafilter (Dialyzer)
DP  - 1996 Sep 01
TA  - PDA Journal of Pharmaceutical Science and Technology
PG  - 306--310
VI  - 50
IP  - 5
4099  - http://journal.pda.org/content/50/5/306.short
4100  - http://journal.pda.org/content/50/5/306.full
SO  - PDA J Pharm Sci Technol1996 Sep 01; 50
AB  - Ultrafilters (dialysis membranes) are generally considered to be impermeable to bacterial endotoxins (lipopolysaccharides) contaminating dialysates used for hemodialysis therapy, due to the self-aggregating properties of its molecules in aqueous media. The aim of the present investigation was to monitor the efficiency of high-flux polysulfone ultrafilters in removing lipid A and lipopolysaccharide (LPS) from dialysis fluids. To evaluate the safety of high-flux polysulfone membranes, an in-vitro circulation system (measuring lipopolysaccharide and lipid A penetrate from the ultrafilter to the other side and vice-versa), was utilized. Peritoneal dialysis solution was spiked with various concentration of Pseudomonas aeruginosa lipopolysaccharide (LPS) as well as lipid A diphosphoryl (E. coli F-583). Endotoxin and lipid A concentrations were detected by a chromogenic limulus amoebocyte lysate (LAL) assay. This investigation indicates that polysulfone ultrafiltration represents an efficient system to obtain an endotoxin and lipid A free dialysate when contaminated peritoneal solution was circulated through the dialysis membrane.