Determination of endotoxin levels and their impact on interleukin-1 generation in continuous ambulatory peritoneal dialysis and hemodialysis.
Endotoxins represent a family of ubiquitous bacterial lipopolysaccharides found in water and raw materials. These substances have the ability to generate interleukin-1 (IL-1) and induce fever, as well as other acute phase phenomena. A study was undertaken to determine levels of background endotoxin in (1) continuous ambulatory peritoneal dialysis solution, (2) spent dialysate subsequent to overnight dwell, (3) hemodialysis solution, and (4) Limulus amebocyte lysate-reactive material (LAL-RM) in hemodialyzers and patient plasma. Levels of endotoxin in all of the above cases were less than thought to be required to induce biological activity, such as pyrogenicity, through IL-1 generation. Although nanogram amounts of LAL-RM are associated with some hollow-fiber membranes as well as the plasma of patients on those membranes, this material per se does not appear to produce IL-1 in vitro.
Pearson
F C
FC
Dialysis Technology, Travenol Laboratories, Round Lake, Ill.
Dubczak
J
J
Weary
M
M
Anderson
J
J
D004731:Endotoxins / Q000032:analysis*; D004866:Equipment Contamination; D006801:Humans; D007375:Interleukin-1 / Q000096:biosynthesis*; D008033:Limulus Test; D010531:Peritoneal Dialysis, Continuous Ambulatory; D011237:Predictive Value of Tests; D006435:Renal Dialysis
D004731:Endotoxins; D007375:Interleukin-1