Abstract
Human blood monocytes were incubated in vitro in the presence of various concentrations of sodium acetate or sodium chloride or with medium alone. Intracellular and extracellular levels of interleukin-1 (IL-1) were measured. The production of intracellular IL-1 and the release of extracellular IL-1 were higher in the presence of acetate than in the presence of chloride or in medium alone. The concentrations of acetate used were comparable to those encountered by blood monocytes on the surface of haemodialysis membranes. Since complications of peritoneal dialysis, such as loss of ultrafiltration and progressive fibrosis of the peritoneum, have been associated with the use of sodium acetate as the exchange-fluid buffer, these results suggest that the widespread use of sodium acetate as a buffer during haemodialysis may be contraindicated.
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